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Large-aperture long-focal-length optical axis parallelism measuring system and measuring method thereof

A technology with parallel optical axis and measurement system, applied in the field of optical detection, to achieve the effects of high precision, long structural focal length and convenient image processing

Active Publication Date: 2022-03-22
HEFEI UNIV OF TECH
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  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a measuring system and measuring method for the parallelism of the optical axis with a large aperture and a long focal length, so as to solve the above defects

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  • Large-aperture long-focal-length optical axis parallelism measuring system and measuring method thereof
  • Large-aperture long-focal-length optical axis parallelism measuring system and measuring method thereof
  • Large-aperture long-focal-length optical axis parallelism measuring system and measuring method thereof

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Embodiment Construction

[0050] Conjunction with the accompanying Figure 1-10 , Specific embodiments of the present invention is described as follows:

[0051] Such as Figure 1-6 , The long axis parallel to the focal length of a large diameter measurement system, comprising: 1, 2 standard plane mirror, off-axis parabolic primary mirror 3, a hyperboloidal secondary mirror 4, a first dichroic mirror five dimensional precision adjustment bracket 5, the interferometer 6, a second beam splitter 7, a third dichroic mirror 8, a laser 9, the integrating sphere 10, a first optical wedge 11, a second wedge 12, CCD camera 13 and the computer 14. Standard plane mirror 2 is mounted on a five-dimensional precision adjustment bracket 1, five-dimensional precision accuracy adjustment bracket 1 is 1urad; standard flat mirror 2 Surface Accuracy of λ / 60; 4D interferometer is the interferometer 6, measurement accuracy of λ / 100.

[0052] 3 off-axis parabolic primary mirror, the secondary mirror hyperboloid 4, a first dich...

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Abstract

The invention discloses a system for measuring parallelism of a large-aperture long-focal-length optical axis. The system comprises a high-precision five-dimensional adjusting frame, a standard plane mirror, an off-axis paraboloid primary mirror, a hyperboloid secondary mirror, a first spectroscope, an interferometer, a second spectroscope, a third spectroscope, a laser, an integrating sphere, a first optical wedge, a second optical wedge, a CCD camera and a computer. The off-axis paraboloid primary mirror, the hyperboloid secondary mirror and the first spectroscope form an off-axis clamping type collimator device; and the second spectroscope, the first optical wedge, the second optical wedge, the CCD camera and the computer form a CCD branch. The invention further discloses a detection method of the large-aperture long-focal-length optical axis parallelism measurement system. The invention not only has the advantages of large aperture, no central obscuration, high transmittance and good image quality, but also has the advantages of small system focal length limitation, accurate reference system axis selection, better correction of off-axis phase difference, high measurement precision and simple and convenient operation.

Description

Technical field [0001] The present invention relates to the field of optical detection, and is specifically a measurement system of a large diameter long focal length optical axis and its measurement method thereof. Background technique [0002] The optical axis is one of the most important indicator parameters in all optical devices, and only ensures that each optical axis parallelism is within a certain accuracy, the accuracy of the optical device parameter information can be guaranteed. In order to maximize the efficiency of optical equipment, in addition to the design, processing and overall assembly of the components, the measurement of the optical axis is particularly important. At present, the commonly used optical axis parallelial measurement methods are mainly: projection target, laser phase paper detection, five prism, small diameter parallel light pipe method and large diameter parallel light pipe method. [0003] The projection target method and the laser phase paper ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/02G02B7/182G02B7/198
CPCG01M11/02G01M11/0207G01M11/0221G02B7/1821G02B7/198
Inventor 胡明勇陈光宇杨传龙
Owner HEFEI UNIV OF TECH
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