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News

DSI introduces deposition process for complicated shapes.

Deposition Sciences : 21 August, 2007  (New Product)
Lens coatings can now be accurately applied to a range of complex and mult-faceted shapes using new deposition process.
Deposition Sciences (DSI) develops, manufactures and applies highly specialised, durable coatings onto complex shapes and multifaceted substrates via the IsoDyn LPCVD (low pressure chemical vapour deposition) process. Ideal for coating almost all types of optical glass, including ball lenses, crystalline materials, ceramics and metals, DSI's proprietary LPCVD is a high temperature process (approx. 500 degrees C) that features uniform coatings on surfaces, both inside and out.

These high performance coatings are deposited over the entire surface of an irregularly-shaped optic, in a single-pass operation. The LPCVD deposition method is a thermally driven, organo-metallic process that is configured to deposit multi-layers of silicon dioxide, tantalum oxide, and titanium dioxide, as needed. Fully automated, DSI's process is capable of manufacturing very complex filters, providing coatings with service temperatures as high as 700 degrees C. The multilayered coatings are resistant to thermal shock and can be deposited on optics as small as 0.3 mm. They also feature highly stable wavelengths that do not shift with temperature. With ball lens optics, the uniformity of the coatings simplifies assembly and eliminates the need for specific orientation of the part, greatly reducing labor-intensive, device-assembly costs.

All LPCVD IsoDyn coatings from DSI meet or surpass the rigid Mil-C-675 testing standards for severe abrasion, adhesion, humidity and salt fog tests, making them ideal for a wide variety of high temperature materials.
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