Image Intensifier

Read this tip to make your life smarter, better, faster and wiser. LifeTips is the place to go when you need to know about Night Vision Scope and other Hunting Scopes topics.

How does an image intensifier in a night scope work?

Image Intensifier

Could we cue the MIT professor again, please? Here's the explanation of how an image intensifier works:

• An image, ultraviolet, visible light, or near infrared, is projected onto the transparent window of a vacuum tube.

• The vacuum side of this window carries a sensitive layer called the photocathode. Light radiation causes the emission of electrons from the photocathode into the vacuum which are then accelerated by an applied DC voltage towards a luminescent screen (phosphor screen) situated opposite the photocathode.

• The screen's phosphor in turn converts high energy electrons back to light (photons), which corresponds to the distribution of the input image radiation but with a flux amplified many times.



Nobody has commented on this tip yet. Be the first.


URL: (optional)


Not finding the advice and tips you need on this Hunting Scopes Tip Site? Request a Tip Now!

Guru Spotlight
Sherril Steele-Carlin