Øgon - Lens Free Optical Scanner (LFOS) for SLS/SLM 3D printers - showing constant energy delivery

Ғылым және технология

The core engine of an SLS/SLM AM printer is the Optical Scanner. Typically, either a galvanometer (GS) or a Polygonal Mirror (PM) scanner has been used, but both have been pushed to their mechanical limits. Both scanners suffer from inconsistency in energy deposition because of changes in Optical Path Length (OPL), Surface Beam Speed (SBS), and angle of incidence(Θ).
The Øgon Lens Free Optical Scanner (patented by Tecnica, Inc., Great Neck, New York), on the other hand, provides a simple scanning method, linear transfer functions, fixed OPL, and an incident beam normal to the work surface. This paper describes the optics of the Øgon and compares it head to head with the GS. The study shows the Øgon delivers a linear transfer function, where the optical path length, surface beam speed, and Θ, the angle of incidence (and therefore the beam size and shape) are constant.

Пікірлер: 4

  • @taherkhodayi2840
    @taherkhodayi2840 Жыл бұрын

    Wonderful

  • @aaron41
    @aaron41 Жыл бұрын

    Best of luck. It's always cool to see new techniques, and the varying strengths / weaknesses they provide. You'll have a tough go of dethroning the giants like GE, EOS, etc... I'm afraid galvo systems have had a long time to mature. Most of the problems mentioned are just theoretical, and have been solved for a long time in practice.. I'd love to be proven wrong though.

  • @tecnicalab3505

    @tecnicalab3505

    Жыл бұрын

    Thank you for your feedback. We respectfully disagree. If the Galvos could reach better performance, then SLM solution would not develop a 12 laser print head. A 12 lasers print head will be adding 72 parameters to watch on the fly. yet to be seen if this system is production ready. The LFOS theoretical limits are much closer to subtractive manufacturing with great level of stability (rotational vs. oscillatory). Here is a study quantifying/comparing the two technologies (Galvos vs. LFOS): rdcu.be/c1P1f

  • @polaroidandvans
    @polaroidandvans6 ай бұрын

    What about maintenance on this? It must be a nightmare trying to adjust z focus from up top when you have a mirror spinning in your face.

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