Ergonomic vertical vision redirection

摘要

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.

主权项

1. A curved fresnel prism panel positioned to vertically redirect light rays passing through the prism panel, the fresnel prism panel comprising a suitable optical material element with an array of horizontal parallel prisms on the optical material element, and the optical material element being horizontally curved such that the parallel prisms are horizontally curved, the optical material element on an inner side having a first radius of curvature and at an outer side having a second radius of curvature, larger than the first and with a displaced center of curvature such that the optical material element is thicker at left and right sides than at its middle.