A full line of focusing lenses and mirrors that are direct field replacements for popular small CO2 lasers used for engraving plaques, cutting wood and other materials, are available in-stock for overnight delivery from Laser Research Optics.
Lenses are offered in 1/2-in. to 1-1/2-in. diameter sizes with focal lengths from 1 in. to 25 in., in 1/2-in. increments and mirrors and reflectors are 1/2-in. to 3-in. diameters, from 2mm to 10mm thick, and come in silicon, molybdenum and copper.