一種從陰極象推算顯象管陰極電流密度的方法
THE ESTIMATION OF THE CATHODE CURRENT DENSITY OF CRTs FROM CATHODE IMAGE
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摘要: 本工作利用電視和微處理技術(shù),把整幅陰極象存入微機(jī)內(nèi)存,經(jīng)處理后推算出陰極電流密度。根據(jù)顯象管陰極電流模擬值等于整幅圖象的電流數(shù)字值之和的原理,可推出各象素的發(fā)射電流密度。因此本方法可直接對(duì)實(shí)用顯象管推出陰極有效發(fā)射區(qū)中的電流密度分布。
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關(guān)鍵詞:
- 顯象管; 陰極象; 電流密度
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. -
葉毓林,蔣鼎瑛,楊凌云,陳濟(jì)林,楊秀玲,顯象管陰極象的檢測(cè)方法,第七屆真空電子學(xué)年會(huì)論文摘要,1984年,成都,第127頁(yè).[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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