ASTM F 2359 Standard Test Method for Determining Color of a Membrane Switch Backlit with Diffuse Light Source

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ASTM F 2359 Document Information:

Title
Standard Test Method for Determining Color of a Membrane Switch Backlit with Diffuse Light Source

ASTM International

Publication Date:
May 1, 2004

Scope:

This test method covers procedures for determining the luminous color of a backlit membrane switch. As written, it applies to a fully assembled switch. For specific purposes, it can be applied to partially assembled switches, with the understanding that the results pertain only to the partial assembly and will be modified as the further assembly proceeds.

Keywords:

backlit

CIE

color coordinates

colorimeter

diffuse light

electroluminescent material

light emitting diodes

luminance

luminous color

membrane switch

photometer

radiometer

video photometer

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