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Old 04-07-2012, 03:13 AM #1
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Default 405 g 1 vs 405 g 2 ?????

i'm new in the lasers and i want to now which of these amazing lanses is the best.
(pros and cons)


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Old 04-07-2012, 03:28 AM #2
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Default Re: 405 g 1 vs 405 g 2 ?????

They are pretty much identical. Hardly any differences either way.
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Old 04-07-2012, 05:11 AM #3
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Default Re: 405 g 1 vs 405 g 2 ?????

Yes. Identical. G-1 uses a different AR coating and gives like 10mW more but that's practically nothing.

Last edited by RyanElectro; 04-07-2012 at 05:11 AM.
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Old 04-07-2012, 05:23 AM #4
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Default Re: 405 g 1 vs 405 g 2 ?????

Pretty much the same lens
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Old 04-07-2012, 07:15 AM #5
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Default Re: 405 g 1 vs 405 g 2 ?????

Yes pretty much the same optic, but the mounting is different...

Here's a couple of facts about the lenses to help you understand about some of the differences in pricing...

The 405-G-1 glass lens that I sell, is the same as the G2. The only difference, is that the G2 is from a different supplier. Slightly different coating. But the exact same lens design. Same output potential. I tested the G2 long ago, and if was any better, then I would have changed over.

The real difference, is in the mounting of the lenses. I mount my lens assembly into a machined out AixiZ nut, and also enlarge the entry aperture to allow maximum light from the diode into the lens.


The G2 from DTR is a few bucks cheaper than my G1 assembly, but it is not mounted the same. His is basically just put into the bottom of the lens nut, and held in place with the tiny threaded retaining ring. So in other words, the retaining ring is the entry aperture, and is not enlarged. (like I do with my modification)

That said, it's still a good set up for the price.





Here are the main reasons that I go through the extra work for my mount:

* Able to enlarge the entry aperture and allow more light from the diode into the lens
* Able to set the lens 'lower' in the nut, so that it can get closer to the diode if needed
* The lens is perfectly centered in the nut (if just mounting it in the retaining ring end of the nut, there is a possibility that it can get off center)

As you can imagine, there is a lot more work involved with the way I mount the lens.

* Machine the lens nut to fit the diameter of the lens
* Enlarge the entry aperture
* Make the custom sleeve/retainer tube that is shown in my picture above...

I spend quite a bit of extra time for the mounting of my set up, and thus the extra cost...
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Personal lasers:
(just a few - too many to list) RPL 425, Sypder III Krypton, RPL 35 (473), GLP-473, GLP-593.5, HeNe 632.8,
Many DIY 445, red, blu-ray, green, 635, and 450 builds...


Looking for a DIY kit?


Take a look at some of my more popular kits linked in color...

* FS: 405-G-1 Glass Lens Mod for Blu-ray! 31% increase in power vs AixiZ acrylic!

* FS: New! 1000 Lumen XML-2 Maglite Modification With Voltage Monitor! - Parts or Complete Light! Must see!

* FS: Polished Stainless Steel Green Kit! Easy assembly in minutes!

* FS: Large Maglite Monster Kits! Side Button Forward Clicky! Custom Head Option! Gnarly...


Click here for a list of my build kits! Projects and tutorials too!


Last edited by jayrob; 05-13-2012 at 04:32 PM.
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Old 04-07-2012, 12:54 PM #6
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Default Re: 405 g 1 vs 405 g 2 ?????

Quote:
Originally Posted by jayrob View Post
Yes pretty much the same optic, but the mounting is different...

Here's a couple of facts about the lenses to help you understand about some of the differences in pricing...

The 405-G-1 glass lens that I sell, is the same as the G2. The only difference, is that the G2 is from a different supplier. Slightly different coating. But the exact same lens design. Same output potential. I tested the G2 long ago, and if was any better, then I would have changed over.

The real difference, is in the mounting of the lenses. I mount my lens assembly into a machined out AixiZ nut, and also enlarge the entry aperture to allow maximum light from the diode into the lens.


The G2 from DTR is a few bucks cheaper than my G1 assembly, but it is not mounted the same. His is basically just put into the bottom of the lens nut, and held in place with the tiny threaded retaining ring. So in other words, the retaining ring is the entry aperture, and is not enlarged. (like I do with my modification)

That said, it's still a good set up for the price.

I spend quite a bit of extra time for the mounting of my set up, and thus the extra cost...
thanks man
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Old 04-11-2012, 02:48 AM #7
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Default Re: 405 g 1 vs 405 g 2 ?????

From laser66 (a seller of g1/g2 lenses)

G-2 has a multi- layered Anti- Reflective (AR) coating- a down shifted A coating.

The G-1 has a single layer, MgF2 (Magnesium Fluoride) AR coating.
On paper, the G-2 gives about a 1/2 of 1% reduced reflection: 0.005 lower reflection.
In practice, with high powered diodes, it's nearly impossible to measure the differences. It's beyond the accuracy of even the best power meters.
405-G-X, where X is a manufacturer, so each lens is from a different manufacturer, but each lens is essentially the same design/ shaped glass
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Old 04-11-2012, 03:35 AM #8
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Default Re: 405 g 1 vs 405 g 2 ?????

Yes that's absolutely correct...

And if I had found that the G2 optic was any better in even the slightest way, then I would have switched over long ago. I was the one that tested the G2 for Will, and compared it with the G1.

Since I found no difference, I kept the same optic.

As I showed above , the difference is in the way the optic is mounted. Here are the main reasons that I go through the extra work for my mount:

* Able to enlarge the entry aperture and allow more light from the diode into the lens
* Able to set the lens 'lower' in the nut, so that it can get closer to the diode if needed
* The lens is perfectly centered in the nut (if just mounting it in the retaining ring end of the nut, there is a possibility that it can get off center)

As you can imagine, there is a lot more work involved with the way I mount the lens.

* Machine the lens nut to fit the diameter of the lens
* Enlarge the entry aperture
* Make the custom sleeve/retainer tube that is shown in my picture above...
__________________
Personal lasers:
(just a few - too many to list) RPL 425, Sypder III Krypton, RPL 35 (473), GLP-473, GLP-593.5, HeNe 632.8,
Many DIY 445, red, blu-ray, green, 635, and 450 builds...


Looking for a DIY kit?


Take a look at some of my more popular kits linked in color...

* FS: 405-G-1 Glass Lens Mod for Blu-ray! 31% increase in power vs AixiZ acrylic!

* FS: New! 1000 Lumen XML-2 Maglite Modification With Voltage Monitor! - Parts or Complete Light! Must see!

* FS: Polished Stainless Steel Green Kit! Easy assembly in minutes!

* FS: Large Maglite Monster Kits! Side Button Forward Clicky! Custom Head Option! Gnarly...


Click here for a list of my build kits! Projects and tutorials too!


Last edited by jayrob; 04-11-2012 at 03:37 AM.
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