System and method for detecting divided ring belts of ultra-large-aperture convex hyperboloidal mirror

Abstract

The invention discloses a system and a method for detecting divided ring belts of an ultra-large-aperture convex hyperboloidal mirror. The system comprises a phase shift interferer, two Hindle spherical reflecting mirrors, the measured ultra-large-aperture convex hyperboloidal mirror and a computer system, wherein the computer system is connected with the phase shift interferer; zero detection of the ultra-large-aperture convex hyperboloidal mirror is realized by the two Hindle spherical reflecting mirrors; phase shift interferer data processing software on the computer system extracts sub-aperture phase data and regulates the opposite position of the measured ultra-large-aperture convex hyperboloidal mirror and the two Hindle spherical reflecting mirrors; full aperture detection of the measured ultra-large-aperture convex hyperboloidal mirror is realized, high-accuracy splicing is realized due to enough overlapped area of the adjacent sub-apertures; and sub-aperture test data which are obtained are sent into the computer system for splicing processing, and the surface shape information of the measured ultra-large-aperture convex hyperboloidal mirror is obtained. The invention provides an effective and low-cost detection way for research of the ultra-large-aperture convex hyperboloidal mirror and has high application value.

Description

technical field [0001] The invention belongs to the field of advanced optical manufacturing and detection, and relates to an optical detection system, in particular to a super-large diameter convex hyperboloid mirror sub-ring detection system and a detection method thereof. Background technique [0002] The two-mirror optical system with a convex hyperboloid mirror as the secondary mirror has been more and more widely used in the fields of astronomy and space optics, and with the development of astronomy and space optics, the diameter of the convex hyperboloid mirror required is increasing bigger. The manufacture of large-diameter convex hyperboloid mirrors requires corresponding detection technology. However, there are still huge challenges in the high-precision quantitative detection of large-diameter and super-large-diameter convex hyperboloid mirrors. [0003] In the polishing process of convex hyperboloid mirrors, the usual detection methods include the aberration meth...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the deficiencies of the existing detection technology, and propose a super-large-diameter convex hyperboloid mirror detection system based on the Hindle spherical mirror sub-area detection and sub-aperture splicing technology based on the sub-ring zone of the super-large-diameter convex hyperboloid mirror , the system utilizes a small-diameter standard spherical mirror that is easy to process and realize, which can effectively solve the problems of difficult manufacturing of auxiliary components, high cost, and high material uniformity in other detection methods. The invention has a simple structure and low detection cost

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