Multi-angle Colorimeter for Metallic Coating Graininess
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Solution Overview
Problem
The evaluation of metallic/pearl color coatings requires separate devices for color and texture evaluation, leading to increased size and cost due to the use of different apparatuses for color evaluation and texture evaluation, specifically graininess assessment.
Innovation Solution
A multi-angle colorimeter that incorporates a light emitting unit, a light amount detection unit, and an index calculation unit to calculate an index corresponding to the particle diameter of the glittering material using optical parameters obtained from reflected light at multiple angles, allowing for both color and texture evaluation without the need for additional devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate devices are used for color evaluation and texture evaluation, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent combines color evaluation and texture evaluation functions into a single multi-angle colorimeter. The device integrates a light source, multiple light receiving units positioned at different angles, and a control unit that processes both colorimetric data and texture data, eliminating the need for separate evaluation devices while maintaining measurement precision through multi-angle light reception
Solution Approach 2:
The multi-angle colorimeter is designed to perform multiple functions: it measures colorimetric parameters (L*, a*, b* values) for color evaluation and simultaneously measures light reception amounts at multiple angles to calculate texture parameters (standard deviation and skewness) for graininess evaluation, making the device universal for both evaluation purposes
2Measurement precision
If separate devices are used for color evaluation and texture evaluation, then measurement precision is improved, but cost increases
Solution Approach 1:
The patent merges texture evaluation capability into the colorimeter by adding multiple light receiving units at different angles and implementing calculation units that process angular light reception data to derive texture parameters, thereby eliminating the need for separate texture evaluation equipment and reducing overall system cost
Solution Approach 2:
The colorimeter is enhanced to serve dual purposes: color measurement and texture measurement. By making the device universal, the patent eliminates redundant equipment purchases and reduces total evaluation system cost while maintaining precise texture evaluation through multi-angle photometric measurements
3Adaptability or versatility
If multiple light receiving units are added to detect reflected light at different angles, then texture evaluation capability is improved, but device complexity increases
Solution Approach 1:
The light receiving section is segmented into multiple independent light receiving units positioned at different angles relative to the light source. Each unit independently detects reflected light at its specific angle, and the control unit processes these segmented measurements to calculate texture parameters, enabling texture evaluation without requiring a completely different device structure
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 efficient and cost-effective evaluation of metallic and pearl coatings by performing color and texture assessments using a single device, specifically evaluating graininess through calculated indices, thus avoiding the need for separate equipment.
Implementation Method 1
a light amount detection unit that receives the light emitted from the light emitting unit and reflected by the object in a plurality of directions of angles, and detects a reflected light amount in each of the angle
Data Source
AI summary
A multi-angle colorimeter includes an index calculation unit that calculates, based on a predetermined calculation formula, an index corresponding to a particle diameter of a glittering material, which is used for metallic coating or pearl coating, using optical parameters used in color evaluation of the metallic coating or pearl coating on a surface of an object.