Helmet-mounted display system comprising a helmet-mounted display and a movable visor compatible with the use of binoculars

A helmet-mounted display system includes a helmet; detachable binoculars; a mechanical arch securely mounted on the front part of the helmet, the arch comprising: a display device; an optical position-detection device; a binocular attachment assembly; a movable visor having the following two main positions: a down use position, applied when the binoculars are not mounted, the visor covering the pupil-expansion combiner and leaving the optical position-detection device uncovered; an up use position, applied when the binoculars are mounted, the visor being situated on the top of the helmet and leaving the optical position-detection device uncovered.