Dr. Harald Petry, who holds a PhD in physics, is the founder and shareholder of the company. When the company was founded in 1984, mainly customers from science and research made use of the photo-thermal effect and its application in the devices of Phototherm Dr. Petry GmbH. At the same time, Dr. Petry also pushed forward the industrial application of the products and quickly achieved great success in the marketing of the products. 2014 retired Dr. Petry from the operational business and as a general manager.