LASER PROCESSING APPARATUS

• Main Authors: SUZUKI, Hiroyuki, KOBAYASHI, Nobutaka, TAKIGAWA, Yasuhiro
• Format: Patent
• Language: English; French; Japanese
• Published: 29.08.2024
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHYSICS; SOLDERING OR UNSOLDERING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING; WELDING; WORKING BY LASER BEAM

This laser processing apparatus (1D) comprises a laser oscillator (2) that emits a laser beam (r), an acoustic optical element (4) that refracts the laser beam (r), and an angle filter (6) that separates first-order light from at least one of zero-order light and second-order light within the laser beam (r) emitted from the acoustic optical element (4). The angle filter (6) is configured so that the transmission rate of the first-order light being transmitted through the angle filter (6) is higher than at least one of the transmission rate of the zero-order light being transmitted through the angle filter (6) and the transmission rate of the second-order light being transmitted through the angle filter (6). Cet appareil de traitement laser (1D) comprend un oscillateur laser (2) qui émet un faisceau laser (r), un élément optique acoustique (4) qui réfracte le faisceau laser (r), et un filtre d'angle (6) qui sépare la lumière de premier ordre d'une lumière d'ordre zéro et/ou d'une lumière de second ordre à l'intérieur du faisceau laser (r) émis par l'élément optique acoustique (4). Le filtre d'angle (6) est configuré de sorte que le débit de transmission de la lumière de premier ordre transmise à travers le filtre d'angle (6) est supérieur à audit au moins un débit de transmission de la lumière d'ordre zéro transmise à travers le filtre d'angle (6) et le débit de transmission de la lumière de second ordre étant transmis à travers le filtre d'angle (6). レーザ加工装置（１Ｄ）は、レーザビーム（ｒ）を出射するレーザ発振器（２）と、レーザビーム（ｒ）を回折させる音響光学素子（４）と、音響光学素子（４）から出射されたレーザビーム（ｒ）のうち０次光および２次光の少なくとも一方と１次光とを分離する角度フィルター（６）とを備える。角度フィルター（６）は、角度フィルター（６）を通過する１次光の通過率が、角度フィルター（６）を通過する０次光の通過率および角度フィルター（６）を通過する２次光の通過率の少なくとも一方よりも高くなるように構成されている。