Mobile Spectrum Imaging Device Using Linear Variable Filter
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Solution Overview
Problem
Existing spectral imaging systems require multiple light sources and filters for each bandwidth, leading to increased system volume and complexity.
Innovation Solution
A mobile-based spectral imaging device using an optical fiber to emit light, a linear filter for spectral division, and a controller to adjust the filter's position, allowing for continuous spectrum control without the need for multiple filters, and utilizing a smartphone as a control device for stability and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple light sources and filters are used for each bandwidth, then spectral imaging coverage is improved, but system volume and complexity increase
Solution Approach 1:
A single light source is designed to emit multiple wavelengths simultaneously, replacing the need for multiple separate light sources. This multi-functional light source covers various spectral bands (visible, NIR, SWIR) while maintaining a compact form factor, thus improving spectral imaging coverage without increasing system volume
Solution Approach 2:
Multiple spectral filtering functions are merged into a single linear variable filter (LVF) component. The LVF integrates the functionality of multiple discrete filters by providing continuous spectral filtering across different wavelengths through a single moving element, reducing the number of components and overall system volume while maintaining comprehensive spectral coverage
2Adaptability or versatility
If multiple light sources and filters are used for each bandwidth, then spectral imaging coverage is improved, but device complexity increases
Solution Approach 1:
The control device is designed with multi-functional capabilities, serving as both a light source controller and an image processor. It manages the single multi-wavelength light source and processes images from multiple spectral bands, reducing the number of separate control systems and simplifying the overall device architecture
Solution Approach 2:
The linear variable filter combines multiple spectral filtering functions into a single integrated component. By using one LVF that can filter across the entire spectral range of interest, the system eliminates the need for multiple discrete filters and their associated mounting mechanisms, thereby reducing device complexity
3Volume of stationary object
If a single light source emits multiple wavelengths, then system volume is reduced, but spectral decomposition performance may be compromised
Solution Approach 1:
The linear variable filter acts as an intermediary that separates the multi-wavelength light from the single light source into distinct spectral bands. By precisely controlling the position of the LVF, it selectively transmits specific wavelength ranges to the imaging sensor, enabling accurate spectral decomposition despite the use of a single light source
Solution Approach 2:
The system employs dynamic control of the linear variable filter position to achieve spectral decomposition. By moving the LVF to different positions, the system can selectively capture images at different wavelengths, maintaining high spectral decomposition performance while using a compact single light source configuration
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 solution simplifies the system structure, improves spectral decomposition performance, reduces system size, and enhances usability by stabilizing the control device and input, display, and light source.
Implementation Method 1
an optical fiber configured to emit, in a beam form, light collected from a light source
Implementation Method 2
a linear filter movably installed and configured to spectrally divide the light emitted from the optical fiber into a wavelength band
Data Source
AI summary
The present invention provides a mobile-based spectrum imaging device and a method for controlling the same. A mobile-based spectrum imaging device according to an embodiment of the present invention may comprise: an optical fiber for emitting, in a beam form, light which has been collected from a light source; a linear filter which is movably installed, divides the light emitted from the optical fiber into particular wavelength bands, and makes the divided light have a wavelength band changing according to the incidence location of the light; and a control unit for controlling the location of the linear filter such that the location of incident light is changed on the linear filter.