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Cassegrain system primary and secondary mirror optical axis consistency debugging method

A debugging method, Cassegrain's technology, applied in optics, optical components, instruments, etc., can solve problems such as expensive debugging equipment and complicated debugging methods

Pending Publication Date: 2021-05-28
西安应用光学研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the adjustment of the Cassegrain system at home and abroad is mainly through the centering turning method, the three-coordinate measurement centering method, the computer-aided method, the centering method of the center deviation measuring instrument, etc., and the debugging equipment is expensive. , the debugging method is complex

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  • Cassegrain system primary and secondary mirror optical axis consistency debugging method
  • Cassegrain system primary and secondary mirror optical axis consistency debugging method
  • Cassegrain system primary and secondary mirror optical axis consistency debugging method

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Embodiment Construction

[0023] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] The method for debugging the optical axis consistency of the primary and secondary mirrors of the Cassegrain system proposed in this embodiment includes the following steps:

[0025] Step 1: Arrange the inner focusing telescope A3 on the reflective surface of the main mirror 1 to calibrate the optical axis of the main mirror 1

[0026] refer to figure 1 As shown, the primary mirror optical axis calibration process is as follows:

[0027] Step 1.1: Place the main mirror 1 vertically, and set up an inner focusing telescope A3 facing the reflecting surface of the main mirror 1. It is required that the height of the optical axis of the inner focusing telescope A3 is basically the same as the height of the center o...

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Abstract

The invention discloses a Cassegrain system primary and secondary mirror optical axis consistency debugging method which utilizes a large-aperture collimator, an internal focusing telescope and a standard ball to realize Cassegrain system primary mirror and secondary mirror optical axis consistency debugging by using an auto-collimation method. An advantage is that the standard ball whose diameter is the same as that of the central hole of the primary mirror is used, a primary mirror optical axis is explicitly expressed through a primary mirror center hole with high coaxial precision. The standard ball is arranged in a central hole of the primary mirror, the center of the standard ball is located on the axis of the central hole of the primary mirror, the curvature center of the reflecting surface of the primary mirror and the center of the standard ball are subjected to auto-collimation through the focusing function of an internal focusing telescope, a curvature center image and a standard ball center image are located on the optical axis of the internal focusing telescope at the same time, and the optical axis of the internal focusing telescope is the optical axis of the primary mirror. And the position of the secondary mirror is adjusted to enable the optical axis of the secondary mirror to be coaxial with the optical axis of the internal focusing telescope to complete primary and secondary mirror optical axis consistency debugging. According to the method, the assembling efficiency and the adjusting quality of the optical axis consistency of the Cassegrain system can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of optical machine assembly and adjustment, and relates to a method for debugging the consistency of optical axes of primary and secondary mirrors of a Cassegrain system. Background technique [0002] The Cassegrain system consists of two mirrors, the primary mirror is a concave aspheric surface, and the secondary mirror is a convex aspheric surface. The axes of the two mirrors are arranged on the optical axis. The center of the mirror surface of the primary mirror has a hole to allow light to pass through. . Due to the particularity of its structure, the optical axis cannot be determined by a single reflective surface, resulting in the phenomenon that the outgoing optical axis of the product deviates from the theoretical design position during the debugging process, which will affect the subsequent installation and adjustment of the optical system in severe cases; at the same time, in the During the assemb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/30G02B27/32
CPCG02B27/30G02B27/32
Inventor 张向明赵红军马力赵玮张小强杨熊杜萌管伟
Owner 西安应用光学研究所
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