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Band Pass Filter

Bandpass Filter

Bandpass filters allow a specific wavelength range to pass, and attenuate wavelengths outside of that range. Foreal offers both ultra narrow (<2nm) and ultra broad (>50nm) bandpass filters.

Typical Spectrum:

 

 

Typical Specification:

     Dimension

     4mm ~ 80mm, round or square

     Center Wavelength (CWL)

     340nm ~ 1570nm

     Full Width at Half Maximum (FWHM)

     0.3% ~ 0.6% of CWL

     Transmission at CWL

     >70% (Or Custom Design)

     Cut-off Wavelength

     UV – NIR

     Blocking

      >OD4 or OD6

     Slope (T=1% to T=90%)

      80/50

 

Key Features:

•    High Transmission

•    Deep Blocking

•    Steep Slope

•    Stable Ripple at Band Pass

•    Excellent Environmental Stability


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