Need Help Choosing F-Theta Lenses for a 30w Fiber Laser

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Thread: Need Help Choosing F-Theta Lenses for a 30w Fiber Laser

  1. #1
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    Default Need Help Choosing F-Theta Lenses for a 30w Fiber Laser

    I have ordered a Chinese 30W Fiber Laser with a MaxPhotonics source.
    Yes I know its not the best...Its what I could afford, and should serve my intended use.
    Mine is coming with a lens for a 150mmx150mm area ( I believe the focal length is 225mm).
    From what I understand from reading countless posts and watching countless videos, the spot size will affect the power delivered at the spot.
    The greater the power at the spot the deeper you can engrave on each pass.
    My unit should have a 34 Micron beam size.
    If I get shorter focal length lenses I can get smaller beam size.
    Most of my work will be small items.
    I can get a 63mm focal length lens with a 50mmx50mm work area and it will have a 12 Micron beam size.
    Will there be any appreciable difference in delivered power?
    I am looking to do deep engraving and get maximum depth in the minimal number of passes.

    I'd also consider these lenses:
    70mx70mm area 16 Micron beam size
    110mmx110mm area with 26 Micron beam size.

    The lenses are only about $120, so I might get two if its worth it.
    I'd like to hear opinions different lens choices.

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  2. #2

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    Haha...Max source is enough..In fact,Raycus laser source maybe better,but nonesense.
    "My unit should have a 34 Micron beam size."what's the meaning?means your machine input beam diameter is 34 micron?
    As i known,the general diameter of the input diameter has below diameter:8mm/10mm/12mm/16mm/20mm;different galvo head need different f-thetas.$120 of the f-theta lens is also a bit expensive.If you need some more further infos.
    My whatsapp:+86 188 1628 1816,email:andy@carmanhaas.com ;freely let me know.



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    Default Re: Need Help Choosing F-Theta Lenses for a 30w Fiber Laser

    Hello Mechhead,
    We are manufacturer of laser optics, our own brand Carmanhaas.
    We have client all over the world. Price competitive quality good.
    If you need buy laser marking machine, scan lens, Galvo or other laser optics you can contact me.
    My whatsapp: +86 18351084674



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Need Help Choosing F-Theta Lenses for a 30w Fiber Laser

Need Help Choosing F-Theta Lenses for a 30w Fiber Laser