Bandpass Filters for Wavelength Separation

Bandpass filters for wavelength separation are designed to transmit selected wavelength bands while reducing unwanted out-of-band light to enhance contrast and improve feature detection in machine vision systems.

Applications:

• Wavelength separation and spectral isolation in machine vision and automated optical inspection (AOI) systems
• Contrast enhancement for material sorting, part measurement, and defect detection
• Detector-side signal isolation before industrial CMOS/CCD cameras
• Elimination of ambient lighting interference and optical noise in imaging setups
• Multispectral imaging systems requiring specific spectral component isolation

Bandwidth options:

• 10nm FWHM for tight target signal isolation and maximum ambient background noise reduction
• 20nm and 30nm FWHM for balanced signal transmission, noise reduction, and accommodating LED wavelength shifts over temperature

Select the bandwidth based on the illumination source spectrum, target signal, detector sensitivity, blocking range, and required signal level.