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- W2034758315 abstract "Aspheres are utilized widely thanks to the development of optical design, manufacture and testing. Compensators are usually necessary when aspheres are under test. The alignment of aspheres and their compensators is a risk because it's tough to check whether the compensators work in right way. A new method of alignment with four poles is put forward in this paper. Optical interval error can be tight while it is quite important due to direct influence on central curvature, conic constant and high order coefficients of aspherical surface. A modified on-axis Foucault apparatus is set up since it makes the optical axis visible and helps to control the error of off-axis amount. Some small holes are drilled in the metallic cell of the compensator so that the ends of poles can be stably relied on in order to increase operational repeatability. The method has been carried out practically and it matches the measurement result given by a set of theodolites." @default.
- W2034758315 created "2016-06-24" @default.
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- W2034758315 date "2009-05-11" @default.
- W2034758315 modified "2023-10-16" @default.
- W2034758315 title "Alignment of off-axis asphere and compensator with four poles" @default.
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- W2034758315 doi "https://doi.org/10.1117/12.828589" @default.
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