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:
Apr. 30, 2019
Filed:
May. 04, 2018
Thalmic Labs Inc., Kitchener, CA;
Stefan Alexander, Elmira, CA;
Matthew Bailey, Kitchener, CA;
Vance R. Morrison, Kitchener, CA;
Lloyd Frederick Holland, Kitchener, CA;
Joshua Moore, Elora, CA;
North Inc., Kitchener, CA;
Abstract
Systems, devices, and methods for eyebox expansion by exit pupil replication in wearable heads-up displays ('WHUDs') are described. A WHUD includes a scanning laser projector ('SLP'), a holographic combiner, and an optical splitter positioned in the optical path therebetween. The optical splitter receives light signals generated by the SLP and separates the light signals into N sub-ranges based on the point of incidence of each light signal at the optical splitter. The optical splitter redirects the light signals corresponding to respective ones of the N sub-ranges towards the holographic combiner effectively from respective ones of N spatially-separated virtual positions for the SLP. The holographic combiner converges the light signals to respective ones of N spatially-separated exit pupils at the eye of the user. In this way, multiple instances of the exit pupil are distributed over the area of the eye and the eyebox of the WHUD is expanded.