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 lens Doublet scan lens Triplet  scan lens
Singlet Doublet Triplet

 

Scanning Laser System Optics
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.
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.
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.

Standard SL2

14EPD
20EPD
25EPD
FLD
SS
FLD
SS
FLD
SS
F150 95x95 190 85x85 140 65x65 105
F200
130x130
250
120x120
175
110x110
140
F250
170x170
310
150x150
220
125x125
180
F300
210x210
370
180x180
260
155x155
210

All ZnSe, <10% Spot size variation , >90% circularity, M85 Mount Compatible, Optional Debris Window

Standard Telecentric SL2

14EPD
20EPD
25EPD
FLD
SS
FLD
SS
FLD
SS
F85 50x50 105 45x45 75 40x40 60
F100
65x65
120
60x60
90
45x45
70
F150
95x95
185
90x90
130
70x70
100

All ZnSe, <10% Spot size variation, >90% circularity, Telecentric Angle <5°, M85 Mount Compatible, Optional Debris Window

* All Units are mm, except SS is um

Scanning Laser System Optics