公开(公告)号：US20180231747A1

公开(公告)日：2018-08-16

申请号：US15954265

申请日：2018-04-16

Applicant: OLYMPUS CORPORATION

Inventor： Keisuke TAKADA ,  Yoshihiro UCHIDA

IPC: G02B13/04 ,  G02B9/12 ,  G02B13/00 ,  G02B1/04

CPC classification number: G02B13/04 ,  G02B1/041 ,  G02B9/12 ,  G02B13/0035

Abstract: An image pickup apparatus includes an optical system which includes a plurality of lenses, and an image sensor which is disposed at an image position of the optical system, wherein the optical system includes in order from an object side, a first lens having a negative refractive power, a second lens having a positive refractive power, an aperture stop, and a third lens, and each of the first lens, the second lens, and the third lens is formed of a material having a refractive index not higher than 1.70, and the following conditional expressions (1) and (2) are satisfied: 2.0

公开(公告)号：US20180224638A1

公开(公告)日：2018-08-09

申请号：US15946377

申请日：2018-04-05

Applicant: OLYMPUS CORPORATION

Inventor： Yoshihiro UCHIDA ,  Keisuke TAKADA

IPC: G02B13/04 ,  G02B13/18 ,  G02B9/12 ,  G02B13/00 ,  A61B1/04

CPC classification number: G02B13/04 ,  A61B1/00096 ,  A61B1/041 ,  B60Y2400/3015 ,  G02B9/12 ,  G02B13/0035 ,  G02B13/18 ,  G02B23/243

Abstract: An image pickup apparatus includes an optical system which includes a plurality of lenses, and an image sensor which is disposed at an image position of the optical system, wherein the optical system includes in order from an object side, a first lens having a negative refractive power, an aperture stop, a second lens having a positive refractive power, and a third lens having a positive refractive power, and each of the first lens, the second lens, and the third lens is formed of a material having a refractive index not higher than 1.70, and the following conditional expressions (1), (2), (3), and (4) are satisfied: 0

公开(公告)号：US20170363846A1

公开(公告)日：2017-12-21

申请号：US15674437

申请日：2017-08-10

Applicant: OLYMPUS CORPORATION

Inventor： Keisuke TAKADA

IPC: G02B15/20 ,  G02B23/24 ,  G02B15/167

CPC classification number: G02B15/20 ,  G02B9/60 ,  G02B13/002 ,  G02B13/0045 ,  G02B13/009 ,  G02B13/18 ,  G02B15/167 ,  G02B15/173 ,  G02B23/2438 ,  G02B27/0025

Abstract: A zoom image pickup apparatus includes a mount portion, a zoom lens which forms an image of light incident from the mount portion, and an image pickup element which is disposed at an image forming position, wherein the zoom lens includes in order from an object side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, a fourth lens unit having a negative refractive power, and a fifth lens unit having a positive refractive power, and the fourth lens unit is a focusing lens unit, and at the time of zooming from a wide angle end to a telephoto end, only the second lens unit and the fourth lens unit move, and the following conditional expression (1) is satisfied: φL1

公开(公告)号：US20190056572A1

公开(公告)日：2019-02-21

申请号：US16153463

申请日：2018-10-05

Applicant: OLYMPUS CORPORATION

Inventor： Keisuke TAKADA

IPC: G02B15/177 ,  G02B15/20 ,  H04N5/232 ,  G02B13/02 ,  G02B27/00

CPC classification number: G02B15/177 ,  G02B13/02 ,  G02B13/18 ,  G02B15/20 ,  G02B27/0062 ,  H04N5/23296

Abstract: A zoom lens includes in order from an object side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, a third lens unit having a negative refractive power, and a fourth lens unit having a positive refractive power. At the time of zooming, distances between lenses vary. A distance between the first lens unit and the second lens unit becomes smaller at a telephoto end than at a wide angle end, and a distance between the second lens unit and the third lens unit becomes longer at the telephoto end than at the wide angle end, and the following conditional expressions (1), (2), and (3) are satisfied: 0.4

公开(公告)号：US20170336594A1

公开(公告)日：2017-11-23

申请号：US15674430

申请日：2017-08-10

Applicant: OLYMPUS CORPORATION

Inventor： Keisuke TAKADA

IPC: G02B7/10 ,  G02B15/14

CPC classification number: G02B7/10 ,  G02B15/14 ,  G02B15/173

Abstract: A zoom image pickup apparatus includes a mount portion, a zoom lens which forms an image of light incident from the mount portion, and an image pickup element which is disposed at an image forming position. The zoom lens includes a plurality of lens unit, and a focusing lens unit, and the following conditional expressions (1) and (2) are satisfied: 1.5

公开(公告)号：US20180224637A1

公开(公告)日：2018-08-09

申请号：US15946336

申请日：2018-04-05

Applicant: OLYMPUS CORPORATION

Inventor： Yoshihiro UCHIDA ,  Keisuke TAKADA

IPC: G02B13/04 ,  G02B13/18 ,  G02B9/34 ,  G02B13/00 ,  A61B1/04

CPC classification number: G02B13/04 ,  A61B1/00096 ,  A61B1/041 ,  B60Y2400/3015 ,  G02B9/34 ,  G02B13/004 ,  G02B13/18 ,  G02B23/243

Abstract: An image pickup apparatus includes an optical system which includes a plurality of lenses, and an image sensor which is disposed at an image position of the optical system, wherein the optical system includes in order from an object side, a first lens having a negative refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, and a fourth lens, and the following conditional expressions (1) and (2) are satisfied: α max−α min

公开(公告)号：US20180095247A1

公开(公告)日：2018-04-05

申请号：US15718986

申请日：2017-09-28

Applicant: OLYMPUS CORPORATION

Inventor： Takahiro AMANAI ,  Keisuke TAKADA ,  Kyoko IIJIMA

IPC: G02B13/00 ,  G02B9/12 ,  G02B23/24

CPC classification number: G02B13/0035 ,  G02B9/12 ,  G02B13/04 ,  G02B23/243

Abstract: An image pickup apparatus includes an image forming optical system which includes an aperture stop and a plurality of lens components, and an image pickup section which has a light-receiving surface which is not flat but is curved to be concave toward the image forming optical system. The image forming optical system includes a first lens component having a negative refractive power, a second lens component having a positive refractive power, and a third lens component having a positive refractive power. In the first lens component, a lens surface on the object side is convex toward the object side, and in a lens surface on the object side of the second lens component, a part of an area is concave toward the object side. Moreover, the following conditional expression (1) is satisfied: 0.5

公开(公告)号：US20170336593A1

公开(公告)日：2017-11-23

申请号：US15674418

申请日：2017-08-10

Applicant: OLYMPUS CORPORATION

Inventor： Keisuke TAKADA

IPC: G02B7/10 ,  G02B9/60 ,  G02B9/14 ,  G02B9/34 ,  G02B15/14 ,  G02B13/00

CPC classification number: G02B7/10 ,  G02B9/14 ,  G02B9/34 ,  G02B9/60 ,  G02B13/0045 ,  G02B15/14 ,  G02B15/177

Abstract: A zoom image pickup apparatus includes a mount portion, a zoom lens which forms an image of light incident from the mount portion, and an image pickup element which is disposed at an image forming position. The zoom lens includes in order from an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a lens unit having a negative refractive power. The second lens unit is a focusing lens unit. At the time of zooming from a wide angle end to a telephoto end, the third lens unit and the lens unit having a negative refractive power positioned on an object side of the third lens unit move, and the following conditional expression (1) is satisfied: φL1

公开(公告)号：US20200178768A1

公开(公告)日：2020-06-11

申请号：US16788358

申请日：2020-02-12

Applicant: OLYMPUS CORPORATION

Inventor： Keisuke TAKADA ,  Hiromasa OKANO ,  Kazuki HONDA

IPC: A61B1/00 ,  A61B1/12 ,  A61B1/06

Abstract: An endoscope includes an insertion portion; a first projecting portion; a second projecting portion; an illumination window disposed on an outer peripheral surface side of the first projecting portion, the illumination window being disposed about an axis along a longitudinal axis direction of the insertion portion, the illumination window having a light emitting surface from which an illumination light for illuminating an inside of a subject is emitted in a direction which includes a sideward direction of the insertion portion; and a mask configured to restrict sideward emission of the illumination light from the illumination window, wherein the mask has a shape inclined with respect to the longitudinal axis direction so as to increase a quantity of the illumination light emitted toward the second projecting portion from a distal end side toward a proximal end side of a distal end portion of the insertion portion.

公开(公告)号：US20200170494A1

公开(公告)日：2020-06-04

申请号：US16787654

申请日：2020-02-11

Applicant: OLYMPUS CORPORATION

Inventor： Keisuke TAKADA ,  Hiromasa OKANO ,  Kazuki HONDA

IPC: A61B1/07 ,  F21V8/00 ,  A61B1/06 ,  A61B1/00

Abstract: An endoscope illumination unit includes: an incident part into which illuminating light guided via a light guide enters; a light guide body that includes an annular section having an inner peripheral surface and that guides the illuminating light having entered via the incident part and emits the illuminating light from an outer surface of the annular section; and a reflective sheet that has opposite end portions and that is provided on the inner peripheral surface of the annular section and scatters the illuminating light, having entered the light guide body, within the annular section. The opposite end portions of the reflective sheet bent in conformity to the inner peripheral surface of the annular section is positioned at a portion of the inner peripheral surface remote from the incident part.