Galilean type, compact or zoom beam expanders for 1064 nm, 532 nm and 355 nm wavelengths. F-Theta lens for scanning and engraving applications for 1064 nm, 532 nm wavelengths. Special form lens used to distribute energy of Gaussian beam to Top Hat profile - Gauss-to-Top Hat Beam Shaping Lens. Zoom Beam Expanders: Compact Galilean type zoom beam expanders for Nd:YAG lasers fundamental and its harmonics wavelength: 1064nm, 532nm and 355nm. Compact Beam Expanders: A laser beam expander is designed to increase the diameter of a collimated input beam to a larger collimated output beam.