Hologram element, illumination device, projector, and method...

Details Hologram element, illumination device, projector, and method... Hologram element, illumination device, projector, and method...

2011-05-31

2011-05-31

Dowling, William C (Department: 2878)

Optics: image projectors

Plural

C353S031000, C359S010000, C359S015000

Reexamination Certificate

active

07950809

ABSTRACT:
A hologram element that forms a predetermined illumination pattern on an irradiated surface by diffracting incident light is disclosed. The illumination pattern is formed by making light in a first wavelength region diffracted in a first region, and the illumination pattern is formed by making light in a second wavelength region different from the first wavelength region diffracted in a second region on the same plane as the first region.

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