
Standard Test Method for Determining Luminance of a Membrane Switch Backlit with Diffuse Light Source
出版:American Society for Testing and Materials

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CONTAINED IN VOL. 10.04, 2006 Includes procedures for determining the luminance of abacklit membrane switch. Applies to a fully assembledswitch. For specific purposes, it can be applied topartially assembled switches with the understanding thatthe results pertain only to the partial assembly and willbe modified as the further assembly proceeds.