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前言氧化铅视象管是以氧化铅光电导层作为光敏靶的电视摄象管,这种管子具有灵敏度高、光电转换特性呈线性、惰性小以及分辨能力好等特点,是适合于彩色电视广播用的优越摄象管。该管的另一个特点是暗电流非常小,在正常运用条件下只有1毫微安数量级。暗电流的存在,影响着管子所摄取的图象的底色,当它非常小而且相当均匀时,其影响很不显著。但当它相当大而且存在于靶面局部某一处时,图象上便会出现底色不均匀或产生斑点等缺陷。此外,暗电流变大也是管子寿命
Preface Lead oxide phototube is the lead photoconductive layer as the photosensitive target of the TV camera tube, this tube with high sensitivity, linearity of the photoelectric conversion properties, small inertia and good resolving power and other characteristics, is suitable for color television broadcasting Used superior camera tube. Another feature of the tube is that the dark current is very small, which is only on the order of 1 nanofarad under normal operating conditions. The presence of dark current, which affects the background of the image taken by the tube, is insignificant when it is very small and fairly uniform. However, when it is quite large and exists somewhere in the target surface, defects such as uneven color or spots appear on the image. In addition, dark current is also a big pipe life