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Optical Surfaces is offering a range of large, high-precision windows designed to protect sensitive optics and sensors in demanding applications such as aerial surveillance and reconnaissance.

The durable windows are created using infrared (IR)-transmitting materials including zinc sulphide and germanium.

The company operates in a stable manufacturing environment and leverages proprietary production techniques.

Also available from Optical Surfaces

  • Flexible windows — these debris shields are commonly used in ultra-high-power laser research settings to protect critical optical components from ablated materials while maintaining optical performance in the beam line
  • Laser windows — made using BK-7 and fused silica, for example, these high-precision devices offer a typical wavefront error of lambda/10 and a surface finish of 40/20 to 10/5
  • Dielectric coatings — these are designed to optimise the performance of high-power lasers; they provide minimum pulse distortion and maximum usable bandwidth and durability

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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