Description
Band-Pass Filters – Narrowband Wavelength Selection for Precision Sensing Detailed
Description:
Band-Pass Filters transmit a narrow, specific wavelength band while blocking all shorter and longer wavelengths. They are manufactured using multi-layer dielectric interference coatings to achieve precise center wavelength (CWL) and narrow full-width at half-maximum (FWHM). These filters are critical for applications requiring high spectral selectivity and noise reduction.
Key Specifications:
Materials: BK7, Fused Silica, Optical Glass
Center Wavelength (CWL): Customizable (200nm – 10µm)
Bandwidth (FWHM): 1nm – 100nm (narrowband to broadband options)
Passband Transmittance: >80% (typical)
Stopband Optical Density: OD 4 – OD 6
Size: 5mm × 5mm – 150mm × 150mm
Surface Quality: 40/20, 20/10
Coating: Hard dielectric coating (high durability, low scatter)
Applications:
Fluorescence microscopy, LiDAR systems, gas analysis, environmental monitoring, medical diagnostics, laser spectroscopy.
