Henning Rehn worked in various roles in several optics industries, in illumination and imaging optics. He was a project manager in Carl Zeiss Jena, a Principal Key Expert of Optical Design in OSRAM, Berlin, and a team leader of the optical design at FISBA in St. Gallen, Switzerland. He is currently starting his own optical consulting business. Julius Muschaweck has more than 25 years of experience in illumination optics, including the roles of Senior Principal Key Expert at OSRAM, and Principal Optical Scientist at ARRI. As an independent consultant, founder and owner of his company, JMO, Julius Muschaweck aims to help companies perfect their illumination optics through innovative solutions and expertise.