公开(公告)号：US11484192B2

公开(公告)日：2022-11-01

申请号：US16516485

申请日：2019-07-19

Applicant: OLYMPUS CORPORATION

Inventor： Atsuyoshi Shimamoto ,  Keiichiro Nakajima ,  Masashi Yamada ,  Takamitsu Sakamoto ,  Mitsuru Namiki ,  Mikihiko Terashima

IPC: A61B1/07 ,  A61B1/00 ,  G02B3/00

Abstract: An optical-scanning-type observation probe is provided with: an imaging optical system that illumination light scanned by an optical scanner enters and that focuses the illumination light in the form of a spot, multiple times; a projection optical system that emits illumination light coming from a focus position focused by the imaging optical system, toward a subject in the form of a spot; and a light-receiver that is provided independently of the imaging optical system and the projection optical system and that receives reflected light of the illumination light, the reflected light coming from the subject, via a light path different from that of the imaging optical system and the projection optical system.

公开(公告)号：US10704953B2

公开(公告)日：2020-07-07

申请号：US16352046

申请日：2019-03-13

Applicant: Olympus Corporation

Inventor： Keiichiro Nakajima

IPC: H04N5/347 ,  H01L27/146 ,  G01J1/44 ,  H04N9/64 ,  H04N5/3745

Abstract: The disclosed technology is directed to a light detecting apparatus used in an image acquiring apparatus. The image acquiring apparatus comprises a light receiving element that outputs a current according to a light amount of incident light. A current-voltage conversion circuit converts the current output from the light receiving element to a voltage signal. The current-voltage conversion circuit includes an operational amplifier and feedback resistance, feedback capacitance, and at least one diode that are connected in parallel between an inverting terminal and an output terminal of the operational amplifier. The diode is connected to have a forward direction from the inverting terminal toward the output terminal, and following conditional expressions are satisfied, G=Rf B=1/(2πRf(Cf+Cd/n)) and Vpr>n×Vf>G×Imax.

公开(公告)号：US11931004B2

公开(公告)日：2024-03-19

申请号：US17137574

申请日：2020-12-30

Applicant: OLYMPUS CORPORATION

Inventor： Takehiro Miki ,  Keiichiro Nakajima ,  Mitsuru Namiki

IPC: A61B1/00 ,  G02B9/06 ,  G02B9/58 ,  G02B23/24

CPC classification number: A61B1/0019 ,  A61B1/00195 ,  G02B9/06 ,  G02B9/58 ,  G02B23/243

Abstract: Provided is an objective optical system including: a first spherical lens and a second spherical lens that are arrayed in this order from an object; and at least one of a first optical medium and a second optical medium, wherein the first optical medium is a solid or liquid disposed at an object side of the first spherical lens and is in close contact with a surface on the object side of the first spherical lens, over an entire optical path; and the second optical medium is a solid or liquid disposed at an opposite side of the second spherical lens from the object and is in close contact with a surface on the opposite side of the second spherical lens from the object, over the entire optical path.

公开(公告)号：US10609297B2

公开(公告)日：2020-03-31

申请号：US15382848

申请日：2016-12-19

Applicant: OLYMPUS CORPORATION

Inventor： Keiichiro Nakajima

IPC: A61B1/06 ,  A61B1/07 ,  H04N5/235 ,  G02B23/26 ,  H04N3/02 ,  A61B1/00 ,  G02B23/24 ,  H04N5/225 ,  H04N5/378

Abstract: The disclosed optical scanning endoscope apparatus includes a scanner that scans an object with illumination light from a light source, a light amount detector that detects a light amount of the illumination light from the light source, and a controller that controls output of the light source based on the light amount detected by the light amount detector. The controller controls the output of the light source based on an integral value of the light amount detected by the light amount detector during an immediately prior predetermined period.

公开(公告)号：US10568495B2

公开(公告)日：2020-02-25

申请号：US15846537

申请日：2017-12-19

Applicant: OLYMPUS CORPORATION

Inventor： Masashi Yamada ,  Atsuyoshi Shimamoto ,  Mitsuru Namiki ,  Keiichiro Nakajima ,  Takamitsu Sakamoto ,  Mikihiko Terashima ,  Yoko Okabe ,  Yu Kondo

IPC: A61B1/04 ,  A61B1/07 ,  H04N5/235 ,  G02B23/24 ,  G02B26/10 ,  A61B1/00 ,  A61B1/06 ,  H04N9/04 ,  A61B1/317 ,  H04N5/225 ,  H04N5/33

Abstract: Provided is a scanning endoscope system including: an illumination-light emitting portion that is inserted into a body of a patient and that emits illumination light emitted from a light-source portion toward an imaging subject in the body in a spot-like manner; a light scanner that scans the illumination light on the imaging subject; and a light detector that is disposed at a body surface of the patient, and that detects reflected light coming from the scanning position in the imaging subject, at which the illumination light is scanned by the light scanner.

公开(公告)号：US20190212193A1

公开(公告)日：2019-07-11

申请号：US16352046

申请日：2019-03-13

Applicant: Olympus Corporation

Inventor： Keiichiro Nakajima

IPC: G01J1/44 ,  H04N9/64

Abstract: The disclosed technology is directed to a light detecting apparatus used in an image acquiring apparatus. The image acquiring apparatus comprises a light receiving element that outputs a current according to a light amount of incident light. A current-voltage conversion circuit converts the current output from the light receiving element to a voltage signal. The current-voltage conversion circuit includes an operational amplifier and feedback resistance, feedback capacitance, and at least one diode that are connected in parallel between an inverting terminal and an output terminal of the operational amplifier. The diode is connected to have a forward direction from the inverting terminal toward the output terminal, and following conditional expressions are satisfied, G=Rf B=1/(2πRf(Cf+Cd/n)) and Vpr>n×Vf>G×Imax.