Jan Lalek is a co-founder and the CTO of GLOPTIC. Jan holds master’s degree in physics and is a member of CIE Poland and the Polish Committee for Standardization. He is the leading physicist and inventor, holder of many patents in the field of photometry and colorimetry. Jan has been involved in the development of products and technologies offered by GL OPTIC. His area of interest includes calibration procedure development and modernization. Jan is the author of the concept of calibration equipment and realization of spectral irradiance standard. His ideas were implemented and installed in Calibration and Research Laboratory of Optical Radiation (CARLO) and were presented in international and domestic conferences.