Lidar device using non-uniform multi-pulse
The LiDAR device uses SiPMs and adjusts laser pulse width and time intervals to enhance signal quality and accuracy in low-light environments, addressing performance degradation in SiPM-based systems.
KR1020260113373APending Publication Date: 2026-07-21LG INNOTEK CO LTD
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Patent Information
- Application Number
- KR1020250004657
- Authority / Receiving Office
- KR · KR
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-07-21
AI Technical Summary
Technical Problem
SiPM-based LiDAR systems suffer from performance degradation in low-light environments due to sensitivity to ambient light and ineffective threshold-based signal processing methods.
Method used
A LiDAR device and method that utilizes a photodetector with a silicon photomultiplier (SiPM) and a processor unit to adjust the width of laser pulses and time intervals between multiple pulses, employing a delay circuit and statistical response characteristics to enhance signal quality.
Benefits of technology
Improves signal quality and accuracy in low signal-to-noise ratio conditions by reducing noise interference and enhancing the reliability of distance measurements.
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Smart Images
Figure PAT00022_ABST
Abstract
The present invention provides a LiDAR (Light Detection And Ranging) device comprising: a light emitter for emitting light; a light detector for detecting reflected light that is reflected back from an object by the emitted light; and a processor unit for controlling the light emitter and the light detector; wherein the light emitter comprises: a delay unit for outputting a plurality of delayed trigger signals based on a main trigger signal transmitted by the processor unit; a light driver for generating an electrical signal based on each of the main trigger signal and the delayed trigger signals; and a photodiode array comprising at least one photodiode for emitting light in response to receiving the electrical signal from the light driver.
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