Research of the wavefront detection method based on the scanning pentaprism

Xueliang Zhu; Huiying Zhao; Longchao Dong; Ailing Tian; Daocheng Yuan; Xinxing Ban; Bingcai Liu; Yanan Tian

doi:10.1117/12.2257394

28 February 2017 Research of the wavefront detection method based on the scanning pentaprism

Xueliang Zhu, Huiying Zhao, Longchao Dong, Ailing Tian, Daocheng Yuan, Xinxing Ban, Bingcai Liu, Yanan Tian

Proceedings Volume 10256, Second International Conference on Photonics and Optical Engineering; 1025627 (2017) https://doi.org/10.1117/12.2257394
Event: Second International Conference on Photonics and Optical Engineering, 2016, Xi'an, China

Abstract

With the rapid developing of science and technology, large aperture optical system plays an important role in the hightech fields including space optics, astronomical optics, inertial confinement fusion, the detecting and recognizing of space target. However, the problems of the wavefront sensing about large aperture optical system has been totally solved because of the equipment expenses and long manufacturing periods. In order to test the large aperture elements in optical system with cheaper costs and higher resolution, more and more attentions are paid into the wavefront sensing of large aperture optical systems. The scanning pentaprism system is introduced to divide the wavefront of the interferometer into a series of sub-wavefront, and the relative positions of the spot centroid accroding to every sub-wavefront are recorded on the CCD camera. The normal directions of every sub-wavefront are obtained to reconstruct the tested wavefront. Experimental results are accord with the interferometer measure results. The feasibility of the pentaprism scanning method has been validated. Finally the influences of measurement apparatus and environment on the measuring precision is discussed. Which is useful to expand the measuring range to keep high spatial resolution and reduce cost.

Citation Download Citation

Xueliang Zhu, Huiying Zhao, Longchao Dong, Ailing Tian, Daocheng Yuan, Xinxing Ban, Bingcai Liu, and Yanan Tian "Research of the wavefront detection method based on the scanning pentaprism", Proc. SPIE 10256, Second International Conference on Photonics and Optical Engineering, 1025627 (28 February 2017); https://doi.org/10.1117/12.2257394

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KEYWORDS

Wavefronts

Astronomical imaging

Wavefront sensors

Collimation

Detection and tracking algorithms

Optical components

Optical testing

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