"Our diamond turning facility compliments the coatings service that we provide. We can offer complex plastic components coated with hard wearing, plasma Ion assisted thin film optical processes."

Iain Clement, Head of Diamond Machining

A few important features

• High volume and bespoke capabilities
• Sub-wavelength accuracy
• Low scatter levels
• Aspeheric optical services

Capability

The diamond turning facility enables Siltint to manufacture complex optical components in prototype or volume quantities, providing fast delivery for applications where "off the shelf" products do not suffice. This utilizes state-of-the-art single point diamond turning technology allowing us to machine any rotationally symmetric surface with sub-wavelength accuracy and extremely low scatter levels. For example, typical accuracy on an acrylic surface would be 0.3um form error and 10nm roughness (Ra), or on an aluminium surface 0.2um form error and as low as 6nm roughness.

In addition, with its range of high vacuum coating equipment Siltint has the in-house capacity to enhance diamond turned lenses with anti-reflection and beamsplitter coatings as well as resin hardcoating for surface protection. Surface protection and additional mirror finishes can be provided on aluminium parts.

Applications

Specific applications for this process incluce...

• Hand portable systems
• Aircraft systems
• Medical diagnostics
• Optical displays
• Sighting
• Tracking
• Alignment systems
• Camera lenses
• Viewfinders
• Infrared systems

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