Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1993-11-10
1995-03-14
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 40, 359 42, 359 48, 359 49, G02F 11335
Patent
active
053981251
ABSTRACT:
A liquid crystal projection panel for use in a projection system. The projection panel is comprised of a large number of pixels of liquid crystal defining a image forming plane provided between two transparent substrates. Microlens arrays are provided on both sides of the projection panel. The microlenses in both arrays have focal lengths such that parallel light rays entering the microlenses at an angle perpendicular to the arrays are focused at points beyond the image forming plane of the display.
REFERENCES:
patent: 5056912 (1991-10-01), Hamada et al.
patent: 5101279 (1992-03-01), Kurematsu et al.
patent: 5126863 (1992-06-01), Otsuka et al.
patent: 5315330 (1994-05-01), Hamada
patent: 5502783 (1991-10-01), Hamada
Aastuen David J. W.
Willett Stephen J.
Griswold Gary L.
Kirn Walter N.
Levinson Eric D.
Minnesota Mining and Manufacturing Company
Parker Kenneth
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