`
`Page 1 of 1
`
`How does an image intensifier work?
`An
`Image
`Intensifier
`is a
`vacuum tube that amplifies a
`low
`light-level
`scene
`to
`observable levels. The object
`lens
`collects
`light
`and
`focuses it onto the Image
`Intensifier.
`At
`the
`photocathode of the Image
`Intensifier the incoming light
`is converted
`into photo-
`electrons.
`
`These photo-electrons are
`accelerated in an electric field
`and multiplied by a Micro
`Visualisation of image intensifier with Micro Channel Plate
`Channel Plate (MCP). An MCP
`is a very thin plate of conductive glass containing millions of small holes.
`
`An electron entering a channel strikes the wall and creates additional electrons, which in turn create more
`electrons (secondary electrons), again and again. Subsequently the highly intensified photo-electrons strike
`the phosphor screen and a bright image is emitted that you can see.
`
`PHOTONIS produces a variety of different Image Intensifiers suited for applications running from X-rays to
`the Near-Infrared wavelength band. The application determines which type of input window and
`photocathode should be used.
`
`More about the principles can be found at How Stuff Works.
`
`Image intensifier animation
`
`Laatste update op 18-02-2010 door Hub Goertz.
`
`Ga terug
`
`http://www.nightvision.nl/faq-reader/how-does-an-image-intensifier-work.html
`
`10/11/2015
`
`Magna 2006
`TRW v. Magna
`IPR2015-00436
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