Ergonomic vertical vision redirection
US8917459B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2012 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | Feb 21, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An ergonomic vertical redirection vision system comprises glasses or goggles with lenses modified to include a fresnel prism that vertically redirects light. The curved fresnel prism is a novel curved refractive element with unique advantages compared to a flat fresnel prism. The curved fresnel prism may be achromatized by the addition of an appropriate diffractive surface thereby creating a hybrid achromat or diffractive/refractive optical element (DROE). Looking through the modified eyewear will redirect the user's visual field up or down, depending on the configuration. Upward vision redirection improves ergonomics and aerodynamics for several sports including bicycle riding, swimming, downhill ski racing, and motorcycle racing. Downward vision redirection improves the ergonomics of reading a book, working on a laptop or pad computer, or taking notes in a class.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.