公开(公告)号：US11444004B2

公开(公告)日：2022-09-13

申请号：US16806490

申请日：2020-03-02

Applicant: FUJI ELECTRIC CO., LTD. ,  WASEDA UNIVERSITY

Inventor： Ryoichi Kato ,  Yoshinari Ikeda ,  Hiromichi Gohara ,  Tomoyuki Miyashita ,  Shingo Otake

IPC: H01L23/34 ,  H01L23/473 ,  H05K7/20 ,  F28F3/02 ,  H01L23/373 ,  H01L23/40

Abstract: A cooler of the present invention is provided with a case having a top plate, a bottom plate, and a side plate, cooling fins disposed inside the case, and a flow path for cooling fluid that comes into contact with the cooling fins and that flows through the interior of the case, the cooler cooling an object to be cooled in contact with the top plate or the bottom plate. The cooling fins have a shaft part and vane parts that protrude outward from the shaft part and extend spirally in the axial direction; the overall cooling fin configuration constituting a quadrangular column shape. The cooling fins are disposed in contact with at least the top plate and the bottom plate, and the flow path has a spiral-formed configuration formed by the vane parts, the top plate, and the bottom plate.

公开(公告)号：US20220175242A1

公开(公告)日：2022-06-09

申请号：US17599069

申请日：2020-03-26

Applicant: WASEDA UNIVERSITY

Inventor： Hiroyasu Iwata ,  Ryoichi Kato ,  Kazuhiro Yasuda

IPC: A61B3/024 ,  H04N13/398 ,  A61B3/08 ,  A61B3/00

Abstract: A visual perception function evaluation system 10 includes: a display device 12 configured to three-dimensionally display a three-dimensional test image 20 including an object 22 to a subject; a processing device 13 connected to the display device 12; and an input device 11 through which a reply related to whether the object 22 can be perceived is input from the subject to the processing device 13. The processing device 13 includes a display control means 15 for controlling the state of display of the test image 20 on the display device 12, and a neglect region specifying means 16 for specifying a neglect region in a three-dimensional space based on the reply. The display control means 15 controls display so that the three-dimensional position of a display point P varies over time. The neglect region specifying means 16 determines three-dimensional position information on a boundary part between a perception region and the neglect region based on a position of the display point P where it is replied that the object 22 cannot be perceived and an adjacent position of the display point P where it is replied that the object 22 can be perceived.

公开(公告)号：US11075144B2

公开(公告)日：2021-07-27

申请号：US16944345

申请日：2020-07-31

Applicant: FUJI ELECTRIC CO., LTD. ,  WASEDA UNIVERSITY

Inventor： Ryoichi Kato ,  Hiromichi Gohara ,  Yoshinari Ikeda ,  Tomoyuki Miyashita ,  Yoshihiro Tateishi ,  Shunsuke Numata

IPC: H01L23/473 ,  H01L23/498

Abstract: Provided is a cooler having high cooling efficiency and low pressure loss of fluid. A cooler includes: a flow-channel part at least including a plate-like fin (top plate) and a plate-like fin (bottom plate); and a continuous groove-like flow channel defined between the top plate and the bottom plate to flow fluid, the cooler being configured to cool semiconductor elements. When the flow-channel part is viewed from the direction parallel to the top plate and intersecting the flow channel, the flow channel has a corrugated shape so that a face of the flow channel closer to the top plate and a face of the flow channel closer to the bottom plate bend in a synchronized manner toward the top plate and the bottom plate.