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Proceedings Paper

Thermal compensation of infrared achromatic objectives with three optical materials
Author(s): Juan L. Rayces; Lan Lebich
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Paper Abstract

Often it is not possible to fix pairs of infrared refractive materials in the γv-v diagram to design achromatic doublets with focal distance thermal change, matching the expansion of the focal plane supporting structure. The problem can be solved with three refractive materials if they form a finite area triangle in the γV-V diagram. We derive formulas for the calculation of the power of the elements that include both the doublet and the triplet solutions.

Paper Details

Date Published: 1 January 1991
PDF: 8 pages
Proc. SPIE 1354, 1990 Intl Lens Design Conf, (1 January 1991); doi: 10.1117/12.47933
Show Author Affiliations
Juan L. Rayces, J.L. Rayces Consulting, Inc. (United States)
Lan Lebich, OCA Applied Optics (United States)

Published in SPIE Proceedings Vol. 1354:
1990 Intl Lens Design Conf
George N. Lawrence, Editor(s)

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