alexazhang  

A full line of CO2 optics that fit virtually all lasers used for cutting wood, plastic, and light metal and are shipped overnight for field replacement are available from Laser Research Optics of Providence, Rhode Island.
 
Laser Research CO2 Lenses and Mirrors meet OEM and ISO-10110 specifications for optical elements and are compatible with all popular low power cutting lasers . Optimized for use @10.6 µm where depth of field is important, the lenses are offered in 1/2" to 1-1/2" dia. sizes with focal lengths from 1" to 25", in 1/2" increments, and have 40-20 scratch-dig surface quality.

Shipped overnight to minimize downtime, Laser Research CO2 Lenses and Mirrors are compatible with Amada, Coherent, Cincinnati, Continuum, Epilog, Lambda Physik, Mazak, Synrad, Universal and similar lasers. Featuring <0.2% total absorption values, the ZnSe lenses are A/R coated; with dual-band coatings offered to aid in system alignment. Mirrors and reflectors are 1/2" to 3" dia., 2 to 10mm thick, and come in silicon, molybdenum, and copper.