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High-resolution optical system based on catadioptric spliced primary mirror

An optical system and high-resolution technology, applied in the field of high-resolution optical systems, can solve problems such as not being able to meet the requirements of a high field of view, and achieve the effect of increasing the size of the field of view and high-resolution imaging

Pending Publication Date: 2021-10-29
XIAN AERONAUTICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above optical systems still have deficiencies in the field of view and cannot meet the requirements of high field of view.

Method used

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  • High-resolution optical system based on catadioptric spliced primary mirror
  • High-resolution optical system based on catadioptric spliced primary mirror
  • High-resolution optical system based on catadioptric spliced primary mirror

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Embodiment 1

[0046] Such as figure 1 As shown, it is a structural schematic diagram of the optical system of the present invention. The main mirror of the system is spliced ​​by 18 small-sized sub-mirrors, and the positions of each sub-mirror are independent from each other. Combined with the analysis of the influence of the aberration of the whole system on the imaging quality of the system .

[0047] The focal length of the optical system provided in this embodiment is 32 m, the field of view is 0.8°×0.8°, the image distance of the detector is 7 μm, and the aperture of the system is 3 m. Such as image 3 and Figure 4 As shown, the RMS value generated by the system is 0.0067λ, which meets the minimum standard of 0.05λ for perfect imaging of the system; the size of the generated image point is about 2μm, and the size is small; in the visible light to near-infrared band, within the full field of view The MTF is close to the diffraction limit, and the size of the formed wavefront is sma...

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Abstract

The invention provides a high-resolution optical system based on a catadioptric spliced primary mirror, relates to the technical field of optical imaging, and aims to improve the field of view of a large-aperture reflective optical system and obtain a high-resolution image with a larger field of view. The system is sequentially provided with a first splicing reflecting primary mirror, a second reflecting mirror, a first refractor and a second refractor in the light propagation direction. The first splicing reflecting primary mirror and the second reflecting mirror are oppositely arranged, and the first refractor and the second refractor are both arranged on the outer side of the first splicing reflecting primary mirror; a rectangular view field is adopted; the filling factor of the first splicing reflection primary mirror is smaller than 1, the effective aperture is smaller than 3 m, and the view field size of the optical system is 0.8 degree * 0.8 degree. The technical scheme provided by the invention is suitable for the optical imaging process.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to a high-resolution optical system based on catadioptric splicing primary mirrors. Background technique [0002] In order to improve the resolution of the optical system, it is necessary to increase the clear aperture of the system. With the deepening of human exploration, the demand for large-aperture optical systems is becoming more and more urgent, so the research on large-aperture optical systems will be an important direction in the future. [0003] As for the design of ultra-large aperture, limited by factors such as mirror material, processing technology, spacecraft carrying capacity, launch volume, etc., the design concept of traditional optical telescopes with a single aperture as the main body has been difficult to support the needs of increasing the aperture of space telescopes. Therefore, the form of large-aperture reflective primary mirror obtained by splicing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B17/08G02B17/00G02B27/00
CPCG02B17/08G02B17/002G02B27/0025
Inventor 张蕾王臣臣谢远田晓任俊鹏
Owner XIAN AERONAUTICAL UNIV
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