Aligning Fluorescent Spectral Radiance Measurements
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Solution Overview
Problem
Conventional methods for measuring total spectral radiance factor (TSRF) of fluorescent samples using different instruments yield dramatically varying results due to differences in spectral power distribution of light sources, requiring complex algorithms and prior knowledge of measurements.
Innovation Solution
A method to align measurements of fluorescent spectral radiance factors between instruments by calibrating a test instrument using a reference instrument and a reference sample, allowing estimation of the spectral radiance factor of a test sample as measured by the reference instrument without knowledge of the bispectral luminescent radiance factor, using UV-included and UV-excluded configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional algorithms are used to compensate for instrument differences, then measurement consistency can be improved, but algorithmic complexity and requirement for prior knowledge increase
Solution Approach 1:
The patent introduces a reference fluorescent sample as an intermediary substance that enables alignment between instruments. By measuring the reference sample with both instruments and using its known properties, the system creates a bridge to translate measurements between different instrument coordinate systems without requiring complex algorithms or prior knowledge of sample-specific matrices.
Solution Approach 2:
The patent changes the measurement parameters by separating UV-included and UV-excluded configurations, allowing independent measurement of fluorescent and reflective components. This parameter separation enables simpler alignment algorithms by reducing the measurement space and eliminating the need for complex bispectral matrices.
2Adaptability or versatility
If different light sources with different spectral power distributions are used, then measurement flexibility is improved, but measurement consistency deteriorates
Solution Approach 1:
The patent implements feedback through the alignment process where measurements of the reference sample are used to calculate transformation matrices that adjust subsequent measurements. This feedback mechanism compensates for the effects of different light sources by continuously correcting measurements based on the reference sample's known properties.
Solution Approach 2:
The patent segments the spectral radiance measurement into fluorescent and reflective components by using UV-included and UV-excluded configurations. This segmentation allows each component to be measured and aligned independently, improving consistency while maintaining flexibility in light source selection.
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
This method enables consistent measurement alignment across different instruments, ensuring that the measurements of a test sample by one instrument emulate those of a reference instrument, thus standardizing TSRF measurements without requiring prior knowledge of sample-specific matrices.
Implementation Method 1
OBAs cause a 'whitening' effect that makes materials look less yellow by increasing the overall amount of blue light reflected
Implementation Method 2
φ(λ) is the ratio of fluorescent light and diffuse reflection of the illuminant light
Data Source
AI summary
Aligning measurements of fluorescent spectral radiance factors taken by a first instrument with measurements of fluorescent spectral radiance factors taken by a second instrument, without knowledge of the matrix of bispectral luminescent radiance factor of any sample, includes obtaining a fluorescent spectral radiance factor of a reference sample, measured by the first instrument, obtaining the fluorescent spectral radiance factor of the reference sample, measured by the second instrument, obtaining a fluorescent spectral radiance factor of a test sample, measured by the first instrument, and estimating the fluorescent spectral radiance factor of the test sample that would be measured by the second instrument, based on the fluorescent spectral radiance factor of a reference sample, measured by the first instrument, on the fluorescent spectral radiance factor of the reference sample, measured by the second instrument, and on the fluorescent spectral radiance factor of the test sample, measured by the first instrument.