Patents by Inventor Shigeru Okikawa
Shigeru Okikawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11911102Abstract: An ophthalmologic apparatus is provided, which is capable of more securely supporting left and right cheekbone portions of a subject in accordance with the size and shape of the subject's face allowing the subject to respond orally where the positions of the subject's eyes are fixed. The ophthalmologic apparatus includes a forehead contact portion coming into contact with the forehead of the subject, and a cheek contact portion coming into contact with the cheeks of the subject. The cheek contact portion includes a first cheek-contact body that supports one of the cheeks of the subject, a second cheek-contact body that supports the other one of the cheeks of the subject, and an opening/closing mechanism portion that opens and closes in a horizontal direction the first cheek-contact body and the second cheek-contact body in a direction of coming close to each other and a direction of separating from each other.Type: GrantFiled: October 13, 2020Date of Patent: February 27, 2024Assignee: Topcon CorporationInventors: John Thomas Trefethen, Thomas Nuzzo, Akira Mizuno, Shigeru Okikawa, Yuta Suzuki
-
Publication number: 20240049962Abstract: An ophthalmic apparatus includes an objective lens, an illumination optical system, an imaging optical system, and an optical path coupling member. The illumination optical system may illuminate a subject's eye with illumination light via the objective lens. The imaging optical system may guide returning light of the illumination light from the subject's eye to an imaging device via the objective lens. The optical path coupling member has a transparent member with a reflective region formed by evaporating a reflective film onto a part of a transmission region of its surface, and is configured to couple an optical path of the illumination optical system with an optical path of the imaging optical system. The transmission region may be arranged substantially conjugate optically to a subject's iris. The illumination light is reflected on the reflective region and the returning light is transmitted through the transmission region.Type: ApplicationFiled: March 7, 2023Publication date: February 15, 2024Applicant: Topcon CorporationInventors: Masashi NAKAJIMA, Ryosuke SHIMOSAWA, Shigeru OKIKAWA
-
Patent number: 11471049Abstract: An ophthalmologic apparatus comprises eye information obtaining portions, each of the eye information obtaining portions corresponding to each of subject eyes of a subject and configured to obtain information on each of the subject eyes; imaging portions, each of the imaging portions corresponding to each of the eye information obtaining portions and configured to capture a subject eye image of each of the subject eyes; a reference calculator configured to obtain a three-dimensional reference position in each of the subject eye images captured by each of the imaging portions; an inclination calculator configured to obtain inclination information indicating inclination of relative positions of the subject eyes from the obtained three-dimensional reference positions in the subject eye images; and a notification portion configured to notify the obtained inclination information.Type: GrantFiled: January 27, 2020Date of Patent: October 18, 2022Assignee: TOPCON CORPORATIONInventors: Takafumi Yukimori, Shigeru Okikawa
-
Publication number: 20220110517Abstract: An ophthalmologic apparatus is provided, which is capable of more securely supporting left and right cheekbone portions of a subject in accordance with the size and shape of the subject's face allowing the subject to respond orally where the positions of the subject's eyes are fixed. The ophthalmologic apparatus includes a forehead contact portion coming into contact with the forehead of the subject, and a cheek contact portion coming into contact with the cheeks of the subject.Type: ApplicationFiled: October 13, 2020Publication date: April 14, 2022Applicant: Topcon CorporationInventors: John Thomas TREFETHEN, Thomas NUZZO, Akira MIZUNO, Shigeru OKIKAWA, Yuta SUZUKI
-
Publication number: 20200253472Abstract: An ophthalmologic apparatus comprises eye information obtaining portions, each of the eye information obtaining portions corresponding to each of subject eyes of a subject and configured to obtain information on each of the subject eyes; imaging portions, each of the imaging portions corresponding to each of the eye information obtaining portions and configured to capture a subject eye image of each of the subject eyes; a reference calculator configured to obtain a three-dimensional reference position in each of the subject eye images captured by each of the imaging portions; an inclination calculator configured to obtain inclination information indicating inclination of relative positions of the subject eyes from the obtained three-dimensional reference positions in the subject eye images; and a notification portion configured to notify the obtained inclination information.Type: ApplicationFiled: January 27, 2020Publication date: August 13, 2020Inventors: Takafumi YUKIMORI, Shigeru OKIKAWA
-
Patent number: 10231620Abstract: An ophthalmic apparatus capable of selectively performing a first imaging mode in which imaging of a subject's eye is performed in a first state where an attachment unit is not attached, and a second imaging mode in which imaging of the subject's eye is performed in a second state where the attachment unit is attached. The ophthalmic apparatus includes: an operation unit; an attachment state determination unit to determine whether or not the attachment unit is attached; a correspondence determination unit to determine whether or not the correspondence between the imaging mode designated by a use of the operation unit and an attachment state of the attachment unit obtained by the attachment state determination unit is appropriate; and a controller to perform control for prohibiting imaging in at least the designated imaging mode when the correspondence determination unit has determined that the correspondence is not appropriate.Type: GrantFiled: August 28, 2015Date of Patent: March 19, 2019Assignee: KABUSHIKI KAISHA TOPCONInventors: Ryota Ishiai, Kota Fujii, Shigeru Okikawa
-
Publication number: 20170224213Abstract: An embodiment provides a technology for preventing a situation in which a subject's eye is imaged in an inappropriate imaging mode. An ophthalmic apparatus according to one embodiment is capable of selectively performing a first imaging mode and a second imaging mode. The first imaging mode is an imaging mode in which imaging of a subject's eye is performed in a first state where an attachment unit is not attached. The second imaging mode is an imaging mode in which imaging of the subject's eye is performed in a second state where the attachment unit is attached.Type: ApplicationFiled: August 28, 2015Publication date: August 10, 2017Applicant: KABUSHIKI KAISHA TOPCONInventors: Ryota Ishiai, Kota Fujii, Shigeru Okikawa
-
Patent number: 9072457Abstract: A cam face 303a of a cam 303 has a shape depending on the distribution of the light amount in the cross-section of reference light LR. When the cam 303 is rotated by a stepping motor 302, an abutment 312 moves following the displacement of the cam face 302a with the rotation of the cam 303. A light-blocking link 310 rotates about the axis of rotation 311 with the movement of the abutment 312. A shield 313 moves in a first direction with the rotation of the light-blocking link 310 to change the shielding region of the reference light LR. A light-blocking plate 400 can shield the reference light LR from a second direction different from a shielding direction (first direction) by an attenuator 300. The light-blocking plate 400 is moved by a drive mechanism 410 and changes the shielding region.Type: GrantFiled: November 16, 2010Date of Patent: July 7, 2015Assignee: KABUSHIKI KAISHA TOPCONInventors: Shigeru Okikawa, Tomoyoshi Abe
-
Publication number: 20120257212Abstract: A cam face 303a of a cam 303 has a shape depending on the distribution of the light amount in the cross-section of reference light LR. When the cam 303 is rotated by a stepping motor 302, an abutment 312 moves following the displacement of the cam face 302a with the rotation of the cam 303. A light-blocking link 310 rotates about the axis of rotation 311 with the movement of the abutment 312. A shield 313 moves in a first direction with the rotation of the light-blocking link 310 to change the shielding region of the reference light LR. A light-blocking plate 400 can shield the reference light LR from a second direction different from a shielding direction (first direction) by an attenuator 300. The light-blocking plate 400 is moved by a drive mechanism 410 and changes the shielding region.Type: ApplicationFiled: November 16, 2010Publication date: October 11, 2012Applicant: KABUSHIKI KAISHA TOPCONInventors: Shigeru Okikawa, Tomoyoshi Abe