Patent ID: 8576408
Filing Date: 2013-11-05
Classification: G01M

Abstract:
1. A method for producing a convex mirror having a desired surface figure quality wherein the substrate of the mirror under test, the test optic, is treated as a lens prior to applying a reflective coating to the convex surface of the test optic substrate, the method comprising the steps of: a) choosing a material for the test optic substrate that is transmissive at a chosen coherent test beam wavelength, the test optic having a front convex surface side S b) specifying an (x,y) coordinate system in the pupil plane of the test optic where (x c) performing an interferometric test # d) performing an interferometric null test # e) performing an interferometric null test # f) calculating the rear surface S g) polishing the front convex surface S h) iteratively testing and polishing the front convex surface S i) coating the convex surface with a reflective material once the desired convex surface is obtained to thereby produce the desired convex mirror.