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Large Diameter Custom and Prototype Lenses

Optical Surfaces Ltd is a leading manufacturer of high precision custom and prototype lenses for the most demanding camera, collimator, and optical imaging system applications. The company has extensive experience of producing high precision singlets, doublets, meniscus, cylindrical and aspheric lenses up to 600 mm (24-inches) in diameter.

Large diameter high precision meniscus lens. Image Credit: Optical Surfaces Ltd.

From decades of producing large diameter custom lenses for leading research establishments, government institutions and industrial organisation worldwide – Optical Surfaces has built up an extensive range of test plates and tools to cover many lens sizes and radii. Customer specified noncircular lenses and air spaced lens assemblies are available on request.

Benefiting from a unique thermally stable manufacturing environment and working with high-stability materials such as Zerodur and Fused Silica, Optical Surfaces can routinely achieve a surface accuracy of better than lambda/20 p.v., surface roughness of less than 1 nm rms and smoothness of 10/5 scratch/dig on large diameter lenses. Combining this world class surface quality with a range of low reflectivity AR coatings on supplied large diameter lenses enables researchers to achieve the leading-edge optical performance and efficiency required by even the most demanding experiments.

Optical Surfaces Ltd has produced high precision optics and optical systems from its ISO 9001-2015 approved manufacturing facility for more than 50 years and today is accepted as one of the world’s leading manufacturers of large diameter lenses.

The company’s manufacturing workshops, and test facilities are deep underground in a series of tunnels excavated in solid chalk where temperature remains constant, and vibration is practically non-existent. With such stable conditions testing of large diameter, high precision lenses, particularly those with long path lengths, becomes quantifiable and reliable.

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