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Dual-waveband common-caliber large-target-surface optical athermalization infrared lens and optical system

An infrared lens and common-aperture technology, applied in the field of optical lenses, can solve the problems of large volume and weight, high precision requirements, complex structure, etc., and achieve clear imaging, simple optical structure, and good imaging stability.

Active Publication Date: 2021-04-09
西安中科立德红外科技有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problems of the existing dual-band common-aperture optical athermalization infrared optical system with complex structure, high precision requirements, large volume and weight, and small field of view, and to provide a dual-band common-aperture large target Surface optical athermalized infrared lens and optical system

Method used

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  • Dual-waveband common-caliber large-target-surface optical athermalization infrared lens and optical system
  • Dual-waveband common-caliber large-target-surface optical athermalization infrared lens and optical system
  • Dual-waveband common-caliber large-target-surface optical athermalization infrared lens and optical system

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0048] An optical athermalized infrared lens with dual-band common aperture and large target surface, such as figure 1 As shown, it includes a lens barrel, and a fairing A with negative refractive power, a first negative lens B, a second positive lens C, a third positive lens D, and a fourth negative lens arranged in sequence along the optical path in the lens barrel E, the fifth positive lens F, the sixth positive lens G and the filter H, and the rotary drive mechanism of the filter H, the control system of the rotary drive mechanism; the filter H is fixed on the filter wheel of the rotary drive mechanism , can be rotated and switched according to imaging requirements; each lens and filter H are positioned by a spacer, and the lens barrel and spacer are made of aluminum alloy.

[0049] The fairing A is a spherical lens; the first negative lens B is a ...

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Abstract

The invention relates to an optical lens, in particular to a dual-waveband common-caliber large-target-surface optical athermalization infrared lens and an optical system. The invention aims to solve the technical problems of complex structure, high precision requirement, large size and weight and small field angle of an existing dual-band common-caliber optical athermalization infrared lens, and provides a dual-band common-caliber large-target-surface optical athermalization infrared lens and an optical system. A refraction type light path is adopted to achieve dual-band common-caliber design, the outer diameter of an optical element is effectively compressed through a secondary imaging system, a double-color refrigeration detector is selected, miniaturization and light weight of the optical system are achieved, imaging stability is good, quality is high, and the problems that an existing dual-band common-caliber infrared lens is large in size and weight are solved. And the large target surface can provide a larger field angle.

Description

technical field [0001] The invention relates to an optical lens, in particular to an optical athermal infrared lens and an optical system with a dual-band common-aperture large target surface. Background technique [0002] With the development of infrared optics, various fields put forward higher requirements for thermal imaging cameras, and cooling thermal imaging cameras are gradually being widely used because of their high response sensitivity. Among them, the dual-band common-aperture infrared lens can clearly image the medium-wave and long-wave bands at the same time, and obtain the characteristic information of the target. The demand for use in telemetry and other fields is gradually increasing. At present, most of the dual-band common-aperture optical athermalization infrared lenses use the refraction / reflection system to realize the dual optical path common-aperture. The problems of this type of optical system are: complex structure, high precision requirements, larg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/00G01J5/08G02B1/02G02B7/02G02B13/00G02B13/06G02B13/14G02B13/18
CPCG01J5/00G01J5/0803G01J5/0806G02B13/0045G02B13/0055G02B13/008G02B13/06G02B13/14G02B13/18G02B7/021G02B7/026G02B1/02G01J2005/0077
Inventor 焦洋洋郭德福王鹏闫福文陈继铭赵胜强
Owner 西安中科立德红外科技有限公司
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