Van H. Potter has been appointed vice president of display products at Three-Five Systems Inc., a Tempe, Ariz.-based provider of display system solutions and engineering and manufacturing services. . . . BFi OPTiLAS has opened a European facility for the calibration of Ophir power and energy meters. Ophir Ltd. is a manufacturer of precision laser-power energy meters and beam analysis systems. . . . Taiwan-based United Epitaxy Co., a manufacturer of yellow, red, blue, green and white UHB LEDs, has ordered an AIXTRON AIX 2600G3 HT MOCVD planetary reactor for production of III-nitride ultrahigh-brightness LEDs. AIXTRON also announced that National Central University, in Chung-Li, Taiwan, has reported the successful operation of electrically pumped violet laser diodes developed on an AIX 200/4 RF system.