Neutral/Warm OSTAR bins

[maxspeeds]

I'm very familiar with Crees and Seouls, but fairly new to Ostars. I've been looking at the Bin tables, and am not quite sure what would be equivalent to a Cree 5A or 6A as far as tint? I'm looking to acquire an Ostar LED that is similiar in tint to 5A and 6A Crees.

 

[maxspeeds]

Ok, looking back at the table, it appears that an Ostar LE CW EJ3 would be close. Does this appear correct?

 

[PhantomPhoton]

I'd think you'd want a J4 or a K4 tint because it seems to be closer to the blackbody curve. (just my guess from looking at the charts not an informed answer) But yeah it looks like that general area. Unfortunately I don't have a clue where you could source some though.

 

[yellow]

With Osram You can
* NOT choose the brightness bin,
* NOR the color tint
plus the leds are brutally expensive and inefficient (seem to have the same data as old Luxeons. Rule of thumb: half efficient than actual led)

when just a bit of power applied, the 6 die gets hot (and I mean hot), even with a very large sink
(tested it on the fly with a Pentium II sink. At about 350 mA one cant touch the sink any more at ~5 mins)

 

[maxspeeds]

With Osram You can
* NOT choose the brightness bin,
* NOR the color tint
plus the leds are brutally expensive and inefficient (seem to have the same data as old Luxeons. Rule of thumb: half efficient than actual led)

when just a bit of power applied, the 6 die gets hot (and I mean hot), even with a very large sink
(tested it on the fly with a Pentium II sink. At about 350 mA one cant touch the sink any more at ~5 mins)

Hi Yellow :wave:.

Thank you for this post. I forgot about not being able to choose tints. A bit reminiscent of the "luxeon lottery", isn't it? Regarding it's inefficiency, that is one of the biggest concerns in the back of my mind. I do realize that it also takes over 20 volts to power up, something that wouldn't be considered practical for a handheld flashlight by mainstream society. Note taken. How about the 4-die Ostars? I believe they are 10w?

 

[maxspeeds]

I'd think you'd want a J4 or a K4 tint because it seems to be closer to the blackbody curve. (just my guess from looking at the charts not an informed answer) But yeah it looks like that general area. Unfortunately I don't have a clue where you could source some though.

Yup, I'd be happy with J4 or K4. My main concern is that it isn't angry purple