Skin Measurement Device Using Light Interference

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Solution Overview

Problem

Existing skin treatment devices lack precision and accuracy due to subjective selection of treatment modes, leading to variable effects and potential side effects, as they do not account for individual skin characteristics effectively.

Innovation Solution

A skin measurement device that uses light interference phenomena to measure specific skin information such as light reflectance, attenuation rates, and epidermal thickness, transmitting this data to a skin treatment device for optimized treatment settings, allowing for personalized treatment protocols.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If skin treatment is performed using fixed modes based on doctor's subjective opinion, then device operation is simple, but treatment accuracy and precision deteriorate

Engineering Contradiction:
Improveskin treatment accuracyVSAvoidmeasurement system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system performs preliminary skin measurement and analysis before treatment to objectively determine skin type and characteristics. The measurement unit captures skin images and the analysis unit processes them to classify skin type, providing data-driven basis for treatment parameter selection rather than relying on doctor's subjective judgment.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system establishes a feedback loop where skin measurement results directly influence treatment parameter selection. The analysis unit classifies skin type based on measured data, and this classification feeds back to automatically select appropriate treatment modes and parameters, ensuring treatment accuracy matches individual skin characteristics.

Inventive Principle:
Principle #23Feedback

2Adaptability or versatility

If multiple treatment modes are provided for different skin types, then treatment adaptability improves, but device complexity increases

Engineering Contradiction:
Improvetreatment mode adaptabilityVSAvoidmode selection complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system dynamically adjusts treatment parameters based on real-time skin measurement results. Rather than requiring manual selection from fixed modes, the control unit automatically adapts treatment parameters according to the analyzed skin type and characteristics, making the device versatile while maintaining simple operation.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system performs self-adjustment of treatment parameters based on automated skin analysis. The measurement and analysis units work together to automatically determine optimal treatment settings without requiring doctor's subjective judgment or complex manual configuration, enabling the device to serve itself in parameter optimization.

Inventive Principle:
Principle #25Self-service

3Measurement precision

If skin measurement is performed using light interference phenomenon, then measurement precision improves, but device complexity increases

Engineering Contradiction:
Improveskin characteristic measurement precisionVSAvoidoptical measurement system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system replaces complex mechanical measurement methods with optical measurement based on light interference phenomenon. The measurement unit uses light interference to non-invasively and precisely measure skin characteristics such as thickness and texture, eliminating the need for contact式 mechanical measurement while achieving high precision.

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

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

Enables more accurate and personalized skin treatments by providing detailed skin characteristics to the treatment device, enhancing treatment precision and user convenience by ensuring optimal settings for each user's skin type.

Implementation Method 1

the sensing unit emits light to the specific skin, and senses the information related to the specific skin based on reflected light from the specific skin

Methodology Applied
Scientific EffectLight reflection: Reflection

Implementation Method 2

sense the information related to the specific skin using interference between light reflected from the specific skin and light reflected from the mirror

Methodology Applied
Scientific EffectLight interference: Interference

Data Source

PatentEP3272278B1Skin measurement device and control method therefor
Publication Date: 2021.07.28 LG ELECTRONICS INC
  • EP3272278B1 patent drawingFigure 1
  • EP3272278B1 patent drawingFigure 2A~2B
  • EP3272278B1 patent drawingFigure 3~4

AI summary

The present invention relates to a skin measurement device capable of measuring information related to the skin. The skin measurement device capable of transmitting and receiving data to and from a skin treatment device, according to one embodiment of the present invention, comprises: a sensing unit formed so as to sense information related to the skin; and a control unit for controlling the sensing unit such that the sensing unit senses information related to certain skin, on the basis of contact between the skin measurement device and the certain skin, wherein the sensing unit is formed so as to emit light on the certain skin and to sense the information related to the certain skin on the basis of light reflected from the certain skin.