More from Military & Defense Following is a transcript ... friendly knight or to pay tribute to a king would raise the visor of his helmet, to let that person see their face.

To follow where the pilot is looking, and in turn direct the appropriate view to the visor, the helmet must sense its position and orientation. It relies on a magnetic field, generated by a transm ...

military versions through 2022. The device transitioned from a helmet- or no-helmet goggle option, with a chest-mounted controller and thick cabling, to a helmet-mounted flip-up visor-like version.