Proper illumination is essential for machine vision systems to capture high-quality images for inspection and analysis. Achieving optimum image contrast and overcoming challenging inspection conditions require careful consideration of not only the geometry, pattern, structure, and intensity of the lighting but also the wavelength of the light and the use of optical filters. Machine vision engineers can address challenging imaging problems and develop more robust and reliable inspection systems with a solid understanding of wavelengths and filtering techniques.
Multidisciplinary applications, such as machine vision, spectroscopy, and imaging, require a comprehensive understanding of how different materials interact with light at various wavelengths. A material’s chemical composition and structure determine the characteristics of interactions such as reflection, absorption, transmission, and fluorescence.