415 nm Narrow Bandpass Optical Filter

The 415 nm narrow bandpass filter is a high-performance bandpass filter designed for precise wavelength selection and spectral detection in the short-wavelength visible region. It primarily transmits the 410-420 nm band with an average transmittance Tavg > 90%, while providing deep blocking over a broad range from UV to near-infrared on both sides of the passband, effectively suppressing background light, stray light, and signals from other wavelengths. The filter has a FWHM of 15.3 nm and a guaranteed minimum bandwidth of 10 nm, enabling efficient selection of narrow-band optical signals around 415 nm. With a standard angle of incidence of 0°± 5°, it is suitable for fluorescence detection, spectroscopy, machine vision, optical imaging, and precision optoelectronic detection systems.