image intensifier

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image

 [im´ahj]
a picture or concept with more or less likeness to an objective reality.
body image see body image.
digital image a depiction recorded electronically to allow viewing or transmission on a computer.
image distributor beam splitter.
disturbed body image a nursing diagnosis defined as confusion in the mental picture of one's personal self. See also body image.
fluoroscopic image a visual depiction on a fluoroscopy screen.
image intensifier a fluoroscope that is electronically enhanced to produce a brighter image; see also automatic brightness control, brightness gain, and vignetting.
latent image the invisible change in radiographic film that is caused by x-radiation or light and is made visible by development of the film.
magnification image direct radiographic enlargement requiring a fractional focus tube of 0.3 mm or less.
manifest image the change on an x-ray film that becomes visible when the latent image undergoes appropriate chemical processing.
mirror image
1. the image of light made visible by the reflecting surface of the cornea and lens when illuminated through the slit lamp.
2. an image with right and left relations reversed, as in the reflection of an object in a mirror.
motor image the organized cerebral model of the possible movements of the body.
phantom image an artifact seen in conventional linear tomography.

im·age am·pli·fi·er

a device for converting a low light level fluoroscopic image to one that can be seen by the eye in a lighted environment; usually consists of an electronic light amplifier chained to a television tube.
Synonym(s): image intensifier

image intensifier

an electronic device used to produce a fluoroscopic image with a low-radiation exposure. A beam of x-rays passing through the patient is converted into a pattern of electrons in a vacuum tube. The electrons are accelerated and concentrated onto a small fluorescent screen, where they present a bright image, which is generally displayed on a video monitor.

image intensifier

A device used in radiology by means of which weak X-ray images obtained by low dosage radiation may be converted into television images and improved in brightness and contrast by purely electronic means. This allows continuous X-ray sceening for various procedures, such as the insertion of arterial catheters, without exposing the patient to unacceptably large doses of radiation.
References in periodicals archive ?
Acknowledging the high failure rates of Generation 4 tubes, ITT Industries (which together with Litton Industries provides the bulk of image intensifier tubes and systems for night vision devices manufactured in the United States) chose to improve upon the existing Generation 3 technology and develop a "thin-filmed" image intensifier tube.
Two major developments were responsible for the development of third generation night vision devices in the early 1980s: the gallium arsenide (GaAs) photocathode and the ion-barrier film on the MCP.
The attractive pricing means I am frequently asked to recommend an affordable 1st Generation night vision device.
While your night vision device is pretty smart by cutting off when exposed to bright light, it's not fast enough when exposed to extreme bright light, such as the light emitted by tracers, lasers, and flares.
The eyecup is an absolute must have on the AN/PVS-14 and all other night vision devices (like the AN/PVS-7's).
Order the front bracket assembly for the universal night vision device mount with NSN 5340-01-505-5835.
Tenders are invited for night vision device sniper scope
Tender notice number : MPPD/TENDER NO -473 & Work No: Night Vision Device with Head Mount
Tenders are invited for purchase of pvs-31 white phosphor binocular night vision device & peq-15 ir illuminators/lasers.
Contract award notice: Supply of spare parts for m-953 and m-983 model night vision devices (italy-rome: Visors)
Our goal is to market the next generation in hunting and tactical weapons targeting systems and night vision devices to the consumer market at affordable prices.

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