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Multi-mirror integrated large-view-field long-focal-distance axis four-mirror optical system

An optical system and focal length technology, applied in the field of space optics, can solve the problems of complex structure of off-axis four-mirror system, difficulty in assembly and inspection, difficulty in light weight, etc., to shorten processing time, facilitate inspection and assembly, and shorten processing Effect

Inactive Publication Date: 2021-06-25
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0005] In order to solve the problems of the existing off-axis four-mirror system with complex structure, large volume, difficulty in light weight and difficult installation and detection, the present invention provides a multi-mirror integrated large field of view long-focus distance axis four-reflector optical system

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  • Multi-mirror integrated large-view-field long-focal-distance axis four-mirror optical system

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[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] like figure 1 As shown, a multi-mirror integrated large field of view and long focal distance axis four-mirror optical system, including:

[0025] The primary mirror 1, as the first reflection surface of the system; the secondary mirror 2, as the aperture stop of the system, is coaxial with the primary mirror 1, and is on the reflected light path of the primary mirror 1; the third mirror 3 , which is coaxial with the main mirror 1 and the secondary mirror 2, and is on the reflected light path of the secondary mirror 2; the fourth mirror 4 is coaxial with the main mirror 1, the secondary mirror 2, and the third mirror 3. , on the reflected light path of the third mirror 3, and the focal plane 5;

[0026] The central positions of the main reflector 1 and the third reflector 3 are coincident and the parameters of each surface are equal, and the position...

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Abstract

The invention provides a multi-mirror integrated large-view-field long-focal-distance axis four-mirror optical system, and belongs to the technical field of space optics. The problem that an existing off-axis optical system is large in size and high in assembling and adjusting difficulty is solved. The optical system comprises a primary reflector, a secondary reflector, a third reflector and a fourth reflector. The main reflecting mirror and the third reflecting mirror form an integrated mirror A, and the secondary reflecting mirror and the fourth reflecting mirror form an integrated mirror B; light emitted by the light source is sequentially reflected by the primary reflector, the secondary reflector, the third reflector and the fourth reflector and then converged on the focal plane. The system has the advantages of being compact and easy to install and adjust, and the machining cost and the launching cost can be greatly reduced; the optical system can meet the requirements of imaging from visible light to infrared band and multispectral detection.

Description

technical field [0001] The invention belongs to the technical field of space optics, in particular to a multi-mirror integrated large field of view long focal distance axis four-reflection optical system. Background technique [0002] The large field of view and long focal length space camera can perform one-time high-definition imaging of a large range of targets when used in aerospace remote sensing observations. It is widely used in environmental monitoring, resource census, military and national defense and other fields. object. At present, the commonly used optical systems of space cameras mainly include transmission type, coaxial reflection type, coaxial foldback type and off-axis reflection type. Among them, the transmission type system cannot achieve large vision at the same time due to the limitation of material size and its optical and mechanical properties. Field and long focal length, although the coaxial reflection type and the coaxial foldback system are easy ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B17/06
CPCG02B17/0663
Inventor 刘春雨谢运强樊星皓刘帅
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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