Chromatic confocal measurement decoded using color recognition for high resolution, integration, and efficiency.

Area of Science:

• Optical Engineering
• Metrology
• Spectroscopy

Background:

• Conventional spectrometers often lack sufficient color resolution and are bulky.
• There is a need for compact, high-resolution measurement systems for online applications.

Purpose of the Study:

• To introduce a novel chromatic confocal measurement method for spectral signal color recognition.
• To enhance confocal measurement resolution and enable online detection.
• To provide a compact and efficient alternative to traditional spectrometers.

Main Methods:

• Utilized a chromatic confocal setup with a color detector.
• Employed quantization-based subdivision to improve color resolution.
• Developed a method to obtain one-point position data from single-point measurements.

Main Results:

• Achieved an axial resolution of 0.37 µm over a 2.05 mm measurement range.
• The system's size is approximately 1/200th of conventional spectrometers.
• Demonstrated high resolution, compact size, and rapid processing capabilities.

Conclusions:

• The proposed chromatic confocal method significantly improves spectral signal color recognition.
• Its compact size and efficiency make it suitable for online detection applications.
• This method holds substantial potential for advancements in optical precision measurement.