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216 results about "Functional features" patented technology

Polarized point diffraction interferometer system for test of low-reflectivity optical spherical surfaces

The invention discloses a polarized point diffraction interferometry system for test of low-reflectivity optical spherical surfaces. As the reflectivity of the optical spherical surface is low in the actual polishing process, a high-precision interference test system needs to have the function of adjusting visibility of fringes to obtain the ideal visibility of interference fringes. The invention solves the problem of realizing adjusting the visibility of interference fringes while ensuring the test precision of the spherical surface. The invention is technically characterized by establishing the polarized point diffraction interferometer system capable of realizing adjusting the visibility of interference fringes by introducing a polarization optical element to adjust the polarization states of light beams based on a point diffraction interferometer system capable of realizing high-precision test; and putting forward corresponding structure design and system error correction methods by analyzing the function characteristics of each element in the interferometer system to realize high-precision test of the spherical surfaces. The invention provides a feasible method for high-precision test of the low-reflectivity optical spherical surfaces.
Owner:ZHEJIANG UNIV +1
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