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Solar adaptive optical system based on composite Shack-Hartmann wave-front sensor

A technology of adaptive optics and wavefront sensors, applied in optics, optical components, instruments, etc., can solve the problem of limited spatial sampling rate of adaptive optics system, and achieve the effect of expanding the scope of application

Inactive Publication Date: 2015-07-01
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The technical problem to be solved in the present invention is to propose a solar adaptive optical system based on a composite Shaker-Hartmann wavefront sensor for the problem of limited spatial sampling rate of the adaptive optical system in solar observation

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  • Solar adaptive optical system based on composite Shack-Hartmann wave-front sensor
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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Such as figure 1 As shown, the present invention includes a collimating mirror 1, a first reflecting mirror 2, an oblique wavefront corrector 3, a high-order wavefront corrector 4, an optical matching mirror 5, a beam splitter 6, and a composite Shaker-Hartmann wavefront sensor 7. The second mirror 8 , the fine tracking wavefront sensor 9 and the wavefront controller 10 . The collimating mirror 1 collimates the light coming from the telescope into a suitable aperture, and ensures that the high-order wavefront corrector 4 is located at the conjugate position of the pupil plane; the collimated light is reflected by the first mirror 2 to the inclined wavefront corrector 3 After being combined with the high-order wavefront corrector 4, the beam is shrunk by the optical matching mirror 5 to meet the requirements of the back-end optical syste...

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Abstract

The invention discloses a solar adaptive optical system based on a composite Shack-Hartmann wave-front sensor. The system comprises a tilting mirror, a deformable mirror, an accurate-tracking wave-front sensor, the composite Shack-Hartmann wave-front sensor and a wave-front controller. The composite Shack-Hartmann wave-front sensor comprises two sets of micro lens arrays and can select the micro lens array with the corresponding sub-aperture number to perform wave-front detecting and correcting according to atmospheric turbulences of different intensities and different detecting beacons. When the atmospheric turbulences are weak, solar granulation is used as the detecting beacon, and the micro lens array with less sub-aperture is selected to perform wave-front detecting; when the atmospheric turbulences are strong, macula is used as the detecting beacon, and the micro lens array with more sub-aperture is selected to perform wave-front detecting. The solar adaptive optical system has the advantages that the performance of the solar adaptive optical system is increased without increasing hardware complexity, and system application range is expanded.

Description

technical field [0001] The invention relates to a solar adaptive optical system, in particular to a solar adaptive optical system based on a composite Shaker-Hartmann wavefront sensor. Background technique [0002] High-resolution imaging observation of the solar atmosphere is an important part of solar physics research, and the solar adaptive optics system has become the standard equipment for ground-based large-aperture solar telescopes. Unlike night astronomical adaptive optics systems, solar adaptive optics systems require wavefront detection of low-contrast extended targets on the solar surface, such as sunspots in solar active regions and rice grains in quiet regions, using correlated Shack-Hartmann wavefront sensors Tissues, etc., especially the granule tissue, cover the entire surface of the sun's quiet zone. [0003] The wavefront detection accuracy of the solar adaptive optics system is affected by two aspects: atmospheric turbulence and the spatial sampling rate ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/00G02B27/10
CPCG02B27/0025G02B27/00G02B27/10
Inventor 饶长辉张兰强饶学军朱磊杨金生顾乃庭鲍华
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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