Eyeglass lens for an optical imaging element, and augmented reality glasses

US12228737B2 · kind B2 · utility

Assignee

• tooz technologies GmbH · DE

Inventors

• Joerg Puetz · Aalen, DE
• Momchil DAVIDKOV · Aalen, DE
• Ramona Ettig · Lauchheim, DE
• Georg Michels · Aalen, DE
• Kai Bartel · Lorch, DE
• Ersun Kartal · Aalen, DE

Key dates

• Filing date: Jun 8, 2023
• Grant date: Feb 18, 2025
• Expiry date: Jun 8, 2043

Classification

• Technology area (CPC G): Physics
• CPC primary: G02C2202/16
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An eyeglass lens for an optical imaging element for producing a virtual image of an initial image includes a main body and at least one complementary element mounted on the main body. The main body has a material with a first index of refraction n1. A viscous or solid intermediate layer is arranged between the complementary element and the main body at least in the region where the complementary element overlaps with a reflection section of the main body. The material of the viscous or solid intermediate layer has a second index of refraction n2 that satisfies the condition n2<n1 sin(θE). θE is an angle of incidence of the light beams of the imaging beam path proceeding from the incoupling section and incident on the reflection section, selected such that at least 50% of the light beams of the imaging beam path have an angle of incidence of θ>θE.