Ergonomic vertical vision redirection

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.