Multipurpose light engine for augmented reality
WO2026124758A1PCT designated stage Publication Date: 2026-06-18TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
- Filing Date
- 2024-12-11
- Publication Date
- 2026-06-18
AI Technical Summary
⚠Technical Problem
Waveguide-based augmented reality displays face challenges with low efficiency, color uniformity issues, rainbow effects, and limited depth planes, hindering immersive and comfortable AR experiences.
⚗Method used
A multipurpose XR device with a temple structure that rotates relative to a viewing lens structure, allowing for both head-mounted display and projection modes, utilizing a light engine, collimation lens, beam shape lens, and waveguide couplers to align light paths for optimal viewing or projection.
🎯Benefits of technology
Enables high-brightness, versatile light projection for immersive AR experiences and sharing content with others, while maintaining compactness and efficient power usage.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure EP2024085710_18062026_PF_FP_ABST
Abstract
An extended reality, XR, device (300, 600) including a viewing lens structure (230a) comprising a beam shape lens (310), a waveguide in-coupler (314), an out-coupler (110), and a user viewing lens (208). The XR device (300, 600) further including a temple structure (220a) comprising a light engine (302), a collimation lens (306), and a projection lens (404), wherein the temple structure (220a) is connected to the viewing lens structure (230a) through a joint (222a) that allows the temple structure (220a) to rotate relative to the viewing lens structure (230a).
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