| Message: | Fused silica is a superior optical material possesses excellent optical, chemical and physical properties what is formed by chemical combination of silicon and oxygen. Advantages of fused silica material include: good UV and IR transmission, stability and resistance to thermal shock over large temperature excursions, low thermal expansion, wider thermal operating range and high laser damage threshold.
Attribute Specification
Material Fused Silica
Typical Diameter (Φmm) 8.0, 10.0, 12.7, 15.0, 20.0, 25.4, 30.0, 50.8
Typical Thickness (mm) 1.0, 2.0, 3.0, 4.0, 6.35
Diameter Tolerance (mm) +0.0/-0.2 (General), +0.0/-0.02 (High Precision)
Thickness Tolerance (mm) ±0.2 (General), ±0.005 (High Precision)
Clear Aperture >80% (Small Size), >95% (Large Size)
Parallelism 3 min. (General), 3 sec. (High Precision)
Surface Quality 60/40 (General), 10/5 (High Precision)
Flatness (per 25mm@633nm) λ/4(General), λ/10 (High Precision)
Bevel (face width x 45°) |
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