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A total reflection afocal optical system

An afocal optical system, total reflection technology, applied in optics, optical components, instruments, etc., can solve the problems of difficult design, secondary occlusion imaging distortion, etc., to achieve compact structure, good adaptability, avoid secondary blocking effect

Active Publication Date: 2020-12-11
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] For the design of multi-band, common-aperture afocal optical system, the form of the existing transmissive or catadioptric optical system is limited by the material and the design is difficult, while the reflective afocal optical system usually has the problem of secondary occlusion and large imaging distortion

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] In order to make the description of the present disclosure more detailed and complete, the following provides an illustrative description of the implementation modes and specific examples of the present invention; but this is not the only form for implementing or using the specific embodiments of the present invention.

[0028] The embodiment of the present invention provides a total reflection afocal optical system, the optical elements in the system are all reflective elements, which can receive light of different wavelength bands without chromatic aberration, thus having the advan...

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Abstract

The present invention relates to the field of optical imaging technology, in particular to a total reflection afocal optical system, which includes: a first optical path module and a second optical path module are arranged sequentially along the optical path, and the first optical path module includes The first reflective mirror and the second reflective mirror are arranged sequentially, and the second optical path module includes a third reflective mirror and a fourth reflective mirror arranged sequentially along the optical path. The system of the present invention adopts four reflectors, all of which are reflective elements, which can receive light of different wavelength bands without producing chromatic aberration, thus having the advantages of multi-band and common aperture, and four reflectors constitute a non-coaxial optical system , compressing the incident parallel wide beams into parallel thin beams, avoiding the secondary occlusion of light, meeting the confocal conditions at the same time, having small imaging distortion characteristics, compact structure, and good adaptability.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to a total reflection afocal optical system. Background technique [0002] An afocal optical system is an optical system in which both the incident and outgoing wavefronts are plane waves, and has no converging and diverging effects on the beam, also known as a telescope system. In addition to being used for traditional telescopes and laser beam expanders, the afocal optical system can also be used as a part of the imaging optical system. Especially in the optical system that needs image motion compensation or image stabilization, the zoom effect of the afocal optical system on the beam is used, and a small-diameter flat mirror (ie, a fast mirror Fast Steering Mirror) is set between the afocal optical system and the imaging optical system. The relative motion between the target and the image during the exposure period of the detector is eliminated by fast mirror rotation, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B17/06
CPCG02B17/0647
Inventor 张新史广维张建萍王灵杰
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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