So far I have been happily impressed, it's basically 3 element performance with close to G2 power transmission and it's been surprisingly clean as far as overspray and artifact, I think the longer FL helps in this area too, granted with multi mode diodes you will at times such as at night/low light see some light aberrations closely adjacent to your spot but it's much better than the 3 element which has multiple sets of aberrations that can make it harder to see when you have a sharp focus when looking through laser safety glasses at night and at distance especially when used with a beam expander.
Not saying that any lens is perfect, but the G8 has advantages and I plan to use a lot of them in place of 3 elements.
That is awesome. I have been working on getting these for a bit and gone through quite a few different variations to find this balance. I do hope these will work for a lot of different applications and be more of a one size fits most type lens.
OK, wasn't sure you were aware of it. I ordered five
I want to order two NUBM44 V2 diodes in a mount without a driver or lens too, but might be awhile. Tried to find your shop on Amazon, doesn't appear you have one there anymore. Just wanted to order from there to give more feed back.
Chris
Thanks. Always appreciate a heads up if noting something I have up that might not be right on the site.
Got plenty on my site and ebay. As for Amazon right before I came to the realization I had to bring someone in to help with the grind work I was falling behind on timely replies to customers as some may remember... Dropped the ball on a few customers not getting replies withing the 24 hour period and they negged me(deserved) so amazon restricted me to FBA till I submitted an business plan that addressed the issues. FbA is not feasible for my products due to the varying customization and build to order so put them on hold to get someone on board and all trained up. Now Auggie is working mostly without a net I did put in a plan asking to reactivate last week but they will probably want me to do a lot of hoop jumping before they go back to seller fulfilled. Almost anything can be taken care of with communication. That is key.
Anyway hope to have it back up but if they do is up in the air right now.
Thank you, Jordan. I saw in my email that you had sent me something, but I didn't get any updates so I was waiting to see. I appreciate you including me in testing these new lenses.
No problem appreciate the spectro work on the diodes coming with them.
He sent you samples??? Where’s my free samples!
Wow....just Wow !!!
This lens (G8) will heretofore be named...." The Ghost Buster "....for....it removes the Ghost box from the venerable NDG7475 Farfield !!!!....It completely removes a G2 Ghost Box......And.....gives a nice spot geometry at 20M.....and has the same power output as the G2.
What the Hell ???????????...….This violates a basic rule of Optics (In my book).....by delivering a much better beam........ WITH NO DOWNSIDE !!!!
I am shocked !!!
I will now probably switch my planned EDC build to a NDG7475 + G8....
The final test.....the 63193 and the AA2 Reds !!!!
I will test those in the next few days....I predict, this lens will give a good beam....with the AA2....and need no further optics !!
BUT...I bet....the 63193 will still need C-lens corrective optics ?????
The 63193 and the 044 are the WORST in Farfield divergence for raw output......HMMM....think I will try the G8.....on an 044 also...…" IT COULD WORK ".....but....I doubt it !!…...Might correct the NUBM07 though ??????? with NO further optics..... Dunno ????
Thank you DTR !!!!!!!!!!!!!!!!!!!!!
CDBEAM
Yea I was skeptical it was possible when they said they could come up with something that could clean up the stray light as well s make a nicer spot and keep a fairly high pass rate but here we are...
I think the G-2 will still have a place if the G-8 while it might draw reduce the line length for situations where use of a cylindrical lens set is used the G-2 might be collimating the line much sharper. If it is thicker but not as elongated when the cylindrical lens set pulls the wide axis in you might still have a smaller spot with the G-2. So like show projector applications might still use them to get the best spot but certainly they seem to be a winner for any system where you only will have the collimaiton lens and no other optics.
On divergence I have wanted to post something up as I do sometimes talk to customers that after reading on this forum come away with an impression that a smaller spot achieved at a specific distance always means there was a reduction in divergence or at least just a reduction in divergence though an optic is the only factor in reducing spot size or more importantly power density. I have always felt the divergence change from a three element lens to a G-2 is minimal as well as the power density.
Divergence being the rate of expansion calculated by using beam size at two points and the distance between them. This is a scenario I picture using a pinhole method to create a smaller spot at a given distance. In this picture there is a zero difference in divergence and zero gain in power density.
I realize this might not be totally accurate real world as the core of a beam might have some slight differences in divergence than the outside which could result in divergence change lower or maybe even higher divergence when using this pinhole Technic. There is a lot of clipping in some lenses that accounts for in the case of the three element lens at least most of the spot size reduction but there is for sure some change in divergence as well I just don't think that is that great. So some customers seeking higher power density might take smaller spot or a statement of "best" "better" divergence when comparing different collimators as which one will give the best power density for their application. I am not a optics expert when it comes down to stuff like divergence or just optics in general so am open to any thoughts on how I see this. Just want to make sure terms like these are being conveyed most effectively.
With even a slight chance of getting stuck in Atlanta my layover if the flight into St. Louis got delayed or canceled due to the weather I decided to change my flight and stay in sunny Florida for a couple more days. Auggie will be plugin away with orders though. So nice to be able to do that without everything coming to a stop. STL got several inches and temps were supposed to drop to 7 degrees tonight. Chilly....
