Coaxial four-mirror optical system for visible light-long wave infrared common-caliber imaging

A long-wave infrared, optical system technology, applied in the field of optical systems, can solve problems such as unfavorable system imaging quality, beam splitter energy loss, etc., to achieve the effect of improving functional density and cost performance, compact structure, and reducing requirements

Active Publication Date: 2022-05-17
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

However, the compactness of the axial length of the optical-mechanical structure of the coaxial two-mirror system and the coaxial three-mirror system needs to be further improved; Additional energy loss is detrimental to the imaging quality of the system

Method used

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  • Coaxial four-mirror optical system for visible light-long wave infrared common-caliber imaging
  • Coaxial four-mirror optical system for visible light-long wave infrared common-caliber imaging
  • Coaxial four-mirror optical system for visible light-long wave infrared common-caliber imaging

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Embodiment 1

[0052] A coaxial four-mirror optical system for visible light-long-wave infrared co-aperture imaging, including a main reflector 1, a first transmission mirror 2, a third reflection mirror 3, a fourth reflection mirror 4, a second transmission mirror 5, and a third transmission mirror 6 and the fourth transmission mirror 7; the main reflection mirror 1, the first transmission mirror 2, the third reflection mirror 3 and the fourth reflection mirror 4 are coaxially arranged and are all secondary aspherical mirrors, and the main reflection mirror 1 is used as a visible light-long-wave infrared common The aperture stop of the coaxial four-mirror optical system for aperture imaging, the material of the first transmission mirror 2 is germanium glass and the surface is coated, the third mirror 3 is integrated with the main mirror 1, and the third mirror 3 and The fourth reflecting mirror 4 all has a clear hole, the second transmitting mirror 5, the third transmitting mirror 6 and the ...

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Abstract

The invention relates to a coaxial four-mirror optical system for visible light-long wave infrared common-caliber imaging, and belongs to the technical field of optical systems. The technical problem that in the prior art, the axial length compactness and the imaging quality of a visible light / infrared composite imaging system need to be improved is solved. The optical system comprises a main reflecting mirror, a first transmitting mirror, a third reflecting mirror, a fourth reflecting mirror, a second transmitting mirror, a third transmitting mirror and a fourth transmitting mirror. The optical system has visible light panchromatic, visible light multispectral and long-wave infrared imaging functions at the same time, the requirement of a space remote sensor for ground illumination conditions is lowered, all-day space optical remote sensing reconnaissance and dynamic monitoring are achieved, the function density and cost performance of space optical loads are improved, the structure is compact, distortion is low, and the system is suitable for large-scale popularization and application. The stray light inhibition performance is good; and processing and adjustment are convenient.

Description

technical field [0001] The invention belongs to the technical field of optical systems, and in particular relates to a coaxial four-reflection optical system for visible light-long-wave infrared co-aperture imaging. Background technique [0002] With the rapid development of aerospace technology, people's demand for high-resolution images is becoming more and more urgent. While satisfying high-resolution imaging, people's requirements for optical system composite imaging, compact structure, and ease of processing and assembly It is also getting higher and higher, and puts forward the demand for visible light / infrared composite imaging. [0003] In the prior art, the visible light / infrared composite imaging optical system is mainly based on the coaxial two-reflector and coaxial three-mirror system, and the optical filter / color separation film is still used for light splitting. For example, the Kompsat-3A sub-meter high-resolution optical remote sensing satellite independentl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B17/06
CPCG02B17/0657G01J3/36G02B17/0844G02B17/0856G01J3/021G01J3/2823G01J2003/2826
Inventor 徐伟李清雅王天聪朴永杰李宗轩张德福
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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