Electrochromic Smart Glasses Battery Control by Usage Pattern

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Solution Overview

Problem

Existing 'eco modes' in smart devices, such as electrochromic eyewear, degrade user experience by uniformly reducing CPU/GPU performance to save battery, which is inefficient for electrochromic features consuming most power.

Innovation Solution

A method for managing battery consumption in electrochromic eyewear by analyzing user usage patterns and adapting electrochromic cell parameters to optimize power usage based on individual user habits and needs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If existing eco modes are activated to save battery power, then battery consumption is reduced, but user experience is significantly degraded due to uniform reduction of CPU/GPU performance and electrochromic features

Engineering Contradiction:
Improvebattery consumptionVSAvoiduser experience
Core Design Contradiction:
Use of energy by moving objectVSEase of operation

Solution Approach 1:

The patent applies local quality by selectively managing power consumption of specific electrochromic features (such as automatic tint adjustment, color changing, and transition speed) rather than uniformly degrading all device functionalities. The system identifies and optimizes power consumption at the feature level, allowing users to maintain acceptable performance of critical functions while reducing power usage of less essential electrochromic features.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system dynamically adjusts electrochromic feature parameters based on real-time battery state and usage patterns. Instead of static eco mode settings, the system continuously monitors battery charge levels, usage frequency, and user preferences to adaptively control feature activation and performance, enabling flexible power management that responds to changing conditions.

Inventive Principle:
Principle #15Dynamics

2Use of energy by moving object

If generic eco modes are applied to all smart devices, then battery power is saved, but the solution is inefficient for electrochromic eyewear where electrochromic features consume approximately 90% of total power

Engineering Contradiction:
Improvebattery powerVSAvoidpower saving efficiency
Core Design Contradiction:
Use of energy by moving objectVSProductivity

Solution Approach 1:

The patent segments the power management approach by specifically targeting electrochromic feature power consumption rather than applying generic device-wide eco modes. The system divides power management into distinct controllable features (automatic tint adjustment, manual color changing, transition speed control) and optimizes each independently, recognizing that electrochromic features consume approximately 90% of total power in EC eyewear devices.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system changes operational parameters of electrochromic features based on battery state and usage analysis. This includes adjusting transition speeds, limiting color palette options, reducing frequency of automatic adjustments, and modifying activation thresholds for electrochromic functions, thereby directly addressing the primary power consumption source in EC eyewear.

Inventive Principle:
Principle #35Parameter changes

3Use of energy by moving object

If existing eco modes are used, then battery saving is achieved in emergency situations, but the generic degradation approach is not suitable for long-term optimized efficiency

Engineering Contradiction:
Improvebattery savingVSAvoidbattery autonomy
Core Design Contradiction:
Use of energy by moving objectVSDuration of action of moving object

Solution Approach 1:

The system implements feedback mechanisms by continuously monitoring battery charge levels, usage patterns, and feature performance. This feedback loop enables the system to learn from user behavior and adjust electrochromic feature management strategies over time, optimizing battery autonomy for long-term use rather than just providing emergency battery saving measures.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs preliminary analysis of usage patterns and user preferences to proactively configure optimal power management strategies before battery depletion occurs. By pre-configuring feature settings based on learned usage patterns, the system prepares efficient power consumption profiles that extend battery autonomy without requiring users to reactively activate emergency eco modes.

Inventive Principle:
Principle #10Preliminary action

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

Customizes battery management to minimize impact on user experience while extending battery life by adjusting electrochromic features according to user behavior, avoiding the limitations of generic 'eco modes'.

Implementation Method 1

electrochromic (or EC) eyewear devices (or eye glasses), functionalities related to the use of electrochromic cells - such as the automatic change of cell tint, filter or color (more generally, the automatic change of the state of tint)

Methodology Applied
Scientific EffectElectrochromism: Electrochromism

Data Source

PatentEP4449192B1Battery usage optimization for smart glasses
Publication Date: 2025.11.05 ESSILOR INTERNATIONAL(COMPAGNIE GENERALE D OPTIQUE)
  • EP4449192B1 patent drawingFigure 1
  • EP4449192B1 patent drawingFigure 2
  • EP4449192B1 patent drawingFigure 3

AI summary

A method performed by a battery-powered electronic eyewear device for managing a battery consumption of said eyewear device based on a utilization of said eyewear device by a user, the eyewear device comprising at least one electrochromic cell, the method comprising : recording data related to the utilization of the eyewear device by the user, said utilization being based on at least the use of at least one electrochromic cell feature of the eyewear device by the user driven by electrochromic cell parameters, analyzing said recorded data and determining at least one average usage pattern of the eyewear device by the user, comprising average repartitions of ideal values of said electrochromic cell parameters in the average usage pattern and/or of power consumption of the eyewear device by the user in the average usage pattern, adapting the management of the battery consumption of the eyewear device by piloting values of the electrochromic cell parameters based on at least the average usage pattern of the user and on charging data related to a remaining state of charge of the battery.