Laser device for defense against flying object and operation method thereof

A laser device for aircraft defense, comprising:

• a laser oscillator that outputs a laser beam;
• a LASER BEAM IRRADIATION AREA GENERATOR that generates a square pyramid-shaped laser beam irradiation area in air based on the output laser beam;
• and
• a controller that controls the LASER BEAM IRRADIATION AREA GENERATOR to generate a square pyramid-shaped laser beam irradiation surface having an energy density equal to or greater than a preset threshold in the square pyramid-shaped laser beam irradiation area and controls to generate the square pyramid-shaped laser beam irradiation area which is a three-dimensional space from the laser device to the square pyramid-shaped laser beam irradiation surface and in which aircraft located on the square pyramid-shaped laser beam irradiation area is hit with the laser beam,
• wherein the LASER BEAM IRRADIATION AREA GENERATOR includes:
• a beam transmission optical system that reflects the output laser beam and transmits the reflected output laser beam to a reflection optical system;
• the reflection optical system that is disposed between the beam transmission optical system and the rotating mirror unit and reflects the laser beam transmitted from the beam transmission optical system to the rotating mirror unit;
• a rotating mirror unit that has a plurality of mirrors provided on a circumference and irradiates the reflected laser beam into the air through the mirror as the rotating mirror unit rotates;
• and
• the controller reciprocates the reflection optical system within a preset range to generate the square pyramid-shaped laser beam irradiation surface based on the x-axis scanning of the rotating mirror unit and the y-axis scanning performed by the reciprocal rotation of the reflection optical system.

A laser device for aircraft defense, comprising:

• a laser oscillator that outputs a laser beam;
• a LASER BEAM IRRADIATION AREA GENERATOR that generates a square pyramid-shaped laser beam irradiation area in air based on the output laser beam;
• and
• a controller that controls the LASER BEAM IRRADIATION AREA GENERATOR to generate a square pyramid-shaped laser beam irradiation surface having an energy density equal to or greater than a preset threshold in the square pyramid-shaped laser beam irradiation area and controls to generate the square pyramid-shaped laser beam irradiation area which is a three-dimensional space from the laser device to the square pyramid-shaped laser beam irradiation surface and in which aircraft located on the square pyramid-shaped laser beam irradiation area is hit with the laser beam,
• wherein the LASER BEAM IRRADIATION AREA GENERATOR includes:
• a beam transmission optical system that reflects the output laser beam and transmits the reflected output laser beam to a second rotating mirror unit;
• the second rotating mirror unit that is located between the beam transmission optical system and a first rotating mirror unit, has a plurality of mirrors along a circumference, and scans the laser beam reflected from the beam transmission optical system to the first rotating mirror unit as the second rotating mirror unit rotates;
• the first rotating mirror unit that has a plurality of mirrors on a circumference and emits the reflected laser beam through the plurality of mirrors into the air as the first rotating mirror rotates;
• and
• the controller controls the second rotating mirror unit to rotate so that the reflected laser beam is scanned on a surface of the plurality of mirrors of the first rotating mirror unit in order to generate the square pyramid-shaped laser beam irradiation surface based on the x-axis scanning of the first rotating mirror unit and the y-axis scanning performed by the second rotating mirror unit.

A laser device for aircraft defense, comprising:

• a laser oscillator that outputs a laser beam;
• a LASER BEAM IRRADIATION AREA GENERATOR that generates a square pyramid-shaped laser beam irradiation area in air based on the output laser beam;
• and
• a controller that controls the LASER BEAM IRRADIATION AREA GENERATOR to generate a square pyramid-shaped laser beam irradiation surface having an energy density equal to or greater than a preset threshold in the square pyramid-shaped laser beam irradiation area and controls to generate the square pyramid-shaped laser beam irradiation area which is a three-dimensional space from the laser device to the square pyramid-shaped laser beam irradiation surface and in which aircraft located on the square pyramid-shaped laser beam irradiation area is hit with the laser beam,
• wherein the laser oscillator includes a first laser oscillator and a second laser oscillator, and transmits a first laser beam output by the first laser oscillator to a rotating mirror unit as a first reflection beam through the beam transmission optical system and transmits a second laser beam output by the second laser oscillator to the rotating mirror unit as a second reflection beam that is horizontal to the first reflection beam through the beam transmission optical system,
• the LASER BEAM IRRADIATION AREA GENERATOR includes:
• a beam transmission optical system that reflects the output laser beam and transmits the reflected output laser beam to a rotating mirror unit;
• a rotating mirror unit that has a plurality of mirrors provided on a circumference and irradiates the reflected laser beam into the air through the mirror as the rotating mirror unit rotates;
• a tilting unit that tilts a rotation axis of the rotating mirror unit;
• and
• the controller controls to generate the square pyramid-shaped laser beam irradiation surface based on x-axis scanning of the rotating mirror unit performed based on the first reflection beam and the second reflection beam and y-axis scanning performed by the tilting of the rotating mirror unit.