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:
Feb. 04, 2025
Filed:
Jun. 29, 2023
Snap Inc., Santa Monica, CA (US);
Mohmed Salim Valera, Sutton Coldfield, GB;
Snap Inc., Santa Monica, CA (US);
Abstract
An augmented reality display is disclosed. A colour projectoremits an image in a narrow beam comprising three primary colours: red, green and blue. A pair of waveguidesis provided in the path of the projected beam. A first input gratingreceives light from the projectorand diffracts the received light so that diffracted wavelengths of the light in first and second primary colours are coupled into the first waveguide, and so that diffracted wavelengths of the light in second and third primary colours are coupled out of the first waveguide in a direction towards the second waveguide. A second input diffraction gratingreceives light coupled out of the first waveguideand diffracts the second and third primary colours so that they are coupled into the second waveguide