公开(公告)号：US20140245333A1

公开(公告)日：2014-08-28

申请号：US14189024

申请日：2014-02-25

申请人： Toshiba Samsung Storage Technology Korea Corporation

发明人： Jin-ho JEONG ,  Eun-goo KIM

IPC分类号： G11B7/09 ,  G11B7/1376 ,  G11B7/1374

CPC分类号： G11B7/1376 ,  G11B7/0908 ,  G11B7/1374 ,  G11B2007/0006 ,  G11B2007/0013

摘要： Provided are a method and apparatus for focusing a laser beam on an optical disc. According to various aspects, the apparatus may include an objective lens which has a numerical aperture below what is standardized for the optical disc. In addition, a collimating lens which is used to focus a laser beam on the objective lens may be positioned at a fixed location. Despite the fixed location, the apparatus may support data recording/reproducing on multiple layers of the optical disc.

摘要翻译： 提供了一种用于将激光束聚焦在光盘上的方法和装置。 根据各个方面，该装置可以包括物镜，其数值孔径低于用于光盘标准化的数值孔径。 此外，用于将激光束聚焦在物镜上的准直透镜可以定位在固定位置。 尽管固定位置，该装置可以支持在多个光盘上的数据记录/再现。

公开(公告)号：US08730774B2

公开(公告)日：2014-05-20

申请号：US13853725

申请日：2013-03-29

申请人： Funai Electric Co., Ltd.

发明人： Mamoru Kuwajima

IPC分类号： G11B7/00

CPC分类号： G11B7/135 ,  G11B7/0903 ,  G11B7/094 ,  G11B7/0945 ,  G11B7/1376 ,  G11B7/13925

摘要： An optical disk device includes an optical pickup, and a controller. The optical pickup emits light on an optical disk, and detects return light from the optical disk. The controller performs a focus control based on a focus error signal corresponding to the return light detected by the optical pickup, and performs a tracking control based on a tracking error signal corresponding to the return light detected by the optical pickup. The controller finds a relation of an amount of deviation in a tracking balance of the tracking error signal relative to a change in a focus balance of the focus error signal while the tracking control is stopped prior to reproduction of the optical disk. The controller corrects the deviation in the tracking balance attributable to the change in the focus balance based on the relation while the focus balance is adjusted.

摘要翻译： 光盘装置包括光学拾取器和控制器。 光拾取器在光盘上发光，并检测来自光盘的返回光。 控制器基于与光学拾取器检测到的返回光相对应的聚焦误差信号执行聚焦控制，并且基于与光学拾取器检测到的返回光相对应的跟踪误差信号执行跟踪控制。 控制器在跟踪控制在再现光盘之前停止时，找出跟踪误差信号的跟踪平衡相对于聚焦误差信号的聚焦平衡的变化的偏差量的关系。 控制器根据调整对焦平衡时的关系，校正归因于焦距平衡变化的跟踪余额中的偏差。

公开(公告)号：US08531926B2

公开(公告)日：2013-09-10

申请号：US13411645

申请日：2012-03-05

申请人： Katsuhiko Hayashi ,  Yasuhiro Tanaka ,  Michihiro Yamagata ,  Fumitomo Yamasaki

发明人： Katsuhiko Hayashi ,  Yasuhiro Tanaka ,  Michihiro Yamagata ,  Fumitomo Yamasaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1376 ,  G11B7/1374 ,  G11B7/1392 ,  G11B7/24038 ,  G11B2007/0006 ,  G11B2007/0013

摘要： An optical system for optical pickup includes a magnification conversion optical element moving along an optical axis direction in accordance with each of optical recording medium recording surfaces, and an objective lens element converging a light beam incident through the magnification conversion optical element, to form a spot on a corresponding one of the recording surfaces, and satisfies the following formula: 4.0×10−4

摘要翻译： 用于光学拾取器的光学系统包括根据每个光学记录介质记录表面沿着光轴方向移动的放大率转换光学元件和会聚入射通过倍率转换光学元件的光束的物镜元件，以形成点 在相应的一个记录表面上，满足下列公式：4.0×10-4

公开(公告)号：US08369201B2

公开(公告)日：2013-02-05

申请号：US13053566

申请日：2011-03-22

申请人： Kimihiro Saito ,  Norihiro Tanabe ,  Hirotaka Miyamoto ,  Takahiro Miura

发明人： Kimihiro Saito ,  Norihiro Tanabe ,  Hirotaka Miyamoto ,  Takahiro Miura

IPC分类号： G11B7/00

CPC分类号： G11B7/0908 ,  G11B7/00781 ,  G11B7/0938 ,  G11B7/1376 ,  G11B2007/0013

摘要： There is provided an optical pickup including: an optical-system having an object-lens illuminating a first light for information recording or reproducing on a recording layer as a target and a second light on an optical-recording medium including a reference plane having a reflection-layer and the recording-layer at a layer position different from that of the reference-plane and on which information recording is performed through mark formation, and a focus-aligned-position-adjusting unit adjusting a focus-aligned position of the first light through the object-lens by changing collimation thereof incident to the object-lens; and a focusing-mechanism driving the object-lens in a focusing direction, wherein, when a depth of focus λ/NA2 defined by a wavelength λ of the first light and a numerical aperture NA of the object lens is set to α and the maximum-surface-blur range is denoted by D, the optical-system is designed so that a use magnification ratio β satisfies |β|≧√(D/α).

摘要翻译： 提供了一种光学拾取器，包括：光学系统，其具有在作为目标的记录层上照射用于信息记录或再现的第一光的物镜，以及在包括具有反射的参考平面的光记录介质上的第二光 层和位于不同于参考平面的层位置处的记录层，并且通过标记形成执行信息记录;以及聚焦对准位置调整单元，调整第一光的聚焦对准位置 通过改变入射到物镜的准直通过物镜; 以及在聚焦方向上驱动物镜的聚焦机构，其中，当由所述第一光的波长λ和所述物镜的数值孔径NA定义的焦深λ/ NA2被设定为α并且最大值 表面模糊范围由D表示，光学系统设计成使用放大率＆bgr; 满足|＆bgr | |≧√（D /α）。

公开(公告)号：US20130021890A1

公开(公告)日：2013-01-24

申请号：US13495590

申请日：2012-06-13

申请人： Mats OBERG ,  Zachary Keirn

发明人： Mats OBERG ,  Zachary Keirn

IPC分类号： G11B7/1374 ,  G11B7/1376

CPC分类号： G11B7/13925 ,  G11B7/0945 ,  G11B7/1376 ,  G11B2007/0013

摘要： Aspects of the disclosure provide an apparatus. The apparatus includes a collimator configured to have a plurality of positions, and a controller configured to control the collimator to move to a predetermined position associated with a data layer of an optical storage medium to collimate a light beam. The collimated light beam is then focused onto the data layer of the optical storage medium.

摘要翻译： 本公开的方面提供了一种装置。 该装置包括被配置为具有多个位置的准直器和被配置为控制准直器移动到与光学存储介质的数据层相关联的预定位置以准直光束的控制器。 然后将准直光束聚焦到光学存储介质的数据层上。

公开(公告)号：US20120307611A1

公开(公告)日：2012-12-06

申请号：US13468148

申请日：2012-05-10

申请人： Shinya SHIMIZU

发明人： Shinya SHIMIZU

IPC分类号： G11B20/10

CPC分类号： G11B7/0945 ,  G11B7/0956 ,  G11B7/126 ,  G11B7/1376 ,  G11B2220/2537

摘要： An optical disc apparatus includes an optical pickup that emits light to an optical disc and receives reflection light reflected by the optical disc, a temperature sensor for detecting ambient temperature of the optical pickup, a temperature control processing portion that performs a process corresponding to temperature information obtained by the temperature sensor, and a filter portion that performs filtering of a signal about the temperature information during a period until the temperature information detected by the temperature sensor is input to the temperature control processing portion.

摘要翻译： 一种光盘装置，包括向光盘发射光并接收由光盘反射的反射光的光学拾取器，用于检测光学拾取器的环境温度的温度传感器，执行与温度信息对应的处理的温度控制处理部 由温度传感器获得的过滤器部分，以及在温度传感器检测到的温度信息被输入到温度控制处理部分之前的周期内对温度信息进行滤波的过滤器部分。

公开(公告)号：US20120224462A1

公开(公告)日：2012-09-06

申请号：US13410649

申请日：2012-03-02

申请人： Kazuo Watabe ,  Hideaki Okano ,  Takashi Usui ,  Chikara Tanioka ,  Akihito Ogawa ,  Kazuaki Doi

发明人： Kazuo Watabe ,  Hideaki Okano ,  Takashi Usui ,  Chikara Tanioka ,  Akihito Ogawa ,  Kazuaki Doi

IPC分类号： G11B7/09 ,  G11B7/085

CPC分类号： G11B7/14 ,  G11B7/0045 ,  G11B7/126 ,  G11B7/1376 ,  G11B7/24038 ,  G11B7/2405

摘要： According to one embodiment, a pickup head includes a plurality of light sources, a first objective lens, second objective lens, a driving unit, a first control unit, a second control unit, light receiving units. The first objective lens focuses a first light beam at a first recording layer. The second objective lens focuses a second light beam at a second recording layer. The driving unit moves the first objective lens and the second objective lens in a first direction and a second direction. The first control unit corrects displacement from target track along the first direction. The second control unit controls a moving direction of a position of the second light spot in the second direction.

摘要翻译： 根据一个实施例，拾取头包括多个光源，第一物镜，第二物镜，驱动单元，第一控制单元，第二控制单元，光接收单元。 第一物镜将第一光束聚焦在第一记录层。 第二物镜将第二光束聚焦在第二记录层。 驱动单元沿第一方向和第二方向移动第一物镜和第二物镜。 第一控制单元沿着第一方向校正与目标轨迹的位移。 第二控制单元控制第二光点在第二方向上的位置的移动方向。

公开(公告)号：US20120082021A1

公开(公告)日：2012-04-05

申请号：US13179603

申请日：2011-07-11

申请人： Ui-yol KIM ,  Yong-jae Lee

发明人： Ui-yol KIM ,  Yong-jae Lee

IPC分类号： G11B7/135

CPC分类号： G11B7/1398 ,  G11B7/125 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/1378 ,  G11B7/13925 ,  G11B2007/0006

摘要： An optical pickup device, an optical drive using the same, and a method of forming a beam spot are provided. The optical pickup includes a light source system that includes a light source corresponding to at least one of a digital versatile disc (DVD) and a Blu-ray disc (BD). The light source forms a beam spot having an oval shape with a long axis and a short axis on an information recording track of the disc, and the light source is disposed such that the long axis is maintained at an angle ranging from 0° to 30° with respect to a radial direction passing through a rotation center of the disc.

摘要翻译： 提供一种光学拾取装置，使用其的光学驱动器以及形成束斑的方法。 光拾取器包括光源系统，其包括对应于数字通用盘（DVD）和蓝光盘（BD）中的至少一个的光源。 光源在盘的信息记录轨道上形成具有长轴和短轴的椭圆形的束斑，并且光源被设置成使得长轴保持在0°至30°的角度 °相对于穿过盘的旋转中心的径向方向。

公开(公告)号：US20120023514A1

公开(公告)日：2012-01-26

申请号：US13257380

申请日：2011-01-07

申请人： Yoshiaki Komma ,  Katsuhiko Hayashi ,  Fumitomo Yamasaki ,  Michihiro Yamagata

发明人： Yoshiaki Komma ,  Katsuhiko Hayashi ,  Fumitomo Yamasaki ,  Michihiro Yamagata

IPC分类号： G02B27/42 ,  G11B17/028 ,  G11B7/13

CPC分类号： G11B7/13922 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

摘要： A compound objective lens, an optical head device, an optical information device, and an information processing device that can inhibit the occurrence of aberration even when a light beam source wavelength shifts from the designed value. A diffraction structure having a sawtooth or stepwise cross section is formed in the region (R10) and region (R20). The height of the sawtooth or stepwise cross section formed in the region (R10) provides a light beam, which has a predetermined wavelength, with a difference in optical path length of N times the predetermined wavelength, as compared with a case of propagation in air. The height of the sawtooth or stepwise cross section formed in the region (R20) provides the light beam, which has the predetermined wavelength, with a difference in optical path length of J times the predetermined wavelength, as compared with a case of propagation in air. At least one of the difference in height between both ends of a boundary band (RB) provided between the region (R10) and the region (R20), and the width of the boundary band (RB) provides the light beam, which has the predetermined wavelength, with a difference in optical path length of (N+J)/2 times (N and J are mutually different natural numbers) the predetermined wavelength, as compared with a case of transmission in air.

摘要翻译： 复光物镜，光头装置，光信息装置和信息处理装置，即使当光束源波长从设计值偏移时也能够抑制像差的发生。 在区域（R10）和区域（R20）中形成具有锯齿状或阶梯状横截面的衍射结构。 与在空气中传播的情况相比，在区域（R10）中形成的锯齿状或阶梯状横截面的高度提供具有预定波长的光束，其具有N倍于预定波长的光程长度差 。 与在空气中传播的情况相比，在区域（R20）中形成的锯齿或逐步横截面的高度提供了具有预定波长的光束，其光路长度差为J倍于预定波长 。 设置在区域（R10）和区域（R20）之间的边界带（RB）的两端之间的高度差异和边界带（RB）的宽度中的至少一个高度提供了具有 与空气传播的情况相比，预定波长与（N + J）/ 2倍（N和J相互不同的自然数）的光程长度差异。

公开(公告)号：US08102748B2

公开(公告)日：2012-01-24

申请号：US12715903

申请日：2010-03-02

申请人： Kenji Nagatomi

发明人： Kenji Nagatomi

IPC分类号： G11B7/00

CPC分类号： G11B7/1376 ,  G11B7/1374 ,  G11B2007/0013 ,  G11B2007/13727

摘要： An optical pickup device radiates laser light to a disc having a plurality of recording layers in a direction of lamination. The optical pickup device includes a laser light source, a collimator lens, and an objective lens. The collimator lens changes a spread angle of the laser light emitted from the laser light source. The objective lens converges the laser light having passed through the collimator lens onto the disc. With the laser light in a parallel state having passed through the collimator lens, if a distance f between the laser light source and the collimator lens and a distance L between the collimator lens and the objective lens are in a relation of f

摘要翻译： 光学拾取装置将激光照射到具有层叠方向的多个记录层的盘上。 光学拾取装置包括激光光源，准直透镜和物镜。 准直透镜改变从激光光源发射的激光的扩展角。 物镜会聚经过准直透镜的激光到光盘上。 在激光通过准直透镜的平行状态下，如果激光光源与准直透镜之间的距离f与准直透镜与物镜之间的距离L为f