Large caliber hyperboloid secondary mirror detecting system
A detection system and hyperboloid technology, applied in measurement devices, instruments, optical devices, etc., can solve the problems of high material uniformity requirements and complex detection system structure, avoiding harsh requirements, avoiding high costs, and reducing detection costs. and test the effect of the preparation cycle
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[0030] The present invention will be described in detail below with reference to the drawings and specific implementations.
[0031] Such as figure 1 As shown, a large-diameter hyperboloid secondary mirror detection system of this embodiment includes a phase shift interferometer 1, two symmetrically placed Hindle spherical block mirrors 2 and 4, a large-diameter hyperboloid secondary mirror under test 3, and a computer System 5, the computer system 5 is connected with the phase shift interferometer 1. The two Hindle spherical block mirrors 2 and 4 are used to realize the zero detection of the sub-aperture of the corresponding area outside the center of the hyperboloid secondary mirror, which is installed in the computer system 5. The phase shift interferometer data processing software on the above extracts the two sub-aperture phase data corresponding to the resolvable interference fringes, and relatively rotates the measured large-diameter hyperboloid secondary mirror 3 and the ...
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