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. 02, 2024
Filed:
Nov. 28, 2022
Azumo, Inc., Chicago, IL (US);
Anthony Nichol, Minneapolis, MN (US);
Zane Coleman, Elmhurst, IL (US);
Azumo, Inc., Chicago, IL (US);
Abstract
A display comprises a film-based lightguide, a light source positioned to emit light into the lightguide, and a light turning film with light turning features comprising a first surface with a first coating of a first material with a first refractive index that redirects light extracted from lightguide toward a reflective spatial light modulator wherein the light turning features also comprise a second surface that does not comprise a coating of the first material or comprises a coating of a thickness of the first material less than 500 nanometers. The light turning film may comprise a base layer of a second material with a second refractive index, and the first refractive index is less than the second refractive index. The first surface may be an angled planar surface oriented at an angle the surface of the light turning film or comprise a curved surface.