Adaptive laser power and ranging limit for time of flight sensor

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United States of America Patent

PATENT NO 10823826
APP PUB NO 20170356981A1
SERIAL NO

15605611

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Abstract

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A time of flight range detection device includes a laser configured to transmit an optical pulse into an image scene, a return single-photon avalanche diode (SPAD) array, a reference SPAD array, a range detection circuit coupled to the return SPAD array and the reference SPAD array, and a laser driver circuit. The range detection circuit in operation determines a distance to an object based on signals from the return SPAD array and the reference SPAD array. The laser driver circuit in operation varies an output power level of the laser in response to the determined distance to the object.

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Patent Owner(s)

  • STMICROELECTRONICS INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Deleule, Arnaud Cupertino, US 9 46
Xiao, Rui Cupertino, US 33 78
Yang, Xiaoyong San Jose, US 29 214

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