LASER DISTANCE MEASURING DEVICE
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United States of America Patent
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Issued Date -
Dec 5, 2013
app pub date -
May 24, 2013
filing date -
Jun 4, 2012
priority date (Note) -
Abandoned
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Abstract
A laser distance measuring device includes a laser module, a receiving lens, and a photoelectric conversion device. The receiving lens includes a first curved surface and a second curved surface having a curvature different from that of the first curved surface. The second curved surface is used to converge part of reflected beams passing through the receiving lens onto a focal plane so as to form a continuous optical band and the continuous optical band gathers on the light receiving surface of the photoelectric conversion device.
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