CA2162691A1 - Low Profile Liquid Crystal Projector and Method of Using the Same - Google Patents

Low Profile Liquid Crystal Projector and Method of Using the Same

Info

Publication number
CA2162691A1
CA2162691A1 CA2162691A CA2162691A CA2162691A1 CA 2162691 A1 CA2162691 A1 CA 2162691A1 CA 2162691 A CA2162691 A CA 2162691A CA 2162691 A CA2162691 A CA 2162691A CA 2162691 A1 CA2162691 A1 CA 2162691A1
Authority
CA
Canada
Prior art keywords
liquid crystal
panel
low profile
angle
normal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2162691A
Other languages
French (fr)
Other versions
CA2162691C (en
Inventor
Leonid Shapiro
David W. Kappel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Proxima Corp
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2162691A1 publication Critical patent/CA2162691A1/en
Application granted granted Critical
Publication of CA2162691C publication Critical patent/CA2162691C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/28—Reflectors in projection beam
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7441—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of liquid crystal cells
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • G09G2340/0414—Vertical resolution change
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • G09G2340/0421—Horizontal resolution change
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0464—Positioning
    • G09G2340/0471—Vertical positioning
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0464—Positioning
    • G09G2340/0478—Horizontal positioning
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0464—Positioning
    • G09G2340/0485—Centering horizontally or vertically

Abstract

A low profile liquid crystal projector unit (10) and a method of using it to project an image with substantially no keystoning effects.
An optics arrangement directs high intensity light within a housing along a path through a liquid crystal display panel (12) at an angle offset from a normal axis of the panel. The liquid crystal panel is inclined within the housing and an output mirror (24) mounted above the housing is inclined angularly opposite to the liquid crystal panel and cooperates with a lens set (71-75) for projecting the image onto a remote surface (60). The output mirror is mounted to reflect the image at an angle to the normal of the remote surface substantially equal to the angle the light path is offset from the normal of the panel.
CA002162691A 1993-05-11 1994-04-14 Low profile liquid crystal projector and method of using the same Expired - Fee Related CA2162691C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/059,550 US5321450A (en) 1993-05-11 1993-05-11 Low profile liquid crystal projector and method of using same
US08/059,550 1993-09-17

Publications (2)

Publication Number Publication Date
CA2162691A1 true CA2162691A1 (en) 1994-11-24
CA2162691C CA2162691C (en) 1999-01-19

Family

ID=22023702

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002162691A Expired - Fee Related CA2162691C (en) 1993-05-11 1994-04-14 Low profile liquid crystal projector and method of using the same

Country Status (6)

Country Link
US (3) US5321450A (en)
EP (1) EP0698227A4 (en)
JP (2) JPH08508828A (en)
AU (1) AU668823B2 (en)
CA (1) CA2162691C (en)
WO (1) WO1994027184A1 (en)

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US6882384B1 (en) 1995-05-23 2005-04-19 Colorlink, Inc. Color filters and sequencers using color selective light modulators
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US6707516B1 (en) 1995-05-23 2004-03-16 Colorlink, Inc. Single-panel field-sequential color display systems
US6417892B1 (en) 1995-05-23 2002-07-09 Colorlink, Inc. Color filters, sequencers and displays using color selective light modulators
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US5622417A (en) * 1995-11-01 1997-04-22 Lightware, Inc. Invertible and orthoscopic liquid crystal display projector
US5642927A (en) * 1995-11-22 1997-07-01 Lightware, Inc. LCD projector with retractable projection lens assembly
US5820242A (en) * 1996-03-29 1998-10-13 Minnesota Mining And Manufacturing Company Compact integrated LCD projector
US5768032A (en) * 1996-06-04 1998-06-16 Industrial Technology Research Institute Large aperture projection lens
US5639152A (en) * 1996-06-11 1997-06-17 Telex Communications, Inc. Collapsible LCD projector
US5982553A (en) 1997-03-20 1999-11-09 Silicon Light Machines Display device incorporating one-dimensional grating light-valve array
US5826962A (en) * 1997-04-30 1998-10-27 Minnesota Mining And Manufacturing Company LCD integrated/overhead projector
US6088102A (en) 1997-10-31 2000-07-11 Silicon Light Machines Display apparatus including grating light-valve array and interferometric optical system
US6271808B1 (en) 1998-06-05 2001-08-07 Silicon Light Machines Stereo head mounted display using a single display device
US6130770A (en) 1998-06-23 2000-10-10 Silicon Light Machines Electron gun activated grating light valve
US6101036A (en) 1998-06-23 2000-08-08 Silicon Light Machines Embossed diffraction grating alone and in combination with changeable image display
US6215579B1 (en) 1998-06-24 2001-04-10 Silicon Light Machines Method and apparatus for modulating an incident light beam for forming a two-dimensional image
US6303986B1 (en) 1998-07-29 2001-10-16 Silicon Light Machines Method of and apparatus for sealing an hermetic lid to a semiconductor die
US6190015B1 (en) * 1999-08-05 2001-02-20 Mustek Systems, Inc. Liquid crystal display projector with a lens shading device capable shading and positioning lens
US6753907B1 (en) 1999-12-23 2004-06-22 Justsystem Corporation Method and apparatus for automatic keystone correction
US6811265B2 (en) * 2000-01-13 2004-11-02 Kevin James Soper Retractable image projecting system
AUPR306701A0 (en) * 2001-02-14 2001-03-08 Digislide International Pty Ltd Personal entertainment arrangement
US6707591B2 (en) 2001-04-10 2004-03-16 Silicon Light Machines Angled illumination for a single order light modulator based projection system
US6782205B2 (en) 2001-06-25 2004-08-24 Silicon Light Machines Method and apparatus for dynamic equalization in wavelength division multiplexing
US6747781B2 (en) 2001-06-25 2004-06-08 Silicon Light Machines, Inc. Method, apparatus, and diffuser for reducing laser speckle
US6829092B2 (en) 2001-08-15 2004-12-07 Silicon Light Machines, Inc. Blazed grating light valve
US6800238B1 (en) 2002-01-15 2004-10-05 Silicon Light Machines, Inc. Method for domain patterning in low coercive field ferroelectrics
US6767751B2 (en) 2002-05-28 2004-07-27 Silicon Light Machines, Inc. Integrated driver process flow
US6728023B1 (en) 2002-05-28 2004-04-27 Silicon Light Machines Optical device arrays with optimized image resolution
US6822797B1 (en) 2002-05-31 2004-11-23 Silicon Light Machines, Inc. Light modulator structure for producing high-contrast operation using zero-order light
US6829258B1 (en) 2002-06-26 2004-12-07 Silicon Light Machines, Inc. Rapidly tunable external cavity laser
US6813059B2 (en) 2002-06-28 2004-11-02 Silicon Light Machines, Inc. Reduced formation of asperities in contact micro-structures
US6801354B1 (en) 2002-08-20 2004-10-05 Silicon Light Machines, Inc. 2-D diffraction grating for substantially eliminating polarization dependent losses
US6712480B1 (en) 2002-09-27 2004-03-30 Silicon Light Machines Controlled curvature of stressed micro-structures
US6806997B1 (en) 2003-02-28 2004-10-19 Silicon Light Machines, Inc. Patterned diffractive light modulator ribbon for PDL reduction
US6829077B1 (en) 2003-02-28 2004-12-07 Silicon Light Machines, Inc. Diffractive light modulator with dynamically rotatable diffraction plane
JP2005043739A (en) * 2003-07-24 2005-02-17 Olympus Corp Projector
US7077528B1 (en) * 2004-04-22 2006-07-18 Raytheon Company Digital projection display system with external light source
US20060162198A1 (en) * 2005-01-21 2006-07-27 Dimplex North America Limited Flame simulating assembly
US20070091452A1 (en) * 2005-10-25 2007-04-26 Scott Lerner Projection system and method
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Also Published As

Publication number Publication date
WO1994027184A1 (en) 1994-11-24
US5321450A (en) 1994-06-14
US5453803A (en) 1995-09-26
AU6703494A (en) 1994-12-12
JPH08508828A (en) 1996-09-17
EP0698227A1 (en) 1996-02-28
CA2162691C (en) 1999-01-19
EP0698227A4 (en) 1996-10-16
JPH06347749A (en) 1994-12-22
AU668823B2 (en) 1996-05-16
US5483382A (en) 1996-01-09

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