Wave receiving apparatus and distance measuring apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Aug 24, 2006
app pub date -
Feb 14, 2006
filing date -
Feb 21, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A wave receiving apparatus includes a light receiving element and a lens for condensing a reflected light toward the light receiving element. The lens has at least three portions that are different from one another in focal length. The lens has at least three portions that are different in focal length, and can input a stable amount of light to the light receiving element in a wide range.
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