Why do surveillance cameras turn red at night?

Color deviation of infrared camera. They are completely normal during the day. Turn on the infrared light at night, and it will become black and white. As for red, the CCD program of the camera is not adjusted well. Brightness, color and contrast can be adjusted according to changes in the surrounding environment. As for which environment to adapt to, it depends on the specific needs of individuals.

According to its infrared radiation mechanism, infrared lamps can be divided into two types: semiconductor solid-state light emitting diode (IR LED) and thermal radiation infrared lamps. The former is widely used in CCTV infrared cameras. In fact, an infrared camera is a monitoring device that integrates a monitoring camera, a protective cover, an infrared lamp, a power supply and a heat dissipation unit.

Extended data

Imaging principle

Infrared integrated camera is a kind of camera equipment which integrates camera, protective cover, infrared lamp, power supply and heat dissipation unit. The basic principle of night vision is that ordinary CCD black-and-white camera can feel the spectral characteristics of infrared light (that is, it can feel both visible light and infrared light), and cooperate with infrared lamp as "lighting source" to carry out night vision imaging.

The power and angle of the infrared lamp, the configuration of the camera, the infrared sensitive lens with a certain focal length, and whether there is a good power supply and heat dissipation treatment are important parameters to judge the performance of the infrared integrated camera. There are also many products in the market that separate the camera from the infrared projector, which requires users to have enough understanding of the performance of the infrared lamp and the camera, and can reasonably match it according to the angle of the infrared lamp and the lens parameters of the camera.

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