Spectacle lens for a display device that can be fitted on the head of a user and generates an image and display device with such a spectacle lens

US10831031B2 · kind B2 · utility

Assignee

• tooz technologies GmbH · DE

Inventors

• Guenter Rudolph · Jena, DE
• Hans-Juergen Dobschal · Kleinromstedt, DE

Key dates

• Filing date: Dec 12, 2016
• Grant date: Nov 10, 2020
• Expiry date: Aug 15, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B2027/0178
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A spectacle lens for a display device that can be fitted on the head of a user and generates an image, wherein the spectacle lens comprises a front side and a rear side, a coupling-in section and a coupling-out section spaced apart from the coupling-in section, which comprises several reflective deflecting surfaces arranged next to each other, which together form a reflective Fresnel surface, as well as a light-guiding channel which is suitable for guiding light bundles of pixels of the generated image, which are coupled into the spectacle lens via the coupling-in section of the spectacle lens, in the spectacle lens to the coupling-out section, by which they are coupled out of the spectacle lens, and wherein the distance of the reflective deflecting surfaces from the front side increases and/or decreases as the distance from the coupling-in section increases.