US 11,999,453 B2
Protective mask, in particular diving mask, with optical display system
Eric Marcellin-Dibon, Vaucresson (FR); Philippe Renaud-Goud, Grenoble (FR); and Cédric Siourakan-Badalou, Grenoble (FR)
Assigned to Microoled, Grenoble (FR)
Appl. No. 15/734,919
Filed by Microoled, Grenoble (FR)
PCT Filed Jun. 6, 2019, PCT No. PCT/FR2019/051359
§ 371(c)(1), (2) Date Dec. 3, 2020,
PCT Pub. No. WO2019/234361, PCT Pub. Date Dec. 12, 2019.
Claims priority of application No. 1854933 (FR), filed on Jun. 7, 2018.
Prior Publication US 2021/0229786 A1, Jul. 29, 2021
Int. Cl. B63C 11/12 (2006.01); G02B 27/01 (2006.01)
CPC B63C 11/12 (2013.01) [G02B 27/0172 (2013.01); G02B 27/0176 (2013.01); B63C 2011/121 (2013.01); G02B 2027/011 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A protective mask, in particular a diving mask, comprising:
a frame able to be mounted on the face of a user;
a window carried by said frame;
an optical display system, which comprises:
a display capable of projecting an image, and
a prism capable of receiving said image from said display and forwarding it;
characterized in that;
the prism has a first active face and a second active face and a basal face;
the window is a flat window that, on the internal face thereof, has a reflection area; and
said display and said prism are configured and disposed so that:
said display projects said image onto the first active face of the prism,
the image passes through the prism and is reflected by the basal face of the prism towards the second active face,
the image is projected from said second active face of the prism onto said reflection area of said window
said window sends said image into the eye of the user, and
a lens is placed on the optical path between the prism and said reflection area, wherein the prism comprises, apart from said first active face and said second active face two other inactive lateral faces each inactive lateral face extending from said basal face and joining at a top of the prism.