公开(公告)号：US20200041810A1

公开(公告)日：2020-02-06

申请号：US16603906

申请日：2018-03-26

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Hiroto SAKAI ,  Taro ANDO ,  Haruyoshi TOYODA ,  Yoshiyuki OHTAKE ,  Yuu TAKIGUCHI ,  Tomoko HYODO

IPC: G02B27/48 ,  G03H1/12 ,  G02B21/06 ,  G06F7/58

Abstract: A pseudo speckle pattern generation apparatus includes a light source, a beam expander, and a spatial light modulator. The spatial light modulator has an intensity modulation distribution based on a pseudo speckle pattern calculated from a pseudo random number pattern and a correlation function, receives light output from the light source and increased in beam diameter by the beam expander, spatially modulates the received light according to the modulation distribution, and outputs modulated light.

公开(公告)号：US20170363876A1

公开(公告)日：2017-12-21

申请号：US15544935

申请日：2016-01-12

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Hiroto SAKAI ,  Yuu TAKIGUCHI

IPC: G02B27/09 ,  G03H1/08 ,  G03H1/00 ,  G03H1/22

Abstract: A light irradiation device includes a Gaussian beam output unit for outputting light having a light intensity distribution that conforms to a Gaussian distribution, a spatial light modulator for receiving the light and modulating the light by presenting a CGH, an optical system for converging the modulated light, and an amplitude mask arranged on at least one of an optical axis between the Gaussian beam output unit and the spatial light modulator and an optical axis between the spatial light modulator and the optical system. The amplitude mask has a circular-shaped first region centered on the optical axis and an annular-shaped second region that surrounds the first region. Transmittance in the second region continuously decreases as a distance from the optical axis increases.

公开(公告)号：US20170269387A1

公开(公告)日：2017-09-21

申请号：US15456760

申请日：2017-03-13

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Hiroto SAKAI ,  Yasushi OHBAYASHI

IPC: G02F1/01 ,  G02F1/29 ,  G02F1/09 ,  G02F1/25

Abstract: An optical module includes: first and second optical elements; third and fourth optical elements; a first polarization control element and a first reflective light modulator that are sequentially arranged in one of a positive direction of a first vector and a negative direction of a second vector from the second optical element; a second polarization control element and a second reflective light modulator that are sequentially arranged in one of a negative direction of the first vector and a positive direction of the second vector from the third optical element; and a sliding mechanism that relatively moves the first and second optical elements and the third and fourth optical elements in the direction of the first vector relative.

公开(公告)号：US20230101292A1

公开(公告)日：2023-03-30

申请号：US18076721

申请日：2022-12-07

Applicant: Hamamatsu Photonics K.K.

Inventor： Hiroto SAKAI ,  Taro ANDO ,  Haruyoshi TOYODA ,  Yoshiyuki OHTAKE ,  Yuu TAKIGUCHI ,  Tomoko HYODO

IPC: G06F7/58 ,  G02B27/48 ,  G03H1/16 ,  G02B21/06 ,  G03H1/12

Abstract: A pseudo speckle pattern generation apparatus includes a light source, a beam expander, and a spatial light modulator. The spatial light modulator has an intensity modulation distribution based on a pseudo speckle pattern calculated from a pseudo random number pattern and a correlation function, receives light output from the light source and increased in beam diameter by the beam expander, spatially modulates the received light according to the modulation distribution, and outputs modulated light.

公开(公告)号：US20210191165A1

公开(公告)日：2021-06-24

申请号：US16769339

申请日：2017-12-05

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Kuniharu TAKIZAWA ,  Hiroshi TANAKA ,  Haruyoshi TOYODA ,  Yasushi OHBAYASHI ,  Hiroto SAKAI ,  Tsubasa WATANABE

IPC: G02F1/03

Abstract: A light modulator includes a perovskite-type electro-optic crystal having an input surface to which input light is input and a rear surface opposing the input surface, a first optical element being disposed on the input surface of the electro-optic crystal and having a first electrode through which the input light is transmitted, a second optical element being disposed on the rear surface of the electro-optic crystal and having a second electrode through which the input light is transmitted, and a drive circuit applying an electric field between the first electrode and the second electrode.

公开(公告)号：US20200326564A1

公开(公告)日：2020-10-15

申请号：US16769327

申请日：2017-12-05

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Kuniharu TAKIZAWA ,  Hiroshi TANAKA ,  Haruyoshi TOYODA ,  Yasushi OHBAYASHI ,  Hiroto SAKAI ,  Tsubasa WATANABE

IPC: G02F1/03

Abstract: A reflective spatial light modulator includes an electro-optic crystal having an input surface to which input light is input and a rear surface opposing the input surface, a light input/output unit being disposed on the input surface of the electro-optic crystal and having a first electrode through which the input light is transmitted, a light reflection unit including a substrate including a plurality of second electrodes and being disposed on the rear surface side of the electro-optic crystal, and a drive circuit applying an electric field between the first electrode and the plurality of second electrodes. The light input/output unit includes a first charge injection curbing layer formed on the input surface, and the light reflection unit includes a second charge injection curbing layer formed on the rear surface.

公开(公告)号：US20180292786A1

公开(公告)日：2018-10-11

申请号：US15945016

申请日：2018-04-04

Applicant: HAMAMATSU PHOTONICS K.K. ,  INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES

Inventor： Hiroto SAKAI ,  Kenji OHMORI ,  Taro ANDO ,  Nobuyuki TAKEI ,  Haruyoshi TOYODA ,  Yoshiyuki OHTAKE ,  Tomoko HYODO ,  Yuu TAKIGUCHI

IPC: G03H1/16 ,  G03H1/04 ,  G03H1/00

Abstract: A quantum simulator includes a pseudo speckle pattern generator, a main vacuum chamber, an atomic gas supply unit, a light beam generator, a photodetector, and an atom number detector. The pseudo speckle pattern generator generates a pseudo speckle pattern in the inside of the main vacuum chamber by light allowed to enter the inside of the main vacuum chamber through the second window. The pseudo speckle pattern generator includes a controller, a light source, a beam expander, a spatial light modulator, and a lens. The controller sets a modulation distribution of the spatial light modultor based on a two-dimensional pseudo random number pattern.

公开(公告)号：US20210048692A1

公开(公告)日：2021-02-18

申请号：US16977397

申请日：2019-02-07

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Hiroto SAKAI ,  Munenori TAKUMI ,  Hiroshi TANAKA

IPC: G02F1/01 ,  G03H1/22 ,  G02F1/29

Abstract: An SLM includes a modulation unit and a driving circuit. The modulation unit includes a plurality of pixels, and modulates a phase or an intensity of incident light in each pixel according to an amplitude of a drive signal changing periodically with time. The driving circuit provides the drive signal to the modulation unit. The driving circuit performs control such that a phase of the drive signal V1(t) provided to a first pixel group in the plurality of pixels and a phase of the drive signal V2(t) provided to a second pixel group in the plurality of pixels are mutually inverted.

公开(公告)号：US20230281498A1

公开(公告)日：2023-09-07

申请号：US18019909

申请日：2021-08-24

Applicant: HAMAMATSU PHOTONICS K.K. ,  INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES

Inventor： Hiroto SAKAI ,  Kenji OHMORI ,  Taro ANDO ,  Sylvain DE LÉSÉLEUC ,  Takafumi TOMITA ,  Seiji SUGAWA ,  Yoshiyuki OHTAKE ,  Haruyoshi TOYODA

IPC: G06N10/40 ,  G06N10/20

CPC classification number: G06N10/40 ,  G06N10/20

Abstract: A quantum simulator includes a chamber, a light beam generation apparatus, and a photodetector. The light beam generation apparatus includes a light source, a spatial light modulator, and a lens. Each of pixels of the spatial light modulator has a rectangular shape with a side parallel to a first direction or a second direction, and the pixels are arranged at regular intervals along the first direction and the second direction. When an xy coordinate system including an x axis parallel to the first direction and a y axis parallel to the second direction is set on an image plane, the light beam generation apparatus forms and regularly arranges focusing spots such that a minimum value of a difference between x coordinate values and a minimum value of a difference between y coordinate values of center positions of the focusing spots are longer than a non-overlapping distance.

公开(公告)号：US20230280515A1

公开(公告)日：2023-09-07

申请号：US18015346

申请日：2021-06-16

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tsubasa WATANABE ,  Hiroto SAKAI ,  Yasushi OHBAYASHI

IPC: G02B5/28

CPC classification number: G02B5/285 ,  G02B1/11

Abstract: An optical apparatus includes an angle filter disposed on an optical path in the middle of focusing or in the middle of divergence by a focusing optical element. The angle filter includes a dielectric multilayer film in which dielectric layers having a first refractive index and dielectric layers having a second refractive index lower than the first refractive index are alternately stacked.