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Try the red laser, but 650 to 10600 is like apples and M3 screws
The focal length will be different, and that's about it.
That will do absolutely nothing :beer:
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ArcticMyst Security by Avery
First test on a DIY 40W CO2 laser
- Thread starter Arayan
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The focal length will be different, and that's about it.
That will do absolutely nothing :beer:
Bluefan
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A plano convex lens isn't symmetric, flipping it around will change the spot size. The smallest spot size is obtained with the flat end at the focal point side, but it's a small effect so it can't be the problem here.
Arayan
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I tried the lens with a red beam and I obtained a focused spot at the distance of approx. 12 cm. Very similar results were obtained with flipped lens. Later I'm going to try again with the CO2 using more accurate distances.
I appreciate all comments
I appreciate all comments
Arayan
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Problem solved
honestly I don't know why (maybe for the lens diameter) but the problem was that this lens has a very precise focal length (9.8 cm) just a millimeter more or less and it goes out of focus.
:thanks:
honestly I don't know why (maybe for the lens diameter) but the problem was that this lens has a very precise focal length (9.8 cm) just a millimeter more or less and it goes out of focus.
:thanks:
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May I suggest one of these if you are having issues with your znse?
Used ZnSe 7.5"F.L. Carbon Dioxide Laser Lens Infrared IR Optic CO2 1.5" Diameter | eBay
Used ZnSe 7.5"F.L. Carbon Dioxide Laser Lens Infrared IR Optic CO2 1.5" Diameter | eBay
Arayan
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Thanks Jeff, my lens is weird but works at the moment... I don't understand but it works at 9.8 cm (focal distance) but, for example, at 10 cm it produces a hole (in a black thin plastic) bigger than holes produced by the "pure" beam
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That shouldn't be possible. What about at 9.6cm?
Arayan
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I measured with a technically non-aligned system and with few time for testing, so it is certainly possible!!!
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Arayan
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Arayan
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Sorry for double posting, but I want to back IT with a small movie with the laser equipped with the ZeSn lens. Now it's capable to cut a pencil
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Arayan
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realista
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ciao! vedo che il tuo progetto continua davvero bene!
peccato che non entro piu molto nel forum per seguirlo...!!!
peccato che non entro piu molto nel forum per seguirlo...!!!
Arayan
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