QC 351 A7 no. 21 / It is found that, despite the finite extent of any real pupil, an
absorption coating exists which, when applied to the pupil of an optical
system, results in nearly perfect formation of the coherent image. It is
suspected that this coating causes a significant loss of total illumination.
On the other hand, an "active" pupil (one for which there is a gain
in light flux) would allow the quasi-perfect imagery without any loss in
total illumination. When active pupils become a technological reality,
this will be a good use for one.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/621614 |
| Date | 20 October 1967 |
| Creators | Frieden, B. Roy |
| Publisher | Optical Sciences Center, University of Arizona (Tucson, Arizona) |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | Technical Report |
| Rights | Copyright © Arizona Board of Regents |
| Relation | Optical Sciences Technical Report 21 |
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