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Photonics Dictionary

fiber optic window

The face of a cathode-ray tube (CRT) that has a fiber optic sheet attached to its surface. The sheet's fibers are at right angles to the face, allowing the transmittance of the fluorescent trace image directly to a light-sensitive recording material. The use of the fiber optic window results in a sharper photographic image of the CRT's display than that obtained by contact printing directly on the glass face.
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