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US 2021/0333370 A1Published application
Light emission method, device, and scanning system
AssigneeSz Dji Technology Co., Ltd.
InventorsYue YAN, Shuai DONG, Chenghui LONG
Life of this patent
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Abstract
The present disclosure provides a light emission method. The method includes emitting a light pulse sequence; changing a propagation direction of the light pulse sequence to scan a surrounding environment; and controlling an emission frequency and/or emission power of the light pulse sequence based on a scanning speed of the light pulse sequence.
Claims20
A light emission method, comprising:
- emitting a light pulse sequence;
- changing a propagation direction of the light pulse sequence to scan a surrounding environment;
- and
- controlling an emission frequency and/or emission power of the light pulse sequence based on a scanning speed of the light pulse sequence.
1 more element
A light emission device comprising:
- a light pulse generating unit configured to emit a light pulse sequence;
- one or more optical elements configured to change a propagation direction of the light pulse sequence to scan a surrounding environment;
- and
- a control unit configured to control an emission frequency and/or emission power of the light pulse sequence based on a scanning speed of the light pulse sequence.
1 more element
A distance measuring device comprising:
- a light emission device configured to emit light pulse sequences in sequence, the light emission device including
- a light pulse generating unit configured to emit the light pulse sequences;
- one or more optical elements configured to change a propagation direction of the light pulse sequence to scan a surrounding environment;
- and
- a control unit configured to control an emission frequency and/or emission power of the light pulse sequence based on a scanning speed of the light pulse sequence;
- a receiving circuit configured to receive part of a light pulse signal reflected by an object from the light pulse sequence emitted by the light emission device, and convert the received light pulse signal into an electrical signal;
- a sampling circuit configured to sample the electrical signal from the receiving circuit to obtain a sampling result;
- and
- an arithmetic circuit configured to calculate a distance between the object and the distance measuring device based on the sampling result.
6 more elements
Dependencies are inferred from the claim text.