Multi-wavelength imaging solution for detecting subtle color differences and foreign objects
Multi-Band Light
Using multiple wavelengths makes it possible to identify objects that are difficult to identify with a single wavelength.
We’ll solve these challenges!
- Identifying subtle differences in color and material
- Detecting foreign objects with similar colors
- Unable to distinguish features using conventional lighting
Multi-Band Light
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- Using multiple wavelengths makes it possible to identify objects that are difficult to identify with a single wavelength.
- By using sequential LED light with different wavelengths for imaging, it is possible to acquire an image for each wavelength.
- Classification is possible by acquiring multiple images with different illumination wavelengths and performing image processing based on the difference in features.
Imaging Solution with 8 Types of Wavelength
Imaging Examples: Visible Light
Resin Color Plate
Workpiece
Sample Output Images
405 nm
450 nm
520 nm
590 nm
620 nm
690 nm
850 nm
940 nm
Classification is possible by acquiring multiple images with eight different illumination wavelengths from 405 to 940 nm and performing image processing based on the difference in features.
Imaging Examples: Infrared Light
Foreign Objects in Coffee Powder (Cookie, Paper, Film)
Workpiece
Sample Output Images
[Red] Paper
[Green] Cookie
[Yellow] Film
850 nm
940 nm
1050 nm
1200 nm
1300 nm
1450 nm
1550 nm
1650 nm
Images acquired at eight illumination wavelengths from 850 to 1650 nm are processed based on the feature differences between coffee grounds and foreign objects, enabling reliable inspection.
Example System Configuration
