Laser supplementing device and illumination control method thereof

Abstract

The invention discloses a laser supplementing device and an illumination control method thereof. The device comprises a laser device, a first lens device, a uniforming piece and a second lens device. The laser device, the first lens device, the uniforming piece and the second lens device are sequentially arranged on the same optical axis, and the second lens device can move forwards and backwards along the optical axis. The uniforming piece is driven by a direct-current brushless motor to rotate regularly. The device is further additionally provided with a rotation speed adjusting and control module used for adjusting the rotation speed of the direct-current brushless motor according to intensity changes of light. The utilization rate of light energy is high, the illumination angle can be continuously adjusted through forward and backward moving of positive lenses or positive lens sets, and the light supplementing requirement of a camera is basically met. Meanwhile, laser is uniformized and speckles are eliminated through the uniforming piece which rotates regularly, so that images shot by the camera are clear. The rotation speed adjusting and control module is additionally disposed so that the laser supplementing device can be more stable and more reliable and can meet the light supplementing requirement of the camera under different light intensities.

Description

technical field [0001] The invention relates to the technical field of infrared laser supplementary light at night, in particular to a laser supplementary light device and an illumination control method thereof. Background technique [0002] The application of laser supplementary light technology in the field of security monitoring is a relatively innovative technology. As a supplementary light source, laser has the advantages of long emission distance, strong brightness, long life, high efficiency, low light attenuation, and low energy consumption. , Long-distance monitoring and imaging fields, such as in chemical industry, forestry, customs, border defense and other industry applications, especially in security monitoring fields such as safe cities and safe traffic. With the development of laser supplementary lighting technology, the requirements for lighting quality are getting higher and higher. At present, the laser supplementary light methods used in the market have d...

AI Technical Summary

Problems solved by technology

At present, the laser supplementary light methods used in the market have disadvantages such as low utilization rate of light energy, difficulty in adjusting the far and near angle of supplementary light, poor supplementary light effect, and insufficient stability and reliability of the supplementary light device.

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