Installation for increasing usable range along axial direction of light source
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United States of America Patent
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Nov 4, 2003
Grant Date -
N/A
app pub date -
May 2, 2000
filing date -
Dec 18, 1999
priority date (Note) -
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Abstract
An installation for increasing the usable range along the axial direction of a light source. The installation has a light source and an optical sensor. The light source generates a sense image. The optical sensor further has a sensor and a transparent panel. The sensor is responsible for detecting the image generated by the light source so that a sense image is created. The transparent panel is positioned between the sensor and the light source. A coating on the transparent panel modifies the light transparency along the axial direction of the light source such that light transparency is lower in the middle compared with the ends.
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