Method for driving a photoelectric device and a method for driving an image intensifier using the photocathode device
AssigneeHamamatsu Photonics K.K.
InventorsAkira Takahashi, Mitsunori Nishizawa
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Abstract
There is disclosed a method for driving a photoelectric device comprising a photocathode, and controller for controlling electrons emitted from the photocathode, wherein gate voltages are applied respectively to the photocathode and the controller so that the electrons from the photocathode are not outputted from the controller.
Claims4
A method of driving a photoelectric device wherein the photoelectric device includes a photocathode, a micro-channel plate for multiplying electrons emitted from the photocathode and control means for controlling electrons emitted from the photocathode, the method comprising the steps of:
- applying a first negative voltage to an electron input electrode of the micro-channel plate, while another electrode of the micro-channel plate is maintained at a reference potential;
- and
- applying a second negative voltage which is lower than the first negative voltage to the photocathode at substantially the same time as the application of the first negative voltage to thereby perform an opening of a gate in the photocathode and in the micro-channel plate.
A method of driving an image intensifier, the image intensifier including a photocathode, a micro-channel plate for multiplying electrons emitted from the photocathode, control means for controlling electrons emitted from the photocathode and a phosphor screen for converting the electrons from the micro-channel plate into visible radiation, said method comprising the steps of:
- applying a first negative voltage to an input surface of the micro-channel plate, while an electrode of the respect to the reference potential to the phosphor screen;
- and
- applying a second negative voltage which is lower than the first negative voltage to the photocathode at substantially the same time as the application of the first negative voltage to thereby perform an opening of a gate in the photocathode and in the micro-channel plate.
Dependencies are inferred from the claim text.