Sapphire Materials:
Sapphire is grown using various different methods, each with its advantages. By offering Sapphire grown by Stepanov, Czochralski, Kryopolus and HDSM methods, Roditi ensure that the specification is met with the best production time and cost in mind.
Boules, Ingots and Blanks
Unprocessed, single crystal Sapphire takes the form of a boule before being cut and polished into the required forms.
The boule is a large, cylindrical-like piece of Sapphire with no ground, polished or flat faces and offers any crystallographic orientation of components, such as c, m, r and a-cut. Because of Sapphire's tremendous hardness, the cutting and processing is done with diamond tools.
Boules such as this are processed into blanks and ingots ready for further processing and polishing. Such blanks and ingots are uniformly shaped, usually as cylinders, and have ground surfaces.
Features:
Transmits Wavelengths Ranging From UV to Mid-Infrared
Extreme Surface Hardness Chemical Resistance
Thinner and Stronger than Standard Glass Windows
High thermal conductivity
High bulk damage threshold
PARAMETER
Dimension customized(≤500mm)
Dimensional tolerance: ±0.03mm
Surface quality (scratch & dig) :60/40
Surface accuracy: λ/10 per @633nm
Clear Aperture >85%, >90%
Parallelism tolerance: ±2"-±3'
Bevel:0.1-0.5mm*45°
Sapphire Optical window Specifications:
| Name |
Irregular sapphire optical window |
| Material |
Sapphire single crystal |
| Diameter |
0.1-500mm |
| Diameter Tolerance |
±0.03mm |
| Thickness |
0.1-100mm |
| Thickness Tolerance |
±0.03mm |
| Transmittance |
99% At 635nm After Coating |
| Use |
Optical |
| Application |
Scanner/Watch glasses/Semiconductor applications/Medical devices |
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Fields of Application for the Optical Sapphire Window
-Scanner
-Watch glasses
-Semiconductor applications (e.g. wafers)
-Cell phones (displays and display protection)
-Infrared and UV applications (e.g. sensors, monitoring systems, thermal cameras)
-Medical devices (e.g. endoscope windows, scalpels and laser surgery, light guides in dermatology)
Military applications (e.g. night vision devices and cameras, satellite and space technology, control systems)
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