Patents by Inventor Hiroshi Tosaka
Hiroshi Tosaka 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: 11967458Abstract: A superconducting coil includes: a winding member 12 that has a side surface 18 along a coil radial direction and is formed by laminating a superconducting tape wire 20 in the coil radial direction by winding; and a bypass 19 that is provided on the side surface 18 of the winding member 12 and electrically connects the superconducting tape wire 20 in the coil radial direction.Type: GrantFiled: June 30, 2023Date of Patent: April 23, 2024Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Energy Systems & Solutions CorporationInventors: Sadanori Iwai, Taizo Tosaka, Hiroshi Miyazaki, Kenji Tasaki
-
Patent number: 11213188Abstract: An optical fiber scanning device includes a housing, an optical fiber configured to emit light, a magnet disposed on the optical fiber, four drive coils configured to drive the optical fiber by applying to the magnet a magnetic field generated by a received drive power signal, and four detection coils configured to output an induced electromotive force signal corresponding to variation of a magnetic field, wherein the drive power signal is controlled based on the induced electromotive force signal, and four coil assemblies each including any one of the drive coils and any one of the detection coils are disposed at rotationally symmetrical positions so as to interpose the optical fiber among the four coil assemblies.Type: GrantFiled: July 26, 2018Date of Patent: January 4, 2022Assignee: OLYMPUS CORPORATIONInventors: Hiroshi Tosaka, Masanori Ogata
-
Patent number: 11186795Abstract: A sliding mechanism excellent in seizure resistance is provided. A sliding mechanism including a lubricating oil interposed at a sliding surface between a DLC coating sliding member (A) and a sliding member (B), wherein the DLC coating sliding member (A) has a DLC film covered on a base material, and metal films in an island configuration are covered on a surface of the DLC film.Type: GrantFiled: December 28, 2017Date of Patent: November 30, 2021Assignee: NISSAN MOTOR CO., LTD.Inventors: Seiichi Nakano, Yutaka Mabuchi, Tsuyoshi Higuchi, Takemichi Yamashita, Hiroshi Tosaka
-
Patent number: 11096562Abstract: An optical fiber scanning system includes: an optical fiber with a magnet; four drive coils configured to apply a drive magnetic field generated using a drive power signal to the magnet; four detection coils configured to output a detection signal in response to variation of a magnetic field; a controller configured to perform feedback control of the drive power signal; a signal output circuit configured to output a drive signal; a voltage-current conversion circuit configured to convert the drive signal to the drive power signal; and a correction circuit configured to output a magnet magnetic field signal by removing the drive magnetic field signal from the detection signal, and the controller controls the signal output circuit based on the magnet magnetic field signal.Type: GrantFiled: July 26, 2018Date of Patent: August 24, 2021Assignee: OLYMPUS CORPORATIONInventors: Hiroshi Tosaka, Masanori Ogata
-
Publication number: 20200385645Abstract: A sliding mechanism excellent in seizure resistance is provided. A sliding mechanism including a lubricating oil interposed at a sliding surface between a DLC coating sliding member (A) and a sliding member (B), wherein the DLC coating sliding member (A) has a DLC film covered on a base material, and metal films in an island configuration are covered on a surface of the DLC film.Type: ApplicationFiled: December 28, 2017Publication date: December 10, 2020Applicant: NISSAN MOTOR CO., LTD.Inventors: Seiichi NAKANO, Yutaka MABUCHI, Tsuyoshi HIGUCHI, Takemichi YAMASHITA, Hiroshi TOSAKA
-
Publication number: 20180353056Abstract: An optical fiber scanning system includes: an optical fiber with a magnet; four drive coils configured to apply a drive magnetic field generated using a drive power signal to the magnet; four detection coils configured to output a detection signal in response to variation of a magnetic field; a controller configured to perform feedback control of the drive power signal; a signal output circuit configured to output a drive signal; a voltage-current conversion circuit configured to convert the drive signal to the drive power signal; and a correction circuit configured to output a magnet magnetic field signal by removing the drive magnetic field signal from the detection signal, and the controller controls the signal output circuit based on the magnet magnetic field signal.Type: ApplicationFiled: July 26, 2018Publication date: December 13, 2018Applicant: OLYMPUS CORPORATIONInventors: Hiroshi TOSAKA, Masanori OGATA
-
Publication number: 20180325362Abstract: An optical fiber scanning device includes a housing, an optical fiber configured to emit light, a magnet disposed on the optical fiber, four drive coils configured to drive the optical fiber by applying to the magnet a magnetic field generated by a received drive power signal, and four detection coils configured to output an induced electromotive force signal corresponding to variation of a magnetic field, wherein the drive power signal is controlled based on the induced electromotive force signal, and four coil assemblies each including any one of the drive coils and any one of the detection coils are disposed at rotationally symmetrical positions so as to interpose the optical fiber among the four coil assemblies.Type: ApplicationFiled: July 26, 2018Publication date: November 15, 2018Applicant: OLYMPUS CORPORATIONInventors: Hiroshi TOSAKA, Masanori OGATA
-
Patent number: 7852551Abstract: A clear image having suppressed blurring due to pulsing is obtained by in-vivo examination of biological tissue or various internal organs of mammals, including small laboratory animals.Type: GrantFiled: June 9, 2005Date of Patent: December 14, 2010Assignee: Olympus CorporationInventors: Mitsuhiro Hara, Hiroshi Tosaka, Akihiro Horii, Kazunari Tokuda, Yoshihisa Tanikawa
-
Patent number: 7427747Abstract: A control portion of an optical image pickup apparatus includes a scan driver, a lock-in amplifier, and an A/D converter. The scan driver outputs a predetermined drive signal to a Y-scanning mirror and an X-scanning mirror and scans the Y-scanning mirror and the X-scanning mirror. The lock-in amplifier detects a signal level Vout of a frequency component of the drive signal of the scan driver among signals detected by a detector portion. The A/D converter converts a signal detected by a detector portion and a signal level of the detected signal of a frequency component of a drive signal detected by the lock-in amplifier to digital signals and outputs the digital signals to an image processor. Thus, mirror scan operations of the scanning mirrors can be securely detected.Type: GrantFiled: July 27, 2006Date of Patent: September 23, 2008Assignee: Olympus CorporationInventors: Yasushige Ishihara, Atsushi Okawa, Hiroshi Tosaka, Tianyu Xie, Tadashi Hirata, Akihiro Horii, Kazunari Tokuda
-
Publication number: 20080130103Abstract: A clear image having suppressed blurring due to pulsing is obtained by in-vivo examination of biological tissue or various internal organs of mammals, including small laboratory animals.Type: ApplicationFiled: June 9, 2005Publication date: June 5, 2008Applicant: Olympus CorporationInventors: Mitsuhiro Hara, Hiroshi Tosaka, Akihiro Horii, Yoshihisa Tanikawa
-
Publication number: 20060261263Abstract: A control portion of an optical image pickup apparatus includes a scan driver, a lock-in amplifier, and an A/D converter. The scan driver outputs a predetermined drive signal to a Y-scanning mirror and an X-scanning mirror and scans the Y-scanning mirror and the X-scanning mirror. The lock-in amplifier detects a signal level Vout of a frequency component of the drive signal of the scan driver among signals detected by a detector portion. The A/D converter converts a signal detected by a detector portion and a signal level of the detected signal of a frequency component of a drive signal detected by the lock-in amplifier to digital signals and outputs the digital signals to an image processor. Thus, mirror scan operations of the scanning mirrors can be securely detected.Type: ApplicationFiled: July 27, 2006Publication date: November 23, 2006Applicant: OLYMPUS CORPORATIONInventors: Yasushige Ishihara, Atsushi Okawa, Hiroshi Tosaka, Tianyu Xie, Tadashi Hirata, Akihiro Horii, Kazunari Tokuda
-
Patent number: 7129473Abstract: A control portion of an optical image pickup apparatus includes a scan driver, a lock-in amplifier, and an A/D converter. The scan driver outputs a predetermined drive signal to a Y-scanning mirror and an X-scanning mirror and scans the Y-scanning mirror and the X-scanning mirror. The lock-in amplifier detects a signal level Vout of a frequency component of the drive signal of the scan driver among signals detected by a detector portion. The A/D converter converts a signal detected by a detector portion and a signal level of the detected signal of a frequency component of a drive signal detected by the lock-in amplifier to digital signals and outputs the digital signals to an image processor. Thus, mirror scan operations of the scanning mirrors can be securely detected.Type: GrantFiled: May 14, 2004Date of Patent: October 31, 2006Assignee: Olympus CorporationInventors: Yasushige Ishihara, Atsushi Okawa, Hiroshi Tosaka, Tianyu Xie, Tadashi Hirata, Akihiro Horii, Kazunari Tokuda
-
Publication number: 20050020877Abstract: A control portion of an optical image pickup apparatus includes a scan driver, a lock-in amplifier, and an A/D converter. The scan driver outputs a predetermined drive signal to a Y-scanning mirror and an X-scanning mirror and scans the Y-scanning mirror and the X-scanning mirror. The lock-in amplifier detects a signal level Vout of a frequency component of the drive signal of the scan driver among signals detected by a detector portion. The A/D converter converts a signal detected by a detector portion 5 and a signal level of the detected signal of a frequency component of a drive signal detected by the lock-in amplifier to digital signals and outputs the digital signals to an image processor 7. Thus, mirror scan operations of the scanning mirrors can be securely detected.Type: ApplicationFiled: May 14, 2004Publication date: January 27, 2005Applicant: OLYMPUS CORPORATIONInventors: Yasushige Ishihara, Atsushi Okawa, Hiroshi Tosaka, Tianyu Xie, Tadashi Hirata, Akihiro Horii, Kazunari Tokuda