US Patent No: 5,982,541

Number of patents in Portfolio can not be more than 2000

High efficiency projection displays having thin film polarizing beam-splitters

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Abstract

A projection display system includes a thin film polarizing beam splitter/combiner has first and second light transmissive substrates in the form of prisms and a plurality of thin film layers disposed between the prisms. The thin film layers and have predetermined thicknesses and refractive indices which allow unpolarized incident light to be separated into s-polarized and p-polarized light beams. Both frustrated total internal reflection and thin film interference are simultaneously employed to allow s-polarized light to be transmitted and p-polarized light to be reflected over a wide range of wavelengths and angles of incidence. The device further includes two spatial light modulators for encoding an image to be projected. By providing a different signal to each spatial light modulator, a three-dimensional display results.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
NATIONAL RESEARCH COUNCIL OF CANADAOTTAWA ONTARIO864

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dobrowolski, Jerzy A Ottawa, CA 14 675
Li, Li Meridian, ID 847 3996
Sullivan, Brian Thomas Gloucester, CA 1 52

Cited Art Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
5,517,340 High performance projection display with two light valves 92 1995
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
5,453,859 Polarization beam splitter and projection display apparatus 82 1994
 
Thomson-CSF (1)
5,181,054 Device for the projection of images using two orthogonal components of light polarization 30 1991

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
SAMSUNG DISPLAY CO., LTD. (16)
6,870,523 Device, system and method for electronic true color display 70 2000
7,113,152 Device, system and method for electronic true color display 14 2001
7,352,488 Spectrally matched print proofer 12 2001
7,268,757 Device, system and method for color display 39 2002
6,962,414 Sequential projection color display using multiple imaging panels 15 2002
7,999,823 Device and method for projection device based soft proofing 0 2003
7,471,822 Method and apparatus for high brightness wide color gamut display 7 2003
8,228,275 Optimal subpixel arrangement for displays with more than three primary colors 2 2004
7,714,824 Multi-primary display with spectrally adapted back-illumination 3 2004
7,417,799 Multi-primary color display 5 2004
7,077,524 Sequential projection color display using multiple imaging panels 8 2005
7,990,403 Device, system and method for color display 2 2007
7,995,019 Device, system and method for color display 1 2007
8,310,498 Spectrally matched print proofer 0 2008
8,289,266 Method, device and system for multi-color sequential LCD panel 2 2008
7,916,939 High brightness wide gamut display 0 2009
 
MOXTEK, INC. (6)
7,800,823 Polarization device to polarize and further control light 4 2006
7,630,133 Inorganic, dielectric, grid polarizer and non-zero order diffraction grating 10 2007
7,961,393 Selectively absorptive wire-grid polarizer 1 2007
7,813,039 Multilayer wire-grid polarizer with off-set wire-grid and dielectric grid 4 2009
8,248,696 Nano fractal diffuser 0 2009
8,027,087 Multilayer wire-grid polarizer with off-set wire-grid and dielectric grid 4 2010
 
DUKE UNIVERSITY (3)
6,217,174 Image projection 19 1999
6,379,011 Methods of projecting images 5 2001
6,547,399 Image engine having multiple image sources with different response times for color operation 6 2002
 
3M INNOVATIVE PROPERTIES COMPANY (2)
7,237,899 Highly efficient single panel and two panel projection engines 7 2003
7,568,804 Highly efficient single panel and two panel projection engines 1 2007
 
CANON KABUSHIKI KAISHA (2)
6,991,334 Polarization beam splitting optical system 2 2004
7,008,059 Color combining optical system and image projection apparatus 3 2004
 
GENOA COLOR TECHNOLOGIES LTD. (2)
8,248,440 Device, system and method for color display 1 2011
8,558,857 Device, system and method for color display 0 2012
 
LIGHT PRESCRIPTIONS INNOVATORS, LLC (2)
6,639,733 High efficiency non-imaging optics 71 2001
6,646,813 Optical transformer for small light sources 24 2001
 
NATIONAL RESEARCH COUNCIL OF CANADA (2)
6,487,014 High isolation optical switch, isolator or circulator having thin film polarizing beam-splitters 6 1999
6,317,264 Thin film polarizing device having metal-dielectric films 4 1999
 
Boothroyd, Simon (1)
8,388,138 Projection display systems 0 2008
 
Boothroyd, Simon Andrew (1)
7,690,794 Image-combining device and projection display apparatus having image-combining devices incorporated therein 1 2007
 
CFPH, LLC (1)
8,483,756 Optical systems and elements with projection stabilization and interactivity 0 2009
 
EASTMAN KODAK COMPANY (1)
8,220,931 Etendue reduced stereo projection using segmented disk 0 2009
 
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE (1)
8,422,112 Display system 0 2008
 
INTEL CORPORATION (1)
6,672,722 Projection engine 18 2001
 
JDS UNIPHASE CORPORATION (1)
6,886,943 High-resolution projection display system 6 2003
 
MURATA MANUFACTURING CO., LTD. (1)
7,355,560 Dielectric lens, dielectric lens device, design method of dielectric lens, manufacturing method and transceiving equipment of dielectric lens 1 2006
 
OERLIKON TRADING AG, TRUEBBACH (1)
6,288,844 Light splitter and optical transmitter configuration with a light splitter 15 1999
 
SEIKO EPSON CORPORATION (1)
7,036,942 Optical filter, optical device, and projector 1 2003
 
SHANGHAI LEXVU OPTO MICROELECTRONICS TECHNOLOGY CO., LTD. (1)
8,134,109 Optical projection engine device having a polarizing beam splitter and a control providing modulation instructions to modulation imagers 0 2009
 
SHARP KABUSHIKI KAISHA (1)
6,183,090 Projection type image display apparatus 38 1998
 
Simon Boothroyd (1)
7,926,949 Dual-mode three-dimensional projection display 1 2007
 
TRANSPACIFIC IP II LTD. (1)
6,203,160 High efficiency liquid crystal display projection system 10 1999
 
Other [Check patent profile for assignment information] (3)
7,403,320 2-channel display system comprising micro electro mechanical systems 1 2004
8,587,621 Sub-pixel rendering of a multiprimary image 0 2006
8,085,462 Superposition method using a pair of stereo-isomeric micro electro mechanical systems (MEMSs) 0 2010