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Mini-type 3.6mm day-and-night high-definition prime lens

A fixed-focus lens and miniature technology, applied in optical components, optics, instruments, etc., can solve the problems of declining market competitiveness, increasing difficulty in promotion, increasing product cost, etc., achieving coexistence of volume and high quality, and improving product market competitiveness. , to ensure the effect of image quality

Inactive Publication Date: 2020-02-07
FUJIAN FORECAM OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Often by increasing the volume and lenses, this greatly increases the cost of the product, leading to an increase in the difficulty of product promotion and a decline in market competitiveness
In short, in the current security industry, there are few small-size, low-cost, high-quality fixed-focus lenses in the true sense.

Method used

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  • Mini-type 3.6mm day-and-night high-definition prime lens
  • Mini-type 3.6mm day-and-night high-definition prime lens
  • Mini-type 3.6mm day-and-night high-definition prime lens

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Embodiment Construction

[0022] In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings, but the present invention is not limited thereto.

[0023] refer to Figure 1 to Figure 4

[0024] A miniature 3.6mm day and night dual-purpose high-definition fixed-focus lens, including a main lens barrel 5, in which a front group of lenses, a diaphragm C and a rear group of lenses are sequentially arranged from left to right along the incident direction of light, so that The front group of lenses is a biconcave lens A1, the rear group of lenses is a cemented lens formed by cementing the first biconvex lens B1, the meniscus lens B2 and the second biconvex lens B3, and the front end of the main lens barrel is provided with a The front pressure ring 1 that abuts against the periphery of the group lens.

[0025] In this embodiment, the lens and the spacer are fi...

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Abstract

The invention relates to a mini-type 3.6mm day-and-night high-definition prime lens, comprising a body tube, in which a front lens, an aperture and a rear lens are arranged in order from the left to the right along a light incidence direction. The front lens is a biconcave lens, the rear lens is a cementing lens formed by cementing a first biconvex lens, a meniscus lens and a second biconvex lens,and a front clamping ring butting against the peripheral part of the front lens is arranged at a front end of the body tube. The lens reflects co-existence of small volume and high quality high-definition images.

Description

technical field [0001] The invention relates to a miniature 3.6mm day and night dual-purpose high-definition fixed-focus lens. Background technique [0002] At present, there are various short focal length lenses such as 3.6mm used in security systems on the market, but in order to improve the imaging quality of the lens and reduce stray light. Often by increasing the volume and lenses, this greatly increases the product cost, resulting in increased difficulty in product promotion and a decline in market competitiveness. In short, in the current security industry, there are few fixed-focus lenses with small size, low cost, and high image quality in the true sense. Contents of the invention [0003] The purpose of the present invention is to provide a miniature 3.6mm day and night dual-purpose high-definition fixed-focus lens, which realizes the coexistence of small size and high-quality high-definition image quality. [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): G02B13/00G02B1/00
CPCG02B1/00G02B13/0015G02B13/006
Inventor 杨樟洪陈嘉旺冯科张世忠
Owner FUJIAN FORECAM OPTICS CO LTD