High power led
- Thread starter groo01
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At what current? It makes a difference.
Gunner12
Flashaholic
Brightest available for individual sale that I know of is the Cree XR-E R2.
What kind of light are you looking to building?
What kind of light are you looking to building?
Highest Lumen output on a single die is from Osram (well there is Phlatlight too). Highest apparent surface brightness is probably Luxeon Rebel 100 lumen though may now be the XPE-R2 bin. Most Lumens from typical 1mm die, Cree XRE-P2 driven way over rated current.
Gryloc
Enlightened
Semiman, you mean the R2 driven at high currents? I thought that was what you meant, otherwise I was wondering if I missed some magical P2 bin emitter that can handle like 5 amps 
. jtr1962 was able to overdrive a Cree XR-E (R2 bin) that was attached to a heatpipe and a peltier system (I believe) to achieve slightly over 500lm from a standard 1mm x 1mm die. See here (it starts on post #164 and spans over a couple of pages). Of course this was a mad overdrive using large and bulky cooling systems that are not practical for the typical flashlight.
Groo, saabluster would be one of the ideal folks here to talk to about this topic. He has a good understanding of overdriving single die emitters and placing them behind massive aspheric lenses to create the longest throwing LED flashlights [in the world]. The ones he sells are called the DEFT.
Could you give us an idea of what you want to do? It is good that you do not see your idea used yet, because that means that you have some new and cool plans that will give us stuff to say "ooh" and "ahh" over in the future. It sounds like you want a flashlight with an intense beam (maybe very tight). This can be achieved using single die emitter behind a large reflector. It can also be achive by using a quad die emitter behind a massive reflector (like from a lantern). If you dislike the donut hole in your beam, but want a very intense beam (albiet slightly wider), you can use multiple single-die emitters behind individual reflectors. One common platform is the C and D cell Maglites (there are plenty of nice heatsinks and reflectors designed so you can have 3, 4, 5, 6, or 7 emitters and reflectors in the head of the flashlight). Good luck with your project!
Cheers,
-Tony
. jtr1962 was able to overdrive a Cree XR-E (R2 bin) that was attached to a heatpipe and a peltier system (I believe) to achieve slightly over 500lm from a standard 1mm x 1mm die. See here (it starts on post #164 and spans over a couple of pages). Of course this was a mad overdrive using large and bulky cooling systems that are not practical for the typical flashlight. Groo, saabluster would be one of the ideal folks here to talk to about this topic. He has a good understanding of overdriving single die emitters and placing them behind massive aspheric lenses to create the longest throwing LED flashlights [in the world]. The ones he sells are called the DEFT.
Could you give us an idea of what you want to do? It is good that you do not see your idea used yet, because that means that you have some new and cool plans that will give us stuff to say "ooh" and "ahh" over in the future. It sounds like you want a flashlight with an intense beam (maybe very tight). This can be achieved using single die emitter behind a large reflector. It can also be achive by using a quad die emitter behind a massive reflector (like from a lantern). If you dislike the donut hole in your beam, but want a very intense beam (albiet slightly wider), you can use multiple single-die emitters behind individual reflectors. One common platform is the C and D cell Maglites (there are plenty of nice heatsinks and reflectors designed so you can have 3, 4, 5, 6, or 7 emitters and reflectors in the head of the flashlight). Good luck with your project!
Cheers,
-Tony
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Semiman, you mean the R2 driven at high currents? I thought that was what you meant, otherwise I was wondering if I missed some magical P2 bin emitter that can handle like 5 amps
Groo, saabluster would be one of the ideal folks here to talk to about this topic. He has a good understanding of overdriving single die emitters and placing them behind massive aspheric lenses to create the longest throwing LED flashlights [in the world]. The ones he sells are called the DEFT.
Could you give us an idea of what you want to do? It is good that you do not see your idea used yet, because that means that you have some new and cool plans that will give us stuff to say "ooh" and "ahh" over in the future. It sounds like you want a flashlight with an intense beam (maybe very tight). This can be achieved using single die emitter behind a large reflector. It can also be achive by using a quad die emitter behind a massive reflector (like from a lantern). If you dislike the donut hole in your beam, but want a very intense beam (albiet slightly wider), you can use multiple single-die emitters behind individual reflectors. One common platform is the C and D cell Maglites (there are plenty of nice heatsinks and reflectors designed so you can have 3, 4, 5, 6, or 7 emitters and reflectors in the head of the flashlight). Good luck with your project!
Cheers,
-Tony
Yes correct, I meant R2. I really need to sleep more. Behind an aspheric lens, the XRE tends to top everything as it has a narrower pattern making it easier to collect the light on the lends.
