John Penczek is a Consulting Engineer at Luminex Technologies, a Sr. Research Associate at the University of Colorado, Boulder, and Guest Researcher at the National Institute of Standards and Technology, Boulder, Colorado. Dr. Penczek has been developing optical and electro-optic devices and systems for over 30 years, much of that time in the information display technology area. During that time, he was involved in product development at starts-ups, corporate research at large companies, and applied research at NIST and several universities. His more recent research involves display metrology development for 3D, transparent, augmented/virtual reality displays, and reflection/transmission characteristics for those technologies. Dr. Penczek is member of the ICDM Executive Committee and a long serving chair in the Fundamental measurements and Reflection & Transmission sub-committees. In addition, he has over 20 years of experience as a US expert and author on display metrology in IEC and ISO international standards.