An educational film intended for engineers and scientists, Visions in Infrared reviews basic infrared physics and technology as they are used to solve problems in diverse industries. Infrared energy is naturally emitted by nearly all objects in our environment but our natural ability to sense this energy is very limited. Infrared technology extends these limits so that this portion of the electromagnetic spectrum, just beyond the visible, can be made usuful in many ways. There are several basic components of the infrared system which can be manipulated in order to meet various measuring requirements. These are: object, atmosphere, lens, scanning mechanism, limiter, detector, and data processing. By analyzing and then designing the infrared system around these parameters, measurement problems can be solved in many industries. Basic black and white, portable thermal infrared imaging systems are used in the building, electrical, steel and petrochemical industries. Line scan systems are used for product control and fault detection in process industries. More sophisticated imaging systems employing complex data processing are used in manufacturing development and aerospace research.