High-power LED datasheets publish typical flux and other performance values at a lab controlled junction temperature of 25°C. As such, it is difficult to determine the expected level of usable light in a "real world" environment.
The purpose of this tool is to provide a true "real world" evaluation and comparison of high-power LEDs by taking into account the effects of 7 critical relationships.
For more details, click the links to read the ULT 2.x Tutorial and view the ULT 2.x Demonstration Video.
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