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A CRT in a TV is commonly called a picture tube. CRTs have also been used as memory devices, in which case the screen is not intended to be visible to an observer. The term cathode ray was used to describe electron beams when they were first discovered, before it was understood that what was emitted from the cathode was a beam of electrons.
Front View of 7JP4 Electrostatic Television Picture Tube. The 7JP4 is an early black and white or monochrome cathode-ray tube (also called picture tube and kinescope). It was a popular type used in late 1940s low cost and small table model televisions. The 7JP4 has a 7" diameter round screen which was often partially masked.
The Chromatron is a color television cathode ray tube design invented by Nobel prize-winner Ernest Lawrence and developed commercially by Paramount Pictures, Sony, Litton Industries and others. The Chromatron offered brighter images than conventional color television systems using a shadow mask, but a host of development problems kept it from ...
The Trinitron design incorporates two unique features: the single-gun three-cathode picture tube, and the vertically aligned aperture grille. The single gun consists of a long-necked tube with a single electrode [dubious – discuss] at its base, flaring out into a horizontally-aligned rectangular shape with three rectangular cathodes inside ...
Vidicon tube 2 ⁄ 3 inch (17 mm) in diameter A display of numerous video camera tubes from the 1930s and 1940s, photographed in 1954, with iconoscope inventor Vladimir K. Zworykin. Video camera tubes are devices based on the cathode-ray tube that were used in television cameras to capture television images, prior to the introduction of charge ...
DLP and LCD projector edge blend setups show a visible gray seam in the middle in dark scenes. Because of their 4:3 picture tubes, edge-blended CRTs use a larger surface area of the tubes when showing video in a cinemascope aspect ratio, which reduces uneven wear and yields higher total brightness. CRT projector stacking is also possible.
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The cathode ray tube was the workhorse of text and video display technology for several decades until being displaced by plasma, liquid crystal , and solid-state devices such as thin-film transistors (TFTs), LEDs and OLEDs.