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Aspherical Infrared Night Vision Zoom Camera Lens

A technology of camera lens and aspheric surface, which is applied in the direction of optical components, optics, instruments, etc., can solve the problems of difficult correction, large spherical aberration, etc., and achieve the effect of high resolution, accurate precision, and short structure length

Active Publication Date: 2016-04-27
FUJIAN FORECAM OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a high-sensitivity lens with a small F value, the larger the effective light aperture, the larger the spherical aberration, and of course the more difficult it is to correct

Method used

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  • Aspherical Infrared Night Vision Zoom Camera Lens
  • Aspherical Infrared Night Vision Zoom Camera Lens
  • Aspherical Infrared Night Vision Zoom Camera Lens

Examples

Experimental program
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Embodiment Construction

[0019] like figure 1 As shown, an aspheric infrared night vision zoom camera lens, its optical system is provided with a front group A with a negative focal power, a variable diaphragm C adjusted by an optical drive 6, and The rear group B with positive refractive power, the front group A is sequentially provided with a positive crescent lens A-1, a first cemented group made of a positive crescent lens A-2 and a negative crescent lens A-3, and a biconcave lens A -4 and the second cemented group of biconvex lens A-5, biconcave lens A-6 and biconcave lens A-7, the rear group B is provided with aspheric lens B-1 in turn, negative crescent lens B-2 and The third cemented group in which biconvex lens B-3 is closely bonded, the fourth cemented group in which biconvex lens B-4 and positive crescent lens B-5 are closely bonded, and negative crescent lens B-6.

[0020] In this embodiment, the air gap between the front group A and the rear group B is 14.18mm~2.63mm, the air gap between...

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Abstract

The invention relates to an aspherical infrared night vision zoom pick-up lens, wherein a front group A with a negative focal power, a variable diaphragm C and a rear group B with a positive focal power are sequentially arranged in the optical system of the aspherical infrared night vision zoom pick-up lens along the left-to-right incident direction of a light ray; the front group A is sequentially provided with a positive meniscus lens A-1, a first glued group formed by airtightly connecting a positive meniscus lens A-2 with a negative meniscus lens A-3, a second glued group composed of a biconcave lens A-4 and a biconcave lens A-5, a biconcave lens A-6 and a biconcave lens A-7; the rear group B is sequentially provided with an aspherical lens B-1, a third glued group formed by airtightly connecting a negative meniscus lens A-2 with a biconvex lens B-3, a fourth glued group formed by airtightly connecting a biconvex lens B-4 with a positive meniscus lens B-5, and a negative meniscus lens B-6. The aspherical infrared night vision zoom pick-up lens has the advantages of being high in optical index, large in optical target surface, high in resolution ratio of greater than three million pixels, and the like.

Description

technical field [0001] The invention relates to a video camera lens device, in particular to an aspheric infrared night vision zoom camera lens, which belongs to the field of optoelectronic technology. Background technique [0002] The infrared lens is the IR lens, which uses special optical glass materials and uses the latest optical design methods to eliminate the focal plane shift of visible light and infrared light, so the light from visible light to infrared light can be in the same focus Surface position imaging, so that the image can be clear. In addition, the infrared lens also uses a special multi-layer coating technology to increase the transmittance of infrared light, so the camera with IR lens can monitor at night farther than the camera with ordinary lens. [0003] At present, the monitoring market has more and more demands for 24h continuous monitoring, resulting in more and more day and night cameras. If this kind of camera adopts ordinary lenses, the image ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/177
Inventor 冯世华肖维军何武强张世忠
Owner FUJIAN FORECAM OPTICS CO LTD
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