Abstract

The two-constant theory of diffuse reflection and transmission deduced by Kubelka and Munk is much used for the determination of the absorption coefficient of dyed materials. Although the theory is derived for diffuse illumination of the specimen, it is often applied to reflectance values measured with reflectometers for parallel incidence. If the diffusing material can be prepared in the form of a thin sheet, a means is given to control the validity of the theory with respect to the optical geometry of the reflectometer. Experiments made with the geometries RD,0, R6,D, R0,45, and R60,D, show that if the material is colored, only reflectance values obtained with diffuse incidence, as predicted by the theory, may be applied with great accuracy to the Kubelka-Munk theory. For white or light colored materials, the optical geometry of the reflectometer is of minor importance in this respect.

© 1955 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Determination of Absorption and Scattering Coefficients for Nonhomogeneous Media. 2: Experiment

W. G. Egan, T. Hilgeman, and J. Reichman
Appl. Opt. 12(8) 1816-1823 (1973)

Spatially resolved absolute diffuse reflectance measurements for noninvasive determination of the optical scattering and absorption coefficients of biological tissue

Alwin Kienle, Lothar Lilge, Michael S. Patterson, Raimund Hibst, Rudolf Steiner, and Brian C. Wilson
Appl. Opt. 35(13) 2304-2314 (1996)

Determination of Kubelka–Munk scattering and absorption coefficients by diffuse illumination

Robert Molenaar, Jaap J. ten Bosch, and Jaap R. Zijp
Appl. Opt. 38(10) 2068-2077 (1999)

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 (1)

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 (14)

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