UV Fused Silica Windows
High Precision UV Fused Silica Windows are plane-parallel optical plates, commonly adopted as protective windows for electronic sensors and environmental detection devices. Key selection parameters include substrate material, spectral transmittance, transmission wavelength range, surface figure, surface quality and parallelism tolerance. Designed to shield sensitive sensors, detectors and optical components, these windows effectively avoid light saturation and optical damage.
Compared with K9 optical glass, UV fused silica features a broader transmission spectrum from 185 nm to 2.1 μm and outstanding transmittance in the UV band. It also delivers lower refractive index, superior optical homogeneity, smaller thermal expansion coefficient, excellent chemical resistance and extremely low fluorescence, making it ideal for manufacturing a wide range of optical elements.
Tuniu Optics supplies UV fused silica plane windows in uncoated and anti-reflection coated versions, with optional AR coatings covering UV, VIS, NIR and SWIR spectral bands.
Parameters
| Material | UV Fused Silica |
| Diameter Tolerance | + 0.0/ – 0.1 mm |
| Thickness Tolerance | ± 0.2 mm |
| Surface Accuracy | λ/10@633 nm |
| Parallelism | < 5 arcsec |
| Surface Quality | 20/10 |
| Bevel | Protective Bevel 0.2~0.5 mm X 45° |
| Coating | Uncoated, AR@250-425 nm, AR@350-700 nm, AR@600-1100 nm, AR@900-1700 nm |
Model
| Size*, Dia. X T, mm | Coating | Surface Accuracy** |
| Φ12.7 x 3.0, Φ25.4 x 6.0, Φ50.8 x 10.0 Φ12.5 x 3.0, Φ25.0 x 6.0, Φ50.0 x 10.0 | Uncoated, AR@250-425 nm, AR@350-700 nm, AR@600-1100 nm, AR@900-1700 nm | λ/10@633 nm |
* Other Dia. Upon request. ** λ/4@633 nm available.