Liquid crystal cells – elements and systems – Liquid crystal system – Variable or rotatable retarder used with other retarders to...
Patent
1997-05-08
1999-09-14
Sikes, William L.
Liquid crystal cells, elements and systems
Liquid crystal system
Variable or rotatable retarder used with other retarders to...
349 97, 359499, G02F 113
Patent
active
059530839
ABSTRACT:
This invention provides a complementary color polarizer using a single polarizing film followed by a stack of two or more retarders. In a preferred embodiment, the color polarizers of this invention produce orthogonally polarized complementary primary colors (red/cyan, green/magenta, or blue/yellow). This invention further provides color filters which utilize the color polarizers of this invention in combination with a polarization separator to separate the orthogonally polarized colors. The polarization separator can be passive, such as a polarizing beam splitter, or active, such as a switchable polarizer. The switchable polarizer can employ a nematic or a smectic liquid crystal cell. Two color filters of this invention can be cascaded to provide a three color (RGB) filter with an off-state. In combination with a monochrome display or camera, the color filters of this invention provide color displays or cameras.
REFERENCES:
patent: 2493200 (1950-01-01), Land
patent: 2638816 (1953-05-01), Stolzer
patent: 4003081 (1977-01-01), Hilsum et al.
patent: 4019808 (1977-04-01), Scheffer
patent: 4025164 (1977-05-01), Doriguzzi et al.
patent: 4232948 (1980-11-01), Shanks
patent: 4367924 (1983-01-01), Clark et al.
patent: 4416514 (1983-11-01), Plummer
patent: 4448823 (1984-05-01), Clifford
patent: 4497543 (1985-02-01), Aoki et al.
patent: 4575193 (1986-03-01), Greivenkamp, Jr.
patent: 4582396 (1986-04-01), Bos et al.
patent: 4635051 (1987-01-01), Bos et al.
patent: 4652087 (1987-03-01), Bos et al.
patent: 4758818 (1988-07-01), Vatne
patent: 4759612 (1988-07-01), Nakatsuka et al.
patent: 4770500 (1988-09-01), Kalmanash et al.
patent: 4770525 (1988-09-01), Umeda et al.
patent: 4796978 (1989-01-01), Tanaka et al.
patent: 4834508 (1989-05-01), Fergason
patent: 4867536 (1989-09-01), Pidsosny et al.
patent: 4917464 (1990-04-01), Conner
patent: 4917465 (1990-04-01), Conner et al.
patent: 4966441 (1990-10-01), Conner
patent: 5032007 (1991-07-01), Silverstein et al.
patent: 5033825 (1991-07-01), Ishikawa et al.
patent: 5050965 (1991-09-01), Conner et al.
patent: 5122887 (1992-06-01), Mathewson
patent: 5126864 (1992-06-01), Akiyama et al.
patent: 5179459 (1993-01-01), Plesinger
patent: 5237435 (1993-08-01), Kurematsu et al.
patent: 5243455 (1993-09-01), Johnson et al.
patent: 5268782 (1993-12-01), Wenz et al.
patent: 5299039 (1994-03-01), Bohannon
patent: 5347378 (1994-09-01), Handschy et al.
patent: 5422756 (1995-06-01), Weber
patent: 5469279 (1995-11-01), Sharp et al.
patent: 5528393 (1996-06-01), Sharp et al.
patent: 5559634 (1996-09-01), Weber
patent: 5574580 (1996-11-01), Ansley
patent: 5585950 (1996-12-01), Nishino et al.
patent: 5608551 (1997-03-01), Biles et al.
patent: 5658490 (1997-08-01), Sharp et al.
patent: 5686931 (1997-11-01), Funfschilling et al.
patent: 5689317 (1997-11-01), Miller
patent: 5751384 (1998-05-01), Sharp
Scheffer, T.J., "New multicolor liquid crystal displays that use a twisted nematic electro-optical cell," J., Appl. Phys. (1973) 44(11):4799-4803.
Carlsen, W.J. and Buhrer, C.F., "Flat Passband Birefringent Wavelength-Division Multiplexers," Electronics Letters (1987) 23(3):106-107.
Wright, H., et al., "Active filters enable color imaging," Laser Focus World (May 1996) 85-90.
Cambridge Research & Instrumentation, Inc., Liquid Crystal Tunable Filter, Cambridge, MA, 2 pages.
Displaytech, Inc. (Jan., 1996), "Switchable Color Filter", Boulder, CO, 4 pages.
Title, A.M. and Rosenberg, W.J., "Tunable birefringent filters," Opt. Eng., (1981) 20(6):815-823.
Solc, Ivan, "Birefringent Chain Filters," J. Opt. Soc. Am. (1965) 55(6):621-625.
Wu, Shin-Tson, "Birefringence dispersions of liquid crystals," Physical Review A, (1986) 33(2):1270-1274.
Harris, S.E., et al., "Optical Network Synthesis Using Birefingent Crystals, I. Synthesis of Lossless Networks of Equal-Length Crystals," J. Opt. Soc. America (1964) 54(10):1267-1279.
Amman, E.O., "Optical Network Synthesis Using Birefringent Crystals, III., Some General Properties of Lossless Birefringent Networks," J. Opt. Soc. America (1966) 56(7):943-951.
Amman, E.O. and Yarborough, J.M., "Optical Network Synthesis Using Birefringent Crystals V. Synthesis of Lossless Networks Containing Equal-Length Crystals and Compensators," J. Opt. Soc. America (1966) 56(12):1746-1754.
Sharp, G.D., et al., "P-60: Color Switching Using Ferroelectric Liquid Crystals," Society for Information Display, International Symposium, Digest of Technical Papers, vol. XXIV, Seattle, Washington, May 18-20, 1993.
Kondo, et.al., "Ferroelectric Liquid Crystal Materials Applied to Guest-Host Type Displays," Ferroelectrics (1988) 85:361-373.
Billings, BH., "A Tunable Narrow-Band Optical Filter," J. Opt. Soc. America (1947) 37:738-746.
P.J. Shannon, et al., "Patterned optical properties in photopolymerized surface-aligned liquid-crystal films", Nature, vol. 368, Apr. 1994, pp. 532 & 533.
Schadt, et al, "Photo-Generation of Linearly Polymerized Liquid Crystal Aligning Layers Comprising Novel, Integrated Optically Patterned Retarders and Color Filters", Jpn, J. Appl. Phys. vol. 34 (1995) pp. 3240-3249 Part 1, No. GA, Jun. 1995.
Pochi Yeh, "Optical Waves in Layered Media", pp. 1-35.
J.L. Pezzaniti, et al. "Phase-only modulation of a twisted nematic liquid-crystal TV by use of the eigenpolarization states" Optics Letters, Sep. 15, 1993, vol. 18, No. 18.
ColorLink, Inc.
Parker Kenneth
Sikes William L.
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