Identification of Signal Lights I Blue, Green, White, and Purple
- 1 January 1959
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America
- Vol. 49 (1) , 45-55
- https://doi.org/10.1364/josa.49.000045
Abstract
One hundred observers identified by name fifty blue, green, white, and purple test colors. Small areas and low illuminances were used to simulate conditions under which signal lights must be recognized. The results are expressed as chromaticity zones within which the test colors were assigned a given color name with various degrees of certainty. Large individual differences in color naming were found. Variability due to intensity and viewing distance is also demonstrated. The data can be applied to the specification of boundaries for colored signals.Keywords
This publication has 5 references indexed in Scilit:
- Chromaticity-Confusion Contours in a Complex Viewing Situation*Journal of the Optical Society of America, 1954
- The recognition of coloured light signals which are near the limit of visibilityProceedings of the Physical Society, 1947
- The measurement of the chromatic and achromatic thresholds of coloured point sources against a white backgroundProceedings of the Physical Society, 1947
- Color Designations for LightsJournal of the Optical Society of America, 1943
- Rectangular Uniform-Chromaticity-Scale CoordinatesJournal of the Optical Society of America, 1939