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    • 4. 再颁专利
    • Projection-type image display apparatus and method
    • 投影型图像显示装置及方法
    • USRE43743E1
    • 2012-10-16
    • US11106732
    • 2005-04-15
    • Kun-ho ChoSeung-Tae JungJang-hoon YooChul-woo Lee
    • Kun-ho ChoSeung-Tae JungJang-hoon YooChul-woo Lee
    • G03B21/00G03B21/26G03B21/14
    • G03B21/005H04N9/3117H04N13/305H04N13/324H04N13/337H04N13/363
    • A projection-type image display apparatus having a structure adapted so that the efficiency of the use of light and resolving power thereof can be enhanced. The projection-type image display apparatus includes a light source; a color separation unit separating incident rays according to predetermined wavelengths, and directing the separated rays at different angles; a lens array dividing the rays separated by the color separation unit into predetermined pixels; a driving portion driving the lens array to change the proceeding paths of the color rays; a polarizing beam splitter changing a proceeding path of incident rays depending on a direction of polarization; a reflection-type display device producing a color image using the rays entering via the polarizing beam splitter, and reflecting the color image toward the polarizing beam splitter; and a projection lens unit magnifying and projecting an incident image onto a screen. In addition, the projection-type image display apparatus may comprise. Alternative designs include a transmission-type display device in place of the reflection-type display device and a deflector changing the proceeding paths of the individual color rays separated by the color separation unit instead of the driving portion.
    • 一种投影型图像显示装置,其具有能够提高光的使用效率和分辨能力的结构。 投影型图像显示装置包括光源; 分离单元,根据预定波长分离入射光线,并以不同的角度引导分离的光线; 透镜阵列,将由分色单元分离的光线划分成预定的像素; 驱动所述透镜阵列以改变所述彩色光线的前进路径的驱动部; 偏振分束器根据偏振方向改变入射光线的行进路径; 反射型显示装置,使用通过偏振分束器进入的光线产生彩色图像,并将彩色图像反射向偏振分束器; 以及将投影图像放大并投影到屏幕上的投影透镜单元。 此外,投影型图像显示装置可以包括。 替代设计包括代替反射型显示装置的透射型显示装置和改变由分色单元分离的各个色光的行进路径而不是驱动部分的偏转器。
    • 5. 发明申请
    • Optical recording/reproducing apparatus
    • 光记录/重放装置
    • US20060274631A1
    • 2006-12-07
    • US11430847
    • 2006-05-10
    • Jang-hoon YooHag-hyun JangSoo-han ParkSoo-jin JeongTae-youn HeorBong-gi Kim
    • Jang-hoon YooHag-hyun JangSoo-han ParkSoo-jin JeongTae-youn HeorBong-gi Kim
    • G11B7/135
    • G11B7/1275G11B7/1353G11B2007/0006
    • An optical recording/reproducing apparatus featuring stable information signal detection ability and reduced number of components. The optical recording/reproducing apparatus includes: a plurality of light sources emitting lights with different wavelengths for use in recording/reproducing information onto/from various types of optical recording media of different recording densities, in which at least two lights emitted from the light sources have polarization components orthogonal to each other; an objective lens for focusing a light from each of the light sources to a corresponding optical recording medium; a collimating lens disposed between the light sources and the objective lens for collimating lights from the light sources; a hologram element installed between the collimating lens and the objective lens for refracting a light emitted from one of the light sources, in which the light to be refracted is selected by wavelength and polarization components; and a photodetector receiving a light that is reflected from the corresponding optical recording medium after being focused by the objective lens.
    • 一种具有稳定的信息信号检测能力和数量减少的光记录/再现装置。 光记录/重放装置包括:多个光源,发射不同波长的光,用于在各种不同记录密度的光学记录介质上记录/再现信息,其中从光源发出的至少两个光 具有彼此正交的极化分量; 用于将来自每个光源的光聚焦到相应的光学记录介质的物镜; 设置在光源和物镜之间的准直透镜,用于准直来自光源的光; 安置在准直透镜和物镜之间的全息元件,用于折射从其中一个光源发射的光,其中通过波长和偏振分量选择待折射的光; 以及光接收器,其在被物镜聚焦之后接收从对应的光记录介质反射的光。
    • 6. 发明申请
    • Optical pick-up device
    • 光学拾取装置
    • US20060164708A1
    • 2006-07-27
    • US11332243
    • 2006-01-17
    • Soo-han ParkJang-hoon YooHang-hyeon JangYong-han YoonSoo-jin Jung
    • Soo-han ParkJang-hoon YooHang-hyeon JangYong-han YoonSoo-jin Jung
    • G02B26/08
    • G11B7/1275G11B7/1353G11B7/1376G11B7/1378G11B7/13922G11B7/13925G11B2007/0006G11B2007/0013G11B2007/13727
    • An optical pickup device according to an embodiment of the present invention comprises a light source for projecting a beam of light to record and reproduce information with respect to an optical recording medium. A collimating lens is disposed on a path of the light to converge and convert the light into a parallel beam. An object lens condenses the parallel beam from the collimating lens and projects the parallel beam onto the optical recording medium. An optical element is disposed between the collimating lens and the object lens. A first actuator moves the collimating lens along the optical axis to thereby control a distance between the collimating lens and the optical element. A first controller drives the first actuator to find a position for the collimating lens, for reducing aberration generated in the light being projected to the optical recording medium. Accordingly, the aberration can be effectively prevented, thereby improving recording and reproducing performance of the optical pickup device.
    • 根据本发明的实施例的光学拾取装置包括用于投射光束以记录和再现关于光学记录介质的信息的光源。 准直透镜设置在光的路径上以会聚并将光转换成平行光束。 物镜将来自准直透镜的平行光束会聚并将平行光束投影到光记录介质上。 光学元件设置在准直透镜和物镜之间。 第一致动器沿着光轴移动准直透镜,从而控制准直透镜和光学元件之间的距离。 第一控制器驱动第一致动器以找到用于准直透镜的位置,用于减少投射到光记录介质的光中产生的像差。 因此,可以有效地防止像差,从而提高光拾取装置的记录和再现性能。
    • 8. 发明申请
    • Objective lenes 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
    • US20050169154A1
    • 2005-08-04
    • 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
    • G02B13/00G02B3/08G02B13/18G11B7/085G11B7/09G11B7/095G11B7/135G11B7/24G11B7/00
    • 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。
    • 9. 发明授权
    • Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats
    • 包括具有与多个光盘格式兼容的物镜的光学拾取器的记录/再现装置
    • US06639889B1
    • 2003-10-28
    • US09594509
    • 2000-06-16
    • Jang-hoon YooChong-sam ChungChul-woo LeeKun-ho Cho
    • Jang-hoon YooChong-sam ChungChul-woo LeeKun-ho Cho
    • G11B700
    • G11B7/126G11B7/127G11B7/131G11B7/1356G11B7/1367G11B7/1374G11B7/139G11B7/13922G11B2007/0006G11B2007/13727
    • A recording/reproducing apparatus including an optical pickup compatible with a plurality of optical recording media each using light of a different wavelength. The optical pickup includes at least one light source, an objective lens having a function of focusing light emitted from the light source into the optimal light spot on an information recording surface of one of the plurality of the optical recording media, and a light detector to detect light transmitted through the objective lens after being reflected from the information recording surface of the optical recording medium on which the light spot is formed. The objective lens has an inner area, an annular lens area and an outer area such that the annular lens area divides the inner area from the outer area and has a ring shape centered at a vertex. The inner area, the annular lens area and the outer area have aspherical surface shapes to focus light transmitted through the inner area and the outer area into a single light spot by which information can be read from the information recording surface of a relatively thin first optical recording medium and scatter light transmitted through the annular lens area located between the inner area and the outer area so that information cannot be read from the information recording surface of the first optical recording medium, during reproduction of the first optical recording medium. The inner area and the annular lens area transmit light into a single light spot by which information can be read from the information recording surface of a relatively thick second optical recording medium and scatters light transmitted through the outer lens area so that information cannot be read from the information recording surface of the second optical recording medium, during reproduction of the second optical recording medium.
    • 一种记录/再现装置,包括与多个使用不同波长的光的多个光学记录介质兼容的光学拾取器。 光拾取器包括至少一个光源,具有将从光源发射的光聚焦到多个光学记录介质之一的信息记录表面上的最佳光点中的功能的物镜,以及光检测器 在从形成有光斑的光记录介质的信息记录面反射后,检测透过物镜的光。 物镜具有内部区域,环形透镜区域和外部区域,使得环形透镜区域将内部区域与外部区域分开并且具有以顶点为中心的环形。 内部区域,环形透镜区域和外部区域具有非球面形状,以将透过内部区域和外部区域的光聚焦成单个光点,通过该单个光点可以从相对薄的第一光学信息记录表面读取信息 记录介质和透射通过位于内部区域和外部区域之间的环形透镜区域的散射光,使得在第一光学记录介质的再现期间不能从第一光学记录介质的信息记录表面读取信息。 内部区域和环形透镜区域将光透射到单个光点中,通过该单个光点可以从相对较厚的第二光学记录介质的信息记录表面读取信息,并散射透过外部透镜区域的光,从而不能从 在第二光学记录介质的再现期间,第二光学记录介质的信息记录表面。