Abstract

Apparatus for measurement of spectral directional reflectance in the far infrared between 2–100 μ is described. The reflectometer consists of opposed paraboloids, one on axis with 90° lip angle and a second of longer focal length off axis. A large uniform source beyond a chopper and the focal point of the off-axis paraboloid provides diffuse irradiation onto the sample. Spectral reflectances of diffusing and specular materials measured with the reflectometer attached to prism and grating monochromators are reported. Performance data including stray energy measurements are given, and results of an error analysis are presented.

© 1965 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Reflectometer design using nonimaging optics

Keith A. Snail
Appl. Opt. 26(24) 5326-5332 (1987)

Integrating Sphere for Imperfectly Diffuse Samples*

D. K. Edwards, J. T. Gier, K. E. Nelson, and R. D. Roddick
J. Opt. Soc. Am. 51(11) 1279-1288 (1961)

Fluorescent Integrating Sphere for the Vacuum Ultraviolet

W. M. Brandenberg
Appl. Opt. 9(2) 451-457 (1970)

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 (8)

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 (2)

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 (8)

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

Metrics

You do not have subscription access to this journal. Article level metrics 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