Laser machining device
AssigneeMitsubishi Electric Corporation
InventorsDaiji Morita, Tomotaka Katsura, Hiroaki Kurokawa
Life of this patent
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Abstract
A laser machining device includes a plurality of oscillators to emit laser beams having different wavelengths from each other; a machining head to emit laser beams emitted from the respective oscillators to a machining object; a plurality of transmission fibers to transmit the laser beams to the machining head; a wavelength dispersion element; and a focusing lens to superpose the laser beams emitted from the transmission fibers, wherein the wavelength dispersion element is arranged at a position at which the laser beams are superposed by the focusing lens.
Claims6
A laser machining device comprising:
- a plurality of oscillators to emit laser beams having different wavelengths from each other;
- a machining head to emit laser beams emitted from the respective oscillators to a machining object;
- a plurality of fibers to transmit the laser beams to the machining head;
- a wavelength dispersion element provided in the machining head;
- and
- an optical element provided in the machining head to superpose laser beams emitted from the fibers on each other, wherein
- the wavelength dispersion element is arranged at a position at which laser beams are superposed by the optical element,
- a first end of each of the plurality of fibers is connected to a corresponding one of the plurality of oscillators;
- a second end of each of the plurality of fibers is arranged along a same plane and in parallel to each other at the machining head;
- and
- the second end of each of the plurality of fibers is spaced apart from each other by an interval there between in the plane;
- a machining lens arranged between the wavelength dispersion element and the machining object, the machining lens to focus laser beams output by the wavelength dispersion element at a machining point on the machining object;
- and
- a mirror arranged between the wavelength dispersion element and the machining lens to change a direction of the laser beams output by the wavelength dispersion element.
A laser machining device comprising;
- a plurality of oscillators to emit laser beams having different wavelengths from each other;
- a machining head to emit laser beams emitted from the respective oscillators to a machining object;
- a plurality of fibers to transmit the laser beams to the machining head;
- a diffraction grating provided in the machining head;
- and
- a lens provided in the machining head to superpose laser beams emitted from the fibers on each other, wherein
- the diffraction grating is arranged at a position at which laser beams are superposed by the lens,
- a first end of each of the plurality of fibers is connected to a corresponding one of the plurality of oscillators,
- a second end of each of the plurality of fibers is arranged along a same plane and in parallel to each other at the machining head, and
- the second end of each of the plurality of fibers is spaced apart from each other by an interval therebetween in the plane;
- a machining lens arranged between the diffraction grating and the machining object, the machining lens to focus laser beams output by the diffraction grating at a machining point on the machining object, and
- a mirror arranged between the diffraction crating and the machining lens to change a direction of the laser beams output by the diffraction grating.
Dependencies are inferred from the claim text.