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Auxiliary adjustment method for large-aperture optical element

A technology of optical components and adjustment methods, which is applied in the direction of optical components, optics, instruments, etc., can solve problems such as the inability to achieve wavelength-level measurement, achieve good versatility, and achieve the effect of precision adjustment

Active Publication Date: 2021-03-26
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing installation and adjustment methods cannot achieve wavelength-level measurement, the present invention starts from the screw theory and utilizes the spatial movement function of the mechanical arm to move the wavefront to be detected to the required position

Method used

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  • Auxiliary adjustment method for large-aperture optical element
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  • Auxiliary adjustment method for large-aperture optical element

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0044] In the present invention, the use of unilateral out-of-focus star point images can avoid the problem of low system installation and adjustment efficiency caused by the use of two-way acquisition of in-focus images and out-of-focus images;

[0045] Using curvature sensing, a non-interfering, non-iterative wavefront detection method, has a very good boost to the real-time performance of the shaking control of the manipulator in practical applications; in addition, its accuracy is better than the positioning accuracy of the manipulator, so using curvature sensing The sensor can rea...

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Abstract

The invention provides an auxiliary adjustment method for a large-aperture optical element. Curvature sensing is selected by comparing various wavefront sensing modes, and the wavefront correction andfeedback is carried out through a non-interference non-iteration wavefront detection means; and the multi-degree-of-freedom and iterative spatial motion function of a mechanical arm is combined. Themovement amount of the mechanical arm is calculated by utilizing the mapping relationship between the aberration space and the joint space of the mechanical arm and combining a sensitivity matrix, sothat the large-dynamic-range and high-precision speed measurement adjustment of a large-aperture optical element is realized.

Description

technical field [0001] The invention relates to the field of large-diameter optical element assembly and adjustment, in particular to an auxiliary assembly method for large-diameter optical elements. Background technique [0002] The vigorous development of robotics has greatly enriched the processing and assembly methods of large-aperture telescopes. No matter in the ground laboratory or in space, robots have taken on more and more assembly and inspection tasks. Generally speaking, simple reciprocating motions such as push-out and push-in are mostly used for lens adjustment, and the degree of freedom in adjustment is small. Although this method is stable and easy to control, it is large in size, poor in versatility, and cannot be used for various complex movements. Scenarios, it cannot be applied to system design where the actual deviation is greater than the initial state, and has limitations. [0003] The curvature sensor was proposed by Roddier in 1988. Unlike the wave...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/62
CPCG02B27/62
Inventor 安其昌吴小霞林旭东王建立陈涛李洪文
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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