Multi-angle Colorimeter Symmetric Optical Axis Correction
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Solution Overview
Problem
Existing multi-angle colorimeters face challenges in obtaining accurate colorimetric results due to the influence of hand-shaking and axis inclination during spectroscopic measurements, particularly when dealing with samples like automobile body coatings with curved surfaces.
Innovation Solution
A multi-angle colorimeter design featuring a light illuminating and receiving optical system with symmetrically arranged radiating and receiving positions, performing two measurement operations under different geometric conditions to correct for axis inclination and hand-shaking effects by averaging the results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If spectroscopic measurement is performed twice using symmetrically arranged optical systems to suppress axis inclination influence, then measurement accuracy is improved, but measurement time increases
Solution Approach 1:
The patent combines multiple light receiving positions into a single integrated detection system that can simultaneously capture reflected light from multiple angles. The light receiving unit includes multiple photodetectors arranged to receive light at different angles, allowing simultaneous measurement rather than sequential measurements, thus reducing measurement time while maintaining accuracy through multi-angle data collection.
Solution Approach 2:
The patent segments the light receiving function into multiple independent photodetectors, each positioned at different angles. This segmentation allows parallel measurement of reflected light intensity at multiple angles simultaneously, eliminating the need for sequential measurements and reducing the time penalty associated with repeated measurements for accuracy.
2Measurement precision
If spectroscopic measurement is performed twice to correct for axis inclination, then colorimetric accuracy is improved, but the device becomes more complex
Solution Approach 1:
The patent designs a light receiving unit that serves multiple functions simultaneously: it detects reflected light intensity at multiple angles, determines the normal line direction of the measurement target, and corrects for axis inclination all through a single integrated structure. This multi-functionality eliminates the need for separate correction mechanisms and reduces overall device complexity.
Solution Approach 2:
The patent transitions from sequential two-dimensional measurement (performing measurements twice in sequence) to simultaneous three-dimensional measurement by adding the angular dimension. Multiple photodetectors are positioned at different angles around the measurement axis, enabling simultaneous capture of spatial information from multiple directions, which simplifies the system architecture compared to repeated sequential measurements.
3Reliability
If multiple measurement operations are performed under different geometric conditions, then influence of hand-shaking is suppressed, but measurement time increases
Solution Approach 1:
The patent merges multiple measurement functions into a single simultaneous operation. The light receiving unit with multiple photodetectors captures reflected light from multiple angles at the same time, allowing the system to perform measurements under different geometric conditions simultaneously rather than sequentially, thus suppressing hand-shaking effects without increasing measurement time.
Solution Approach 2:
The patent maintains continuous measurement action by having multiple photodetectors continuously capture light intensity information from different angles simultaneously. This continuous parallel data collection ensures that measurements are not interrupted or repeated, maintaining reliability while eliminating time loss associated with repeated measurements for stability.
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 approach effectively suppresses the impact of axis inclination and hand-shaking, ensuring accurate and reliable colorimetric results by averaging the intensity of reflected light across multiple positions.
Implementation Method 1
radiates illumination light from each of the plurality of light radiating positions to the measurement target position and receives reflected light traveling from the measurement target position toward each of the plurality of light receiving positions
Data Source
AI summary
First and second measurement operations are performed according to each of a plurality of geometric conditions while keeping the geometric condition. In the first measurement operation, illumination light is radiated from a first light radiating position toward a measurement target position and spectroscopic measurement is performed on reflected light traveling from the measurement target position toward a first light receiving position. In the second measurement operation, illumination light is radiated from a second light radiating position toward a measurement target position and spectroscopic measurement is performed on reflected light traveling from the measurement target position toward a second light receiving position. The two spectroscopic measurement results are averaged. The second light radiating position and the second light receiving position are respectively disposed symmetrical to the first light radiating position and the first light receiving position with respect to a reference axis.