The invention discloses a single-lamp single-rod double-cavity light
path system for a
laser cutting machine. The light
path system comprises a red lamp indicator, a total reflective mirror, light-gathering cavities, a semi-reflective mirror, a water-cooled beam-expanding mirror and a
cutting head which are arranged in sequence. The light-gathering cavities comprise the
first light-gathering cavity and the second light-gathering cavity. A first
xenon lamp is arranged at one end of the
first light-gathering cavity, and a first
crystal rod is arranged at the other end of the
first light-gathering cavity. A second
xenon lamp is arranged at one end of the second light-gathering cavity, and a second
crystal rod is arranged at the other end of the second light-gathering cavity. The
cutting head comprises a head body, a 45-degree total reflective mirror, a focusing mirror, a protecting mirror and a
nozzle, wherein the 45-degree total reflective mirror, the focusing mirror, the protecting mirror and the
nozzle are connected to the head body in sequence. According to the single-lamp single-rod double-cavity light
path system for the
laser cutting
machine, the mode of double light-gathering cavities is adopted, and the
laser power can be increased by fifty percent when the same power is adopted by a laser power source, so that the output power of the equipment is increased, and the cutting capacity is improved.