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Photonics Dictionary

  • electron image tube

A cathode-ray tube that increases the brightness or size of an image or forms a visible image from invisible radiation. The focal plane for the optical image is a large, light-sensitive, cold cathode. The emission from the cathode is first accelerated through a suitable lens system and then strikes a fluorescent screen. There an image is formed that is an enlarged and brightened reproduction of the original image.
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