公开(公告)号：US20080192319A1

公开(公告)日：2008-08-14

申请号：US12025343

申请日：2008-02-04

申请人： Naoki Miyatake ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Naoto Watanabe ,  Daisuke Ichii

发明人： Naoki Miyatake ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Naoto Watanabe ,  Daisuke Ichii

IPC分类号： G02B26/08

CPC分类号： G02B26/123

摘要： An optical scanning device includes a coupling optical system, a light source including a plurality of light emitting units for emitting light beams, and a deflector including a deflecting surface for deflecting the light beams. The coupling optical system is arranged on an optical path between the light source and the deflector so that the light beams enter the deflector at an angle with respect to a normal direction of the deflecting surface in a sub-scanning direction. The light emitting units are arranged two-dimensionally, and a distance between two light emitting units at opposite ends in a main scanning direction is smaller than a distance between two light emitting units at opposite ends in the sub-scanning direction.

摘要翻译： 光学扫描装置包括耦合光学系统，包括用于发射光束的多个发光单元的光源和包括用于偏转光束的偏转表面的偏转器。 耦合光学系统布置在光源和偏转器之间的光路上，使得光束在副扫描方向上相对于偏转表面的法线方向以一定角度进入偏转器。 发光单元被二维地布置，并且主扫描方向的相对端的两个发光单元之间的距离小于在副扫描方向的相对端的两个发光单元之间的距离。

公开(公告)号：US20080055692A1

公开(公告)日：2008-03-06

申请号：US11844643

申请日：2007-08-24

申请人： Kenichiroh Saisho ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Kohji Sakai ,  Daisuke Ichii

发明人： Kenichiroh Saisho ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Kohji Sakai ,  Daisuke Ichii

IPC分类号： G02B26/10 ,  G02F1/00

CPC分类号： G02B26/124 ,  G02B5/1876 ,  H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744

摘要： A coupling lens arranged on an optical path of an optical beam from a VCSEL, which has a refraction plane and a diffraction plane that respectively change a power according to a temperature change and suppresses a beam-waist position change in a main-scanning direction and a sub-scanning directions on the scanning surface caused by the temperature change, by a wavelength change of the optical beam caused by power changes of the refraction plane and the diffraction plane and the temperature change. A deflecting unit deflects the optical beam that passed through the coupling lens. A scanning optical system condenses a deflected optical beam on the scanning surface.

摘要翻译： 耦合透镜，布置在来自VCSEL的光束的光路上，所述光束具有根据温度变化分别改变功率的折射面和衍射面，并抑制主扫描方向上的束腰位置变化， 通过由折射平面和衍射面的功率变化引起的光束的波长变化和温度变化，由温度变化引起的扫描表面上的副扫描方向。 偏转单元使通过耦合透镜的光束偏转。 扫描光学系统将偏转的光束冷凝在扫描表面上。

公开(公告)号：US07336047B2

公开(公告)日：2008-02-26

申请号：US11522337

申请日：2006-09-18

申请人： Takeshi Ueda ,  Shigeki Nagase

发明人： Takeshi Ueda ,  Shigeki Nagase

IPC分类号： B62D5/04 ,  B62D6/00

CPC分类号： B62D5/046 ,  H02P6/28

摘要： A motor vehicle steering system includes a motor driving circuit connected between a power supply and a ground for driving a multi-phase motor, PWM signal generating unit for generating an each-phase PWM signal for controlling a current flowing through each of phases of the multi-phase motor and feeding the each-phase PWM signal to the motor driving circuit, a single current sensor connected between the motor driving circuit and the power supply or the ground, and each-phase current value computing unit for finding an each-phase current value flowing through each of the phases of the multi-phase motor on the basis of an output of the current sensor. The PWM signal generating unit shifts the fall or rise timing of a carrier wave of the each-phase PWM signal by a predetermined phase shift amount.

摘要翻译： 机动车辆转向系统包括连接在用于驱动多相电动机的电源和接地之间的电动机驱动电路，PWM信号产生单元，用于产生用于控制流过多相电动机的每个相的电流的每相PWM信号 将每相PWM信号馈送到电动机驱动电路，连接在电动机驱动电路和电源或地之间的单个电流传感器，以及每相电流值计算单元，用于求出各相电流 基于电流传感器的输出流过多相电机的各相的值。 PWM信号生成单元将各相PWM信号的载波的下降或上升定时移位预定的相移量。

公开(公告)号：US20080024589A1

公开(公告)日：2008-01-31

申请号：US11773076

申请日：2007-07-03

申请人： Takeshi Ueda ,  Kohji Sakai ,  Yoshinori Hayashi

发明人： Takeshi Ueda ,  Kohji Sakai ,  Yoshinori Hayashi

IPC分类号： G02B26/10

CPC分类号： G02B26/123 ,  G02B26/124 ,  G02B26/125

摘要： A multi-beam scanning device is disclosed that is able to realize a stable and small beam spot and realize stable scanning line intervals between plural light beams. The multi-beam optical scanning device includes a first optical system which has a first lens for coupling the light beams from the light sources, and a second lens which is an anamorphic element having power at least in a sub scanning direction and for guiding the light beams from the first lens to the deflection unit; and a second optical system. At least the second lens includes a diffracting surface having power. Magnifications of the whole optical system in a main scanning direction (βm0) and in a sub scanning direction (βs0), and a magnification of the second optical system (βs2) in a sub scanning direction satisfy |βm0|>|βs0|, and |βs0|>|s2|, and the power of the diffracting surface of the first lens in the main scanning direction (P1m), that in the sub scanning direction (P1s), and the power of the diffracting surface of the second lens in the sub scanning direction (P2s) satisfy |P2s|>|P1m| and |P2s|>|P1s|.

摘要翻译： 公开了一种多光束扫描装置，其能够实现稳定且小的光点，并实现多个光束之间的稳定的扫描线间隔。 多光束光学扫描装置包括第一光学系统，其具有用于耦合来自光源的光束的第一透镜和作为至少在副扫描方向上具有功率并用于引导光的变形元件的第二透镜 从第一透镜到偏转单元的光束; 和第二光学系统。 至少第二透镜包括具有光焦度的衍射表面。 整个光学系统在主扫描方向（反射0）和副扫描方向（betas 0）上的放大率以及副扫描方向上的第二光学系统（betas 2）的倍率满足| beta s 0 | ，| betas 0 |> | s 2 | ，以及第一透镜的衍射面在主扫描方向（P 1 m），副扫描方向（P 1 s）上的功率和第二透镜在副扫描中的衍射面的光焦度 方向（P 2 s）满足| P 2 s |> | P 1 m | 和| P 2 s |> | P 1 s |。

公开(公告)号：US20070205041A1

公开(公告)日：2007-09-06

申请号：US11579902

申请日：2005-05-09

申请人： Katsutoshi Nishizaki ,  Shirou Nakano ,  Ken Matsubara ,  Toshiaki Oya ,  Yasuhiro Kamatani ,  Masahiko Sakamaki ,  Yoshikazu Kuromaru ,  Shigeki Nagase ,  Takayasu Yamazaki ,  Yasuhiro Saitou ,  Takeshi Ueda

发明人： Katsutoshi Nishizaki ,  Shirou Nakano ,  Ken Matsubara ,  Toshiaki Oya ,  Yasuhiro Kamatani ,  Masahiko Sakamaki ,  Yoshikazu Kuromaru ,  Shigeki Nagase ,  Takayasu Yamazaki ,  Yasuhiro Saitou ,  Takeshi Ueda

IPC分类号： G06F17/00

CPC分类号： B62D6/10 ,  B62D5/0472

摘要： An electric power steering system is provided which is capable of providing a favorable steering feeling without using compensation logics such as of inertia compensation and friction compensation. The electric power steering system includes road-noise suppression control means (213) for controlling a steering assist motor (9) in a manner to damp torque transmission in a higher frequency region representing road noises than a frequency region representing road information. A friction value of a steering mechanism (A) is decreased enough to allow the intrinsic vibrations of the steering mechanism (A) to appear. Rotor inertia of the steering assist motor (9) is set to a value small enough to allow the frequencies of the intrinsic vibrations to be present in the frequency region where the torque transmission is damped by the road-noise suppression control means (213).

摘要翻译： 提供一种电动助力转向系统，其能够在不使用惯性补偿和摩擦补偿等补偿逻辑的情况下提供良好的转向感。 电动助力转向系统包括道路噪声抑制控制装置，用于以比表示道路信息的频率区域更低的代表道路噪声的较高频率区域的方式来控制转向辅助电动机（9）。 转向机构（A）的摩擦值减小到足以使转向机构（A）的固有振动出现。 将转向辅助马达（9）的转子惯量设定为足够小的值，以使固有振动的频率存在于由道路噪声抑制控制装置（213）阻尼转矩传递的频率区域中。

公开(公告)号：US20070182355A1

公开(公告)日：2007-08-09

申请号：US11702928

申请日：2007-02-05

申请人： Takeshi Ueda ,  Shigeki Nagase

发明人： Takeshi Ueda ,  Shigeki Nagase

IPC分类号： G05B11/28

CPC分类号： H02P21/22 ,  H02P6/28 ,  H02P6/34

摘要： A motor controller judges whether or not a duty cycle of a PWM control signal, which is used to open and close a switching element on a power supply line to a motor, is in a current detection permission region. When the duty cycle is in the current detection permission region, an impedance is determined in time series via a calculation based on a predetermined relationship between a current, a terminal voltage, a speed electromotive force, and an impedance of a coil constituting an armature winding, and the output of the motor is controlled so as to reduce the deviation between a current target value and a value corresponding to a detected current. When the duty cycle is not in the current detection permission region, the output of the motor is controlled so as to reduce the deviation between the current target value and a value corresponding to a current determined via a calculation based on the latest determined impedance.

摘要翻译： 电机控制器判断用于打开和关闭电动机的电源线上的开关元件的PWM控制信号的占空比是否在电流检测允许区域中。 当占空比处于电流检测许可区域时，通过基于电流，端子电压，速度电动势和构成电枢绕组的线圈的阻抗之间的预定关系的计算，以时间序列确定阻抗 并且控制电动机的输出以便减小当前目标值与对应于检测电流的值之间的偏差。 当占空比不在当前检测许可区域时，电动机的输出被控制，以便减小当前目标值与通过基于最新确定的阻抗的计算确定的电流相对应的值之间的偏差。

公开(公告)号：US07253937B2

公开(公告)日：2007-08-07

申请号：US11543212

申请日：2006-10-05

申请人： Takeshi Ueda ,  Kohji Sakai ,  Yoshinori Hayashi

发明人： Takeshi Ueda ,  Kohji Sakai ,  Yoshinori Hayashi

IPC分类号： G02B26/08 ,  B41J27/00

CPC分类号： G02B26/123 ,  G02B26/124 ,  G02B26/125

摘要： A multi-beam scanning device is disclosed that is able to realize a stable and small beam spot and realize stable scanning line intervals between plural light beams. The multi-beam optical scanning device includes a first optical system which has a first lens for coupling the light beams from the light sources, and a second lens which is an anamorphic element having power at least in a sub scanning direction and for guiding the light beams from the first lens to the deflection unit; and a second optical system. At least the second lens includes a diffracting surface having power. Magnifications of the whole optical system in a main scanning direction (βm0) and in a sub scanning direction (βs0), and a magnification of the second optical system (βs2) in a sub scanning direction satisfy |βm0|>|βs0|, and |βs0|>|βs2|, and the power of the diffracting surface of the first lens in the main scanning direction (P1m), that in the sub scanning direction (P1s), and the power of the diffracting surface of the second lens in the sub scanning direction (P2s) satisfy |P2s|>|P1m| and |P2s|>|P1s|.

摘要翻译： 公开了一种多光束扫描装置，其能够实现稳定且小的光点，并实现多个光束之间的稳定的扫描线间隔。 多光束光学扫描装置包括第一光学系统，其具有用于耦合来自光源的光束的第一透镜和作为至少在副扫描方向上具有功率并用于引导光的变形元件的第二透镜 从第一透镜到偏转单元的光束; 和第二光学系统。 至少第二透镜包括具有光焦度的衍射表面。 整个光学系统在主扫描方向（BETam 0）和副扫描方向（betas 0）上的放大率以及副扫描方向上的第二光学系统（betas 2）的倍率满足| betam 0 |> | betas 0 |和| betas 0 |> | betas 2 |，第一透镜的衍射面在主扫描方向（P 1 m），副扫描方向（P 1 s）和 第二透镜的副扫描方向（P 2 s）的衍射面的功率满足| P 2 s |> | P 1 m | 和| P 2 s |> | P 1 s |。

公开(公告)号：US20070097474A1

公开(公告)日：2007-05-03

申请号：US11566591

申请日：2006-12-04

申请人： Taku AMADA ,  Takeshi Ueda

发明人： Taku AMADA ,  Takeshi Ueda

IPC分类号： G02B26/08

CPC分类号： H04N1/40006 ,  B41J2/473 ,  G02B26/123 ,  G02B26/127 ,  H04N1/0473 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N1/40031 ,  H04N1/40037 ,  H04N1/4005 ,  H04N1/40056 ,  H04N2201/04765

摘要： A light scanning apparatus that scans a scanned face with a light beam includes an adjusting unit that adjusts the position of a light spot of the light beam formed on the scanned face, and a compensating unit that compensates the light intensity of the light beam at the scanned face due to change caused by the adjustment of the position of the light spot. Accordingly, the light scanning apparatus can reduce or eliminate the deviation in exposure between scan lines of the multi-beam scan method and the deviation in exposure between photosensitive bodies of the tandem type image forming apparatus.

摘要翻译： 用光束扫描扫描面的光扫描装置包括：调节单元，其调节形成在扫描面上的光束的光点的位置;以及补偿单元，其补偿在扫描面上形成的光束的光强度 扫描面由于光斑位置调整引起的变化。 因此，光扫描装置可以减少或消除多光束扫描方法的扫描线之间的曝光偏差和串联型图像形成装置的感光体之间的曝光偏差。

公开(公告)号：US20070091398A1

公开(公告)日：2007-04-26

申请号：US11543212

申请日：2006-10-05

申请人： Takeshi Ueda ,  Kohji Sakai ,  Yoshinori Hayashi

发明人： Takeshi Ueda ,  Kohji Sakai ,  Yoshinori Hayashi

IPC分类号： G02B5/32

CPC分类号： G02B26/123 ,  G02B26/124 ,  G02B26/125

摘要： A multi-beam scanning device is disclosed that is able to realize a stable and small beam spot and realize stable scanning line intervals between plural light beams. The multi-beam optical scanning device includes a first optical system which has a first lens for coupling the light beams from the light sources, and a second lens which is an anamorphic element having power at least in a sub scanning direction and for guiding the light beams from the first lens to the deflection unit; and a second optical system. At least the second lens includes a diffracting surface having power. Magnifications of the whole optical system in a main scanning direction (βm0) and in a sub scanning direction (βs0), and a magnification of the second optical system (βs2) in a sub scanning direction satisfy |βm0|>|βs0|, and |βs0|>|βs2|, and the power of the diffracting surface of the first lens in the main scanning direction (P1m), that in the sub scanning direction (P1s), and the power of the diffracting surface of the second lens in the sub scanning direction (P2s) satisfy |P2s|>|P1m| and |P2s|>|P1s|.

公开(公告)号：US07145589B2

公开(公告)日：2006-12-05

申请号：US10617033

申请日：2003-07-11

申请人： Taku Amada ,  Takeshi Ueda

发明人： Taku Amada ,  Takeshi Ueda

IPC分类号： B41J27/00

CPC分类号： H04N1/40006 ,  B41J2/473 ,  G02B26/123 ,  G02B26/127 ,  H04N1/0473 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N1/40031 ,  H04N1/40037 ,  H04N1/4005 ,  H04N1/40056 ,  H04N2201/04765

摘要： A light scanning apparatus that scans a scanned face with a light beam includes an adjusting unit that adjusts the position of a light spot of the light beam formed on the scanned face, and a compensating unit that compensates the light intensity of the light beam at the scanned face due to change caused by the adjustment of the position of the light spot. Accordingly, the light scanning apparatus can reduce or eliminate the deviation in exposure between scan lines of the multi-beam scan method and the deviation in exposure between photosensitive bodies of the tandem type image forming apparatus.