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A construction method for detecting optical path of small f-number convex hyperboloid reflector

A technology of hyperboloid mirrors and hyperboloid mirrors, which is applied in the field of optical inspection and can solve problems such as time-consuming

Active Publication Date: 2021-07-06
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, even experienced operators will spend a lot of time building a small F-number hyperboloid measurement and detection optical path

Method used

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  • A construction method for detecting optical path of small f-number convex hyperboloid reflector
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  • A construction method for detecting optical path of small f-number convex hyperboloid reflector

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Embodiment Construction

[0024] The technical solutions in the embodiments of the present invention will be clearly and systematically described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the embodiments described this time are only some of the embodiments of the present invention, 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 creative efforts are within the protection scope of the present invention. The method is described below by taking R=49.4mm, k=-2.235, a convex hyperboloid with a diameter of 40mm, and a spherical mirror with a radius of 80mm as an example.

[0025] Step 1: The front of the spherical mirror is processed into a concave surface, the back is processed into a flat surface, and polished, with a through hole in the center; two five-dimensional adjustment frames are prepared for the placement of the spherical mirror and the hyperbolic...

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Abstract

The invention relates to the field of optical detection, in particular to a method for building a detection optical path of a small F-number convex hyperboloid reflector. It solves the problem that the detection optical path of the traditional small F-number convex hyperboloid mirror is difficult to build. The invention utilizes the converging light spot to quickly make the optical axis of the interferometer and the hyperbolic mirror to be tested collinear, determine the exact position of the spherical mirror, and finally complete the construction of the detection optical path efficiently.

Description

technical field [0001] The invention belongs to the field of optical detection, and is a fast and efficient method for building a detection light path of a convex hyperboloid reflector. It solves the problem that the detection optical path of the traditional small F-number convex hyperboloid mirror is difficult to build. Background technique [0002] The Cassegrain system is an important reflective telescope system, the primary mirror is a concave paraboloid, and the secondary mirror is a convex hyperboloid. The small F multiple mirror can shorten the system length, make the structure more compact and save space. For the measurement of convex hyperboloid mirrors, the aberration-free method can be used to build the detection optical path. The smaller the F-number of the secondary mirror, the greater the impact of the deviation of the dimensions of the placement of the secondary mirror and the compensating spherical mirror on the image point. Therefore, even experienced ope...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/00G01M11/02
CPCG01M11/005G01M11/0271
Inventor 王哲徐学科朱小磊吴令奇方媛媛宋力
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI