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:
May. 05, 2026
Filed:
Dec. 06, 2022
Envisics Ltd, Milton Keynes, GB;
Ruisheng Lin, Milton Keynes, GB;
Timothy Smeeton, Milton Keynes, GB;
Yiren Xia, Milton Keynes, GB;
Jamieson Christmas, Milton Keynes, GB;
Envisics Ltd., Milton Keynes, GB;
Abstract
A display system comprises a waveguide forming a pupil expander. The waveguide comprises a pair of opposing surfaces arranged to guide a diffracted light field therebetween by internal reflection. An input port of the waveguide is arranged to receive light from a display system. An output port of the waveguide is formed by a first transmissive-reflective element of a first surface of the pair of opposing surfaces. The first transmissive-reflective element is such that the diffracted light field is divided at each internal reflection and a plurality of replicas of the diffracted light field are transmitted out of the waveguide through the output port. The input port comprises a second transmissive-reflection element arranged to receive at least a portion of the light from the display system.