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Three-piece far infrared electric whole set focusing type uncooled lens

A far-infrared, three-chip technology, applied in installation, optics, instruments, etc., can solve the problems of optical system focal length change, image quality degradation, and image plane drift, etc., to achieve improved optical imaging performance, high pass rate, and compact structure Effect

Active Publication Date: 2017-06-13
FUJIAN FUGUANG TIANTONG OPTICS
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Because infrared optical materials and mechanical materials will produce thermal deformation when the temperature changes, the drastic change in the working temperature will cause the focal length change of the optical system, the image plane drift, and the image quality to decline. Different degrees of influence

Method used

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  • Three-piece far infrared electric whole set focusing type uncooled lens
  • Three-piece far infrared electric whole set focusing type uncooled lens
  • Three-piece far infrared electric whole set focusing type uncooled lens

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Embodiment Construction

[0017] In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following specific embodiments are given and the accompanying drawings are described in detail as follows, but the present invention is not limited thereto.

[0018] refer to Figure 1 to Figure 4

[0019] A three-piece far-infrared motorized group focusing type uncooled lens, comprising a main lens barrel 8, in the main lens barrel, a first lens A with positive focal power is sequentially arranged along the incident direction of light from front to back. The second lens B with negative refractive power and the third lens C with positive refractive power, the air space A1 between the first lens and the second lens is 2.19mm; the air space B1 between the second lens and the third lens is 22.43mm, and the first lens, the second lens and the third lens are respectively crescent lenses. The main lens barrel is covered with a sleeve 1, the rear end...

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Abstract

The invention relates to the technical field of optical lens devices, in particular to a three-piece far infrared electric whole set focusing type uncooled lens. The three-piece far infrared electric whole set focusing type uncooled lens comprises a main lens barrel, a first lens with positive focal power, a second lens with negative focal power and a third lens with positive focal power are sequentially arranged inside the main lens barrel in the incidence direction, from front to back, of light, the main lens barrel is sleeved with a sleeve, a connecting base is arranged at the rear end of the sleeve, and a focusing mechanism for focusing is arranged between the connecting base and the sleeve. The lens is simple in structure, and the imaging property is improved conveniently.

Description

technical field [0001] The invention relates to the technical field of optical lens devices, in particular to a three-piece far-infrared electric adjustment group focusing type uncooled lens. Background technique [0002] With the rapid development of science and technology and the continuous development and maturity of uncooled detector technology, long-wave infrared uncooled optical systems have been widely used in both military and civilian fields. Since infrared optical materials and mechanical materials will produce thermal deformation when the temperature changes, the drastic changes in the working temperature will cause the focal length change of the optical system, the image plane drift, and the image quality degradation. Different degrees of influence. In order to eliminate or reduce the influence of temperature changes on the imaging of the optical system, the corresponding compensation technology must be used to keep the focal length of the optical system unchang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/04G02B7/02
CPCG02B7/026G02B7/04
Inventor 周阳肖维军魏泽岚郑勇强黄志杰
Owner FUJIAN FUGUANG TIANTONG OPTICS
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