Transmissions using cameras based on the iconoscope began on January 15, 1936.
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One year later, at the Paris International Exposition, he introduced an iconoscope television unit that he had designed.
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The first practical iconoscope was constructed in 1931 by Sanford Essig, when he accidentally left one silvered mica sheet in the oven too long.
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Finally, an electron beam periodically sweeps across the target, effectively scanning the stored image, discharging each granule, and producing an electronic signal like in the iconoscope.
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Simple calculations show that, for equally sensitive photosensitive receptors, the iconoscope is hundreds to thousands of times more sensitive than the disk or the Farnsworth scanner.
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The first practical television-camera for picture pickup; invented in 1923 by Vladimir Kosma Zworykin
The Iconoscope (from the Greek: u03B5u1F30u03BAu03CEu03BD "image" and u03C3u03BAu03BFu03C0u03B5u1FD6u03BD "to look, to see") was the first practical video camera tube to be used in early television cameras. The iconoscope produced a much stronger signal than earlier mechanical designs, and could be used under any well-lit conditions...
This device is the "eye" of the TV camera. Television pioneer Vladimir K. Zworykin invented an early model of the iconoscope which made good picture transmission possible. Zworykin was also responsible for the first electronic camera and perfecting the Kinescope. ...