Float Glass Windows
Float glass windows are made of SCHOTT micro-float borosilicate glass, offering excellent high-temperature resistance, chemical stability, and optical performance. Its low thermal expansion coefficient is compatible with silicon wafers, making it ideal for high-temperature and precision optical applications. The glass has excellent flatness, broadband transmittance from ultraviolet to near-infrared, and can withstand continuous operation at 450℃ and rapid thermal shock. It has high chemical stability and resists acids, alkalis, and organic solvents, and is widely used in semiconductor lithography, medical equipment, laser protection, vacuum systems, and optical instruments. We offer custom sizes, shapes, and coatings to meet various industrial needs.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Typical Diameter | 8.0 mm、10.0 mm、12.7 mm、15.0 mm、20.0 mm、25.4 mm、30.0 mm |
| Typical Thickness | 1.0~50.0 mm |
| Diameter Tolerance | +0.0/-0.1 mm |
| Thickness Tolerance [Standard Type] | ±0.2 (Standard Type) |
| Thickness Tolerance [High-Precision Type] | ±0.005 (High-Precision Type) |
| Clear Aperture [Small Size] | >80 % (small size) |
| Clear Aperture [Large Size] | >95 % (large size) |
| Parallelism [Standard] | 3 ′ (standard) |
| Parallelism [High Precision] | 3 ″ (high precision) |
| Surface Figure [Standard] | λ/2 (standard) |
| Surface Figure [High Precision] | λ/10 (high precision) |
| Surface Quality [General-purpose] | 60/40 (general) |
| Surface Quality [High Precision] | 10/5 (High-Precision) |
| Chamfer [45°] | <0.25x45 ° |
| Coating | Uncoated, AR, HR, PR, coating, etc. |
Datasheet
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