Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1993-10-21
1996-02-06
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359102, 359 70, G02F 113
Patent
active
054900034
ABSTRACT:
To obtain a monotonic transmission/voltage characteristic curve in a reflective display having a small twist angle, the polarizer in a cell with crossed polarizer and analyzer is arranged parallel to the dividing line of the directions of orientation (23, 24) determining the twist angle .alpha., the cell being optimized for .alpha. and d..DELTA.n.
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Sonehara et al., "A New Twisted Nematic Electrically Controlled Bisefringent (TN-ECB) Made for a Reflective Light Valve", Proceedings of the SID, vol. 31/2, 1990.
Parker Kenneth
Sikes William L.
Spain Norman N.
U.S. Philips Corporation
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