CPC G01S 7/486 (2013.01) [G01S 7/4816 (2013.01); G01S 7/4865 (2013.01); G01S 17/14 (2020.01); G01S 17/89 (2013.01); G01S 17/93 (2013.01); G01S 17/931 (2020.01); G02B 3/00 (2013.01); G02B 3/02 (2013.01); G02B 7/02 (2013.01); G02B 7/105 (2013.01); G02B 13/0025 (2013.01); G02B 13/16 (2013.01); G02B 27/30 (2013.01)] | 19 Claims |
1. An optical device, comprising:
a light receiving element for detecting light reflected and transmitted from a subject;
a voltage part for providing a first bias voltage or a second bias voltage to the light receiving element; and
a controller for controlling the voltage part so that the second bias voltage provided from the voltage part is synchronized with a light output of a light emitting part to be provided to the light receiving element,
wherein the second bias voltage comprises a voltage in which a sub bias voltage is added to the first bias voltage.
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