Fused silica is formed by chemical combination of silicon and oxygen. Advantages of fused silica material include good UV and IR transmission, low thermal expansion, providing stability and resistance to thermal shock over large temperature excursions, wider thermal operating range and high laser damage threshold. Used for windows, lenses, prisms and mirror substrates.
Specifications:
| Material: | UV grade Fused Silica |
| Dimension Tolerance: | +0.0, -0.1mm |
| Thickness Tolerance: | ± 0.1mm |
| Surface quality: | 60/40(Standard), 10/5(High Precision) |
| Clear Aperture: | >85% |
| Flatness: | λ(Standard), λ/10(High Precision) per 25mm@633nm |
| Parallelism: | 1' (Standard), 10" (High Precision) |
| Bevel: | <0.25mm X 45° |
| Coating: | Upon requirement |
Typical Sizes:
|
Round Shape |
Φ5.0；Φ10.0 ；Φ12.7；Φ15.0；Φ20.0； Φ25.4；Φ30.0；Φ38.1；Φ50.8；Φ76.2 |
|
Square Shape: |
5.0x5.0 ；10.0x10.0 ；15.0x15.0 ； 20.0x20.0；25.0x25.0；50.0x50.0 |
|
Thickness(mm): |
0.5；1.0；1.5；2.0；3.0； 4.0；5.0；6.0；8.0；10.0 |
How to order Windows?
Example:
Material:N-BK7
Diameter:Φ25.4+0.0/-0.1mm
Thickness:1.0±0.1mm
Surface quality: 60-40 S/D
Flatness: λ/2 per 25mm @633nm
Paralelism: <1 arc minute
Coating:Both side AR,R<0.25% @1064nm, AOI=0°