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Amazon.com: CNCOLETECH 18mm CO2 Laser Lens, Laser Mirror PVD ZnSe Focus Lens 101.6mm / 4" Focal for CO2 10600nm 10.6um Laser Engraver Cutting Cutter : Arts, Crafts & Sewing
![Laser beam and optic factors. The unfocused laser beam converges in the... | Download Scientific Diagram Laser beam and optic factors. The unfocused laser beam converges in the... | Download Scientific Diagram](https://www.researchgate.net/publication/316263580/figure/fig4/AS:960043855904780@1605903700607/Laser-beam-and-optic-factors-The-unfocused-laser-beam-converges-in-the-lens-to-create-a.gif)