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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
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.
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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.
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3.发明申请公开(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.
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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
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.
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5.发明申请公开(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
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.
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Patent Agency Ranking
6.发明申请公开(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
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.
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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
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.
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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
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.
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9.发明申请公开(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
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.
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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
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.
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