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Total reflection type afocal optical system

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

Active Publication Date: 2020-07-03
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Total reflection type afocal optical system
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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 invention relates to the technical field of optical imaging, and concretely relates to a total-reflection afocal optical system. The system comprises a first optical path module and a second optical path module which are sequentially arranged along an optical path, the first optical path module comprises a first reflector and a second reflector which are sequentially arranged along the opticalpath, and the second optical path module comprises a third reflector and a fourth reflector which are sequentially arranged along the optical path. According to the system, four reflectors are adopted and all are reflective elements, and light rays of different wave bands can be received without generating chromatic aberration, so the advantages of multiple wavebands and common caliber are achieved; and the four reflectors form the non-coaxial optical system, and incident parallel wide light beams are compressed into parallel thin light beams, so secondary blocking of light rays is avoided, the confocal condition is met, the small imaging distortion characteristic is achieved, the structure is compact, and the adaptability is good.

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 Applications(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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