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    LASER MACHINING DEVICE AND LASER MACHINING METHOD
    1.
    发明申请
    LASER MACHINING DEVICE AND LASER MACHINING METHOD 有权
    激光加工设备和激光加工方法

    公开(公告)号：US20130068742A1

    公开(公告)日：2013-03-21

    申请号：US13678006

    申请日：2012-11-15

    Applicant: Hamamatsu Photonics K.K.

    Inventor： Naoya MATSUMOTO ,  Takashi INOUE ,  Norihiro FUKUCHI ,  Haruyasu ITO ,  Yuu TAKIGUCHI

    IPC: B23K26/00

    CPC classification number: B23K26/00 ,  B23K26/06 ,  B23K26/0624 ,  B23K26/064 ,  B23K26/0661 ,  B23K26/067 ,  B23K26/355 ,  G03H1/2294 ,  G03H2001/0094 ,  G03H2225/32

    Abstract: A laser machining device 1 comprises a laser light source 10, a spatial light modulator 20, a controller 22, a converging optical system 30, and a shielding member 40. The phase-modulating spatial light modulator 20 inputs a laser beam outputted from the laser light source 10, displays a hologram modulating a phase of the laser beam at each of a plurality of pixels arranged two-dimensionally, and outputs the phase-modulated laser beam. The controller 22 causes the spatial light modulator 20 to display a plurality of holograms sequentially, lets the converging optical system 30 converge the laser beam outputted from the spatial light modulator 20 at converging positions having a fixed number of M, selectively places N converging positions out of the M converging positions into a machining region 91, and machines an object to be machined 90.

    Abstract translation: 激光加工装置1包括激光源10，空间光调制器20，控制器22，会聚光学系统30和屏蔽构件40.相位调制空间光调制器20输入从激光器输出的激光束 光源10显示调制在二维排列的多个像素中的每一个处的激光束的相位的全息图，并输出相位调制的激光束。 控制器22使空间光调制器20依次显示多个全息图，使会聚光学系统30将从空间光调制器20输出的激光束会聚在具有固定数量的M的会聚位置，选择性地将N个收敛位置放出 的M个会聚位置进入加工区域91，并且对要加工的物体进行加工90。

    PULSED LIGHT WAVEFORM MEASUREMENT METHOD AND WAVEFORM MEASUREMENT DEVICE
    2.
    发明申请
    PULSED LIGHT WAVEFORM MEASUREMENT METHOD AND WAVEFORM MEASUREMENT DEVICE 审中-公开

    公开(公告)号：US20190128741A1

    公开(公告)日：2019-05-02

    申请号：US16088875

    申请日：2017-03-15

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Koji TAKAHASHI ,  Haruyasu ITO ,  Koyo WATANABE

    IPC: G01J11/00 ,  G01J3/447 ,  G02F1/137 ,  G01J3/02

    CPC classification number: G01J11/00 ,  G01J3/0297 ,  G01J3/28 ,  G01J3/447 ,  G02F1/01 ,  G02F1/13 ,  G02F1/137

    Abstract: In a waveform measurement method, first, initial pulsed light is spatially dispersed for respective wavelengths. Next, the initial pulsed light is input to a polarization dependent type SLM in a state where a polarization plane is inclined with respect to a modulation axis direction, and a phase spectrum of a first polarization component of the initial pulsed light along the modulation axis direction is modulated, to cause a time difference between first pulsed light Lp1 including the first polarization component and second pulsed light Lp2 including a second polarization component orthogonal to the first polarization component. After combining the wavelength components, an object is irradiated with the pulsed light Lp1 and the pulsed light Lp2, and light generated in the object is detected. The above detection operation is performed while changing the time difference, and a temporal waveform of the pulsed light Lp1 is obtained.

    DEVICE FOR GENERATING PATTERNED LIGHT INTERFERENCE
    3.
    发明申请
    DEVICE FOR GENERATING PATTERNED LIGHT INTERFERENCE 审中-公开
    用于产生图形光干扰的装置

    公开(公告)号：US20150346685A1

    公开(公告)日：2015-12-03

    申请号：US14654929

    申请日：2013-10-24

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Haruyasu ITO ,  Takashi INOUE ,  Hiroshi SAITO ,  Haruyoshi TOYODA

    IPC: G03H1/22 ,  B23K26/067 ,  G03H1/08

    CPC classification number: G03H1/2205 ,  B23K26/066 ,  B23K26/0676 ,  B23K26/355 ,  G02B26/06 ,  G02B27/42 ,  G03H1/2294 ,  G03H2001/0094 ,  G03H2001/085 ,  G03H2001/2207 ,  G03H2223/55

    Abstract: A patterned light interference generating device 1 is provided with a laser light source 10; a wavefront controller 20 for receiving laser light, presenting a hologram pattern to control the wavefront of the laser light, and outputting wavefront-controlled light; an imaging optical system 40 for imaging the wavefront-controlled light at a target position 2; a filter 50 arranged at a portion of concentration by the imaging optical system 40; and a control unit 30 for controlling the hologram pattern; the filter 50 has a plurality of slits in one-to-one correspondence to a plurality of bright spots of a desired order; each of the plurality of slits has an elongated shape extending radially from a center of the plurality of bright spots of the desired order; one end on the center side of each of the plurality of slits is separated from the center.

    Abstract translation: 图案化光干涉产生装置1设置有激光光源10; 用于接收激光的波前控制器20，呈现全息图图案以控制激光的波前，并输出波前控制的光; 用于对目标位置2处的波前控制的光进行成像的成像光学系统40; 配置在成像光学系统40的浓度部分的过滤器50; 以及控制单元30，用于控制全息图图形; 过滤器50具有与所需顺序的多个亮点一一对应的多个狭缝; 多个狭缝中的每一个具有从所需顺序的多个亮点的中心径向延伸的细长形状; 多个狭缝中的每一个的中心侧的一端与中心分离。

    ATTENUATOR DEVICE AND LASER PROCESSING APPARATUS
    4.
    发明公开
    ATTENUATOR DEVICE AND LASER PROCESSING APPARATUS 审中-公开

    公开(公告)号：US20240033849A1

    公开(公告)日：2024-02-01

    申请号：US18010272

    申请日：2021-04-19

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Haruyasu ITO

    IPC: B23K26/06 ,  G02B27/28 ,  G02B5/30

    CPC classification number: B23K26/0648 ,  G02B27/281 ,  G02B5/3066

    Abstract: An attenuator device includes: a first window pair that includes a pair of first windows having a pair of first surfaces extending to form a Brewster's angle with an optical axis; a rotation holding portion which holds the first window pair to be rotatable around the optical axis; a second window pair that includes a pair of second windows having a pair of second surfaces extending to form a Brewster's angle with the optical axis; and a λ/4 phase element which gives a phase difference of λ/4 between a polarized component parallel to an optical axis and a polarized component orthogonal to the optical axis when a wavelength of laser light is λ. The second window pair is disposed so that a vibration direction of a P-polarized component transmitted through the second window pair is inclined with respect to the optical axis of the λ/4 phase element by 45° when viewed from a direction parallel to the optical axis.

    AUTOCORRELATION MEASUREMENT DEVICE
    5.
    发明申请
    AUTOCORRELATION MEASUREMENT DEVICE 审中-公开

    公开(公告)号：US20180245984A1

    公开(公告)日：2018-08-30

    申请号：US15754377

    申请日：2016-08-24

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Haruyasu ITO ,  Yasunori IGASAKI ,  Junji OKUMA

    IPC: G01J11/00 ,  G02F1/37

    CPC classification number: G01J11/00 ,  G02F1/37 ,  G02F2202/20

    Abstract: An autocorrelation measurement device includes a first reflection member, a second reflection member, a focusing unit, a nonlinear optical crystal, a detection unit, a filter, an aperture, a delay adjusting unit, and an analysis unit. Incident pulsed light is transmitted through the second reflection member and incident on the first reflection member. First pulsed light reflected on a first reflection surface of the first reflection member and a second reflection surface of the second reflection member and second pulsed light reflected on a second reflection surface of the first reflection member and a first reflection surface of the second reflection member are incident on the nonlinear optical crystal via the focusing unit. Second harmonic light generated in the nonlinear optical crystal is detected by the detection unit.

    IMAGING SYSTEM AND IMAGING METHOD
    7.
    发明申请
    IMAGING SYSTEM AND IMAGING METHOD 审中-公开

    公开(公告)号：US20200301174A1

    公开(公告)日：2020-09-24

    申请号：US16089400

    申请日：2017-03-15

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Koyo WATANABE ,  Koji TAKAHASHI ,  Takashi INOUE ,  Haruyasu ITO

    IPC: G02F1/01 ,  H04N5/232 ,  G02B5/30

    Abstract: An imaging system includes a light source for outputting initial pulsed light, a polarization control unit for rotating a polarization plane of the initial pulsed light, an optical pulse shaping unit for inputting the initial pulsed light with the rotated polarization plane, and outputting first pulsed light Lp1 having a first polarization direction and second pulsed light Lp2 having a second polarization direction different from the first polarization direction with a time, an irradiation optical system for irradiating an imaging object with the pulsed light Lp1 and the pulsed light Lp2, a light separation element for separating the pulsed light Lp1 and the pulsed light Lp2 reflected by or transmitted through the imaging object on the basis of the polarization directions, an imaging unit for imaging the pulsed light Lp1, and an imaging unit for imaging the pulsed light Lp2.

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