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Sapphire
Product Information
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Sapphire, as one of the hardest, most durable and scratch resistant materials, offers a broad transmission range from UV to mid infrared wavelengths (250 – 5000 nm). The material is able to withstand extreme environmental conditions and temperature changes.
SCHOTT offers sapphire windows in different supply forms, dimensions, and in customized processing stages.
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Material
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- Extreme hardness & high mechanical strength (withstands extreme environmental conditions)
- Excellent thermal conductivity/heat resistance
- High transmittance (UV to IR)
- Low dn/dT
- High electrical resistance (1014 Ohm-cm)
- High dielectric constant (9.39 from 1.0 MHz to 8.5 GHz)
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Advantages
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- SCHOTT offers sapphire material in optical quality
- Customized characteristics concerning dimensions and shapes (round, square, and more, diameters up to 300 mm)
- Polished surface and customized coating for different applications
- Best Practice in sapphire processing due to longterm experiences from handling optical materials
- Usage of most advanced equipment and state-of-the-art metrology for manufacturing and quality control
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Applications
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- Infrared applications (e.g. radiometry, optical guidance systems, gas analysis, medicine, safety and security)
- High-pressure and shock-loading applications (e.g. chamber or heater windows in chemical process equipment)
- Optical applications (e.g. optical components from UV to IR)
- Scratchproof sapphire watch glasses
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- Customized processing: polishing and coatings (e. g. antireflective coating)
- Plano and spherical surface
- Various shapes from round to square
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| Attribute |
Commercial Quality |
Precision Quality |
Ultra precision quality |
| Size (round and square) |
Ø from 10 to 300 mm
from 10 to 210 mm
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| Size Tolerance1 |
± 0,2 mm |
± 0,10 mm |
± 0,05 mm |
| Thickness1 |
From 1 to 40 mm
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| Thickness Tolerance1 |
± 0,2 mm |
± 0,10 mm |
± 0,05 mm |
| Parallelism1 |
< 5 arc minutes |
< 1 arc minutes |
< 30 arc seconds |
| Surface Accuracy (PV)1 |
5 λ (546 nm) |
λ/2 (546 nm) |
λ/10 (546 nm) |
Surface Quality
(scratch and dig) |
According to MIL
80 - 50 |
According to MIL
40 - 20 |
According to MIL
20 - 10 |
| Surface Roughness (Rq) |
< 10 nm |
< 3 nm |
< 1 nm |
| AR Coating |
Custom designed
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| Order quantity |
Upon customer specification. Please call sales representative.
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| Delivery Time (week) |
6 - 10 weeks, upon raw material availability.
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Sapphire - Product Flyer
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