5micron GmbH is a Start-Up located in the innovation & technology hub in Berlin-Adlershof since January 2015. Stakeholder and Managing Directors are Dipl. Ing. Ute Franke and Dr. Jean Blondeau. The company was founded with the business idea ‚Development of measurement systems for highest precise topographic analyses of surfaces and surface close layers’. The company started with 2 contracted projects from Airbus and Rolls-Royce. 5micron‘s portfolio is based upon photonics technology for high-precision measurement systems. The successfully completed technology development projects for the aerospace industry are based on optic methods, using light for measurement tasks. Current projects are the monitoring and measurement of wing surfaces of aircrafts during flight. The measurement system detects defects or variations in the surface up to 20µm. For further projects the measurement systems have been miniaturized to fit in an endoscope for engine maintenance purposes (customer Rolls Royce). In this context specialized illumination devices as a light communicating license plate for drones have been developed. This drone tagging is operating with modulated flashes transmitting covert data or any other information. It can be adjusted to replace external lights of an aircraft position, as the light power [candela] meets aerospace requirements.