Wave-aberration indoor detection method of large-caliber photoelectric detection system at different elevations

A photoelectric detection and detection method technology, which is applied in the direction of optical instrument testing, measuring devices, and testing optical performance, etc., can solve the problems of medium and high frequency part measurement error, instrument volume, weight increase, and tilt error are difficult to control, and achieve accuracy and repeatability High performance, improve measurement accuracy, increase the effect of sampling density

CN105571833AActive Publication Date: 2016-05-11CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-05-11

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Abstract

The invention relates to a wave-aberration indoor detection method of a large-caliber photoelectric detection system at different elevations. An objective target plate and illumination system, a small-caliber collimating optical system with a variable diaphragm, a first turning beam-splitting prism, a second turning beam-splitting prism, a measuring head third turning beam-splitting prism, a measuring head first beam-splitting prism, a second beam-splitting prism, a first photoelectric auto-collimator, a third beam-splitting prism and a second photoelectric auto-collimator are successively arranged on a detection optical path. According to the technical scheme of the invention, the wave-aberration indoor detection method of the large-caliber photoelectric detection system at different elevations is mainly used for detecting the wave aberration of the large-caliber photoelectric detection system at different elevations. In this way, the imaging quality at different elevations and the stability quantitative assessment thereof are realized.
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Description

technical field

[0001] The invention belongs to the field of optical detection and optical measurement, in particular to an indoor detection method of wave aberration under different elevation angles of a large-diameter photoelectric detection system. Background technique

[0002] With the continuous increase of the aperture of the main optical system in the ground-based photoelectric detection system, the change of the elevation angle of the large-aperture main optical system during the tracking and imaging process of the photoelectric detection system will have a greater impact on the stability of its optical performance. Relevant simulations and experiments show that when the aperture of the optical system is close to 3m, the surface shape change caused by the elevation angle changing from horizontal (0°) to zenith (90°) is about λ / 11 (RMS, λ=632.8nm), The defocus caused by the change of elevation angle exceeds 17mm, and the dynamic pointing error of the optical axis exce...

Examples

Embodiment Construction

[0055] The indoor detection method of the wave aberration under different elevation angles of the large-aperture photoelectric detection system of the present invention specifically proposes: (1) adopting a polygonal mirror scanning system to realize the technical scheme of sub-aperture scanning; (2) improving the sub-aperture absolute slope measurement to relative slope measurement (3) design an integrated sub-aperture two-dimensional tilt error monitoring optical path; (4) the present invention can also effectively realize the light weight of the measuring equipment, and based on this, it is proposed that the testing equipment and the photoelectric detection system to be tested are fixedly connected and used to utilize Its pitch axis system provides technical solutions for different elevation angles. At present, we have developed a principle verification test device, and have actually verified the effectiveness of the above-mentioned content of the invention through experimen...