Blu-Ray Power Reading - Please Compare...

Please help!
Those of you who are measuring the power of blu-ray builds, please give me some feedback here so I can adjust my LPM-1 multiplier for blu-rays.

It seems that there are different results, with different meters. I just don't want to label a laser improperly, since I am selling a couple of blu-ray builds.

If you have data, please include:
* Which blu-ray diode.
* Driver & current.
* Which meter, and what power reading.
* What lens used.

Please take a look at my list of blu-rays here, and tell me what you think is sounding like the correct measurement from your experience!

I have been using the 473nm setting on my LPM-1 (no 405nm setting). I believe my multiplier (multiply X 2.6), may be a little high. I think that a multiplier of 2.0 might be closer to accurate. (but seems low) I will list my different blu-ray builds, with both figures..

Diode Driver Current  X 2.0     X2.6 Lens

803T  FlexDrive  90mA's  71.8mW's     93.3mW's     AixiZ acrylic (plastic cut away)

803T  FlexDrive  90mA's  86.4mW's     112.3mW's   AixiZ acrylic (plastic cut away)

803T  FlexDrive  90mA's  82.6mW's     107.3mW's   AixiZ acrylic (plastic cut away)

2 X burner DDL   110mA's 74.2mW's 96.4mW's    AixiZ acrylic (plastic cut away)

6 X burner DDL   140mA's 159.4mW's    207.2mW's   Meredith glass lens

Again, I just do not want to miss label lasers that I am selling. I think that my meter (which I got new, from DDL's last GB) is a good meter, I just need to find the correct multiplier for the 405nm conversion...
Thanks much!
Jay

I have a 6x diode, aixiz acrylic, rkcstr driver, 170mA, and when it warms up all the way it will tap 190mW as measured on a scientech 364 meter

GooeyGus said:

I have a 6x diode, aixiz acrylic, rkcstr driver, 170mA, and when it warms up all the way it will tap 190mW as measured on a scientech 364 meter

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Thanks GooeyGus! This is good information already. Not sure of exactly what percentage of increase for the blu-rays when comparing the AixiZ acrylic vs the Meredith glass (my 6 X build). But the increase is 30% when comparing Meredith acrylic to Meredith glass.

I'll bet your 170mA 6 X would put out at least 228mW's with a Meredith glass. That's only figuring a modest 20% increase.

Also, your 6 X @ 170mA's vs my 6 X at 140mA's tells me that a multiplier of 2.0 may be a little low. Because of the difference in lenses!
Jay

Well I know that its damn near 250mW without a lens!! :'( :'(

so much power being wasted :'( :'( :'(

GooeyGus said:

Well I know that its damn near 250mW without a lens!!  :'( :'(

so much power being wasted  :'( :'( :'(

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Yeah...170mA's! Wow.

In comparison to my 6 X @ 140mA's. Figuring about 1mW per mA (which is what Lava's graph looks like), that means you would probably be measuring about 160mW's through your acrylic lens if you turned it down to 140mA's.

Which means, my multiplier of 2.0 is probably a little low, because that's what I am getting at 140mW's using a Meredith glass lens!

From this first comparison, I think that a multiplier of 2.3 is probably pretty close. This would put my 6 X at 183.3mW's using the Meredith glass lens @ 140mA's. (this scenario, would mean about a 15% increase from an AixiZ acrylic vs a Meredith glass)

Now to get some more comparisons!

Come on guys!
Jay

Thats exactly what I was thinking jay, somewhere right in the middle of 2.0 and 2.6 as one seemed a bit low and the other a bit high.

GooeyGus said:

Thats exactly what I was thinking jay, somewhere right in the middle of 2.0 and 2.6 as one seemed a bit low and the other a bit high.  

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I think it is very close at a 2.3 multiplier! I used the 2.3 multiplier on this build, and it is right in line with Lava's graph. He used the same lens as well.


http://www.laserpointerforums.com/forums/YaBB.pl?num=1210649211
Jay

After retesting my 803T build I confirmed that it is quite powerful. I got a solid 180.5mW out of it after letting it peak and settle down a bit. It peaked at about 186mW or so. It's running at 145mA using a rcktsr driver, Meredith glass lense, and of course jayrob's heatsink.

[quote author=climbak link=1213683861/0#7 date=1214010228]After retesting my 803T build I confirmed that it is quite powerful. I got a solid 180.5mW out of it after letting it peak and settle down a bit. It peaked at about 186mW or so. It's running at 145mA using a rcktsr driver, Meredith glass lense, and of course jayrob's heatsink.


Nice! I'm driving my next one at 190mA

Peace,
dave

Wow! I can't believe you guys are pushing the 803T diodes so high!

That's some good information there climbak! Thanks for posting here. It shows how much the Meredith glass can help too!
Your results here confirm that my adjustment to a 2.3 multiplier, is very close. Even though it is a different diode then my 140mA build, it is right in the ballpark. Because my 6 X build using the Meredith glass at 140mA's is 183mW's using the 2.3 multiplier for my LPM-1.


Dave, you wild man! Please let us know what the results are! 190mA's?!!!
Jay

Yes dave, hurry. Please! I wan't to find out how hard I'm going to push my next one if I ever get my hands on another 803T.

GGus -- You have pushed my data to the edge but your data looks good.

Mike

Guys -- When you push this high, you're running with the big dogs. Be prepaired to accept failure -- don't blame us.

Hemlock Mike said:

GGus -- You have pushed my data to the edge but your data looks good.

Mike

Guys -- When you push this high, you're running with the big dogs. Be prepaired to accept failure -- don't blame us.

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Can I at least feel silly for a minute before I let everybody know if I blew it up?

Peace,
dave

Sure, but only for a minute.

EDIT: Oh, and my drives have the 803Ts in them. ;D Hello higher currents!

no-way dave it blew??

john_lawson said:

no-way dave it blew??

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NO! NO! NO!

That was a hypothetical question used to point out that I understand the risk.

My 145mW one is gong strong. The 190mA is not built. Although all the parts ARE sitting on my desk right now

climbak said:

Sure, but only for a minute.

EDIT: Oh, and my drives have the 803Ts in them. ;D Hello higher currents!

Click to expand...

I got the last six from Tekgems today. Four of them were/are the silver faced ones. Chris said that the silver faced ones all contained the DT-0811 sled. I was already making plans for them.

I opened the package and saw, "hdwr Ver. 000." ERH?!? I remember what Ver. 000 meant with the HD DVD add on units. Sure enough all four of them had the 803T sled in them

I don't have enough to share or sell, but at least now I do have enough to finish the projects already on my desk **happy dance**

One of them has a damaged faceplate. Do you think I should RMA it?


So, should I build the new blu-ray or crank up one of the green labbys to see what it can do?


I am on the horns of a dilemma

Peace,
dave