BP940-10 대역 통과 필터(CWL=940nm, FWHM=10nm)

"Solar-Blind" Outdoor Imaging & LIDAR

• Why: Sunlight contains significantly less intensity at 940 nm compared to 850 nm because atmospheric water vapor absorbs solar radiation at this specific wavelength.
• Application: This filter is ideal for outdoor active imaging (e.g., license plate recognition, autonomous vehicle LIDAR, face recognition sensors) because the "background noise" from the sun is lower, improving the signal-to-noise ratio.

Recommended Light Sources

• The recommended light sources for this application are High-Power 940 nm LEDs or VCSEL arrays, as they provide intense, narrowband illumination that perfectly matches the filter's passband. These sources maximize the signal-to-noise ratio by emitting specifically within the atmospheric absorption window where solar background noise is lowest.

Covert Surveillance & Night Vision

• Why: The human eye is completely blind to 940 nm. Unlike 850 nm LEDs, which often have a faint "red glow" visible to the naked eye, 940 nm sources are totally invisible.
• Application: Security cameras in sensitive areas (banks, wildlife monitoring) where you do not want the camera's location revealed by a red light.

Recommended Light Sources

• The recommended light sources for covert surveillance are 940 nm LED illuminators, as they emit infrared light that is completely invisible to the human eye, eliminating the tell-tale "red glow" typical of standard 850 nm LEDs. This ensures discreet monitoring in sensitive environments like banks or wildlife habitats without revealing the camera's location.