EYEPIECE FOR A RESPIRATORY PROTECTION MASK, MASK PROVIDED WITH THE EYEPIECE AND HELMET AND SCAPHANDRE PROVIDED WITH THE MASK

摘要

The invention relates to an eyepiece (1) for a respiratory protective mask (2), comprising a transparent curved wall (9) bounded by a curved outer edge (4) and provided with an opening (11) with which is intended to cooperate a snout, relative to the mask (2) provided with the eyepiece (1) being in the position corresponding to a carrier having the right head and the horizontal axis of vision (S), the eyepiece (1) comprises an upper part (13) forming the usual binocular field of the wearer and whose shape called sphero-conical is generated by the displacement of an arc of a circle (C) rotating, on a given sector, around an axis of revolution (16) located in the vertical plane of symmetry of the wearer's head, inclined to the horizontal and the vertical and passing substantially in or near the middle area of the wearer's brain (R) and the area of the lips.