TV Camera Tubes
For an excellent discussion of the difference between the first two television camera tubes, the iconoscope and the image dissector, please see this article by James O'Neal
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1846 Iconoscope (1941) |
1846 Iconoscope with monosocope pattern (1942)
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1847 Amateur Iconoscope (1940) |
1850 Iconoscope (1939) |
German "Super Iconoscope" (1936)
(Courtesy of
Jochen Gittel)
This camera tube was used to televise the 1936 Berlin Olympic Games. It was developed by Dr. Heimann of the Post Office Ministry in Berlin. The cathode had a life of only a few hours. Every night after use, the electron gun (in diagonal tube) was removed and a new one inserted. The tube was then evacuated for use the next day.
Safar Telepantoscope (1938)
(Courtesy of Giacomo Pruzzo and Gino Brizioli)
Philco 1937 Iconoscope
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Farnsworth Image Dissector (early 40s)
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Diamond Power Image Dissector (1949-73)
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RCA 5820 Image Orthicon (late 40s)
Vidicon (mid 50s)
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Monoscope tube made by American Television Institute students (late 30s - early 40s). Usually there is a pattern of some sort on the target (right). This tube has a slotted disk instead. Click for a schematic diagram of the transmitter and receiver used with this tube.
RCA 1698 "Pattern" Monoscope (1939). This tube has numbers and geometric shapes in it.
RCA 1699 Monoscope (1939). This tube was custom made with the TV station's test pattern and call letters in it.