High efficiency field-sequential color projector using two SLMs

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5921650
SERIAL NO

09032494

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A display is disclosed operating in a field-sequential color mode having first and second light valves which are simultaneously illuminated with different color beams having different polarizations provided from a color wheel. The light valves provide an image forming light to a projection lens for projecting the image forming light onto a screen. The wheel has front and back surfaces which are displaced from each other and have segments of different colors for separating a polarized white light into the simultaneous different color beams. A retardation film for converting the polarization of colors reflected from the back surface from a first polarization to a second polarization. The wheel is rotated for sequentially illuminating the light valves with different colors of different polarizations simultaneously. The display further includes a polarizing beam splitter assembly for directing the different color light beams from the wheel to the light valves and directing the image forming light to the projection lens. The polarizing beam splitter assembly includes a plurality of polarizing beam splitter sub-assemblies. A clean-up polarizer for absorbing the first or second polarizations is located between two halves of the polarizing beam splitter assembly.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
INTERNATIONAL BUSINESS MACHINES CORPORATIONARMONK, NY44232

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Doany, Fuad Elias Katonah, NY 40 1235
Rosenbluth, Alan Edward Yorktown Heights, NY 25 491

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Goldstar Co., Ltd. (1)
* 5463433 Image projector 17 1994
 
BROTHER KOGYO KABUSHIKI KAISHA (1)
* 5046162 Image input device having color filters and filter position detector 21 1989
 
TEXAS INSTRUMENTS INCORPORATED (5)
* 5371543 Monolithic color wheel 121 1993
* 5467146 Illumination control unit for display system with spatial light modulator 153 1994
* 5612753 Full-color projection display system using two light modulators 95 1995
* 5777694 Color wheel with plastic film filters 16 1995
* 5774196 Method and apparatus of aligning color modulation data to color wheel filter segments 73 1996
 
VICTOR COMPANY OF JAPAN, LTD. (1)
* 4851899 Field-sequential color television camera 17 1988
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (11)
* 2004/0218,150 Projection display device 1 2004
* 2005/0001,995 Color recapture for display systems 0 2004
7403320 2-channel display system comprising micro electro mechanical systems 1 2004
7929208 Complex polarizer system for reciprocal polarization (cross-polarizer) 0 2005
* 2007/0257,204 Light emitting material integrated into a substantially transparent substrate 0 2006
* 2007/0103,563 Color-Balanced Brightness Enhancement for Display System 1 2006
8102589 Superposition system comprising micro electro mechanical systems 0 2007
7466473 2-channel display system comprising micro electro mechanical systems 0 2007
* 2007/0171,533 Superposition system comprising micro electro mechanical systems 1 2007
7817329 2-channel display system comprising micro electro mechanical systems 0 2007
* 2008/0096,598 2-Channel display system comprising micro electro mechanical systems 0 2007
 
MINOLTA CO., LTD. (1)
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SEIKO EPSON CORPORATION (2)
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6805450 Projector 4 2001
 
HITACHI MAXELL, LTD. (4)
6952241 Optical unit, video display apparatus, and color switching method 5 2001
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* 2006/0012,722 Optical unit, video display apparatus, and color switching method 2 2005
7929064 Optical unit, video display apparatus, and color switching method 0 2008
 
SONY CORPORATION (2)
* 6467910 Image projector 36 2000
* 6568815 Picture projection apparatus 19 2001
 
SAMSUNG ELECTRONICS CO., LTD. (3)
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7393106 Color filter unit and projection system employing the same 1 2004
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TRANSPACIFIC IP LTD. (1)
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JASPER DISPLAY CORP. (3)
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JDS UNIPHASE CORPORATION (4)
6886943 High-resolution projection display system 10 2003
* 2005/0088,629 HIGH-RESOLUTION PROJECTION DISPLAY SYSTEM 10 2003
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NEC DISPLAY SOLUTIONS, LTD. (2)
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6795249 Reflective time-division image projector having a transmission color wheel 5 2003
 
APPLE INC. (3)
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9494994 Power management for a graphics processing unit or other circuit 0 2014
 
U.S. PRECISION LENS INCORPORATED (1)
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INTELLECTUAL VENTURES I LLC (1)
* 6575579 Projecting device with a cylindrical color tube for displaying color images 3 2000
 
CITIZEN FINETECH MIYOTA CO., LTD. (2)
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YOUNG OPTICS INC. (1)
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AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD. (1)
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RAKUTEN, INC. (1)
6862047 Image projection apparatus 8 2001
 
CANON KABUSHIKI KAISHA (2)
* 9152034 Image display apparatus for displaying three-dimensional image and having a phase difference plate 0 2011
* 2012/0162,609 IMAGE DISPLAY APPARATUS CAPABLE OF DISPLAYING THREE-DIMENSIONAL IMAGE 0 2011
 
SHARP KABUSHIKI KAISHA (1)
6995738 Two-panel reflective liquid crystal display projection system and method of using the same 4 2001
 
PRODISC TECHNOLOGY INC. (1)
* 6705733 Color wheel and washer thereof 8 2003
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (4)
7050120 Display device with cooperative color filters 5 2002
* 2003/0142,241 Display device with cooperative color filters 1 2002
8384773 Method and system for displaying an image in three dimensions 0 2004
* 2005/0225,630 Method and system for displaying an image in three dimensions 34 2004
 
3M INNOVATIVE PROPERTIES COMPANY (5)
6273567 Compact multi-path LCD projector 37 1998
* 6709124 Scrolling color sequential illumination system 2 2002
7364302 Projection display system using multiple light sources and polarizing element for using with same 4 2004
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7445341 Four panel liquid crystal display system 1 2005
 
Simon Boothroyd (1)
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GLOBALFOUNDRIES INC. (1)
6650383 Band-shifted liquid crystal structure for projection of images without spectral distortion 0 2000
 
SAMSUNG DISPLAY CO., LTD. (3)
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* 2004/0184,005 Sequential projection color display using multiple imaging panels 4 2004
* 2007/0024,529 Device, system and method for electronic true color display 9 2006
 
THOMSON LICENSING (1)
* 2005/0046,759 Brighter light engine architecture for a liquid crystal display projection system 7 2004
 
OLYMPUS OPTICAL CO., LTD. (1)
* 2003/0137,610 Color reproducing system 8 2003
 
QISDA CORPORATION (1)
* 6705735 Projecting device for displaying computer image 3 1999
 
AIXIN TECHNOLOGIES, LLC (2)
* 7334900 Three-dimensional image projecting apparatus 1 2005
* 2006/0038,964 Three-dimensional image projecting apparatus 4 2005
 
DUKE UNIVERSITY (3)
* 6217174 Image projection 20 1999
6379011 Methods of projecting images 6 2001
6547399 Image engine having multiple image sources with different response times for color operation 6 2002
 
IMAX THEATRES INTERNATIONAL LIMITED (10)
6736514 Imaging apparatus for increased color gamut using dual spatial light modulators 8 2002
* 2003/0234,911 IMAGING APPARATUS FOR INCREASED COLOR GAMUT USING DUAL SPATIAL LIGHT MODULATORS 1 2002
6769772 Six color display apparatus having increased color gamut 55 2002
* 2004/0070,736 Six color display apparatus having increased color gamut 7 2002
6863402 Apparatus for displaying a color image from digital data 41 2004
6857748 Apparatus for displaying a color image from digital data 12 2004
* 2004/0207,821 Apparatus for displaying a color image from digital data 9 2004
* 2004/0207,820 Apparatus for displaying a color image from digital data 0 2004
* 7891816 Stereo projection using polarized solid state light sources 11 2008
* 2009/0213,330 STEREO PROJECTION USING POLARIZED SOLID STATE LIGHT SOURCES 15 2008
 
SUN INNOVATIONS, INC. (11)
7090355 System and method for a transparent color image display utilizing fluorescence conversion of nano particles and molecules 89 2004
7182467 Microstructures integrated into a transparent substrate which scatter incident light to display an image 45 2004
6986581 Light emitting material integrated into a substantially transparent substrate 82 2004
* 2005/0094,266 Microstructures integrated into a transparent substrate which scatter incident light to display an image 11 2004
7452082 Excitation light emission apparatus 8 2005
7213923 Emission of visible light in response to absorption of excitation light 158 2005
7537346 Display having integrated light emitting material 8 2006
* 2006/0197,922 Display 23 2006
7976169 Waveguide display 2 2007
* 2008/0002,159 WAVEGUIDE DISPLAY 19 2007
* 8152306 Waveguide display 1 2011
 
THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA (1)
7204592 Stereoscopic image projection system 49 2003
 
INTEL CORPORATION (2)
* 7314282 Color-split optical engine architecture for projection displays 2 2005
* 2006/0164,606 Color-split optical engine architecture for projection displays 4 2005
 
USHIODENKI KABUSHIKI KAISHA (2)
* 8668339 Light source device 4 2012
* 2012/0262,675 LIGHT SOURCE DEVICE 1 2012
 
VENTURE LENDING & LEASING IV, INC. (2)
* 7057674 Projection display with full color saturation and variable luminosity 0 2002
* 2002/0105,729 Projection display with full color saturation and variable luminosity 3 2002
 
SILICON QUEST KABUSHIKI-KAISHA (6)
* 8226246 Apparatus and method, both for controlling spatial light modulator 3 2008
8061846 Light source control method for video image display apparatus and video image display apparatus 0 2008
7954960 Video image display apparatus and timing control method 0 2008
* 2009/0141,189 Light source control method for video image display apparatus and video image display apparatus 3 2008
* 2009/0141,195 Apparatus and method, both for controlling spatial light modulator 2 2008
* 2009/0141,194 Apparatus and method, both for controlling spatial light modulator 1 2008
 
TEXAS INSTRUMENTS INCORPORATED (9)
* 7515746 Automated color matching for tiled projection system 4 2001
* 2002/0041,708 Automated color matching for tiled projection system 15 2001
7066605 Color recapture for display systems 7 2004
7252391 Method of producing an image 3 2006
* 7570410 High brightness display systems using multiple spatial light modulators 0 2006
* 2008/0158,516 HIGH BRIGHTNESS DISPLAY SYSTEMS USING MULTIPLE SPATIAL LIGHT MODULATORS 0 2006
* 2007/0268,465 Sequential Color Recapture for Projection Systems 2 2007
* 8253755 System and method for image-based color sequence reallocation 0 2007
* 2009/0066,718 System and Method for Image-based Color Sequence Reallocation 2 2007
 
REALD INC. (2)
* 8408708 Polarization modulation wheel 3 2010
* 2010/0296,059 Polarization modulation wheel 2 2010
 
ADVANCED PERIPHERALS TECHNOLOGIES, INC., A JAPANESE CORPORATION (1)
* 6457833 Digital micro mirror device and single-panel color projector using it 22 2000
 
SUPERIMAGING, INC. (1)
* 2006/0290,898 SYSTEM AND METHOD FOR A TRANSPARENT COLOR IMAGE DISPLAY UTILIZING FLUORESCENCE CONVERSION OF NANOPARTICLES AND MOLECULES 22 2006
 
PHILIPS ELECTRONICS NORTH AMERICA CORPORATION (1)
* 6280034 Efficient two-panel projection system employing complementary illumination 98 1999
 
KINOPTICS TECHNOLOGIES INC. (2)
7690796 Color projection display system 3 2004
* 2005/0174,543 Color projection display system 3 2004
* Cited By Examiner