These low absorption ZnSe negative focusing lenses provide an extended lifetime in laser cutting applications where depth of field is an important factor. Ideally suited for welding, cutting and heat treating, these low cost lenses have superior thermal characteristics which can prevent thermal runaway in high power CO2 lasers.

All series LC lenses are coated and optimized for use at 10.6 microns.




Diameter Tolerance: + 0.000″ / – 0.005″
Thickness Tolerance: +/- 0.010″
Centering Tolerance: 3 Arc Minutes Maximum
Sphericity: < 1/40th wave at 10.6 microns
Surface Quality: 40-20 Scratch-Dig
Focal Length Tolerance: +/- 0.5 %
Absorption: 0.25 % total
AR Coating Reflectivity: R < 0.5 % at 10.6 microns

Orders from stock typically ship in 3-5 days. Manufacturing lead time can be 2-3 weeks. Please call the factory for expedited delivery or quantity discounts.

Showing all 11 results

Catalog No. Material Diameter Focal Length Edge Thickness QOH Price Order
LC-0610-Z-ET4.6 ZnSe0.600"1.000"0.180"33$140.00
LC-0620-Z-ET2.0 ZnSe0.600"2.000"0.080"26$135.00
LC-0710-Z-ET5.0 ZnSe0.750"1.000"0.200"35$155.00
LC-0715-Z-ET4.0 ZnSe0.750"1.500"0.160"12$145.00
LC-0720-Z-ET2.5 ZnSe0.750"2.000"0.100"16$140.00
LC-0725-Z-ET3.0 ZnSe0.750"2.500"0.120"21$130.00
LC-0750-Z-ET2.5 ZnSe0.750"5.000"0.100"0$125.00Request a Quote
LC-1020-Z-ET4.0 ZnSe1.000"2.000"0.160"9$190.00
LC-1110-Z-ET6.0 ZnSe1.100"1.000"0.236"15$250.00
LC-1115-Z-ET5.0 ZnSe1.100"1.500"0.200"1$235.00
LC-1125-Z-ET3.0 ZnSe1.100"2.500"0.120"35$210.00