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The Fraunhofer Institute for Manufacturing Technology (IPT) said recently that it will undertake the “MaGeoOptik†sub-project “Digital Photon Production†research park funded by the German Ministry of Education and Research to study how to make demanding quartz glass or diamond focusing lenses The production cost is lower and the quality is higher, thus opening up a new and larger optical product market. This lens is mainly used for high power lasers.
The research and development content is divided into three parts: First, the high-precision mold for the quartz glass lens is developed. To date, precision optics have been produced primarily by grinding and polishing techniques, but can also be fabricated in complex geometries using stamping processes using temperatures up to 1400 °C. At the heart of the “MaGeoOptik†project is the study of the properties of this high-temperature glass, combined with new mold replacement materials such as silicon carbide or boron nitride ceramics and glassy carbon.
The second is to develop a new diamond lens polishing control program. At present, the manufacture of single crystal diamond optical components can only be carried out by the grinding process. Because of its structural characteristics, such extremely hard materials are difficult to be modified, and therefore, the abrasive tools are seriously worn during processing. R&D personnel plan to develop new application models and develop corresponding axis control software solutions, making diamond lenses with complex geometries faster and cheaper, and more suitable for the commercial market.
The third is to establish a 100% non-destructive testing method for ultra-precision freeform lenses. This method will be a new high-precision optical measurement system for detecting the characteristics of lenses made of quartz glass or diamond. Compared to existing touch methods, the measurement speed of the method can be increased by six to ten times. In addition, the method can be used directly at the production site and can be integrated into an automated production process.
The research results of this project can be used not only to test new optical materials for high power lasers and other future applications, but also for industrial applications.
Abstract The application of optical systems is mainly in the manufacturing industry. Due to the need for focused (ray-guided) lenses, current applications in medical or aerospace technology are often limited. Because the new pulsed laser source produces radiation that exceeds conventional glass lenses and array devices. Quartz glass...
The range of applications for optical systems is primarily in the manufacturing industry. Due to the need for focused (ray-guided) lenses, current applications in medical or aerospace technology are often limited. Because the new pulsed laser source produces radiation that exceeds conventional glass lenses and array devices. Alternative optical materials such as quartz glass or diamond provide better transmission performance and are more resistant to high radiant and mechanical environmental influences. However, it is difficult to process these materials, and most of the quality inspection of freeform lenses can only rely on sampling.