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

A zoom lens and starlight-level technology, applied in the field of lenses, can solve the problems of loss of color, loss of clear color imaging requirements, etc., to achieve the effect of reducing glare, suppressing the headlights of passing vehicles, and improving the light transmittance

Inactive Publication Date: 2016-06-08
南京昂驰光电科技有限公司
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  • Summary
  • Abstract
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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

Method used

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

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Example Embodiment

[0057] The present invention will be further described below in conjunction with the drawings:

[0058] Such as Figure 1 to Figure 40 , A rear optical group for a starlight level road monitoring zoom lens, characterized in that: the rear optical group includes a sixth lens C6, a seventh lens C7, an eighth lens C8, and a ninth lens C9 arranged in sequence along the incident direction of light. The tenth lens C10 and the eleventh lens C11, the sixth lens C6, the ninth lens C9 are biconvex lenses, the tenth lens C10 is a single convex lens, the seventh lens C7 is a biconcave lens, and the eighth lens The C8 and the eleventh lens C11 are crescent-shaped lenses, and the eighth lens C8 and the ninth lens C9 form a close cemented group.

[0059] The radius of curvature of the S11 surface of the sixth lens C6 is 39.439mm, the radius of curvature of the S12 surface is -51.155mm, and the refractive index is 1.945958±50X10 -5 , The dispersion coefficient is 17.944±0.8%, the effective diamet...

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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...

Claims

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Application Information

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IPC IPC(8): G02B13/00
CPCG02B13/006
Inventor 凌永康杨芳戴根
Owner 南京昂驰光电科技有限公司
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