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    • 74. 发明授权
    • Polygonal mirror unit, light scanning unit, and image forming apparatus employing the same
    • 多角镜单元,光扫描单元和使用该多边形反射镜单元的成像设备
    • US07262896B2
    • 2007-08-28
    • US11211685
    • 2005-08-26
    • Sang-hoon LeeHyun-surk Kim
    • Sang-hoon LeeHyun-surk Kim
    • G02B26/08
    • G02B1/18G02B5/09G02B26/12G02B27/0006
    • A polygonal mirror unit is adapted to prevent contamination using a photocatalyst, a light scanning unit, and an image forming apparatus employing the polygonal mirror. The polygonal mirror unit is designed to prevent contamination of organic materials on a reflective surface. The polygonal mirror unit includes a driving device and a polygonal mirror having a reflective surface that is rotated by the driving device and deflects and scans an incident beam. The polygonal mirror has a main body with a plurality of reflective surfaces and photocatalytic layers formed on the plurality of reflective surfaces. The photocatalytic layers are activated by an incident beam of a predetermined wavelength to decompose organic materials on the reflective surfaces.
    • 多棱镜单元适于使用光催化剂,光扫描单元和使用多面镜的图像形成装置来防止污染。 多面镜单元被设计成防止有机材料在反射表面上的污染。 多面镜单元包括驱动装置和多面镜,其具有由驱动装置旋转的偏转和扫描入射光束的反射表面。 所述多面镜具有主体,所述主体具有多个反射表面和形成在所述多个反射表面上的光催化层。 光催化层由预定波长的入射光束激发,以分解反射表面上的有机材料。
    • 76. 发明授权
    • Apparatus and method of driving high-efficiency plasma display panel
    • 驱动高效等离子体显示面板的装置和方法
    • US07209099B2
    • 2007-04-24
    • US10673417
    • 2003-09-30
    • Chung-wook RohSang-hoon LeeHye-jeong Kim
    • Chung-wook RohSang-hoon LeeHye-jeong Kim
    • G09G3/28
    • G09G3/2965G09G3/294G09G2310/066
    • Provided are an apparatus and a method of driving a high-efficiency plasma display panel for quickly eliminating a free-wheeling current, generated due to the parasitic effect in an energy recovery circuit, thereby improving energy recovery efficiency. The sustain-discharge driving device of a high-efficiency plasma display panel (PDP) includes a sustain-discharge switching unit, which connects charging and discharging paths of an energy recovery unit to the PDP according to a sustain-discharge sequence, and includes an energy recovery unit which, according to an energy recovery sequence, discharges energy of the PDP to an energy accumulation device through a resonance path while in discharging mode, charges the PDP with the energy accumulated in the energy accumulation device through a resonance path while in charging mode, and forms a closed circuit in which the voltage difference between both ends of an inductor is greater than a predetermined value so as to eliminate a free-wheeling current, which is generated in the inductor of the resonance path due to a parasitic effect, during mode transition.
    • 提供了驱动高效等离子体显示面板的装置和方法,用于快速消除由于能量回收电路中的寄生效应而产生的续流电流,从而提高能量回收效率。 高效等离子体显示面板(PDP)的维持放电驱动装置包括维持放电切换单元,其根据维持放电顺序将能量回收单元的充电和放电路径连接到PDP,并且包括 能量回收单元,其根据能量回收顺序,在放电模式下通过谐振路径将能量放电到能量积聚装置,同时在充电期间通过谐振路径以积累在能量积聚装置中的能量对PDP充电 模式,并且形成闭合电路,其中电感器两端之间的电压差大于预定值,以消除由于寄生效应而在谐振路径的电感器中产生的续流电流, 在模式转换期间。
    • 77. 发明申请
    • Dynamic bearing and beam deflecting apparatus employing the same
    • 采用该轴承的动态轴承和梁偏转装置
    • US20060001939A1
    • 2006-01-05
    • US11154518
    • 2005-06-17
    • Sang-hoon LeeHyun-surk Kim
    • Sang-hoon LeeHyun-surk Kim
    • G02B26/08
    • F16C33/107F16C17/026F16C39/063G02B26/121
    • A dynamic bearing with an improved thrust bearing and a beam deflecting apparatus employing the same are disclosed. The dynamic bearing includes a bearing housing having a hollow cavity. A shaft is provided in the hollow cavity so that the shaft can rotate with respect to the bearing housing. First and second magnets are disposed at one end of the shaft and the hollow cavity, respectively. The first and second magnets are spaced a predetermined gap from each other and face each other. The first and second magnets generate a magnetic, repulsive force and support the shaft, without contact, in the axial and radial directions. The dynamic bearing may be used in a beam deflecting apparatus. In that case, a driving source is installed, in parts, on the bearing housing and the rotating shaft. The driving source drives the rotating shaft to rotate by electromagnetic force. A beam deflecting device is installed on the rotating shaft for deflecting an incident beam and performing a scanning operation.
    • 公开了一种具有改进的推力轴承的动态轴承和采用该轴承的梁偏转装置。 动态轴承包括具有中空腔的轴承壳体。 在中空空腔中设置有轴,使得轴可以相对于轴承壳体旋转。 第一和第二磁体分别设置在轴和中空腔的一端。 第一和第二磁体彼此隔开预定的间隙并相互面对。 第一和第二磁体在轴向和径向方向产生磁力排斥力并且支撑轴而不接触。 动力轴承可以用在梁偏转装置中。 在这种情况下,驱动源部分地安装在轴承壳体和旋转轴上。 驱动源通过电磁力驱动旋转轴旋转。 光束偏转装置安装在旋转轴上,用于偏转入射光束并执行扫描操作。
    • 78. 发明申请
    • Plasma display panel sustain driver having decreased flywheel current
    • 具有降低的飞轮电流的等离子体显示面板维持驱动器
    • US20050029960A1
    • 2005-02-10
    • US10888001
    • 2004-07-12
    • Chung-wook RohSang-hoon Lee
    • Chung-wook RohSang-hoon Lee
    • H04N5/66G09G3/20G09G3/288G09G3/291G09G3/294G09G3/296G09G3/10
    • G09G3/2965G09G3/294G09G2310/066
    • A plasma display panel sustain driver that has a decreased flywheel current. The plasma display panel sustain driver includes a power recovery capacitor that provides a predetermined voltage to the plasma display panel; a sustain switching unit connected to the plasma display panel and that sustains or discharges the voltage charged in the plasma display panel; a first power recovery unit connected between the power recovery capacitor and sustain switching unit, the first power recovery unit forming a resonant circuit together with the plasma display panel to provide a voltage charged in the power recovery capacitor to the plasma display panel through the sustain switching unit when the sustain switching unit is inactivated, the first power recovery unit blocking the output current of the sustain switching unit when the sustain switching unit is activated; and a second power recovery unit connected between the power recovery capacitor and sustain switching unit, the second power recovery unit forming a resonant circuit together with the plasma display panel to discharge the voltage charged in the plasma display panel to the power recovery capacitor when the sustain switching unit is inactivated, the second power recovery unit blocking a current path to the sustain switching unit when the sustain switching unit is activated.
    • 具有减小的飞轮电流的等离子体显示面板维持驱动器。 等离子体显示面板维持驱动器包括向等离子体显示面板提供预定电压的功率恢复电容器; 维持切换单元,连接到等离子体显示面板,并且维持或放出等离子体显示面板中充电的电压; 连接在功率恢复电容器和维持切换单元之间的第一功率回收单元,第一功率回收单元与等离子体显示面板一起形成谐振电路,以通过维持切换将电力恢复电容器中的电压充电到等离子体显示面板 当维持切换单元被停用时,第一电源恢复单元在维持切换单元被激活时阻止维持切换单元的输出电流; 以及连接在所述功率回收电容器和维持切换单元之间的第二电力回收单元,所述第二电力回收单元与所述等离子体显示面板一起形成谐振电路,以将所述等离子体显示面板中的电压放电至所述功率回收电容器, 切换单元被停用,当维持切换单元被激活时,第二功率恢复单元阻挡到维持切换单元的电流路径。