| Company | Phone | City | State | Country | Email |
|
| Kreischer Optics Kreischer Optics, Ltd. uses CNC technology to manufacture custom optical components including aspheric, cylindrical and spherical lenses, mirrors, prisms, windows and master test glasses. | (815) 344-4220 | McHenry | IL | USA | optics@kreischer.com |
| Kyburz Sapphire Kyburz Sapphire specializes in processing of custom made sapphire components. Optical systems in medical, aerospace and electronic industries are equipped with components from Kyburz Sapphire. | +4132 355 24 22 | Safnern | | Switzerland | info@kyburz-sapphire.ch |