Violet Machine Vision Bandpass Filter

Violet machine vision bandpass filters are designed to transmit selected violet visible wavelengths (typically between 380nm and 450nm) while reducing ambient light interference. When paired with violet LED illumination, these filters maximize contrast and improve edge detection for automated sensor systems.

Applications:

• Automated optical inspection (AOI) for semiconductor and electronics manufacturing
• Fluorescence-based machine vision for detecting violet-reactive adhesives, coatings, and security inks
• Detector-side violet light isolation before monochrome CMOS/CCD imaging sensors
• Suppression of overhead factory lighting and stray ambient noise in industrial environments

Bandwidth options:

• 30nm FWHM for tight violet LED line isolation and maximum ambient light reduction
• 40nm to 50nm FWHM for balanced signal transmission, higher throughput in imaging, and accommodating LED wavelength shifts caused by temperature variations or viewing angles

Select the bandwidth based on the specific violet LED illumination source, detector sensitivity, and required ambient light rejection level.