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In addition to supplying a range of standard specification off-axis paraboloids, Optical Surfaces offers a consultative design and manufacture service to produce custom off-axis paraboloids to fulfil the most demanding and specialist applications.

Standard & Custom Design Off-Axis Paraboloids

Off-axis paraboloids, sometimes referred to off-axis parabolic mirrors or off-axis parabola, provide optical designers with an unobstructed aperture allowing complete access to the focal region, as well as reducing the size and minimising the weight of a design.

They are especially suitable for broadband or multiple wavelength applications due to their completely achromatic performance. All together these advantages produce a cost-effective solution for many optical design problems with no compromise in performance. Production approved to ISO 9001-2008 the quality of off-axis paraboloids from Optical Surfaces is ensured using a range of interferometric and surface test measurements on all optics leaving the factory.

The company offers a wide range of coatings to enable optimised off-axis paraboloids performance in applications including beam collimation/expansion, FLIR testing, high power laser beam focusing, astronomical spectrographs, target projection, MTF referencing and MRTD testing.

Optical Surfaces off-axis paraboloids are used by many leading research establishments and companies around the world.

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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