Abstract

Emission spectra are shown for five pigments whose fluorescent colors are blue, green, yellow, orange, and red. These are compared to reflectance spectra of paints tinted to approximate, in daylight, the fluorescent colors of the five pigments and to a series of standard artist’s colors. The paper attempts to bring up to date practical information on the production of brightness with these phosphors. Following the general lines of development used by Kraehenbuehl and Chanon, data are given showing the relation between ultraviolet intensity and fluorescent brightness and between the latter and the masking effect of ambient illumination. The efficiency of light production from fluorescence excited by different types of commercial sources of near ultraviolet is described.

© 1949 Optical Society of America

Optical Properties of Calcium Silicate Phosphors

Frank J. Studer and Gorton R. Fonda
J. Opt. Soc. Am. 39(8) 655-660 (1949)

A Comparison of Direct Colorimetry of Titanium Pigments with Their Indirect Colorimetry Based on Spectrophotometry and a Standard Observer

Deane B. Judd
J. Opt. Soc. Am. 39(11) 945-950 (1949)

Temperature-Dependent Structure of the Emission Spectra of Two Crystalline Forms of the Zinc Silicate: Mn Phosphor

R. E. Shrader
J. Opt. Soc. Am. 39(8) 699-701 (1949)

The Emission Spectrum of Manganese-Activated Magnesium Germanate***

Stanley H. Patten and Ferd E. Williams
J. Opt. Soc. Am. 39(8) 702-704 (1949)

Some Variables Influencing Vernier AcuityI. Illumination and Exposure TimeII. Wave-Length of Illumination*

Katherine Eleanor Baker
J. Opt. Soc. Am. 39(7) 567-576 (1949)