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Old 09-12-2015, 06:14 AM #33
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Default Re: New G7 lens for 445nm / 462nm / 520nm

Check my gallery: Podo 's Library | Photobucket

It's our stock 4.5mm holder with G7.

The 9mm will looks similar, imagine it with a longer barrel.


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Old 09-12-2015, 08:15 AM #34
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Default Re: New G7 lens for 445nm / 462nm / 520nm

In one of the pictures on your gallery it shows that 2 beam red Mitsubishi diode and it looks like you got both beams to sit parallel to each other. Is this just an illusion or are they actually parallel? If so I would like to know how you managed that?
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Old 09-12-2015, 08:55 AM #35
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Default Re: New G7 lens for 445nm / 462nm / 520nm

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Originally Posted by Glutton View Post
In one of the pictures on your gallery it shows that 2 beam red Mitsubishi diode and it looks like you got both beams to sit parallel to each other. Is this just an illusion or are they actually parallel? If so I would like to know how you managed that?
He posted about that in this other thread: THIS IS MADNESS - Mitsubishi 639nm 3W "Twin buster" Updated Output test
It was a 5x beam expander that did it.

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Old 09-12-2015, 08:58 AM #36
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Default Re: New G7 lens for 445nm / 462nm / 520nm

Thanks : )
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Old 09-15-2015, 11:36 AM #37
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Default Re: New G7 lens for 445nm / 462nm / 520nm

I'd really like to see a comparison photo of the dots at a distance (maybe 10 or 20m) with G2, 3 elements and this lens. Could be with a NDB7875. I want to buy one to test it out but I'd really like to see what the splash/divergence looks like first.
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Old 09-15-2015, 11:59 AM #38
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Default Re: New G7 lens for 445nm / 462nm / 520nm

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Originally Posted by Atomicrox View Post
I'd really like to see a comparison photo of the dots at a distance (maybe 10 or 20m) with G2, 3 elements and this lens. Could be with a NDB7875. I want to buy one to test it out but I'd really like to see what the splash/divergence looks like first.
I have some ordered from last week, the focal length is supposed to be around 8mm so I'm expecting the lens will be wider at the rear opening, but we shall see, still if it's a longer FL single element it has great possibility to extend useful range, YES the rear opening looks wider

WOW Nice pics, nice round dots, if you are bringing those expanders, 5mode drivers and the rest to the market them I'm excited

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Old 09-16-2015, 12:16 PM #39
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Default Re: New G7 lens for 445nm / 462nm / 520nm

I'm watching this thread too. Very interested in how they perform. Spent about an hour looking at the site yesterday. Wish that tri-beam wasn't so much $. Can't seem to get it out of my head.
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Old 09-16-2015, 02:07 PM #40
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Default Re: New G7 lens for 445nm / 462nm / 520nm

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Originally Posted by Pman View Post
I'm watching this thread too. Very interested in how they perform. Spent about an hour looking at the site yesterday. Wish that tri-beam wasn't so much $. Can't seem to get it out of my head.
The diode costs around $130 alone so the price can't really go lower.
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Old 09-16-2015, 02:11 PM #41
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Default Re: New G7 lens for 445nm / 462nm / 520nm

Quote:
Originally Posted by Atomicrox View Post
I'd really like to see a comparison photo of the dots at a distance (maybe 10 or 20m) with G2, 3 elements and this lens. Could be with a NDB7875. I want to buy one to test it out but I'd really like to see what the splash/divergence looks like first.
I wish I could but the best camara I can get is my Xperia Z ultra which unable to take a clear shot of the dot no matter how I tried. The dot is clean like 3-element lens IMO. We ain't switch our 3-elements to G7 for no reason.

Edit: I may try with iphone 6 later.
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Old 09-16-2015, 05:11 PM #42
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Default Re: New G7 lens for 445nm / 462nm / 520nm

Try underdriving the diodes to get a lower power or placing not-so-good laser goggles in front of the camera.
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Old 10-12-2015, 08:18 PM #43
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Default Re: New G7 lens for 445nm / 462nm / 520nm

The G7 will fit the 9mm spring, it is a close fit but it will fit.





These were taken at 14 feet and focused as well as could be ahead of taking the pics.
Both lasers are NDB7875's the slightly wider spot is the G7 the narrower is the 3 element, they are close at 14 feet but the G7 is slightly wider.

In the top pic the 3 element is on the left and below in the middle pic the 3 element is on the right.


This is the same triangle cut piece as above only without the amber safety glasses in front of the camera and the lasers are off of course.

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Old 10-12-2015, 10:40 PM #44
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Default Re: New G7 lens for 445nm / 462nm / 520nm

Why do they need external springs? Internal ones won't fit?

What I'd really like to know is how much splash gets through. G2's splash looks very bad with some lasers (e.g. NDB7675), specially at low power. I'd love if you could post some side by side dot pictures at a distance.
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462nm: 501B by Atomic (1507mW avg)
473nm: BWB-10-OEM labby by CNI (10mW rtd)
520nm: MXDL pen by DTR (31.6mW pk|28.8mW avg)
532nm: NewWish (28.6mW pk|26.8mW avg|10mW rtd) | Dapper (30.3mW pk) | Classic (120.0mW pk|103.1mW avg|100mW rtd) | "The Green Box" by Atomic (176.7mW pk|140.0mW avg)
589nm: Spartan from Dragon Lasers (58.4mW pk|37mW avg|50mW rtd)
632.8nm: HeNe pointer by Atomic (0.68mW rtd)
635nm: NewWish (4.6mW avg|5mW rtd)
638nm: Classic from Lazerer (409.3mW pk|389.4mW avg|415mW rtd)
650nm: NewWish (10.6mW pk|5mW rtd) | Dilda (216.3mW avg|200mW rtd)
685nm: laser-in-a-box by Atomic (30.4mW pk|29.3mW avg) | 501B by Atomic (32.4mW avg)
780nm: module (2.7mW avg|5mW rtd)
808nm: Classic modded from a 532nm (162mW avg)
850nm: module (8.8mW avg|7mW rtd)
980nm: NewWish (81mW pk|5mW rtd) | 2nd line around 490nm

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Old 10-13-2015, 12:32 AM #45
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Default Re: New G7 lens for 445nm / 462nm / 520nm

To be fair I switched lenses into each others laser and the results are no different, both NDB7875's performed the same.
The G7 was slightly wider in both lasers than the 3 element when focused at 14 feet.

Looking at the far field focus the G7 is pretty close to the 3 element and at 2-6 feet the G7 pops out a flame kernel a little better than the 3 element.

The G7 does focus near the end of the threads of the standard 12mm module.


Focused to infinity the G7 IS NEAR THE END OF THE MODULES THREADS, but it's working now that I am using the 9mm spring.

I was mistaken, the 9mm spring will work, it's just a close fit.

In my defense the focus is touchy, a tiny movement makes a big difference.
These G7's are a lot like single element - 3 elements. They are a little stronger up close but they focus near the end of the threads.

Now that I discovered I was wrong about the 9mm spring, it will fit the G7 I see that the G7 focuses just about the same as the 3 element, but it burns a little better up close, a flame kernel pops out a little easier with the G7 and at far field they look the same focused to infinity.


In my defense it was hard to get a fair assessment of the G7 without using the spring because like single lenses they can be touchy, with the spring it seems to be a little bit stronger 3 element type range of focus via of a single element.

It may be that some of what's clipped by the 3 element gets through the G7 and with less glass more power as well.
Now we just need someone with a LPM to test them and give us some numbers.

Last edited by RedCowboy; 10-16-2015 at 07:10 PM.
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Old 10-13-2015, 03:28 PM #46
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Default Re: New G7 lens for 445nm / 462nm / 520nm

Those are some awesome pics
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Old 10-13-2015, 10:10 PM #47
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Default Re: New G7 lens for 445nm / 462nm / 520nm

Quote:
Originally Posted by RedCowboy View Post
To be fair I switched lenses into each others laser and the results are no different, both NDB7875's performed the same.
The G7 was slightly wider in both lasers than the 3 element when focused at 14 feet.

Looking at the far field focus the G7 is pretty close to the 3 element and at 2-6 feet the G7 pops out a flame kernel better than the 3 element.

The G7 does focus near the end of the threads of the standard 12mm module.


Focused to infinity the G7 IS NEAR THE END OF THE MODULES THREADS, but it's working now that I am using the 9mm spring.

I was mistaken, the 9mm spring will work, it's just a close fit.

In my defense the focus is touchy, a tiny movement makes a big difference.
These G7's are a lot like single element - 3 elements. They are stronger up close but they focus near the end of the threads.

Now that I discovered I was wrong about the 9mm spring, it will fit the G7 I see that the G7 focuses just about the same as the 3 element, but it burns better up close, a flame kernel pops out easier with the G7 and at far field they look the same focused to infinity.


In my defense it was hard to get a fair assessment of the G7 without using the spring because like single lenses they can be touchy, with the spring it seems to be a stronger 3 element type range of focus via of a single element.

It may be that some of what's clipped by the 3 element gets through the G7 and with less glass more power as well.
Now we just need someone with a LPM to test them and give us some numbers.
Agreed, we also need some pictures of the G7 compared with the G2. Great idea for the LPM; we might have a better idea on what the G7 outputs.

I was trying to decide on what lens I should get for my M140 project, something which looks good but packs punch. The G7 seems like a good choice because of that clean dot that the G7 gives.

Last edited by Dreadnought; 10-13-2015 at 10:15 PM.
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Old 10-13-2015, 10:18 PM #48
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Default Re: New G7 lens for 445nm / 462nm / 520nm

Thanks for the pictures, but I'm still wondering about the splash :P
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405nm: NewWish (29.1mW avg|5mW rtd) | Dilda (81.5mW avg|200mW rtd) | 501B by Blord (633mW pk)
low 445nm: C6 from Survival Lasers (1351mW pk|1289mW avg|1100mW rtd)
high 450nm: NewWish (12.6mW pk|5mW rtd) | Dominator by Blord (3010mW pk|2779mW avg during 5min)
462nm: 501B by Atomic (1507mW avg)
473nm: BWB-10-OEM labby by CNI (10mW rtd)
520nm: MXDL pen by DTR (31.6mW pk|28.8mW avg)
532nm: NewWish (28.6mW pk|26.8mW avg|10mW rtd) | Dapper (30.3mW pk) | Classic (120.0mW pk|103.1mW avg|100mW rtd) | "The Green Box" by Atomic (176.7mW pk|140.0mW avg)
589nm: Spartan from Dragon Lasers (58.4mW pk|37mW avg|50mW rtd)
632.8nm: HeNe pointer by Atomic (0.68mW rtd)
635nm: NewWish (4.6mW avg|5mW rtd)
638nm: Classic from Lazerer (409.3mW pk|389.4mW avg|415mW rtd)
650nm: NewWish (10.6mW pk|5mW rtd) | Dilda (216.3mW avg|200mW rtd)
685nm: laser-in-a-box by Atomic (30.4mW pk|29.3mW avg) | 501B by Atomic (32.4mW avg)
780nm: module (2.7mW avg|5mW rtd)
808nm: Classic modded from a 532nm (162mW avg)
850nm: module (8.8mW avg|7mW rtd)
980nm: NewWish (81mW pk|5mW rtd) | 2nd line around 490nm

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Posted By For Type Date
Doom to 3 elements - New G series lens for 405nm/ 445nm / 520nm This thread Refback 07-14-2015 02:56 PM
[Holding] New G7 lens GB with 9mm/8.8mm holder This thread Refback 05-23-2015 08:21 PM
New G7 lens for 445nm / 462nm / 520nm This thread Refback 04-24-2015 09:10 PM










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