Request InfoOptical Perspectives Group LLCOptical Perspectives Group LLC has developed the CaliBall to calibrate phase-measuring interferometers. The 25.4-mm-diameter silicon nitride ball and its kinematic mount determine the errors in the transmission-sphere reference surface. The device is located with its center at the focus of the interferometer transmission sphere and aligned to better than one fringe. For calibration, a measurement is taken, and the ball is picked up, arbitrarily rotated and replaced in its mount. The center of the ball returns to its original position as a result of the kinematic mount. The process is repeated...See full productRelated content from Photonics MediaPRODUCTSPhotonics Spectra January 2024 IssueMicro Laser Rangefinder ModuleThe LSP-LRS-0310F from LumiSpot Tech is a micro laser rangefinder module made for distance gauging within the realm of photoelectric systems. 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