Aerosol Device Colour Differentiation via Ambient Light Sensing

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Solution Overview

Problem

Existing aerosol-generating devices and systems lack a means to differentiate themselves from their surroundings and other devices, leading to confusion and increased likelihood of being forgotten or misplaced.

Innovation Solution

Incorporation of optical sensors and light-emitting elements that detect ambient light and emit light based on a calculated color distance to enhance contrast and provide customizable color differentiation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If colour is used to indicate different functional aspects of the device, then user guidance and ease of operation are improved, but the device structure becomes more complex due to multiple coloured components

Engineering Contradiction:
Improveuser guidanceVSAvoiddevice structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent applies color coding to different functional components of the aerosol-generating device. The mouthpiece assembly includes a first color (e.g., blue) indicating its function, while the cartridge assembly includes a second color (e.g., red) indicating its function. This visual differentiation guides users in correctly assembling and operating the device, improving ease of operation without requiring complex mechanical guidance systems.

Inventive Principle:
Principle #32Color changes

2Adaptability or versatility

If multiple assemblies are detachably connected to form a complete device, then adaptability and ease of cleaning are improved, but the device structure becomes more complex

Engineering Contradiction:
Improvedevice configurationVSAvoiddevice structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The aerosol-generating device is divided into multiple detachable assemblies including a mouthpiece assembly, cartridge assembly, and battery assembly. Each assembly can be separately removed, cleaned, or replaced. The mouthpiece assembly detaches from the cartridge assembly, and the battery assembly detaches from the cartridge assembly, allowing for modular configuration and easier maintenance while maintaining overall device functionality.

Inventive Principle:
Principle #1Segmentation

3Reliability

If a heating element is contained within a cartridge assembly, then manufacturing precision and reliability are improved, but the device structure becomes more complex

Engineering Contradiction:
Improveheating element containmentVSAvoiddevice structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The heating element is contained within a separate cartridge assembly that can be detached from the mouthpiece assembly. This segmentation isolates the heating element in its own protective housing with a sealed interface, improving reliability by preventing contamination and ensuring proper thermal contact, while the modular structure avoids integrating the heating element into the main device body.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4521973B1Colour differentiation for aerosol-generating devices and systems
Publication Date: 2026.04.29 PHILIP MORRIS PRODUCTS SA
  • EP4521973B1 patent drawingFigure 1
  • EP4521973B1 patent drawingFigure 2
  • EP4521973B1 patent drawingFigure 3

AI summary

An aerosol-generating device or system includes one or more optical sensors, one or more light-emitting elements, and a controller. The one or more optical sensors may detect a colour of ambient light and the one or more light-emitting elements may emit light. The controller may be configured to receive the signal indicative of the colour of ambient light from the one or more optical sensors, determine an ambient colour value, generate a plurality of generated colour values, determine a colour distance between the ambient light value and each of the plurality of generated colour values, select one of the plurality of generated colour values based on a plurality of colour distances, and cause the one or more light-emitting elements to emit light having a colour corresponding to the selected one of the plurality of generated colour values.