Gemstones (Alumina Bearings) for Optical Equipment
High-precision alumina bearings with transparency close to that of artificial ruby.
In the optical equipment industry, bearings that support the fine movements of lenses and precision parts require high accuracy and durability. In particular, contamination by foreign substances that could affect light transmission and refractive index, as well as precision degradation due to wear, are critical issues that significantly impact product performance. Our precious stone (alumina bearings) achieve transparency nearly identical to that of synthetic ruby, along with high wear resistance and precise dimensional accuracy, contributing to the enhancement of optical equipment performance. 【Application Scenarios】 - Precision measuring instruments - Cameras - Microscopes - Telescopes 【Benefits of Implementation】 - Realization of high-precision operation - Extension of product lifespan - Improvement of optical performance
basic information
**Features** - High wear resistance - High dimensional accuracy - Transparency close to that of synthetic ruby - Consistent processing for a wide variety of products and mass production - Capability to provide near-net-shape blanks with dimensions close to completion **Our Strengths** Citizen Fine Devices leverages the technology cultivated over many years in the field of functional components that require small size, precision, and high detail to provide customers with high-quality products. Our strengths lie in our integrated processing system from granulation to molding, firing, and completion, as well as stable quality achieved through our in-house processing machines.
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Applications/Examples of results
【Usage Examples】 ■Movement for wristwatches ■Signal indicator ■Analog meter *For more details, please refer to the PDF document or feel free to contact us.
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The area where Citizen Fine Devices demonstrates its strength is in the realm of functional components that require small size, precision, high accuracy, and high detail. We believe that our mission is to continue providing high-value-added microdevice products by leveraging the unique technologies we have developed over many years. Utilizing metal processing technology rooted in watch manufacturing, we have consistently supplied small, high-precision components to our customers for many years through a fully integrated production line that encompasses process design, machining, assembly, and functional testing, along with the unique development of our own processing machines. Additionally, mass-producing components with high precision and efficiency using brittle materials is also one of our core technologies. By integrating material technology with ultra-precision machining, thin-film technology, and bonding technology, we produce not only high-precision components such as ceramics and quartz but also high-quality functional device products like liquid crystal devices and sensing devices. Continuing to provide high-value-added products to the market is a significant dream for our employees. We will contribute to the creation of new value through manufacturing driven by the challenge spirit of each individual, working towards the realization of that dream.

















































