NASA’s Jet Propulsion Lab discovered and patented a CMOS active pixel sensor that Envision uses for high-resolution industrial radiography or x-ray imaging. With this efficient, digital industrial radiography, x-rays are converted to photons using an intimate contact conversion screen. Photons strike tiny 39micron pixels and are converted into electrons stored in capacitors. Each pixel has its own amplifier that is switched on and off by timing and control circuitry right on the chip. Voltages from the amplifiers go through analog-to-digital converters right at the sensor. For more information on industrial radiography equipment, call 907-563-1141.