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. 17, 2026
Filed:
Jun. 30, 2020
Google Llc, Mountain View, CA (US);
Oscar Alberto Martinez, Mountain View, CA (US);
Yi Qin, Mountain View, CA (US);
GOOGLE LLC, Mountain View, CA (US);
Abstract
An optical device includes a freeform lightguide to direct light from a display to a region where a user's eye is expected to be positioned. The freeform lightguide includes a lightguide substrate with first and second opposing surfaces extending between a first end and a second end of the freeform lightguide, with at least the second surface being a freeform surface and being overlaid with a partial mirror layer. The first surface being overlaid with at least a quarter-wave plate layer and a polarization beam splitter layer. The freeform lightguide also includes an in-coupling interface proximate to the first end of the freeform lightguide to receive light from the display.