Light control system

Abstract

The invention provides a light control system which comprises a polarizer, an optical sensor and a control board. The control board comprises a first end, a second end, a third end, a fourth end, a fifth end and a light intensity detection end, wherein the first end is used for inputting a main power supply and adjusting and controlling the position of the polarizer, the second end is used for detecting the position of the polarizer, the third end is connected with an AC power supply, the fourth end is connected with an external switching power supply, the fifth end is connected with an external host, and the light intensity detection end is connected with the optical sensor. The light control system of the invention can be used for directly controlling parameters of a camera, such as an exposure gain, and the like based on the environmental light intensity, solves the problem of indirect corresponding relation between control input and a controlled amount when controlling an exposure gain mode by using a time parameter and can take favorable image effect.

Description

technical field [0001] The invention belongs to the field of cameras, in particular to a light control system arranged in a protective cover and used for adjusting the exposure gain of the camera according to the external light intensity. Background technique [0002] In fields such as traffic security monitoring, in order to solve the problem of controlling camera image effects by controlling parameters such as camera gain and exposure, the general solution may be to set parameters such as camera gain and exposure by time period. [0003] The problem with this solution is that it does not directly set the camera parameters according to the external light environment. The exposure and gain may cause the picture to be overexposed or dark, and the angles of sunlight and other rays are different in different places and at different times. , so each place may have to set up a set of time and parameter mapping table, even if it can not solve the impact of weather changes, so can ...

AI Technical Summary

Problems solved by technology

[0006] Compared with the prior art, the light control system of the present invention includes a polarizer and a light sensor, which can directly control parameters such as camera exposure gain based on the ambient light intensity, and solves the problem of control input and controlled quantity when using time parameters to control exposure gain. Directly corresponding to the problem of the relationship, you can achieve good image results

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