4x50 Night Vision Binoculars Telescope with Infrared Illuminator Images and Video
Item | YNV4X50HD |
Optical Performance | Magnification power: 4 X 50 (optical lens: 4x, objective aperture: 50mm) |
Eyepiece Exit Pupil Diameter: 12mm | |
Angle Of View: 7° | |
Objective Aperture :50mm | |
Eyepiece Focal Length: 12.3mm | |
F# for Objective lens: 1.3 | |
2m~∞ in daytime; Viewing in the darkness up to 400M (monochrome) | |
Eyepiece Exit Pupil Distance: 8mm | |
Infrared IR illuminator: 850mm | |
Lens Coating: Fully Multi-Coated 7-piece optical fully-plated infrared anti-reflection film glass lens | |
Objective Focal Length 37.5mm |