Micro Photon Devices (www.micro-photon-devices.com) was founded in 2004 for transferring to industrial production the microelectronic and optoelectronic technology developed by DEI researchers for the detection, counting and picosecond timing of single photons, exploiting an expertise gained over more than 20 years. The mission of Micro Photon Devices was development and production of optoelectronic instrumentation and modules based on special microelectronic detectors (called SPAD Single Photon Avalanche Diode) and associated integrated circuits for detector operation (AQC Active Quenching Circuit). Silicon SPADs developed in CMOS compatible technology make possible to conjugate high detector performance with miniaturization, low power and development of integrated systems. SPADs in compound semiconductors extend photon counting applications to the near infrared spectral range (also to optical fiber wavelength). Micro Photon Devices was able to engage itself in custom design for specific applications of photon counting and timing with picosecond resolution.