The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 15, 2020
Filed:
Dec. 20, 2016
Csem Centre Suisse D'electronique ET DE Microtechnique Sa-recherche ET Développement, Neuchâtel, CH;
Guillaume Basset, Huningue, FR;
Giorgio Quaranta, Saint Louis, FR;
Abstract
An optical combiner including an array of pairs of resonating waveguide gratings. The waveguiding layer of the array, which includes the resonating waveguide gratings, is configured to guide at most ten guided light modes in the visible wavelength range. At least a portion of the resonating waveguide grating array is configured to incouple a portion of incident light on the array and to outcouple a fraction of that incident light. The outcoupled fraction has a predetermined wavelength λ in the visible and near-infrared wavelength range and has a predetermined spectral width Δλ. The optical combiner is preferably configured to be used in a near-eye display apparatus. The invention is also achieved by a near-eye display apparatus that is adapted to combine projected images provided by a light emitter with light provided by a scene observed by an observer looking through the optical combiner.