Security fixed focus lens

Nov 07, 2022

Lens is an essential part of security monitoring system. With the cooperation of lens and CCD, it can image the distant target on the CCD target surface of the camera.

There are a wide variety of lenses, which can be classified into short focal length, medium focal length, and fixed focal length, zoom lens. From the size of the field of view classification, can be divided into wide Angle, standard, telephoto lens. In terms of structure, it can also be divided into fixed iris lens, manual iris lens, auto ris lens, manual zoom lens, automatic aperture zoom lens, electric three-variable lens and so on. Because the choice of lens is appropriate or not, directly related to the quality of the camera, so it must be reasonable to choose the lens in the practical application.

Fixed light loop fixed focus lens is a relatively simple lens, which only has a manually adjusted focusing ring (the ring is marked with a number of distance reference values). Rotating the ring left and right can make the image on the CCD target plane the clearest, and the image on the monitor screen is also the clearest.

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Security fixed focus lens