單槍彩色密封油膜光閥管的電子槍與偏轉(zhuǎn)聚焦系統(tǒng)的對(duì)中要求
THE EVALUATION OF THE ALIGNING TOLERANCEBETWEEN THE ELECTRON GUN AND THE DFS INTHE SEALED LIGHT VALVE TUBE
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摘要: 正 單槍彩色密封油膜光閥管的原理和結(jié)構(gòu)見文獻(xiàn)[1]。它的電子槍和偏轉(zhuǎn)聚焦系統(tǒng)由于不是整體對(duì)中裝配,因此存在對(duì)中公差的要求。由于電子槍的電極尺寸和各電極之間的距離可以確定,電子束的光斑大小可從電子槍的通過率和限制膜孔的大小推算出,所以電子槍與偏轉(zhuǎn)聚焦系統(tǒng)的對(duì)中公差要求可以據(jù)此進(jìn)行估計(jì)。 (一)電子槍和偏轉(zhuǎn)聚焦系統(tǒng)的結(jié)構(gòu) 單槍彩色油膜光閥管的電子槍是皮爾斯槍,在陽極上有限制膜孔。 偏轉(zhuǎn)聚焦系統(tǒng)包括:小偏轉(zhuǎn)板、預(yù)偏轉(zhuǎn)板、主偏轉(zhuǎn)板和漂移環(huán)等。其中預(yù)偏轉(zhuǎn)板、主
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關(guān)鍵詞:
Abstract: This paper describes the functions of both the toroidal alignment coil and the centering deflection plates in the sealed light valve tube. If the electrode sizes, the spaces between electrodes and the electron beam transparency are known, the spot size and the aligning tolerance between the electron gun and DFS(deflection focus system) can be evaluated. -
W. E. Glenn, SMPTE. 79(1970), 788. -
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