1,Sensor size: 1/4" 2,Wavelength: 650mm 3,Focal length: 2.5mm 4,F/NO: 2.5 5,Bake focal length:3.35mm In order to have good cooperation ... quality photosensitive resistance,metal photosensitive resistance,photosensitive sensor,fresnel lens and optical coating lens......Our company continuosly endevaours to give best service ...