Request InfoPI (Physik Instrumente) LP, Motion Control, Air Bearings, Piezo MechanicsPI (Physik Instrumente) L.P. has introduced the E-709, a piezo nanopositioning controller that provides digital functionality in the size of a paperback for the price of analog. Fifth-order polynomial digital linearization ensures higher accuracy than analog, and two notch filters allow faster response and piezo operation at higher frequencies. A fast servo update rate also ensures responsiveness. The digital-to-analog converter in-the-loop architecture guarantees positional stability. 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Since 1947, three generations of family leadership have guided LaCroix Precision Optics to become the premier precision optics...Photonics Buyers' GuideOhara CorporationOHARA manufactures more than 130 environmentally safe optical glass types, free of both lead and arsenic. More than 300 tons of optical glass are melted per month, available in the following forms of...