Even though LED lighting products should present an advantage in exceptional reliability, either with very long lifetime, as required in general lighting, or with profound robustness required in automotive lighting, developing widely-acceptable LED lighting product-level reliability standards has been challenging in the industry. In past years, the focus has been at the component level: e.g., LED source lumen maintenance test (ANSI/IES LM-80), lumen maintenance projection (IES TM-21), catastrophic failure rate projection (IES TM-26), driver robustness test (ANSI C82.16) and for solid-state lighting (SSL) at the lamp or luminaire level.

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