公开(公告)号：US20170288365A1

公开(公告)日：2017-10-05

申请号：US15511049

申请日：2015-08-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKUMA MOTOFUJI ,  TAKAYUKI YOSHIDA ,  NAOTO UEDA ,  KOUJI OOMORI

IPC: H01S5/00 ,  H01S5/40 ,  G02B19/00 ,  H01S5/022

CPC classification number: H01S5/005 ,  G02B19/0057 ,  G02B27/0961 ,  G02B27/0966 ,  H01S5/022 ,  H01S5/02288 ,  H01S5/4025 ,  H01S5/4031

Abstract: A laser module according to the present disclosure includes a laser diode, a first collimating lens, and a beam twister. The laser diode includes a plurality of emitters and emits laser light from each of the plurality of emitters through a light emission surface. The first collimating lens is provided at a first distance from the light emission surface of the laser diode and parallelizes a fast-axis-wise divergence of the laser light. The beam twister is provided at a second distance away from the first collimating lens and turns the laser light approximately 90 degrees. Each of the plurality of emitters has a width of 5 μm to 120 μm on the light emission surface. The plurality of emitters have a pitch of 295 μm to 305 μm on the light emission surface.

公开(公告)号：US20210346984A1

公开(公告)日：2021-11-11

申请号：US17232412

申请日：2021-04-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： IZURU NAKAI ,  TAKAAKI KASSAI ,  TAKAYUKI YOSHIDA

IPC: B23K26/0622 ,  B23K26/064 ,  B23K26/067

Abstract: A laser processing apparatus includes a light source including a laser oscillator that emits laser light; a power supply that supplies a current to the light source; a deflection unit that is provided on an optical path of the laser light emitted from the light source and includes an optical element that changes an amount of transmission of the laser light to deflect at least a part of the laser light; an optical separation unit that is provided on the optical path of the laser light passing through the deflection unit, shields higher-order light that is included in the laser light and deflected by the optical element in the deflection unit, and transmits zero-order light that is included in the laser light and passes through the deflection unit; and a signal synchronization unit that controls selectively turns on or off the current in synchronization with a timing at which the higher-order light is deflected by the optical element.

公开(公告)号：US20220173576A1

公开(公告)日：2022-06-02

申请号：US17673867

申请日：2022-02-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKAYUKI YOSHIDA ,  TAKAAKI KASSAI ,  IZURU NAKAI

IPC: H01S5/40

Abstract: Provided is a laser oscillation device including; a plurality of semiconductor laser diodes (1a to 1e); optical component (5) that directs a plurality of laser beams emitted from the plurality of semiconductor laser diodes in a specific direction to generate a superimposed laser beam including the plurality of laser beams and propagating in the specific direction; and optical switching element (130) that receives the superimposed laser beam from optical component (5). The superimposed laser beam has a plurality of wavelengths.

公开(公告)号：US20210234337A1

公开(公告)日：2021-07-29

申请号：US17092841

申请日：2020-11-09

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKAAKI KASSAI ,  TAKAYUKI YOSHIDA ,  AKIHIKO ISHIBASHI

IPC: H01S5/042 ,  H01S5/40 ,  H01S5/022

Abstract: A laser oscillator includes a first laser diode that emits first laser light, a second laser diode that emits second laser light having a wavelength different from a wavelength of the first laser light, a first current source that drives the first laser diode, a second current source that drives the second laser diode, a combiner that superimposes the first laser light with the second laser light, and an output mirror that emits laser light combined by the combiner to the outside.

公开(公告)号：US20170149205A1

公开(公告)日：2017-05-25

申请号：US15322232

申请日：2015-07-09

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKAYUKI YOSHIDA ,  JING-BO WANG

IPC: H01S5/024 ,  H01S5/042

CPC classification number: H01S5/02423 ,  H01L23/473 ,  H01L2924/0002 ,  H01S5/024 ,  H01S5/02476 ,  H01S5/0425 ,  H01S5/4025 ,  H01S5/42 ,  H01L2924/00

Abstract: A semiconductor laser device of the present disclosure includes a cooling plate, an insulating sheet, a first cooling block, and a first semiconductor laser element. The conductive cooling plate includes a water supply passage and a drain passage. The insulating sheet is provided to the cooling plate, and includes a first through hole connected to the water supply passage and a second through hole connected to the drain passage. A first cooling block is provided to the insulating sheet, includes therein a first tube connected to the first through hole and the second through hole, and is electrically conductive. The first semiconductor laser element is provided to the first cooling block. The first semiconductor laser element includes a first electrode, and a second electrode opposite to the first electrode. The first electrode is electrically connected to the first cooling block, and the cooling plate is at a floating potential.