Talk:Iconoscope

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[edit] Date of invention

There was a major error in the article. Although Vladimir Zworykin invented an electronic television tube in 1923, it was not an iconoscope, which is what he dubbed his 1931 tube. The difference was that his 1923 tube used a two-sided plate, with the lens focusing the image on photoelectric mosaic the front side of the plate, and the electronic beam sweeping the back side of the plate. The 1931 iconoscope used a single-sided target, with the electronic beam scanning the same side covered with the photoelectric surface. — Walloon (talk) 22:58, 14 March 2008 (UTC)