Rectangular based convex microlenses surrounded within a frame a

Details Rectangular based convex microlenses surrounded within a frame a Rectangular based convex microlenses surrounded within a frame a

1994-02-15

1996-12-03

Gross, Anita Pellman

Liquid crystal cells, elements and systems

Liquid crystal system

Projector including liquid crystal cell

349 57, 349 95, G02F 11335, G03B 2160, G02B 2710

Patent

active

055813798

ABSTRACT:
A microlens array including a plurality of spaced apart individual microlens in a plane defining a plurality of spaced apart apertures through the plane. The use of non-circular apertures in a preferred embodiment greatly increases the effective lens ration. This microlens array provides a dust-resistant optical element, and reduces the probability of flat spots resulting from an AR coating and problem associated with the edge effect resulting from electrolytic plating.

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patent: 4929569 (1990-05-01), Yaniv et al.
patent: 5151801 (1992-09-01), Hiroshima
patent: 5239412 (1993-08-01), Naka et al.
patent: 5298366 (1994-03-01), Iwasaki et al.
patent: 5300263 (1994-04-01), Hoopman et al.
patent: 5359440 (1994-10-01), Hamada et al.

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