Distance detector device
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United States of America Patent
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Mar 13, 1984
Grant Date -
N/A
app pub date -
Sep 4, 1981
filing date -
Sep 8, 1980
priority date (Note) -
Expired
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Abstract
Light projected from active lighting means or light projecting means toward an object is reflected by said object and a light spot is produced on a light sensitive element by the reflected light. A distance to said object is determined by sensing a position of said light spot. When a shade detector scanning the surface of the light sensitive element shields the light spot generated by the light reflected from the object, a photoelectric output from said light sensitive element is varied. Correspondence between the position of said shade detector when said photoelectric output is varied and a distance to said object enables a measurement of the distance to said object.
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