Abstract
To fully characterize an unknown off-axis conic mirror requires knowledge of its optical axis vertex distance from the center of the segment, radius of curvature, conic constant, and surface figure error. No single test can provide all of this information. There are too many unknowns. To acquire the required knowledge, both a conjugate null test and a center of curvature test must be performed.
© 1994 Optical Society of America
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