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What is the function of the fog shadow gloss meter?
Date: 2025-10-25Read: 0
The fog shadow gloss analyzer is a precision instrument specifically used to evaluate the optical properties of material surfaces. The following is a detailed introduction to its function:
1. Measure glossiness
Multi angle adaptation to different samples: capable of measuring at different incident angles such as 20 °, 60 °, 85 °, covering various surfaces from low gloss to high gloss. For example, 85 ° is suitable for matte materials, 60 ° for medium gloss areas, and 20 ° for highly reflective samples such as metallic colors. This flexibility makes it widely applicable for quality control in various industries such as coatings, plastics, and metals.
Quantitative reflection characteristics: By accurately measuring the proportion of reflected light on the surface of an object (in GU), it helps to determine the smoothness of the material and the processing effect, providing data support for optimizing the appearance of the product.
2. Fog Shadow Gloss Meter detects fog shadow values
Capture surface diffuse reflection phenomenon: The so-called "fog shadow" refers to the scattering effect caused by microscopic irregularities on the surface, manifested as a visual opacities or blurred images. This instrument can quantitatively analyze this parameter (unit HU), which is particularly important for high gloss paint films - when there are fine textures or impurities in the coating, even if the glossiness meets the standard, it may still affect the appearance due to excessively high haze values.
Guidance on process improvement: In paint production, manufacturers can control the haze below 20 to ensure the transparency of light colored paint films; If it exceeds the standard range, it will prompt the need to adjust the formula or improve the spraying environment.
3. Evaluate Freshness of Image (DOI)
Reflecting imaging clarity: The clarity index measures the ability of an object's surface to present a clear reflection, with values closer to 100 indicating less distortion in the reflected image. This is particularly crucial for products that focus on visual effects, such as car panels and home appliance casings. Low DOI means there are issues such as orange peel patterns and brush marks.
Related production process defects, such as poor coating fluidity and improper curing conditions, can lead to abnormal surface structure, thereby reducing the clarity score and prompting producers to promptly investigate the root cause of the problem.
4. Analysis of peak reflectivity using fog shadow gloss analyzer
Sensitive to subtle texture changes: detecting light intensity distribution within a very narrow angle range, which can be used to distinguish the smoothness differences of metal parts or coating surfaces with different polishing levels. This feature is of great significance for quality control in the field of precision manufacturing, such as optical lenses.
Auxiliary material selection: By comparing sample data made from different raw materials, the R&D team can select the optimal formula to meet specific optical performance requirements.
5. Support Total Quality Management
Data statistics and traceability: Built in large capacity memory records each measurement result and can be transmitted to a computer via USB/Bluetooth to generate a report. The statistical mode includes parameter calculations such as mean and standard deviation, which facilitate monitoring the consistency of batch products.
Standardization compliance verification: The operation process that complies with international standards such as ISO and ASTM ensures global recognition of test results, helping enterprises pass quality management system certification.
6. Optimization design and research and development of fog shadow gloss analyzer
Guiding the development of new materials: Designers can use objective data provided by instruments to accurately control the surface properties of composite materials, achieving innovative solutions that are both aesthetically pleasing and practical.
Accelerate the experimental process: The rapid measurement function allows for the completion of a large number of sample tests in a short period of time, shortening the product development cycle.