Arden Unveils Optical Metrology Gear

Arden Photonics to unveil new metrology technology, the AWS-50 range of wavefront sensors, developed by European R&D organisation QinetiQ

October 7, 2003

2 Min Read

SOLIHULL, U.K. -- Arden Photonics Ltd– supplier of innovative products and services to the world’s Photonics Industry – will tomorrow unveil a new metrology technology developed by leading European research and development organisation QinetiQ. The new range of instruments is being made available to researchers and manufacturers of optical components and assemblies, hard discs, contact lenses and precision mechanical components.

The move sees Arden Photonics expanding into the optical metrology market. Arden will be showing – in conjunction with the Photonics Cluster - the AWS-50 range of wavefront sensors for measuring the form of lenses, flatness of mirrors and other optical components, as well as surface shape of silicon substrates and optics.

At the heart of the AWS-50 wavefront sensor is an IMP TM (Image MultiPlexing) diffraction grating designed by QinetiQ, who are based at Malvern in Worcestershire. The two companies reached an agreement allowing Arden Photonics to exploit their novel technology, which was developed for use in atmospheric adaptive optics, in other target markets. The IMP TM diffraction grating works by imaging two separate planes of the wavefront onto a CCD array. From this information, Zernike polynomials can be calculated or the entire wavefront reconstructed. The measurement of the wavefront is therefore performed in real time, does not require a coherent light source and is not sensitive to vibration which is a draw back of the traditional interferometric systems.

David Robinson of Arden Photonics said “This technology offers a robust, real time wavefront measurement method which we expect to bring valuable benefits to the industry. It will enable manufacturers of a wide range of precision optical and mechanical products to improve quality by taking high accuracy measurements wherever they are needed.

“It marks another step forward for Arden and its growing reputation in the Photonics industry and we are looking forward to taking the AWS-50 to the market place – starting tomorrow”.

Arden Photonics Ltd.

QinetiQ Ltd.

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