Optical waveform observing apparatus

Details Optical waveform observing apparatus Optical waveform observing apparatus

1988-12-29

1990-07-17

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

313529, H01J 3150

Patent

active

049422936

ABSTRACT:
Optical waveform observing apparatus including a sampling streak tube to which is applied an incident light beam having a waveform of repetitive frequency to be observed. An electron beam corresponding to the incident light beam is repetitively deflected in the streak tube, in response to a repetitive deflecting trigger signal, to sample the electron beam. The deflecting trigger signal is generated by a time sweep circuit that stepwise delays the occurrence of that signal when the sampling operation is carried out a predetermined number of times. An integration circuit integrates the output of the streak tube for the predetermined number of sampling operations for a sampling time and is then reset to begin integrating the streak tube output for the predetermined number of sampling operations for a next sampling time. The integration circuit output is digitized and displayed.

REFERENCES:
patent: 4740685 (1988-04-01), Koishi
patent: 4801796 (1989-01-01), Kinoshita et al.

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