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Optical Surfaces has introduced the OS-Z range of mirror mounts, developed to support off-axis paraboloid, spherical and flat mirrors in a way that overcomes a number of constraints imposed by general-purpose mounts.

According to the company, two key advantages gained by using an OS-Z mount are rapid alignment using an optional pre-alignment aid and the ability to routinely accommodate wedge-back and parallel-back mirrors.

In addition, in applications where long-term stability and stress-free mounting are important, special factory-fitted features allow this to be easily achieved.

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Key features and specifications

  • OS-Z range provides rapid alignment and can accomodate wedge-back and parallel-back mirrors
  • It is constructed of black anodised aluminium
  • Six models of the OS-Z mount provide a secure, stable and compact platform for mirror diameters ranging from 90mm to 250mm
  • Angular alignment can be made about two axes by means of dual-action adjusters with fine-screw and ultra-fine differential micrometer action; using these mounts, it is possible to rapidly align a mirror within a few arc-seconds
  • To facilitate rapid and simple mounting onto an optical table or other support, each mirror mount comes with a baseplate
  • OS-Z mounts can be fitted with x-y-z linear stages if required, allowing the user to accurately control positioning of mirrors up to 5°

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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