Scanning Laser System Optics

Scanning Laser System Optics

F-theta scan lenses play a major role in today’s leading-edge laser applications. II-VI manufactures scan lenses for CO2 laser systems that are used for marking, engraving, via hole drilling, and more.

In a typical scan lens configuration, the F-theta lens is used with one or two axis galvo mirrors that enable the laser beam’s fast positioning and precision focusing.

While standard focusing lenses deliver a focused spot to only one point, scan lenses deliver a focused spot to many points on a scan field or workpiece. They require special considerations in their design and use.

Scan lens applications include:

Marking
Engraving
Rapid prototyping
Drilling circuit board via holes
Cutting cloth
Cutting paper

Our II-VI scan lenses feature:

The finest optical materials in the world
Special housing designs to optimize performance
Wavelength options from 9.2 to 10.6 µm
Via hole drilling diameters from 75 to 300 µm
Designs featuring one to five optical elements
Optional protection windows
Low-loss AR coatings
Precision optical elements

Contact a II-VI sales representative to discuss your scanning laser optics needs.

Singlet Scan Lenses

Part #	Material	Lens CA (mm)	Scan Field (mm)	Focal Length (mm)	Lens Diameter (mm)	Working Distance* (mm)
SL1-10.6-25-88-127-U	ZnSe	25	88	127	28	134
SL1-10.6-25-60-89.5-U	ZnSe	25	60	89.5	28	96
SL1-10.6-36-40-100-U	ZnSe	36	40	100	40	103
SL1-10.6-36-70-100-U	ZnSe	36	70	100	40	106
SL1-10.6-43-40-55-U	ZnSe	43	40	55	48	59
SL1-10.6-43-70-105-U	ZnSe	43	70	105	48	110
SL1-10.6-43-100-150-U	ZnSe	43	100	150	48	159
SL1-10.6-43-140-200-U	ZnSe	43	140	200	48	209
SL1-10.6-43-250-360-U-A	ZnSe	43	250	360	48	379
SL1-10.6-57-120-175-U	ZnSe	57	120	175	64	187
SL1-10.6-57-110-208-U-A	ZnSe	57	110	208	64	217
SL1-10.6-64-140-200	ZnSe	64	140	200	68	215
SL1-10.6-74-140-200-U	ZnSe	74	140	200	75	211
SL1-10.6-40-80-100-U-A	Ge	40	80	100	43	106
SL1-10.6-40-120-200-U-A	Ge	40	120	200	43	217
*Working distance for scan lenses is specific to the input beam parameters and galvo systems. Each model listed above has a detailed specification sheet available upon request. Please contact a II-VI sales representative for more information.

Doublet Scan Lenses

Part #	Material	Lens CA (mm)	Scan Field (mm)	Focal Length (mm)	Working Distance* (mm)
SL2-10.6-47-50-100	ZnSe	47	50	100	108
SL2-10.6-50-29-45	ZnSe	50	29	45	56
SL2-10.6-54-70-122	ZnSe	54	70	122	131
SL2-10.6-54-110-170	ZnSe	54	110	170	193
SL2-10.6-54-140-220	ZnSe	54	140	220	246
SL2-10.6-58-104-200	ZnSe	58	104	200	217
SL2-10.6-60-64-125	ZnSe	60	64	125	133
SL2-10.6-74-100-160	ZnSe, Ge	74	100	160	195
SL2-10.6-80-175-250	ZnSe, Ge	80	175	250	280
SL2-10.6-82-210-300	ZnSe	82	210	300	333
*Working distance for scan lenses is specific to the input beam parameters and galvo systems. Each model listed above has a detailed specification sheet available upon request. Please contact a II-VI sales representative for more information.

Triplet Scan Lenses

Part #	Material	Lens CA (mm)	Scan Field (mm)	Focal Length (mm)	Working Distance* (mm)	Spot Size (µm)
SL3-9.4-70-40-80-DW	ZnSe	70	40	80	98	100
SL3-9.3-105-50-100-DW-A	ZnSe	105	50	100	120	85
SL3-9.3-108-50-95-DW	Ge, ZnSe	108	50	95	95	65
SL3-9.4-108-50-100-DW	Ge, ZnSe	108	50	100	103	70
SL3-9.4-114-50-85-DW	Ge, ZnSe	114	50	85	85	50
SL3-9.4-115-60-105-DW	ZnSe	115	60	105	133	92
SL3-9.3-128-60-100-DW	ZnSe	128	60	100	111	87
*Working distance for scan lenses is specific to the input beam parameters and galvo systems. Each model listed above has a detailed specification sheet available upon request. Please contact a II-VI sales representative for more information.