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IES LM-11 PDF
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Approved Method: Photometric Measurement of Searchlights Using Incandescent or HID Sources
| Published by | Publication Date | Number of Pages |
| IES | 02/07/2020 | 31 |
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IES LM-11 – Approved Method: Photometric Measurement of Searchlights Using Incandescent or HID Sources
This Approved Method applies to lighting equipment having a total field angle of less than ten degrees. This includes equipment in which light is controlled by reflectors, lenses, or their combinations. The document applies to projectors with a variety of light sources, including tungsten filament, tungsten-halogen, and high intensity discharge lamps. It does not apply to projector systems composed of arrays of light emitting diodes.
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