Wavefront sensing method, device and system for large-view-field active optical telescope

A technology of wavefront sensing and telescopes, applied in measuring devices, measuring optics, optical radiation measurement, etc., can solve the problems of increasing measurement accuracy, difficult cost control, and unfavorable improvement of wavefront sensing detection accuracy, etc. Disturbance, small amount of data, and fast detection speed

CN110274696AActive Publication Date: 2019-09-24CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-09-24

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Abstract

The embodiment of the invention discloses a wavefront sensing method, device, device and system for a large-view-field active optical telescope and a computer readable storage medium. The method comprises the following steps: calculating low-order wavefront information of each star point in a focal plane out-of-focus image of a telescope by utilizing a DOUNT rapid algorithm, wherein the out-of-focus image of the focal plane is acquired by an image sensor in a long exposure and initial out-of-focus amount state in the moving process of the edge of the field of view of the telescope; if the low-order wavefront aberration of each star point is discontinuous, generating a defocusing amount adjustment instruction according to a preset adjustment amplitude; when the detection telescope automatically increases the defocusing amount on the basis of the initial defocusing amount according to the adjustment amplitude, sending an instruction of re-collecting the out-of-focus image of the focal plane; and finally, obtaining wavefront information of the telescope according to the continuous focal plane out-of-focus image of the low-order wavefront aberration of each star point. According to the invention, the detection precision of telescope wavefront sensing can be effectively improved.
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Description

technical field

[0001] Embodiments of the present invention relate to the technical field of wavefront sensing and detection, and in particular to a wavefront sensing method, device, equipment, system and computer-readable storage medium for a large field of view active optical telescope. Background technique

[0002] With the rapid development of large aperture and large field of view telescopes and aerospace technology, in order to obtain higher sky survey efficiency and light collection ability, the aperture and field of view of the telescope are constantly expanding. Active optics, as the key technology of large aperture and large field of view telescopes, has been widely used. In order to further develop the detection capability of the large-aperture and large-field telescope, the independent and real-time surface correction and attitude control of each main component in the telescope through active optics can not only reduce the requirements for optical processing and ...

Examples

Embodiment Construction

[0047] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] The terms "first", "second", "third" and "fourth" in the specification and claims of this application and the above drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device compris...