05418583 is referenced by 79 patents and cites 13 patents.

An optical illumination system includes a radiation source, a condensor, a first lens array including a plurality of first lenses, and a second lens array including a plurality of second lenses. The first lens array converges partial luminous fluxes, the number of which is the same as the number of first lenses, onto the second lenses paired with the first lenses. The second lens array transmits each of the partial luminous fluxes to an object region to be illuminated in such a manner that the partial luminous fluxes are superimposed on each other at the object region. Configurations of the apertures of the second lenses are different from each other and the second lenses are arranged in close contact with each other with the effective region of the second lens array approximating the smallest possible circle.

Title
Optical illumination system and projection display apparatus using the same
Application Number
8/39770
Publication Number
5418583
Application Date
March 30, 1993
Publication Date
May 23, 1995
Inventor
Yoshihiro Masumoto
Kobe
JP
Agent
Wenderoth Lind & Ponack
Assignee
Matsushita Electric Industrial
JP
IPC
G03B 21/14
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