发明授权
US4507585A Beam-indexing color picture tube arrangement 失效
光束分度彩色显像管布置

Beam-indexing color picture tube arrangement
摘要:
A frontal light extraction type beam-indexing color picture tube arrangement comprises a phosphor screen which is formed on the inner surface of the tube panel and includes an array of color phosphor stripes each of which has an appropriate afterglow time and an array of index phosphor stripes each of which has a short afterglow time and emits a light index signal representative of the scanning position of an electron beam in the forward direction of the tube panel. A photoelectric converter for receiving the light index signal is provided in front of the tube panel.
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