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Far-infrared long-wave far-shot and high-fog-permeability athermal lens and manufacturing method thereof

A production method and foreign technology, applied in installation, optics, instruments, etc., can solve the problems of image quality degradation, optical system focal length change, image plane drift, etc., and achieve the effect of compact structure, high resolution, and small distortion.

Inactive Publication Date: 2016-11-09
FUJIAN FUGUANG TIANTONG OPTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • 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 of working temperature will cause the focal length change of the optical system, the image surface is elegant, and the image quality is reduced.

Method used

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  • Far-infrared long-wave far-shot and high-fog-permeability athermal lens and manufacturing method thereof
  • Far-infrared long-wave far-shot and high-fog-permeability athermal lens and manufacturing method thereof

Examples

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Embodiment 1

[0021] Embodiment one: if Figure 1~2 As shown, a far-infrared long-wave telephoto high-transmission athermalization lens includes an optical system, and the optical system includes a front group of lenses A and a rear group of lenses B that are sequentially arranged along the light incident direction, and the front group of lenses The refractive powers of the lens group and the lens group of the rear group are both positive, and the lenses of the front group lens group and the lens group of the rear group are both crescent-shaped lenses.

[0022] In this embodiment, the air space L between the front group of lenses and the rear group of lenses is 44.94 mm.

[0023] In this embodiment, a mechanical system is also included. The mechanical system includes a sleeve 2. The front part of the sleeve is provided with a front main cylinder 3 for installing the front group of lenses, and the rear part of the sleeve is provided with a front main cylinder for installing the rear group le...

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PUM

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Abstract

The invention relates to a far-infrared long-wave far-shot and high-fog-permeability athermal lens and a manufacturing method thereof. The athermal lens comprises an optical system. The optical system comprises a front group of lenses and a rear group of lenses which are sequentially arranged along the incident direction of light rays. The focal power of the front group of lenses and the focal power of the rear group of lenses are both positive. The front group of lenses and the rear group of lenses are crescent-shaped lenses. The athermal lens is simple in structure and convenient to use.

Description

technical field [0001] The invention relates to a far-infrared long-wave telephoto high-fog-permeable athermal lens and a manufacturing method thereof. 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, drastic changes in operating temperature will cause changes in the focal length of the optical system, image surface drift, and image quality degradation. In order to eliminate or reduce the impact of temperature changes on the imaging of the optical system, corresponding compensation techniques must be used to keep the focal length of the optical system constant within a large temperature range to ensure good imaging quality. Contents of the inv...

Claims

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Application Information

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IPC IPC(8): G02B13/14G02B7/02
CPCG02B7/021G02B7/022G02B7/023G02B7/026G02B7/028G02B13/146
Inventor 魏泽岚何武强郑勇强陈潇
Owner FUJIAN FUGUANG TIANTONG OPTICS
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