公开(公告)号：US20240332323A1

公开(公告)日：2024-10-03

申请号：US18610629

申请日：2024-03-20

Applicant: TDK Corporation

Inventor： Takekazu YAMANE ,  Tetsuya SHIBATA ,  Takeshi NOJIRI ,  Weihao ZHANG ,  Hideaki FUKUZAWA

IPC: H01L27/144 ,  H01L31/02 ,  H01L31/032

CPC classification number: H01L27/1443 ,  H01L31/02005 ,  H01L31/032

Abstract: An optical detection device includes first photoelectric conversion element that outputs first output when first photoelectric conversion element is irradiated with light pulse, and second photoelectric conversion element that outputs second output when second photoelectric conversion element is irradiated with light pulse. The optical detection device is configured to combine first signal caused by first output and second signal caused by second output when first photoelectric conversion element and second photoelectric conversion element are irradiated with same light pulse each other, in a state where first condition and second condition are satisfied. The first condition is condition that time position of peak of first signal is different from time position of peak of second signal. The second condition is condition that sign of amount of change until the first signal reaches the peak is different from a sign of the amount of change until the second signal reaches the peak.

公开(公告)号：US20250102705A1

公开(公告)日：2025-03-27

申请号：US18891263

申请日：2024-09-20

Applicant: TDK Corporation

Inventor： Tomohito MIZUNO ,  Hideaki FUKUZAWA ,  Tetsuya SHIBATA ,  Tsuyoshi KOMAKI ,  Takeshi NOJIRI

IPC: G02B1/00 ,  G02B27/01 ,  G02B27/18

Abstract: A metasurface reflector includes: a first metal layer and a second metal layer stacked in a first direction; a dielectric layer provided between the first metal layer and the second metal layer in the first direction; and a protective layer covering a surface of the second metal layer opposite to the dielectric layer. The dielectric layer includes a main surface on which the second metal layer is provided. The metasurface reflector is divided into a plurality of unit regions arranged in a second direction along the main surface and in a third direction along the main surface and intersecting the second direction. The second metal layer includes metal units respectively provided in all or some of the plurality of unit regions. The protective layer is made of a metal having a standard electrode potential higher than that of a metal constituting the second metal layer.

公开(公告)号：US20230341260A1

公开(公告)日：2023-10-26

申请号：US18079388

申请日：2022-12-12

Applicant: TDK CORPORATION

Inventor： Takeshi NOJIRI ,  Hideaki FUKUZAWA ,  Tetsuya SHIBATA ,  Tomohito MIZUNO ,  Susumu AOKI

IPC: G01J1/42 ,  H10N50/80 ,  G02B6/42

CPC classification number: G01J1/4257 ,  H01L43/02 ,  G02B6/4298

Abstract: The light detection element includes a magnetic element and an optical waveguide. The magnetic element includes a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer. The optical waveguide includes at least a core and a cladding covering at least a part of the core. Light that has propagated through the optical waveguide is applied to the magnetic element.