04769750 is referenced by 69 patents and cites 10 patents.

An illumination optical system comprises a multi-beam generator which includes a plurality of each of two kinds of lens elements different in optical characteristics and which is interposed between a source for generating a collimated light beam and a light condenser. The multi-beam generator generates a large number of secondary light sources from the collimated light beam. The illumination optical system is capable of supplying illuminating light rays having an extremely uniform illumination distribution.

Title
Illumination optical system
Application Number
6/918131
Publication Number
4769750
Application Date
October 14, 1986
Publication Date
September 6, 1988
Inventor
Tetsuo Kikuchi
Tokyo
JP
Makoto Uehara
Tokyo
JP
Koichi Matsumoto
Tokyo
JP
Agent
Shapiro and Shapiro
Assignee
Nippon Kogaku
JP
IPC
G03B 21/14
F21V 7/04
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