STAND AND DELIVER!!! 2 Watts of Red….Out of the Optics Bed!!!

[CDBEAM]

The initial lead for the use of the 405 G 2 with Red was DTR and Solarfire. Thank you Steve for continuining our joint progress. I was hopefull...that with the emitter being close for the 445 and the HL6388MG.....we would... at minimum... be able to duplicate the 445 geometry. Many of us have migrated over to the 445 LD for Blue. Perhaps the Holy Red Grail is with the 6388 ???? Dunno ??? The achievement of producing a Red at 640 nm... with equal beam geometry to the 445 and higher power will be a great leap in making affordable to us projector builders the 5W DIY'er. Just think...in about 5 years....with nano engineering, Quantum Dots and who knows what elso....our highwater mark will be 50 W !!!! As you ALL know...IT NEVER ENDS !!!! All I can add is..." Watch the Skies...Watch the Skies !!! "

BEAM

[kiyoukan]

yea i got 2 300mw diodes coming in the mail on Wednesday.
Cant wait to see what i can do with the beam.
with these plus 1 more green laser i will have a 2W RGB 40k projector

[Stoney3K]

Ok, anything for you guys and the cause.. I ripped the 405G2 lens from my bluey, put a MG6388 LD behind it and here are the results (from my very wobbly set-up): 1mm x ~4mm at the ap, and, at a distance of 100 ft with no prism correction looks to be fast-axis no more that 1-2 [b]feet[b] across...

I sure hope you mean inches. Not feet.

My LED flashlight does a better job at divergence if you really meant 'feet'....

[polishedball]

feet sounds correct with no correction optics.

The c- lens will pull it in to inches.

I sure hope you mean inches. Not feet.

My LED flashlight does a better job at divergence if you really meant 'feet'....

[LaNeK779]

I sure hope you mean inches. Not feet.

My LED flashlight does a better job at divergence if you really meant 'feet'....

wait till you see the mitsu
it does a nice liquid sky effect with no galvos needed

"spot" size around 12cm at 11 meters

[steve-o]

feet sounds correct with no correction optics.

The c- lens will pull it in to inches.

Yeah, stick prism(s) in there with not too extreme of an angle (or c-lens) and wa-laa- nice "dot" just like the 445s. (Should be, anyway.. more experimentation needed.. didn't have time last night..had to get some sleep :| I've been keeping these diodes cranked at over 600 mA for experimentation for a while with no signs of degradation. Looks to be close to 400mW out. Could someone verify this please?

wait till you see the mitsu
it does a nice liquid sky effect with no galvos needed

"spot" size around 12cm at 11 meters

LOL LaNeK Is that the mitsu with a 405G2?

..shit , I meant opnext..
I see where I posted up there MG6388 when I meant HL6388 .. ahh well . .

[steve-o]

Ok-better late than never. The final results testing the HL6388 opnext LD. A cobbled together test jig revealed ~375mw after a prism pair (yes, the pair does work better than a single prism, mybad) @619ma with a 405g2 (which appears to have a very short fl) resulting in aperture beam of 4mm and at 65ft 25mm (FA) Calculates to 1.06 mrad.

[mccarrot]

Am I missing something here or are you extremely overdriving the HL6388?
the HL6388 is a (old) 250mW diode with typical operating current of 340mA. In your setup you give the diode 82% more current then typical.

If we dont overdrive this diode, it would be easier to just knife edge 2x 170mW 637nm opnext diodes. this way you will have 340mW of power instead of 250mW with this diode.

[steve-o]

Am I missing something here or are you extremely overdriving the HL6388?
the HL6388 is a (old) 250mW diode with typical operating current of 340mA. In your setup you give the diode 82% more current then typical.

If we dont overdrive this diode, it would be easier to just knife edge 2x 170mW 637nm opnext diodes. this way you will have 340mW of power instead of 250mW with this diode.

Yes, I am stress-testing this LD similar to what we are doing with the diodes over on the Mitsu ML520G1 thread. I have run this diode for hours at this current level with passive cooling and have seen no signs of degradation or pwr loss. I was asked to do a test on this LD w/ the 405G2 lens and post the results. So there they are

[SrS]

Am I missing something here

The HL6388 is available for €45