Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Patent
1996-08-23
1999-01-05
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
349 98, 349115, 349194, 362 19, 362 26, 362 31, G02F 11335, G02F 113, F21V 914, G01D 1128
Patent
active
058568557
ABSTRACT:
An illumination system (3) comprises an optical waveguide (9) of an optically transparent material having an exit surface (19) and four end faces (13, 14, 15, 16). The light from a light source (11) is coupled into the optical waveguide (9) via at least one of the end faces (13). The illumination system, for an LCD, further has a reflective polarizer (21) in combination with a diffuser (23) for polarizing the light supplied by the light source (11). The reflective polarizer (21) is integrated with the optical waveguide and constitutes the surface (25) of the optical waveguide (9) which is located opposite the exit surface (19). The diffuser (23) is present on a surface of the polarizer (21) remote from the optical waveguide (9).
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Society for Information Display SID 1992 Exhibit Guide,. Venue: Hynes Convention Center, Boston, MA Period: May 17-22, 1992 One reference sheet "Illuminator".
1990 SID International Symposium Digest of Technical Papers, First Edition May, 1990 Publisher: Society for Information Display, 8055 West Manchester Aved., Playa del Rey, CA 90293.
Broer Dirk J.
De Witz Christianne R.M.
Mol Grietje N.
Fox John C.
Horney Kari M.
Sikes William L.
U.S. Philips Corporation
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