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Precision Glass Discs
Precision glass discs from SCHOTT refer to small glass windows for a variety of optical and optoelectronic applications.
Product Description
Precision glass discs can be made from a variety of flat glass materials. They are typically round in shape, but can also be offered in any other contour. Diameters of the glass discs can be as small as 1 mm and thickness could range from as low as 100 µm to more than 1 mm. Upon request, SCHOTT also can offer customised anti-reflective or beamsplitter coatings.
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Product Advantages
SCHOTT offers customized solutions with the following advantages:
- Application-specific glass recommendation
- Various shapes are available
- Tight tolerances
- Customized coating services
- Washing and packing in cleanroom
Applications
Glass discs are used in a variety of optical and optoelectronic applications, such as:
Technology
Glass discs are manufactured using flat glass substrates. A high precision mask featuring the desired final disc shape is placed onto the glass substrate. Using different abrasive technologies, the glass between the masked portions of the substrate is taken away. After removal of the mask and a cleaning process, the glass discs are ready for packing.
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Features / Specifications
SCHOTT offers glass discs of the following standard glass types:
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| Glass |
Description |
Alpha (20°C – 300°C) in 10 –6 K -1 |
Tg in °C |
Dielectric Constant at
1 MHz |
| D 263 |
Chemically resistant
borosilicate glass
with high optical
quality |
7.2 |
557 |
6.7 |
| BF 33 |
Borosilicate glass
with high
transparency |
3.25 |
525 |
4.7 |
| B 270® |
Colorless crown
glass with high
transparency |
9.4 |
533 |
7.0 |
| AF 37T |
Aluminium-silicate glass (free of arsenic and alkalis) |
3.77 |
711 |
5.5 |
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The respective shape of the contour will be designed based upon the individual customer requirements. Optical coating (AR or beamsplitter) can be provided either single- or double-sided.
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Forms of Supply and Product Packaging
SCHOTT Electronic Packaging offers individual packaging solutions based on the diverse needs and subsequent processing systems of our customers (e.g. packaging in trays to allow individual pick-up of discs using vacuum).
Please feel free to contact us for detailed information.
Quality Assurance
All precision glass discs are produced under clean-room conditions (Clean Room Class 10,000, ISO Category 7; US Federal Standard 209E; DIN EN 150 14644-1) and packed under a flowbox of Clean Room Class 1,000.
100% inspection by automated vision system is available as an added option. Upon request, discs can also be washed before packing.
For more information on the different quality assurance programs, please click on our quality assurance process pages for more information.
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SCHOTT Careers
SCHOTT Careers