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Old 03-08-2015, 03:54 AM #49
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Default Re: [Holding] New G7 lens GB with 9mm/8.8mm holder

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Originally Posted by starlight View Post
I'm not quite sure how that's done.
Just measure how big the dots are from e.g 10m from two different lenses when focused to infinity.

I suggest compare my G7 to the 3 element lens first.

btw what is that MP9 lens from ebay? Could you give me a link or description something?


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Last edited by Podo; 03-08-2015 at 04:14 AM.
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Old 03-08-2015, 04:20 AM #50
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Default Re: [Holding] New G7 lens GB with 9mm/8.8mm holder

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Originally Posted by Podo View Post
btw what is that MP9 lens from ebay? Could you give me a link or description something?
I have 3 of them and like them a lot

405nm 445nm 515nm Laser Lens MP9X9MM Laser Collimation Glass Lens 1 Pcs | eBay
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Old 03-08-2015, 10:05 AM #51
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Default Re: [Holding] New G7 lens GB with 9mm/8.8mm holder

we might have to run some comparison tests with this "mp9" lens in detail too, looks like it does well with maximum power
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Old 03-08-2015, 10:45 AM #52
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Default Re: [Holding] New G7 lens GB with 9mm/8.8mm holder

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Originally Posted by starlight View Post
Well as I thought about it (and seeing Lighting Stalkers post) I figured that it would be safe to do a quick LPM test of the lens against a few others.

Laser used was a Blord 2.5w 445nm 501b
lenses used 3 element, G9, G2, MP9, and this new G7 from Podo
If that is a G-2 there is something terribly wrong with it maybe dirty. They have the same pass as the G-9.

Last edited by DTR; 03-08-2015 at 11:03 AM.
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Old 03-08-2015, 12:26 PM #53
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Default Re: [Holding] New G7 lens GB with 9mm/8.8mm holder

I think your right. I will re test soon. That lens did suffer a semi big gun powder explosion about 1 inch in front of it a week before and I haven't cleaned it yet. I should know better sorry

Edit: I am pulling the test video until I can re test these.
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Last edited by starlight; 03-08-2015 at 02:23 PM. Reason: update info
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Old 03-08-2015, 08:37 PM #54
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Default Re: [Holding] New G7 lens GB with 9mm/8.8mm holder

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Originally Posted by starlight View Post
These are simillar to my S1 lens. We get them from the same supplier.

I just get them for like $3 per pc.

I will look into the G7 my self later on and will update you guys with my results on my 5W ophir head ...
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Old 03-08-2015, 09:25 PM #55
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Default Re: [Holding] New G7 lens GB with 9mm/8.8mm holder

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Originally Posted by Thejoker301 View Post
These are simillar to my S1 lens. We get them from the same supplier.

I just get them for like $3 per pc.
Well your missing out on some sales and profits cause I know people that buy these and other lenses that cost more and are no better. Do you sell things or just a made to order business
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Old 03-12-2015, 09:44 PM #56
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Default Re: [Holding] New G7 lens GB with 9mm/8.8mm holder

starlight, I got the lens you sent me and have been checking it for divergence. I checked it against my S1 lenses on the M140 and the 9mm laser diodes and can't find an improvement over these lenses at 30 meters with these diodes. I also tried to use it with my ML501P73-02 635nm 1 watt laser and couldn't get it to focus. I believe that the problem might be that the copper module I used is not deep enough to get the lens positioned far enough away from the laser diode. I have another one that I am waiting for the host for. I am hoping that I will be able to get that one to focus and then can test the divergence between the two and a three element lens.
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Old 03-13-2015, 09:00 AM #57
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Default Re: [Holding] New G7 lens GB with 9mm/8.8mm holder

Quote:
Originally Posted by paul1598419 View Post
starlight, I got the lens you sent me and have been checking it for divergence. I checked it against my S1 lenses on the M140 and the 9mm laser diodes and can't find an improvement over these lenses at 30 meters with these diodes. I also tried to use it with my ML501P73-02 635nm 1 watt laser and couldn't get it to focus. I believe that the problem might be that the copper module I used is not deep enough to get the lens positioned far enough away from the laser diode. I have another one that I am waiting for the host for. I am hoping that I will be able to get that one to focus and then can test the divergence between the two and a three element lens.
IN case if you are referring my G7:

I personally cut the G7 holder in half using a saw because it blocked my waterproof lens. I guess it's a bit long the one supplier installed.

Still only starlight tested for its output against others lenses but no divergence test to be done yet, I'm hoping thejoker301 didn't forget this lens I sent him and conduct the divergence test from what he said.
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Last edited by Podo; 03-13-2015 at 09:13 AM.
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Old 03-13-2015, 10:06 AM #58
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Default Re: [Holding] New G7 lens GB with 9mm/8.8mm holder

Quote:
Originally Posted by Podo View Post
IN case if you are referring my G7:

I personally cut the G7 holder in half using a saw because it blocked my waterproof lens. I guess it's a bit long the one supplier installed.

Still only starlight tested for its output against others lenses but no divergence test to be done yet, I'm hoping thejoker301 didn't forget this lens I sent him and conduct the divergence test from what he said.
I wasn't sure I could do the tests correctly so I sent it to another member who helped me in the past with a lens (I don't forget). I think thejoker301 forgot about this, he said he would do the test Monday and it's now Friday.
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445nm Ehgemus RPL host 3W (peak 3.5W)
445nm home made labby 3W (peak 3.1W)
445nm 501b by Blord 2.5W (peak 2.7W)
447nm Dragon Lasers Spartan 1W (peak 1.3W)
520nm custom Ehgemus host NDG7475 1W (peak 1.5W)
520nm Ehgemus host PL520-B1 120mW (peak 143mW)
532nm labby 500mW (peak 630mW)
532nm Dragon Lasers Viper 75mW (peak 122mW)
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589nm Dragon Lasers Spartan 50mW (peak 115mW)
650nm C6 host (peak 153mW)
650nm E-Bay 303 host 200mW (peak 141mW) 75% IR
650nm DVD diode Mini Mag host 54mW (my first build)
650nm dollar store mini pen 5mW X2

808nm Wicked Lasers E2 400mW (peak 598mW)

Expanders & Googles etc:
Dragon Lasers 10x Beam Expander
Dragon Lasers "new" 2x Beam Expander
Dragon Lasers DGTBF
Dragon Lasers LSG02 goggles 190-548nm
Eagle Pair SL-BLG2 goggles 190-540nm

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Old 03-13-2015, 10:53 AM #59
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Default Re: [Holding] New G7 lens GB with 9mm/8.8mm holder

I managed to check the convergence on my ML501P73-02 laser by holding the lens out slightly from the module and the divergence is better than the other single element lenses I tried it against ( G2, G9, S1, Techhood lens ). It is better than these, but not as good as the three lens assembly. I didn't check power yet. If the power is about the same as other single element lenses, then it is probably worth while. If not, I'd stick to the three lens assembly.
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Old 03-21-2015, 11:12 AM #60
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Default Re: [Holding] New G7 lens GB with 9mm/8.8mm holder

I will be able to make a test today finally got some time
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