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Electrical zooming and focusing six million-pixel day and night dual-purpose lens

A lens and pixel technology, applied in the direction of focusing devices, focusing devices, camera focusing devices, etc., can solve the problems of low cost performance, inability to achieve fast zoom, and insufficient precision of electric zoom lenses, and achieve compact structure and short structural length , Accurate effect

Inactive Publication Date: 2015-10-14
FUJIAN FORECAM OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Conventional fixed-focus lenses have only a single focal length, which is very inconvenient to observe when the field of view of the surveillance site needs to be changed, while general electric zoom lenses are not cost-effective, and the accuracy of the application in this area is not enough to achieve fast zooming and accurate The effect of focusing

Method used

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  • Electrical zooming and focusing six million-pixel day and night dual-purpose lens
  • Electrical zooming and focusing six million-pixel day and night dual-purpose lens
  • Electrical zooming and focusing six million-pixel day and night dual-purpose lens

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Such as Figure 1~3 As shown, a motorized zoom and focus 6-megapixel day and night lens, in the optical system of the lens, along the incident direction of light from left to right, the front group A of the lens group with negative focal power and the focal power The rear group B is a positive lens group, and a variable diaphragm C is arranged between the front group A and the rear group B. The front group A includes lens A-1 and lens A-2 arranged in sequence from left to right and lens A-3; said rear group B includes lens B-1, lens B-2, lens B-3, lens B-4 and lens B-5 arranged in sequence from left to right in a cemented group, lens B -6 and lens B-7 are closely connected to each other, using the difference in refractive index and dispersion of the positive and negative lenses of the glued group to correct the aberration of the lens, s...

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Abstract

The invention relates to an electrical zooming and focusing six million-pixel day and night dual-purpose lens. The optical system of the lens is provided with a front lens group A with negative focal power and a rear lens group B with positive focal power sequentially along the light incident direction from left to right; a variable diaphragm C is arranged between the front group A and the rear group B; the front group A comprises a lens A-1, a lens A-2 and a lens A-3 which are arranged in sequence from left to right; the rear group B comprises a lens B-1, a lens B-2, a lens B-3, a gluing group for close connection of a lens B-4 and a lens B-5 and a gluing group for close connection of a lens B-6 and a n lens B-7 which are arranged in sequence from left to right. Through the motor accurately and electrically adjusting the lens, the view angle of a monitoring field can be conveniently selected; when the view field of the monitoring filed needs to be conveniently and accurately switched, adopting the lens is important, and the optical design is optimized; and the lens can be applied to the newest 1 / 1.8'' large-target plane CCD chip on the market, and monitoring needs of a supper large view angle can be met.

Description

technical field [0001] The invention relates to the field of camera lens devices of a monitoring system, in particular to a motorized zoom and focus 6-megapixel day and night lens. Background technique [0002] Conventional fixed-focus lenses have only a single focal length, which is very inconvenient to observe when the field of view of the surveillance site needs to be changed, while general electric zoom lenses are not cost-effective, and the accuracy of the application in this area is not enough to achieve fast zooming and accurate Focus effect. Contents of the invention [0003] The purpose of the present invention is to address the above deficiencies, to provide a motorized zoom and focus with six million pixels day and night, which can realize the function of precisely adjusting the focal length, is suitable for a 1 / 1.8" large target surface CCD chip, and has high resolution imaging capabilities. Use the lens. [0004] The technical solution of the present inventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B15/14G02B7/04G03B13/34
Inventor 吴文龙唐礼量郭栋晖林飞
Owner FUJIAN FORECAM OPTICS CO LTD
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