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I assumed they are binning info.
dont think it matters much...might as well have been stamped "this garment approved by B6"Quote:
Originally Posted by mpoulton
EDIT-----interesting......................................
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"I also want to know: How the hell do you sleep at night knowing that you are supplying WickedLasers?"
hate to sound like a rep , cos i aint , but i appreciate their innovations for the future ..... with the smartswitch and low power lens and safety glasses the WL product is going to be the safest out there ! The loads of hobbyist and builders selling hand held 445nm with no safety features ...yes its maybe just horrible that they are out there in the first place but so are guns and landmines ..it was gonna happen someday ...and at least WL have made an attempt at safety
As regards array marking ..really aint got a clue
paul
@"Smart switch" - Load of cobblers...
@Diodes - check the part no...
From what I understand about these markings: the arrays are tested and graded according to output, I assume this is done by the diode array supplier so the projector batches have some consistency, could also be related to a production line reference. Apparently the 140s have far better diodes than 130s.Quote:
Originally Posted by mpoulton
Slope efficiencies...
I will add that most of my XJ-A140's have had a B code on them, precisely one of them had an A code. They also have a number written in sharpie elsewhere on the array, usually 17
Has anyone else noticed significant variation in the output power for diodes across an array? I thought some of them looked a little dim, so I took IU curves for an array and was amazed at the spread
Attachment 19045
There is some slight variation due to the test, but after spot checking a few diodes I would say its within ~+/-25%, so the factor of 2 difference is disturbing
There is some slight variation due to the test, but after spot checking a few diodes I would say its within ~+/-25%, so the factor of 2 difference is disturbing[/QUOTE]
Is this really +/- 25% or do you mean +/- 2.5% cos if not a factor of 2 would be kind of statistically fairly reasonable.
For same diode at -25% say 750mw and different test +25% = 1250mw.
So a <20% real variation between diodes could give this result.
Unless I am missing something here!
What are the units of the Y axis labeled x.00E.400 ? :confused:
In fact there is much more reported variation posted all over the place though most will be due to other factors ie. driver current and optics setups.
Probably the unkoolled "pointers" with extra high power >:) will be used a lot to pop thousands of balloons and acquire somewhat less power as a result.*vigil
Anyone interested in starting a black balloon GB just to make sure ? :D
Anyone got any max TEC hysteresis recommendations for collimator blocks. I have to decide whether to use indium solder paste in loose mounts or whether this is total "overkill" . :cool:
Cheers! :)