Abstract

An experimental investigation is made of Judd’s proposed three-color code for instrument panel lights. The adequacy of these specifications is tested using both normal and color-deficient subjects. It is shown that if certain specific limiting conditions are met as to the luminance, subtense, and chromaticity of the light signals, all normal observers and a majority of color-deficient observers can make the necessary identifications. The possible explanations for the poor performance of some, but not all, protanopes are discussed.

© 1955 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Recognition of Red and Green Point Sources by Color-Deficient Observers*

Louise L. Sloan and Adelaide Habel
J. Opt. Soc. Am. 45(8) 599-601 (1955)

An Experimental Determination of Some Iso-Chromaticity Lines in Color-Deficient Vision*

Rita M. Halsey and A. Chapanis
J. Opt. Soc. Am. 42(10) 722-739 (1952)

Color constancy of color-deficient observers under illuminations defined by individual color discrimination ellipsoids

Ruiqing Ma, Ken-ichiro Kawamoto, and Keizo Shinomori
J. Opt. Soc. Am. A 33(3) A283-A299 (2016)

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 (3)

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 (4)

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