公开(公告)号：US20200292856A1

公开(公告)日：2020-09-17

申请号：US16769321

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 ,  G01N21/64

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 an adhesive layer for fixing the substrate to the rear surface and being disposed on the rear surface of the electro-optic crystal, and a drive circuit applying an electric field between the first electrode and the plurality of second electrodes.

公开(公告)号：US20190302488A1

公开(公告)日：2019-10-03

申请号：US16307527

申请日：2017-06-05

Applicant: HAMAMATSU PHOTONICS K.K.

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

IPC: G02F1/03 ,  G02F1/33 ,  G09G3/36 ,  G02B26/08

Abstract: A reflective spatial light modulator includes a perovskite-type electro-optic crystal having a relative permittivity of 1,000 or higher, a light input and output unit disposed on an input surface of the electro-optic crystal and including a first electrode through which input light is transmitted, a light reflecting unit including a plurality of second electrodes disposed on a rear surface of the electro-optic crystal and reflects the input light toward the light input and output unit, a drive circuit including a plurality of drive electrodes respectively corresponding to the plurality of second electrodes and for applying an electric field to a part between the first electrode and the second electrode by inputting an electrical signal to each of the plurality of drive electrodes, and a plurality of bumps which are disposed such that the plurality of second electrodes and the plurality of drive electrodes are electrically connected to each other.

公开(公告)号：US20240004225A1

公开(公告)日：2024-01-04

申请号：US18367614

申请日：2023-09-13

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Hiroto SAKAI ,  Munenori TAKUMI ,  Hiroshi TANAKA

IPC: G02F1/01 ,  G02F1/29 ,  G03H1/22

CPC classification number: G02F1/01 ,  G02F1/29 ,  G03H1/2294

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：US20230317309A1

公开(公告)日：2023-10-05

申请号：US18019874

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: G21K1/00

CPC classification number: G21K1/006

Abstract: A quantum simulator includes a chamber, a light beam generation apparatus, and a photodetector. The light beam generation apparatus includes a light source, an optical mask, a spatial light modulator, and a lens. The optical mask includes an inner region having a rectangular shape with a side parallel to a first direction or a second direction, and an outer region surrounding the inner region. 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：US20230258951A1

公开(公告)日：2023-08-17

申请号：US18014500

申请日：2021-06-16

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tsubasa WATANABE ,  Hiroto SAKAI ,  Yasushi OHBAYASHI

IPC: G02B27/10 ,  G02B27/00 ,  G02B5/28 ,  G02B27/09

CPC classification number: G02B27/1026 ,  G02B27/0012 ,  G02B5/28 ,  G02B27/095

Abstract: An optical apparatus includes an optical system for outputting parallel light, and an angle filter disposed on an optical path of the parallel light output from the optical system. The angle filter includes a dielectric multilayer film in which dielectric layers having a first refractive index n1 and dielectric layers having a second refractive index n2 lower than the first refractive index n1 are alternately stacked.

公开(公告)号：US20190302492A1

公开(公告)日：2019-10-03

申请号：US16307517

申请日：2017-06-05

Applicant: HAMAMATSU PHOTONICS K.K.

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

IPC: G02F1/03 ,  G02B21/16 ,  G01N21/64 ,  G02B21/06

Abstract: A light modulator includes a perovskite-type electro-optic crystal including a first surface to which the input light is input and a second surface which faces the first surface; a first electrode which is disposed on the first surface of the electro-optic crystal and through which the input light is transmitted; a second electrode which is disposed on the second surface of the electro-optic crystal and through which the input light is transmitted; and a drive circuit for applying an electric field between the first electrode and the second electrode. The first electrode is disposed alone on the first surface. The second electrode is disposed alone on the second surface. At least one of the first electrode and the second electrode partially covers the first surface or the second surface. A propagation direction of the input light and an applying direction of the electric field are parallel to each other.

公开(公告)号：US20190196164A1

公开(公告)日：2019-06-27

申请号：US16307511

申请日：2017-06-05

Applicant: HAMAMATSU PHOTONICS K.K.

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

IPC: G02B21/00 ,  G02F1/03 ,  H04N5/225

CPC classification number: G02B21/0032 ,  G02B21/00 ,  G02F1/03 ,  H04N5/2258

Abstract: A reflective spatial light modulator includes a perovskite-type electro-optic crystal having a relative permittivity of 1,000 or higher and including an input surface to which the input light is input and a rear surface which faces the input surface; a light input and output unit disposed on the input surface of the electro-optic crystal and including a first electrode through which the input light is transmitted; a light reflecting unit including a pixel electrode portion including a plurality of second electrodes and an adhesion layer fixing the pixel electrode portion to the rear surface, is disposed on the rear surface of the electro-optic crystal, and reflects the input light toward the input and output unit; and a drive circuit for applying an electric field between the first electrode and the plurality of second electrodes. The adhesion layer includes a dielectric material in a cured material of a non-conducting adhesive material.

公开(公告)号：US20190154897A1

公开(公告)日：2019-05-23

申请号：US16307518

申请日：2017-06-05

Applicant: HAMAMATSU PHOTONICS K.K.

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

IPC: G02B5/30 ,  G02F1/03

Abstract: An optical element includes an electro-optic crystal having an isotropic crystal which belongs to a point group m3m of a cubic system and including an input surface to which input light is input and a rear surface which is a surface on the opposite side of the input surface; a first electrode disposed on the input surface; and a second electrode disposed on the rear surface. The input surface is located along at least one axis between axes obtained by rotating two crystal axes about one remaining crystal axis used as a rotation center at a predetermined angle in three crystal axes of the electro-optic crystal. A direction of an electric field to be induced by a voltage applied to a part between the first electrode and the second electrode is set in a propagation direction of the input light.