Scalp Sensing Device with Blue-Cut Filter for UV Fluorescence Imaging
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Solution Overview
Problem
Conventional scalp measurement devices are large, cumbersome, and difficult to use, especially for non-specialists, as they require multiple sensors and manual mode changes for collecting data like moisture, temperature, and smell, and struggle to capture UV-induced fluorescence effectively due to insufficient light quantity and inconsistent measurements.
Innovation Solution
A portable, small-sized scalp sensing device with a camera module that includes a blue-cut filter, UV light source, and white light source, which alternately emit light to capture both scalp and UV-induced fluorescence images simultaneously using a single camera, along with integrated sensors for environment data like temperature, moisture, and VOC, facilitating easy operation and consistent data collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a conventional scalp measurement device uses multiple sensors and manual mode changes to collect data, then measurement comprehensiveness is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent combines multiple sensors (camera module with UV and white light sources, temperature sensor, humidity sensor, and smell sensor) into a single integrated scalp sensing device. This merging allows comprehensive data collection from one device rather than requiring multiple separate sensors, thereby improving measurement comprehensiveness while managing device complexity through unified design.
Solution Approach 2:
The scalp sensing device is designed with multi-functionality to perform various measurements including visual imaging, temperature detection, humidity detection, and smell analysis. This universal design enables the single device to replace multiple specialized sensors, improving measurement comprehensiveness without proportionally increasing device complexity.
2Measurement precision
If a conventional device uses blackout curtain for UV fluorescence excitation imaging, then measurement precision is improved, but device complexity and portability deteriorate
Solution Approach 1:
The patent extracts and eliminates the blackout curtain component from the conventional UV fluorescence imaging system. Instead of using a physical blackout curtain that increases device complexity and reduces portability, the invention achieves the necessary light isolation through the camera module's optical design and filtering mechanisms, thereby maintaining measurement precision while simplifying the device structure.
Solution Approach 2:
The patent introduces a blue-cut filter as an intermediary element between the UV light source and the camera sensor. This filter selectively blocks blue light while allowing UV-induced fluorescence to pass through, achieving precise fluorescence measurement without requiring a blackout curtain. The filter acts as a mediator that solves the light isolation problem while maintaining device portability.
3Illumination intensity
If blue light wavelength enters camera in large amounts during UV fluorescence imaging, then light quantity is improved, but measurement precision deteriorates
Solution Approach 1:
The patent uses a blue-cut filter as an intermediary component that selectively transmits UV-induced fluorescence wavelengths while blocking blue light wavelengths (360-440 nm). This filter acts as a spectral mediator, allowing the camera to receive sufficient light quantity from fluorescence emission while preventing overwhelming blue light from the UV source from entering the sensor, thereby maintaining both illumination intensity and measurement precision.
Solution Approach 2:
The patent applies local quality by making the optical path properties position-dependent. The blue-cut filter is strategically placed in the optical path between the UV light source and the camera sensor, creating a localized spectral filtering zone. This allows different parts of the optical system to have different spectral transmission characteristics, enabling the camera to receive appropriate wavelengths while blocking harmful blue light.
4Loss of information
If multiple sensors are used to measure scalp factors, then measurement comprehensiveness is improved, but ease of operation and data consistency deteriorate
Solution Approach 1:
The patent merges multiple measurement functions (imaging, temperature sensing, humidity sensing, and smell detection) into a single integrated scalp sensing device with a unified user interface. This allows non-specialist users to operate one device to collect comprehensive scalp data without needing to manually switch between multiple separate sensors or modes, thereby improving ease of operation while maintaining measurement comprehensiveness.
Solution Approach 2:
The scalp sensing device is designed as a universal multi-functional tool that can measure various scalp parameters (visual appearance, temperature, humidity, and smell) simultaneously or sequentially through automated operation. This multi-functionality eliminates the need for users to manually configure different sensors for different measurements, improving ease of operation while ensuring comprehensive data collection for accurate scalp health assessment.
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 device enables efficient, simultaneous capture of high-quality scalp and UV-induced fluorescence images, along with environmental data, in a compact and user-friendly manner, improving early diagnosis and monitoring of scalp conditions like alopecia.
Implementation Method 1
a blue-cut filter disposed between the camera part and the light diffusion member to block light of a predetermined wavelength that is incident on the camera part
Implementation Method 2
a UV light source, and a white light source. The light diffusion member may diffuse and guide light emitted from each of the white light source and the UV light source to direct the light onto a measurement target region
Implementation Method 3
The camera part may capture images of the measurement target region illuminated by the emitted light
Implementation Method 4
UV-induced fluorescence is a phenomenon in which, when a target site of the skin or scalp is irradiated with UV light, a change in an energy level occurs in vivo in terms of sebum, dead follicles, inflammation, or the like, and visible light is emitted
Data Source
AI summary
Provided is a portable scalp sensing device including a camera module, wherein the camera module includes a camera part including an image sensor and a lens, a light diffusion member disposed on an optical axis of the camera part, a blue-cut filter disposed between the camera part and the light diffusion member to block light of a predetermined wavelength that is incident on the camera part, a UV light source, and a white light source, the light diffusion member may guide light diffused from each of the white light source and the UV light source to illuminate a measurement target region with the light, and the camera part may obtain an image of the measurement target region illuminated by the light.