US Patent No: 6,243,199
Number of patents in Portfolio can not be more than 2000
Broad band wire grid polarizing beam splitter for use in the visible wavelength region
Stats
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Jun 5, 2001
Issued date -
Sep 7, 1999
filing date -
09/390,833
serial no -
In Force
status
Importance
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Abstract
A wire grid polarizing beam splitter has a generally parallel arrangement of thin, elongated elements which interact with electromagnetic waves of a source light beam to generally transmit or pass light of one polarization, and reflect light of the other polarization. The arrangement of elements has a throughput greater than approximately 50%, and an extinction greater than approximately 100. In addition, the arrangement of elements has a period less than approximately 0.21 .mu.m, and a width to period ratio of between approximately 0.25 to 0.76. The elements have a thickness of between approximately 0.05 to 0.5 .mu.m.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,061,050 Polarizer | 48 | 1990 | |
| 5,225,920 Liquid crystal modulator including a diffuser with plural phase shifting regions | 42 | 1991 | |
| 5,357,370 Polarizer and light valve image projector having the polarizer | 43 | 1992 | |
| 5,579,138 Polarizer having a glass substrate with films on either side with different wavelength characteristics and projection display using same | 46 | 1994 | |
| 5,513,035 Infrared polarizer | 31 | 1994 | |
| 5,557,343 Optical system including a reflecting polarizer for a rear projection picture display apparatus | 54 | 1995 | |
| 5,570,215 Liquid crystal display apparatus and projection displaying apparatus having a rotatable phase difference plate and polarizer | 35 | 1995 | |
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| 4,466,704 Patterned polarizer having differently dyed areas | 33 | 1983 | |
| 4,895,769 Method for preparing light polarizer | 70 | 1988 | |
| 5,486,949 Birefringent interference polarizer | 247 | 1990 | |
| 5,612,820 Birefringent interference polarizer | 221 | 1995 | |
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| 5,422,756 Backlighting system using a retroreflecting polarizer | 211 | 1992 | |
| 5,325,218 Cholesteric polarizer for liquid crystal display and overhead projector | 143 | 1992 | |
| 5,333,072 Reflective liquid crystal display overhead projection system using a reflective linear polarizer and a fresnel lens | 82 | 1992 | |
| 5,559,634 Retroreflecting polarizer | 90 | 1994 | |
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| 4,759,612 Twisted nematic type liquid crystal display device having a color polarizer to provide an achromatic or colorless background | 62 | 1986 | |
| 5,235,449 Polarizer with patterned diacetylene layer, method for producing the same, and liquid crystal display device including such polarizer | 45 | 1991 | |
| 5,157,526 Unabsorbing type polarizer, method for manufacturing the same, polarized light source using the same, and apparatus for liquid crystal display using the same | 93 | 1991 | |
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| 5,490,003 Reflective liquid crystal display device with twist angle between 50.degree. and 68.degree. and the polarizer at the bisectrix | 51 | 1993 | |
| 5,506,704 Cholesteric polarizer and the manufacture thereof | 135 | 1994 | |
| 5,626,408 Illumination system for a color projection device and circular polarizer suitable for use in such an illumination system, and color image projection device comprising such an illumination system and circular polarizer | 60 | 1994 | |
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| 4,221,464 Hybrid Brewster's angle wire grid infrared polarizer | 46 | 1978 | |
| 5,383,053 Virtual image display having a high efficiency grid beamsplitter | 80 | 1992 | |
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| 4,991,937 Birefringence diffraction grating type polarizer | 43 | 1989 | |
| 5,029,988 Birefringence diffraction grating type polarizer | 37 | 1989 | |
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| 5,235,443 Polarizer device | 201 | 1992 | |
| 5,295,009 Polarizer device | 76 | 1993 | |
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| 4,743,092 Polarizing grids for far-infrared and method for making same | 33 | 1986 | |
| 4,946,231 Polarizer produced via photographic image of polarizing grid | 33 | 1989 | |
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| 4,688,897 Liquid crystal device | 56 | 1985 | |
| 5,239,322 Display apparatus | 55 | 1991 | |
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| 4,966,438 Dielectric layer polarizer | 50 | 1989 | |
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| 4,711,530 Liquid crystal device having birefringent plate next to polarizer | 46 | 1986 | |
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| 5,748,369 Polarizing beam splitter and an illuminating device provided with the same | 58 | 1995 | |
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| 5,508,830 Liquid crystal display unit having an enclosed space between the liquid crystal cell and at least one polarizer | 37 | 1994 | |
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| 5,517,356 Glass polarizer for visible light | 46 | 1994 | |
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| 5,113,285 Full color three-dimensional flat panel display | 118 | 1990 | |
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| 4,289,381 High selectivity thin film polarizer | 64 | 1979 | |
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| 4,181,756 Process for increasing display brightness of liquid crystal displays by bleaching polarizers using screen-printing techniques | 31 | 1977 | |
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| 5,305,143 Inorganic thin film polarizer | 55 | 1991 | |
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| 5,486,935 High efficiency chiral nematic liquid crystal rear polarizer for liquid crystal displays having a notch polarization bandwidth of 100 nm to 250 nm | 169 | 1993 | |
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| 5,833,360 High efficiency lamp apparatus for producing a beam of polarized light | 49 | 1996 | |
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| 5,177,635 Polarizer for infrared radiation | 46 | 1990 | |
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| 4,818,076 Color-selective circular polarizer and its use | 35 | 1987 | |
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| 6,081,376 Reflective optical polarizer device with controlled light distribution and liquid crystal display incorporating the same | 37 | 1998 | |
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| 4,268,127 Light transmitting and reflecting polarizer | 125 | 1979 | |
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| 4,913,529 Illumination system for an LCD display system | 66 | 1988 | |
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| 5,513,023 Polarizing beamsplitter for reflective light valve displays having opposing readout beams onto two opposing surfaces of the polarizer | 52 | 1994 | |
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| 5,594,561 Flat panel display with elliptical diffuser and fiber optic plate | 58 | 1993 | |
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| 5,122,907 Light polarizer and method of manufacture | 44 | 1991 | |
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| 5,574,580 LCD with integral light confinement having a pair of afocal lenslets positioned between liquid crystal cells and color polarizers | 47 | 1995 | |
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| 5,436,761 Projection exposure apparatus and polarizer | 60 | 1994 | |
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| 4,512,638 Wire grid polarizer | 50 | 1982 | |
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| 4,220,705 Process for manufacturing a multi-colored display polarizer | 35 | 1978 | |
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| 5,122,887 Color display utilizing twisted nematic LCDs and selective polarizers | 67 | 1991 | |
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| 5,139,340 Single polarizer, reflective type liquid crystal display device with high brightness and contrast ratio | 69 | 1990 | |
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| 4,799,776 Ferroelectric liquid crystal display device having a single polarizer | 33 | 1987 | |
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| 4,759,611 Liquid crystal display having silylated light polarizers | 35 | 1986 | |
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| 5,619,356 Reflective liquid crystal display device having a compensator with a retardation value between 0.15 .mu.m and 0.38 .mu.m and a single polarizer | 56 | 1994 | |
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| 4,456,515 Method for making polarizers comprising a multiplicity of parallel electrically conductive strips on a glass carrier | 41 | 1979 | |
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| 5,748,368 Polarization optical element | 46 | 1995 | |
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| 4,865,670 Method of making a high quality polarizer | 32 | 1988 | |
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| 5,245,471 Polarizers, polarizer-equipped optical elements, and method of manufacturing the same | 60 | 1992 | |
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| 4,514,479 Method of making near infrared polarizers | 48 | 1980 | |
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| 5,087,985 Polarizer for visible light | 34 | 1990 | |
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| 4,515,441 Dielectric polarizer for high average and high peak power operation | 46 | 1982 | |