1,000 lumen LED: R&D today, off-the-shelf within 12 months?

September 11, 2007

Cree announced achieving 1,050 lumens in an lab version of a single-die cool-white LED – the warm-white version yielded 760 lumens. Efficiency for the cool-white was 72 lumens/Watt, and for the warm-white was 52 lumens/Watt. Compare this to a 100W incandescent lightbulb’s efficacy of about 18 lumens/Watt. Granted, Cree’s LED is still in the lab, but the company claims that it generally takes Cree only about 12 months before a lab-level LED is commercialized.

Posted by Margery Conner on September 11, 2007 | Comments (2)

January 23, 2008

In response to: 1,000 lumen LED: R&D today, off-the-shelf within 12 months?
Leonard Roque commented:

We are a Medical Equipment Co. that specializes in Illuminators for surgery. We are presently using the Cree 7090 XR-E LED for our lowest level illuminators. A 72 lumens/watt LED will put our LED Illuminator close to our lowest Xenon types as far as light output.

September 11, 2007

In response to: 1,000 lumen LED: R&D today, off-the-shelf within 12 months?
Dhananjay Gadre commented:

These new LEDs seem to indicate an increase in efficiency also. A not so recent Design Idea in EDN, Line Powered Driver Lights up High-Power LEDs, June 6, 2006, mentioned high-power white LED efficiencies of 45 lumens/Watt, so a 72 Lumens/W represents a fairly large increase.

About EDN | Site Map | Contact Us | Subscription | RSS

POST A COMMENT
Display Name

Before submitting this form, please type the characters displayed above. Note the letters are case sensitive: