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：US20110242951A1

公开(公告)日：2011-10-06

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： G11B7/135

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：US20130010583A1

公开(公告)日：2013-01-10

申请号：US13634953

申请日：2011-03-26

申请人： Hirotaka Miyamoto ,  Kimihiro Saito ,  Norihiro Tanabe

发明人： Hirotaka Miyamoto ,  Kimihiro Saito ,  Norihiro Tanabe

IPC分类号： G11B7/1374 ,  G11B7/1353

CPC分类号： G11B7/1376 ,  G11B7/0908 ,  G11B7/0938 ,  G11B7/0953 ,  G11B2007/0009

摘要： The present invention relates to an optical pick, an optical drive device, and a light irradiation method capable of suppressing a generated amount of shift Δx of a spot position.The optical pickup irradiates an optical recording medium through a common objective lens which irradiates a first light for use in information recording in or information reproduction from a recording layer and a second light different from the first light, the optical recording medium includes a reference surface having a reflection film in which a position director is formed in a spiral form or the like form, and the recording layer which is provided in a layer position different from the reference surface and in which a mark corresponding to irradiation of light is formed and hence information is recorded. The optical pickup adjusts a focusing position of the first light having passed through the objective lens by changing collimation of the first light entering the objective lens, thereby suppressing the shift Δx of a spot position between the first light and the second light which occurs due to the eccentricity of the optical recording medium. A magnification of the second light is within a magnification range of the first light.

摘要翻译： 光拾取器，光驱动装置和光照射方法技术领域本发明涉及能够抑制斑点位置的发生移位量Dgr×D的光拾取器，光驱动装置和光照射方法。 光拾取器通过照射用于信息记录的第一光或从记录层的信息再现的第一光和与第一光不同的第二光的公共物镜照射光记录介质，光记录介质包括具有 其中位置导向器形成为螺旋形状或类似形式的反射膜，以及设置在与参考表面不同的层位置并且其中形成有与光的照射相对应的标记的记录层，因此信息 被记录。 光学拾取器通过改变进入物镜的第一光的准直来调节已经通过物镜的第一光的聚焦位置，从而抑制发生在第一光和第二光之间的光点位置的偏移＆Dgr; x 由于光记录介质的偏心。 第二光的放大率在第一光的放大范围内。

公开(公告)号：US08305866B2

公开(公告)日：2012-11-06

申请号：US12951967

申请日：2010-11-22

申请人： Norihiro Tanabe ,  Kimihiro Saito ,  Takahiro Miura ,  Yojiro Sumi ,  Noriaki Nishi

发明人： Norihiro Tanabe ,  Kimihiro Saito ,  Takahiro Miura ,  Yojiro Sumi ,  Noriaki Nishi

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/0953 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/13927

摘要： A pickup apparatus includes a light source; a light separator; an object lens that concentrates the light which penetrated the light separator on the optical recording medium; a movable lens; and a light sensing element that receives the reflected light from the optical recording medium separated by the light separator, wherein a coma aberration generated by the transverse shift of the object lens is corrected by a coma aberration which is generated by the deviation of a spherical aberration generated in an optical path from the light source to the object lens and a spherical aberration generated in an optical path from the object lens to a light concentration position on the optical recording medium which are due to the transverse shift.

摘要翻译： 拾取装置包括光源; 光分离器 将透过光分离器的光集中在光记录介质上的物镜; 可移动镜头; 以及光接收来自由光分离器分离的光记录介质的反射光的光感测元件，其中由透镜的横向偏移产生的彗形像差由通过球面像差的偏差产生的彗差来校正 在从光源到物镜的光路中产生的球面像差，以及由于横向偏移而从物镜到光记录介质上的光聚集位置的光路中产生的球面像差。

公开(公告)号：US20110134742A1

公开(公告)日：2011-06-09

申请号：US12951967

申请日：2010-11-22

申请人： Norihiro Tanabe ,  Kimihiro Saito ,  Takahiro Miura ,  Yojiro Sumi ,  Noriaki Nishi

发明人： Norihiro Tanabe ,  Kimihiro Saito ,  Takahiro Miura ,  Yojiro Sumi ,  Noriaki Nishi

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/0953 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/13927

摘要： A pickup apparatus includes a light source; a light separator; an object lens that concentrates the light which penetrated the light separator on the optical recording medium; a movable lens; and a light sensing element that receives the reflected light from the optical recording medium separated by the light separator, wherein a coma aberration generated by the transverse shift of the object lens is corrected by a coma aberration which is generated by the deviation of a spherical aberration generated in an optical path from the light source to the object lens and a spherical aberration generated in an optical path from the object lens to a light concentration position on the optical recording medium which are due to the transverse shift.

摘要翻译： 拾取装置包括光源; 光分离器 将透过光分离器的光集中在光记录介质上的物镜; 可移动镜头; 以及光接收来自由光分离器分离的光记录介质的反射光的光感测元件，其中由透镜的横向偏移产生的彗形像差由通过球面像差的偏差产生的彗差来校正 在从光源到物镜的光路中产生的球面像差，以及由于横向偏移而从物镜到光记录介质上的光聚集位置的光路中产生的球面像差。

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：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：US08599661B2

公开(公告)日：2013-12-03

申请号：US13391026

申请日：2010-08-12

申请人： Norihiro Tanabe ,  Kimihiro Saito

发明人： Norihiro Tanabe ,  Kimihiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/1392 ,  G11B7/00452 ,  G11B7/08511 ,  G11B7/1378 ,  G11B7/24044 ,  G11B7/2405

摘要： The present invention can properly correct spherical aberration.An optical disk device (10) displaces an objective lens (18) so that the objective lens is displaced to a reference lens position as a reference. The optical disk device (10) controls an information light condensing point changing mechanism (55) so as to adjust the focus (FM) of an information light beam (LM) to a recording depth (X) at which the information light beam (LM) is to be applied in a state of the objective lens (18) being placed at a reference lens position (SL). The optical disk device (10) controls a servo light condensing point changing mechanism (35) so as to adjust the focus (FS) of a servo light beam (LS) to a servo layer (104) in the state of the objective lens (18) being placed at the reference lens position (SL).

摘要翻译： 本发明可以适当地矫正球面像差。 光盘装置（10）移动物镜（18），使得物镜移位到基准透镜位置作为基准。 光盘装置（10）控制信息聚光点改变机构（55），以将信息光束（LM）的聚焦（FM）调整到信息光束（LM）的记录深度（X） ）被施加在放置在基准透镜位置（SL）的物镜（18）的状态。 光盘装置（10）控制伺服聚光点改变机构（35），以便在物镜的状态下将伺服光束（LS）的聚焦（FS）调整到伺服层（104） 18）放置在基准透镜位置（SL）。

公开(公告)号：US08254223B2

公开(公告)日：2012-08-28

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： G11B7/00

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。