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Optical Engineering

Achromatization In The 3 To 5µm Spectral Region With Visible Light Transmitting Materials
Author(s): M. W. McDowell; H. W. Klee
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Paper Abstract

The theoretical performances of several f/1.5 triplet lenses suitable for use in the 3 to 5um spectral region are compared. Examples are given in which all the materials used have a finite visible transmittance. As centering errors can thus be considerably reduced, it is expected that such a lens will in practice approach more closely its theoretical performance. These lenses are also considerably less sensitive to manufacturing tolerances as a result of lower index materials, and the use of low dn/dT materials offers other advantages over the more usual silicon-germanium combination.

Paper Details

Date Published: 1 April 1984
PDF: 6 pages
Opt. Eng. 23(2) 232187 doi: 10.1117/12.7973409
Published in: Optical Engineering Volume 23, Issue 2
Show Author Affiliations
M. W. McDowell, Council for Scientific and Industrial Research (United States)
H. W. Klee, Council for Scientific and Industrial Research (United States)


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