Imaging Device Fluorescent Spectral Analysis
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Solution Overview
Problem
Conventional imaging devices face challenges in achieving high-resolution relative spectral distribution of fluorescent light while maintaining a simple configuration, as they either require expensive hyperspectral cameras for high spatial and temporal resolution or complex configurations with color filters.
Innovation Solution
An imaging device with a lighting unit emitting excitation light of different spectral distributions, an RGB camera for capturing mixed fluorescent and reflected light images, and an arithmetic unit calculating the relative spectral distribution using stored spectral information, allowing for high-resolution fluorescent light imaging without scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a hyperspectral camera is used to achieve high spatial and temporal resolution, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent uses an RGB camera to capture images under multiple excitation light sources with different spectral distributions, then calculates the relative spectral distribution through arithmetic processing. This copying approach replaces the need for expensive hyperspectral cameras by using multiple standard RGB cameras and light sources to achieve the same spectral analysis function
Solution Approach 2:
The patent replaces the mechanical/optical scanning system of hyperspectral cameras with a computational approach. Instead of physically scanning wavelengths, the system uses multiple fixed-wavelength light sources and arithmetic calculations to derive spectral information, substituting mechanical complexity with computational simplicity
2Measurement precision
If conventional methods are used to separate fluorescent and reflected light, then device complexity increases, but measurement precision is maintained
Solution Approach 1:
The patent changes the parameter of excitation light wavelength by using multiple light sources with different spectral distributions. By capturing images under different excitation wavelengths and performing arithmetic operations, the system separates fluorescent light from reflected light without requiring complex optical filtering mechanisms
Solution Approach 2:
The patent introduces arithmetic processing as an intermediary between light capture and spectral analysis. The arithmetic unit processes images captured under different excitation conditions to calculate relative spectral distribution, serving as a computational mediator that separates fluorescent and reflected light components without physical separation mechanisms
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 high-resolution relative spectral distribution of fluorescent light with a simple and cost-effective configuration, separating fluorescent and reflected light images effectively.
Implementation Method 1
The lighting unit has a plurality of light sources that emits excitation light having relative spectral distributions different from each other. For each of the plurality of light sources, the imaging unit simultaneously captures an image of fluorescent light emitted from the subject by the excitation light
Data Source
AI summary
A lighting unit has a plurality of light sources that emits excitation light having relative spectral distributions different from each other. An imaging unit simultaneously captures an image of fluorescent light emitted from the subject by the excitation light and an image of reflected light obtained by reflecting the excitation light by the subject, to generate a captured image. The arithmetic unit calculates a relative spectral distribution of the fluorescent light emitted from the subject by using the information about the relative spectral distribution of the reflected light for each of the plurality of light sources stored in the memory and the captured image for each of the plurality of light sources generated by the imaging unit.