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Proceedings Paper

Diamond turning of silicon optics
Author(s): Philip Michael Parr-Burman; Paul Shore
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Paper Abstract

In the 3 to 5 micron waveband the material that gives the best ratio of optical power to density is silicon. Optics using this material would tend to be the lightest possible. Unfortunately it has high dispersion so that optical systems need achromatizing. A diffractive surface can achromatize a lens without having the disadvantages of an extra element that will have both extra mass and will lead to tight tolerances between the two halves of the doublet. Silicon is a notoriously difficult material to a machine, however recent trials have enabled this to be carried out satisfactorily on a lens of 125 mm diameter.

Paper Details

Date Published: 19 August 1996
PDF: 10 pages
Proc. SPIE 2775, Specification, Production, and Testing of Optical Components and Systems, (19 August 1996); doi: 10.1117/12.246793
Show Author Affiliations
Philip Michael Parr-Burman, Pilkington Optronics (United Kingdom)
Paul Shore, (formally) Cranfield Precision (United Kingdom)


Published in SPIE Proceedings Vol. 2775:
Specification, Production, and Testing of Optical Components and Systems
Anthony E. Gee; Jean-Francois Houee, Editor(s)

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