Klaus Biedermann is professor emeritus in physics at KTH (Kungliga Tekniska Högskolan), the Royal Institute of Technology in Stockholm. He was born in 1935 in Munich, Germany, and first learned about Lippmann photography from his father, a physicist. Did his diploma thesis in nuclear physics at the Technical University of Munich and received his Ph.D. on optical transfer theory at the Department of Photographic Science with Hellmut Frieser, who had started research at Siemens in 1930 as Gabor did; together with Hellmut Frieser met Gabor in 1964. Did a postdoc project in 1966 at KTH on the role of the photographic process for holography. Arranged for Gabor's Nobel lecture 1971 the display of Gabor's holographic portrait, and a copy of it later at the lab's "Laser Grotto," the very early and still active science center at KTH. Biedermann was acting professor in 1972, full professor in 1978, and was responsible for the independent Institute of Optical Research, offering R&D and service to industry. Optics happened to have its most fruitful quarter century then. With competent colleagues and ambitious students, the two laboratories reaped research achievements, most PhD exams at KTH, new technology in old industries and start-up companies, and young optics researchers and professors in industry and academe in Sweden and abroad.