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Optical axis marking and alignment device

An alignment device and marking technology, applied in the direction of testing optical performance, geometric characteristics/aberration measurement, etc., can solve problems such as the reduction of the Strehl ratio of the converging focus, and achieve the effect of compact and simple structure

Pending Publication Date: 2022-03-04
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

For example, an off-axis parabolic mirror, a small angle deviation will lead to a serious decrease in the Strehl ratio of the converging focal point of the incident parallel beam

Method used

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  • Optical axis marking and alignment device

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0016] figure 1 It is a schematic diagram of the optical axis marking and alignment device of the present invention. As can be seen from the figure, the optical axis marking and alignment device of the present invention consists of a collimated light source 1, a beam splitter 2, a corner cube prism 3, and a near-far field observation system 4. After the collimated light source 1 is transmitted by the beam splitter 2 , it enters the corner cube prism 3 as an incident light beam 101 . Part of the light is reflected by the corner cube surface 301 to become the first return beam 102 , and enters the near-far field observation system 4 after being reflected by the beam splitter 2 . Another part of light passes through the corner cube surface 301 and becomes the inside incident ...

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Abstract

An optical axis marking and aligning device comprises a collimation light source, a cube-corner prism, a spectroscope and a near-far field observation system. The collimated light source is internally reflected by the cube-corner prism, the reflected light represents the optical axis of the collimated light beam, and the light beam reflected by the incident surface of the cube-corner prism represents the posture of the cube-corner. The position and direction of the reference optical axis are marked through the cube-corner prism, and the angular deviation between the incident optical axis and the reference optical axis and the transverse translation deviation between the incident beam position and the vertex of the cube-corner are determined through the near-far field observation system.

Description

technical field [0001] The invention relates to beam pointing control, in particular to an optical axis marking and alignment device. Background technique [0002] In many cases, the operating characteristics of optical components or systems are closely related to the position and angle of the incident beam. A small pointing deviation will lead to deviation from the target on the target surface of the beam after long-distance transmission. Minor translational deviations on the lens surface can also cause off-targets on the target plane on which the beam acts. With the development of optical engineering technology, it is necessary to strictly control the position and attitude of the incident light beam in some special applications. For example, an off-axis parabolic mirror, a small angle deviation will lead to a serious decrease in the Strehl ratio of the converging focal point of the incident parallel beam. [0003] The corner cube prism, also known as the retroreflector,...

Claims

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Application Information

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IPC IPC(8): G01M11/02
CPCG01M11/0242
Inventor 唐顺兴朱健强李学春朱宝强杨朋千郭亚晶姜秀青宗楠
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI