Eyewear Lens Wireless Power for Hidden Eye-Tracking Components

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Solution Overview

Problem

The physical components of traditional eye-tracking systems in head-mounted displays, such as LEDs and cameras, require power transmission through visible traces on eyewear frames, which can distract and disturb the user.

Innovation Solution

Implementing wireless power transfer technology to power the LEDs in eye-tracking systems, using wireless power receivers positioned on the eyewear lenses that receive power from a wireless power transmitter, eliminating the need for visible power traces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If visible traces are used to transmit power to LEDs and cameras on eyewear frames, then electrical components can be powered, but user distraction and discomfort increase

Engineering Contradiction:
Improvepower transmission to electrical componentsVSAvoiduser distraction and discomfort
Core Design Contradiction:
Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the visible power transmission traces from the eyewear frame by implementing wireless power transfer technology. The wireless power receiver is positioned on the lens rather than using visible traces on the frame, thereby removing the distracting visual element while maintaining power transmission functionality to the LEDs and cameras.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical/electrical trace-based power transmission system with a wireless electromagnetic power transfer system. This substitution eliminates the need for physical traces on the eyewear frame, resolving the contradiction between powering components and avoiding user distraction.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Object-affected harmful factors

If wireless power receivers are positioned on lenses, then visible traces are eliminated, but lens complexity increases

Engineering Contradiction:
Improvevisibility of power transmission componentsVSAvoidlens structure complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent merges the wireless power receiver functionality with the existing lens structure. By integrating the receiver into the lens rather than adding separate visible components, the design achieves concealment of power transmission elements while managing the complexity through consolidation rather than addition.

Inventive Principle:
Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution provides a seamless and distraction-free user experience by concealing power transmission components, enhancing the functionality and comfort of augmented-reality glasses.

Implementation Method 1

at least one wireless power receiver disposed on the at least one optical element and configured to receive a wireless power transfer from a wireless power transmitter

Methodology Applied
Scientific EffectWireless power transfer: Electromagnetic Induction

Data Source

PatentUS20250208442A1Apparatus, system, and method for wirelessly powering electrical components on optical elements of eyewear frames
Publication Date: 2025.06.26 META PLATFORMS TECHNOLOGIES LLC
  • US20250208442A1 patent drawing
  • US20250208442A1 patent drawing
  • US20250208442A1 patent drawing

AI summary

An apparatus for wirelessly powering electrical components on optical elements of eyewear frames may include (1) an eyewear frame that supports at least one optical element, (2) at least one wireless power receiver disposed on the at least one optical element and configured to receive a wireless power transfer from a wireless power transmitter, and (3) at least one electrical component disposed on the at least one optical element and electrically coupled to the wireless power receiver, wherein the electrical component is powered by the wireless power transfer. Various other apparatuses, systems, and methods are also disclosed.