-
公开(公告)号：US10476228B2
公开(公告)日：2019-11-12
申请号：US16082938
申请日：2016-03-09
Applicant: SHIMADZU CORPORATION
Inventor： Shingo Uno , Tomoyuki Hiroki , Koji Tojo , Jiro Saikawa , Naoya Ishigaki , Junki Sakamoto
Abstract: The present invention comprises: a light-emitting element group configured from columns of serially connected light-emitting elements, one of the ends from each of the columns of the light-emitting elements being collectively connected to a power source; current control elements, provided to correspond to the columns, and being connected to each of the columns of the light-emitting elements at the other end thereof, for controlling the current flowing through the light-emitting elements; a forward voltage monitoring circuit for monitoring, for each of the columns, the total forward voltage across the light-emitting elements; and a control circuit for controlling the current control elements, on the basis of the total forward voltage across the light-emitting elements from each of the columns detected by the forward voltage monitoring circuit, in such a manner that the variations in the total forward voltage across the columns of the light-emitting elements reach a threshold value or lower.
-
公开(公告)号：US10355447B2
公开(公告)日：2019-07-16
申请号：US15981180
申请日：2018-05-16
Applicant: SHIMADZU CORPORATION
Inventor： Shingo Uno , Tomoyuki Hiroki , Kazuma Watanabe
IPC: H01S5/0683 , H01S5/40 , H01S5/042 , H01S5/068 , H01S5/062
Abstract: 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.
-
Patent Agency Ranking
公开(公告)号：US10727644B2
公开(公告)日：2020-07-28
申请号：US15539719
申请日：2015-02-06
Applicant: SHIMADZU CORPORATION
Inventor： Junki Sakamoto , Ichiro Fukushi , Akiyuki Kadoya , Kazuma Watanabe , Naoya Ishigaki , Jiro Saikawa , Shingo Uno , Tomoyuki Hiroki , Koji Tojo
IPC: H01S5/024 , H01S5/40 , G02B6/42 , B23K26/342 , H01S5/022
Abstract: 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.
-
公开(公告)号：US10511144B2
公开(公告)日：2019-12-17
申请号：US16082938
申请日：2016-03-09
Applicant: SHIMADZU CORPORATION
Inventor： Shingo Uno , Tomoyuki Hiroki , Koji Tojo , Jiro Saikawa , Naoya Ishigaki , Junki Sakamoto
Abstract: The present invention comprises: a light-emitting element group configured from columns of serially connected light-emitting elements, one of the ends from each of the columns of the light-emitting elements being collectively connected to a power source; current control elements, provided to correspond to the columns, and being connected to each of the columns of the light-emitting elements at the other end thereof, for controlling the current flowing through the light-emitting elements; a forward voltage monitoring circuit for monitoring, for each of the columns, the total forward voltage across the light-emitting elements; and a control circuit for controlling the current control elements, on the basis of the total forward voltage across the light-emitting elements from each of the columns detected by the forward voltage monitoring circuit, in such a manner that the variations in the total forward voltage across the columns of the light-emitting elements reach a threshold value or lower.
-
公开(公告)号：US09746615B2
公开(公告)日：2017-08-29
申请号：US15310655
申请日：2014-06-17
Applicant: SHIMADZU CORPORATION
Inventor： Jiro Saikawa , Naoya Ishigaki , Shingo Uno , Tomoyuki Hiroki , Ichiro Fukushi , Akiyuki Kadoya , Junki Sakamoto , Koji Tojo , Kazuma Watanabe
CPC classification number: G02B6/32 , G02B6/02338 , G02B6/42 , G02B6/4206 , G02B6/43 , G02B27/123
Abstract: 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.
-
公开(公告)号：US09647422B1
公开(公告)日：2017-05-09
申请号：US15129061
申请日：2014-03-26
Applicant: SHIMADZU CORPORATION
Inventor： Tomoyuki Hiroki , Koji Tojo , Kazuma Watanabe , Ichiro Fukushi , Akiyuki Kadoya , Junki Sakamoto , Jiro Saikawa , Naoya Ishigaki , Shingo Uno
CPC classification number: H01S5/042 , B23K26/0613 , H01S5/0428 , H01S5/40 , H01S5/4012 , H01S5/4018 , H01S5/4025 , H01S5/42
Abstract: 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.
-
公开(公告)号：US10137526B2
公开(公告)日：2018-11-27
申请号：US15123904
申请日：2014-03-11
Applicant: SHIMADZU CORPORATION
Inventor： Junki Sakamoto , Ichiro Fukushi , Aklyuki Kadoya , Kazuma Watanabe , Jiro Saikawa , Naoya Ishigaki , Shingo Uno , Tomoyuki Hiroki , Koji Tojo
Abstract: 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.
-
-
-
-
-
-
Search Results
7
records
(took 0.015 seconds)
