Illumination optical system, illumination apparatus using...

Details Illumination optical system, illumination apparatus using... Illumination optical system, illumination apparatus using...

2008-01-29

2008-01-29

Schwartz, Jordan M. (Department: 2873)

Optical: systems and elements

Lens

Diffusing

C362S558000

Reexamination Certificate

active

11181816

ABSTRACT:
An illumination optical system disposed in order to diffuse illumination light emitted from a light source, includes at least one optical device having a roughened optical surface, with the arithmetic average roughness of the roughened surface set in a range of 0.05 to 0.75 [μm].

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patent: 2001-292956 (2001-10-01), None

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