Rear optical set for star-grade road monitoring zoom camera lens

Abstract

The invention provides a rear optical set for a star-grade road monitoring zoom camera lens. The rear optical set is characterized by comprising a sixth lens (C6), a seventh lens (C7), an eighth lens (C8), a ninth lens (C9), a tenth lens (C10) and an eleventh lens (C11) in sequence along the light incidence direction. The star-grade road monitoring zoom camera lens, which adopts the rear optical set provided by the invention, adopts an oversized aperture technology and an aperture value reaches F2.0; furthermore, the camera lens adopts a multilayered broad width film plating technology and an ultralow chromatic dispersion optical glass technology so that the light transmission rate is effectively improved, and glaring, ghost image and other phenomena, which easily occur in a common camera lens, are alleviated; and in aspect of appearance, the camera lens is a whole metal body, and the metal shell also has very good compression-resisting and protection effects on the camera lens.

Description

Technical field [0001] The invention relates to the field of lenses, in particular to a rear optical group for a starlight-level road monitoring zoom lens. Background technique [0002] Although the traditional infrared fill light technology can obtain clear imaging under low illumination, it will lose the color and can only form a black and white image. Moreover, through infrared fill light, highly reflective objects such as license plates are easily overexposed. Body color, license plate, etc. are often key clues to solve the case, which cannot be lost-so the demand for clear color imaging under low illumination is increasing. [0003] Low-light cameras are hot products in the surveillance industry that have been launched in recent years with the development of semiconductor technology. A low-illuminance camera, literally, refers to a camera that can still obtain a clearer image even when the light is dark. At present, the security industry usually divides front-end cameras int...

AI Technical Summary

Problems solved by technology

[0002] Although the traditional infrared supplementary light technology can obtain clear images under low illumination, it will lose color and can only form black and white images. Moreover, through infrared supplementary light, highly reflective objects such as license plates are easily overexposed, while clothing colors, The color of the car body and the license plate are often the key clues to solve the case, which cannot be lost—so there are more and more demands for clear color imaging under low illumination

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