Abstract

Comatic images formed by off-axis rays reflected from a good ellipsoidal mirror were studied experimentally. Horizontal and vertical knife edges were used to chop slices of these images, and the alternating current output of a photo-multiplier tube, proportional to the chopped radiation, was used to indicate the intensity distributions in the comatic images.

Calculations of intensity distributions in comatic images were made, and the experimental observations were predicted from them satisfactorily.

Infra-red detector sensitivity is inversely proportional to the square root of the detector area. Accordingly, the intensity distribution in the comatic image may be used to calculate optimum dimensions for both the exit slit and the detector in an infra-red spectrometer.

© 1950 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Infra-Red Microspectroscopy*

Elkan R. Blout, George R. Bird, and David S. Grey
J. Opt. Soc. Am. 40(5) 304-313 (1950)

Imaging at 3.4 THz with a quantum-cascade laser

Danielle R. Chamberlin, Peter R. Robrish, William R. Trutna, Giacomo Scalari, Marcella Giovannini, Lassaad Ajili, and Jerome Faist
Appl. Opt. 44(1) 121-125 (2005)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (5)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (17)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription