940nm IR Band Pass Filter for ToF

940nm IR Band Pass Filter for ToFThis 940 nm bandpass filter is specifically designed to align with the atmospheric 0.94 µm H₂O absorption band, which effectively minimizes solar background interference and enhances the signal-to-noise ratio (SNR) of outdoor 3D sensing applications when used in conjunction with 940 nm vertical-cavity surface-emitting lasers (VCSELs) in time-of-flight (ToF) depth cameras. Major industry vendors specifically design 940 nm VCSEL arrays for ToF and LiDAR systems to ensure reliable performance across a wide range of ambient lighting conditions. Camera manufacturers commonly provide 850/940 nm wavelength options, with the 940 nm variant being preferred for superior daylight performance. Silicon-based sensors maintain high responsivity up to approximately 1100 nm, typically peaking near 960 nm, thereby ensuring robust system performance at 940 nm. Similar to all thin-film interference filters, an increase in the angle of incidence (AOI) causes a blue shift i…

Cut Off Type Glass Selective Absorption Type Glass Band Pass Filter