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Allen Balcom DuMont, also spelled Du Mont, (January 29, 1901 – November 14, 1965) was an American electronics engineer, scientist and inventor who improved the cathode-ray tube in 1931 for use in television receivers.
Dual-beam cathode ray oscilloscope type 322-A, Du Mont Laboratories, early 1950s [4] In 1938, DuMont Labs began manufacturing televisions at a factory in nearby Passaic, New Jersey. [3]: 191 To sell TVs, it began the DuMont Television Network in 1942, one of the earliest TV networks. Later, they manufactured cameras and transmitters for TV.
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.
Lafayette also offered TV vacuum tube testing, for customers who wanted to service their own televisions. Lafayette was quick to jump on industry trends, first by embracing open reel tape recorders, and later, 8-track cartridge recorders and compact cassette recorders, [ 6 ] along with an array of gimmicks, supplies, and accessories. [ 5 ]
In 1950, tables indicated General Electric production was large in the industry at 53.4% of the sales of domestic miniature incandescent lamps, whereas Tung-Sol was producing at 19.8% of sales. [90] During the 1950s, there were several locations listed where the products were manufactured in a company catalog. [91]
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 Aiken tube was the first successful flat panel black-and-white television. Originally designed in the early 1950s, a small number of tubes were built in 1958 for military use in a collaboration with Kaiser Industries. An extended patent battle followed with a similar technology developed in the United Kingdom, and planned commercial ...
The television is a Montgomery Ward Airline 84GSE3011A (made by Sentinel Radio and Television Corp.) From 1946 to 1951 the 7JP4 was a common CRT (picture tube, or kinescope) used in lower priced televisions sold in the United States. These television were popular for portable carry around and small table top sets.