Illuminating optical device

Details Illuminating optical device Illuminating optical device

1989-10-27

1991-03-05

Husar, Stephen F.

Illumination

Light modifier

Refractor

362268, F21V 500

Patent

active

049981919

ABSTRACT:
An illuminating optical device of the type in which light from a light source is made incident on a condenser lens through a fly-eye lens a light transmitting object to be illuminated is disposed between the condenser lens and a projection optical system. The degree of surface finish of the emergence surface of the fly-eye lens is made lower than that of the incident surface.

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