Using a lense to selectively alter the cutting beam profile

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Thread: Using a lense to selectively alter the cutting beam profile

  1. #1
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    Default Using a lense to selectively alter the cutting beam profile

    A friend of mine is experimenting with one of the inexpensive Chinese laser cutters, the beam of which passes through a lense that focuses the beam to a point.
    We'd like to convert the beam of that cutter from a converging beam to a parallel beam at a selectable point.


    Information found on the net indicates that placing a cylindrical lense in the beam path will alter a converging beam to a parallel beam as we'd like but we don't know enough about lenses to know we correctly understand this solution.

    We've found a "25mm focal length cylindrical lense" on eBay -New Edmund Optics Cylindrical Lens 12 5mm Dia 25mm FL BK7 P N 46194 | eBay - but we don't know what a "25mm focal length" is in such an lense, or if the lense we found would suit our purpose.


    Any thoughts would be greatly appreciated.

    TIA


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    Are you trying to do a light-saber?

    .. the lens you are talking about are something like this.. no? (Attached file)


    Quote Originally Posted by jeb6319 View Post
    A friend of mine is experimenting with one of the inexpensive Chinese laser cutters, the beam of which passes through a lense that focuses the beam to a point.
    We'd like to convert the beam of that cutter from a converging beam to a parallel beam at a selectable point.


    Information found on the net indicates that placing a cylindrical lense in the beam path will alter a converging beam to a parallel beam as we'd like but we don't know enough about lenses to know we correctly understand this solution.

    We've found a "25mm focal length cylindrical lense" on eBay -New Edmund Optics Cylindrical Lens 12 5mm Dia 25mm FL BK7 P N 46194 | eBay - but we don't know what a "25mm focal length" is in such an lense, or if the lense we found would suit our purpose.


    Any thoughts would be greatly appreciated.

    TIA


    Attached Thumbnails Attached Thumbnails Using a lense to selectively alter the cutting beam profile-considerations-using-cylinder-lenses-fig-5-png  


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Using a lense to selectively alter the cutting beam profile

Using a lense to selectively alter the cutting beam profile