Course approved by
Free of charge
Tridonic UK Ltd, 7 Lindenwood, Crockford Lane, Chineham Business Park, Basingstoke RG24 8LB
Tridonic UK Ltd
This presentation is intended to provide information on the need for lumen depreciation testing and how this is achieved.
The testing method LM-80 is explained along with the test data, including chromaticity shift plus the extrapolation method according to TM-21.
The presentation of this data on product data sheets is also explained.
Course title and key points covered
LED Lifetime and Lumen Depreciation
1. Introduction to LM-79 and LM-80
2. LM-80 testing
3. Test results for lumen depreciation and chromaticity shift
4. Extrapolation following procedure set out in TM-21
5. Presentation of data on data sheets