White LEDs serve as daytime running lights

[Bill Kaszeta / Photovoltaic Resources]

Interesting LED announcement from Electronic Products.

http://electronicproducts.com/ShowPage.asp?SECTION=3700&PRIMID=&FileName=hlap08.mar2006.html

Thin-film LEDs deliver 64 lm at 500 mA

Providing white light with an intensity of 64 lm (at 500 mA) at a color coordinate that falls within the permissible SAE
specification, the latest Golden Dragon Series of SMT LEDs can be used in exterior automotive lighting such as daylight
running lights and headlights without restriction. Features include color coordinates of x = 0.33, y = 0.33, a color
temperature of 5,600 K, and an optical efficiency of 36 lm/W.

The InGaN thin-film devices have a forward voltage of 3.2 V and use an optimized package with special carrier material
for an operating temperature range from -40° to 100°C. The Pb-free SMT LEDs are suitable for IR reflow soldering. (From
less than $10 available now.)
Osram Opto Semiconductors
San Jose, CA
Information 888-446-7726
Fax 408-456-4308
[email protected]
http://www.osram-os.com

----
That makes it $0.28 per lumen. Normal use will require some power processing to efficiently maintain the 3.2 volts.

A PL-7 lamp is rated at about 400 lm, generally under $2.00, but requires a ballast. 400 lm of these LED assemblies
would be about $111.
Bill Kaszeta
Photovoltaic Resources Int'l
Tempe Arizona USA
[email protected]

 

[Victor Roberts]

Bill,

Lumileds 1 W white LEDs put out 45 lm at 350mA and the cost per lumen
is $0.0662. Thats equal lumens per watt for a lot less $$$ than you
quoted.

So, you can buy this white Luxeon for $2.98? That's a pretty
good price. In what quantity?

--
Vic Roberts
http://www.RobertsResearchInc.com
To reply via e-mail:
replace xxx with vdr in the Reply to: address
or use e-mail address listed at the Web site.

This information is provided for educational purposes only.
It may not be used in any publication or posted on any Web
site without written permission.