公开(公告)号：US11363694B2

公开(公告)日：2022-06-14

申请号：US17387633

申请日：2021-07-28

申请人： Tsuyoshi Ueno ,  Yuuki Oka ,  Tetsuya Satoh ,  Seiya Abe

发明人： Tsuyoshi Ueno ,  Yuuki Oka ,  Tetsuya Satoh ,  Seiya Abe

IPC分类号： H05B45/30 ,  H05B45/37 ,  H05B45/325 ,  H05B45/375 ,  G09G3/00 ,  G09G3/32 ,  H05B45/14

摘要： A drive circuit 3 includes a power source 11; current control units 12-1 to 12-n configured to control the amount of currents supplied to a light emitting element in accordance with a pulse modulation signal; and a calculation unit 13 configured to change a duty ratio of a pulse modulation signal. The current control units 12-1 to 12-n include a first switching element 21 configured to be switched on/off in accordance with a pulse modulation signal; and a second switching element 22 configured to be switched on/off in accordance with an inversion signal of the pulse modulation signal input to the first switching element 21; and an inductor 23. The first switching element 21 and the inductor 23 are serially connected between the power source and the light emitting element. The second switching element 22 is connected between ground 25 and a contact point 24 of the first switching element 21 and the inductor 23. The two or more current control units 12-1 to 12-n are connected in parallel.

公开(公告)号：US20210360758A1

公开(公告)日：2021-11-18

申请号：US17387633

申请日：2021-07-28

申请人： Tsuyoshi UENO ,  Yuuki OKA ,  Tetsuya SATOH ,  Seiya ABE

发明人： Tsuyoshi UENO ,  Yuuki OKA ,  Tetsuya SATOH ,  Seiya ABE

IPC分类号： H05B45/375 ,  G09G3/00 ,  G09G3/32 ,  H05B45/325 ,  H05B45/14

摘要： A drive circuit 3 includes a power source 11; current control units 12-1 to 12-n configured to control the amount of currents supplied to a light emitting element in accordance with a pulse modulation signal; and a calculation unit 13 configured to change a duty ratio of a pulse modulation signal. The current control units 12-1 to 12-n include a first switching element 21 configured to be switched on/off in accordance with a pulse modulation signal; and a second switching element 22 configured to be switched on/off in accordance with an inversion signal of the pulse modulation signal input to the first switching element 21; and an inductor 23. The first switching element 21 and the inductor 23 are serially connected between the power source and the light emitting element. The second switching element 22 is connected between ground 25 and a contact point 24 of the first switching element 21 and the inductor 23. The two or more current control units 12-1 to 12-n are connected in parallel.

公开(公告)号：US10530123B2

公开(公告)日：2020-01-07

申请号：US15918154

申请日：2018-03-12

申请人： Yuuki Oka ,  Tsuyoshi Ueno ,  Seiya Abe

发明人： Yuuki Oka ,  Tsuyoshi Ueno ,  Seiya Abe

IPC分类号： H01S5/042 ,  H02M1/32 ,  H02M1/36 ,  H02M3/158 ,  H05B33/08

摘要： A drive circuit is configured to supply a current to a light emitting element. The drive circuit includes a plurality of switching elements configured to switch between ON/OFF states with a modulation signal, a capacitor connected in parallel with the light emitting element, and a control module configured to control the switching elements so that a voltage of the capacitor does not become lower than a threshold.

公开(公告)号：US11563304B2

公开(公告)日：2023-01-24

申请号：US17305606

申请日：2021-07-12

申请人： Yuuki Oka ,  Takumi Satoh ,  Tsuyoshi Ueno ,  Atsufumi Omori

发明人： Yuuki Oka ,  Takumi Satoh ,  Tsuyoshi Ueno ,  Atsufumi Omori

IPC分类号： H05B47/11 ,  H01S5/04 ,  H01S5/042 ,  G01S17/10 ,  G01S7/484

摘要： A lighting module includes a voltage-current controller to control power externally supplied, a capacitor charged with power supplied from the voltage-current controller, a laser light source to emit laser light driven by a current from the capacitor, first and second FETs electrically connected in series to the laser light source, and circuitry that controls a first voltage value applied to the first FET and a second voltage value applied to the second FET, to control a resistance value of the second FET. The first FET controls a pulse width of the current flowing through the laser light source in accordance with the first voltage value applied to a gate thereof. The second FET changes in resistance value in accordance with the second voltage value applied to a gate thereof and controls, with the resistance value, a peak value of the current flowing through the laser light source.

公开(公告)号：US20220299607A1

公开(公告)日：2022-09-22

申请号：US17687680

申请日：2022-03-07

申请人： Yuuki OKA ,  Kazuma IZUMIYA ,  Takumi SATOH

发明人： Yuuki OKA ,  Kazuma IZUMIYA ,  Takumi SATOH

IPC分类号： G01S7/481

摘要： A light source module, a distance-measuring apparatus, and a mobile object. The light source module includes a first substrate, a light source disposed on the first substrate to emit light, the light source having a first terminal and a second terminal, a field-effect transistor disposed on the first substrate, the field-effect transistor having a third terminal and a fourth terminal, and a charge storage unit disposed on the first substrate, the charge storage unit having a fifth terminal and a sixth terminal. In the light source module, the first terminal and the sixth terminal are coupled to each other, the second terminal and the third terminal are coupled to each other. In the light source module, the fourth terminal and the fifth terminal are at an equivalent electrical potential. The distance-measuring apparatus includes the light source module. The includes the distance-measuring apparatus.

公开(公告)号：US20220037853A1

公开(公告)日：2022-02-03

申请号：US17305606

申请日：2021-07-12

申请人： Yuuki Oka ,  Takumi Satoh ,  Tsuyoshi Ueno ,  Atsufumi Omori

发明人： Yuuki Oka ,  Takumi Satoh ,  Tsuyoshi Ueno ,  Atsufumi Omori

IPC分类号： H01S5/042 ,  H05B47/11 ,  G01S7/484 ,  G01S17/10

摘要： A lighting module includes a voltage-current controller to control power externally supplied, a capacitor charged with power supplied from the voltage-current controller, a laser light source to emit laser light driven by a current from the capacitor, first and second FETs electrically connected in series to the laser light source, and circuitry that controls a first voltage value applied to the first FET and a second voltage value applied to the second FET, to control a resistance value of the second FET. The first FET controls a pulse width of the current flowing through the laser light source in accordance with the first voltage value applied to a gate thereof. The second FET changes in resistance value in accordance with the second voltage value applied to a gate thereof and controls, with the resistance value, a peak value of the current flowing through the laser light source.

公开(公告)号：US20210124046A1

公开(公告)日：2021-04-29

申请号：US17076913

申请日：2020-10-22

申请人： Takumi SATOH ,  Yuuki OKA

发明人： Takumi SATOH ,  Yuuki OKA

IPC分类号： G01S17/04

摘要： A detection apparatus includes a light source device, including a plurality of light-emitting elements, configured to irradiate light onto a detection target by dividing an illuminance area into a plurality of illuminance regions; and circuitry configured to switch an illuminance level at each of the plurality of illuminance regions with a plurality of illuminance levels; detect a plurality of detection data of the detection target at the plurality of illuminance regions by switching the illuminance level at each of the plurality of illuminance regions with the plurality of illuminance levels when irradiating the light onto the detection target; and synthesize the plurality of detection data of the detection target.

公开(公告)号：US09964904B2

公开(公告)日：2018-05-08

申请号：US14226110

申请日：2014-03-26

申请人： Yuuki Oka ,  Yukari Isoe ,  Motokazu Hasegawa

发明人： Yuuki Oka ,  Yukari Isoe ,  Motokazu Hasegawa

IPC分类号： G03G15/20

CPC分类号： G03G15/2053

摘要： A fixing device includes a fixing member, which includes heat-generating layer, and an induction heater to inductively heat the fixing member. The induction heater includes an excitation coil disposed facing an outer circumferential surface of the fixing member to generate a magnetic flux, a ferromagnetic core assembly containing a ferromagnetic core to form a magnetic path to direct the magnetic flux generated by the excitation coil to the fixing member, and a holder to hold the excitation coil and the ferromagnetic core assembly. The ferromagnetic core is insert-molded in and covered by the holder. The holder has a plurality of spherical marks created by a plurality of stabilizing members each having a spherical tip to stabilize the ferromagnetic core in a mold.

公开(公告)号：US09128449B2

公开(公告)日：2015-09-08

申请号：US14314112

申请日：2014-06-25

申请人： Masataka Akaishi ,  Tsuyoshi Ueno ,  Motokazu Hasegawa ,  Yuuki Oka

发明人： Masataka Akaishi ,  Tsuyoshi Ueno ,  Motokazu Hasegawa ,  Yuuki Oka

IPC分类号： G03G15/00 ,  G03G15/20

CPC分类号： G03G15/80 ,  G03G15/2014 ,  G03G15/2042 ,  G03G15/2053

摘要： A fixing device includes a heating body; first and second coils for induction heating that heat the heating body by an induction heating method; a first switching element connected to the first coil for induction heating; a second switching element connected to the second coil for induction heating; a driving signal transmission unit that sends a first drive signal to the first switching element and a second drive signal to the second switching element so that the first switching element and the second switching element operate at the same timing to apply a first input voltage to the first coil for induction heating and a second input voltage to the second coil for induction heating; and a voltage drop unit that steps down the first input voltage applied to the first coil for induction heating so that the first input voltage is lower than the second input voltage.

摘要翻译： 定影装置包括加热体; 用于通过感应加热方法加热加热体的感应加热用的第一和第二线圈; 连接到用于感应加热的第一线圈的第一开关元件; 连接到用于感应加热的第二线圈的第二开关元件; 驱动信号传输单元，其向第一开关元件发送第一驱动信号和向第二开关元件发送第二驱动信号，使得第一开关元件和第二开关元件在相同的定时工作，以将第一输入电压施加到 用于感应加热的第一线圈和用于感应加热的第二线圈的第二输入电压; 以及降压单元，其降低施加到第一线圈的感应加热的第一输入电压，使得第一输入电压低于第二输入电压。

公开(公告)号：US20140305925A1

公开(公告)日：2014-10-16

申请号：US14226110

申请日：2014-03-26

申请人： Yuuki OKA ,  Yukari ISOE ,  Motokazu HASEGAWA

发明人： Yuuki OKA ,  Yukari ISOE ,  Motokazu HASEGAWA

IPC分类号： H05B3/00 ,  G03G15/20

CPC分类号： G03G15/2053

摘要： A fixing device includes a fixing member, which includes heat-generating layer, and an induction heater to inductively heat the fixing member. The induction heater includes an excitation coil disposed facing an outer circumferential surface of the fixing member to generate a magnetic flux, a ferromagnetic core assembly containing a ferromagnetic core to form a magnetic path to direct the magnetic flux generated by the excitation coil to the fixing member, and a holder to hold the excitation coil and the ferromagnetic core assembly. The ferromagnetic core is insert-molded in and covered by the holder. The holder has a plurality of spherical marks created by a plurality of stabilizing members each having a spherical tip to stabilize the ferromagnetic core in a mold.

摘要翻译： 定影装置包括包括发热层的固定构件和感应加热固定构件的感应加热器。 所述感应加热器包括面向所述固定部件的外周面的励磁线圈，以产生磁通;铁磁芯组件，其包含铁磁芯，以形成磁路以将由所述励磁线圈产生的磁通引导到所述固定部件 和保持激励线圈和铁磁芯组件的保持器。 铁磁芯被嵌入成型并被保持器覆盖。 保持器具有由多个稳定构件产生的多个球形标记，每个稳定构件均具有球形尖端，以将铁磁芯稳定在模具中。