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

US9995934B2 · kind B2 · utility

Assignee

• tooz technologies GmbH · DE

Inventors

• Hans-Juergen Dobschal · Kleinromstedt, DE
• Karsten Lindig · Erfurt, DE

Key dates

• Filing date: Sep 25, 2014
• Grant date: Jun 12, 2018
• Expiry date: Sep 25, 2034

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 generate an image guides 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 by reflections on the rear side and a reflecting surface lying opposite this to the coupling-out section and coupling them out of the spectacle lens via the coupling-out section. A splitter layer reflects a portion of light bundles reflected by the rear side towards the rear side and transmits a portion, wherein after reflection on the rear side the reflected portion strikes the splitter layer again and there, once again, is partially reflected towards the rear side and partially transmitted. The transmitted portions strike the facets are coupled out of the spectacle lens through the splitter layer and the rear side.