Anti-blooming devices, night vision systems and vehicles

Abstract

The present invention proposes an anti-overexposure device, a night vision system and a vehicle, wherein the night vision system includes an anti-overexposure device, and the anti-overexposure device uses a detection circuit to detect the illumination light of a preset wavelength band emitted by an intersecting vehicle to obtain The light signal, and then the control circuit controls the adjustment component to adjust the illumination area of ​​the light source according to the light signal detected by the detection circuit, so that the adjustment component adjusts the illumination area of ​​the light source under the control of the control circuit, so as to eliminate the impact of the light source on the intersection Image overexposure caused by mutual active night vision systems of the same vehicle. Since the embodiment of the present invention achieves the purpose of preventing overexposure by adjusting the illumination area of ​​the light source, it can be applied to various types of light sources and solves the problem of mutual interference between two passing vehicles with the same active night vision system in the prior art. The overexposure phenomenon of the night vision image is caused, and has high light source utilization rate, low cost and wide applicability.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to an anti-overexposure device, a night vision system and a vehicle. Background technique [0002] With the continuous development of vehicle night vision systems, active infrared night vision systems are more and more applied to security monitoring, vehicles and other fields, so as to increase the line of sight and monitor the road conditions ahead at night or when visibility is poor. Night vision lighting is an essential part of the active infrared night vision system, mainly used to provide the light source lighting required for imaging. [0003] However, in practical applications, it is found that when two vehicles have the same night vision system, when the two vehicles meet, the infrared illumination light from the opposite vehicle will directly shine on the night vision system of another vehicle, so the night vision system of the vehicle The imaging unit will experie...

AI Technical Summary

Problems solved by technology

[0003] However, in practical applications, it is found that when two vehicles have the same night vision system, when the two vehicles meet, the infrared illumination light from the opposite vehicle will directly shine on the night vision system of another vehicle, so the night vision system of this vehicle The imaging unit will experience severe overexposure, which will affect the imaging of the night vision system

[0004] At present, amplitude modulation, MEMS avoidance, and grid block avoidance methods have appeared in the prior art, but these methods are less reliable. The polarization characteristics of the infrared light source are used to avoid polarization, but the utilization rate of the light source is extremely low and the cost is high, so it cannot be widely used in vehicles

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