635nm correction optics GB

[steve-o]

Yes, thanks everyone who contributed!!!
Btw, I swapped the G71 for the P73 today in my 'test-rig' and the results look very promising.. will post them as soon as I can..

[CDBEAM]

well, to be honest, i think the first one to get any usable results out of this one was logsquared

of course this was not a race, it was just a collective effort to get PHOTONS FOR ALL!!!

and it is clear that we have all suceeded!!!


ps. cdbeam, crazy post. excellent! i liked it!!

Yes...Logsquared was another PL'er who propelled us along in a big way, MANY members have added additional pieces to the puzzle. A big thanx to all who have stayed the course !!!

And, Yes....The Crew at Terrawatt Labs are ALL a Photonic Wet Dream !!! Expect more good things from them !!!

Steve...Hot on the P73 trail too !!! Hoping for good results outa the Glory Hole with a G71-P73 " BEAMOFF "

CDBEAM

[andyf97]

Well, I'd like to say hats off to 2 geniuses, Dave, for the 2mm micro-lens (where did you find this lil monster?? it's awesome.. do you have a optics group of engineers at your disposal??)

Yeah here on PL called andyf97, who else do you think told him about the 2mm FL. Dave just sourced it and copied the mount I also posted on the grail thread.
No genius required when copying or reading posts.

And the founder or finder of the 6X lens.. Kiyoukan- that was you, right?

Yup Kiyoukan.

Oh and 3.. excuse me Dr.Lava.. You 1st introduced the PCX PCV combo for the 'new reds' ... 3 cheers for 3 awesome guys. I know I've left a lot of people out of this equation, but just had to say ...

What did Andrew contribute here for red, blue indeed but trying drlavas correction lenses was tried very early in the grail thread.

Anyway. Its just good that solutions are being found no matter who helped to do it. LET'S SEE SOME RESULTS NOW!!

[andyf97]

Solarfire first mentions going to a 1:4 or 1:5 magnification in post #38 of the epic " Grail" thread...and Andyf97 first noted great results by going with a very short length fL for the collimation lenses. They are guilty of leading us down the rabbit hole !!! THANX to them also !!!!!!!!!!!!!!!!!!! BEAM

HAHAHAHA, Guity, as charged.
http://www.photonlexicon.com/forums/...903#post209903

[steve-o]

Ok, there were a lot of people here who deserve a lot of credit (who I didn't mention in my post .. so solly .. ).. Now, on to the P73 results..
Again, a thrown-together test rig for reference only, and lens adjustment not perfect ..
Test Rig:

Aperture:

Beamshot:

At 114 ft:

Power:


Driving this diode at 826mA (just barely above spec-sheet max,) with this lens placement the aperture appears to be 1.5x3mm and farfield at 114 ft looks ato average 55mm which would put it at 1.49 mRad. Adjusting to a larger aperture beam size should bring the divergence down to a better figure. Some people have had good luck (I believe) driving the P73 at 1 Amp which would significantly increase Po. I took the easy route and pressed this into an aixiz module, I used the exact same lenses as previous test above, and my power measurements are for reference only, being as this is an uncalibrated homebrew meter. Hope this info is of interest

[andyf97]

Great photos Steve, 1.5x3mm at aperture is very ok for improvements, even then 1.5mrad is average and perfect for most green matching and I suspect 4 diodes will go together quite easily.

[steve-o]

Thanks Andy. Yeh I am having high hopes for the -P73, despite its higher price-tag. Some have reported increased stability at higher current/ temperatures, and the beam seems nice for a "90-100uM emitter" (I haven't seen that emitter size 100% verified yet tho iirc.) Also, not to mention the possibilities of 'overdriveibility' of this one :]

[planters]

This does look promising. Spend either $200 or $400 on the diodes alone for a quad red and now it does seem as if everything else is the same. The divergence/beam size does appear to be close enough to the G71 that the difference will be as likely to come from the set up quality as from the underlying differences in the emitter size. This also means that the P73 can be considered an upgrade route rather than a whole new project. Thanks for the pics.

[steve-o]

You're welcome. Anytime. I like to contribute when I can.

As far as Andy's comment, yes now I remember you discovering the micro-mystery lens in an assortment of lenses that you had. You deserve big credit too. Sorry I didn't put you in the post. I cant remember much these days. The ole brain-cells ain't wat they used ta be ..

[badger1666]

nice one steve-o been waiting to see these results
i will be getting some of these me thinks