Optical distance measuring apparatus
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United States of America Patent
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Jul 4, 2017
Grant Date -
Oct 9, 2014
app pub date -
Apr 2, 2014
filing date -
Apr 5, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
An optical distance measuring apparatus including a light source, a variable mirror scanning the light on an object, a receiving device receiving light from the object, a detected signal amplifying unit detecting a light receiving signal obtained by the receiving device, an amplification control unit detecting a set target value of light sensitivity of the receiving device or sets the light sensitivity based on a light quantity of reflected light, and a distance calculation unit detecting a flight time of the ranging light from a light emitting signal and calculating a distance up to the object, wherein in a first scan period, the amplification control unit detects the set target value based on a light quantity of the reflected light, and in a second scan period, the amplification control unit sets sensitivity of the receiving device to the set target value and the distance calculation unit calculates the distance.
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