An eye-safe laser lighting night vision system

Abstract

The invention relates to a human eye-safe laser lighting night vision system. The system includes: a laser lighting module, an InGaAs FPA near-infrared camera, a linkage zoom control module, a photosensitive controller, a telephoto lens and a power supply module; the telephoto lens is used for Zoom to realize long-distance monitoring; photosensitive controller, used to control the laser lighting module to turn on or off according to the light intensity of the environment; linkage zoom control module, used to control the telephoto lens and laser lens linkage zoom of the laser lighting module; InGaAs FPA type close-up The infrared camera is used to collect short-wave infrared video; the laser lighting module is used to generate 1550nm illumination laser for eliminating laser speckle, and assists the InGaAs FPA near-infrared camera to collect short-wave infrared video; the system provided by the invention uses a 1550nm laser to generate laser beams to assist Illumination, through the InGaAs FPA camera to collect images, has the advantages of human eye safety, long irradiation distance, stable laser power, and strong fog penetration ability.

Description

technical field [0001] The invention relates to the field of laser night vision, in particular to an eye-safe laser lighting night vision system. Background technique [0002] Laser night vision technology is a kind of active infrared night vision technology. The main application mode is to actively emit laser light to illuminate the target in a dark environment with no visible light or weak visible light. At the same time, a high-throughput night vision lens is used to receive laser imaging reflected by the target. and output. At present, in order to realize long-distance monitoring under low-light conditions at night, the continuous wave semiconductor laser in the near-infrared band is mainly used for supplementary light. This is due to the characteristics of the laser itself such as good monochromaticity, small divergence angle, and high brightness. [0003] At present, most of the light wavelengths of lasers used in common laser night vision devices are in the range of ...

AI Technical Summary

Problems solved by technology

At present, in the field of medium and long-distance laser night vision, the use of high-power lasers has become the mainstream. Due to the characteristics of good directionality and high power density of lasers, the radiation damage of high-power lasers to human eyes cannot be ignored. Concentrated irradiation of high-power lasers May cause eye damage or even blindness

At present, the domestic safety standards for laser night vision devices are not perfect. According to the existing national standard GB7247.1 "Safety of Laser Products", the high-power lasers used by laser night vision devices on the market now exceed the safety standards to varying degrees.

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