Douglas Kreysar was appointed chief operating office at Radiant Imaging, a Duvall, Wash., maker of products for the display and illumination industries, the company announced today. Kreysar has been vice president of operations at Radiant since 2001. He received a bachelor's degree in physics from Vanderbilt University in 1991 and a master's in applied physics from the University of Michigan, Ann Arbor, in 1993. Before joining Radiant, Kreysar was head of the optical design group at North American Lighting Inc. (NAL), an automotive exterior lighting supplier.