Light guide, image display device and method for generating image
US7942541B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 2006 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Mar 16, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133606
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light guide including a transparent substrate; a plurality of guide members formed on a first surface of a transparent substrate, the guides have guide bases separated by an open area on the first surface of the transparent substrate having a width “a”, and the guide bases overlapping an area on the first surface of the transparent substrate having a width “b”, facing sides of adjacent guides each forming an obtuse angle with the first surface of the transparent substrate and, wherein the ratio “b” divided by “a” is substantially equal to N where N is an integer greater than 2 a transparent substrate having an incidence surface and a transmitting surface; and a plurality of guides each formed on the incidence surface of the transparent substrate and each guide having opposing side surfaces each forming an angle with the incidence surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.