Robert O’Leary, formerly engineering manager at PerkinElmer Optoelectronics, has joined Optical Coating Corp. as president and CEO. Optical Coating's founder, Dan Jasinski, will remain CTO and corporate director of the Natick, Mass., company, which makes vacuum deposited thin-film coated optical products and patterned optics.. . .aptura Machine Vision Solutions, of Wixom, Mich., announced it has hired Steven Prehn to expand its core machine-vision project management and engineering services capabilities. Prehn has been responsible for the launch of various advanced image processing products and has held positions at Pixel Velocity Inc., Electro Scientific Industries and Integral Vision.