Helmet with night vision system and optic capable of being substituted for day vision

摘要

A helmet with night vision system. The system includes an image generator, an optical mixing system for mixing the light rays output by the night vision system and the light rays output by the image generator and a fixed optical system downstream of the optical mixing system. All of the night vision system and the optical mixing system can be removed and a substitute optical system can be inserted for daytime vision. The substitute optical system has the same optical characteristics as the optical mixing system, but has a transmission coefficient higher than that of the optical mixing system. The substitute system is optimized for day vision while the mixing system is optimized for night vision. The helmet may be used for pilots of combat helicopters or airplanes.