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High-contrast high-resolution day and night dual-purpose electric zoom lens and focusing method thereof

A motorized zoom lens, high-resolution technology, applied in installation, optics, instruments, etc., can solve problems such as difficulty in adapting to market demand, poor imaging performance of the lens, and small visual monitoring range, and achieve gray-scale performance assistance, lens Small edge dispersion, vivid color effect

Inactive Publication Date: 2016-11-16
FUJIAN FORECAM OPTICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The size of the traditional lens structure is too large, it is inconvenient to carry, the image is blurred, the contrast is reduced, and the imaging performance of the lens is poor. The traditional lens is a fixed-focus lens and a manual zoom lens. The range of visual monitoring is small, and it is difficult to adapt to various climates. environment and market demand

Method used

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  • High-contrast high-resolution day and night dual-purpose electric zoom lens and focusing method thereof
  • High-contrast high-resolution day and night dual-purpose electric zoom lens and focusing method thereof
  • High-contrast high-resolution day and night dual-purpose electric zoom lens and focusing method thereof

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Such as Figure 1~3 As shown, a high-contrast high-resolution day-night dual-purpose electric zoom lens, the optical system of the lens is sequentially provided with the front group A of the lens group with a negative focal power and a focal power of The positive lens group is the rear group B. A diaphragm C is arranged between the front group A and the rear group B. The front group A includes a negative crescent lens A-1 and a biconcave lens A- 2. Double-convex lens A-3; the rear group B includes double-convex lens B-1, double-convex lens B-2 and double-concave lens B-3, which are arranged in sequence from left to right, and a glued group of double-convex lens B-3, and positive crescent lens B-4 , Bi-convex lens B-5.

[0025] In this embodiment, the air gap between the front group A and the rear group B is 8.84 mm, and the air gap bet...

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Abstract

The invention relates to a high-contrast high-resolution day and night dual-purpose electric zoom lens. An optical system of the lens is sequentially provided with a front lens group A with negative focal power and a rear lens group B with positive focal power in the light direction from the left to the right. A diaphragm C is disposed between the front lens group A and the rear lens group B. The front lens group A comprises a negative crescent lens A-1, a biconcave lens A-2 and a biconvex lens A-3 from the left to the right. The rear lens group B sequentially comprises a biconvex lens B-1, the sealed glued combination of a biconvex lens B-2 and a biconcave lens B-3, a positive crescent lens B-4 and a biconvex lens B-5 from the left to the right side. The system is simple in structure, is compact in the assembly of the lens structure, is short in length, is small in size, is portable, is high in contrast, is stable in imaging quality, and is high in resolution.

Description

technical field [0001] The invention relates to a high-contrast high-resolution day-night electric zoom lens and a focusing method thereof. Background technique [0002] With the increasing demand of camera systems for high image quality and low-light performance, market competition is gradually intensifying. Adoption of new technologies to improve product quality and performance plays a vital role in the growth of the security market. The size of the traditional lens structure is too large, it is inconvenient to carry, the image is blurred, the contrast is reduced, and the imaging performance of the lens is poor. The traditional lens is a fixed-focus lens and a manual zoom lens. The range of visual monitoring is small, and it is difficult to adapt to various climates. environment and market needs. Contents of the invention [0003] The object of the present invention is to provide a compact, small volume, high-contrast, high-resolution day-night electric zoom lens and a...

Claims

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Application Information

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IPC IPC(8): G02B15/177G02B7/04
CPCG02B7/04G02B15/177
Inventor 蒋日明何武强陈春花陈文静
Owner FUJIAN FORECAM OPTICS CO LTD
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