US Patent No: 6,361,172

Number of patents in Portfolio can not be more than 2000

Color projection system incorporating electro-optic light modulator and rotating light-transmissive element

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Abstract

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A color projection display system, comprising a rotatable color drum with transmissive segments on the surface of the drum, the segments composed of dichroic filters having different color transmission bands, a cylindrical lens mounted co-axially inside the drum, and means for focussing images of the boundaries between segments onto an electro-optical light modulator panel, whereby in operation the segment images are scrolled across the surface of the light modulator panel, synchronously with the application of color components of a display signal corresponding to the colors of the scrolling segment images, to produce a full color display image for projection to a viewing screen.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PHILIPS ELECTRONICS NORTH AMERICA CORPORATIONNEW YORK, NY236

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brennesholtz, Matthew Pleasantville, NY 1 11

Cited Art Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
* 5,863,125 High efficiency two-SLM projector employing total-internal-reflection prism 96 1998
 
Gold Star Co., Ltd. (1)
* 5,463,433 Image projector 17 1994
 
North American Philips Corporation (1)
5,532,763 Single panel color projection video display 53 1995
 
TEXAS INSTRUMENTS INCORPORATED (1)
* 5,777,694 Color wheel with plastic film filters 16 1995
 
PHILIPS ELECTRONICS NORTH AMERICA CORPORATION (1)
* 6,266,105 Color projection system incorporation electro-optic light modulator and rotating light-reflective element 36 1998
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (3)
* 2004/0160,655 Pulse width modulation sequence generation 0 2004
* 2005/0001,995 Color recapture for display systems 0 2004
* 2006/0215,285 Rod integrators for light recycling 1 2006
 
KONINKLIJKE PHILIPS ELECTRONICS N.V. (2)
* 2006/0203,209 Colour-sequential projection system comprising four primary colours 10 2003
* 2007/0053,190 Compact efficient light collection optics for scrolling color illumination 1 2004
 
SIM2 Multimedia S.p.A. (1)
* 2009/0268,102 PROJECTION APPARATUS PROVIDED WITH AN ADJUSTABLE FILTRATION SYSTEM AND METHOD THEREOF FOR ADJUSTING THE COLOUR COMPONENTS OF A LIGHT BEAM 7 2007
 
3M INNOVATIVE PROPERTIES COMPANY (1)
6,709,124 Scrolling color sequential illumination system 2 2002
 
SAMSUNG ELECTRONICS CO., LTD. (4)
7,048,381 Cylindrical lens array for scrolling colors, projection system using same, and scrolling method 3 2003
* 2004/0119,947 Cylindrical lens array for scrolling colors, projection system using same, and scrolling method 3 2003
* 7,011,414 Highly efficient projection system and color scrolling method therefor 0 2003
* 2004/0114,112 Highly efficient projection system and color scrolling method therefor 0 2003
 
TEXAS INSTRUMENTS INCORPORATED (12)
7,052,150 Rod integrator 13 2000
* 2001/0008,470 Rod integrators for light recycling 0 2000
* 2003/0020,839 Integrating filter 13 2002
6,967,759 Pulse width modulation sequence generation 4 2002
6,987,597 Pulse width modulation sequence generation 5 2004
6,898,019 Pulse width modulation sequence generation 2 2004
7,066,605 Color recapture for display systems 7 2004
7,118,226 Sequential color recapture for image display systems 5 2005
* 2005/0185,148 Sequential color recapture for image display systems 3 2005
7,184,213 Rod integrators for light recycling 2 2006
7,252,391 Method of producing an image 3 2006
* 2007/0268,465 Sequential Color Recapture for Projection Systems 2 2007
* Cited By Examiner