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IES LM-20-13

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IES LM-20-13 IES Approved Method for Photometry of Reflector-Type Lamps

standard by Illuminating Engineering Society, 02/04/2013

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As used in this laboratory method, a reflector-type lamp is a lamp having a reflective element(s) intendedto redirect flux from the emitting element (e.g., filament, arc) to form the intended spatial distribution of the light. For example, a reflective element might take the form of a reflective coating applied to the lamp bulb, or a reflector positioned relative to the emitting element and permanently affixed in this position. This laboratory method does not apply to the following: lamps of standard bulb shape to which an integral reflector is added such as silver-bowl and silvered-neck lamps; reflector-type lamps that are designed for special applications, such as automotive headlamps and projection lamps, for which lamp specific test procedures have been established; or lamps that are known to have special testing requirements beyond those addressed in this laboratory method such as linear fluorescent reflector lamps that have special temperature or orientation requirements.

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Published: 02/04/2013 ISBN(s): 9780879952761 Number of Pages: 18File Size: 1 file , 380 KB