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Proceedings Paper

Precision spacers as compensators
Author(s): Michael Kehoe; Cody Kreischer
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Paper Abstract

This paper examines the use of customized spacers to compensate for symmetric errors in lens systems. Examples of errors amenable to this type of compensation include radius, thickness and index of refraction of lenses and lens-to-lens spacing in lens barrels. Spacers used to separate consecutive lenses are selected after the optics have been fabricated and measured. A method is described for specification of spacer thickness as a function of the errors to be compensated by the spacer. The use of binning to enhance the efficiency of spacer selection is briefly explored.

Paper Details

Date Published: 27 September 2016
PDF: 15 pages
Proc. SPIE 9951, Optical System Alignment, Tolerancing, and Verification X, 99510H (27 September 2016); doi: 10.1117/12.2237982
Show Author Affiliations
Michael Kehoe, Resonon Inc. (United States)
Cody Kreischer, Kreischer Optics, Ltd. (United States)

Published in SPIE Proceedings Vol. 9951:
Optical System Alignment, Tolerancing, and Verification X
José Sasián; Richard N. Youngworth, Editor(s)

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