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公开(公告)号：US20190064451A1
公开(公告)日：2019-02-28
申请号：US16072489
申请日：2017-02-27
Inventor： YOSHIAKI TAKENAKA , HITOSHI NISHIMURA , MAKOTO RYUDO , JINGBO WANG , MASATOSHI NISHIO , KIYOTAKA EIZUMI , HIDEAKI YAMAGUCHI , RYO ISHIKAWA , DOUKEI NAGAYASU
IPC: G02B6/38 , G02B6/42 , B23K26/064
Abstract: A fiber spatial coupling device includes a detachable process fiber, an optical system, and a main body. The process fiber guides laser light. The optical system collects the laser light into the process fiber. The main body holds the optical system, and has a supply port for supplying gas to a space between the process fiber and the optical system.
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Patent Agency Ranking
公开(公告)号：US20190271588A1
公开(公告)日：2019-09-05
申请号：US16417760
申请日：2019-05-21
Inventor： JINGBO WANG , DOUKEI NAGAYASU , YOSHIAKI TAKENAKA , HITOSHI NISHIMURA , MAKOTO RYUDO , KIYOTAKA EIZUMI , HIDEAKI YAMAGUCHI , RYO ISHIKAWA , MASATOSHI NISHIO , TAKASI KAKUTANI , YASUSHI MUKAI , MITSURU MUKAI , HIROYUKI HAYASHIKAWA
Abstract: A laser device includes the following components: a laser resonator for emitting a laser beam; a condenser lens (21) for collecting the laser beam emitted from the laser resonator; an optical fiber (7) for transmitting the laser beam collected by the condenser lens (21); at least one light sensor (5) opposing a light receiving surface of the condenser lens (21) and outside the optical path of the laser beam, the at least one light sensor (5) detecting the amount of return light from the condenser lens (21); and a controller for determining the presence of an abnormality when the value of the amount detected by any of the at least one light sensor (5) is greater than the predetermined maximum threshold.
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公开(公告)号：US20190030641A1
公开(公告)日：2019-01-31
申请号：US16072232
申请日：2017-03-07
Inventor： DOUKEI NAGAYASU , HITOSHI NISHIMURA , MAKOTO RYUDO , JINGBO WANG , YOSHIAKI TAKENAKA , KIYOTAKA EIZUMI , HIDEAKI YAMAGUCHI , RYO ISHIKAWA , MASATOSHI NISHIO
IPC: B23K26/035 , G02B6/28 , B23K26/064 , H01S3/10 , G02B6/42
CPC classification number: B23K26/035 , B23K26/064 , G02B6/2848 , G02B6/4206 , G02B6/425 , H01S3/10
Abstract: A fiber coupling device includes a housing and a window provided in the housing. The fiber coupling device is configured to collectively guide plural laser beams to at least a first fiber, the plurality of laser beams each being emitted from a corresponding one of plural external laser light sources and entering through a laser beam inlet. The housing is configured such that the laser beams enter the housing from the laser beam inlet. The window is provided inside the housing and faces the laser beam inlet. The fiber coupling device is not required to detach when an optical axis is adjusted.
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公开(公告)号：US20190353857A1
公开(公告)日：2019-11-21
申请号：US16461637
申请日：2017-11-27
Inventor： RYO ISHIKAWA , MAKOTO RYUDO , DOUKEI NAGAYASU , HITOSHI NISHIMURA , JINGBO WANG , MASATOSHI NISHIO , HIDEAKI YAMAGUCHI , YOSHIAKI TAKENAKA , KIYOTAKA EIZUMI
IPC: G02B6/42 , B23K26/035 , B23K26/067 , B23K26/06 , B23K26/00
Abstract: A condenser lens for collecting a laser beam (300) is disposed between the laser oscillator and the incident end surface of the optical fiber. The laser beam (300) is divided into a plurality of beams (303, 304). The power of the laser beam (304) is measured and maximized by adjusting the position of the condenser lens. The FFP of the laser beam (303) is measured and minimized by adjusting the position of the condenser lens. These adjusted positions are stored as the first and second lens positions. The FFP of the laser beam (303) is measured while the condenser lens is being moved between these positions so as to make the BPP not more than a predetermined value.
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公开(公告)号：US20190278026A1
公开(公告)日：2019-09-12
申请号：US16426699
申请日：2019-05-30
Inventor： MASATOSHI NISHIO , HITOSHI NISHIMURA , JINGBO WANG , MAKOTO RYUDO , DOUKEI NAGAYASU , HIDEAKI YAMAGUCHI , YOSHIAKI TAKENAKA , KIYOTAKA EIZUMI , RYO ISHIKAWA , YASUSHI MUKAI
Abstract: A fiber coupling device (100) includes the following components: a wedge plate (102) for receiving light and refracting the light in a predetermined direction, a condenser lens (104) for collecting the light refracted by the wedge plate (102); and an optical fiber (107) having an incident surface for receiving the light collected by the condenser lens (104). The wedge plate (102) is held rotatable around the optical axis (200) of the light incident on the wedge plate (102). The light refracted by the wedge plate (102) and collected by the condenser lens (104) is incident on a different point on the incident surface depending on the rotation angle of the wedge plate (102).
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公开(公告)号：US20190262938A1
公开(公告)日：2019-08-29
申请号：US16408681
申请日：2019-05-10
Inventor： DOUKEI NAGAYASU , HITOSHI NISHIMURA , JINGBO WANG , MAKOTO RYUDO , MASATOSHI NISHIO , HIDEAKI YAMAGUCHI , YOSHIAKI TAKENAKA , KIYOTAKA EIZUMI , RYO ISHIKAWA
Abstract: Laser processing device (1) includes: laser-beam switching apparatus (70) that switches between a first optical path and a second optical path as an optical path along which a laser beam is to travel, the first optical path including first fiber (11), the second optical path including second fiber (21) that has a core diameter that is larger than a core diameter of first fiber (11); and processing head (80) that illuminates a same processed point on workpiece (900) with a laser beam that has passed through the first optical path or the second optical path. When illumination with laser beam that has passed through the first optical path is performed for a predetermined period of time, laser-beam switching apparatus (70) switches from the first optical path to the second optical path.
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