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US 12,372,626 B2Granted
Light-receiving device and LiDAR
AssigneeLG Innotek Co., Ltd.
InventorsChang Hyuck Lee, Lee Im Kang, Ji Sung Kim, Yang Hyun Joo
Life of this patent
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Abstract
An optical device includes 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.
Claims20
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 controller inputs a seed signal to the light emitting part and the voltage part simultaneously, and
- wherein the voltage part outputs the second bias voltage based on a time when the seed signal is inputted.
3 more elements
A Lidar module comprising:
- a light receiving element for detecting light reflected and transmitted from a subject;
- a first voltage part for providing a bias voltage to the light receiving element;
- a second voltage part for providing a sub bias voltage to the light receiving element;
- and
- a controller for controlling the second voltage part so that the sub bias voltage is synchronized with a light output of a light emitting part to be provided to the light receiving element,
- wherein the controller inputs a seed signal to the light emitting part and the voltage part simultaneously, and
- wherein the voltage part outputs the second bias voltage based on a time when the seed signal is inputted.
4 more elements
A Lidar module comprising:
- a light receiving element for detecting light reflected and transmitted from a subject;
- a first voltage part for providing a bias voltage to the light receiving element;
- a second voltage part for providing a sub bias voltage to the light receiving element;
- and
- a monitoring photo diode(MPD) for detecting a light output outputted from a light emitting part and controlling the second voltage part so that the sub bias voltage is synchronized with the light output to be provided to the light receiving element,
- wherein the monitoring photo diode inputs a seed signal to the light emitting part and the voltage part simultaneously, and
- wherein the voltage part outputs the second bias voltage based on a time when the seed signal is inputted.
4 more elements
Dependencies are inferred from the claim text.