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Significance and Use
To provide a standardized test method that can be used for a valid comparison of luminance time curves, color changes and cosmetic changes between lamps of various designs, fabrication techniques, and sources.
1.1 This test method establishes the procedures for determining the visible performance change, which is defined by luminance, color and cosmetic appearance of an electroluminescent lamp during operation over an extended time.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
F1595 Practice for Viewing Conditions for Visual Inspection of Membrane Switches
F2359 Test Method for Determining Color of a Membrane Switch Backlit with Diffuse Light Source
F2360 Test Method for Determining Luminance of a Membrane Switch Backlit with Diffuse Light Source
ICS Number Code 17.180.20 (Colours and measurement of light)
UNSPSC Code 39101600(Lamps and lightbulbs)
ASTM F2771-10, Standard Test Method for Determining the Luminance Curve of an Electroluminescent Lamp at Ambient Conditions, ASTM International, West Conshohocken, PA, 2010, www.astm.orgBack to Top