445nm Laser Diode Compilation Thread

[ossumguywill]

Re: 445nm Casio Laser Diode Compilation Thread

That's not it coherent-wrong can size. I haven't seen a datasheet yet though, I'm not sure if an official one has been posted.... :thinking:

 

[rev0]

Re: 445nm Casio Laser Diode Compilation Thread

That's not it coherent-wrong can size. I haven't seen a datasheet yet though, I'm not sure if an official one has been posted.... :thinking:

It was discussed that perhaps it's the same chip, but put in a 5.6mm can specifically for the projector. The other specs sure seem similar though.

 

[Coherent Light]

Re: 445nm Casio Laser Diode Compilation Thread

That's not it coherent-wrong can size. I haven't seen a datasheet yet though, I'm not sure if an official one has been posted.... :thinking:

ossumguywill:

I ran across a couple of website that have done a lot of work with this Diode. such Mode Stability, and Beam shaping and collimation.

Here is a Quote from one of Them.

"It seems that these diodes have the same data as the Nichia NDB7352 1W 445nm diode, except for the 5.6mm case"

Don't know how true it is, but it seems plausible.

 

[ossumguywill]

Re: 445nm Casio Laser Diode Compilation Thread

Ahh got it, thanks!

 

[jmgallego]

Re: 445nm Casio Laser Diode Compilation Thread

... I used some thermal tape to achieve good thermal contact and to isolate it electrically.
It works just great, current is stable, chip doesn't overheat.
...

What kind of thermal tape do you use?

Thanks!

 

[dnar]

Re: 445nm Casio Laser Diode Compilation Thread

It was from a XJ-A140, the power is output power in the emitted beam, without a lens. I will put some more videos on you tube soon, among others, probably one on how to fix the beam to make it a round dot. 0.707 is the RMS integrating number,it turns up in math a lot for everything from calculating AC power to engineering fatigue ratings to calculating the minimal optical damage threshold of laser diodes.

Just recapping, in an excellent heatsink (lab style) what do you consider to be the maximum drive current for long CW life for both 130 and 140 diodes?

Cheers.

 

[sk8er4514]

Re: 445nm ***** Laser Diode Compilation Thread

Just recapping, in an excellent heatsink (lab style) what do you consider to be the maximum drive current for long CW life for both 130 and 140 diodes?

Cheers.

1000mA

-Kendall

 

[HIMNL9]

Re: 445nm ***** Laser Diode Compilation Thread

Just recapping, in an excellent heatsink (lab style) what do you consider to be the maximum drive current for long CW life for both 130 and 140 diodes?

Cheers.

I still have the "guinea pig" one in the torture chamber ..... it's working more or less "thermally stabilized", continuously at 1,6A, 10S on / 10S off ..... from 30/06/2010, 24/7, now ..... and til now it show no power degradation .....

 

[ped]

Re: 445nm ***** Laser Diode Compilation Thread

^^ i think thats passed its test....get it outta there the poor thing haha

 

[HIMNL9]

Re: 445nm ***** Laser Diode Compilation Thread

^^ i think thats passed its test....get it outta there the poor thing haha

LOL, i know ..... i started this trial, thinking to made a "degradation plot" chart for those diodes ..... but til now, almost no degradation (well, maybe 5% in all the time ..... not too much for build a curve, you know ..... probably i had to choose higher currents at the beginning) ..... it's still there doing on and off all the time, and i'm wondering how much it still go ..... or wondering if will last more the diode, or the "torture chamber" itself, now .....

 

[ped]

Re: 445nm ***** Laser Diode Compilation Thread

Ive said it before, these diode were made by Chuck Norris , apart from being stupid with them, thier indestrctable.

I was setting the driver on my 12x build, and the pot "spiked" = dead diode , it must have been 1ms.

Try doing the same with a c@$io diode...it will just laugh at you, and burn you.

 

[HIMNL9]

Re: 445nm ***** Laser Diode Compilation Thread

Well, no, i have already burned one, with a similar error (but is the only one. til now) ..... i confused once a 0,33 ohm resistor with a 0,033 ohm one, in the hurry, and "flashed away" the diode (well, at 16A, instead 1,6, it flashed for less than half second, then just died, the chip wires are melted)

For the opposite (but i strongly suggest to NOT try this intentionally ), i had one reversed, once ..... and turned on and off it for 3 times, too, before realize that it was reversed ..... this usually means instant death, but, for curiosity, before throw it away, i tried to reconnect it in the right sense, and * miracle, miracle * , it still work ..... no degradation in the power and no strange spots in the beam image ..... i don't know how, but it survived to reverse powering .....

still i DO NOT suggest to retry that, to anyone ..... this may also be the one-case-on-a-million where this happens .....

 

[Bluefan]

Re: 445nm Casio Laser Diode Compilation Thread

Lucky you, I lost more than half of the power by an accidental reverse polarity, but this diode had a weird low power to begin with. My A130 now gives 150mW at 800mA.

 

[Toaster]

Re: 445nm Casio Laser Diode Compilation Thread

Is it "Zombie" Or only have certain lines that light up?

 

[Serveurperso]

Re: 445nm Casio Laser Diode Compilation Thread

hi all,

I need two "like-new" stripped projector / removed LD module -> only 3 + 3 screws manipulated (no scratches...). PM me, I use paypal... thanks

I just get two casio A135 complete laser module, and 1 driver PCB + 1 red Phlatlight !!!!

Does someone try to power the complete driver PCB + laser diode array + Phlatlight out of the projector motherboard ? Seven + RED wire and Seven GND BLACK wires and one more black (power good/test ?),

Happy end of year
Pascal

 

[Kevlar]

Re: 445nm Casio Laser Diode Compilation Thread

I just get two casio A135 complete laser module, and 1 driver PCB + 1 red Phlatlight !!!!

l

How did you get just the laser module? Did you get the whole laser array for 24 diodes? Where did you purchase them?

Inquiring minds want to know. :yh: