How do Night Vision Goggles, Binoculars, and Monoculars work?
A. Bushnell Night Vision products collect and amplify existing light through the objective lens which is then focused on the image intensifier. Inside the intensifier, a photocathode is “excited” by the light and converts the photon energy in to electrons. These electrons accelerate across an electrostatic field inside the intensifier and strike a phosphor screen (like a green monochrome TV screen) which emits an image that you can see. It is the acceleration of electrons, which provides gain and enhances the image. Q. Aren’t all Night Vision products the same? A. No. Only Bushnell Night Vision comes from a proven Leader and Innovator in the Sports Optics Industry. Q. What is the effective range of night vision? A. It varies anywhere from 1-1800 feet. The maximum viewing distance depends on the conditions of use and upon model chosen. Overcast conditions, fog, rain; etc. may reduce the effective distance of a night vision. An Infrared Illuminator will increase viewing range, especially
