Lidar device using time delayed local oscillator light and operating method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsDongjae SHIN, Hyunil BYUN, Jinmyoung KIM, Changgyun SHIN
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Abstract
A light detection and ranging (LiDAR) device includes a transmitter configured to transmit a continuous wave light to an object and provide a local oscillator (LO) light corresponding to the transmitted continuous wave light; a delay circuit configured to time delay the LO light; a receiver configured to receive the continuous wave light reflected from an object; and a detection circuit configured to determine a distance from the LiDAR device to the object based on the time delayed LO light and the received continuous wave light.
Claims23
A light detection and ranging (LiDAR) device comprising:
- a transmitter configured to transmit a continuous wave light to an object, and provide a local oscillator (LO) light corresponding to the transmitted continuous wave light;
- a delay circuit configured to time delay the LO light;
- a receiver configured to receive the continuous wave light reflected from an object;
- and
- a detection circuit configured to determine a distance from the LiDAR device to the object based on the time delayed LO light and the received continuous wave light.
An operating method of a light detection and ranging (LiDAR) device, the operating method comprising:
- transmitting a continuous wave light to an object and providing a local oscillator (LO) light corresponding to the transmitted continuous wave light;
- time delaying the LO light;
- receiving the continuous wave light reflected from the object;
- and
- determining a distance from the LiDAR device to the object based on the time delayed LO light and the received continuous wave light.
A light detection and ranging (LiDAR) device comprising:
- a light source;
- a frequency modulator configured to control the light source to produce a non-linear continuous wave light;
- a beam splitter configured to split the non-linear continuous wave light into a transmission light and a local oscillator (LO) light;
- an optical delay circuit configured to time delay the LO light by stepwise increasing a delay time of the LO light;
- one or more antennas configured to emit the transmission light to an object and receive a reflected light from the object when the transmission light is reflected from the object;
- and
- a detection circuit configured to determine a distance from the LiDAR device to the object based on the time delayed LO light and the reflected light.
Dependencies are inferred from the claim text.