Protective Window: PHYO protective windows are widely used in the optical systems, to protect the inside precision optical systems from dust, water, scratches, damage, etc. They can be customer designed in different size, surface polishing standard, and apply coating. Windows can be round or rectangle, or with R chamfer of angles, with installation steps
Specification | Commercial | High Standard |
Dimension | 3mm-200mm | Normally φmin0.5, φmax450 |
Thickness | Tmin can be reach to 0.2mm | |
Diameter Tolerance | +0.00/-0.20mm | +0.00/-0.05mm |
Thickness Tolerance | +0.00/-0.20mm | +0.00/-0.05mm |
Parallelism | <10arcsec | <5arcsec |
Flatness | <Lambda | <L/20 |
Surface quality(S/D) | 60-40 | 10-5 |
Bevel(By 45degree) | 0.20mm-0.50mm | 0.05-0.20mm |
Coating | Single Wavelength AR,R<0.25% as required. BBAR,R<0.5% as required. * | |
* AR, or BBAR can be with requested color, all can be done by dielectric AR coating with indication |



