Wavefront sensor used for solar self-adaptive optical system

Abstract

The invention provides a wavefront sensor used for a solar self-adaptive optical system. The wavefront sensor comprises a collimator (1), a narrow-band light filter (2), a sampling reflector (3), a relay system (4), a beam expander (5), an attenuator (6), a phase shifter (7), an acquisition device (8) and a data processing module (9), wherein the solar radiation intensity uniformity and half-wave loss phase shift principle are utilized, and the defects that in a traditional solar self-adaptive optical system, a relevant Hartmann-shank wavefront detection technique is low in detection space resolution, low in long-scale contrast expansion object wavefront detection precision, large in wavefront detection calculation quantity, relatively lower in efficiency and the like are overcome. The wavefront sensor is simple in optical structure, small in calculation quantity, rapid in wavefront detection and processing speed, high in detection efficiency and not high in contract requirements on objects on a sun surface action area, and thus the wavefront sensor can be used for wavefront measurement on long-scale contrast expansion objects under the condition of middle and even low poor seeing degree condition, the correction bandwidth of the solar self-adaptive optical system is effectively improved, the working interval is expanded, and the correction effect is improved.

Description

technical field [0001] The invention mainly relates to the wavefront detection technology in the solar adaptive optics system, and in particular to the new wavefront detection technology based on the interference principle in the solar adaptive optics system, and provides a wavefront sensor for the solar adaptive optics system. Background technique [0002] The solar adaptive optics system is one of the necessary means for the vast majority of solar telescopes at home and abroad, especially the large-aperture solar telescopes, to successfully observe the active regions on the sun's surface. The theoretical resolution of a solar telescope for observation of the solar surface is related to its observation aperture. Qualitatively speaking, the larger the aperture of the solar telescope, the higher the corresponding observation resolution. For the observation of solar active regions, the observation of activity rules at smaller spatial scales provides a basis for researchers to ...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: in order to overcome the insufficiency of the correlative Hartmann-Shack wavefront sensor in the traditional solar adaptive optics system to the low-contrast extended target wavefront detection capability, and at the same time solve The continuous increase of the number of correction units in the adaptive optics system brings problems such as large amount of calculation and low efficiency of wavefront detection

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