By the end of WW2, Tigerstedt had designed and built a prototype helmet-mounted personal infrared viewing device. Clamped to a helmet, the equipment combined an infrared light source and a electronic vision devices. Its energy came from a power pack and battery which was carried in a knapsack on the operator’s back. A Jaeger Company from “Verenimijä” was equipped with the devices on a trial basis and ihey were used in combat in the last weeks of WW2. In the early 1950’s Nokia sold the technology to the US Army for a considerable amount.
By the end of WW2, Tigerstedt had designed and built a prototype helmet-mounted personal infrared viewing device. Clamped to a helmet, the equipment combined an infrared light source and a electronic vision devices. Its energy came from a power pack and battery which was carried in a knapsack on the operator’s back. A Jaeger Company from “Verenimijä” was equipped with the devices on a trial basis and ihey were used in combat in the last weeks of WW2. In the early 1950’s Nokia sold the technology to the US Army for a considerable amount.