infrared image converter

infrared image converter

[¦in·frə¦red ′im·ij kən‚vərd·ər]
(electronics)
A device for converting an invisible infrared image into a visible image, consisting of an infrared-sensitive, semitransparent photocathode on one end of an evacuated envelope and a phosphor screen on the other, with an electrostatic lens system between the two. Also known as infrared image tube.