Digital Eraser Brush for Precision Cosmetic Application
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Solution Overview
Problem
Current cosmetic application methods are imprecise, labor-intensive, expensive, and sometimes harmful, as they rely on manual application techniques that fail to provide a natural and effective modification of skin appearance, especially when trying to selectively apply small amounts of reflectance modifying agents (RMAs).
Innovation Solution
A digital eraser brush system that uses multiple LEDs and sensors to measure skin reflectance accurately, allowing for the precise and automated application of RMAs through spray technology, combining drop control and non-drop control deposition methods to selectively apply small amounts of cosmetic agents, thereby enhancing skin appearance without disturbing natural features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual application techniques are used to apply cosmetic agents, then ease of operation is maintained, but manufacturing precision and measurement precision deteriorate
Solution Approach 1:
The patent replaces manual mechanical application with an automated digital system that uses sensors to detect skin reflectance and digitally controls deposition elements to apply cosmetic agents with precise positioning, thereby improving application precision while maintaining ease of operation through automation
Solution Approach 2:
The system enables self-service operation where the device automatically detects skin characteristics and controls deposition without requiring manual skill or judgment, allowing any user to achieve precise cosmetic application through simple device operation
2Productivity
If traditional cosmetic application methods are used, then device complexity is minimized, but productivity and speed of application deteriorate
Solution Approach 1:
The device is divided into distinct functional modules including sensors for detecting skin reflectance, a processor for analyzing detected values, and deposition elements for applying cosmetic agents, allowing each component to perform its specific function efficiently and enabling rapid automated application
Solution Approach 2:
The system combines multiple functions into a single device that can detect skin characteristics, analyze reflectance values, control deposition timing and positioning, and apply cosmetic agents, thereby achieving high productivity through integrated multi-functional operation
3Quantity of substance
If large amounts of cosmetic agents are applied to cover skin imperfections, then visual attractiveness is improved, but loss of substance and natural appearance deteriorate
Solution Approach 1:
The system applies cosmetic agents selectively only to specific locations where skin imperfections are detected through reflectance measurement, rather than applying uniformly across the entire skin surface, thereby using minimal amounts of substance while maintaining natural appearance in unaffected areas
Solution Approach 2:
The device applies cosmetic agents in precisely controlled partial amounts only where needed based on detected skin characteristics, avoiding excessive application and preserving the natural appearance of skin while improving visual attractiveness in targeted areas
4Measurement precision
If manual application methods are used, then device complexity is reduced, but measurement precision and control accuracy deteriorate
Solution Approach 1:
The patent replaces manual visual assessment with electronic sensors that detect skin reflectance and a processor that analyzes detected values to determine cosmetic application parameters, achieving high measurement precision through automated electronic measurement and control systems
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 system enables rapid, accurate, and less expensive modification of skin appearance by applying small amounts of RMAs, preserving natural skin features and improving visual attractiveness through precise control of reflectance modifying agents, achieving significant visual enhancements with minimal cosmetic agent usage.
Implementation Method 1
multiple LEDs and sensors to measure skin reflectance accurately
Implementation Method 2
application of RMAs through spray technology
Implementation Method 3
combining drop control and non-drop control deposition methods
Data Source
AI summary
One or more reflectance modifying agent (RMA) such as a pigmented cosmetic agent is applied selectively and precisely with a controlled spray to human skin according to local skin reflectance or texture attributes. One embodiment uses digital control based on the analysis of camera images. Another embodiment, utilizes a calibrated scanning device comprising a plurality of LEDs and photo diode sensors to correct reflectance readings to compensate for device distance and orientation relative to the skin. Ranges of desired RMA application parameters of high luminance RMA, selectively applied to middle spatial frequency features, at low opacity or application density are each significantly different from conventional cosmetic practice. The ranges are complementary and the use of all three techniques in combination provides a surprisingly effective result which preserves natural beauty while applying a minimum amount of cosmetic agent.