IES LM-85-14:2014 Edition
$15.60
Electrical and Photometric Measurements of High-Powered LEDs
| Published By | Publication Date | Number of Pages |
| IES | 2014-04-16 | 31 |
Full Description
This document is a guide developed for the measurement
of high-power light emitting diodes (LEDs),
normally in a form of LED packages, used for lighting
products. High-power LEDs are those that require
a heat sink for their normal operation. The light
output of an LED depends strongly on its thermal
conditions, in particular, the junction temperatures
Tj. Junction temperature, however, is difficult to measure.
Various different methods have been used to
operate LEDs for photometric measurements and
the results could not be compared. This document
provides uniform test methods for operation of highpower
LEDs and test methods for photometric and
colorimetric measurement of high-power LEDs.
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