公开(公告)号：US10001412B2

公开(公告)日：2018-06-19

申请号：US15303900

申请日：2015-04-08

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takashi Inoue ,  Koyo Watanabe ,  Koji Takahashi ,  Naoya Matsumoto

IPC: G01J11/00 ,  G02B5/32 ,  G01J9/00

CPC classification number: G01J11/00 ,  G01J9/00 ,  G02B5/32 ,  G02F2203/56

Abstract: A waveform measurement device includes an input spectrum acquisition unit for acquiring an input intensity spectrum being an intensity spectrum of pulsed light, an optical element inputting the pulsed light and outputting light having an intensity spectrum corresponding to a phase spectrum of the pulsed light, an output spectrum acquisition unit for acquiring an output intensity spectrum being an intensity spectrum of the light output from the optical element, and a phase spectrum determination unit for determining the phase spectrum of the pulsed light by comparing an output intensity spectrum calculated when the pulsed light having an input intensity spectrum and a virtual phase spectrum is assumed to be input to the optical element with the output intensity spectrum acquired in the output spectrum acquisition unit. The phase spectrum determination unit sets the virtual phase spectrum by deforming the control phase spectrum.

公开(公告)号：US09784980B2

公开(公告)日：2017-10-10

申请号：US14782015

申请日：2014-03-25

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takashi Inoue ,  Hirotoshi Terada

IPC: G02B27/10 ,  G02B27/28 ,  G02F1/135 ,  B23K26/067 ,  B23K26/064 ,  G02B27/09 ,  B23K26/06

CPC classification number: G02B27/1006 ,  B23K26/064 ,  B23K26/0648 ,  B23K26/067 ,  B23K26/0676 ,  G02B27/0905 ,  G02B27/283 ,  G02B27/286 ,  G02F1/135

Abstract: An optical module (1A) includes a polarization beam splitter (10A), polarization elements (20 and 40) having nonreciprocal optical activity and respectively arranged on an optical path of a first polarization component (L2) transmitted through a light splitting surface (11) in irradiation light (L1) and an optical path of a second polarization component (L4) reflected in the light splitting surface (11), a first reflective SLM (30) that modulates and reflects a first polarization component (L2) passing through the first polarization element (20), and a second reflective SLM (50) that modulates and reflects the second polarization component (L4) passing through the second polarization element (40). First modulation light (L3) passing through the polarization element (20) again and then reflected by the light splitting surface (11) and second modulation light (L5) passing through the polarization element (40) again and then transmitted through the light splitting surface (11) are combined with each other.

公开(公告)号：US09519141B2

公开(公告)日：2016-12-13

申请号：US14895521

申请日：2014-05-29

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Hongxin Huang ,  Takashi Inoue

IPC: A61B3/02 ,  A61B3/00 ,  A61B3/14 ,  G02B27/00 ,  G01M11/02 ,  G02F1/1335 ,  G02F1/1362 ,  G01J9/00 ,  G02F1/01 ,  A61B3/10 ,  A61B3/13 ,  G01J1/42 ,  G02B27/09

CPC classification number: G02B27/0068 ,  A61B3/1015 ,  A61B3/13 ,  A61B3/14 ,  G01J1/42 ,  G01J9/00 ,  G01M11/02 ,  G01M11/0264 ,  G02B26/06 ,  G02B27/0927 ,  G02F1/01 ,  G02F1/0121 ,  G02F1/133553 ,  G02F1/136277 ,  G02F2201/346 ,  G02F2203/12 ,  G02F2203/18

Abstract: An adaptive optics system includes a spatial light modulator configured to spatially modulate a phase of an optical image incident on a modulation surface including N two-dimensionally arranged regions and a wavefront sensor including a lens array having N two-dimensionally arranged lenses corresponding to the N regions and an optical detection element for detecting a light intensity distribution including M converging spots formed by the lens array and configured to receive the optical image after the modulation from the spatial light modulator, and compensates for the wavefront distortion by controlling a phase pattern displayed in the spatial light modulator based on a wavefront shape of the optical image obtained from the light intensity distribution, wherein a correspondence relation between the region of the spatial light modulator and the converging spot formed in the wavefront sensor is specified while the compensation for the wavefront distortion is executed.

Abstract translation: 自适应光学系统包括：空间光调制器，被配置为空间调制入射在包括N个二维布置区域的调制表面上的光学图像的相位;以及波前传感器，其包括具有N个二维排列的透镜对应于N个 区域和光学检测元件，用于检测包括由透镜阵列形成的M个会聚点的光强度分布，并且被配置为从空间光调制器接收调制后的光学图像，并且通过控制显示的相位图案来补偿波阵面失真 基于从光强分布获得的光学图像的波前形状的空间光调制器，其中指定在波前传感器中形成的空间光调制器的区域与会聚点之间的对应关系，同时波前失真的补偿 被执行。

公开(公告)号：US08941903B2

公开(公告)日：2015-01-27

申请号：US13918225

申请日：2013-06-14

Applicant: Hamamatsu Photonics K.K.

Inventor： Yuu Takiguchi ,  Naoya Matsumoto ,  Norihiro Fukuchi ,  Takashi Inoue ,  Tamiki Takemori ,  Naohisa Mukozaka

IPC: G03H1/08 ,  H01S3/00 ,  B23K26/00 ,  B23K26/06 ,  G02B5/32 ,  G03H1/00 ,  G02B3/08 ,  G02B13/22 ,  G03H1/22

CPC classification number: H01S3/0085 ,  B23K26/06 ,  B23K26/352 ,  G02B3/08 ,  G02B5/32 ,  G02B13/22 ,  G03H1/0005 ,  G03H1/08 ,  G03H1/0808 ,  G03H1/2294 ,  G03H2001/0094 ,  G03H2225/32

Abstract: A laser processing apparatus including a laser light source, a phase modulation type spatial light modulator, a driving unit, a control unit, and an imaging optical system. A storage unit that is included in the driving unit stores a plurality of basic holograms corresponding to a plurality of basic processing patterns and a focusing hologram corresponding to a Fresnel lens pattern. The control unit arranges in parallel two or more basic holograms selected from the plurality of basic holograms stored in the storage unit, overlaps the focusing hologram with each of the basic holograms arranged in parallel to form the whole hologram, and presents the formed whole hologram to the spatial light modulator.

Abstract translation: 一种激光加工装置，包括激光光源，相位调制型空间光调制器，驱动单元，控制单元和成像光学系统。 包括在驱动单元中的存储单元存储对应于多个基本处理模式的多个基本全息图和对应于菲涅尔透镜图案的聚焦全息图。 控制单元平行布置从存储在存储单元中的多个基本全息图中选择的两个或多个基本全息图，与聚焦全息图重叠，每个基本全息图平行布置以形成整个全息图，并将形成的全息图呈现为 空间光调制器。

公开(公告)号：US12204182B2

公开(公告)日：2025-01-21

申请号：US18229909

申请日：2023-08-03

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Koyo Watanabe ,  Takashi Inoue

IPC: G06F17/14 ,  G02F1/01

Abstract: An iterative Fourier transform unit of a modulation pattern calculation apparatus performs a Fourier transform on a waveform function including an intensity spectrum function and a phase spectrum function, performs a replacement of a temporal intensity waveform function based on a desired waveform after the Fourier transform, and then performs an inverse Fourier transform. The iterative Fourier transform unit performs the replacement using a result of multiplying a function representing the desired waveform by a coefficient. The coefficient has a value with which a difference between the function after the multiplication of the coefficient and the temporal intensity waveform function after the Fourier transform is smaller than a difference before the multiplication, and a ratio of the difference is smaller when an intensity is higher at each time of the function before the multiplication.

公开(公告)号：US11762225B2

公开(公告)日：2023-09-19

申请号：US16732590

申请日：2020-01-02

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Koyo Watanabe ,  Takashi Inoue

IPC: G06F17/14 ,  G02F1/01

CPC classification number: G02F1/0121 ,  G06F17/148 ,  G02F2201/305

Abstract: An iterative Fourier transform unit of a modulation pattern calculation apparatus performs a Fourier transform on a waveform function including an intensity spectrum function and a phase spectrum function, performs a replacement of a temporal intensity waveform function based on a desired waveform after the Fourier transform, and then performs an inverse Fourier transform. The iterative Fourier transform unit performs the replacement using a result of multiplying a function representing the desired waveform by a coefficient. The coefficient has a value with which a difference between the function after the multiplication of the coefficient and the temporal intensity waveform function after the Fourier transform is smaller than a difference before the multiplication, and a ratio of the difference is smaller when an intensity is higher at each time of the function before the multiplication.

公开(公告)号：US11079618B2

公开(公告)日：2021-08-03

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 ,  G02B5/30 ,  H04N5/232

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.

公开(公告)号：US11022938B2

公开(公告)日：2021-06-01

申请号：US16270968

申请日：2019-02-08

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Koyo Watanabe ,  Takashi Inoue

IPC: G03H1/16 ,  G03H1/08 ,  G05B15/02

Abstract: A data generating device sets an initial candidate solution of an intensity spectrum function, a phase spectrum function, and an initial temperature and a cooling rate, generates a neighborhood solution, transforms a first waveform function of a frequency domain including the neighborhood solution and the phase spectrum function into a second waveform function of a time domain including a time-intensity waveform function and a time-phase waveform function and calculates an evaluation value representing a degree of difference between the time-intensity waveform function and the desired time-intensity waveform, sets the neighborhood solution as an n-th candidate solution for a certain probability, and lowers the temperature on the basis of the cooling rate. A decrease in the temperature acts in a direction in which the probability P is lowered when the evaluation value of the neighborhood solution is worse than the evaluation value of the candidate solution.

公开(公告)号：US10082720B2

公开(公告)日：2018-09-25

申请号：US15696432

申请日：2017-09-06

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Hisanari Takahashi ,  Yoichi Kawada ,  Takashi Inoue ,  Koyo Watanabe ,  Koji Takahashi ,  Hironori Takahashi

IPC: G02F1/35 ,  G02F1/355

CPC classification number: G02F1/353 ,  G02F1/3551 ,  G02F2001/3548 ,  G02F2201/34 ,  G02F2202/20 ,  G02F2203/13

Abstract: A wavelength conversion element includes a crystal having a periodically poled structure in which polarization is inverted with an inversion period Λ along a z-axis which is an input axis of a light pulse. The wavelength conversion element is configured to generate an output the inversion period Λ(x) at each position x by change of the inversion period Λ according to the position x, and when a target frequency linearly changing with the position x is set to fT(x)=b+ax, a frequency width of the output frequency is set to δf(x), and the output frequency is set to f(x)=fT(x)+α(x), the output frequency is set to coincide with the target frequency within a range satisfying a condition |α(x)|≤δf(x).

公开(公告)号：US09995923B2

公开(公告)日：2018-06-12

申请号：US15164052

申请日：2016-05-25

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Koyo Watanabe ,  Takashi Inoue

IPC: G02B21/36 ,  G02B21/06 ,  G02F1/01

CPC classification number: G02B21/365 ,  G02B21/06 ,  G02F1/0121

Abstract: A control apparatus includes a lens, an SLM presenting a modulation pattern on a modulation plane and outputting modulated light L2 for forming light spots P1 and P2 on a pupil plane of the lens, an imaging device imaging a fringe pattern image formed on a focal plane of the lens and generating image data Da indicating the fringe pattern image, a calculation unit calculating at least one kind of parameter among an intensity amplitude, a phase shift amount, and an intensity average from the image data Da, an analysis unit obtaining a deviation in relative positions of an optical axis of the lens and a reference coordinate of the modulation plane based on the parameter, and a changing unit changing an origin position of the reference coordinate so that the deviation in the relative positions is decreased.