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visible & infrared interferometers & accessories thermal imaging & thermography non-contact 3D and thickness measurement systems for distance & thickness measurement optical test instruments standard test charts & custom designed reticles optical components & optomechanical assemblies high precision motion & control systems high speed, multichannel, self-calibrating streak cameras microlens arrays & micro-optical components & structures High power laser beam delivery systems Pre-owned optical test equipment for sale	Armstrong Optical Transmission Spheres and Flats 100mm & 150mm transmission spheres, flats and aperture converters. High accuracy - lambda/10 and lambda/20 as standard High quality precision housings. Sturdy and Robust Compatible with Zygo & Wyko systems Optical calibration services available. 4 inch transmission spheres Contact us to discuss your interferometer accessory requirements. Caliball Optical Perspectives Caliball Accessory For the calibration of Phase-measuring interferometers. Silicon Nitride construction in kinematic mount. Simple and easy methodology. Sturdy and Robust Compatible with all makes of interferometer Calibrate a transmission sphere in <10 minutes. Click here to download the pdf "A Practical implementation of the Random Ball Test" Click here to download the pdf "Original calibration of transmission spheres" Click here to download the pdf "Ball averaging evaluation" Contact us to discuss your interferometry calibration requirements.   © 2006 Armstrong Optical Ltd    |   tel: +44 (0) 1604 654220    |  e: info@armstrongoptical.co.uk