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    • 1. 发明申请
    • Light emitting module and optical pickup apparatus and method employing the same
    • 发光模块和光拾取装置及其采用方法
    • US20050117500A1
    • 2005-06-02
    • US10983902
    • 2004-11-09
    • Bong-Gi KimDo-Hoan NamChun-Seong ParkMun-Whan Lee
    • Bong-Gi KimDo-Hoan NamChun-Seong ParkMun-Whan Lee
    • G11B7/00G11B7/125G11B7/135
    • G11B7/1359G11B7/127G11B7/1365G11B7/1398
    • A light emitting module and method and an optical pickup apparatus employing the same are provided. The light emitting module includes a base, a semiconductor laser that is disposed on the base and emits a laser beam of a predetermined wavelength, a cap surrounding the semiconductor laser, a beam shaping window that is fitted with a predetermined portion of the cap corresponding to the propagation path of the laser beam and shapes a transmitted laser beam while reflecting a portion of an incident beam, and a quarter wave plate that is disposed in the propagation path of the laser beam and in front of the beam shaping window and transforms a laser beam horizontally polarized after passing through the beam shaping window into a circularly polarized beam while converting a beam reflected from an optical disc into a vertically polarized beam.
    • 提供了一种发光模块和方法以及采用该发光模块和方法的光学拾取装置。 发光模块包括基座,设置在基座上并发射预定波长的激光束的半导体激光器,围绕半导体激光器的帽,光束整形窗口,其与帽子的预定部分相配合 激光束的传播路径,并且在反射入射光束的一部分的同时对透射的激光束进行成形,以及四分之一波片,其设置在激光束的传播路径中并在光束整形窗口的前面,并且转换激光 在将从光盘反射的光束转换成垂直偏振光束之后,在通过光束整形窗口之后水平极化的光束变成圆偏振光束。
    • 2. 发明授权
    • Light emitting module and optical pickup apparatus and method employing the same
    • 发光模块和光拾取装置及其采用方法
    • US07450476B2
    • 2008-11-11
    • US10983902
    • 2004-11-09
    • Bong-Gi KimDo-Hoan NamChun-Seong ParkMun-Whan Lee
    • Bong-Gi KimDo-Hoan NamChun-Seong ParkMun-Whan Lee
    • G11B7/00
    • G11B7/1359G11B7/127G11B7/1365G11B7/1398
    • A light emitting module and method and an optical pickup apparatus employing the same are provided. The light emitting module includes a base, a semiconductor laser that is disposed on the base and emits a laser beam of a predetermined wavelength, a cap surrounding the semiconductor laser, a beam shaping window that is fitted with a predetermined portion of the cap corresponding to the propagation path of the laser beam and shapes a transmitted laser beam while reflecting a portion of an incident beam, and a quarter wave plate that is disposed in the propagation path of the laser beam and in front of the beam shaping window and transforms a laser beam horizontally polarized after passing through the beam shaping window into a circularly polarized beam while converting a beam reflected from an optical disc into a vertically polarized beam.
    • 提供了一种发光模块和方法以及采用该发光模块和方法的光学拾取装置。 发光模块包括基座,设置在基座上并发射预定波长的激光束的半导体激光器,围绕半导体激光器的帽,光束整形窗口,其与帽子的预定部分相配合 激光束的传播路径,并且在反射入射光束的一部分的同时对透射的激光束进行成形,以及四分之一波片,其设置在激光束的传播路径中并在光束整形窗口的前面,并且转换激光 在将从光盘反射的光束转换成垂直偏振光束之后,在通过光束整形窗口之后水平极化的光束变成圆偏振光束。
    • 7. 发明授权
    • Compatible optical pickup apparatus
    • 兼容光学拾取装置
    • US07342868B2
    • 2008-03-11
    • US10985899
    • 2004-11-12
    • Soo-Han ParkBong-Gi Kim
    • Soo-Han ParkBong-Gi Kim
    • G11B7/00
    • G11B7/1398G11B7/0943G11B7/123G11B7/1275G11B7/131G11B7/1353G11B7/1356G11B2007/0006
    • A compatible optical pickup apparatus and method are provided. The apparatus and method include a first light source for generating and emitting a first light having a predetermined wavelength, a second light source for generating and emitting a second light having a wavelength different from the wavelength of the first light, a beam shaping beam splitter provided in paths of the first and second lights for shaping the first and second lights in order to change a shape of a profile of each of the first and second lights to a circular shape and change the paths of the first and second lights, an objective lens for focusing the first and second lights and forming light spots on an optical recording medium, and a main photodetector for receiving the first and second lights by being reflected from the optical recording medium and passing through the objective lens and the beam shaping beam splitter, and detecting an information signal and an error signal.
    • 提供了一种兼容的光学拾取装置和方法。 该装置和方法包括用于产生和发射具有预定波长的第一光的第一光源,用于产生和发射具有与第一光的波长不同的波长的第二光的第二光源,设置有光束成形分束器 在用于使第一和第二光成形的第一和第二光的路径中,以便将第一和第二光中的每一个的轮廓的形状改变为圆形并改变第一和第二光的路径,物镜 用于将第一和第二光聚焦并在光学记录介质上形成光点;以及主光电检测器,用于通过从光学记录介质反射并通过物镜和光束整形分束器来接收第一和第二光,以及 检测信息信号和误差信号。
    • 9. 发明授权
    • Optical pickup including polarization holographic optical element and photodetector
    • 光拾取器包括偏振全息光学元件和光电检测器
    • US07369467B2
    • 2008-05-06
    • US10998570
    • 2004-11-30
    • Bong-Gi KimSoo-Han ParkJung-Gug PaeTae-Youn Heor
    • Bong-Gi KimSoo-Han ParkJung-Gug PaeTae-Youn Heor
    • G11B7/00
    • G11B7/1353G11B7/0956
    • Disclosed is an optical pickup including a polarization holographic optical element (HOE) and a photodetector. The optical pickup includes a light source, an optical path changer, an objective lens, a polarization HOE, and a photodetector. The polarization HOE has a pattern designed to generate different astigmatisms in the left and right halves of the polarization HOE in a tangential direction and to divide plus and minus first-order beams in a radial direction. The photodetector includes a first light-receiving portion receiving a zero-order beam and second and third light-receiving portion that are disposed on either side of the first light-receiving portion in the tangential direction and respectively receive the plus and minus first-order beams.
    • 公开了一种包括偏振全息光学元件(HOE)和光电检测器的光学拾取器。 光学拾取器包括光源,光路改变器,物镜,偏振HOE和光电检测器。 偏振HOE具有被设计为在切向方向上在偏振HOE的左半部分和右半部分产生不同散光并且沿径向方向分割正负一阶光束的图案。 光电检测器包括接收零级光束的第一光接收部分和第二和第三光接收部分,其在切向方向上设置在第一光接收部分的任一侧上,并且分别接收正,负一级 梁。