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常见的光电管光敏阴极都涂制于玻壁上,管子结构多属中心阳极型.电极的安置是,阳极位于中心,圆面形阴极或半球面形的阴极包围在外.由于工作时使用方式的不同,致使管内的电位分布也不一样.本文将对两种不同使用情况进行讨论:一种是当平行光线均匀照射于发射层表面时,对阴极表面的电位分布进行计算,并叙述阴极面上不等电位对管子性能的影响.一种是当聚焦光束入射于阴极面的中心处时,对阴、阳极轴向各点的电位进行计算分析,同时还说明对电位分布进行计算的意义以及极间电位对工作性能的影响.
Common phototransistor photosensitive cathodes are painted on the glass wall, the tube structure is mostly central anode type. The electrode is placed in the anode at the center of the cathode or hemispherical dome shaped cathode surrounded by the use of the way Different, resulting in the potential distribution of the tube is not the same.This article will discuss two different uses: one is parallel to the surface of the emitter layer of light evenly on the cathode surface potential distribution is calculated, and describes the cathode surface Unequal potential on the tube performance.One is when the focused beam incident on the cathode surface at the center of the cathode and anode axial potential calculation and analysis of points at the same time also shows the significance of the potential distribution of the calculation and pole Potential effects on performance.