Experimental study on the measurement of convex hyperbolic mirrors with Hindle and stitching methods

Fengtao Yan; Bin Fan; Xi Hou; Fan Wu; Baiping Lei

doi:10.1117/12.2185697

17 July 2015 Experimental study on the measurement of convex hyperbolic mirrors with Hindle and stitching methods

Fengtao Yan, Bin Fan, Xi Hou, Fan Wu, Baiping Lei

Proceedings Volume 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015); 95240A (2015) https://doi.org/10.1117/12.2185697
Event: International Conference on Optical and Photonic Engineering (icOPEN2015), 2015, Singapore, Singapore

Abstract

It is a difficult work to measure the large convex surfaces. However, as the secondary mirrors, the convex aspheric surfaces have been to several meters in diameter to meet the giant telescope. In this paper, the method for testing the large convex hyperbolic mirror with Hindle and stitching methods were introduced. Two experimental demonstrations were provided by testing a convex hyperbolic. The first experiment for testing the convex hyperbolic mirror is 8 subapertures testing in one ring. In the secondary experiment, the convex hyperbolic mirror was divided into two rings to be tested. By comparing the results of this testing method with the QED measurement results, it is shown that the both of the stitching results are in good agreement with the QED measurement results.

Citation Download Citation

Fengtao Yan, Bin Fan, Xi Hou, Fan Wu, and Baiping Lei "Experimental study on the measurement of convex hyperbolic mirrors with Hindle and stitching methods", Proc. SPIE 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015), 95240A (17 July 2015); https://doi.org/10.1117/12.2185697

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