CLOSED - Osram PL TB450B 1.6W (Substitute for the M140)

[The Lightning Stalker]

Re: Open: Osram PL TB450B 1.6W (Not M140)

Wow that is great news! :drool: :thanks: John for posting your test results. The only way to
get around the pic resizing that I've found is to take the pic URL and put in inside

tags once it has uploaded. This is all being done on a TEC, correct?

 

[POLISHEDBALL]

Re: Open: Osram PL TB450B 1.6W (Not M140)

Wow that is great news! :drool: :thanks: John for posting your test results. The only way to
get around the pic resizing that I've found is to take the pic URL and put in inside

tags once it has uploaded. This is all being done on a TEC, correct?

These numbers were valid tec or not, I only had a small tec set at 68 degrees, and just turned it on at the end to see if it would maintain the 1.9w it was solid there for 45 minutes.

I plan on doing test with it extremely chilled later on.

 

[cheech226]

Re: Open: Osram PL TB450B 1.6W (Not M140)

thanks for the numbers bro!
how many volts did it take at 1.75A?

 

[Livinloud]

Re: Open: Osram PL TB450B 1.6W (Not M140)

Your adding pictures as an attachment so it will always be that small. If you want a larger photo you need to use a photo hosting website and post the photo as a code

 

[NO4H99]

Re: Open: Osram PL TB450B 1.6W (Not M140)

Diode number 2 results. Much more like I would have expected.

Bias is at 172ma doing 30mw
500mw. @ 520ma
750mw. @. 728ma
1w. @. 945ma
1.2w. @. 1.13A
1.34w. @. 1.28A
1.55w. @. 1.428A
1.73w. @. 1.62A
1.83w. @. 1.75A
1.9w. @. 1.94A
1.93w. @. 2.2A. Clearly not worth pushing harder in my case. If I had 2 doing this I'd kill one but want to keep one working.

The first diode may have been a result of lens reflections not sure I tried a very small 2 FL lens that works great on P73's could have done some damage before I switched to the g2

Hope this is useful.

Thank you very much for the numbers. :beer:

 

[POLISHEDBALL]

Re: Open: Osram PL TB450B 1.6W (Not M140)

thanks for the numbers bro!
how many volts did it take at 1.75A?

I drive it with a Flexmod, always been a module guy, so never really look at voltage. I will check the Vdrop across when I fire it up next. Perhaps tomorrow.

 

[POLISHEDBALL]

Re: Open: Osram PL TB450B 1.6W (Not M140)

And go ahead and put me down for one in the next buy.

 

[mhemling33]

Re: Open: Osram PL TB450B 1.6W (Not M140)

I got mine in today. I through put it together with the 1.8A X-Drive and I am getting 2.4W with the G2 and 1.95 with the 3 element.

My dot looks pretty ugly with the g2 though. I have a noticeable batwing to one side.... but the 3 element seems to take care of it fairly well.

I will post actual LPM's and everything within the next couple days....

I am happy thank you for doing this!

 

[RA_pierce]

Re: Open: Osram PL TB450B 1.6W (Not M140)

I got mine in today. I through put it together with the 1.8A X-Drive and I am getting 2.4W with the G2 and 1.95 with the 3 element.

My dot looks pretty ugly with the g2 though. I have a noticeable batwing to one side.... but the 3 element seems to take care of it fairly well.

I will post actual LPM's and everything within the next couple days....

I am happy thank you for doing this!

You bastard!
I had a feeling these diodes were quite efficient. Even without a power measurement I could tell it was one hell of a diode... that is until it died.
Man I feel even more unlucky with all you guys posting results.

Personally I don't mind the extra artifacts from the G-X lenses. After all it is the "true" output of the diode. The extra power is worth it.
The 3-element clips the beam and creates different patterns of crap around the beam. With the multimode blues they tend to spread the artifacts out much wider than the G lenses which is very noticeable if you turn off the lights and put the dot into a beam dump.

BTW I found the filter for my LPM. :toilet:

 

[mhemling33]

Re: Open: Osram PL TB450B 1.6W (Not M140)

I installed the diode into a heatsink for a Solarforce L2 which I temporarily put in a L2T Special Edition. I am using a G2 lens and a fully charged set of Efest IMR 18350 batteries.

The results are better then I first stated lol

 

[The Lightning Stalker]

Re: Open: Osram PL TB450B 1.6W (Not M140)

This is getting serious. Thanks mhemling for posting those results.

I knew it was strong when I could feel the heat at 10" with no lens and see the light
reflecting up from my shirt with the glasses on, and it was a dark colored shirt. I have some
C-mount IR diodes and at 2.4A it can't be felt at all until your hand is almost touching it. It is
a different wavelength, though and different diodes. A light which cannot be seen.

POLISHEDBALL: I'll put you down for one piece.

 

[POLISHEDBALL]

Re: Open: Osram PL TB450B 1.6W (Not M140)

I'm now questioning how much hurt my LPM head has on it. Perhaps it's time to buy one of the $100 meters to see how off my meter maybe.

I know Have smelled the burn when hitting it with nearly 10w, but still assumed it was only off a few mw's.

 

[cheech226]

Re: Open: Osram PL TB450B 1.6W (Not M140)

@mhemling33 what did you think of the beam with the g2 compared to an m140 diode?
i'm on the fence here. a very well known diode against the new guy. i can only buy one.

 

[RA_pierce]

Re: Open: Osram PL TB450B 1.6W (Not M140)

For my diode it was about the same.
There is hardly a difference. The M-140s are a tiny bit cleaner but other than that, divergence and beam shape are hard to tell apart.

op:

 

[POLISHEDBALL]

Re: Open: Osram PL TB450B 1.6W (Not M140)

For my diode it was about the same.
There is hardly a difference. The M-140s are a tiny bit cleaner but other than that, divergence and beam shape are hard to tell apart.

op:

Did you run any secondary correction lens or just the collmenating lens?

 

[shokkunlasers]

Re: Open: Osram PL TB450B 1.6W (Not M140)

So this diode is basically a cheaper alternative for the m140

Should add this to the title