Optical device for an optical element and apparatus employing the device
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United States of America Patent
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Jun 17, 2003
Grant Date -
May 16, 2002
app pub date -
Sep 28, 2001
filing date -
Sep 29, 2000
priority date (Note) -
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Abstract
An optical device for an optical element to control a light path about emission light emitted from the optical element to external or incident light entered from external to the optical element, which includes a light reflecting member, a resin member covering a light reflection surface of the light reflecting member, and a bumper member interposed between the light reflecting member and the resin member. The resin member is provided with a boundary surface for almost totally reflecting light deviated from a predetermined region in front of the optical element, and the boundary surface of the resin member or the light reflecting member is so disposed that light deviating from the predetermined region in front of the optical element and passing between the optical element and an external of the optical device is reflected more than once with each of the boundary surface and the light reflecting member.
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