| CPC H04N 23/672 (2023.01) [G01S 17/10 (2013.01); G01S 17/894 (2020.01)] | 8 Claims |
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1. A camera module comprising:
a light output unit configured to output a first optical signal to illuminate an object;
a sensor configured to receive a second optical signal; and
a control unit configured to acquire distance information of the object using-based on a phase difference of the second optical signal,
wherein:
the sensor includes a non-extraction area in which the phase difference is not extracted and an extraction area in which the phase difference is extracted;
the control unit stops control of the non-extraction area,
the second optical signal is reflection of the first optical signal from the object,
the sensor synthesizes the second optical signal with a plurality of reference signals having different phases to generate a plurality of electrical signals,
in the non-extraction area, two or more of the plurality of electrical signals corresponding to the plurality of reference signals are not generated, and
in the non-extraction area, sums of electrical signals corresponding to the reference signals having a phase difference of 180° are different among the plurality of electrical signals.
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