BK7/FS focusing lens
Focusing lens for YAG Laser
Focusing lens are used to focus laser beam. The objective of focusing the laser beam is to use the laser power for material processing.
Converging Lens
Specifications
Diameter Tolerance +0/-0.13mm
Thickness Tolerance ±0.25mm
FL Tolerance <±2%
Centration <3 arc minutes01
Clear Aperture >90%
Surface Figure <λ/4 per 1”Dia@632.8nm
Surface Quality 40-20 scratch and dig
AR/AR coating R<0.5% per surface
Material BK7
| Part No. | Diameter (mm) | EFL (mm) | ET (mm) | Material | Wavelength (nm) |
|---|---|---|---|---|---|
| LBK-12.7-15-ET2 | 12.7 | 15.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-12.7-50-ET2 | 12.7 | 50.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-12.7-100-ET2 | 12.7 | 100.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-12.7-120-ET2 | 12.7 | 120.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-12.7-160-ET2 | 12.7 | 160.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-15-20-ET2 | 15.0 | 20.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-15-35-ET2.5 | 15.0 | 35.0 | 2.5 | BK7 | 1064/800/633/532/355 |
| LBK-25.4-25.4-ET2 | 25.4 | 25.4 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-25.4-50-ET2 | 25.4 | 50.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-25.4-75-ET2 | 25.4 | 75.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-25.4-100-ET2 | 25.4 | 100.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-25.4-150-ET2 | 25.4 | 150.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-25.4-200-ET2 | 25.4 | 200.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-25.4-500-ET2 | 25.4 | 500.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-30-80-ET2 | 30.0 | 80.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-30-100-ET2 | 30.0 | 100.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-30-120-ET2 | 30.0 | 120.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-50-100-ET3 | 50.0 | 100.0 | 3.0 | BK7 | 1064/800/633/532/355 |
| LBK-50-150-ET3 | 50.0 | 150.0 | 3.0 | BK7 | 1064/800/633/532/355 |
| LBK-50-200-ET3 | 50.0 | 200.0 | 3.0 | BK7 | 1064/800/633/532/355 |
| LBK-50-500-ET2 | 50.0 | 500.0 | 2.0 | BK7 | 1064/800/633/532/355 |
| LBK-50-1000-ET2 | 50.0 | 1000.0 | 2.5 | BK7 | 1064/800/633/532/355 |
Material Fused Silica
| Part No. | Diameter (mm) | EFL (mm) | ET (mm) | Material | Wavelength (nm) |
|---|---|---|---|---|---|
| LFS-19-25-ET2 | 19.0 | 25.0 | 2.0 | Fused Silica | 1064 |
| LFS-19-30-ET2 | 19.0 | 30.0 | 2.0 | Fused Silica | 1064 |
| LFS-25.4-50-ET2 | 25.4 | 50.0 | 2.0 | Fused Silica | 1064 |
| LFS-25.4-100-ET2 | 25.4 | 100.0 | 2.0 | Fused Silica | 1064 |
| LFS-25.41-150-ET2 | 25.4 | 150.0 | 2.0 | Fused Silica | 1064 |
| LFS-25.4-200-ET2 | 25.4 | 200.0 | 2.0 | Fused Silica | 1064 |
| LFS-25.4-250-ET2 | 25.4 | 250.0 | 2.0 | Fused Silica | 1064 |
| LFS-25.4-300-ET2 | 25.4 | 300.0 | 2.0 | Fused Silica | 1064 |
| LFS-25.4-500-ET2 | 25.4 | 500.0 | 2.0 | Fused Silica | 1064 |
| LFS-25.4-1000-ET2 | 25.4 | 1000.0 | 2.0 | Fused Silica | 1064 |
| LFS-36-90-ET1.9 | 36.0 | 90.0 | 1.9 | Fused Silica | 1064 |
| LFS-38-200-ET3 | 38.0 | 200.0 | 3.0 | Fused Silica | 1064 |
| LFS-38-350-ET3 | 38.0 | 350.0 | 3.0 | Fused Silica | 1064 |
| LFS-38-500-ET3 | 38.0 | 500.0 | 3.0 | Fused Silica | 1064 |
Negative Diverging Lens
Specifications
Diameter Tolerance +0/-0.13mmThickness Tolerance ±0.25mm
FL Tolerance <±2%
Centration <3 arc minutes
Clear Aperture >90%
Surface Figure <λ/4 per 1”Dia@632.8nm
Surface Quality 40-20 scratch and dig
AR/AR coating R<0.5% per surface
| Part No. | Diameter (mm) | EFL (mm) | ET (mm) | Material | Wavelength (nm) |
|---|---|---|---|---|---|
| LFS-12.5+6.57-ET5U | 12.5 | -6.6 | 5.0 | Fused Silica | 355 |
| LFS-12.5+12.7-3.5U | 12.5 | -12.7 | 3.5 | Fused Silica | 355 |
| LFS-18+58.9-ET2.7U | 18.0 | -58.9 | 2.7 | Fused Silica | 355 |
| LFS-18+89.1-ET2.5U | 18.0 | -89.1 | 2.5 | Fused Silica | 355 |
| LBK-25+25-ET10.9U | 25.0 | -25.0 | 10.9 | BK7 | 355 |
| LFS-10+18.78-ET2.5G | 10.0 | -18.8 | 2.5 | Fused Silica | 532 |
| LFS-10+24.7-ET2.6G | 10.0 | -24.7 | 2.6 | Fused Silica | 532 |
| LFS-10+35.65-ET2G | 10.0 | -36.7 | 2.0 | Fused Silica | 532 |
| LBK12.7+20-ET2 | 12.7 | -20.0 | 2.0 | BK7 | 532 |
| LBK-12.7+40-ET2 | 12.7 | -40.0 | 2.0 | BK7 | 532 |
| LFS-12+25-ET3.1 | 12.0 | -25.0 | 3.1 | Fused Silica | 1064 |
| LFS-12+1-ET3.2 | 12.0 | -25.4 | 3.2 | Fused Silica | 1064 |
| LFS-15+50-ET2.5 | 15.0 | -50.0 | 2.5 | Fused Silica | 1064 |
| LFS-16+27.4-ET1.3 | 16.0 | -27.4 | 1.3 | Fused Silica | 1064 |
| LFS-28+252.7-ET3.2 | 28.0 | -252.7 | 3.2 | Fused Silica | 1064 |
| LFS-36+192.79-ET4.6 | 36.0 | -192.8 | 4.6 | Fused Silica | 1064 |
The lens listed above is only part of our product, please contact us for your customized optics.