Go Back  Bike Forums > Bike Forums > Electronics, Lighting, & Gadgets
Reload this Page >

1,000+ lumen single LED!

Notices
Electronics, Lighting, & Gadgets HRM, GPS, MP3, HID. Whether it's got an acronym or not, here's where you'll find discussions on all sorts of tools, toys and gadgets.

1,000+ lumen single LED!

Old 02-06-08, 10:15 PM
  #1  
Cyclaholic
CRIKEY!!!!!!!
Thread Starter
 
Cyclaholic's Avatar
 
Join Date: May 2005
Location: all the way down under
Posts: 4,268

Bikes: several

Mentioned: 35 Post(s)
Tagged: 0 Thread(s)
Quoted: 1192 Post(s)
Liked 230 Times in 134 Posts
1,000+ lumen single LED!

have you guys seen this? I only just noticed it on the Cutter Electronics website...


Originally Posted by from Cutter's website
10th September 2007 - Cree, Inc. (Nasdaq: CREE), a leader in LED lighting components, today announced it has demonstrated light output of more than 1,000 lumens – an amount equivalent to the output level of a standard household light bulb – from a single R&D LED. Cree’s achievement demonstrates continued leadership in the development of LEDs that can make traditional light bulbs obsolete.

A single-die LED, driven at four amps, produced 1,050 lumens in cool white and 760 lumens in a warm-white version. Efficacy of the cool-white LED was 72 lumens per watt and 52 lumens per watt from the warm-white device. Both LED versions operated at substantially higher efficacy levels than those of today’s conventional light bulbs. Historically, Cree’s R&D demonstrations generally have been commercialized within 12 to 24 months.
I wonder how much more efficient (lumens/watt) it would be at lower wattage? I suspect it could get well above 100lm/watt..... oh yes, the future looks bright for DIY LEDs
Cyclaholic is offline  
Old 02-07-08, 03:45 AM
  #2  
ovrrdrive
Senior Member
 
Join Date: Oct 2007
Location: Central Florida
Posts: 274
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I think there was a thread on this a while back... Doesn't matter though, that's one hell of a nice LED. Hopefully they are pretty cheap when they come out. Can you imagine a bank of 3 or 4 of those on the front of the bike?
ovrrdrive is offline  
Old 02-07-08, 08:42 AM
  #3  
twinquad
Senior Member
 
twinquad's Avatar
 
Join Date: Oct 2007
Location: State College PA
Posts: 230

Bikes: Cannondale T2000, Dean el Diente

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Originally Posted by Cyclaholic View Post
I wonder how much more efficient (lumens/watt) it would be at lower wattage? I suspect it could get well above 100lm/watt...
Indeed, Cree has a subsequent press release announcing 129 lumens/watt at 350 mA:

https://www.cree.com/press/press_deta...=1189687350946
twinquad is offline  
Old 02-07-08, 09:43 AM
  #4  
acroy
Senior Member
 
acroy's Avatar
 
Join Date: Jun 2005
Location: Dallas Suburbpopolis
Posts: 1,480
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
sweeeeett....
can't wait for the $60 Fenix version
acroy is offline  
Old 02-07-08, 09:49 AM
  #5  
n4zou
Scott
 
n4zou's Avatar
 
Join Date: Jun 2006
Posts: 2,393

Bikes: Too Many

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Originally Posted by twinquad View Post
Indeed, Cree has a subsequent press release announcing 129 lumens/watt at 350 mA:

https://www.cree.com/press/press_deta...=1189687350946
I just upgraded my DIY dynamo headlight to a Cree P4 at 120 lumen. This replaced a 1-watt 49 lumen Luxeon LED in a Luxeon holder and lens. I also no longer needed to regulate the voltage and current supplied by my dynamo. The Luxeon LED could only be driven at 350mA. The new Cree LED is happy with 500mA from the dynamo. My upgraded LED headlight is now brighter than a friends night rider 5-watt halogen light with rechargeable batteries.
n4zou is offline  
Old 02-07-08, 01:28 PM
  #6  
jeff-o
Recumbent Evangelist
 
Join Date: Mar 2005
Location: Kitchener, Ontario
Posts: 2,991

Bikes: Rebel Cycles Trike, Trek 7500FX

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Shiny! (literally)

We'll finally start seeing these in car headlights, too...
jeff-o is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.