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Proceedings Paper

Diamond Turning Wavefront Correctors: Opening New Optical Design Flexibilities
Author(s): S R Patterson; T T Saito; A B Meinel; M P Meinel; J E Stacy
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Paper Abstract

A wavefront corrector (WFC) is a component in an optical system Which corrects for errors of an earlier optic which is imaged onto it. WFC's can be used in two-stage optics in which a primary mirror with large surface errors can be incorporated in the "fovea] mode" to make an ultra-wide-field system and yield an upgraded high acuity image. WFC's, therefore, offer significant cost advantage for fabricating large telescope primaries. We report the JPL-LLNL first embodiment of this concept which includes a non-axisymmetric WFC containing greater than a wave of astigmatism and two waves of coma (1 wave = 0.63 μm). The 6 cm diameter WFC was diamond turned on a super invar substrate covered with 13% phosphorous electroless nickel. Metrology of the WFC with this great an error to 10th wave accuracy was challenging.

Paper Details

Date Published: 13 February 1987
PDF: 7 pages
Proc. SPIE 0676, Ultraprecision Machining and Automated Fabrication of Optics, (13 February 1987); doi: 10.1117/12.939509
Show Author Affiliations
S R Patterson, Lawrence Livermore National Laboratory (United States)
T T Saito, Lawrence Livermore National Laboratory (United States)
A B Meinel, California Institute of Technology (United States)
M P Meinel, California Institute of Technology (United States)
J E Stacy, California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 0676:
Ultraprecision Machining and Automated Fabrication of Optics
Donald L. Decker, Editor(s)

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