Bushnell night‑vision devices help you see in the dark by taking the tiny amount of light that’s already around—like moonlight or starlight—and brightening it so you can clearly see your surroundings.
Here’s what happens inside the device:
1. Light is collected
Even at night, there’s usually a little bit of natural light. The front lens gathers this light through the objective lens and brings it into the device.
2. The device boosts the light
Inside, a special component called an image intensifier takes that small amount of light and amplifies it—similar to turning up the brightness on a screen. A photocathode is "excited" by the light and converts the photon energy into electrons.
3. A glowing image appears
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.
In other words, the intensified light is converted into a clear, bright image that glows on a green display (that’s why most night‑vision images look green).
You then see this brightened image through the eyepiece.
In simple terms:
Night vision collects the light around you → boosts it → and gives you a bright, green‑tinted picture so you can see in the dark.