Patent ID: 8295662

Claim:
A laser system, comprising: an optical cable jumper comprising an input terminal and an output terminal to transmit a laser beam from a bundle-type optical cable connected to the input terminal to a single-type optical cable connected to the output terminal; and a laser gun connected to the single-type optical cable to illuminate the laser beam, transmitted from the bundle-type optical cable to the single-type optical cable in the optical cable jumper, to a target object, the output terminal of the optical cable jumper has a first numerical aperture (NM, and an output terminal of the laser gun has a second NA; the first NA is equal to a difference between a first diameter of a laser beam profile at the optical cable jumper at a predetermined percentage value region where an energy distribution of the laser beam has a maximum value and a second diameter of the laser beam profile at the optical cable jumper at a focus region of the laser beam divided by a distance between the predetermined percentage value region and the focus region; and the second NA is equal to a difference between a third diameter of a laser beam profile at the laser gun at a predetermined percentage value region where an energy distribution of the laser beam has a maximum value and a fourth diameter of the laser beam profile at the laser gun at a focus region of the laser beam divided by a distance between the predetermined percentage value region and the focus region.