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High-precision hyperbolic optics from Optical Surfaces are suitable for use in optical telescope systems where good off-axis performance is an important requirement.

The company’s hyperboloids have been used in many deep space and Earth observation satellites, including the European Space Agency’s XXM and Nigeriasat-2.

Key information

  • The hyperbolic optics can be produced with diameters of up to 500mm, typical wavefront error of lambda/20 P-V, surface finish of 10/5 and micro-roughness of less than 1.2nm RMS.
  • They can be supplied mounted or unmounted and with a coating optimised for the particular application.
  • Optical Surfaces can also produce hyperboloids with light-weighting options.

Optical Surfaces

Optical Surfaces Ltd has been producing large and demanding high-precision optical components and systems for more than 40 years and is today internationally acknowledged for its technical expertise, attention to quality and customer service.

With the main workshops and test facilities deep underground in an area excavated from solid chalk, temperatures remain constant year-round and vibration is practically non-existent. These are important considerations when making, mounting and testing high-precision optics. Working with these natural advantages Optical Surfaces Ltd is able to supply high-precision off-axis parabolas, spherical and flat mirrors, etalons, aspherics, reference flats, windows, collimators and beam expanders for the most demanding applications. With such stable conditions, testing, particularly with long path lengths, becomes quantifiable and reliable. Investment in large-aperture Fizeau, Zygo GPI, Flashphase, Twyman Green, Scatterplate, and Laser Unequal Path interferometers allows detailed testing of the largest-diameter optics. Topographic and fringe analysis provides precise testing of surface roughness and confirms the wavefront of various surface forms. A rolling programme for calibration of test optics where possible to national standards and production approval to ISO 9001-2008 ensure that the quality of optics from Optical Surfaces is second to none.

Today the company is a trusted supplier to leading scientific, astronomical and defence establishments including many space projects worldwide.

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