Low-distortion wide-spectrum high-resolution through-fog television camera lens and assembly method thereof

A high-resolution, camera lens technology, applied in the direction of TV, color TV, color TV parts, etc., can solve the problems of large image distortion, low performance index, narrow spectral range, etc., and achieve the effect of simple structure

Active Publication Date: 2019-11-08
FUJIAN FUGUANG TIANTONG OPTICS
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Their performance indicators are low, and they are only suitable for ordinary cameras with about 1 million pixels; their spectral range is narrow, and they can only be used under daytime light conditions of 480nm to 700nm, and cannot realize the fog penetration function, and cannot meet the requirements for complex environments; The lens with large image distortion will bring extra calculation to the correction of the TV camera tracking recognition system

Method used

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  • Low-distortion wide-spectrum high-resolution through-fog television camera lens and assembly method thereof
  • Low-distortion wide-spectrum high-resolution through-fog television camera lens and assembly method thereof
  • Low-distortion wide-spectrum high-resolution through-fog television camera lens and assembly method thereof

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Embodiment Construction

[0014] like Figure 1~4 As shown, a low-distortion wide-spectrum high-resolution fog-permeable TV camera lens, the optical system of the lens includes a front group A, a diaphragm C and a rear group B that are sequentially arranged along the incident direction of light from front to back. Group A is, from front to back, negative meniscus lens A-1, positive meniscus lens A-2 and the third lens closely connected by biconvex lens A-3, biconcave lens A-4 and positive meniscus lens A-5. A cemented group; the rear group B is the second cemented group, biconvex lens B-3 and negative meniscus lens B-4, which are closely connected by positive meniscus lens B-1 and biconcave lens B-2 from front to back ; Among them, the negative meniscus lens A-1 is used as the fairing of the lens.

[0015] In this embodiment, the air gap between the negative meniscus lens A-1 and the positive meniscus lens A-2 is 2.3 mm, and the air gap between the positive meniscus lens A-2 and the first cemented gro...

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Abstract

The invention relates to a low-distortion wide-spectrum high-resolution through-fog television camera lens and an assembly method thereof. An optical system of the lens comprises a front group A, a diaphragm C and a rear group B. The front group A sequentially comprises a negative meniscus lens A-1, a positive crescent lens A-2 and a first glued group from front to back, wherein the first glued group is formed by closely connecting a biconvex lens A-3, a biconcave lens A-4 and a positive meniscus lens A-5; the rear group B sequentially comprises a second glue group, a biconvex lens B-3 and a negative meniscus lens B-4 from front to back, wherein the second glue group is formed by closely connecting a positive meniscus lens B-1 and a biconcave lens B-2. The camera lens is simple, reasonableand compact in structure, has high resolution power in the spectrum range of 450-1000 nm, can be matched with a five megapixel high-resolution CCD or CMOS camera, still has enough energy to provide high-quality images through lens imaging under special environments such as rain, fog and smoke, and meets the requirements for target recognition and tracking.

Description

technical field [0001] The invention relates to a low-distortion wide-spectrum high-resolution fog-permeable TV camera lens and an assembly method thereof. Background technique [0002] The emergence and application of small TV surveillance cameras have a history of 20 to 30 years, and there are various types of miniature camera lenses to match them. Their performance indicators are low, and they are only suitable for ordinary cameras with about 1 million pixels; their spectral range is narrow, and they can only be used under daytime light conditions of 480nm to 700nm, and cannot realize the fog penetration function, and cannot meet the requirements for complex environments; A lens with large image distortion brings additional calculation load to the correction of the TV camera tracking recognition system. Contents of the invention [0003] In view of this, the purpose of the present invention is to provide a simple and compact structure, a low distortion wide spectrum hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B7/02H04N5/225
CPCG02B13/006G02B7/021G02B7/022H04N23/54H04N23/55Y02A90/10
Inventor 杨为锦刘涛陈梦强徐玉洁
Owner FUJIAN FUGUANG TIANTONG OPTICS
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