Optical element having a diffractive layer and a relief...

Details Optical element having a diffractive layer and a relief... Optical element having a diffractive layer and a relief...

2011-07-05

2011-07-05

Epps, Georgia Y (Department: 2878)

Optics: image projectors

Reflector

C353S020000, C349S201000, C359S576000, C385S011000, C385S037000

Reexamination Certificate

active

07972017

ABSTRACT:
An optical element, includes: a diffractive functional layer which diffracts at least part of incident light; and a grid formed on a first surface of the diffractive functional layer, the grid including a plurality of fine wires and having a polarization separation function; wherein the optical element reflects a part of the incident light while transmitting another part of the incident light, the first surface of the diffractive functional layer including: a plurality of first regions; a plurality of second regions, a height thereof relative to a second surface of the diffractive functional layer being different from that of the first regions, the second surface being an opposite surface to the first surface; and a step provided at a border between the first regions and the second regions.

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