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    • 2. 发明授权
    • Actuator loading/unloading device for disc drive
    • 驱动器装载/卸载装置
    • US06958891B2
    • 2005-10-25
    • US09978923
    • 2001-10-18
    • Byoung-young BaeSoon-kyo HongChul-woo Lee
    • Byoung-young BaeSoon-kyo HongChul-woo Lee
    • G11B21/12G11B5/54G11B21/22
    • G11B5/54G11B21/22
    • An actuator loading/unloading device includes a block unit disposed at a base of a disc drive to be positioned outside a disc, a lamp member positioned on the block unit so that the lamp member is lifted from or lowered down on the block unit, an actuator being parked on the loading/unloading device by constraining a side end portion of a swing arm of the actuator during loading/unloading of the actuator, a stopper to restrict a lifting range of the lamp member, and a lifting/lowering unit to lift or lower the lamp member between the block unit and the stopper. The lifting/lowering unit includes a magnet inserted into a bottom surface of the lamp member, and an electromagnet inserted into a top surface of the block unit, facing the magnet. As a result, the actuator is stably parked on the disc drive having a compact structure where the actuator cannot be completely escaped from the disc during unloading of the actuator.
    • 执行器装载/卸载装置包括设置在盘驱动器的基座处以定位在盘外部的块单元,位于块单元上的灯构件,使得灯构件在块单元上被升降或降低, 致动器通过在执行器的装载/卸载期间约束致动器的摆臂的侧端部而停放在装载/卸载装置上,限制灯构件的提升范围的限位器和提升/降低单元以提升 或者降低块单元和止动器之间的灯构件。 提升/降低单元包括插入到灯构件的底表面中的磁体和插入块单元的顶表面的电磁体,面向磁体。 结果,致动器被稳定地停放在具有紧凑结构的盘驱动器上,在致动器卸载期间致动器不能完全从盘中逸出。
    • 3. 发明授权
    • Disc balancing device
    • 光盘平衡装置
    • US07020950B2
    • 2006-04-04
    • US09955061
    • 2001-09-19
    • Soon-kyo HongChul-woo LeeSeung-tae JungSung-hoon Choa
    • Soon-kyo HongChul-woo LeeSeung-tae JungSung-hoon Choa
    • G11B5/127H04R31/00
    • G11B33/08B23K26/0823B23K26/1462Y10T29/49025Y10T29/49036Y10T29/53165
    • A disc balancing device and a method thereof. The disc balancing device includes a disc assembly having a driving source, and a disc rotatably disposed at the driving source, a displacement measurement unit measuring vibration in the rotation of the disc assembly, a phase angle measurement unit measuring a phase angle from a reference point of the disc assembly in the rotation of the disc assembly, an operation/control unit calculating an eccentric mass and an eccentric position of the disc assembly, by using the biased vibration measured in the displacement measurement unit and the phase angle measured in the phase angle measurement unit, and a laser cutter tracking and laser-cutting the side portion of the disc corresponding to the eccentric position according to the information from the operation/control unit, whereby the eccentric mass of the disc assembly is balanced to reduce vibration in the rotation.
    • 一种光盘平衡装置及其方法。 盘平衡装置包括具有驱动源的盘组件和可旋转地设置在驱动源处的盘,测量盘组件的旋转中的振动的位移测量单元,相位角测量单元,其从参考点 通过使用在位移测量单元中测量的偏置振动和在相位角测量的相位角来计算盘组件的偏心质量和偏心位置的操作/控制单元 测量单元和激光切割器根据来自操作/控制单元的信息跟踪和激光切割对应于偏心位置的盘的侧部,由此平衡盘组件的偏心质量以减少旋转中的振动 。
    • 5. 发明授权
    • Color laser printer
    • US07079171B2
    • 2006-07-18
    • US10423988
    • 2003-04-28
    • Bu-hyun SungChul-woo LeeSoon-kyo HongYoung-woo Huh
    • Bu-hyun SungChul-woo LeeSoon-kyo HongYoung-woo Huh
    • B41J2/447B41J2/455
    • H04N1/506B41J2/473
    • A color laser printer producing a color image using a single laser scanning unit includes a lighting unit including first and second laser diodes emitting beams of one polarization, a polarization prism transmitting or reflecting incident beams depending on a direction of polarization, and third and fourth laser diodes disposed in a different direction from the first and second laser diodes with respect to the polarization prism, a rotary polygon mirror that reflects the beam emitted along the same path from the lighting unit, an f-θ lens that focuses the beam reflected by the rotary polygon mirror, first and second polarization beam splitters, each of which transmits or reflects the beam passing through the f-θ lens depending on the direction of the polarization, and first through fourth photoconductive units on which the beams reflected and transmitted through the first and second polarization beam splitters are incident. In the color laser printer, lengths of optical paths between the f-θ lens and each of the first through fourth photoconductive units are equal. The color laser printer is constructed such that a plurality of light sources emitting the beams of one polarization are arranged separately and the beams emitted from the light sources are combined by the polarization prism to enter the f-θ lens, thereby reducing a thickness of the f-θ lens.
    • 9. 发明授权
    • Objective lens for high-density optical focusing and an optical disk in an optical pickup
    • 用于高密度光学聚焦的物镜和光学拾取器中的光盘
    • US07200098B2
    • 2007-04-03
    • US11091449
    • 2005-03-29
    • Jang-hoon YooKun-ho ChoSeung-tae JungChul-woo LeeDong-ho Shin
    • Jang-hoon YooKun-ho ChoSeung-tae JungChul-woo LeeDong-ho Shin
    • G11B7/00
    • G11B7/13927G11B7/1362G11B7/1374G11B7/1378G11B2007/13725
    • An optical pickup includes a light source emitting a laser beam and an optical path changing unit altering a traveling path of an incident beam. An objective lens, disposed on an optical path between the optical path changing unit and an optical disk, focuses the incident beam from the light source to form a light spot on the optical disk of the objective lens. The optical pickup further includes a photodetector and an detecting-correcting unit, arranged on the optical path between the optical path changing unit and the objective lens, performing at least one of detecting the thickness of the optical disk and correcting aberration caused by thickness variations of the optical disk. The objective lens includes a first transmitting portion divergently transmitting an incident beam, where the first transmitting portion is at a relatively near-axis region from an optical axis of the objective lens. A second transmitting portion transmits the incident beam, where the second transmitting portion is arranged facing the first transmitting portion. A first reflecting portion condenses and reflects the incident beam from the first transmitting portion, where the first reflecting portion is formed around the second transmitting portion. A second reflecting portion condenses and reflects the incident beam from the first reflecting portion towards the second transmitting portion, where the second reflecting portion is formed around the first transmitting portion.
    • 光拾取器包括发射激光束的光源和改变入射光束的行进路径的光路改变单元。 设置在光路改变单元和光盘之间的光路上的物镜聚焦来自光源的入射光束,以在物镜的光盘上形成光斑。 光学拾取器还包括光电检测器和检测校正单元,其布置在光路改变单元和物镜之间的光路上,执行检测光盘的厚度和校正由厚度变化引起的像差中的至少一个 光盘。 物镜包括发射入射光束的第一透射部分,其中第一透射部分处于距离物镜的光轴的相对近轴的区域。 第二发送部分透射入射光束,其中第二透射部分布置成面对第一透射部分。 第一反射部分将来自第一透射部分的入射光束冷凝并反射,其中第一反射部分围绕第二透射部分形成。 第二反射部分将来自第一反射部分的入射光束聚集并反射到第二透射部分,其中第二反射部分围绕第一透射部分形成。