John Penczek is a senior 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 involved display metrology development for 3D, transparent, and augmented/virtual-reality displays. Dr. Penczek is also a long-serving sub-committee chair in the ICDM, and a US expert on display metrology in IEC and ISO international standards.