Windows are widely employed to separate different physical environments while allowing light to pass through. The material type, transmission and other physical specifications will be taken into account when a window is selected. Antireflection coatings are available upon customer’s requirement. Windows>>>BK7 Windows 
Parameters | Standard grade | Precision grade | Material | BK7 | BK7 | Dimensional Tolerance | +0.0/-0.15 | +0.0/-0.15 | Clear Aperture | >90% | >90% | Surface Quality | S/D=60/40 | S/D=20/10 | Parallelism | <1 minute | <30 seconds | Flatness | λ/2 @ 633nm per 25mm | λ/10 @ 633nm per 25mm | Chamfer | 0.25mm at 45°typical | 0.25mm at 45°typical | AR Coatings | Optional | Optional | The regular dimension for precision grade Windows | Part No. | WIN1110 | WIN1112 | WIN1125 | WIN1130 | WIN1150 | Diameter (mm) | 10.0 | 12.7 | 25.4 | 30.0 | 50.0 | Thickness (mm) | 6.0 | 6.0 | 6.35 | 6.35 | 10.0 | The regular dimension for standard grade Windows | Part No. | WIN1210 | WIN1212 | WIN1225 | WIN1230 | WIN1250 | Diameter (mm) | 10.0 | 12.7 | 25.4 | 30.0 | 50.0 | Thickness (mm) | 3.0 | 3.0 | 3.0 | 4.0 | 6.0 |
Note: Other dimension and specification are available upon request. Windows>>>UV grade Fused Silica Windows Parameters | Standard grade | Precision grade | Material | UV grade Fused Silica | UV grade Fused Silica | Dimensional Tolerance | +0.0/-0.15 | +0.0/-0.15 | Clear Aperture | >90% | >90% | Surface Quality | S/D=60/40 | S/D=20/10 | Parallelism | <3 minutes | <30 seconds | Flatness | λ/2 @ 633nm per 25mm | λ/10 @633nm per 25mm | Chamfer | <0.25x45 deg | <0.25x45 deg | AR Coatings | Optional | Optional | The regular dimension for precision grade Windows | Part No. | WIN2110 | WIN2112 | WIN2125 | WIN2130 | WIN2150 | Diameter(mm) | 10.0 | 12.7 | 25.4 | 30.0 | 50.0 | Thickness(mm) | 6.0 | 6.0 | 6.35 | 6.35 | 10.0 | The regular dimension for standard grade Windows | Part No. | WIN2210 | WIN2212 | WIN2225 | WIN2230 | WIN2250 | Diameter(mm) | 10.0 | 12.7 | 25.4 | 30.0 | 50.0 | Thickness(mm) | 3.0 | 3.0 | 3.0 | 3.0 | 5.0 |
Note: Other dimension and specification are available upon request. The Excimer, UV and IR grade fused silica all are available according to the customers’ requirement. Windows>>>Sapphire Specifications | Material | Optical Grade Sapphire Crystal | Diameter Tolerance | +0.0/-0.15mm | Thickness Tolerance | ±0.2mm | Clear Aperture | >90% | Parallelism | < 3 minutes | Surface Quality | S/D=80/50 | Flatness | 1λ per 25mm @ 633nm | AR Coatings | Optional | Part No. | WIN4110 | WIN4112 | WIN4120 | WIN4125 | WIN4130 | Diameter(mm) | 10.0 | 12.7 | 20.0 | 25.4 | 30.0 | Thickness(mm) | 0.9 | 1.0 | 2.0 | 3.0 | 3.0 |
Note: Other dimension and specification are available upon request. Windows>>>CaF2 Specifications | Material | Calcium Fluoride Single Crystal | Transmission Range | 0.17-7.8 um | Diameter Tolerance | +0.0/-0.15mm | Thickness Tolerance | ±0.2mm | Clear Aperture | >90% Diameter | Parallelism | < 3 minutes | Surface Quality | S/D=80/50 | Flatness | λ/2@ 633nm per 25mm | AR Coatings | Optional | Part No. | WIN3110 | WIN3112 | WIN3125 | WIN3130 | WIN3150 | Diameter(mm) | 10.0 | 12.7 | 25.4 | 30.0 | 50.0 | Thickness(mm) | 1.0 | 2.0 | 3.0 | 3.0 | 8.0 |
Note: Other dimension and specification are available upon request. Windows>>>Wedges 
Specifications | Material | UV grade fused silica or BK7 glass | Diameter Tolerance | +0.0/-0.15mm | Thickness Tolerance | ±0.20mm | Wedge Angle | 1°，2°，3° or Customized | Wedge Tolerance | ±6 minutes | Surface Quality | S/D=10/5 laser quality | Transmitted wavefront distortion | λ/10@ 633nm | Clear Aperture | >90% | Chamfer | 0.25mm at 45°typical | AR Coatings | Optional | Regular Diameter | 25.4mm |
Windows>>>Brewster Plates 
Specifications | Material | UV grade fused silica or BK7 glass | Diameter Tolerance | +0.0/-0.15mm | Thickness Tolerance | ±0.20mm | Parallelism | <3 arc mins | Surface Quality | S/D=10/5 laser quality | Transmitted wavefront distortion | λ/10@ 633nm | Clear Aperture | >90% | Chamfer | 0.25mm at 45°typical |
BK7 Brewster Plate Part No. | Diameter(mm) | Thickness(mm) | BWT1112 | 12.7 | 4 | BWT1115 | 15.0 | 5 | BWT1125 | 25.4 | 6 | BWT1150 | 50.0 | 12 |
Fused Silica Brewster Plate Part No. | Diameter(mm) | Thickness(mm) | BWT2112 | 12.7 | 4 | BWT2115 | 15.0 | 5 | BWT2125 | 25.4 | 6 | BWT2150 | 50.0 | 12 |
| 
