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 |
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)
