I was wrong, I read this thread from the begining, was my mistake. The photo is showing 2 black cats, the left with warm white LED and the right with the almost-cool white.
I have 2 flashlights with OGD. The zooming 3W wich produces veeery cool white and the black cat that produces cool white but with a slight! warm tint.
About the codes:this is taken from the forums of the product:
"BTW, I found a datasheet of Osram's Golden DRAGON Plus LW W5AM
LED that is used in some flashlights, but I don't know is it
the one inside the AA-S1. http://catalog.osram-os.com/catalogue/catalogue.do?act=showBookmark&favOid=0000000500006f180001003a
Short summary:
- Optical efficiency efficiency 63 lm/W (typ.) @ 350 mA
Maximum Ratings
- Forward current(max.) If = 1 A
- Vf @ 1A = ~3.93 V (according the datasheet curve)
- Power consumption Ptot = 4 W
My comments:
- Driving LW W5AM at 1 A (~ 4 W) is still in the specs.
5 W or more (when 3.6 V cells is used) is not .
- The efficiency is apparently worse than CREE emitters.
(edit: newer bins are available with better efficiency)
You were right about OSRAM's bins. There are more on a newer LUW W5AM datasheet:
--
bin / lm (@ 350 mA)
KX 71-82
KY 82-97
KZ 97-112
LX 112-130
LY 130-150
(Brightness groups are tested at a current pulse duration of 25 ms and a tolerance of ± 11%.)
--
LX has minimum efficiency of 100 lm/W then? Not bad.
KX, KY, KZ & LX bin LEDs are sold in Digi-Key so they all should be available.
KX seem to be priced 3.60 USD when bought in quantity of 200 pcs, LX is 4.65 USD there.
BTW, Digi-Key promises "Luminous Flux 131 lm" from LX.
Best KX or worst KY would in theory give 160 lm @ 700 mA (1.95 * [lumens @ 350 mA]), what DX promises from AA-S1.
There is only GD's and GD+'s. The Ultra version is just a special white tint which yields the highest efficacy. So it is _Golden Dragon Plus_ ultra white and not _Golden Dragon Plus Ultra_ white. :)
The next bigger thing of Osram is the Diamond Dragon.
Thanks nautic, but is better to know the correct bin and model before purchasing, and if I am not wrong this guy not says the exact bin and exact data....
Just got my AA-S1 today. Ordered 8/20, shipped 8/24, arrived 8/30. I also got my 14500s. The tint isn't really bad. According to my eyes, it looks sort of greenish white. The hotspot is small, and expands out nicely to the edge of the beam. It's pretty dim on NIMH, it's ok on 14500. I thought it would be brighter. My Hugsby P31 has better throw on NIMH vs. the AA-S1 14500, but the AA-S1 has a lot of more useful spill light. I must say the head of the AA-S1 gets hot rather quickly on 14500s. For about $10, it's not a bad light!
Edit: If you want something of better construction and brightness for about $4-5 more, go for the Hugsby P31/P32.
The lens was really dirty. I thought it was just the outside but I cleaned it off and it was still dirty. I had to take it apart and clean it from the inside. There is a little bit of dry gray grease but it doesn't look like they used much and it wasn't spread out evenly. There are chunks of it in one place and nothing in another spot. The construction quality isn't that great.
It's good to have as part of a collection but I don't think I would get another one. I'd rather get a Hugsby.
That's correct. The P31 still has decent spill, but most of the beam is concentrated in the hotspot. The AA-S1's beam is more spread out evenly. I like the tint of the Hugsby way more.
In Don's review of the Hugsby P31, he claims that it's the brightest AA light that he's seen. It's very true.