Color-corrected optical systems
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United States of America Patent
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Apr 20, 1993
Issued Date -
N/A
app pub date -
Dec 27, 1990
filing date -
Sep 20, 1982
priority date (Note) -
Expired
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Abstract
A method is described for selecting optical materials to use in designing color-corrected optical systems. Various dioptric, catadioptric and anamorphic optical systems are described, which use only two different types of optical materials to obtain precise axial color correction at three, four or five wavelengths (depending upon the particular optical materials), with only very small chromatic aberration occurring at wavelengths between the precisely color-corrected wavelengths. Examples of color-corrected lens systems comprising more than two glasses are also described.
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