High-resolution manual zoom camera lens and control method thereof

A camera lens and high-resolution technology, applied in the field of high-resolution manual zoom camera lens and its control, can solve the problems of inconvenient observation and achieve the effect of compact structure, accurate precision and large field of view

Active Publication Date: 2017-02-22
FUJIAN FORECAM OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The conventional fixed-focus lens has only one focal length, and it is very inconvenient to observe when the environmental conditions of the monitoring site are not well understood; the engineering personnel need to adjust the focal length within a certain range during the construction and commissioning process to find a lens that can satisfy the user. Observation range, which is especially needed in on-site construction

Method used

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  • High-resolution manual zoom camera lens and control method thereof
  • High-resolution manual zoom camera lens and control method thereof

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Embodiment Construction

[0021] The high-resolution manual zoom camera lens of the present invention, in the optical system of the lens, the front group A with negative focal power, the rear group B with positive focal power and the front group A with positive The variable diaphragm C between the group A and the rear group B; the front group A is composed of a glued sheet composed of negative crescent lens A-1, biconcave lens A-2 and biconvex lens A-3 arranged in sequence, so The latter group B is the first rear cemented group composed of biconvex lens B-1, positive crescent lens B-2, biconvex lens B-3, biconvex lens B-4 and biconcave lens B-5 arranged in sequence , and the second rear glued group composed of biconvex lens B-6 and positive crescent lens B-7, and the front part of the lens is provided with a focusing wheel.

[0022] Further, the air gap between the negative crescent lens A-1 and the biconcave lens A-2 in the above-mentioned front group A is: 4.67mm, and the double-convex lens B-1 in th...

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Abstract

The invention relates to a high-resolution manual zoom camera lens and its control method, characterized in that: the optical system of the lens is respectively provided with a front group A with a negative focal power, an optical focal The rear group B with positive power and the variable diaphragm C between the front group A and the rear group B; the front group A is composed of negative crescent lens A‑1, double concave lens A‑2 and double Convex lens A-3 composed of glued film, high-resolution manual zoom camera lens has simple structure and reasonable design, which is beneficial to conveniently select the field of view of the monitoring site through manual adjustment of the lens, and find a focal length adjustment in a certain range An observation range that satisfies the user.

Description

technical field [0001] The invention relates to a high-resolution manual zoom camera lens and a control method thereof. Background technique [0002] The conventional fixed-focus lens has only one focal length, and it is very inconvenient to observe when the environmental conditions of the monitoring site are not well understood; the engineering personnel need to adjust the focal length within a certain range during the construction and debugging process to find a lens that can satisfy the user. Observation range, which is especially needed in on-site construction. Contents of the invention [0003] The object of the present invention is to provide a high-resolution manual zoom camera lens. The high-resolution manual zoom camera lens has a simple structure and a reasonable design, and is beneficial to manually adjust the lens. [0004] The high-resolution manual zoom camera lens of the present invention is characterized in that: the optical system of the lens is respectiv...

Claims

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Application Information

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IPC IPC(8): G02B15/177G02B7/10G03B13/32
CPCG02B7/10G02B15/177G03B13/32
Inventor 蒋日明肖维军黄健欣王烨
Owner FUJIAN FORECAM OPTICS CO LTD
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