Protective mask, in particular diving mask, with optical display system
US11999453B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2019 |
| Grant date | Jun 4, 2024 |
| Priority date | — |
| Expiry date | Jun 8, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/011
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Protective mask (1) comprising a frame (5) for mounting on a user's face, a window (2) carried by said frame, an optical display system (10) which is capable of projecting an image, and a prism (20) capable of receiving said image from said display and forwarding it, characterised in that the prism (20) has a first (21) and a second (22) active face and a basal face (23), the window having, on its inner face (3), a projection area (30), and said display and said prism are configured so that said display projects said image onto the first active face (21), the image crosses the prism and is reflected by the basal face (23) to the second active face (22), the image is projected from said second active face (22) onto said reflection area (30) of said window (2), and said window projects said image into a user's eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.