Laser diode primer and cannon igniting propelling charges with electrical signal using the same

A cannon, comprising:

• a barrel having a chamber formed therein in which a shell and a propelling charge are mounted;
• a breech ring connected to the rear of the barrel, and having a shell inlet communicating with the chamber;
• a breechblock connected to the breech ring to be movable upward and downward with respect to the breech ring between a closed position that closes the shell inlet and an open position that opens the shell inlet, and having a primer flame hole communicating with the chamber at the closed position;
• an ignition device mounted to be partially movable with respect to the breechblock and configured to ignite the propelling charge mounted in the chamber through the primer flame hole;
• and
• a controller configured to transfer an electrical firing signal to the ignition device,
• wherein the ignition device comprises:
• a firing assembly configured to move forward and backward as the breechblock moves;
• a laser diode primer comprising a case and gunpowder disposed inside the case, connected to the front of the firing assembly and contacting the rear of the primer flame hole at the closed position, and configured to receive the electrical firing signal to ignite the propelling charge through the primer flame hole;
• and
• a firing pin connected to the firing assembly to be movable forward and backward with respect to the firing assembly and configured to transfer the electrical firing signal to the laser diode primer while in contact with a rear end of the laser diode primer.