Bandpass filters for PCB Coating Inspection
Bandpass filters for printed circuit board (PCB) coating inspection are designed to maximize contrast for specific feature detection during automated optical inspection (AOI). When inspecting conformal coatings, these filters isolate the distinct fluorescence emission of tracer dyes excited by ultraviolet (UV) light, reducing unwanted background reflection and out-of-band noise from the bare board and solder joints.
Applications:
- Automated optical inspection (AOI) systems for verifying conformal coating coverage and detecting voids
- Fluorescence imaging setups for isolating targeted visible emission wavelengths from the primary UV excitation source
- PCB manufacturing quality control for enhancing the optical contrast of specific board features against the substrate
