F-Theta Lens

F Theta Lens Definition
F-Theta lenses are commonly used in laser scanning systems and request high resolution. The image height of the f theta lens is equal to the scanning angle. These diffraction-limited lens systems can be engineered to produce the desired spot size. F-theta lenses are significant in industrial material drilling, welding, and cutting. They are also used in industrial lasers.

a. Custom Optical Coating

b. Lens Design by 3 And 4 lens

c. Transmition: >90%

Specification of Telecentric F Theta Lens
No. Material Scan Scope Focal Length Incident Light Max. Incident Light Angle Spot Diameter
（mm） （®）
SL-70*70-100-10.6 ZnSe 70*70 100 14 30 0.2-0.3
SL-110*110-150-10.6 ZnSe 110*110 150 14 30 0.2-0.3
SL-140*140-200-10.6 ZnSe 140*140 200 14 30 0.2-0.3
SL-175*175-250-10.6 ZnSe 175*175 250 14 30 0.2-0.3
SL-210*210-300-10.6 ZnSe 210*210 300 14 30 0.2-0.3
SL-300*300-430-10.6 ZnSe 300*300 430 16 20 0.5
SL-400*400-590-10.6 ZnSe 400*400 590 16 20 0.6
SL-500*500-623-10.6 ZnSe 500*500 623 16 22 0.7
SL-600*600-700-10.6 ZnSe 600*600 700 16 20 0.7
SL-300*300-450-10.6-D65 ZnSe 300*300 450 28 20 0.35
SL-400*400-545-10.6-D65 ZnSe 400*400 545 28 20 0.5
SL-500*500-716-10.6-D65 ZnSe 500*500 716 28 22 0.6

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