OMSAS-BB is a high-precision thermal calibration source developed for accurate characterization and verification in the manufacturing and integration processes of infrared (IR) and thermal imaging systems. Playing a critical role in electro-optical system manufacturing, OMSAS-BB ensures high accuracy, repeatability, and long-term stability in thermal sensors. With 4”, 12”, and 20” aperture options, it offers scalable solutions for calibration needs at the laboratory, production line, and system levels.