Optical Athermal Infrared Lens and Optical System with Dual-band Common Aperture and Large Target Surface
An infrared lens, common aperture technology, used in the field of optical lenses, can solve the problems of large volume and weight, high precision requirements, small field of view, etc., and achieve the effect of clear imaging, simple optical structure, and large field of view.
Active Publication Date: 2021-12-31
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
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[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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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. The purpose of the present invention is to solve the technical problems of the existing dual-band common-aperture optical athermalization infrared lens with complex structure, high precision requirements, large volume and weight, and small field of view, and provide a dual-band common-aperture large target surface Advanced optical athermal infrared lens and optical system. The refraction optical path is used to realize the dual-band common-aperture design, and the outer diameter of the optical element is effectively compressed through the secondary imaging system, and the dual-color cooling detector is selected to realize the miniaturization and light weight of the optical system, and the imaging stability is good and the quality is high. , which solves the problem of large volume and weight of the existing dual-band common-aperture infrared lens, and its large target surface can provide a larger field of view.
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...
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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 焦洋洋郭得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