Bushnell Night Vision 2.5 x 42

These optics turn night into day with built-in infrared illuminators and advanced light-gathering technology
How Does It Work?
Available light (energy) is collected by the objective lens and focused on the image intensifier.
Inside the intensifier a photocathode is "excited" by the light and converts the energy into electrons.
The electrons accelerate across an electrostatic field inside the intensifier and strike a phosphor screen (like a monochrome TV screen) which emits an image that you can see. This acceleration of electrons provides gain and enhances the image.

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