公开(公告)号：US5982731A

公开(公告)日：1999-11-09

申请号：US27650

申请日：1998-02-24

申请人： Noriaki Nishi ,  Kimihiro Saito ,  Shuichi Matsumoto ,  Masato Hattori

发明人： Noriaki Nishi ,  Kimihiro Saito ,  Shuichi Matsumoto ,  Masato Hattori

IPC分类号： G11B7/09 ,  G11B7/12 ,  G11B7/135 ,  G11B11/105 ,  G11B7/00

CPC分类号： G11B7/1356 ,  G11B11/10543 ,  G11B7/123 ,  G11B7/0901 ,  G11B7/0912

摘要： An optical pickup includes a polarization component separation element which is formed as a unit or single piece of birefringence material. The separation element is not laminated obviating the need to carefully match the optical axes of the laminated pieces. Multiple reflections within the birefringent crystal which comprises the separation element improves the separation and resolution of the polarized components which are extracted from a laser beam reflected back off the media surface.

摘要翻译： 光学拾取器包括形成为单体或单片双折射材料的偏振分量分离元件。 分离元件不层叠，从而不需要仔细地匹配层压件的光轴。 包含分离元件的双折射晶体内的多次反射改善了从从介质表面反射回来的激光束提取的偏振分量的分离和分辨率。

公开(公告)号：US20130142028A1

公开(公告)日：2013-06-06

申请号：US13817033

申请日：2011-08-11

申请人： Toshiyuki Kashiwagi ,  Yoshihiro Akimoto ,  Kimihiro Saito ,  Akiya Saito

发明人： Toshiyuki Kashiwagi ,  Yoshihiro Akimoto ,  Kimihiro Saito ,  Akiya Saito

IPC分类号： G11B7/007

CPC分类号： G11B7/00736 ,  G11B7/24085 ,  G11B7/261 ,  G11B7/263

摘要： The present disclosure relates to an optical recording medium and a manufacturing method for an optical recording medium capable of obtaining an appropriate reproduction signal, as a bar code-shaped recording region (BCA) on an optical recording medium.This recording region (BCA) is provided that includes high reflection rate regions and low reflection rate regions which appear alternately in the track line direction, and each of the high reflection rate regions and the low reflection rate regions is formed to be continuous in the track pitch direction, whereby a bar code-shaped reflection pattern is formed, and information is recorded with the reflection pattern. In the BCA, the low reflection rate region is formed with pit strings. The high reflection rate region and the low reflection rate region are formed to satisfy: S+M/2≦0.6H, where a signal level of a reproduction signal obtained from a reflection light in the high reflection rate region is denoted as “H”, a signal level of a reproduction signal obtained from a reflection light in the low reflection rate region is denoted as “S”, and a degree of modulation of the reproduction signal obtained from the reflection light in the low reflection rate region is denoted as “M”.

摘要翻译： 本发明涉及一种能够获得合适的再现信号的光学记录介质的光学记录介质和制造方法，作为光学记录介质上的条形码记录区域（BCA）。 提供该记录区域（BCA），其包括在轨迹线方向上交替出现的高反射率区域和低反射率区域，并且高反射率区域和低反射率区域中的每一个在轨道中形成为连续的 俯仰方向，由此形成条形码反射图案，并且用反射图案记录信息。 在BCA中，低反射率区域形成有凹坑串。 形成高反射率区域和低反射率区域，以满足：S + M 2 + 0.6H，其中从高反射率区域中的反射光获得的再现信号的信号电平被表示为“H” 将从低反射率区域的反射光获得的再现信号的信号电平表示为“S”，将从低反射率区域的反射光获得的再现信号的调制度表示为“ M“。

公开(公告)号：US20110096648A1

公开(公告)日：2011-04-28

申请号：US12906477

申请日：2010-10-18

申请人： Kimihiro Saito ,  Takeshi Kubo ,  Norihiro Tanabe

发明人： Kimihiro Saito ,  Takeshi Kubo ,  Norihiro Tanabe

IPC分类号： G11B7/12

CPC分类号： G11B7/0956 ,  G11B7/0065 ,  G11B2007/0013

摘要： An optical drive device for performing information recording or reproduction of recorded information by formation of a mark by focusing a first light at a necessary position in a recording layer of an optical recording medium by an objective lens includes a position control unit configured to focus a second light on a reflection film, in which a position guide element of the optical recording medium is formed, through the objective lens and to enable the spot position of the second light to follow the position guide element based on the reflected light of the second light focused on the reflection film so as to control the position of the objective lens. The optical drive device further includes a first focusing unit, a first light-sensing portion, and a surface reflection light deviation amount detection unit.

摘要翻译： 一种光学驱动装置，用于通过用物镜聚焦在光学记录介质的记录层中的必要位置处的第一光来形成标记来执行记录信息的记录或再现，所述光学驱动装置包括：位置控制单元， 通过物镜形成光记录介质的位置引导元件的反射膜上的光，并且能够基于第二光聚焦的反射光使第二光的光点位置跟随位置引导元件 在反射膜上，以便控制物镜的位置。 光驱装置还包括第一聚焦单元，第一光感测部分和表面反射光偏差量检测单元。

公开(公告)号：US20100322062A1

公开(公告)日：2010-12-23

申请号：US12815758

申请日：2010-06-15

申请人： Kimihiro Saito ,  Norihiro Tanabe ,  Shiori Tashiro

发明人： Kimihiro Saito ,  Norihiro Tanabe ,  Shiori Tashiro

IPC分类号： G11B7/135

CPC分类号： G11B7/0908 ,  G11B7/1362 ,  G11B7/1365 ,  G11B7/24 ,  G11B7/24038 ,  G11B2007/0013

摘要： An optical pickup includes: a light source that emits a light beam; an object lens that focuses the light beam on an optical disc having a recording layer formed of a fluorescent recording material and a reflecting section adjacent to the recording layer, the recording layer generating, according to presence or absence of a recording mark representing information, a reproduction light beam having wavelength different from that of the light beam when the light beam is irradiated thereon from the light beam, and the reflecting section reflecting the light beam; a wavelength selecting element that separates, from the reproduction light beam, a reflected light beam reflected by the reflecting section of the optical disc and having wavelength equivalent to that of the light beam; and a reflected light detector that receives the reflected light beam separated by the wavelength selecting element and generates a position detection signal.

摘要翻译： 光拾取器包括：发射光束的光源; 将光束聚焦在具有由荧光记录材料形成的记录层和与记录层相邻的反射部分的光盘上的物镜，所述记录层根据是否存在代表信息的记录标记产生 当从光束照射光束时，具有与光束波长不同的波长的再现光束和反射光束的反射部分; 波长选择元件，其从再现光束分离由光盘的反射部分反射并具有与光束相同的波长的反射光束; 以及反射光检测器，其接收由波长选择元件分离的反射光束并产生位置检测信号。

公开(公告)号：US20100027574A1

公开(公告)日：2010-02-04

申请号：US12510703

申请日：2009-07-28

申请人： Goro Fujita ,  Takashi Iwamura ,  Kimihiro Saito

发明人： Goro Fujita ,  Takashi Iwamura ,  Kimihiro Saito

IPC分类号： H01S3/00

CPC分类号： G11B7/126 ,  G11B7/00452 ,  G11B2007/0009

摘要： An optical information recording device includes a semiconductor laser for emitting laser light, a light irradiation section for collecting the laser light and irradiating an optical information recording medium with the laser light, and a laser controller for supplying the semiconductor laser with a laser drive current wave in pulse form. The laser drive current wave has an oscillation current value that causes a relaxation oscillation of the semiconductor laser.

摘要翻译： 一种光学信息记录装置，包括用于发射激光的半导体激光器，用于收集激光并照射具有激光的光学信息记录介质的光照射部分，以及用于向半导体激光器提供激光驱动电流波形的激光控制器 脉冲形式。 激光驱动电流波具有引起半导体激光器的弛豫振荡的振荡电流值。

公开(公告)号：US20090316543A1

公开(公告)日：2009-12-24

申请号：US12486024

申请日：2009-06-17

申请人： Kazuya Hayashibe ,  Hiroshi Uchiyama ,  Takao Kudo ,  Yusuke Suzuki ,  Norihiro Tanabe ,  Kimihiro Saito

发明人： Kazuya Hayashibe ,  Hiroshi Uchiyama ,  Takao Kudo ,  Yusuke Suzuki ,  Norihiro Tanabe ,  Kimihiro Saito

IPC分类号： G11B20/00 ,  G11B7/00

CPC分类号： G11B7/00452 ,  G11B7/0938 ,  G11B2007/0009

摘要： An optical pickup includes: a light source that emits first light; an objective lens that condenses the first light and allows it to irradiate a track having formed therein a recording mark for intercepting the first light in a uniform recording layer of an optical information recording medium; and a light receiving section that receives transmitted light which has transmitted through the track.

摘要翻译： 光拾取器包括：发出第一光的光源; 该物镜会聚第一光，并允许其照射具有记录标记的轨道，用于在光学信息记录介质的均匀记录层中截取第一光; 以及受光部，其接收透过该轨迹的透射光。

公开(公告)号：US20090262633A1

公开(公告)日：2009-10-22

申请号：US12423357

申请日：2009-04-14

申请人： Kimihiro Saito ,  Kunihiko Hayashi

发明人： Kimihiro Saito ,  Kunihiko Hayashi

IPC分类号： G11B7/00

CPC分类号： G11B7/133 ,  G11B7/00451 ,  G11B7/00452 ,  G11B7/005 ,  G11B7/0908 ,  G11B7/0938 ,  G11B7/131 ,  G11B7/1381 ,  G11B2007/0013

摘要： When an optical disc apparatus reproduces information from an optical disc, it converges a reading light beam emitted from an LED to substantially collimated light and projects it to the optical disc to cause it to be reflected by reflection surface thereof so as to make it become a reading reflected light beam. Then, the apparatus converges the reading reflected light beam by a mark layer selection lens, detects the reading reflected light beam passing through the target position by a detection region located at the confocal point of the target position and generates a detection signal. Subsequently, the apparatus recognizes the presence or absence of a recording mark based on the detection signal to reproduce the information. Thus, the apparatus can detect the state of the reading reflected light beam observed when it passes the target position and can recognize the presence or absence of a recording mark.

摘要翻译： 当光盘装置从光盘再现信息时，它将从LED发射的读取光束会聚到基本上准直的光并将其投射到光盘上，以使其被其反射表面反射，从而使其成为 读取反射光束。 然后，设备通过标记层选择透镜会聚读取反射光束，通过位于目标位置的共焦点处的检测区域检测通过目标位置的读取反射光束，并产生检测信号。 随后，该装置基于检测信号识别记录标记的存在或不存在，以再现该信息。 因此，该装置可以检测在通过目标位置时观察到的读取反射光束的状态，并且可以识别记录标记的存在或不存在。

公开(公告)号：US20090245065A1

公开(公告)日：2009-10-01

申请号：US12362927

申请日：2009-01-30

申请人： Hirotaka Miyamoto ,  Kimihiro Saito ,  Toshihiro Horigome ,  Kunihiko Hayashi

发明人： Hirotaka Miyamoto ,  Kimihiro Saito ,  Toshihiro Horigome ,  Kunihiko Hayashi

IPC分类号： G11B7/00 ,  G11B19/02

CPC分类号： G11B7/0938 ,  G11B7/00452 ,  G11B7/0065 ,  G11B7/08511 ,  G11B7/1275 ,  G11B7/1378 ,  G11B7/24038 ,  G11B7/24044 ,  G11B2007/0009

摘要： A focus control section first performs a reference focus control process in which a reference optical beam is focused on a reference layer of an optical disc according to the result of receiving a reference reflection optical beam, and then switches from the reference focus control process to an information focus control process in which an information optical beam is focused on a mark layer of the optical disc according to the result of receiving an information reflection optical beam.

摘要翻译： 焦点控制部分首先根据接收参考反射光束的结果执行参考光束聚焦在光盘的参考层上的参考聚焦控制处理，然后从参考聚焦控制处理切换到 信息聚焦控制处理，其中根据接收信息反射光束的结果，信息光束聚焦在光盘的标记层上。

公开(公告)号：US20090219799A1

公开(公告)日：2009-09-03

申请号：US12370965

申请日：2009-02-13

申请人： Ariyoshi NAKAOKI ,  Kimihiro Saito

发明人： Ariyoshi NAKAOKI ,  Kimihiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/1387 ,  G11B7/0908 ,  G11B7/1275 ,  G11B2007/0013

摘要： An optical pickup device has a near-field optical system having a numerical aperture of NA>1; a first light source emitting a first light having a first wavelength; a second light source emitting a second light having a second wavelength; an optical system multiplexing the first light and second light and irradiating the multiplexed light onto an optical recording medium having at least two recording layers; a first photodetector detecting the first light returned from the recording medium a second photodetector detecting the second light returned from the recording medium; a controller obtaining a signal corresponding to distance between the near-field optical system and the recording medium based on the returned second light, and obtaining a reproducing signal and a tracking signal of the recording medium and a focus signal corresponding to the recording layer based on the returned first light; and a focus position adjustment mechanism moving a focus position of the first light under control of the focus signal.

摘要翻译： 光学拾取装置具有数值孔径NA> 1的近场光学系统; 发射具有第一波长的第一光的第一光源; 发射具有第二波长的第二光的第二光源; 将所述第一光和第二光复用并将所述复用光照射到具有至少两个记录层的光学记录介质上的光学系统; 第一光电检测器，检测从记录介质返回的第一光，第二光电检测器检测从记录介质返回的第二光; 控制器基于返回的第二光获取对应于近场光学系统和记录介质之间的距离的信号，并且基于返回的第二光获得记录介质的再现信号和跟踪信号以及对应于记录层的聚焦信号 返回的第一盏灯; 以及聚焦位置调整机构，在聚焦信号的控制下移动第一光的聚焦位置。

公开(公告)号：US20090168632A1

公开(公告)日：2009-07-02

申请号：US12336031

申请日：2008-12-16

申请人： Hirotaka Miyamoto ,  Kimihiro Saito ,  Goro Fujita

发明人： Hirotaka Miyamoto ,  Kimihiro Saito ,  Goro Fujita

IPC分类号： G11B7/135

CPC分类号： G11B7/00452 ,  G11B7/1378 ,  G11B2007/0013

摘要： An optical disk apparatus appropriately adjusts the optical paths of a reference light beam and information light beam in an optical path forming section of an optical pickup, condenses the reference light beam and information light beam using an objective lens, and performs position control of the objective lens in the focusing and tracking directions so as to focus the reference light beam onto a reference track in a target mark layer, thereby focusing the focal point of the information light beam condensed by the objective lens onto a target track TG in the target mark layer.

摘要翻译： 光盘装置适当地调整光学拾取器的光路形成部分中的参考光束和信息光束的光路，使用物镜聚集参考光束和信息光束，并执行目标的位置控制 以便将参考光束聚焦在目标标记层中的参考轨道上，从而将由物镜聚光的信息光的焦点聚焦到目标标记层中的目标轨道TG上 。