Light waveform observing instrument |
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| 申请号 | JP16353787 | 申请日 | 1987-06-30 | 公开(公告)号 | JPS649325A | 公开(公告)日 | 1989-01-12 |
| 申请人 | Hamamatsu Photonics Kk; | 发明人 | KOISHI YU; TSUJIMURA ETSUO; WATANABE MOTOYUKI; TSUCHIYA YUTAKA; | ||||
| 摘要 | PURPOSE:To effectively remove the effect of a background noise and a dark current and obtain a highly accurate observed data by subtracting the integrated value of data obtained for a period wherein no deflected trigger signal is outputted from the integrated value of sampled data obtained during the deflected trigger signals are repetitively outputted. CONSTITUTION:The waveform of an incident light is observed by a sampling streak tube 1. At this time, an electric trigger signal TR with a repetitive frequency is delayed by a given time in a time sweep circuit 31, deflected 13 and outputted as a deflected trigger signal. Then, the output of the deflected trigger signal is stopped by a control circuit 32 via the circuit 31 and a blanking circuit 22 for the same period as that of the output of the deflected trigger signal. Data for the periods wherein the deflected trigger signal is outputted and is not outputted are integrated in a integration type amplifier circuit 34 and the integrated data only of a background noise and a dark current are subtracted from the integrated sampled data including the background noise and the dark current whereby data which are little affected by the background noise and the dark current can be obtained. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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