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Old 12-03-2013, 04:14 PM #33
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Default Re: Feeler: Osram PL TB450B 1.6W (Not M140)

Are you sure it is the 1.4W version?
Perhaps the 1.6W is the same diode just selected for higher output?
Or maybe Osram uses the same recipe so the artifact on the fast axis is the same.

Awaiting wl test...
Thanks!


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Old 12-03-2013, 08:28 PM #34
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Default Re: Feeler: Osram PL TB450B 1.6W (Not M140)

My C6 (not sure if A140 or M140 diode) also has that "3 lines" output if underdriven with only one battery (150-200mW).
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low 445nm: C6 from Survival Lasers (1351mW pk|1289mW avg|1100mW rtd)
high 450nm: NewWish (12.6mW pk|5mW rtd) | Dominator by Blord (3010mW pk|2779mW avg during 5min)
462nm: 501B by Atomic (1507mW avg)
473nm: BWB-10-OEM labby by CNI (10mW rtd)
520nm: MXDL pen by DTR (31.6mW pk|28.8mW avg)
532nm: NewWish (28.6mW pk|26.8mW avg|10mW rtd) | Dapper (30.3mW pk) | Classic (120.0mW pk|103.1mW avg|100mW rtd) | "The Green Box" by Atomic (176.7mW pk|140.0mW avg)
589nm: Spartan from Dragon Lasers (58.4mW pk|37mW avg|50mW rtd)
632.8nm: HeNe pointer by Atomic (0.68mW rtd)
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808nm: Classic modded from a 532nm (162mW avg)
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Old 12-04-2013, 01:33 AM #35
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Default Re: Feeler: Osram PL TB450B 1.6W (Not M140)

Okay, I've done some wavelength testing. The wavelength at 300mA is 440nm. I can only
test at low power for several reasons.
  1. I don't want to burn my ruler/wall/grating.
  2. I don't have a neutral density filter.
  3. The only lens I have is B coated and reflects quite a bit of blue. COD is quite undesirable.
  4. I don't have any OC/partial mirrors to provide a limit that way.

My confidence in this measurement is quite high due to some other very accurate
measurements with a 532nm DPSS laser. It isn't off by any more than 5nm at the
absolute worst. It would be even better if I had a multiline HeNe, but no such joy.
Either this one just happens to have a low wavelength or I did overheat it when I put the
heatshrink on.

I was experimenting with several different "filters" due to the lack of anything real. The best
hope was a shade 10 filter designed for welding masks. That turned out to block all of the
blue light. It is most likely an absorptive type and not reflective like safety glasses. I kept
turning up the power because no light was going through and it started melting. It wasn't
even an inch in front of the lens, nowhere near the focal point. Only a faint yellow light
actually goes through. It is quite similar to the safety glasses in that regard. Luckily it
was just an old scratched up junk filter that is pitted by welding slag.



I think I'm going to try making a hole in something round and putting it on a motor shaft
since I have plenty of CD/DVD/BluRay spindle motors just lying around. Does anyone
have a better idea? It's either that or stacking a bunch of lenses out of old sunglasses.

If there are no further objections, I'm going to go ahead and declare this GB officially open.
Attached Thumbnails
CLOSED - Osram PL TB450B 1.6W (Substitute for the M140)-shade-10-filter-burned.jpg   CLOSED - Osram PL TB450B 1.6W (Substitute for the M140)-800-1.jpg   CLOSED - Osram PL TB450B 1.6W (Substitute for the M140)-800-2.jpg  
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Old 12-04-2013, 04:39 AM #36
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Default Re: Feeler: Osram PL TB450B 1.6W (Not M140)

I'll take one...
Will you be sending them out once all the orders are in or are you willing to send out one of your samples for someone who is a little impatient?
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Old 12-04-2013, 04:55 AM #37
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Default Re: Feeler: Osram PL TB450B 1.6W (Not M140)

The 4 samples will go out immediately upon receipt of payment. Earlier posts have seniority. There are 2
ahead of you right now. It all depends on exactly how many KRNAZNBOY wants. If he wants less than 3
then you definitely have one. I just sent him a PM to find out.
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Old 12-04-2013, 04:59 AM #38
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Default Re: Feeler: Osram PL TB450B 1.6W (Not M140)

Any ideas on max power?
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Old 12-04-2013, 05:21 AM #39
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Default Re: Feeler: Osram PL TB450B 1.6W (Not M140)

Quote:
Originally Posted by The Lightning Stalker View Post
The 4 samples will go out immediately upon receipt of payment. Earlier posts have seniority. There are 2
ahead of you right now. It all depends on exactly how many KRNAZNBOY wants. If he wants less than 3
then you definitely have one. I just sent him a PM to find out.
Ok, cool.
Send me a PM when you know. I'll have the $ ready.
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Old 12-04-2013, 05:29 AM #40
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Default Re: Feeler: Osram PL TB450B 1.6W (Not M140)

I really wanted to do an LPM test tonight, but I can't figure out how to get around the lens/sensor
problems. I'm going to order a lens right now, but that is probably like a week out at best. About all I
can say right now is that it is at least equivalent to some IR C-mount diodes I've been running at 2.3A.
No LPM data on those yet either

I'm not sure how running the head without the front half would affect the results, but I could give it a
shot. Drafts and ambient aren't going to affect the results much at these power levels anyway. The
only thing that might throw the result off is the loss of the extra thermal mass of the front half. It's not
happening tonight anyway. It's getting late.
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Old 12-05-2013, 04:07 AM #41
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Default Re: Feeler: Osram PL TB450B 1.6W (Not M140)

This worked out perfect because I just messed up an m140 I was screwing around with (should of just left it alone).... but this means I now have a 1.8A X-drive I am going to use on it
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Old 12-05-2013, 04:33 AM #42
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Default Re: Feeler: Osram PL TB450B 1.6W (Not M140)

Is your X-drive adjustable? The abs. max. on the datasheet is 1.6A. I counted only 3 bond wires (from
each pin). This is just a guess, but the bond wires on these will likely fail just before COD occurs.
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Old 12-05-2013, 06:07 AM #43
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Default Re: Feeler: Osram PL TB450B 1.6W (Not M140)

Quote:
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Is your X-drive adjustable? The abs. max. on the datasheet is 1.6A. I counted only 3 bond wires (from
each pin). This is just a guess, but the bond wires on these will likely fail just before COD occurs.
X-Drive is not adjustable. I know the data sheet says 1.6A but it also says that for the 1.4W version so I am just gonna take a gamble that it can handle it

I figure someone has to try it
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Old 12-05-2013, 10:12 AM #44
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Default Re: Open: Osram PL TB450B 1.6W (Not M140)

A 3-element glass lens coated for 445nm is on order to do the LPM testing, etc.
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Old 12-05-2013, 05:27 PM #45
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Default Re: Open: Osram PL TB450B 1.6W (Not M140)

i'd like one of these diodes too. as far as powering them, dtr did testing on the 1.4 diodes pushed to 1.85A here
DTR's Laser Shop: Diodes-Drivers-Lenses-LEDs & More - Page 11
can't wait until you can test these with the proper lens at max A
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Old 12-05-2013, 07:10 PM #46
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Default Re: Open: Osram PL TB450B 1.6W (Not M140)

I'll take one too.
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Old 12-05-2013, 07:28 PM #47
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Default Re: Open: Osram PL TB450B 1.6W (Not M140)

Can we contribute to a murder fund? (or is that already going on and I somehow missed it)
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Old 12-05-2013, 07:36 PM #48
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Default Re: Open: Osram PL TB450B 1.6W (Not M140)

Quote:
Originally Posted by NO4H99 View Post
Can we contribute to a murder fund? (or is that already going on and I somehow missed it)
No murder fund yet, but we can start one.
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Posted By For Type Date
好久没玩激光了,弄个450的玩玩-科创茶话 This thread Refback 10-20-2014 03:22 PM
好久没玩激光了,弄个450的玩玩-科创茶话-科创论坛-中国专业创客的核心社区 This thread Refback 06-14-2014 04:35 AM
PL TB450B - Lasers Wiki This thread Refback 04-16-2014 11:27 AM
好久没玩激光了,弄个450的玩玩-科创茶话-科创论坛-中国顶尖创客平台 This thread Refback 04-01-2014 04:37 AM
PLTB450B - Lasers Wiki This thread Refback 03-17-2014 05:20 AM










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