Direct-reading color-difference meter based on cube-root color coordinates

Area of Science:

• Color science
• Instrumental analysis
• Photovoltaic technology

Background:

• Accurate color difference measurement is crucial in various industries.
• Existing methods can be time-consuming or require complex calibration.
• The cube-root system of color coordinates provides a standardized framework for color differences.

Purpose of the Study:

• To introduce a novel instrument for direct reading of color-difference coordinates.
• To utilize silicon photovoltaic cells and glass filters for efficient signal generation.
• To develop a rapid and precise method for color difference assessment.

Main Methods:

• The instrument employs silicon photovoltaic cells coupled with glass filters to generate signals proportional to tristimulus values.
• Tristimulus signals from reference and sample materials are processed through solid-state circuitry.
• The system converts these signals into direct color-difference coordinates.

Main Results:

• The instrument successfully reads color-difference coordinates directly.
• Measurements can be performed rapidly, with a color difference assessment taking approximately 15 seconds.
• The device demonstrates excellent precision and stability in its measurements.

Conclusions:

• The developed instrument offers a significant advancement in color measurement technology.
• Its design allows for quick, accurate, and reliable color-difference assessments.
• The instrument's solid-state circuitry and lack of mechanical adjustments contribute to its efficiency and stability.