CN102768462A - Projector and stereoscopic image system - Google Patents
Projector and stereoscopic image system Download PDFInfo
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- CN102768462A CN102768462A CN2011101157232A CN201110115723A CN102768462A CN 102768462 A CN102768462 A CN 102768462A CN 2011101157232 A CN2011101157232 A CN 2011101157232A CN 201110115723 A CN201110115723 A CN 201110115723A CN 102768462 A CN102768462 A CN 102768462A
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Abstract
The invention discloses a projector which applies a polarization filter to generate elliptically polarized lights which alternate in preset time such as 120frames each second; then image signal processing equipment processes the elliptically polarized lights to obtain polarization image signal rays synchronizing with the elliptically polarized lights; image frames alternate in sequence; then a projector lens converts the polarization image signal rays to new polarization image signal rays which have vibrating directions in parallel to that of the polarization image signal rays and have the same polarization frequency with the polarization image signal rays; when the new polarization image signal rays are reflected to polaroid glasses through a projection screen, the vibrating directions of the rays do not change, and an observer can see corresponding images through the left eyeglass and the right eyeglass of the polaroid glasses, namely, the observer sequentially receives a left eye frame, a right eye frame, a left eye frame and a right eye frame so as to have stereoscopic perception in a visual nerve system and reach the objective of enjoying stereoscopic image; thereby achieving the objective of enjoying the stereoscopic image through one projector.
Description
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 102 is arranged on the bang path of the light that light source 101 provided, and is used to handle the light that light source 101 is provided, and generates picture signal light;
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: light source 201, digital light are handled type image signal treatment facility 202, projection lens 203;
Digital light is handled type image signal treatment facility 202, is arranged on the bang path of the light that light source 201 provided, and is used to handle the light that light source 201 is provided, and generates picture signal light, comprising:
Digital micro-mirror device 2022 is arranged on the bang path of the light that light source 201 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 2021 is projected, and makes this light that reflects depart from projection lens 203; The micro mirror that presents the ON state; Be used to reflect light to the projection lens 203 that relay lens 2021 is projected, this light that reflexes to projection lens 203 promptly becomes image, has promptly generated picture signal light;
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: light source 301, liquid crystal on silicon type image signal treatment facility 302, projection lens 303;
Liquid crystal on silicon type image signal treatment facility 302 is arranged on the bang path of the light that light source 301 provided, and is used to handle the light that light source 301 is provided, and generates picture signal light, comprising:
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 3024;
Refracting telescope 2 3023 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 3024;
Liquid crystal on silicon imaging system 3024 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;
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 402 is arranged on the bang path of the light that light source 401 provided, and is used to handle the light that light source 401 is provided, and generates picture signal light;
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: light source, polagizing filter, image signal processing equipment, projection lens;
Said light source is used to provide light;
Said polagizing filter is arranged on the bang path of the light that said light source provides, 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 light that said light source provided, and obtains linearly polarized light one;
Said first conductive layer, bonding with said Polarizer, be used for seeing through said linearly polarized 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 linearly polarized light two, and see through the said linearly polarized light two that after rotation, obtains; When said electric field provides device that electric field is provided to said first conductive layer, said second conductive layer, see through said linearly polarized light one;
Said second conductive layer, bonding with said liquid crystal layer, be used for seeing through linearly polarized light one, the linearly polarized 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 linearly polarized light one that said second conductive layer is seen through, the linearly polarized light one that will see through changes elliptically polarized light one into; See through the linearly polarized light two that said second conductive layer is seen through, the linearly polarized light two that will see through changes elliptically polarized light two into;
Said image signal processing equipment; Be arranged on the bang path of the polarizer saw through described in the said polagizing filter elliptically polarized light one, elliptically polarized light two; Be used to handle said elliptically polarized light one, obtain elliptically polarized light three, obtain polarization image signal light one; Handle said elliptically polarized light two, obtain elliptically polarized light four, obtain polarization image signal light two; The direction of vibration of the said polarization image signal light one that obtains and the direction of vibration of said elliptically polarized light one parallel, and the direction of vibration of the said polarization image signal light two that obtains and the direction of vibration of said elliptically polarized light two parallel;
Said projection lens is arranged on the bang path of said polarization image signal light one, polarization image signal light two, is used to throw said polarization image signal light one, polarization image signal light two 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: light source, polagizing filter, image signal processing equipment, projection lens;
Said light source is used to provide light;
Said polagizing filter is arranged on the bang path of the light that said light source provides, 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 light that said light source provided, and obtains linearly polarized light one;
Said first conductive layer, bonding with said Polarizer, be used for seeing through said linearly polarized 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 linearly polarized light two, and see through the said linearly polarized light two that after rotation, obtains; When said electric field provides device that electric field is provided to said first conductive layer, said second conductive layer, see through said linearly polarized light one;
Said second conductive layer, bonding with said liquid crystal layer, be used for seeing through linearly polarized light one, the linearly polarized 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 linearly polarized light one that said second conductive layer is seen through, the linearly polarized light one that will see through changes elliptically polarized light one into; See through the linearly polarized light two that said second conductive layer is seen through, the linearly polarized light two that will see through changes elliptically polarized light two into;
Said image signal processing equipment; Be arranged on the bang path of the polarizer saw through described in the said polagizing filter elliptically polarized light one, elliptically polarized light two; Be used to handle said elliptically polarized light one, obtain elliptically polarized light three, obtain polarization image signal light one; Handle said elliptically polarized light two, obtain elliptically polarized light four, obtain polarization image signal light two; The direction of vibration of the said polarization image signal light one that obtains and the direction of vibration of said elliptically polarized light one parallel, and the direction of vibration of the said polarization image signal light two that obtains and the direction of vibration of said elliptically polarized light two parallel;
Said projection lens; Be arranged on the bang path of said polarization image signal light one, polarization image signal light two; Be used for seeing through said polarization image signal light one; Change the said polarization image signal light one that sees through into elliptically polarized light five, change polarization image signal light three into, and throw said polarization image signal light three and to said projection screen, form images; See through said polarization image signal light two, change the said polarization image signal light two that sees through into elliptically polarized light six, change polarization image signal light four into, and throw said polarization image signal light four and to said projection screen, form images; The direction of vibration of the direction of vibration of said polarization image signal light three and said polarization image signal light one parallels, and the direction of vibration of the direction of vibration of said polarization image signal light four and said polarization image signal light two parallels;
Said projection screen is arranged on the bang path of projection lens projected described in the said projector polarization image signal light three, polarization image signal light four, is used to reflect said polarization image signal light three, obtains polarization image signal light five; Be used to reflect said polarization image signal light four, obtain polarization image signal light six; The direction of vibration of the said polarization image signal light five that obtains and the direction of vibration of polarization image signal light three parallel, and the direction of vibration of the said polarization image signal light six that obtains and the direction of vibration of polarization image signal light four parallel;
Said polaroid glasses are arranged on the bang path of the polarization image signal light five that obtains after the reflection of said projection screen, polarization image signal light six, 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 five that after said projection screen reflection, obtains, and the polarization image signal light five that will see through changes polarization image signal light seven into;
Said left eyeglass Polarizer is used for seeing through said polarization image signal light seven;
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 six that after said projection screen reflection, obtains, and the polarization image signal light six that will see through changes polarization image signal light eight into;
Said right eyeglass Polarizer is used for seeing through said polarization image signal light eight;
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 elliptically polarized light that the frequency like per second 120 frames replaces; Image signal processing equipment is handled this elliptically polarized light then, obtain can with the polarization image signal light of this elliptic polarization phototiming, 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 the left and right eyeglass of polaroid glasses, 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, the elliptically polarized light that projector applications polagizing filter of the present invention produces on schedule as the frequency of per second 120 frames replaces, this elliptically polarized light of image signal processing equipment processing then; Obtain can with the polarization image signal light of this elliptic polarization phototiming; Each picture frame replaces in order, and 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; The beholder can only see corresponding image through the left and right eyeglass of polaroid glasses; Be that the beholder receives a left-eye frame through polaroid glasses, next a right eye frame, another left-eye frame then; Next another right eye frame; Thereby 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: light source 501, polagizing filter 502, image signal processing equipment 503, projection lens 504;
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;
First conductive layer 50232, bonding with Polarizer 50231, be used for seeing through this linearly polarized light one;
Second conductive layer 50234, bonding with liquid crystal layer 50233, be used for seeing through linearly polarized light one, the linearly polarized 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 linearly polarized light one that second conductive layer 50234 is seen through, the linearly polarized light one that will see through changes elliptically polarized light one into; See through the linearly polarized light two that second conductive layer 50234 is seen through, the linearly polarized light two that will see through changes elliptically polarized light two into;
Image signal processing equipment 503; Be arranged on the bang path of the polarizer 5023 is seen through in the polagizing filter 502 elliptically polarized light one, elliptically polarized light two; Be used to handle this elliptically polarized light one, obtain elliptically polarized light three, promptly obtain polarization image signal light one; Handle this elliptically polarized light two, obtain elliptically polarized light four, promptly obtain polarization image signal light two; The direction of vibration of the polarization image signal light one that this obtains can parallel with the direction of vibration of this elliptically polarized light one, and the direction of vibration of the polarization image signal light two that this obtains can parallel with the direction of vibration of this elliptically polarized light two;
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 linearly polarized 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 linearly polarized light one, the linearly polarized 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 linearly polarized light two, and see through the linearly polarized 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 linearly polarized 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 linearly polarized light two, and see through the linearly polarized 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 linearly polarized 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 linearly polarized light one that second conductive layer 50234 is seen through, and the process that the linearly polarized light one that will see through changes elliptically polarized light one into comprises:
Quarter-wave plate 50235 sees through direction of vibration becomes predetermined angular one with its fast axle linearly polarized light one, and the linearly polarized light one that will see through changes elliptically polarized light one into.
Wherein, quarter-wave plate 50235 sees through the linearly polarized light two that second conductive layer 50234 is seen through, and the process that the linearly polarized light two that will see through changes elliptically polarized light two into comprises:
Quarter-wave plate 50235 sees through direction of vibration becomes predetermined angular two with its fast axle linearly polarized light two, and the linearly polarized light two that will see through changes elliptically polarized light two into.
Wherein, quarter-wave plate 50235 sees through direction of vibration becomes miter angle with its fast axle linearly polarized light one, and the linearly polarized light one that will see through changes circularly polarized light one into.
Wherein, quarter-wave plate 50235 sees through direction of vibration becomes miter angle with its fast axle linearly polarized light two, and the linearly polarized light two that will see through changes circularly polarized light two into.
Wherein, image signal processing equipment 503 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, The polarization image flashlight line locking that polagizing filter 502 can be generated with image signal processing equipment 503 like the elliptically polarized light that replaces that frequency produced of per second 120 frames on schedule, pairing each picture frame of this polarization image signal light replaces in order.
Wherein, polagizing filter 502 can be arranged at the optional position in the image signal processing equipment 503, can be arranged at the optional position between image signal processing equipment 503 and the projection lens 504, can be arranged at the optional position in the projector 500.
Projector of the present invention 500 uses polagizing filters 502 and produces on schedule the elliptically polarized light that the frequency like per second 120 frames replaces; Image signal processing equipment 503 is handled these elliptically polarized lights then, obtain can with the polarization image signal light of this elliptic polarization phototiming, each picture frame replaces in order; Then projection lens 504 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 the left and right eyeglass of polaroid glasses, 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;
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;
First conductive layer 601232, bonding with Polarizer 601231, be used for seeing through this linearly polarized light one;
Second conductive layer 601234, bonding with liquid crystal layer 601233, be used for seeing through linearly polarized light one, the linearly polarized 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 linearly polarized light one that second conductive layer 601234 is seen through, the linearly polarized light one that will see through changes elliptically polarized light one into; See through the linearly polarized light two that second conductive layer 601234 is seen through, the linearly polarized light two that will see through changes elliptically polarized light two into;
Image signal processing equipment 6013; Be arranged on the bang path of the polarizer 60123 is seen through in the polagizing filter 6012 elliptically polarized light one, elliptically polarized light two; Be used to handle this elliptically polarized light one, obtain elliptically polarized light three, promptly obtain polarization image signal light one; Handle this elliptically polarized light two, obtain elliptically polarized light four, promptly obtain polarization image signal light two; The direction of vibration of the polarization image signal light one that this obtains can parallel with the direction of vibration of this elliptically polarized light one, and the direction of vibration of the polarization image signal light two that this obtains can parallel with the direction of vibration of this elliptically polarized light two;
Left side eyeglass quarter-wave plate 60311 is used for seeing through the polarization image signal light five that after projection screen 602 reflections, obtains, and the polarization image signal light five that will see through changes linearly polarized light three into, promptly changes polarization image signal light seven into;
Left side eyeglass Polarizer 60312 is used for seeing through this polarization image signal light seven;
Right eyeglass quarter-wave plate 60321 is used for seeing through the polarization image signal light six that after projection screen 602 reflections, obtains, and the polarization image signal light six that will see through changes linearly polarized light four into, promptly changes polarization image signal light eight into;
Wherein, the polar orientation irrelevancy of the polar orientation of left eyeglass Polarizer 60312 and right eyeglass Polarizer 60322 is 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 linearly polarized 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 linearly polarized light one, the linearly polarized light two that liquid crystal layer 601233 is seen through.
Wherein, Liquid crystal layer 601233 comprises twisted-nematic TN type liquid crystal layer; Bonding with first conductive layer 601232, be 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, and see through the linearly polarized 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 linearly polarized light one.
Wherein, Liquid crystal layer 601233 comprises super twisted nematic STN type liquid crystal layer; Bonding with first conductive layer 601232, be 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, and see through the linearly polarized 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 linearly polarized 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 linearly polarized light one that second conductive layer 601234 is seen through, and the process that the linearly polarized light one that will see through changes elliptically polarized light one into comprises:
Quarter-wave plate 601235 sees through direction of vibration becomes predetermined angular one with its fast axle linearly polarized light one, and the linearly polarized light one that will see through changes elliptically polarized light one into.
Wherein, quarter-wave plate 601235 sees through the linearly polarized light two that second conductive layer 601234 is seen through, and the process that the linearly polarized light two that will see through changes elliptically polarized light two into comprises:
Quarter-wave plate 601235 sees through direction of vibration becomes predetermined angular two with its fast axle linearly polarized light two, and the linearly polarized light two that will see through changes elliptically polarized light two into.
Wherein, quarter-wave plate 601235 sees through direction of vibration becomes miter angle with its fast axle linearly polarized light one, and the linearly polarized light one that will see through changes circularly polarized light one into.
Wherein, quarter-wave plate 601235 sees through direction of vibration becomes miter angle with its fast axle linearly polarized light two, and the linearly polarized light two that will see through changes circularly polarized light two into.
Wherein, Projection screen 602 comprises metal shadowing's screen; Be arranged on the bang path of projection lens 6014 is projected in the projector 601 polarization image signal light three, polarization image signal light four, be used to reflect this polarization image signal light three, obtain polarization image signal light five; Be used to reflect this polarization image signal light four, obtain polarization image signal light six; The direction of vibration of the polarization image signal light five that this obtains and the direction of vibration of polarization image signal light three parallel, and the direction of vibration of the polarization image signal light six that this obtains and the direction of vibration of polarization image signal light four parallel.
Wherein, left eyeglass quarter-wave plate 60311 sees through the polarization image signal light five that after projection screen 602 reflections, obtains, and the process that the polarization image signal light five that will see through changes polarization image signal light seven 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 five, and the polarization image signal light five that will see through changes polarization image signal light seven into.
Wherein, right eyeglass quarter-wave plate 60321 sees through the polarization image signal light six that after projection screen 602 reflections, obtains, and the process that the polarization image signal light six that will see through changes polarization image signal light eight 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 six, and the polarization image signal light six that will see through changes polarization image signal light eight into.
Wherein, left eyeglass Polarizer 60312 comprises through the process of this polarization image signal light seven:
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 seven; Perhaps the direction of vibration of polar orientation and this polarization image signal light seven parallels, and is used for seeing through this polarization image signal light seven.
Wherein, right eyeglass Polarizer 60322 comprises through the process of this polarization image signal light eight:
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 eight; Perhaps the direction of vibration of polar orientation and this polarization image signal light eight parallels, and is used for seeing through this polarization image signal light eight.
Wherein, left eyeglass quarter-wave plate 60311 sees through direction of vibration becomes miter angle with its fast axle polarization image signal light five, and the polarization image signal light five that will see through changes polarization image signal light seven into.
Wherein, right eyeglass quarter-wave plate 60321 sees through direction of vibration becomes miter angle with its fast axle polarization image signal light six, and the polarization image signal light six that will see through changes polarization image signal light eight 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 seven; Perhaps the direction of vibration of polar orientation and this polarization image signal light seven parallels, and is used for seeing through this polarization image signal light seven.
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 eight; Perhaps the direction of vibration of polar orientation and this polarization image signal light eight parallels, and is used for seeing through this polarization image signal light eight.
Wherein, image signal processing equipment 6013 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, The polarization image flashlight line locking that polagizing filter 6012 can be generated with image signal processing equipment 6013 like the elliptically polarized light that replaces that frequency produced of per second 120 frames on schedule, pairing each picture frame of this polarization image signal light replaces in order.
Wherein, polagizing filter 6012 can be arranged at the optional position in the image signal processing equipment 6013, can be arranged at the optional position between image signal processing equipment 6013 and the projection lens 6014, can be arranged at the optional position in the projector 601.
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: light source, polagizing filter, image signal processing equipment, projection lens;
Said light source is used to provide light;
Said polagizing filter is arranged on the bang path of the light that said light source provides, 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 light that said light source provided, and obtains linearly polarized light one;
Said first conductive layer, bonding with said Polarizer, be used for seeing through said linearly polarized 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 linearly polarized light two, and see through the said linearly polarized light two that after rotation, obtains; When said electric field provides device that electric field is provided to said first conductive layer, said second conductive layer, see through said linearly polarized light one;
Said second conductive layer, bonding with said liquid crystal layer, be used for seeing through linearly polarized light one, the linearly polarized 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 linearly polarized light one that said second conductive layer is seen through, the linearly polarized light one that will see through changes elliptically polarized light one into; See through the linearly polarized light two that said second conductive layer is seen through, the linearly polarized light two that will see through changes elliptically polarized light two into;
Said image signal processing equipment; Be arranged on the bang path of the polarizer saw through described in the said polagizing filter elliptically polarized light two, elliptically polarized light two; Be used to handle said elliptically polarized light one, obtain elliptically polarized light three, obtain polarization image signal light one; Handle said elliptically polarized light two, obtain elliptically polarized light four, obtain polarization image signal light two; The direction of vibration of the said polarization image signal light one that obtains and the direction of vibration of said elliptically polarized light one parallel, and the direction of vibration of the said polarization image signal light two that obtains and the direction of vibration of said elliptically polarized light two parallel;
Said projection lens is arranged on the bang path of said polarization image signal light one, polarization image signal light two, is used to throw said polarization image signal light one, polarization image signal light two 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 linearly polarized light one, and the linearly polarized light one that will see through changes elliptically polarized light one into;
Said quarter-wave plate sees through direction of vibration becomes predetermined angular two with its fast axle linearly polarized light two, and the linearly polarized light two that will see through changes elliptically polarized light two into.
3. according to claim 1 or claim 2 projector is characterized in that, said quarter-wave plate sees through fast linearly polarized light one that becomes miter angle of direction of vibration and its, and the linearly polarized light one that will see through changes elliptically polarized light one into;
Said quarter-wave plate sees through direction of vibration becomes miter angle with its fast axle linearly polarized light two, and the linearly polarized light two that will see through changes elliptically polarized light two 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: light source, polagizing filter, image signal processing equipment, projection lens;
Said light source is used to provide light;
Said polagizing filter is arranged on the bang path of the light that said light source provides, 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 light that said light source provided, and obtains linearly polarized light one;
Said first conductive layer, bonding with said Polarizer, be used for seeing through said linearly polarized 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 linearly polarized light two, and see through the said linearly polarized light two that after rotation, obtains; When said electric field provides device that electric field is provided to said first conductive layer, said second conductive layer, see through said linearly polarized light one;
Said second conductive layer, bonding with said liquid crystal layer, be used for seeing through linearly polarized light one, the linearly polarized 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 linearly polarized light one that said second conductive layer is seen through, the linearly polarized light one that will see through changes elliptically polarized light one into; See through the linearly polarized light two that said second conductive layer is seen through, the linearly polarized light two that will see through changes elliptically polarized light two into;
Said image signal processing equipment; Be arranged on the bang path of the polarizer saw through described in the said polagizing filter elliptically polarized light one, elliptically polarized light two; Be used to handle said elliptically polarized light one, obtain elliptically polarized light three, obtain polarization image signal light one; Handle said elliptically polarized light two, obtain elliptically polarized light four, obtain polarization image signal light two; The direction of vibration of the said polarization image signal light one that obtains and the direction of vibration of said elliptically polarized light one parallel, and the direction of vibration of the said polarization image signal light two that obtains and the direction of vibration of said elliptically polarized light two parallel;
Said projection lens; Be arranged on the bang path of said polarization image signal light one, polarization image signal light two; Be used for seeing through said polarization image signal light one; Change the said polarization image signal light one that sees through into elliptically polarized light five, change polarization image signal light three into, and throw said polarization image signal light three and to said projection screen, form images; See through said polarization image signal light two, change the said polarization image signal light two that sees through into elliptically polarized light six, change polarization image signal light four into, and throw said polarization image signal light four and to said projection screen, form images; The direction of vibration of the direction of vibration of said polarization image signal light three and said polarization image signal light one parallels, and the direction of vibration of the direction of vibration of said polarization image signal light four and said polarization image signal light two parallels;
Said projection screen is arranged on the bang path of projection lens projected described in the said projector polarization image signal light three, polarization image signal light four, is used to reflect said polarization image signal light three, obtains polarization image signal light five; Be used to reflect said polarization image signal light four, obtain polarization image signal light six; The direction of vibration of the said polarization image signal light five that obtains and the direction of vibration of polarization image signal light three parallel, and the direction of vibration of the said polarization image signal light six that obtains and the direction of vibration of polarization image signal light four parallel;
Said polaroid glasses are arranged on the bang path of the polarization image signal light five that obtains after the reflection of said projection screen, polarization image signal light six, 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 five that after said projection screen reflection, obtains, and the polarization image signal light five that will see through changes polarization image signal light seven into;
Said left eyeglass Polarizer is used for seeing through said polarization image signal light seven;
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 six that after said projection screen reflection, obtains, and the polarization image signal light six that will see through changes polarization image signal light eight into;
Said right eyeglass Polarizer is used for seeing through said polarization image signal light eight;
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 is characterized in that, said quarter-wave plate sees through direction of vibration becomes predetermined angular one with its fast axle linearly polarized light one, and the linearly polarized light one that will see through changes elliptically polarized light one into;
Said quarter-wave plate sees through direction of vibration becomes predetermined angular two with its fast axle linearly polarized light two, and the linearly polarized light two that will see through changes elliptically polarized light two 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 linearly polarized light one, the linearly polarized light one that will see through changes elliptically polarized light one into;
Said quarter-wave plate sees through direction of vibration becomes miter angle with its fast axle linearly polarized light two, and the linearly polarized light two that will see through changes elliptically polarized light two 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 five, and the polarization image signal light five that will see through changes polarization image signal light seven into;
Said right eyeglass quarter-wave plate sees through direction of vibration becomes predetermined angular four with its fast axle polarization image signal light six, and the polarization image signal light six that will see through changes polarization image signal light eight 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 seven; Perhaps the direction of vibration of polar orientation and said polarization image signal light seven parallels, and is used for seeing through said polarization image signal light seven;
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 eight; Perhaps the direction of vibration of polar orientation and said polarization image signal light eight parallels, and is used for seeing through said polarization image signal light eight.
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 five, and the polarization image signal light five that will see through changes polarization image signal light seven into;
Said right eyeglass quarter-wave plate sees through direction of vibration becomes miter angle with its fast axle polarization image signal light six, and the polarization image signal light six that will see through changes polarization image signal light eight 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 seven; Perhaps the direction of vibration of polar orientation and said polarization image signal light seven parallels, and is used for seeing through said polarization image signal light seven;
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 eight; Perhaps the direction of vibration of polar orientation and said polarization image signal light eight parallels, and is used for seeing through said polarization image signal light eight.
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.
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| CN201110115723.2A CN102768462B (en) | 2011-05-05 | 2011-05-05 | Projector, stereo image system |
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| CN201110115723.2A CN102768462B (en) | 2011-05-05 | 2011-05-05 | Projector, stereo image system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114594599A (en) * | 2020-12-03 | 2022-06-07 | 中国科学院理化技术研究所 | Device for realizing display in different directions |
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| US6151094A (en) * | 1995-10-23 | 2000-11-21 | Hughes Electronics Corporation | Reflective liquid crystal display and transmissive dye-doped liquid crystal display |
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