CN102591126A - Projector and stereoscopic image system - Google Patents

Projector and stereoscopic image system Download PDF

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Publication number
CN102591126A
CN102591126A CN201110070876XA CN201110070876A CN102591126A CN 102591126 A CN102591126 A CN 102591126A CN 201110070876X A CN201110070876X A CN 201110070876XA CN 201110070876 A CN201110070876 A CN 201110070876A CN 102591126 A CN102591126 A CN 102591126A
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CN
China
Prior art keywords
image signal
signal light
polarization image
polarization
conductive layer
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Granted
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CN201110070876XA
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Chinese (zh)
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CN102591126B (en
Inventor
刘美鸿
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Shenzhen Liuming Technology Co., Ltd
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Shenzhen Estar Displaytech Co
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Priority to CN201110070876XA priority Critical patent/CN102591126B/en
Priority to PCT/CN2011/084855 priority patent/WO2012126267A1/en
Publication of CN102591126A publication Critical patent/CN102591126A/en
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Publication of CN102591126B publication Critical patent/CN102591126B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/363—Image reproducers using image projection screens
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography
    • G03B35/16—Stereoscopic photography by sequential viewing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/24—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type involving temporal multiplexing, e.g. using sequentially activated left and right shutters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/337—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using polarisation multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/341—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Liquid Crystal (AREA)

Abstract

The invention discloses a projector and a stereoscopic image system which are applied to the technical field of projection. According to the projector, a polarizing filter is applied to generate polarization image signal light alternated according to a preset time frequency such as 120 frames per second; image frames are alternated according to a sequence; then the polarization image signal light is converted into novel polarization image signal light of which the vibration directions are parallel and the polarization frequency is unchanged by a projection lens; and when the novel polarization image signal light is reflected to polarization glasses by a projection screen, the vibration directions of the light cannot be changed and a viewer can only see corresponding images by left and right lens of the polarization glasses, i.e. the viewer sequentially receives a left eye frame, a right eye frame, a left eye frame and a right eye frame by the polarization glasses, so that the stereoscopic perception is generated in a visual nervous system and the aim of viewing a stereoscopic image is fulfilled, and thus, the aim of viewing the stereoscopic image by one projector is fulfilled.

Description

Projector, stereo image system
Technical field
The present invention relates to the shadow casting technique field, relate in particular to a kind of projector, stereo image system.
Background technology
Projector is a kind of equipment of forming images on projects images signal light to the projection screen of being used for, and existing projector comprises digital light processing type (DLP) projector, liquid crystal on silicon type (LCOS) projector, liquid crystal type (LCD) projector.
See also Fig. 1, be the synoptic diagram of existing projector, this projector 100 comprises:
Image signal processing equipment 101 is used to generate picture signal light;
Projection lens 102 is arranged on the bang path of the picture signal light that image signal processing equipment 101 generated, and is used to throw on picture signal light to the projection screen of this generation form images.
See also Fig. 2, be the synoptic diagram of the embodiment of existing digital light processing type projector, this digital light processing type projector 200 comprises: digital light is handled type image signal treatment facility 201, projection lens 202;
Digital light is handled type image signal treatment facility 201, is used to generate picture signal light, comprising:
Light source 2011 is used to provide light;
Relay lens 2012 is arranged on the bang path of the light that light source 2011 provided, and is used for ray cast to the digital micro-mirror device (DMD) 2013 that light source 2011 is provided;
Digital micro-mirror device 2013 is arranged on the bang path of the light that light source 2011 provided, and comprises a plurality of micro mirror (not shown)s; The state that each micro mirror can appear comprises ON state, OFF state; The micro mirror that presents the OFF state is used to reflect the light that relay lens 2012 is projected, and makes this light that reflects depart from projection lens 202; The micro mirror that presents the ON state; Be used to reflect light to the projection lens 202 that relay lens 2012 is projected, this light that reflexes to projection lens 202 promptly becomes image, has promptly generated picture signal light;
Projection lens 202 is arranged on the bang path of the light that light source 2011 provided, and is used to throw on picture signal light to the projection screen of this generation form images.
See also Fig. 3, be the synoptic diagram of the embodiment of existing liquid crystal on silicon type projector, this liquid crystal on silicon type projector 300 comprises: liquid crystal on silicon type image signal treatment facility 301, projection lens 302;
Liquid crystal on silicon type image signal treatment facility 301 is used to generate picture signal light, comprising:
Light source 3011 is used to provide light;
Beam splitting system 3012; Be arranged on the bang path of the light that light source 3011 provided; Be used for the light that light source 3011 is provided is divided into ruddiness, green glow, blue light three coloured light; Ruddiness is projected to refracting telescope 1, green glow is projected to liquid crystal on silicon imaging system 3015, blue light is projected to refracting telescope 2 3014;
Refracting telescope 1 is arranged on the bang path of this ruddiness, is used for this ruddiness is refracted to liquid crystal on silicon imaging system 3015;
Refracting telescope 2 3014 is arranged on the bang path of this blue light, is used for this blue light is refracted to liquid crystal on silicon imaging system 3015;
Liquid crystal on silicon imaging system 3015 is arranged on the bang path of this ruddiness, green glow, blue light three coloured light, is used for this ruddiness, green glow, blue light three coloured light are closed look, carries out image modulation and forms image, generates picture signal light;
Projection lens 302 is arranged on the bang path of the picture signal light that liquid crystal on silicon type image signal treatment facility 301 generated, and is used to throw on picture signal light to the projection screen of this generation form images.
See also Fig. 4, be the synoptic diagram of the embodiment of existing liquid crystal type projector, this liquid crystal type projector 400 comprises: liquid crystal type image signal processing equipment 401, projection lens 402;
Liquid crystal type image signal processing equipment 401 is used to generate picture signal light;
Projection lens 402 is arranged on the bang path of the picture signal light that liquid crystal type image signal processing equipment 401 generated, and is used to throw on picture signal light to the projection screen of this generation form images.
The design of Fig. 2 representative is not the only possibility method that constitutes digital light processing type projector; The design of Fig. 3 representative is not the only possibility method that constitutes liquid crystal on silicon type projector yet; The design of Fig. 4 representative is not the only possibility method that constitutes liquid crystal type projector yet, and these figures that draw only are the purposes for example.
Stereoprojection realizes through the polarisation of light principle; The scheme of existing realization stereoprojection is to adopt two synchronous projects images of projector; The polarization direction of the polarizer before two projectors is orthogonal; Make the polarization direction of the two bundle polarized lights that produce also orthogonal; And polarized light be projected to special-purpose projection screen when reflexing to the beholder position again direction of polarized light can not change, the beholder can only see corresponding polarized light image through the polaroid glasses images of left and right eyes, thereby in visual system, produces stereo perception; Reach the purpose of viewing and admiring stereopsis, prior art also can't realize reaching the purpose of viewing and admiring stereopsis through a projector.
Summary of the invention
The technical matters that the present invention will solve provides a kind of projector, stereo image system.
The object of the present invention is to provide a kind of projector, comprising: image signal processing equipment, polagizing filter, projection lens;
Said image signal processing equipment is used to generate picture signal light;
Said polagizing filter is arranged on the bang path of the picture signal light that said image signal processing equipment generates, and comprising: electric field selector switch, electric field provide device, the polarizer;
Said electric field selector switch is used to select the schedule time, to the said polarizer electric field is provided;
Said electric field provides device, and being used for provides electric field to the said polarizer when said electric field selector switch selection provides electric field to the said polarizer;
The said polarizer comprises: Polarizer, first conductive layer, said liquid crystal layer, second conductive layer, quarter-wave plate;
Said Polarizer is used for seeing through the light that parallels direction with polar orientation, sees through the picture signal light that said image signal processing equipment generated, and obtains polarization image signal light one;
Said first conductive layer, bonding with said Polarizer, be used for seeing through said polarization image signal light one;
Said liquid crystal layer; Bonding with said first conductive layer, be used for rotating the light predetermined angular that said first conductive layer is seen through at said first conductive layer, when said second conductive layer does not add electric field; Obtain polarization image signal light two, and see through said polarization image signal light two; When said electric field provides device that electric field is provided to said first conductive layer, said second conductive layer, see through said polarization image signal light one;
Said second conductive layer, bonding with said liquid crystal layer, be used for seeing through polarization image signal light one, the polarization image signal light two that said liquid crystal layer saw through;
Said quarter-wave plate, bonding with said second conductive layer, be used for seeing through the polarization image signal light one that said second conductive layer is seen through, the polarization image signal light one that will see through changes polarization image signal light three into; See through the polarization image signal light two that said second conductive layer is seen through, the polarization image signal light two that will see through changes polarization image signal light four into;
Said projection lens is arranged on the bang path of said polarization image signal light three, polarization image signal light four, is used to throw said polarization image signal light three, polarization image signal light four forms images to projection screen.
The objective of the invention is to also provides a kind of stereo image system, comprising: projector, projection screen, polaroid glasses;
Said projector comprises: image signal processing equipment, polagizing filter, projection lens;
Said image signal processing equipment is used to generate picture signal light;
Said polagizing filter is arranged on the bang path of the picture signal light that said image signal processing equipment generates, and comprising: electric field selector switch, electric field provide device, the polarizer;
Said electric field selector switch is used to select the schedule time, to the said polarizer electric field is provided;
Said electric field provides device, and being used for provides electric field to the said polarizer when said electric field selector switch selection provides electric field to the said polarizer;
The said polarizer comprises: Polarizer, first conductive layer, liquid crystal layer, second conductive layer, quarter-wave plate;
Said Polarizer is used for seeing through the light that parallels direction with polar orientation, sees through the picture signal light that said image signal processing equipment generated, and obtains polarization image signal light one;
Said first conductive layer, bonding with said Polarizer, be used for seeing through said polarization image signal light one;
Said liquid crystal layer; Bonding with said first conductive layer, be used for rotating the light predetermined angular that said first conductive layer is seen through at said first conductive layer, when said second conductive layer does not add electric field; Obtain polarization image signal light two, and see through said polarization image signal light two; When said electric field provides device that electric field is provided to said first conductive layer, said second conductive layer, see through said polarization image signal light one;
Said second conductive layer, bonding with said liquid crystal layer, be used for seeing through polarization image signal light one, the polarization image signal light two that said liquid crystal layer saw through;
Said quarter-wave plate, bonding with said second conductive layer, be used for seeing through the polarization image signal light one that said second conductive layer is seen through, the polarization image signal light one that will see through changes polarization image signal light three into; See through the polarization image signal light two that said second conductive layer is seen through, the polarization image signal light two that will see through changes polarization image signal light four into;
Said projection lens; Be arranged on the bang path of said polarization image signal light three, polarization image signal light four; Be used for seeing through said polarization image signal light three; Change the said polarization image signal light three that sees through into polarization image signal light five, and throw said polarization image signal light five and to said projection screen, form images; See through said polarization image signal light four, change the said polarization image signal light four that sees through into polarization image signal light six, and throw said polarization image signal light six and to said projection screen, form images; The direction of vibration of the direction of vibration of said polarization image signal light five and polarization image signal light three parallels, and the direction of vibration of the direction of vibration of said polarization image signal light six and polarization image signal light four parallels;
Said projection screen is arranged on the bang path of projection lens projected described in the said projector polarization image signal light five, polarization image signal light six, is used to reflect said polarization image signal light five, obtains polarization image signal light seven; Be used to reflect said polarization image signal light six, obtain polarization image signal light eight; The direction of vibration of the said polarization image signal light seven that obtains and the direction of vibration of polarization image signal light five parallel, and the direction of vibration of the said polarization image signal light eight that obtains and the direction of vibration of polarization image signal light six parallel;
Said polaroid glasses are arranged on the bang path of the polarization image signal light seven that obtains after the reflection of said projection screen, polarization image signal light eight, comprising: left eyeglass, right eyeglass, frame;
Said left eyeglass is arranged on the said frame, comprising: left eyeglass quarter-wave plate, left eyeglass Polarizer;
Said left eyeglass quarter-wave plate is used for seeing through the polarization image signal light seven that after said projection screen reflection, obtains, and the polarization image signal light seven that will see through changes polarization image signal light nine into;
Said left eyeglass Polarizer is used for seeing through said polarization image signal light nine;
Said right eyeglass is arranged on the said frame, comprising: right eyeglass quarter-wave plate, right eyeglass Polarizer;
Said right eyeglass quarter-wave plate is used for seeing through the polarization image signal light eight that after said projection screen reflection, obtains, and the polarization image signal light eight that will see through changes polarization image signal light ten into;
Said right eyeglass Polarizer is used for seeing through said polarization image signal light ten;
The polar orientation irrelevancy of the polar orientation of said left eyeglass Polarizer and right eyeglass Polarizer is capable.
Projector applications polagizing filter of the present invention produces on schedule the polarization image signal light that the frequency like per second 120 frames replaces; Each picture frame replaces in order; Then projection lens converts this polarization image signal light to direction of vibration parallels and the polarization frequency is constant new polarization image signal light; And the direction of vibration of this new polarization image signal light light when projection screen reflexes to polaroid glasses can not change, and the beholder can only see corresponding image through polaroid glasses left side eyeglass, right eyeglass, and promptly the beholder receives a left-eye frame through polaroid glasses; Next right eye frame; Another left-eye frame then, another right eye frame next, thus in visual system, produce stereo perception; Reach the purpose of viewing and admiring stereopsis, reach the purpose of viewing and admiring stereopsis through a projector thereby reach realization.
Stereo image system of the present invention is used projector and is produced polarization image signal light alternately like the frequency of per second 120 frames on schedule; Each picture frame replaces in order; And the direction of vibration of the polarization image signal light light when projection screen reflexes to polaroid glasses that replaces of this generation can not change, and the beholder can only see corresponding image through polaroid glasses left side eyeglass, right eyeglass, and promptly the beholder receives a left-eye frame through polaroid glasses; Next right eye frame; Another left-eye frame then, another right eye frame next, thus in visual system, produce stereo perception; Reach the purpose of viewing and admiring stereopsis, reach the purpose of viewing and admiring stereopsis through a projector thereby reach realization.
Description of drawings
Fig. 1 is the synoptic diagram of existing projector;
Fig. 2 is the synoptic diagram of the embodiment of existing digital light processing type projector;
Fig. 3 is the synoptic diagram of the embodiment of existing liquid crystal on silicon type projector;
Fig. 4 is the synoptic diagram of the embodiment of existing liquid crystal type projector;
Fig. 5 is the synoptic diagram of projector of the present invention;
Fig. 6 is the synoptic diagram of stereo image system of the present invention.
Embodiment
The present invention provides a kind of projector, stereo image system; Be applied to the shadow casting technique field, projector applications polagizing filter of the present invention produces on schedule the polarization image signal light that the frequency like per second 120 frames replaces, and each picture frame replaces in order; Then projection lens converts this polarization image signal light to direction of vibration parallels and the polarization frequency is constant new polarization image signal light; And the direction of vibration of this new polarization image signal light light when projection screen reflexes to polaroid glasses can not change, and the beholder can only see corresponding image through polaroid glasses left side eyeglass, right eyeglass, and promptly the beholder receives a left-eye frame through polaroid glasses; Next right eye frame; Another left-eye frame then, another right eye frame next, thus in visual system, produce stereo perception; Reach the purpose of viewing and admiring stereopsis, reach the purpose of viewing and admiring stereopsis through a projector thereby reach realization.
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present invention provides a kind of projector.
See also Fig. 5, be the synoptic diagram of projector of the present invention, this projector 500 comprises: image signal processing equipment 501, polagizing filter 502, projection lens 503;
Image signal processing equipment 501 is used to generate picture signal light;
Polagizing filter 502 is arranged on the bang path of the picture signal light that image signal processing equipment 501 generated, and comprising: electric field selector switch 5021, electric field provide device 5022, the polarizer 5023;
Electric field selector switch 5021 is used to select the schedule time, to the polarizer 5023 electric field is provided;
Electric field provides device 5022, and being used for provides electric field to the polarizer 5023 when 5021 selections of electric field selector switch provide electric field to the polarizer 5023;
The polarizer 5023 comprises: Polarizer 50231, first conductive layer 50232, liquid crystal layer 50233, second conductive layer 50234, quarter-wave plate 50235;
Polarizer 50231 is used for seeing through the light that parallels direction with polar orientation, sees through the picture signal light that image signal processing equipment 501 is generated, and obtains linearly polarized light one, promptly obtains polarization image signal light one;
First conductive layer 50232, bonding with Polarizer 50231, be used for seeing through this polarization image signal light one;
Liquid crystal layer 50233; Bonding with first conductive layer 50232; Be used at first conductive layer 50232, when second conductive layer 50234 does not add electric field, rotate the light predetermined angular that first conductive layer 50232 is seen through, obtain linearly polarized light two; Promptly obtain polarization image signal light two, and see through the polarization image signal light two that this obtains after rotation; When electric field provides device 5022 that electric field is provided to first conductive layer 50232, second conductive layer 50234, see through this polarization image signal light one;
Second conductive layer 50234, bonding with liquid crystal layer 50233, be used for seeing through polarization image signal light one, the polarization image signal light two that liquid crystal layer 50233 is seen through;
Quarter-wave plate 50235; Bonding with second conductive layer 50234; Be used for seeing through the polarization image signal light one that second conductive layer 50234 is seen through, the polarization image signal light one that will see through changes elliptically polarized light one into, promptly changes polarization image signal light three into; See through the polarization image signal light two that second conductive layer 50234 is seen through, the polarization image signal light two that will see through changes elliptically polarized light two into, promptly changes polarization image signal light four into;
Projection lens 503; Be arranged on the bang path of this polarization image signal light three, polarization image signal light four; Be used to throw this polarization image signal light three, polarization image signal light four forms images to projection screen, comprising: see through this polarization image signal light three, change this polarization image signal light three that sees through into elliptically polarized light three; Promptly change polarization image signal light five into, and throw this polarization image signal light five and to projection screen, form images; Change this polarization image signal light four that sees through into elliptically polarized light four, promptly change polarization image signal light six into, and throw this polarization image signal light six and to projection screen, form images; The direction of vibration of the direction of vibration of this polarization image signal light five and polarization image signal light three parallels, and the direction of vibration of the direction of vibration of this polarization image signal light six and polarization image signal light four parallels.
Wherein, electric field selector switch 5021 is selected the schedule time, provides the process of electric field to comprise to the polarizer 5023:
Electric field selector switch 5021 is chosen in N/120 during second, to the polarizer 5023 electric field is provided, and N wherein comprises odd number, even number.
Wherein, first conductive layer 50232 comprises tin indium oxide (ITO) electro-conductive glass, and is bonding with Polarizer 50231, is used for seeing through this polarization image signal light one.
Wherein, second conductive layer 50234 comprises tin indium oxide ITO electro-conductive glass, and is bonding with liquid crystal layer 50233, is used for seeing through polarization image signal light one, the polarization image signal light two that liquid crystal layer 50233 is seen through.
Wherein, Liquid crystal layer 50233 comprises twisted-nematic (TN) type liquid crystal layer; Bonding with first conductive layer 50232, be used at first conductive layer 50232, when second conductive layer 50234 does not add electric field, rotate light 90 degree that first conductive layer 50232 is seen through; Obtain polarization image signal light two, and see through the polarization image signal light two that this obtains after rotation; When electric field provides device 5022 that electric field is provided to first conductive layer 50232, second conductive layer 50234, see through this polarization image signal light one.
Wherein, Liquid crystal layer 50233 comprises super twisted nematic (STN) type liquid crystal layer; Bonding with first conductive layer 50232, be used at first conductive layer 50232, when second conductive layer 50234 does not add electric field, rotate light 270 degree that first conductive layer 50232 is seen through; Obtain polarization image signal light two, and see through the polarization image signal light two that this obtains after rotation; When electric field provides device 5022 that electric field is provided to first conductive layer 50232, second conductive layer 50234, see through this polarization image signal light one.
Wherein, electric field selector switch 5021 comprises the power supply gate, is used to select the schedule time, to the polarizer 5023 electric field is provided.
Wherein, electric field provides device 5022 to comprise power supply, and being used for provides electric field to the polarizer 5023 when 5021 selections of electric field selector switch provide electric field to the polarizer 5023.
Wherein, quarter-wave plate 50235 sees through the polarization image signal light one that second conductive layer 50234 is seen through, and the process that the polarization image signal light one that will see through changes polarization image signal light three into comprises:
Quarter-wave plate 50235 sees through direction of vibration becomes predetermined angular one with its fast axle polarization image signal light one, and the polarization image signal light one that will see through changes polarization image signal light three into.
Wherein, quarter-wave plate 50235 sees through the polarization image signal light two that second conductive layer 50234 is seen through, and the process that the polarization image signal light two that will see through changes polarization image signal light four into comprises:
Quarter-wave plate 50235 sees through direction of vibration becomes predetermined angular two with its fast axle polarization image signal light two, and the polarization image signal light two that will see through changes polarization image signal light four into.
Wherein, quarter-wave plate 50235 sees through direction of vibration becomes miter angle with its fast axle polarization image signal light one, and the polarization image signal light one that will see through changes circularly polarized light one into, promptly changes polarization image signal light three into.
Wherein, quarter-wave plate 50235 sees through direction of vibration becomes miter angle with its fast axle polarization image signal light two, and the polarization image signal light two that will see through changes circularly polarized light two into, promptly changes polarization image signal light four into.
Wherein, image signal processing equipment 501 comprises: digital light is handled the type image signal treatment facility, is used to generate picture signal light; Or liquid crystal on silicon type image signal treatment facility, be used to generate picture signal light; Or the liquid crystal type image signal processing equipment, be used to generate picture signal light; Or display device, being used to generate picture signal light, this display device comprises TV, computer, projector, navigating instrument, mobile phone, camera.
Wherein, the polarization frequency of polagizing filter 502 can be identical with the broadcast frequency of program source.
Wherein, Polagizing filter 502 on schedule can be synchronous with the picture signal light that image signal processing equipment 501 is generated like the polarization image signal light that replaces that frequency produced of per second 120 frames, and pairing each picture frame of this polarization image signal light replaces in order.
Projector of the present invention 500 uses polagizing filters 502 and produces on schedule the polarization image signal light that the frequency like per second 120 frames replaces; Each picture frame replaces in order; Then projection lens 503 converts this polarization image signal light to direction of vibration parallels and the polarization frequency is constant new polarization image signal light; And the direction of vibration of this new polarization image signal light light when projection screen reflexes to polaroid glasses can not change, and the beholder can only see corresponding image through polaroid glasses left side eyeglass, right eyeglass, and promptly the beholder receives a left-eye frame through polaroid glasses; Next right eye frame; Another left-eye frame then, another right eye frame next, thus in visual system, produce stereo perception; Reach the purpose of viewing and admiring stereopsis, reach the purpose of viewing and admiring stereopsis through a projector thereby reach realization.
The present invention also provides a kind of stereo image system.
See also Fig. 6, be the synoptic diagram of stereo image system of the present invention, this stereo image system 600 comprises: projector 601, projection screen 602, polaroid glasses 603;
Projector 601 comprises: image signal processing equipment 6011, polagizing filter 6012, projection lens 6013;
Image signal processing equipment 6011 is used to generate picture signal light;
Polagizing filter 6012 is arranged on the bang path of the picture signal light that image signal processing equipment 6011 generated, and comprising: electric field selector switch 60121, electric field provide device 60122, the polarizer 60123;
Electric field selector switch 60121 is used to select the schedule time, to the polarizer 60123 electric field is provided;
Electric field provides device 60122, and being used for provides electric field to the polarizer 60123 when 60121 selections of electric field selector switch provide electric field to the polarizer 60123;
The polarizer 60123 comprises: Polarizer 601231, first conductive layer 601232, liquid crystal layer 601233, second conductive layer 601234, quarter-wave plate 601235;
Polarizer 601231 is used for seeing through the light that parallels direction with polar orientation, sees through the picture signal light that image signal processing equipment 6011 is generated, and obtains linearly polarized light one, promptly obtains polarization image signal light one;
First conductive layer 601232, bonding with Polarizer 601231, be used for seeing through this polarization image signal light one;
Liquid crystal layer 601233; Bonding with first conductive layer 601232; Be used at first conductive layer 601232, when second conductive layer 601234 does not add electric field, rotate the light predetermined angular that first conductive layer 601232 is seen through, obtain linearly polarized light two; Promptly obtain polarization image signal light two, and see through the polarization image signal light two that this obtains after rotation; When electric field provides device 60122 that electric field is provided to first conductive layer 601232, second conductive layer 601234, see through this polarization image signal light one;
Second conductive layer 601234, bonding with liquid crystal layer 601233, be used for seeing through polarization image signal light one, the polarization image signal light two that liquid crystal layer 601233 is seen through;
Quarter-wave plate 601235; Bonding with second conductive layer 601234; Be used for seeing through the polarization image signal light one that second conductive layer 601234 is seen through, the polarization image signal light one that will see through changes elliptically polarized light one into, promptly changes polarization image signal light three into; See through the polarization image signal light two that second conductive layer 601234 is seen through, the polarization image signal light two that will see through changes elliptically polarized light two into, promptly changes polarization image signal light four into;
Projection lens 6013; Be arranged on the bang path of this polarization image signal light three, polarization image signal light four; Be used to throw imaging on this polarization image signal light three, polarization image signal light four to the projection screen 602, comprise: see through this polarization image signal light three, change this polarization image signal light three that sees through into elliptically polarized light three; Promptly change polarization image signal light five into, and throw imaging on this polarization image signal light five to projection screen 602; See through this polarization image signal light four, change this polarization image signal light four that sees through into elliptically polarized light four, promptly change polarization image signal light six into, and throw imaging on this polarization image signal light six to projection screen 602; The direction of vibration of the direction of vibration of this polarization image signal light five and polarization image signal light three parallels, and the direction of vibration of the direction of vibration of this polarization image signal light six and polarization image signal light four parallels;
Projection screen 602; Be arranged on the bang path of projection lens 6013 is projected in the projector 601 polarization image signal light five, polarization image signal light six; Be used to reflect this polarization image signal light five, obtain elliptically polarized light five, promptly obtain polarization image signal light seven; Be used to reflect this polarization image signal light six, obtain elliptically polarized light six, promptly obtain polarization image signal light eight; The direction of vibration of the polarization image signal light seven that this obtains and the direction of vibration of polarization image signal light five parallel, and the direction of vibration of the polarization image signal light eight that this obtains and the direction of vibration of polarization image signal light six parallel;
Polaroid glasses 603 are arranged on the bang path of the polarization image signal light seven that obtains after projection screen 602 reflection, polarization image signal light eight, comprising: left eyeglass 6031, right eyeglass 6032, frame 6033;
Left side eyeglass 6031 is arranged on the frame 6033, comprising: left eyeglass quarter-wave plate 60311, left eyeglass Polarizer 60312;
Left side eyeglass quarter-wave plate 60311 is used for seeing through the polarization image signal light seven that after projection screen 602 reflections, obtains, and the polarization image signal light seven that will see through changes linearly polarized light three into, promptly changes polarization image signal light nine into;
Left side eyeglass Polarizer 60312 is used for seeing through this polarization image signal light nine;
Right eyeglass 6032 is arranged on the frame 6033, comprising: right eyeglass quarter-wave plate 60321, right eyeglass Polarizer 60322;
Right eyeglass quarter-wave plate 60321 is used for seeing through the polarization image signal light eight that after projection screen 602 reflections, obtains, and the polarization image signal light eight that will see through changes linearly polarized light four into, promptly changes polarization image signal light ten into;
Right eyeglass Polarizer 60322 is used for seeing through this polarization image signal light ten;
The polar orientation of left side eyeglass Polarizer 60312 and the polar orientation irrelevancy of right eyeglass Polarizer 60322 are capable.
Wherein, electric field selector switch 60121 is selected the schedule time, provides the process of electric field to comprise to the polarizer 60123:
Electric field selector switch 60121 is chosen in N/120 during second, to the polarizer 60123 electric field is provided, and N wherein comprises odd number, even number.
Wherein, first conductive layer 601232 comprises tin indium oxide ITO electro-conductive glass, and is bonding with Polarizer 601231, is used for seeing through this polarization image signal light one.
Wherein, second conductive layer 601234 comprises tin indium oxide ITO electro-conductive glass, and is bonding with liquid crystal layer 601233, is used for seeing through polarization image signal light one, the polarization image signal light two that liquid crystal layer 601233 is seen through.
Wherein, Liquid crystal layer 601233 comprises twisted-nematic TN type liquid crystal layer, and is bonding with first conductive layer 601232, is used at first conductive layer 601232, when second conductive layer 601234 does not add electric field; Rotate light 90 degree that first conductive layer 601232 is seen through; Obtain linearly polarized light two, promptly obtain polarization image signal light two, and see through the polarization image signal light two that this obtains after rotation; When electric field provides device 60122 that electric field is provided to first conductive layer 601232, second conductive layer 601234, see through this polarization image signal light one.
Wherein, Liquid crystal layer 601233 comprises super twisted nematic STN type liquid crystal layer, and is bonding with first conductive layer 601232, is used at first conductive layer 601232, when second conductive layer 601234 does not add electric field; Rotate light 270 degree that first conductive layer 601232 is seen through; Obtain linearly polarized light two, promptly obtain polarization image signal light two, and see through the polarization image signal light two that this obtains after rotation; When electric field provides device 60122 that electric field is provided to first conductive layer 601232, second conductive layer 601234, see through this polarization image signal light one.
Wherein, electric field selector switch 60121 comprises the power supply gate, is used to select the schedule time, to the polarizer 60123 electric field is provided.
Wherein, electric field provides device 60122 to comprise power supply, and being used for provides electric field to the polarizer 60123 when 60121 selections of electric field selector switch provide electric field to the polarizer 60123.
Wherein, quarter-wave plate 601235 sees through the polarization image signal light one that second conductive layer 601234 is seen through, and the process that the polarization image signal light one that will see through changes polarization image signal light three into comprises:
Quarter-wave plate 601235 sees through direction of vibration becomes predetermined angular one with its fast axle polarization image signal light one, and the polarization image signal light one that will see through changes polarization image signal light three into.
Wherein, quarter-wave plate 601235 sees through the polarization image signal light two that second conductive layer 601234 is seen through, and the process that the polarization image signal light two that will see through changes polarization image signal light four into comprises:
Quarter-wave plate 601235 sees through direction of vibration becomes predetermined angular two with its fast axle polarization image signal light two, and the polarization image signal light two that will see through changes polarization image signal light four into.
Wherein, quarter-wave plate 601235 sees through direction of vibration becomes miter angle with its fast axle polarization image signal light one, and the polarization image signal light one that will see through changes circularly polarized light one into, promptly changes polarization image signal light three into.
Wherein, quarter-wave plate 601235 sees through direction of vibration becomes miter angle with its fast axle polarization image signal light two, and the polarization image signal light two that will see through changes circularly polarized light two into, promptly changes polarization image signal light four into.
Wherein, Projection screen 602 comprises metal shadowing's screen; Be arranged on the bang path of projection lens 6013 is projected in the projector 601 polarization image signal light five, polarization image signal light six; Be used to reflect this polarization image signal light five, obtain elliptically polarized light five, promptly obtain polarization image signal light seven; Be used to reflect this polarization image signal light six, obtain elliptically polarized light six, promptly obtain polarization image signal light eight; The direction of vibration of the polarization image signal light seven that this obtains and the direction of vibration of polarization image signal light five parallel, and the direction of vibration of the polarization image signal light eight that this obtains and the direction of vibration of polarization image signal light six parallel.
Wherein, left eyeglass quarter-wave plate 60311 sees through the polarization image signal light seven that after projection screen 602 reflections, obtains, and the process that the polarization image signal light seven that will see through changes polarization image signal light nine into comprises:
Left side eyeglass quarter-wave plate 60311 sees through direction of vibration becomes predetermined angular three with its fast axle polarization image signal light seven, and the polarization image signal light seven that will see through changes polarization image signal light nine into.
Wherein, right eyeglass quarter-wave plate 60321 sees through the polarization image signal light eight that after projection screen 602 reflections, obtains, and the process that the polarization image signal light eight that will see through changes polarization image signal light ten into comprises:
Right eyeglass quarter-wave plate 60321 sees through direction of vibration becomes predetermined angular four with its fast axle polarization image signal light eight, and the polarization image signal light eight that will see through changes polarization image signal light ten into.
Wherein, left eyeglass Polarizer 60312 comprises through the process of this polarization image signal light nine:
Polar orientation becomes predetermined angular three with the fast axle of left eyeglass quarter-wave plate 60311, is used for seeing through this polarization image signal light nine; Perhaps the direction of vibration of polar orientation and this polarization image signal light nine parallels, and is used for seeing through this polarization image signal light nine.
Wherein, right eyeglass Polarizer 60322 comprises through the process of this polarization image signal light ten:
Polar orientation becomes predetermined angular four with the fast axle of right eyeglass quarter-wave plate 60321, is used for seeing through this polarization image signal light ten; Perhaps the direction of vibration of polar orientation and this polarization image signal light ten parallels, and is used for seeing through this polarization image signal light ten.
Wherein, left eyeglass quarter-wave plate 60311 sees through direction of vibration becomes miter angle with its fast axle polarization image signal light seven, and the polarization image signal light seven that will see through changes polarization image signal light nine into.
Wherein, right eyeglass quarter-wave plate 60321 sees through direction of vibration becomes miter angle with its fast axle polarization image signal light eight, and the polarization image signal light eight that will see through changes polarization image signal light ten into.
Wherein, left eyeglass Polarizer 60312 polar orientation become miter angle with the fast axle of left eyeglass quarter-wave plate 60311, are used for seeing through this polarization image signal light nine; Perhaps the direction of vibration of polar orientation and this polarization image signal light nine parallels, and is used for seeing through this polarization image signal light nine.
Wherein, right eyeglass Polarizer 60322 polar orientation become miter angle with the fast axle of right eyeglass quarter-wave plate 60321, are used for seeing through this polarization image signal light ten; Perhaps the direction of vibration of polar orientation and this polarization image signal light ten parallels, and is used for seeing through this polarization image signal light ten.
Wherein, image signal processing equipment 6011 comprises: digital light is handled the type image signal treatment facility, is used to generate picture signal light; Or liquid crystal on silicon type image signal treatment facility, be used to generate picture signal light; Or the liquid crystal type image signal processing equipment, be used to generate picture signal light; Or display device, being used to generate picture signal light, this display device comprises TV, computer, projector, navigating instrument, mobile phone, camera.
Wherein, the polarization frequency of polagizing filter 6012 can be identical with the broadcast frequency of program source.
Wherein, Polagizing filter 6012 on schedule can be synchronous with the picture signal light that image signal processing equipment 6011 is generated like the polarization image signal light that replaces that frequency produced of per second 120 frames, and pairing each picture frame of this polarization image signal light replaces in order.
Stereo image system 600 of the present invention is used projector 601 and is produced polarization image signal light alternately like the frequency of per second 120 frames on schedule; Each picture frame replaces in order; And the direction of vibration of the polarization image signal light light when projection screen 602 reflexes to polaroid glasses 603 that replaces of this generation can not change, and the beholder can only see corresponding image through the left eyeglass of polaroid glasses 603 6031, right eyeglass 6032, and promptly the beholder receives a left-eye frame through polaroid glasses 603; Next right eye frame; Another left-eye frame then, another right eye frame next, thus in visual system, produce stereo perception; Reach the purpose of viewing and admiring stereopsis, reach the purpose of viewing and admiring stereopsis through a projector thereby reach realization.
For projector of the present invention, stereo image system, the form of realization is diversified.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (12)

1. a projector is characterized in that, comprising: image signal processing equipment, polagizing filter, projection lens;
Said image signal processing equipment is used to generate picture signal light;
Said polagizing filter is arranged on the bang path of the picture signal light that said image signal processing equipment generates, and comprising: electric field selector switch, electric field provide device, the polarizer;
Said electric field selector switch is used to select the schedule time, to the said polarizer electric field is provided;
Said electric field provides device, and being used for provides electric field to the said polarizer when said electric field selector switch selection provides electric field to the said polarizer;
The said polarizer comprises: Polarizer, first conductive layer, said liquid crystal layer, second conductive layer, quarter-wave plate;
Said Polarizer is used for seeing through the light that parallels direction with polar orientation, sees through the picture signal light that said image signal processing equipment generated, and obtains polarization image signal light one;
Said first conductive layer, bonding with said Polarizer, be used for seeing through said polarization image signal light one;
Said liquid crystal layer; Bonding with said first conductive layer, be used for rotating the light predetermined angular that said first conductive layer is seen through at said first conductive layer, when said second conductive layer does not add electric field; Obtain polarization image signal light two, and see through said polarization image signal light two; When said electric field provides device that electric field is provided to said first conductive layer, said second conductive layer, see through said polarization image signal light one;
Said second conductive layer, bonding with said liquid crystal layer, be used for seeing through polarization image signal light one, the polarization image signal light two that said liquid crystal layer saw through;
Said quarter-wave plate, bonding with said second conductive layer, be used for seeing through the polarization image signal light one that said second conductive layer is seen through, the polarization image signal light one that will see through changes polarization image signal light three into; See through the polarization image signal light two that said second conductive layer is seen through, the polarization image signal light two that will see through changes polarization image signal light four into;
Said projection lens is arranged on the bang path of said polarization image signal light three, polarization image signal light four, is used to throw said polarization image signal light three, polarization image signal light four forms images to projection screen.
2. projector as claimed in claim 1 is characterized in that, said quarter-wave plate sees through direction of vibration becomes predetermined angular one with its fast axle polarization image signal light one, and the polarization image signal light one that will see through changes polarization image signal light three into;
Said quarter-wave plate sees through direction of vibration becomes predetermined angular two with its fast axle polarization image signal light two, and the polarization image signal light two that will see through changes polarization image signal light four into.
3. according to claim 1 or claim 2 projector; It is characterized in that; Said quarter-wave plate sees through direction of vibration becomes miter angle with its fast axle polarization image signal light one, and the polarization image signal light one that will see through changes circularly polarized light one into, changes polarization image signal light three into.
Said quarter-wave plate sees through direction of vibration becomes miter angle with its fast axle polarization image signal light two, and the polarization image signal light two that will see through changes circularly polarized light two into, changes polarization image signal light four into.
4. projector as claimed in claim 1 is characterized in that, said electric field selector switch is chosen in N/120 during second, to the said polarizer electric field is provided, and said N comprises odd number, even number.
5. like claim 1 or 4 described projectors, it is characterized in that said image signal processing equipment comprises: digital light is handled the type image signal treatment facility, is used to generate picture signal light; Or liquid crystal on silicon type image signal treatment facility, be used to generate picture signal light; Or the liquid crystal type image signal processing equipment, be used to generate picture signal light; Or display device, being used to generate picture signal light, said display device comprises TV, computer, projector, navigating instrument, mobile phone, camera.
6. a stereo image system is characterized in that, comprising: projector, projection screen, polaroid glasses;
Said projector comprises: image signal processing equipment, polagizing filter, projection lens;
Said image signal processing equipment is used to generate picture signal light;
Said polagizing filter is arranged on the bang path of the picture signal light that said image signal processing equipment generates, and comprising: electric field selector switch, electric field provide device, the polarizer;
Said electric field selector switch is used to select the schedule time, to the said polarizer electric field is provided;
Said electric field provides device, and being used for provides electric field to the said polarizer when said electric field selector switch selection provides electric field to the said polarizer;
The said polarizer comprises: Polarizer, first conductive layer, liquid crystal layer, second conductive layer, quarter-wave plate;
Said Polarizer is used for seeing through the light that parallels direction with polar orientation, sees through the picture signal light that said image signal processing equipment generated, and obtains polarization image signal light one;
Said first conductive layer, bonding with said Polarizer, be used for seeing through said polarization image signal light one;
Said liquid crystal layer; Bonding with said first conductive layer, be used for rotating the light predetermined angular that said first conductive layer is seen through at said first conductive layer, when said second conductive layer does not add electric field; Obtain polarization image signal light two, and see through said polarization image signal light two; When said electric field provides device that electric field is provided to said first conductive layer, said second conductive layer, see through said polarization image signal light one;
Said second conductive layer, bonding with said liquid crystal layer, be used for seeing through polarization image signal light one, the polarization image signal light two that said liquid crystal layer saw through;
Said quarter-wave plate, bonding with said second conductive layer, be used for seeing through the polarization image signal light one that said second conductive layer is seen through, the polarization image signal light one that will see through changes polarization image signal light three into; See through the polarization image signal light two that said second conductive layer is seen through, the polarization image signal light two that will see through changes polarization image signal light four into;
Said projection lens; Be arranged on the bang path of said polarization image signal light three, polarization image signal light four; Be used for seeing through said polarization image signal light three; Change the said polarization image signal light three that sees through into polarization image signal light five, and throw said polarization image signal light five and to said projection screen, form images; See through said polarization image signal light four, change the said polarization image signal light four that sees through into polarization image signal light six, and throw said polarization image signal light six and to said projection screen, form images; The direction of vibration of the direction of vibration of said polarization image signal light five and polarization image signal light three parallels, and the direction of vibration of the direction of vibration of said polarization image signal light six and polarization image signal light four parallels;
Said projection screen is arranged on the bang path of projection lens projected described in the said projector polarization image signal light five, polarization image signal light six, is used to reflect said polarization image signal light five, obtains polarization image signal light seven; Be used to reflect said polarization image signal light six, obtain polarization image signal light eight; The direction of vibration of the said polarization image signal light seven that obtains and the direction of vibration of polarization image signal light five parallel, and the direction of vibration of the said polarization image signal light eight that obtains and the direction of vibration of polarization image signal light six parallel;
Said polaroid glasses are arranged on the bang path of the polarization image signal light seven that obtains after the reflection of said projection screen, polarization image signal light eight, comprising: left eyeglass, right eyeglass, frame;
Said left eyeglass is arranged on the said frame, comprising: left eyeglass quarter-wave plate, left eyeglass Polarizer;
Said left eyeglass quarter-wave plate is used for seeing through the polarization image signal light seven that after said projection screen reflection, obtains, and the polarization image signal light seven that will see through changes polarization image signal light nine into;
Said left eyeglass Polarizer is used for seeing through said polarization image signal light nine;
Said right eyeglass is arranged on the said frame, comprising: right eyeglass quarter-wave plate, right eyeglass Polarizer;
Said right eyeglass quarter-wave plate is used for seeing through the polarization image signal light eight that after said projection screen reflection, obtains, and the polarization image signal light eight that will see through changes polarization image signal light ten into;
Said right eyeglass Polarizer is used for seeing through said polarization image signal light ten;
The polar orientation irrelevancy of the polar orientation of said left eyeglass Polarizer and right eyeglass Polarizer is capable.
7. stereo image system as claimed in claim 6; It is characterized in that; Said quarter-wave plate sees through direction of vibration becomes predetermined angular one with its fast axle polarization image signal light one, and the polarization image signal light one that will see through changes polarization image signal light three into;
Said quarter-wave plate sees through direction of vibration becomes predetermined angular two with its fast axle polarization image signal light two, and the polarization image signal light two that will see through changes polarization image signal light four into.
8. like claim 6 or 7 described stereo image systems; It is characterized in that; Said quarter-wave plate sees through direction of vibration becomes miter angle with its fast axle polarization image signal light one; The polarization image signal light one that will see through changes circularly polarized light one into, changes polarization image signal light three into.
Said quarter-wave plate sees through direction of vibration becomes miter angle with its fast axle polarization image signal light two, and the polarization image signal light two that will see through changes circularly polarized light two into, changes polarization image signal light four into.
9. like claim 6 or 7 described stereo image systems; It is characterized in that; Said left eyeglass quarter-wave plate sees through direction of vibration becomes predetermined angular three with its fast axle polarization image signal light seven, and the polarization image signal light seven that will see through changes polarization image signal light nine into;
Said right eyeglass quarter-wave plate sees through direction of vibration becomes predetermined angular four with its fast axle polarization image signal light eight, and the polarization image signal light eight that will see through changes polarization image signal light ten into;
Said left eyeglass Polarizer, polar orientation becomes predetermined angular three with the fast axle of said left eyeglass quarter-wave plate, is used for seeing through said polarization image signal light nine; Perhaps the direction of vibration of polar orientation and said polarization image signal light nine parallels, and is used for seeing through said polarization image signal light nine;
Said right eyeglass Polarizer, polar orientation becomes predetermined angular four with the fast axle of said right eyeglass quarter-wave plate, is used for seeing through said polarization image signal light ten; Perhaps the direction of vibration of polar orientation and said polarization image signal light ten parallels, and is used for seeing through said polarization image signal light ten.
10. stereo image system as claimed in claim 9; It is characterized in that; Said left eyeglass quarter-wave plate sees through direction of vibration becomes miter angle with its fast axle polarization image signal light seven, and the polarization image signal light seven that will see through changes polarization image signal light nine into;
Said right eyeglass quarter-wave plate sees through direction of vibration becomes miter angle with its fast axle polarization image signal light eight, and the polarization image signal light eight that will see through changes polarization image signal light ten into;
Said left eyeglass Polarizer, polar orientation becomes miter angle with the fast axle of said left eyeglass quarter-wave plate, is used for seeing through said polarization image signal light nine; Perhaps the direction of vibration of polar orientation and said polarization image signal light nine parallels, and is used for seeing through said polarization image signal light nine;
Said right eyeglass Polarizer, polar orientation becomes miter angle with the fast axle of said right eyeglass quarter-wave plate, is used for seeing through said polarization image signal light ten; Perhaps the direction of vibration of polar orientation and said polarization image signal light ten parallels, and is used for seeing through said polarization image signal light ten.
11. stereo image system as claimed in claim 6 is characterized in that, said electric field selector switch is chosen in N/120 during second, to the said polarizer electric field is provided, and said N comprises odd number, even number.
12. like claim 6 or 11 described stereo image systems, it is characterized in that said image signal processing equipment comprises: digital light is handled the type image signal treatment facility, is used to generate picture signal light; Or liquid crystal on silicon type image signal treatment facility, be used to generate picture signal light; Or the liquid crystal type image signal processing equipment, be used to generate picture signal light; Or display device, being used to generate picture signal light, said display device comprises TV, computer, projector, navigating instrument, mobile phone, camera.
CN201110070876XA 2011-03-23 2011-03-23 Projector and stereoscopic image system Expired - Fee Related CN102591126B (en)

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