公开(公告)号：US10646103B2

公开(公告)日：2020-05-12

申请号：US15692457

申请日：2017-08-31

Applicant: OLYMPUS CORPORATION

Inventor： Yutaka Shirota ,  Masaaki Watanabe ,  Takahiro Hayama ,  Ayuko Kumada

IPC: A61B1/00 ,  A61B1/06 ,  A61B1/04 ,  A61B1/045 ,  A61B1/05 ,  G02B23/26

Abstract: A drive device includes a filter section that includes an optical filter, a transmission section that rotates around a rotation shaft, a first groove portion that is formed to the transmission section, a protruding portion that is formed to the filter section, in contact with the first groove portion, and that moves the filter section from a first position to a second position by moving along the first groove portion in coordination with rotation of the transmission section, and a second groove portion that is formed continuously with the first groove portion, and that is provided along a tangent line direction passing through the protruding portion that is on a circle having the rotation shaft of the transmission section at a center and a radius that is a distance between the rotation shaft and the protruding portion, when the optical filter section is moved to the second position.

公开(公告)号：US10725283B2

公开(公告)日：2020-07-28

申请号：US15786731

申请日：2017-10-18

Applicant: OLYMPUS CORPORATION

Inventor： Yusuke Yoshida ,  Yutaka Shirota ,  Masaaki Watanabe

IPC: G02B23/24 ,  A61B1/06 ,  G02B23/26 ,  A61B1/00 ,  A61B1/04 ,  A61B1/12

Abstract: An optical sensor that detects intensity of light is disposed, inside an optical case, at a position that allows the optical sensor to receive light other than light received by a lens system, out of light emitted by an LED. The optical sensor is housed in a dedicated photometric case. The photometric case is provided with a light guide portion that includes a transmission part and a shielding part. The transmission part is disposed in an optical path of light that directly travels from the LED to the optical sensor and allows transmission of the light. The shielding part blocks indirect light that is reflected or scattered inside the optical case, from entering the optical sensor. Accordingly, it is possible to accurately detect only the light in the direct optical path from the LED.

公开(公告)号：US10092174B2

公开(公告)日：2018-10-09

申请号：US15238285

申请日：2016-08-16

Applicant: OLYMPUS CORPORATION

Inventor： Yutaka Shirota ,  Takahiro Masaki

IPC: A61B1/00 ,  A61B1/06 ,  A61B1/12 ,  G02B23/24 ,  H01L23/467 ,  H05K7/20 ,  F21V29/60 ,  F21V29/503 ,  F21V29/67

Abstract: A cooling device according to the invention includes: a first flow channel configured so that a coolant passes; a first heat receiving portion; a first heat radiating portion arranged in the first flow channel; a first heat transferring portion configured to transfer heat from the first heat receiving portion to the first heat radiating portion; a second flow channel configured so that the coolant passes; a second heat receiving portion; a second heat radiating portion arranged in the second flow channel; and a second heat transferring portion configured having a longer length than the first heat transferring portion and transferring heat from the second heat receiving portion to the second heat radiating portion. The second heat radiating portion is configured having a larger surface area than the first heat radiating portion.

公开(公告)号：US10085630B2

公开(公告)日：2018-10-02

申请号：US15142507

申请日：2016-04-29

Applicant: OLYMPUS CORPORATION

Inventor： Yutaka Shirota ,  Tomoya Takahashi ,  Masato Toda ,  Yusuke Yabe ,  Yusuke Yoshida ,  Aiko Sakai ,  Takahiro Masaki ,  Takahiro Hayama ,  Ryo Machida ,  Koji Omori

IPC: A61B1/06 ,  A61B1/12 ,  G02B23/24 ,  G02B27/14 ,  A61B1/00 ,  A61B1/04 ,  A61B1/07 ,  H01L33/64

Abstract: An endoscope apparatus includes: first and second cooling units configured to cool first and second light source portions; an image pickup portion configured to generate a picked-up image; and a cooling control portion configured to control amounts of light emission of the light source portions while maintaining an amount-of-light ratio so that the brightness of the picked-up image becomes the target brightness and control cooling based on the information about the amount-of-light ratio and the brightness control information; wherein the cooling control portion decides a cooling capacity of the first cooling units and a cooling capacity of the second cooling units for cooling the respective light source portions for which the amounts of light emission are controlled, at the cooling ratio, so as to cause the light source portions to be included within a predetermined temperature range, based on the brightness control information.

公开(公告)号：US09826894B2

公开(公告)日：2017-11-28

申请号：US15011882

申请日：2016-02-01

Applicant: OLYMPUS CORPORATION

Inventor： Takahiro Masaki ,  Yusuke Yabe ,  Tomoya Takahashi ,  Masato Toda ,  Yutaka Shirota ,  Daisuke Akiyama ,  Koji Omori

IPC: A61B1/04 ,  A61B1/06 ,  G02B23/24 ,  A61B1/00 ,  G02B27/10

CPC classification number: A61B1/0684 ,  A61B1/00009 ,  A61B1/04 ,  A61B1/0638 ,  A61B1/0669 ,  G02B23/2461 ,  G02B27/1006

Abstract: An endoscope system including a control section that controls an LED driving section to supply driving currents to LEDs of a plurality of colors to cause the LEDs to emit lights in a frame-sequential manner and a processor that divides a total exposure period in one frame period of the frame-sequential light emission into ratios of light emission periods for each of the respective colors obtained by dividing light amount ratios of the lights of the plurality of colors, which should be received in a CCD, respectively by respective maximum light emission intensities of the LEDs of the plurality of colors and sets respective maximum light emission periods of the LEDs of the plurality of colors.