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Device for detecting wave front of large-aperture optical system

An optical system and detection device technology, which is applied in the direction of testing optical performance, etc., can solve problems such as safety risks, complex mechanical structures, and difficult adjustments, and achieve the effects of easy removal, high detection accuracy, and high precision

Inactive Publication Date: 2012-06-20
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0007] The technical problem solved by the present invention is: to overcome the existing wavefront detection technology of large aperture optical system, which has high cost, complex mechanical structure, difficult adjustment, low precision and safety risk

Method used

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  • Device for detecting wave front of large-aperture optical system
  • Device for detecting wave front of large-aperture optical system
  • Device for detecting wave front of large-aperture optical system

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0025] Such as figure 1 Shown is a schematic diagram of the structure of the device for detecting the wavefront of the large-aperture optical system. It includes an interferometer 1, a five-dimensional adjustment table 2, a standard self-collimating flat mirror 4, a numerical control electric displacement table 5, a numerical control turntable 6, a computer control and data processing system 7, and a two-dimensional adjustment frame 8. ,in:

[0026] The interferometer 1 is located on the five-dimensional adjustment table 2, and the large-aperture optical system 3 is placed between the interferometer 1 and the standard self-collimating flat mirror 4. The light emitted by the interferometer 1 reaches the standard self-coll...

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Abstract

The invention relates to a device for detecting the wave front of a large-aperture optical system. The device comprises an interferometer, a five-dimensional adjustment platform, a numerical-control turntable, a numerical-control electric displacement platform, a self-collimation standard plane mirror, a two-dimensional adjustment rack and a computer control and data processing system. The device is characterized in that: the wave front of the large-aperture optical system is divided into a plurality of sub-aperture wave fronts, the interferometer and the self-collimation standard plane mirror detect the sub-aperture wave fronts of the large-aperture optical system, the numerical-control turntable and the numerical-control electric displacement platform control the standard plane mirror to move so as to scan the sub-aperture wave fronts, the interferometer detects and records the sub-aperture wave fronts, so that the detected sub-aperture wave fronts cover the whole large-aperture optical system; and the computer control and data processing system stitches the sub-aperture wave fronts through algorithms, so that the full-aperture wave front of the large-aperture optical system is obtained, and the detection on the wave front of the large-aperture optical system is finished. The device has the advantages of simple structure, low cost and capability of detecting the image quality of the wave front of a large-aperture optical system with the aperture of not less than 1000 mm.

Description

technical field [0001] The invention relates to a detection device for a wave front of a large-diameter optical system, in particular to a device for detecting the wave front of a large-diameter (≥1000mm) optical system. Background technique [0002] The performance and quality of the optical system can be quantitatively described by the wavefront aberration value of the optical system and its RMS value. Therefore, it is necessary to detect the wavefront of the optical system when it is installed and adjusted. The traditional wavefront detection method of the optical system adopts the self-collimation method. (≥1000mm), large-aperture standard flat mirrors have long manufacturing cycle, high cost, difficult adjustment and safety risks in transportation, so the traditional autocollimation method is not suitable for detecting the wavefront of large-aperture optical systems. [0003] Zhang Wei and Cao Yiping proposed to use Shack-Hartmann as the wavefront sensor, combined with...

Claims

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Application Information

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IPC IPC(8): G01M11/02
Inventor 汪利华杨伟
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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