19 May 2003 Transmission spheres more than just a reference surface!
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The importance of understanding the design and use of Fizeau transmission spheres, for accurate evaluation of surface irregularities, cannot be understated. There are several characteristics that have a significant impact on the interpretation of the resulting data. Specific tests can be performed on a routine basis to quantify and maintain calibration of the precision masters and as a result, errors attributed to the transmission sphere can be isolated. The overall goal is to obtain accurate evaluations of surface irregularities of the actual surface under test.
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Joseph Pinto, Joseph Pinto, } "Transmission spheres more than just a reference surface!", Proc. SPIE 10314, Optifab 2003: Technical Digest, 1031415 (19 May 2003); doi: 10.1117/12.2284030; https://doi.org/10.1117/12.2284030

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