Philips Lumileds Explains Method of Assessing LED Array “Lifetime” Performance in New White Paper
Source/Type:  LIGHTimes Online - News - Staff reports

May 6, 2010... Philips has published a new white paper entitled "Evaluating the Lifetime Behavior of LED Systems" that Philips says provides a methodology for evaluating how arrays of LEDs behave over time. The methodology also explains how LED luminaire manufacturers can make business decisions such as warranty commitments.

While many manufacturers have substituted the lifetime of a single LED to be the lifetime of a luminaire, the paper goes beyond simple lumen maintenance data which describes how a single LED behaves and addresses the more common lighting system which uses multiple LEDs in a wide variety of use conditions.

Philips asserts that a more accurate estimation of an LED luminaire’s usable life is determined by a manufacturer’s determination of expected lumen maintenance of the multiple LEDs and by the actual usable life of the many components included in the system.

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