Abstract

Using a precision spectrometer with a photomultiplier attached to its telescope, the specular reflection of light from various rough surfaces was measured at angles of incidence in the region 80° to 89°. Seven interference filters were used to isolate spectral bands covering the visible spectrum. From the measured values of reflectance the chromaticity of the specularly reflected light was computed, assuming CIE source “A” for the incident light. It was found that at all angles the resulting colors lay in a narrow region near the Planckian locus, being more reddish than the incident light. The maximum redness was found at an angle where the specular reflectance had already become small. It is shown to be likely that if the specularly reflected light could be isolated the surface would form an accurate means of reducing color temperature.

© 1957 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Effect of surface roughness and subsurface damage on grazing-incidence x-ray scattering and specular reflectance

Gyanendra S. Lodha, Koujun Yamashita, Hideyo Kunieda, Yuzuru Tawara, Jin Yu, Yoshiharu Namba, and Jean M. Bennett
Appl. Opt. 37(22) 5239-5252 (1998)

Refractive Index of Opaque High-Gloss Surfaces

Guy C. Bell
J. Opt. Soc. Am. 47(12) 1118-1120 (1957)

Relation Between Surface Roughness and Specular Reflectance at Normal Incidence

H. E. Bennett and J. O. Porteus
J. Opt. Soc. Am. 51(2) 123-129 (1961)

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 (7)

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

Equations (1)

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