Global shutter for transmission mode secondary electron intensifier by a low voltage signal

A method for shuttering the continued draw of electrons from an electron multiplier within an image intensifier tube, wherein the image intensifier tube comprises said electron multiplier spaced in a vacuum between a photocathode and an anode, wherein the anode is comprised of a phosphor coating side, wherein the phosphor coating side is in the vacuum and faces the electron multiplier, wherein the electron multiplier comprises a semiconductor die, wherein a digital imager is configured to send electrical signals across an electrical bus onto the electron multiplier, wherein a positive bias variable first voltage is coupled between the photocathode and the electron multiplier to draw electrons from the photocathode onto the electron multiplier, wherein a negative bias shutter voltage is coupled across opposed surface of the electron multiplier to shutter continued draw of electrons from the electron multiplier for substantially discontinuing display of an image from the image intensifier tube, wherein a positive bias variable second voltage of between 250 volts to 2000 volts is coupled from an automatic brightness controller between the electron multiplier and a ground supply, wherein the positive bias variable second voltage is coupled between the electron multiplier and a second electron multiplier that is coupled to the ground supply, and wherein a positive bias third voltage between 4150 to 4275 volts is coupled between the ground supply and the anode, comprising:

• applying a positive bias between said photocathode and an electron entry surface of the electron multiplier to draw multiplied electrons to the electron multiplier;
• applying a negative shutter bias between the electron entry surface and a multiplied electron emission surface of the electron multiplier to substantially discontinue the draw of multiplied electrons through the electron multiplier.