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Old 04-11-2017, 10:20 AM #145
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

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Originally Posted by Serveurperso View Post
Mateusz say to me the 6x lenses need a brass assembly with larger space between the 2 lens (than 2x/3x). I wait for it.
I want to put the brass cylindrical lens assembly inside 3D printed tube, the tube attached on my NUBM44 laser.

Also I have two binoculars lens, one extracted from small binoculars and one big extracted from astronomical binoculars.
I want to print beam expanders to attach on this NUBM44 portable laser
The suggested distance between the 3X vs the 6X lens set is only 2mm, The suggested distance between the 3X is 25mm and the suggested distance between the 6X is 27mm but the 2X is the same as the 3X at 25mm......

Just FYI the input lens in a beam expander is different then most all lenses found in binoculars, The input lens in a BE is a plano concave like this.....



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Old 04-11-2017, 12:25 PM #146
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

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The suggested distance between the 3X vs the 6X lens set is only 2mm, The suggested distance between the 3X is 25mm and the suggested distance between the 6X is 27mm but the 2X is the same as the 3X at 25mm......

Just FYI the input lens in a beam expander is different then most all lenses found in binoculars, The input lens in a BE is a plano concave like this.....

Yes I know, this is normal. I don't use input lens. I use only the large output lens perfect for beam expander.

We don't need input lens, just unfocus the G2/G7 to cover all the output lens I get perfect colimated very tiny line with this method and minimum loss.

About the slow axis correction of a LD, I never tested prisms & never tested cylindrical.
I think I need the plano concave on expander input like you say to use cylindrical correction (else beam is too large); and I think my expander method work for prisms correction.
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Old 04-11-2017, 03:49 PM #147
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

You can always just put a 3X BE on a NUBM44 with a 3E primary and have some fun, it's pretty easy, also be careful with bino optics, you could burn the coating, I have burned some coatings myself.



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Old 04-11-2017, 03:58 PM #148
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

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You can always just put a 3X BE on a NUBM44 with a 3E primary and have some fun, it's pretty easy, also be careful with bino optics, you could burn the coating, I have burned some coatings myself.
Awesome lasers
Yes I already burned the coating from bino, very easy with the focal point. To avoid this, just distribute power on all lens surface and no problem.

It is a doublet of two lenses glued with a "paste" known to opticians. This "glue" is way easier to burn than coating with a focal dot! Especially with a 405nm 800mW laser.
With bluray we can make tiny hole on the reflective coating of any mirror (tested) !!!
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Old 04-11-2017, 04:28 PM #149
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

Hello Guys. News for you! Soon some tests will be ready!

Cylindrical lenses 6X magnification (AR 400-700nm) - Opt Lasers
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Old 04-11-2017, 04:35 PM #150
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

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Hello Guys. News for you! Soon some tests will be ready!

Cylindrical lenses 6X magnification (AR 400-700nm) - Opt Lasers
Hello, I wait the (longer) brass mount for these ! It's available ?
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Old 04-11-2017, 04:36 PM #151
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

Need just few days, we will add it on website. Total setup needs 42mm.
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Old 04-11-2017, 05:26 PM #152
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

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Follow facebook or sign up to newsletter THey wil lshow up soon.
Size the same as the ones we already have.
Nice: http://optlasers.com/en/cylindrical-...00-700nm-.html

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Old 04-11-2017, 06:37 PM #153
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

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Yes it's a single element aspherical with a bit more focal length than G2.
Yes it's not cheap but no, I can't get this focal length with housing at 10$ or please give me a link?
I ordered 16 lens and all are perfect, for G2 I get "1 bad for 3"!
A quick search found this lens for $6.99 and free shipping. Focus 8mm /6.3mm Diameter Aspherical Glass Collimating Lens for Laser Module | eBay
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Old 04-11-2017, 06:50 PM #154
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

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A quick search found this lens for $6.99 and free shipping. Focus 8mm /6.3mm Diameter Aspherical Glass Collimating Lens for Laser Module | eBay
thanks ! lol I loss 30$ total in three month...
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Old 04-11-2017, 06:51 PM #155
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

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Originally Posted by Tomorrows System View Post
Hello Guys. News for you! Soon some tests will be ready!

Cylindrical lenses 6X magnification (AR 400-700nm) - Opt Lasers
Ordered a set yesterday !

Thank You !

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Old 04-11-2017, 07:30 PM #156
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

It let me add to cart, are these for sale now?

12 x 12 x 7 has some possibilities, I would like to PBS cube a pair of 44's with G2 primaries and 1 wave plate then 6X correct the combined beam rather than 6X correct each beam before the cube.

http://optlasers.com/en/cylindrical-...00-700nm-.html
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Old 04-11-2017, 08:17 PM #157
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

Does anyone know if these are the same pair as the ones in the last group buy? They look different to me and i was wondering if these might be worth having in addition to the ones i have.
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Old 04-11-2017, 08:47 PM #158
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

The LSP 6X pair are 12mm tall but the concave is 6mm wide and the convex is 10mm wide, the curved surfaces should be the same, however the OPT lenses are also thicker, also the OPT have a low loss coating as do the LSP, I don't remember the numbers.

The OPT are 12x12x7



The pics are LSP, it's like the business parts are there without the extra glass, but one pair could be ground better so testing will show.




Attached Thumbnails
OPT Lasers Cylindric lenses - NUBM44 beam correction tests-sany0528.jpg   OPT Lasers Cylindric lenses - NUBM44 beam correction tests-sany0531.jpg   OPT Lasers Cylindric lenses - NUBM44 beam correction tests-sany0538.jpg  
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Old 04-11-2017, 08:59 PM #159
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

Quote:
Originally Posted by paul1598419 View Post
Does anyone know if these are the same pair as the ones in the last group buy? They look different to me and i was wondering if these might be worth having in addition to the ones i have.
I believe this is the first time OPT has offered a 6X cyl pair ?

Quote:
Originally Posted by RedCowboy View Post
The LSP 6X pair are 12mm tall but the concave is 6mm wide and the convex is 10mm wide, the curved surfaces should be the same, however the OPT lenses are also thicker, also the OPT have a low loss coating as do the LSP, I don't remember the numbers.

The OPT are 12x12x7

The pics are LSP, it's like the business parts are there without the extra glass, but one pair could be ground better so testing will show.
I'm assuming there is reason behind the OPT lenses being much more thick then the LSP lenses but I don't know what it is ?
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Old 04-11-2017, 10:22 PM #160
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Default Re: OPT Lasers Cylindric lenses - NUBM44 beam correction tests

Thanks, RCB. That was the information I needed.
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