2009-08-04

FakeTV Uses LEDs to Thwart Thieves

A new burglar deterrent device from Opto-Electronic Design, FakeTV, uses light-emitting diodes (LEDs) and optics to produce exactly the same sort of light a television does. The idea is that when a burglar sees the light from an operating television shining through the curtains, he probably thinks that somebody is home and that he should move on to an easier mark.
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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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