Osram Ostar "labertian" vs. 120 deg. ??

[yellow]

considered there is a choice to get the good emitters and purchasing makes sense ...

there is the "lambertian" and the "lensed" version.
http://www.farnell.com/datasheets/88038.pdf

both are "viewing angle" of 120 deg :thinking:

So, if one is going to use a reflector, better get the lambertian, or the lensed, ...
????
:thinking:

 

[TexLite]

Yellow,

MikeRD03 indicates in this thread
http://www.candlepowerforums.com/vb/showthread.php?t=173306
that the Ostar works better in a reflector without a lens,but the SF V's
had the lens intact.I know thats not much help.The source you linked to all I could find on their site were the NX-QX with optics and MY-PX without optics,so the bin preference there would be with a lens,unless I missed something.I have been in contact with someone who indicated there MAY be a way to get a specific flux bin,maybe QY or QZ,at a reasonable price,if the interest was there maybe we could do a group buy.I wanted to get an emitter from Mac,but waited too long while trying to source all the other parts for a build.PM sent.

Michael

 

[shroomy]

Yellow,

MikeRD03 indicates in this thread
http://www.candlepowerforums.com/vb/showthread.php?t=173306
that the Ostar works better in a reflector without a lens,but the SF V's
had the lens intact.I know thats not much help.The source you linked to all I could find on their site were the NX-QX with optics and MY-PX without optics,so the bin preference there would be with a lens,unless I missed something.I have been in contact with someone who indicated there MAY be a way to get a specific flux bin,maybe QY or QZ,at a reasonable price,if the interest was there maybe we could do a group buy.I wanted to get an emitter from Mac,but waited too long while trying to source all the other parts for a build.PM sent.

Michael

Ditto on that, it looks like some bin groups have the lens and others don't.

Yellow, neither of the two bin groups in your link are the "1000 lumen ostar". The LE W E3A group has 36 lumens per watt and the LE W E3B group has 50 lumens per watt at 350 mah, whereas the "1000 lumen ostar" (designated LE UW E3B) has 65 lumens per watt at 350 mah. Lastly, I believe that the A or B in the designation indicates whether those bins have the lens or not, so I'm pretty sure that the "1000 lumen ostar" is only available with the lens.

 

[yellow]

doh, yes, they feature different bins. Didnt even noticed that.
So the non-lens version can only be just as bright, as the good 4-die one?

Still can not understand what exactly they want with their non-binning-choice policy?
Not to sell the expensive emitters? :thinking:

PS: yups, "B" is with, "A" without lens
PPS: thought that "1000 lumen" one is the best E3B (QZ), but driven at 1 A
(how ever cooling is possible then)

 

[shroomy]

doh, yes, they feature different bins. Didnt even noticed that.
So the non-lens version can only be just as bright, as the good 4-die one?

Still can not understand what exactly they want with their non-binning-choice policy?
Not to sell the expensive emitters? :thinking:

PS: yups, "B" is with, "A" without lens
PPS: thought that "1000 lumen" one is the best E3B (QZ), but driven at 1 A
(how ever cooling is possible then)

Heh, actually it looks like the good 4-die ones are brighter than the non-lens version. :shakehead

Since there no picking bins i just refer to the highest bin group, LE UW E3B, as the "1,000 lumen ostar." The highest bin, the QZ, actually reaches 1000 lumens at 700 mah. I'm pretty sure the QX and QY bins will reach at least 1000 lumens at one 1 amp, and even if the PZ doesn't quite make 1000 lumens at 1 amp, it's not too far behind. Here's a link to the LE UW E3B group's data sheet.

http://catalog.osram-os.com/catalog...=downloadFile&favOid=020000000002548a000200b6

The non-binning policy sure is a pain though, I bought an ostar last week and i don't have a clue as to what bin it is.

By the way, Yellow, what reflector are you planning on using? I've been having some trouble finding reflectors for the ostar.

 

[TexLite]

Still can not understand what exactly they want with their non-binning-choice policy?
Not to sell the expensive emitters? :thinking:

I had read somewhere that Osram wasn't producing enough of the higher

bin Ostars to sell by individual bins,the same source said Osram was trying

to improve on that,that possibly they would begin to sell them by

individual bins sometime this year.Thats the only explanation I've found.