Illuminating optical apparatus
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United States of America Patent
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Apr 28, 1998
Issued Date -
N/A
app pub date -
Mar 1, 1996
filing date -
Nov 24, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An illuminating optical apparatus comprises a light source providing a light beam; a rotationally symmetrical mirror having an aperture of a predetermined shape; a collimating optical system for converting the light beam, coming from the light source and condensed by the rotationally symmetrical mirror, into a substantially parallel light beam; a multiple light source forming device for forming plural secondary light sources by said substantially parallel light beam; and a condenser optical system for condensing the light beam from the multiple light source forming device, thereby uniformly illuminating an object of illumination. The collimating optical system is adapted to form an image of the reflecting surface of the rotationally symmetrical mirror on a predetermined plane of the multiple light source forming device.
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