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:
Sep. 29, 2026
Filed:
Dec. 12, 2023
Remarkable As, Oslo, NO;
Thomas James Watson, Cambridge, GB;
Emma Rachel Lewis, Cambridge, GB;
Isobel Jane Ashbey, Cambridge, GB;
Hessel Vink, Oslo, NO;
reMarkable AS, Oslo, NO;
Abstract
Embodiments of the invention provide an ultra-thin frontlight comprising an optical coupling element that receives light from a light source and directs the received light into a lightguide which is thinner than the height of the light source. The height of the optical coupling element is approximately the same or greater than that of the light source and the optical coupling element is refractively index matched to the lightguide. The optical coupling element may be composed of the same material as the lightguide. The optical coupling element has several reflecting surfaces, which may be polished, metallized, or have dielectric mirror coatings.