UV Blocking Material Detection via Spectral Signal Change Ratio
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Solution Overview
Problem
Current methods for analyzing the uniform application of ultraviolet (UV) blocking materials on the skin, such as reflection spectrum analysis using UV light sources, pose risks to the skin and are impractical due to the need for direct UV exposure or the use of color-reacting materials.
Innovation Solution
An apparatus and mobile device equipped with a light receiver, spectrum signal generator, and processor that select reference wavelengths between 290 nm and 400 nm to detect UV blocking materials based on the change ratio of spectrum signals, using a spectral filter to transmit light across a range of 100 nm to 840 nm, and generate hyperspectral images for accurate detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UV light source is used to irradiate skin for reflection spectrum analysis, then UV blocking material detection is enabled, but skin harm occurs due to direct UV exposure
Solution Approach 1:
The patent introduces a color-reacting material as an intermediary substance that reacts with UV blocking materials to produce color changes. This mediator enables indirect detection of UV blocking materials through visible color reactions rather than direct UV exposure, thus maintaining measurement precision while eliminating skin harm from UV irradiation
Solution Approach 2:
The patent replaces the UV light source-based optical detection system with a chemical reaction-based detection system. Instead of using electromagnetic radiation (UV light) to detect UV blocking materials, the system uses chemical reactions between color-reacting materials and UV blocking agents, substituting a mechanical/chemical approach for an electromagnetic radiation approach to eliminate harmful effects
2Measurement precision
If color-reacting material is added to UV rays for spectrum analysis, then detection method is developed, but practicality is reduced due to complexity
Solution Approach 1:
The patent combines the color-reacting material application process with existing skincare routines by integrating it into sunscreen products or separate application steps that users already perform. This merging approach maintains measurement precision through chemical reaction-based detection while improving practicality by eliminating the need for separate, complex detection procedures and UV light sources
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 non-invasive and practical detection of UV blocking materials by analyzing the change ratio of spectrum signals, effectively determining the presence and concentration of UV blocking agents without direct UV exposure, improving safety and accuracy.
Implementation Method 1
a spectral filter configured to transmit therethrough light with a wavelength selected from a range from about 100 nm to about 840 nm
Implementation Method 2
a light receiver configured to acquire detection light from a target object
Implementation Method 3
a spectrum signal generator configured to generate spectrum signals based on the detection light
Data Source
AI summary
An apparatus for detecting an ultraviolet blocking material includes a light receiver configured to acquire detection light from a target object; a spectrum signal generator configured to generate spectrum signals based on the detection light; and a processor configured to: select a reference wavelength from a range from about 290 nm to about 400 nm, and detect an ultraviolet blocking material based on a first spectrum signal of a first wavelength less than the reference wavelength and a second spectrum signal of a second wavelength greater than the reference wavelength, the first spectrum signal and the second spectrum signal being generated by the spectrum signal generator.