Long-focus and high-resolution optical system

Abstract

The invention relates to a long-focus and high-resolution optical system which comprises a first reflector, a second reflector, a first negative refraction mirror, a third reflector, a first positive refraction mirror, a second positive refraction mirror, a second negative refraction mirror, a third negative refraction mirror, a fourth reflector, a fourth negative refraction mirror and an image surface which are arranged on the same optical path in sequence. The long-focus and high-resolution optical system has the advantages that the application range is wide, long focus and high resolution can be achieved, the structure of the whole system is compact, machining and detection are easy, and imaging quality approximates to diffraction limit.

Description

technical field [0001] The field of optoelectronic technology of the present invention specifically relates to a long focal length and high resolution optical system, in particular to a long focal length and high resolution optical system suitable for a space environment and used in an aerospace non-cooperative target detection system. Background technique [0002] The spatial resolution of the space optical system is related to the relative aperture of the optical system. When the optical system has a certain aperture, increasing the focal length can improve the system resolution, and increasing the field of view of the system can expand the coverage width of the ground. From the above analysis and requirements, the long focal length is beneficial to improve the performance of the space optical system. For high-resolution optical systems with long focal lengths, when using a transmission structure, the aperture of the lens is made very large. Since large-diameter transmissi...

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Problems solved by technology

[0004] In order to avoid the deficiencies of the prior art, the present invention proposes a long-focus high-resolution optical system, which is a modified Cassegrain catadioptric structure with compact structure and excellent imaging quality, which is suitable for space long-focus optical systems and solves the problem of The existing long focal length and high resolution optical system is difficult to manufacture, process and inspect, the whole system is long, and the installation and adjustment are difficult

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