Mathematics – Probability
Scientific paper
Aug 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996spie.2775..317s&link_type=abstract
Proc. SPIE Vol. 2775, p. 317-326, Specification, Production, and Testing of Optical Components and Systems, Anthony E. Gee; Jean
Mathematics
Probability
Scientific paper
To evaluate the MTF performance of optical systems, the TOR option of the CODEV software from Optical Research Associates Inc. (ORA) is used for assessing MTF changes due to such tolerance aspects as decenters and tilts. In this evaluation, CODEV assumes internal coupling of the tolerances and a Rayleigh function for this tolerances' probability distribution, which assumption is well suited to serial modes. However, where one or more models are manufactured on a one-off basis, e.g. models of space instruments, this probability distribution is not realistic, in view of the independent nature and Gaussian distribution of the decenter generated on space instruments. To study this case and present the first results, AEROSPATIALE uses a new feature of the TOR option, which allows the user to modify the probability density functions.
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