Field cut-off optical synthesis aperture imaging system

Abstract

The present invention relates to a field cut-off optical synthesis aperture imaging system comprises a main mirror and a second mirror on a convergent optical path of the main mirror, wherein the main mirror is a flat mirror array composed of flat mirrors with small calibers; the second mirror comprises an imaging mirror, a collimating micro lens array and a collecting mirror which are verticallyarranged on the same optical shaft in turn; the focus position of the imaging mirror and a position which is parallel to the imaging mirror form a once image surface; the focus position of the collecting mirror and a position which is parallel to the collecting mirror form a twice image surface; and the once image surface and the twice image surface are both at one exit side of an optical path. The present invention solves the technical problems of poor material uniformity, and inconvenient processing and assembly of an optical system with a large caliber in the background art, and has the advantages of simple structure, convenient use and the like.

Description

technical field [0001] The invention relates to an optical imaging method and equipment, a high-resolution optical imaging method and equipment. In particular, it relates to a field-of-view division type optical synthetic aperture imaging system. Background technique [0002] Optical imaging systems have been widely used at present. At the same time, there are corresponding research and development of optical systems using the principle of synthetic aperture. Traditional optical high-resolution imaging systems require the optical system to be designed as a large-aperture single-chip primary mirror and secondary mirror optical system. Due to The resolution of the optical system required by aerospace, earth observation and astronomical observation is getting higher and higher, so the aperture of the optical system is required to be larger and larger, see figure 1 At present, the large-aperture optical system has encountered great difficulties in a series of implementation lin...

AI Technical Summary

Problems solved by technology

[0002] Optical imaging systems have been widely used at present. At the same time, there are corresponding research and development of optical systems using the principle of synthetic aperture. Traditional optical high-resolution imaging systems require the optical system to be designed as a large-aperture single-chip primary mirror and secondary mirror optical system. Due to The resolution of the optical system required by aerospace, earth observation and astronomical observation is getting higher and higher, so the aperture of the optical system is required to be larger and larger, see figure 1 At present, the large-aperture optical system has encountered great difficulties in a series of implementation links such as material uniformity, structural strength, processing, and assembly.

Therefore, people began to turn to splicing small-diameter lenses to synthesize a large-diameter optical system primary mirror, but the current technology requires that the small-diameter lenses must have the same curvature and aspheric surface type as the large-diameter lenses to be spliced. , which determines that small-caliber lenses have different surface shapes at different positions, so some difficulties will also be encountered when processing these small-caliber lenses, and the cost is very high

[0003] In foreign countries, there is an optical synthetic aperture optical system composed of multiple telescopes to form an array telescope. It is also very large in structure and the production cost is surprisingly high.

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