Liquid crystal device having a diffraction function layer...

Details Liquid crystal device having a diffraction function layer... Liquid crystal device having a diffraction function layer...

2011-05-17

2011-05-17

Robinson, Mark A (Department: 2883)

Liquid crystal cells, elements and systems

Liquid crystal optical element

Liquid crystal diffraction element

C359S563000

Reexamination Certificate

active

07944544

ABSTRACT:
An optical element includes a diffraction function layer for diffracting at least a part of incident light and a grid disposed on a first surface of the diffraction function layer and including a plurality of wires. The first surface includes a plurality of first areas and a plurality of second areas. The first areas and the second areas are different from each other in a height from a second surface of the diffraction function layer as a surface opposite to the first surface. Steps are provided on boundaries between the first areas and the second areas.

REFERENCES:
patent: 5148302 (1992-09-01), Nagano et al.
patent: 7114820 (2006-10-01), Parikka et al.
patent: 2005/0141090 (2005-06-01), Huang et al.
patent: 2007/0242187 (2007-10-01), Yamaki et al.
patent: A 2002-520677 (2002-07-01), None
patent: A 2006-133275 (2006-05-01), None
patent: WO 00/04418 (2000-01-01), None

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