Red LED's - what's the current latest/greatest

I'm looking to bump up my DIY bicycle taillight. The 3-watt generic LED's are several years old. What's the current highest lumens/watt and total output LED's? Cree has some interesting stuff, anything really better than all the others?

Thanks!

I think this thread needs to move to LED subforum ... this is Batteries

EDIT - thread moved

i'm looking for same thing, highest power red possible.
does anybody make a multi-chip red?

poguy said:

I'm looking to bump up my DIY bicycle taillight. The 3-watt generic LED's are several years old. What's the current highest lumens/watt and total output LED's? Cree has some interesting stuff, anything really better than all the others?

Thanks!

Click to expand...

Not a ton of progress on RED LEDs over the last many years. You are unlikely to see much if any noticeable improvement by changing the LEDs.

Cree does not make their own red die. It's from Epistar, so I would not look to them for the latest and greatest. Osram, Lumileds, and Epistar at a die level are the leaders in red technology, but it has not progressed as much as blue as the underlying material is different and the ROI is less. There is still a lot of work on improving it, mainly to achieve highly efficiency RGB. In the near term, blue pump with a quantum dot phosphor for narrow emission may be the next jump.

Great advice from everyone so far and I'd like to please humbly add that for torches you have the Fenix SD11, Fenix TK25 R&B, Acebeam X80; and for LED chip the below pictured Luminus appears impressive on paper:

I want to make a red light therapy light, basically as many lumens as possible of red light. 670nm Please can you help ?

You're right, not much new/exciting. It makes sense, a niche market with low ROI compared to white LED's.

poguy said:

You're right, not much new/exciting. It makes sense, a niche market with low ROI compared to white LED's.

Click to expand...

How many lumens of light would these LEDs produce ?

https://www.mouser.co.uk/Search/ProductDetail.aspx?qs=XqP7vETW7FUDKaeXQSicJA==
https://www.mouser.co.uk/Search/ProductDetail.aspx?qs=OdfJ6WaUL7NR1SNMq6SgGw==