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    • 2. 发明授权
    • Light scanning device
    • 光扫描装置
    • US5469289A
    • 1995-11-21
    • US253562
    • 1994-06-03
    • Naoto IwaoShoji Yamada
    • Naoto IwaoShoji Yamada
    • F16C32/04F16C39/06G02B26/12G02B26/08
    • F16C32/0442F16C32/0457G02B26/121F16C2231/00
    • The rotational shaft 22 is provided with a pair of permanent magnets 31a and 31b, at its opposite ends. The bearing device 30 for the light scanning apparatus includes: a pair of electromagnets 32a and 32b; and a pair of voltage control circuits 33a and 33b. The electromagnet 32a is constructed from an iron core 321a provided with a coil 322a. Similarly, the electromagnet 32b is constructed from an iron core 321b provided with a coil 322b. When the rotational number increases to exceed a predetermined rotational number, the control signal generating circuit 53 switches the electric voltage applied through each of the coils 322a and 322b so as to switch the bearing stiffness of the bearing device. As a result, the resonant frequencies of the conical and cylindrical modes become much lower than the present actual rotational number .omega.0 of the rotational shaft. Accordingly, it is possible to prevent the rotational shaft from exhibiting any of the conical and cylindrical mode resonant actions.
    • 旋转轴22在其相对端设置有一对永磁体31a和31b。 用于光扫描装置的轴承装置30包括:一对电磁体32a和32b; 和一对电压控制电路33a,33b。 电磁体32a由具有线圈322a的铁芯321a构成。 类似地,电磁体32b由设置有线圈322b的铁芯321b构成。 当旋转数增加到超过预定旋转数时,控制信号发生电路53切换通过每个线圈322a和322b施加的电压,以便切换轴承装置的轴承刚度。 结果,锥形和圆柱形模式的谐振频率变得远低于旋转轴的当前实际旋转数ω0。 因此,可以防止旋转轴呈现任何锥形和圆柱形共振动作。
    • 5. 发明授权
    • Piezoelectric transducer and an ultrasonic motor using the piezoelectric
transducer
    • 压电传感器和使用压电传感器的超声波电机
    • US5032753A
    • 1991-07-16
    • US485557
    • 1990-02-27
    • Masaki YamaguchiShoji YamadaNaoto Iwao
    • Masaki YamaguchiShoji YamadaNaoto Iwao
    • H01L41/04H01L41/09H02N2/16
    • H02N2/004H02N2/001H02N2/008H02N2/026H02N2/103
    • In the piezoelectric transducer, the elastic member vibrates, being excited by the first electromechanical transducing element. The impedance element on the second electromechanical transducing element is adjusted so that the vibration frequency and the resonance frequency of the elastic member should be almost the same. In the ultrasonic motor using the piezoelectric transducer, the vibration having the same frequency as that of the vibration of the elastic member is applied to the elastic member. This applied vibration has a direction differnt from that of the viration of the elastic member. The applied vibration and the vibration of the elastic member form approximate elliptical vibration, thereby rotating the rotor. The piezoelectric transducer of variable structure can control the resonance frequency in a wide range without electric power. The piezoelectric transducer can efficiently transduce applied electricity into approximate elliptical vibration of the elastic member, thereby generating great mechanical drive power. The electromechanical transducing element and the impedance element can compose a simple and compact vibration control unit. Since the electromechanical transcuding element and the impedance element form a closed circuit consuming no electric power, no power source circuit is required. The vibration control unit adjusts the resonance characteristic of the closed circuit, thus quantitatively controlling the frequency distribution and the amplitude of the mechanical vibration.
    • 在压电换能器中,弹性构件由第一机电换能元件激励。 调整第二机电换能元件上的阻抗元件,使弹性部件的振动频率和共振频率几乎相同。 在使用压电换能器的超声波马达中,与弹性部件的振动频率相同的振动施加到弹性部件。 该施加的振动的方向与弹性构件的病毒方向不同。 所施加的振动和弹性构件的振动形成近似的椭圆振动,从而旋转转子。 可变结构的压电换能器可以在没有电力的情况下在宽范围内控制谐振频率。 压电换能器可以有效地将施加的电力转换成弹性构件的近似椭圆振动,由此产生很大的机械驱动力。 机电传感元件和阻抗元件可以组成一个简单紧凑的振动控制单元。 由于机电转换元件和阻抗元件形成不消耗电力的闭路,因此不需要电源电路。 振动控制单元调节闭路的谐振特性,从而定量地控制机械振动的频率分布和振幅。
    • 7. 发明授权
    • Apparatus and method for virtual retinal display capable of controlling presentation of images to viewer in response to viewer's motion
    • 用于虚拟视网膜显示的装置和方法,其能够响应于观看者的运动控制向观看者呈现图像
    • US07825996B2
    • 2010-11-02
    • US11413046
    • 2006-04-28
    • Shoji YamadaYasufumi Mase
    • Shoji YamadaYasufumi Mase
    • H04N5/64H04N7/00
    • G02B27/017G02B27/0172G02B2027/0178G02B2027/0187H04N5/7491
    • An apparatus is disclosed which projects light onto a retina of a viewer, to thereby allow the viewer to perceive a display object via a virtual image. The apparatus includes: an emitter emitting light; a modulator modulating the light; a display unit outputting the modulated light to the retina of the viewer through an exit of the display unit, to thereby display in an image display region an image representative of the display object in the form of a virtual image; and a controller controlling the emitter and the modulator so that the image is displayed in the image display region. The controller detects a relative motion of the viewer with respect to a position of the viewer, and performs at least one of control of a display/non-display status of the image, and control of a display position of the image, in accordance with the detected relative motion.
    • 公开了一种将光投射到观看者的视网膜上的设备,从而允许观看者通过虚拟图像感知显示对象。 该装置包括:发射光的发射器; 调制光的调制器 显示单元,通过显示单元的出口将调制的光输出到观看者的视网膜,从而以虚拟图像的形式在图像显示区域中显示代表显示对象的图像; 以及控制发射器和调制器的控制器,使得图像显示在图像显示区域中。 控制器检测观看者相对于观看者的位置的相对运动,并且根据图像的显示/非显示状态的控制和图像的显示位置的控制中的至少一个,根据 检测到的相对运动。
    • 8. 发明申请
    • Axial Flow Fan
    • 轴流风机
    • US20090004019A1
    • 2009-01-01
    • US12114020
    • 2008-05-02
    • Kiyonori KogaShoji Yamada
    • Kiyonori KogaShoji Yamada
    • F01D5/12
    • F04D29/384Y10S416/02Y10S416/05
    • An axial flow fan is provided having an airfoil shape that improves efficiency of the axial flow fan and increases the structural strength and workability/formability of the thin trailing edge portion. The axial flow fan includes a blade having a suction surface, a pressure surface, and a trailing edge surface; the suction surface has the same in shape as a predetermined airfoil including an NACA-series airfoil; a trailing edge portion on the pressure surface is different in shape from the predetermined airfoil. A feature is that the blade trailing edge portion including the trailing edge portions on the oppositely facing pressure and suction surfaces and the trailing edge, has a thickness greater than that of a trailing edge portion of the predetermined airfoil and strength equaling or exceeding a predetermined strength.
    • 提供一种具有翼型形状的轴流式风扇,其提高轴流风扇的效率,并且增加了薄后缘部分的结构强度和可加工性/可成形性。 轴流风扇包括具有吸力表面,压力表面和后缘表面的叶片; 抽吸面具有与包括NACA系列翼型件的预定翼型相同的形状; 压力表面上的后缘部分的形状与预定的翼型不同。 其特征在于,包括在相对面对的压力和吸力表面和后缘上的后缘部分的叶片后缘部分的厚度大于预定翼型件的后缘部分的厚度,并且强度等于或超过预定强度 。
    • 9. 发明授权
    • Electronic connector terminal, a method for plating, and a terminal stack
    • 电子连接器端子,电镀方法和端子叠层
    • US07140929B2
    • 2006-11-28
    • US11167518
    • 2005-06-27
    • Shoji Yamada
    • Shoji Yamada
    • H01R13/02
    • H01R13/03
    • An electronic connector terminal and its method of formation comprising a terminal base material 2 formed from a thin metal plate including and a high cost metal plating layer 17, which covers the terminal base material 2. The terminal base material 2 is preferably formed by punching from the thin plate and includes an outer peripheral edge or lateral part 4 having at least one contact 6, and planer parts 5 defined by front and back surfaces of the punched-out piece. The high cost metal plating layer 17 on the planer parts 5 has a lesser thickness than the thickness of a high cost metal plating layer 17 on the lateral part 4.
    • 一种电子连接器端子及其形成方法,包括由薄金属板形成的端子基材2和覆盖端子基材2的高成本金属镀层17。 端子基材2优选通过从薄板冲压而形成,并且包括具有至少一个触点6的外周边缘或侧部4以及由冲压件的前表面和后表面限定的刨床部件5。 平面部5上的高成本金属镀层17的厚度比侧面部件4上的高成本金属镀层17的厚度小。
    • 10. 发明申请
    • Virtual retinal display generating principal virtual image of object and auxiliary virtual image for additional function
    • 虚拟视网膜显示生成主体虚拟图像的对象和辅助虚拟图像的附加功能
    • US20060146125A1
    • 2006-07-06
    • US11368378
    • 2006-03-07
    • Shoji Yamada
    • Shoji Yamada
    • H04N13/04H04N15/00
    • H04N3/08G02B27/017G09G3/00
    • An apparatus for projecting modulated light onto a retina of a viewer, to thereby allow the viewer to perceive a display object via a virtual image is disclosed. The apparatus is configured to include: an emitter emitting light; a modulator modulating the light; and a controller controlling the emitter and the modulator for generating virtual images to be perceived by the viewer in an image display field. The controller is operated, such that a principal virtual image defining the display object is perceived by the viewer in a principal display region of the image display field, and such that an auxiliary virtual image is perceived by the viewer together with the principal virtual image, in an auxiliary display region which is located in the image display field in a predetermined positional relationship with the principal display region, as viewed from the viewer.
    • 公开了一种用于将调制光投影到观看者的视网膜上,从而允许观看者通过虚像观察显示对象的装置。 该装置被配置为包括:发射光的发射器; 调制光的调制器 以及控制发射器和调制器的控制器,用于生成在图像显示区域中由观察者感知的虚拟图像。 控制器被操作,使得定义显示对象的主要虚拟图像被观看者在图像显示区域的主要显示区域中感知,并且使得辅助虚拟图像与主要虚拟图像一起被观察者感知, 在从观察者观察的位置处于与主显示区域以预定位置关系位于图像显示区域中的辅助显示区域中。