Sunlight readability and luminance characteristics of light-emitting diode push button switches.

Lighted push button switches and indicators serve many purposes in cockpits, shipboard applications and military ground vehicles. The quality of lighting produced by switches is vital to operators' understanding of the information displayed. Utilizing LED technology in lighted switches has challenges that can adversely affect lighting quality. Incomplete data exists to educate consumers about potential differences in LED switch performance between different manufacturers. LED switches from four different manufacturers were tested for six attributes of lighting quality: average luminance and power consumption at full voltage, sunlight readable contrast, luminance contrast under ambient sunlight, legend uniformity, and dual-color uniformity. Three of the four manufacturers have not developed LED push button switches that meet lighting quality standards established with incandescent technology.

Grantor dc:publisher

University of North Texas

Year dc:date

2004

Author dc:creator

• Fitch, Robert J.

Contributors dc:contributor

• Grubbs, Albert B.
• Guthrie, Don W.
• Kozak, Michael R.
• Stemprok, Roman
• Vaidyanathan, Vijay

• Light emitting diodes.
• sunlight readable
• LED
• indicator
• avionics
• annunciator
• illuminate

Statement dc:rights

• Public
• Copyright
• Fitch, Robert J.
• Copyright is held by the author, unless otherwise noted. All rights reserved.

Language dc:language

English

Identifier

oclc: 55874273
https://digital.library.unt.edu/ark:/67531/metadc4520/
ark: ark:/67531/metadc4520

OAI identifier oai:identifier

info:ark/67531/metadc4520