F-theta scan lenses for CO2 laser systems that are used for marking, engraving, via hole drilling, and so on.
In a typical scanning laser system, the F-theta lens is used with two galvo mirrors that make the laser beam fast position and precision focus. For a normal focusing lenses just focus one spot to, but scan lenses can deliver a focused spot to many points on a scan field.                                                                    
Scan lens applications include:
? Marking & Engraving
? Rapid prototyping
? Drilling PCB via holes
? Cutting cloth or paper

Single-element CO2 F-Theta lenses
P/N	Substrate	Scan Field      (mm)	Focal length (mm)	Incident light(mm)	Max. incident light angle(°)	Wavelength (um)	Diameter (mm)
SL1-70*70-100-10.6	ZnSe	70*70	100	14	30	10.6	48
SL-110*110-150-10.6	ZnSe	110*110	150	14	30	10.6	48
SL-140*140-200-10.6	ZnSe	140*140	200	14	30	10.6	48
SL-175*175-250-10.6	ZnSe	175*175	250	14	30	10.6	48
SL-210*210-300-10.6	ZnSe	210*210	300	14	30	10.6	48
SL-300*300-430-10.6	ZnSe	300*300	430	16	20	10.6	48
SL-400*400-590-10.6	ZnSe	400*400	590	16	20	10.6	48
SL-500*500-623-10.6	ZnSe	500*500	623	16	22	10.6	48
SL-600*600-700-10.6	ZnSe	600*600	700	16	20	10.6	48
SL-300*300-450-10.6-D65	ZnSe	300*300	450	28	20	10.6	65
SL-400*400-545-10.6-D65	ZnSe	400*400	545	28	20	10.6	65
SL-500*500-716-10.6-D65	ZnSe	500*500	716	28	22	10.6	65
SL-35*35-100-10.6-D32	ZnSe	35*35	100	10	11	10.6	32
SL-50*50-100-10.6-D32	ZnSe	50*50	100	10	15	10.6	32
★The above are about standard products, they can also be custom made