公开(公告)号：US20220240768A1

公开(公告)日：2022-08-04

申请号：US17615728

申请日：2020-09-25

Applicant: HOYA CORPORATION

Inventor： Toshiki WATANABE ,  Yoshiyuki NIIJIMA

IPC: A61B1/06 ,  A61B1/05 ,  A61B1/07 ,  A61B1/00

Abstract: An endoscope includes: an imaging unit that is incorporated in a distal tip of an insertion tube and images an observed site through an observation window; a plurality of first LEDs juxtaposed outside the imaging unit; and a plurality of second LEDs juxtaposed outside a region where the first LEDs are juxtaposed. The region where the first LEDs are juxtaposed and a region where the second LEDs are juxtaposed are covered with a light distribution lens, light emission of the first LED is output to an angular range smaller than a viewing angle of the imaging unit through the light distribution lens, and light emission of the second LED is output to an angular range smaller than the viewing angle of the imaging unit through the light distribution lens.

公开(公告)号：US20230319386A1

公开(公告)日：2023-10-05

申请号：US18024578

申请日：2021-09-22

Applicant: HOYA CORPORATION

Inventor： Yoshihiro HAYASHI ,  Yoshiyuki NIIJIMA ,  Yukari AKINO ,  Shinya SHIMOTASHIRO

IPC: H04N23/50 ,  H04N23/73 ,  H04N23/56

CPC classification number: H04N23/555 ,  H04N23/73 ,  H04N23/56

Abstract: A light source device that generates illumination light, the light source device including: a plurality of semiconductor light emitting elements that emit light beams having different wavelength bands; and a control unit that controls a light emission profile of the plurality of semiconductor light emitting elements and drives the plurality of semiconductor light emitting elements, in which the light emission profile includes a strong light emission period in which light emission is performed with a predetermined light intensity and a weak light emission period in which light emission is performed with a light intensity weaker than the predetermined light intensity, and the control unit executes a restoration control process of converting into a light emission amount in the strong light emission period while maintaining a total amount of the light emission amount in the strong light emission period and the light emission amount in the weak light emission period constant.

公开(公告)号：US20230363630A1

公开(公告)日：2023-11-16

申请号：US18029738

申请日：2021-11-04

Applicant: HOYA CORPORATION

Inventor： Yoshihiro HAYASHI ,  Yoshiyuki NIIJIMA ,  Yukari AKINO ,  Shinya SHIMOTASHIRO

IPC: A61B1/06 ,  A61B1/00

CPC classification number: A61B1/0684 ,  A61B1/0655 ,  A61B1/00009 ,  A61B1/0638 ,  A61B1/0676 ,  A61B1/00045

Abstract: A light source device according to the present disclosure is a light source device that generates illumination light with which an object is to be irradiated, the light source device including: a plurality of semiconductor light emitting elements configured to emit light having different wavelength bands; and a control unit configured to control a light emission profile of the plurality of semiconductor light emitting elements and drive the plurality of semiconductor light emitting elements, in which the control unit extends the light emission profile in a first direction that is a direction opposite to a direction in which time progresses in a case of increasing an exposure level and shortens the light emission profile from a second direction that is the direction in which time progresses in a case of decreasing the exposure level.

公开(公告)号：US20230089085A1

公开(公告)日：2023-03-23

申请号：US17795011

申请日：2021-07-28

Applicant: HOYA CORPORATION

Inventor： Yoshiyuki NIIJIMA ,  Yoshihiro HAYASHI ,  Yukari AKINO ,  Shinya SHIMOTASHIRO

IPC: A61B1/06 ,  G02B23/26

Abstract: A light amount control unit of an endoscope derives a photometric value in an area of an observation spot corresponding to each of angular ranges of a first light output unit and a second light output unit having different wavelength ranges based on imaging data about the observation spot output from an imaging unit, derives an amount of light from each of the first light output unit and the second light output unit based on the derived photometric value, and causes each of the first light output unit and the second light output unit to output illumination light based on the derived amount of light.