Patents by Inventor Takanobu Osaka
Takanobu Osaka 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: 11885997Abstract: A light guide for a virtual image device to guide and emit image light output from an image display element to display a virtual image. The light guide includes a light-guide member and an optical member. The light-guide member includes an incidence portion to receive the image light and an exit portion to emit the image light to an outside, and a reflective portion inclined relative to the incidence portion to guide the image light received by the incidence portion into the light guide. The light-guide member also includes an extraction portion including first planes each inclined relative to the exit portion and second planes each parallel with the exit portion, to guide the image light from each first plane to the exit portion and extract the image light. The optical member includes a parallel plane and an inclined portion.Type: GrantFiled: September 10, 2018Date of Patent: January 30, 2024Assignee: RICOH COMPANY, LTD.Inventors: Shiori Ohsugi, Takashi Kubota, Takanobu Osaka, Naoki Nakamura
-
Publication number: 20220304615Abstract: A measurement system includes: a mounting member configured to be mounted on a measurement target portion of a living body and including a plurality of holding units configured to hold a plurality of magnetic sensors such that the plurality of magnetic sensors face the measurement target portion; an image capturing unit configured to capture images of markers arranged in arrangement regions of the plurality of holding units of the mounting member mounted on the measurement target portion, in the measurement target portion; a moving mechanism unit configured to move the image capturing unit relative to the measurement target portion on which the mounting member is mounted; and a derivation unit configured to derive three-dimensional position information on the plurality of magnetic sensors held by the plurality of holding units relative to the measurement target portion, based on the captured images of the markers.Type: ApplicationFiled: March 22, 2022Publication date: September 29, 2022Inventors: Hironobu MIFUNE, Takanobu OSAKA
-
Publication number: 20220304605Abstract: A biomagnetic measurement apparatus including: a magnetic sensor; a sensor holder having a cylindrical shape and configured to accommodate and hold the magnetic sensor; a sensor fixing part to which the sensor holder is fixed; and a base to which the sensor fixing part is mounted and configured to be mounted to an object of measurement. The sensor holder includes: a pressing part configured to press the magnetic sensor toward the object of measurement; and a plate including a protrusion configured to engage with the sensor fixing part.Type: ApplicationFiled: March 15, 2022Publication date: September 29, 2022Applicant: Ricoh Company, Ltd.Inventors: Takanobu OSAKA, Hironobu MIFUNE
-
Publication number: 20210293913Abstract: A magnetic measuring system includes an optical pumping atomic magnetometer measuring a magnetic field emanated from a subject to be measured, an external coil disposed around the optical pumping atomic magnetometer, an external coil driver configured to drive the external coil, and a stimulation application device configured to apply stimulation to the subject to be measured, wherein the external coil driver outputs a plurality of types of command values to the external coil, wherein the plurality of types of the command values is set so that a center frequency in a frequency characteristic of the optical pumping atomic magnetometer differs in response to an operation of the external coil in accordance with the command value, and the external coil driver sequentially changes the command value output to the external coil in response to the applying of the stimulation to the subject to be measured.Type: ApplicationFiled: March 16, 2021Publication date: September 23, 2021Applicant: Ricoh Company, Ltd.Inventors: Hironobu MIFUNE, Takanobu OSAKA
-
Publication number: 20200315482Abstract: A magnetic measuring device includes a magnetic sensor and multiple plate parts. At least one of the plate parts holds the magnetic sensor, and the plate parts are detachably joined to each other at edges of the plate parts.Type: ApplicationFiled: March 17, 2020Publication date: October 8, 2020Applicant: Ricoh Company, Ltd.Inventors: Takanobu OSAKA, Hironobu MIFUNE
-
Patent number: 10606042Abstract: A magnification optical system forms an enlarged image of an object. It includes a refractive optical system including a plurality of lens groups; and a mirror train including a curved mirror, arranged in this order from an object side, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of a conjugate surface on the object side, and a second focus structure configured to move the respective lens groups along the normal line of the conjugate surface on the object side by different amounts from those of the first focus structure.Type: GrantFiled: May 1, 2019Date of Patent: March 31, 2020Assignee: Ricoh Company, Ltd.Inventors: Hibiki Tatsuno, Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka, Makoto Hirakawa
-
Publication number: 20200004129Abstract: An image display device includes an image display element, a light source, an illumination system, a projector system comprising a refractive optical system including a plurality of lens groups, and a mirror train including a curved mirror, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of the image display element, and a second focus structure configured to move the respective lens groups along the normal line of the image display element by different amounts from those of the first focus structure.Type: ApplicationFiled: September 10, 2019Publication date: January 2, 2020Inventors: Hibiki Tatsuno, Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka, Makoto Hirakawa
-
Publication number: 20190391215Abstract: An atomic magnetometer includes a laser light source that emits light, a light splitting unit that splits the light emitted from the laser light source into a first light beam and a second light beam, a transparent cell filled with an alkali metal atom and through which the first light beam is transmitted; and a photodetector.Type: ApplicationFiled: June 20, 2019Publication date: December 26, 2019Applicant: Ricoh Company, Ltd.Inventor: TAKANOBU OSAKA
-
Patent number: 10451961Abstract: An image display device includes an image display element, a light source, an illumination system, a projector system comprising a refractive optical system including a plurality of lens groups, and a mirror train including a curved mirror, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of the image display element, and a second focus structure configured to move the respective lens groups along the normal line of the image display element by different amounts from those of the first focus structure.Type: GrantFiled: November 5, 2012Date of Patent: October 22, 2019Assignee: RICOH COMPANY, LTD.Inventors: Hibiki Tatsuno, Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka, Makoto Hirakawa
-
Publication number: 20190258036Abstract: A magnification optical system forms an enlarged image of an object. It includes a refractive optical system including a plurality of lens groups; and a mirror train including a curved mirror, arranged in this order from an object side, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of a conjugate surface on the object side, and a second focus structure configured to move the respective lens groups along the normal line of the conjugate surface on the object side by different amounts from those of the first focus structure.Type: ApplicationFiled: May 1, 2019Publication date: August 22, 2019Applicant: Ricoh Company, Ltd.Inventors: Hibiki TATSUNO, Kiichiro NISHINA, Yasuyuki SHIBAYAMA, Takanobu OSAKA, Makoto HIRAKAWA
-
Patent number: 10310238Abstract: A magnification optical system forms an enlarged image of an object. It includes a refractive optical system including a plurality of lens groups; and a mirror train including a curved mirror, arranged in this order from an object side, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of a conjugate surface on the object side, and a second focus structure configured to move the respective lens groups along the normal line of the conjugate surface on the object side by different amounts from those of the first focus structure.Type: GrantFiled: September 14, 2017Date of Patent: June 4, 2019Assignee: RICOH COMPANY, LTD.Inventors: Hibiki Tatsuno, Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka, Makoto Hirakawa
-
Publication number: 20190004235Abstract: A light guide for a virtual image device to guide and emit image light output from an image display element to display a virtual image. The light guide includes a light-guide member and an optical member. The light-guide member includes an incidence portion to receive the image light and an exit portion to emit the image light to an outside, and a reflective portion inclined relative to the incidence portion to guide the image light received by the incidence portion into the light guide. The light-guide member also includes an extraction portion including first planes each inclined relative to the exit portion and second planes each parallel with the exit portion, to guide the image light from each first plane to the exit portion and extract the image light. The optical member includes a parallel plane and an inclined portion.Type: ApplicationFiled: September 10, 2018Publication date: January 3, 2019Inventors: Shiori OHSUGI, Takashi KUBOTA, Takanobu OSAKA, Naoki NAKAMURA
-
Patent number: 10088620Abstract: A light guide for a virtual image device to guide and emit image light output from an image display element to display a virtual image. The light guide includes a light-guide member and an optical member. The light-guide member includes an incidence portion to receive the image light and an exit portion to emit the image light to an outside, and a reflective portion inclined relative to the incidence portion to guide the image light received by the incidence portion into the light guide. The light-guide member also includes an extraction portion including first planes each inclined relative to the exit portion and second planes each parallel with the exit portion, to guide the image light from each first plane to the exit portion and extract the image light. The optical member includes a parallel plane and an inclined portion.Type: GrantFiled: September 20, 2016Date of Patent: October 2, 2018Assignee: Ricoh Company, Ltd.Inventors: Shiori Ohsugi, Takashi Kubota, Takanobu Osaka, Naoki Nakamura
-
Publication number: 20180003928Abstract: A magnification optical system forms an enlarged image of an object. It includes a refractive optical system including a plurality of lens groups; and a mirror train including a curved mirror, arranged in this order from an object side, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of a conjugate surface on the object side, and a second focus structure configured to move the respective lens groups along the normal line of the conjugate surface on the object side by different amounts from those of the first focus structure.Type: ApplicationFiled: September 14, 2017Publication date: January 4, 2018Inventors: Hibiki TATSUNO, Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka, Makoto Hirakawa
-
Patent number: 9857672Abstract: A light source unit includes a first reflector having a reflection face; a second reflector having a reflection face; a plurality of light sources; and a light condensing optical system to condense light emitted from the plurality of light sources. Light beams emitted from the plurality of light sources are reflected at a first reflection position on the reflection face of the first reflector, and then reflected at a second reflection position on the reflection face of the second reflector. The second reflection position is close to an optical axis of the light condensing optical system compared to the first reflection position.Type: GrantFiled: March 10, 2014Date of Patent: January 2, 2018Assignee: RICOH COMPANY, LTDInventors: Tatsuya Takahashi, Takanobu Osaka, Naoki Nakamura, Kazuhiro Fujita, Takehiro Nishimori
-
Patent number: 9841584Abstract: A magnification optical system forms an enlarged image of an object. It includes a refractive optical system including a plurality of lens groups; and a mirror train including a curved mirror, arranged in this order from an object side, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of a conjugate surface on the object side, and a second focus structure configured to move the respective lens groups along the normal line of the conjugate surface on the object side by different amounts from those of the first focus structure.Type: GrantFiled: April 19, 2016Date of Patent: December 12, 2017Assignee: RICOH COMPANY, LTD.Inventors: Hibiki Tatsuno, Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka, Makoto Hirakawa
-
Patent number: 9784952Abstract: A magnification optical system forms an enlarged image of an object. It includes a refractive optical system including a plurality of lens groups; and a mirror train including a curved mirror, arranged in this order from an object side, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of a conjugate surface on the object side, and a second focus structure configured to move the respective lens groups along the normal line of the conjugate surface on the object side by different amounts from those of the first focus structure.Type: GrantFiled: April 19, 2016Date of Patent: October 10, 2017Assignee: RICOH COMPANY, LTD.Inventors: Hibiki Tatsuno, Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka, Makoto Hirakawa
-
Publication number: 20170090094Abstract: A light guide for a virtual image device to guide and emit image light output from an image display element to display a virtual image. The light guide includes a light-guide member and an optical member. The light-guide member includes an incidence portion to receive the image light and an exit portion to emit the image light to an outside, and a reflective portion inclined relative to the incidence portion to guide the image light received by the incidence portion into the light guide. The light-guide member also includes an extraction portion including first planes each inclined relative to the exit portion and second planes each parallel with the exit portion, to guide the image light from each first plane to the exit portion and extract the image light. The optical member includes a parallel plane and an inclined portion.Type: ApplicationFiled: September 20, 2016Publication date: March 30, 2017Inventors: Shiori OHSUGI, Takashi KUBOTA, Takanobu OSAKA, Naoki NAKAMURA
-
Publication number: 20160231542Abstract: A magnification optical system forms an enlarged image of an object. It includes a refractive optical system including a plurality of lens groups; and a mirror train including a curved mirror, arranged in this order from an object side, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of a conjugate surface on the object side, and a second focus structure configured to move the respective lens groups along the normal line of the conjugate surface on the object side by different amounts from those of the first focus structure.Type: ApplicationFiled: April 19, 2016Publication date: August 11, 2016Inventors: Hibiki TATSUNO, Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka, Makoto Hirakawa
-
Patent number: 9354498Abstract: A light source unit includes a first reflector having a reflection face; a second reflector having a reflection face; a plurality of light sources; and a light condensing optical system disposed between the first reflector and the second reflector. Light beams emitted from the plurality of light sources are reflected at a first reflection position on the reflection face of the first reflector, and then reflected at a second reflection position on the reflection face of the second reflector. The second reflection position is close to an optical axis of the light condensing optical system compared to the first reflection position. The light condensing optical system is configured such that the light beam passes through the light condensing optical system at least two times when the light beams reflect between the first reflector and the second reflector.Type: GrantFiled: February 25, 2014Date of Patent: May 31, 2016Assignee: RICOH COMPANY, LTD.Inventors: Tatsuya Takahashi, Takanobu Osaka, Naoki Nakamura, Kazuhiro Fujita, Takehiro Nishimori