Patents by Inventor Kazuma Watanabe
Kazuma Watanabe 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: 10598691Abstract: A scanning probe microscope includes a light source, a detector, a housing, an opening and closing door, an opening and closing sensor, a control unit, and the like. The opening and closing door is provided in the housing. The control unit 16 also functions as the light intensity change processing unit 164. In the scanning probe microscope, when the opening and closing sensor detects opening and closing of the opening and closing door, the light intensity change processing unit automatically changes the intensity of light irradiated from the light source based on a detection result of the opening and closing sensor. Therefore, it is possible to omit light intensity adjustment work performed manually by the user. As a result, the workability of the user when using the scanning probe microscope 1 can be improved.Type: GrantFiled: March 1, 2019Date of Patent: March 24, 2020Assignee: Shimadzu CorporationInventors: Kazuma Watanabe, Keita Fujino, Eiji Iida, Masato Hirade, Kenji Yamasaki, Hideo Nakajima, Yuichiro Ikeda, Hiroshi Arai
-
Publication number: 20190331711Abstract: A scanning probe microscope includes a light source, a detector, a housing, an opening and closing door, an opening and closing sensor, a control unit, and the like. The opening and closing door is provided in the housing. The control unit 16 also functions as the light intensity change processing unit 164. In the scanning probe microscope, when the opening and closing sensor detects opening and closing of the opening and closing door, the light intensity change processing unit automatically changes the intensity of light irradiated from the light source based on a detection result of the opening and closing sensor. Therefore, it is possible to omit light intensity adjustment work performed manually by the user. As a result, the workability of the user when using the scanning probe microscope 1 can be improved.Type: ApplicationFiled: March 1, 2019Publication date: October 31, 2019Inventors: Kazuma WATANABE, Keita FUJINO, Eiji IIDA, Masato HIRADE, Kenji YAMASAKI, Hideo NAKAJIMA, Yuichiro IKEDA, Hiroshi ARAI
-
Publication number: 20190324053Abstract: Provided is a scanning probe microscope being able to shorten an observation time of a minute observation object. Main measurement is performed to acquire a surface image of a sample based on a detection signal in a measurement range of a plurality of lines by repeating, for each line, processing of scanning a cantilever at predetermined second intervals in a Y-direction after acquiring the detection signal at predetermined first intervals while scanning the cantilever on a line having a predetermined length along an X-direction. Preliminary measurement is performed to acquire a surface image of the sample by acquiring the detection signal at intervals wider than the first intervals or scanning the cantilever in the Y-direction at intervals wider than the second intervals before the main measurement, the surface image of the sample being coarser than the surface image in the main measurement.Type: ApplicationFiled: March 1, 2019Publication date: October 24, 2019Inventors: Kazuma WATANABE, Keita FUJINO, Eiji IIDA, Masato HIRADE, Kenji YAMASAKI, Hideo NAKAJIMA, Yuichiro IKEDA, Hiroshi ARAI
-
Patent number: 10361535Abstract: The semiconductor laser driving circuit that controls an overshoot on modulation includes a semiconductor laser, of which anode is connected to a power source, that emits the laser light that is modulated by an external modulation input signal, an impedance element connected to a cathode of the laser device, an impedance element connected to the anode, and a collector of a transistor Q1, connected to the impedance element; a collector of a transistor Q2, connected to the other end of the impedance element, a differential pair circuit to which emitters of Q1, Q2 are connected; an electric current source iMOD connected to the emitters of Q1, Q2; and a differential driver that generates a differential voltage (vb1?vb2) that controls Q1, Q2 by driving Q1 by the external modulation input signal, wherein the differential driver controls the differential voltage so that the amplitude of the overshoot of the electric current, which flows in the laser when the output of the laser is at a high-level.Type: GrantFiled: July 10, 2018Date of Patent: July 23, 2019Assignee: SHIMADZU CORPORATIONInventors: Ichiro Fukushi, Akiyuki Kadoya, Kazuma Watanabe
-
Patent number: 10355447Abstract: A laser device suppresses the variation of each time-lag so that a distortion of a combined laser output is suppressed. The laser device includes electric current control elements Q1, Q2 connected in series to a laser diode unit corresponding to respective laser diode units LD1, LD2, an electric current control circuit 11 that controls an electric current flow in the laser diode unit by adding a voltage to a control terminal of the electric current control element to turn on the electric current control element, and voltage adjustment circuits 12a, 12b corresponding to the laser diode unit adjusts, individually, every laser diode unit and the voltage that is added to the control terminal of the electric current control element when the laser diode is off.Type: GrantFiled: May 16, 2018Date of Patent: July 16, 2019Assignee: SHIMADZU CORPORATIONInventors: Shingo Uno, Tomoyuki Hiroki, Kazuma Watanabe
-
Publication number: 20190190183Abstract: A connection terminal includes a terminal metal fitting that has first and second electric connection parts each having facing wall surfaces disposed facing each other at an interval and formed in a flat plate shape, and that is electrically connected to an electric connection part of a counterpart connection terminal inserted between first end parts of the first and the second electric connection parts. The terminal metal fitting has a joining part that couples first side end parts of respective second end parts of the first and the second electric connection parts, and an opening restriction part that keeps an interval between the facing wall surfaces of the respective second end parts of the first and the second electric connection parts between second side end parts of the respective second end parts of the first and the second electric connection parts.Type: ApplicationFiled: December 18, 2018Publication date: June 20, 2019Applicant: Yazaki CorporationInventors: Hajime KATO, Shigeo Mori, Fuminori Sugiyama, Hiroyuki Tanaka, Kazuma Watanabe
-
Patent number: 10230213Abstract: A semiconductor laser driving circuit that ensures the satisfied extinction ratio, the accuracy of the light output, and enables the light output dynamically to change based on a modulation signal.Type: GrantFiled: July 11, 2018Date of Patent: March 12, 2019Assignee: SHIMADZU CORPORATIONInventors: Ichiro Fukushi, Akiyuki Kadoya, Kazuma Watanabe
-
Publication number: 20190027894Abstract: A semiconductor laser driving circuit that ensures the satisfied extinction ratio, the accuracy of the light output, and enables the light output dynamically to change based on a modulation signal.Type: ApplicationFiled: July 11, 2018Publication date: January 24, 2019Applicant: SHIMADZU CORPORATIONInventors: Ichiro FUKUSHI, Akiyuki KADOYA, Kazuma WATANABE
-
Publication number: 20190027893Abstract: The semiconductor laser driving circuit that controls an overshoot on modulation includes a semiconductor laser, of which anode is connected to a power source, that emits the laser light that is modulated by an external modulation input signal, an impedance element connected to a cathode of the laser device, an impedance element connected to the anode, and a collector of a transistor Q1, connected to the impedance element; a collector of a transistor Q2, connected to the other end of the impedance element, a differential pair circuit to which emitters of Q1, Q2 are connected; an electric current source iMOD connected to the emitters of Q1, Q2; and a differential driver that generates a differential voltage (vb1?vb2) that controls Q1, Q2 by driving Q1 by the external modulation input signal, wherein the differential driver controls the differential voltage so that the amplitude of the overshoot of the electric current, which flows in the laser when the output of the laser is at a high-level.Type: ApplicationFiled: July 10, 2018Publication date: January 24, 2019Applicant: SHIMADZU CORPORATIONInventors: Ichiro FUKUSHI, Akiyuki KADOYA, Kazuma WATANABE
-
Publication number: 20180342852Abstract: A laser device suppresses the variation of each time-lag so that a distortion of a combined laser output is suppressed. The laser device includes electric current control elements Q1, Q2 connected in series to a laser diode unit corresponding to respective laser diode units LD1, LD2, an electric current control circuit 11 that controls an electric current flow in the laser diode unit by adding a voltage to a control terminal of the electric current control element to turn on the electric current control element, and voltage adjustment circuits 12a, 12b corresponding to the laser diode unit adjusts, individually, every laser diode unit and the voltage that is added to the control terminal of the electric current control element when the laser diode is off.Type: ApplicationFiled: May 16, 2018Publication date: November 29, 2018Applicant: SHIMADZU CORPORATIONInventors: Shingo UNO, Tomoyuki HIROKI, Kazuma WATANABE
-
Patent number: 10137526Abstract: A laser machining device machines a machining target subject by irradiating the converged laser beam output from each laser diode of a plurality of laser diodes connected in series to each other. A machining laser beam output-power driving circuit Q1 outputs a machining laser beam by driving the plurality of laser diodes 11a-11 d, 13. A guide light output-power driving circuit Q2 outputs a guide light by driving a partial laser diode 13 of the plurality of laser diodes. A selection means SW1, SW2 selects the guide light output-power driving circuit on determining the position and selects the machining laser output-power driving circuit on a laser machining. A setup value comparison circuit 16 controls the electric current flowing through the part of laser diodes to be below the electric current setup value to output the guide light having electric current not higher than the predetermined value.Type: GrantFiled: March 11, 2014Date of Patent: November 27, 2018Assignee: SHIMADZU CORPORATIONInventors: Junki Sakamoto, Ichiro Fukushi, Aklyuki Kadoya, Kazuma Watanabe, Jiro Saikawa, Naoya Ishigaki, Shingo Uno, Tomoyuki Hiroki, Koji Tojo
-
Publication number: 20180013263Abstract: A laser device has a plurality of laser diodes; a plurality of optical elements installed corresponding to the plurality of the laser diodes; a plurality of units formed by fixing the laser diodes and the optical elements per each laser diode and installed corresponding to the plurality of the laser diodes; a converging element that converges laser beams emitted from the plurality of the laser diodes to a fiber; a housing element houses the plurality of the units and the converging element; and a thermal transfer plate performs heat dissipation of the plurality of the units. The heat resistance reducing element having a heat resistance value that is smaller than a predetermined value is installed between the thermal transfer plate and each unit or the processing for reducing the heat resistance is performed.Type: ApplicationFiled: February 6, 2015Publication date: January 11, 2018Applicant: SHIMADZU CORPORATIONInventors: JUNKI SAKAMOTO, Ichiro FUKUSHI, Akiyuki KADOYA, Kazuma WATANABE, Naoya ISHIGAKI, Jiro SAIKAWA, Shingo UNO, Tomoyuki HIROKI, Koji TOJO
-
Patent number: 9746615Abstract: The light-synthesizing laser device includes a plurality of collimating lenses that are arranged in a one-to-one relationship with a plurality of laser light sources which exhibit anisotropy in a laser light emission angle, and that convert laser light beams emitted from the laser light sources into parallel light; a condensing lens that condenses the laser light that has been converted into parallel light by the plurality of collimating lenses; and an optical fiber (5) having a square waveguide core (SC) which has a square shape, the fiber receiving and synthesizing the laser light condensed by the condensing lens. A longitudinal axis of a condensed beam condensed by the condensing lens is aligned with a diagonal axis of the square waveguide core.Type: GrantFiled: June 17, 2014Date of Patent: August 29, 2017Assignee: SHIMADZU CORPORATIONInventors: Jiro Saikawa, Naoya Ishigaki, Shingo Uno, Tomoyuki Hiroki, Ichiro Fukushi, Akiyuki Kadoya, Junki Sakamoto, Koji Tojo, Kazuma Watanabe
-
Patent number: 9647422Abstract: A laser device has a plurality of semiconductor lasers, a driving device that supplies a driving electric current to the semiconductor laser, a trigger generation circuit that sends a trigger signal to the driving device in order to output the driving electric current, and a wave-combining device that wave-combines laser light emitted from the semiconductor lasers at the combined-wave end, and at least any one of a signal transmitting time, an electric current transmitting time and a light transmitting time is adjusted so as to be the time set respectively for transmitting paths; wherein the signal transmitting time in which the trigger signal transmits over the signal path, the electric current transmitting time in which the laser light transmits over the electric current path, a light transmitting time in which the laser light transmits over the optical path.Type: GrantFiled: March 26, 2014Date of Patent: May 9, 2017Assignee: SHIMADZU CORPORATIONInventors: Tomoyuki Hiroki, Koji Tojo, Kazuma Watanabe, Ichiro Fukushi, Akiyuki Kadoya, Junki Sakamoto, Jiro Saikawa, Naoya Ishigaki, Shingo Uno
-
Publication number: 20170110849Abstract: A laser device has a plurality of semiconductor lasers, a driving device that supplies a driving electric current to the semiconductor laser, a trigger generation circuit that sends a trigger signal to the driving device in order to output the driving electric current, and a wave-combining device that wave-combines laser light emitted from the semiconductor lasers at the combined-wave end, and at least any one of a signal transmitting time, an electric current transmitting time and a light transmitting time is adjusted so as to be the time set respectively for transmitting paths; wherein the signal transmitting time in which the trigger signal transmits over the signal path, the electric current transmitting time in which the laser light transmits over the electric current path, a light transmitting time in which the laser light transmits over the optical path.Type: ApplicationFiled: March 26, 2014Publication date: April 20, 2017Applicant: SHIMADZU CORPORATIONInventors: Tomoyuki HIROKI, Koji TOJO, Kazuma WATANABE, Ichiro FUKUSHI, Akiyuki KADOYA, Junki SAKAMOTO, Jiro SAIKAWA, Naoya ISHIGAKI, Shingo UNO
-
Publication number: 20170082805Abstract: The light-synthesizing laser device includes a plurality of collimating lenses that are arranged in a one-to-one relationship with a plurality of laser light sources which exhibit anisotropy in a laser light emission angle, and that convert laser light beams emitted from the laser light sources into parallel light; a condensing lens that condenses the laser light that has been converted into parallel light by the plurality of collimating lenses; and an optical fiber (5) having a square waveguide core (SC) which has a square shape, the fiber receiving and synthesizing the laser light condensed by the condensing lens. A longitudinal axis of a condensed beam condensed by the condensing lens is aligned with a diagonal axis of the square waveguide core.Type: ApplicationFiled: June 17, 2014Publication date: March 23, 2017Applicant: SHIMADZU CORPORATIONInventors: JIRO SAIKAWA, Naoya ISHIGAKI, Shingo UNO, Tomoyuki HIROKI, Ichiro FUKUSHI, Akiyuki KADOYA, Junki SAKAMOTO, Koji TOJO, Kazuma WATANABE
-
Publication number: 20170021449Abstract: A laser machining device machines a machining target subject by irradiating the converged laser beam output from each laser diode of a plurality of laser diodes connected in series to each other. A machining laser beam output-power driving circuit Q1 outputs a machining laser beam by driving the plurality of laser diodes 11a-11 d, 13. A guide light output-power driving circuit Q2 outputs a guide light by driving a partial laser diode 13 of the plurality of laser diodes. A selection means SW1, SW2 selects the guide light output-power driving circuit on determining the position and selects the machining laser output-power driving circuit on a laser machining. A setup value comparison circuit 16 controls the electric current flowing through the part of laser diodes to be below the electric current setup value to output the guide light having electric current not higher than the predetermined value.Type: ApplicationFiled: March 11, 2014Publication date: January 26, 2017Applicant: SHIMADZU CORPORATIONInventors: JUNKI SAKAMOTO, Ichiro FUKUSHI, Aklyuki KADOYA, Kazuma WATANABE, Jiro SAIKAWA, Naoya ISHIGAKI, Shingo UNO, Tomoyuki HIROKI, Koji TOJO
-
Patent number: 7620079Abstract: A compact apparatus is provided for stably converting a wavelength of a laser diode with the use of an optical fiber and a wavelength selective device. Employing a bulk type element as a wavelength selective device makes the action of controlling the temperature of the device easy, and can stabilize the wavelength emitted from the laser diode. The optical fiber (2) is placed between the output side of a laser diode (1) and a wavelength selective device (5) of bulk type. While the optical fiber (2) is arranged compact in the form of a coil, the length of an extra-cavity defined by the wavelength selective device (5) is sufficiently longer than the coherence length. Accordingly, the action of stably converting the wavelength can be carried out by the compact apparatus.Type: GrantFiled: April 30, 2008Date of Patent: November 17, 2009Assignee: Shimadzu CorporationInventors: Ichiro Fukushi, Koji Tojo, Kazuma Watanabe
-
Publication number: 20090196320Abstract: A compact apparatus is provided for stably converting a wavelength of a laser diode with the use of an optical fiber and a wavelength selective device. Employing a bulk type element as a wavelength selective device makes the action of controlling the temperature of the device easy, and can stabilize the wavelength emitted from the laser diode. The optical fiber (2) is placed between the output side of a laser diode (1) and a wavelength selective device (5) of bulk type. While the optical fiber (2) is arranged compact in the form of a coil, the length of an extra-cavity defined by the wavelength selective device (5) is sufficiently longer than the coherence length. Accordingly, the action of stably converting the wavelength can be carried out by the compact apparatus.Type: ApplicationFiled: April 30, 2008Publication date: August 6, 2009Applicant: Shimadzu CorporationInventors: Ichiro Fukushi, Koji Tojo, Kazuma Watanabe
-
Patent number: D879047Type: GrantFiled: June 19, 2018Date of Patent: March 24, 2020Assignee: YAZAKI CORPORATIONInventors: Hajime Kato, Shigeo Mori, Fuminori Sugiyama, Hiroyuki Tanaka, Kazuma Watanabe