一种从阴极象推算显象管阴极电流密度的方法
THE ESTIMATION OF THE CATHODE CURRENT DENSITY OF CRTs FROM CATHODE IMAGE
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摘要: 本工作利用电视和微处理技术,把整幅阴极象存入微机内存,经处理后推算出阴极电流密度。根据显象管阴极电流模拟值等于整幅图象的电流数字值之和的原理,可推出各象素的发射电流密度。因此本方法可直接对实用显象管推出阴极有效发射区中的电流密度分布。
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关键词:
- 显象管; 阴极象; 电流密度
Abstract: The estimation of the cathode current density of CRTs from cathode image by means of TV camera and micro-processing technique is proposed. It is supposed that the relation between the analog current and the summation of the digital current value of picture element is equal. Then the cathode current density can be obtained from the processed emission current density distribution curve. -
叶毓林,蒋鼎瑛,杨凌云,陈济林,杨秀玲,显象管阴极象的检测方法,第七届真空电子学年会论文摘要,1984年,成都,第127页.[2]P. G. J. Batten, Proc. of the SID, 25(1984), 155.[3]H. Moss, Narrow Angle Electron Guns and CRTs, Academic, New York, (1968).[4]M. Itazu, Life Time Estimation of Cathode Ray Tubes, Proc. of the 6th International Display Research Conference, Tokyo, Japan, (1986), p. 156. -
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