DZOFILM Marlin 1.6x Expander PL Lens to E Camera | E Mount Sony | Objektive und Zubehör | ONLINESHOP | Xinegear
Laserstrahlaufweiter | Edmund Optics
Fixed Magnification Beam Expanders: Achromatic
How to Build a Beam Expander
Cloudray CO2 Laser 10600 nm Laser Beam Expander 2 x 2.5 x 3 x 4 x 5 x 6 x 8 x Galvanometer Laser Marking Lenses Optic Rays Expand 10.6μm-6X : Amazon.de: DIY & Tools
Beam Expander Design Comparison: Keplerian and Galilean