LED Luminaries

LED news and insight from our technology editor Steve Bush, who has been messing with LED lighting for more years than he would care to remember.

L+B: Osram claims 205 lm/W wall plug efficiency

With apologies for missing it earlier: Osram has hit 205 lm/W with a LED-based fluorescent tube replacement.

That is 215 lm/W without the custom 95% efficient mains power supply.

Inside, said the firm, are:
red leds
materials with maximum reflection – not sure what that means – and
“innovative” integrated optics

Output from 19W input is a credible is 3,900 lm of 3,000K light with 90 CRI – so no high colour temperatue poor CRI shortcuts here.

Osram bought together its central research department, optical semiconductor business, and lamp business, to make the prototype.

There isn’t a photo, but you don’t need one as it looks just like a fluorescent tube.

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