2013-12-24

DOE Publishes Report on Accelerated Life Testing of SSL Luminaires

The U.S. Department of Energy (DOE) has published the findings of a new study utilizing a highly accelerated life-test method (called the “hammer test”) intended to produce failures in SSL luminaires in a reasonable test period, with the goal of providing insight into potential failure modes. EntitledHammer Testing Findings for Solid-State Lighting Luminaires, the report was prepared by RTI International for DOE’s LED Systems Reliability Consortium.
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For three decades, white LEDs have depended on rare earth materials such as yttrium aluminum garnet (YAG) layered onto a blue LED chip (Figure 1). Seoul Viosys Co., Ltd. (KOSDAQ: 092190) today announced that it has broken that dependence. It h... READ MORE

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