940nm NBP940 IR Infrared Narrow Bandpass Filter - AliExpress
Amazon.com : Gzikai 10pcs/1 Lot 6mm×6mm×0.55mm 940nm IR Infrared Narrow Bandpass Filter Optical Glass FWHM NBF940 for Camera Lense and Face Recognition : Electronics
940nm Laser Infrared Optical Narrow Bandpass Filter - China Optical Narrow Band Filter, Optical Glass | Made-in-China.com
Optical Instruments Ir Filter 940nm Infrared Bandpass Filter - Buy Optical Instruments Ir Filter 940nm Infrared Bandpass Filter Product on Alibaba.com
940nm CWL, 12.5mm Dia., Hard Coated OD 4.0 10nm Bandpass Filter
Amazon.com: Quanmin 10pcs/1 Lot 6mm×6mm×0.55mm 940nm IR Infrared Narrow Bandpass Filter Optical Glass FWHM NBF940 for Camera Lense and Face Recognition : Electronics