公开(公告)号：US4507765A

公开(公告)日：1985-03-26

申请号：US369669

申请日：1982-04-19

申请人： Junichi Suzuki ,  Keiji Maruta ,  Kazutaka Noborimoto ,  Satoshi Hineno

发明人： Junichi Suzuki ,  Keiji Maruta ,  Kazutaka Noborimoto ,  Satoshi Hineno

IPC分类号： G02B26/10 ,  G11B7/09 ,  G11B7/00

CPC分类号： G02B26/10 ,  G11B7/0935

摘要： In an optical disc player or other apparatus in which a light beam is directed against a record medium surface for optically reading video or audio information recorded in a track on such surface; an optical scanning assembly is provided with an objective lens interposed in the path of the light beam with its optical axis coinciding substantially with such path therethrough, a lens holder including a first tubular member having the objective lens mounted therein and a second tubular member supporting the first member for rectilinear sliding movement relative thereto in a first direction parallel to the optical axis, a base member supporting the second tubular member of the lens holder for rectilinear sliding movement relative thereto in a second direction at right angles to the first direction, for example, in a direction across or along the track in which information is recorded, first and second coils mounted on the lens holder and being independently energizable, and permanent magnets for producing magnetic flux in linking relation to the first and second coils which are oriented so that energizing of one of the coils is controllable for effecting movements of the objective lens relative to the record medium in the direction of the optical axis for thereby focusing the light beam at the record medium surface and energizing of the other coil is controllable for effecting movement of the objective lens in the second direction whereby to correct for scanning or time base errors.

摘要翻译： 在光盘播放器或其中光束被引导到记录介质表面以便光学地读取记录在该表面上的轨道中的视频或音频信息的光盘播放器或其他设备中; 光学扫描组件设置有插入在光束的路径中的物镜，其光轴基本上与穿过其的路径重合，透镜保持器包括其中安装有物镜的第一管状构件和支撑物镜的第二管状构件 第一构件，其在与光轴平行的第一方向上相对于其直线滑动;支撑透镜架的第二管状构件的基座，用于在与第一方向成直角的第二方向上相对于其相对于第一方向直线滑动。 在沿着记录信息的轨迹的方向上，沿安装在透镜保持器上并且独立地通电的第一和第二线圈以及用于产生与第一和第二线圈的连接关系的磁通量的永磁体，其被定向成使得 一个线圈的通电是可控的，以实现物镜l的运动 在光轴的方向上相对于记录介质，从而将光束聚焦在记录介质表面，并且另一个线圈的激励是可控的，以在第二方向上实现物镜的移动，从而校正扫描或时间 基本错误。

公开(公告)号：US06418108B1

公开(公告)日：2002-07-09

申请号：US09226131

申请日：1999-01-07

申请人： Mitsunori Ueda ,  Takeshi Kubo ,  Junichi Suzuki ,  Satoshi Sakamoto ,  Hiroshi Kawamura ,  Satoshi Hineno

发明人： Mitsunori Ueda ,  Takeshi Kubo ,  Junichi Suzuki ,  Satoshi Sakamoto ,  Hiroshi Kawamura ,  Satoshi Hineno

IPC分类号： G11B700

CPC分类号： G11B7/1374 ,  G11B7/1376 ,  G11B7/13927 ,  G11B11/10532

摘要： An optical head used for recording/reproducing information signals for an optical disc having a light transmitting layer on a recording layer includes an actuator for the collimator lens. A collimator lens arranged between a light source and an objective lens is moved by the actuator for the collimator lens in a direction of cancelling the spherical aberration ascribable to thickness errors in the light transmitting layer. By this structure, the amount of generation of spherical aberration is reduced even if the numerical aperture NA of the objective lens loaded on the optical head is increased to render it possible to increase the recording capacity of the optical disc.

摘要翻译： 用于在记录层上具有透光层的光盘的信息信号记录/再现的光头包括准直透镜的致动器。 布置在光源和物镜之间的准直透镜由准直透镜的致动器沿取消由于透光层中的厚度误差引起的球面像差的方向移动。 通过这种结构，即使加载在光学头上的物镜的数值孔径NA增加，球面像差的产生量也减小，从而可以增加光盘的记录容量。

公开(公告)号：US06084843A

公开(公告)日：2000-07-04

申请号：US39479

申请日：1998-03-16

申请人： Tsuguhiro Abe ,  Junichi Suzuki ,  Satoshi Hineno ,  Kimihiro Saito

发明人： Tsuguhiro Abe ,  Junichi Suzuki ,  Satoshi Hineno ,  Kimihiro Saito

IPC分类号： G11B7/00 ,  G11B7/12 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135 ,  G11B7/20

CPC分类号： G11B7/1372 ,  G11B7/123 ,  G11B7/127 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0006 ,  G11B2007/13727

摘要： The present invention provides a compact recording and reproducing apparatus capable of playing back DVD and CDs including CD-R. This apparatus comprises a means of focusing a light of a first or second wavelength onto a first or second recording media; a first means disposed off the optical axis of the focusing means to generate a light of the first wavelength; a second means disposed on the optical axis of the focusing means to generate a light of the second wavelength; a means of correcting a coma aberration in the light of the first wavelength and guiding the corrected light along the optical axis of the focusing means, and a means of detecting the light of the first or second wavelength reflected from the first or second recording media.

摘要翻译： 本发明提供一种能够播放包含CD-R的DVD和CD的紧凑型记录和再现装置。 该装置包括将第一或第二波长的光聚焦到第一或第二记录介质上的装置; 设置在所述聚焦装置的光轴上以产生所述第一波长的光的第一装置; 设置在聚焦装置的光轴上以产生第二波长的光的第二装置; 校正第一波长的光的彗形像差并沿着聚焦装置的光轴引导校正的光的装置，以及检测从第一或第二记录介质反射的第一或第二波长的光的装置。

公开(公告)号：US07050379B2

公开(公告)日：2006-05-23

申请号：US10466636

申请日：2002-02-28

申请人： Toyokazu Takahashi ,  Satoshi Hineno

发明人： Toyokazu Takahashi ,  Satoshi Hineno

IPC分类号： G11B7/00

CPC分类号： G11B7/1392 ,  G02B9/04 ,  G02B27/0037 ,  G02B27/4238 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/22 ,  G11B2007/13727

摘要： The present invention is relative to an objective lens (15) for an optical pickup, having a numerical aperture not less than 0.8, and adapted for correcting the chromatic aberration at an image point on an optical axis for light with a wavelength within several nm about a reference wavelength which is not larger than 420 nm. This objective lens is made up by a first lens set GR1, having a compound surface S2 of a refractive surface S2r and a diffractive surface S2d, and a second lens set GR2, having a positive refractive power, looking from the light source side. The compound surface of the first lens set is formed by adding the diffractive surface having the positive refractive power to the refractive surface which is an aspherical surface having the negative refractive power. The lens forming the second lens set is a single lens including at least one aspherical lens. This objective lens is small-sized, permits effective correction of chromatic aberration and enables the laser light to be converged to close to the diffraction threshold.

摘要翻译： 本发明是相对于光学拾取器的物镜（15），具有不小于0.8的数值孔径，并且适于校正光轴上的像点上的色差，其波长在几nm左右 不大于420nm的参考波长。 该物镜由具有折射表面S 2r 2的复合表面S 2和衍射面S 2d 2的第一透镜组GR 1构成， / SUB>，具有正光焦度的第二透镜组GR 2，从光源侧看。 第一透镜组的复合表面通过将具有正折光力的衍射面添加到作为具有负屈光力的非球面的折射表面而形成。 形成第二透镜组的透镜是包括至少一个非球面透镜的单透镜。 该物镜是小尺寸的，允许有效校正色差，并使得激光能够收敛以接近衍射阈值。

公开(公告)号：US06339577B1

公开(公告)日：2002-01-15

申请号：US09352367

申请日：1999-07-13

申请人： Satoshi Hineno

发明人： Satoshi Hineno

IPC分类号： G11B700

CPC分类号： G11B7/1353 ,  G11B7/1378 ,  G11B7/13927 ,  G11B7/1398

摘要： A beam reshaping device includes first and second beam converting units having beam converging powers different in two orthogonal directions. The first and second beam converting units are arranged such that conjugate points correspond to each other in the two orthogonal directions, thereby reshaping the sectional form of a laser beam emitted from a laser light source, while effectively preventing occurrence of astigmatism. The beam reshaping device may be applied to an optical head device and which in turn may be used in an optical disk system.

摘要翻译： 光束整形装置包括具有在两个正交方向上不同的束会聚功率的第一和第二光束转换单元。 第一和第二光束转换单元布置成使得共轭点在两个正交方向上彼此对应，从而重新形成从激光光源发射的激光束的截面形状，同时有效地防止散光的发生。 光束整形装置可以应用于光学头装置，而光头装置又可用于光盘系统。

公开(公告)号：US5428596A

公开(公告)日：1995-06-27

申请号：US264621

申请日：1994-06-23

申请人： Satoshi Hineno ,  Yoshito Asoma ,  Nobuhiko Ando

发明人： Satoshi Hineno ,  Yoshito Asoma ,  Nobuhiko Ando

IPC分类号： G11B7/135 ,  G11B11/10 ,  G11B11/105 ,  G11B7/095

CPC分类号： G11B7/1356 ,  G11B11/10532

摘要： An optical pickup apparatus for recording information signals on an optical recording medium. The apparatus includes a light source radiating a diverging light flux, an object lens on which a light flux radiated from said light source is incident, for converging the light flux on the optical recording medium, a light flux dividing device arranged at a position on a light path between the light source and the object lens at which the light flux remains a diverging light flux, which light flux dividing device divests reflected light flux from the optical recording medium out of the light path, a light detection unit for detecting the reflected light diverted from the light path by the light flux dividing device, and a polarized light dependent light flux separating device arranged at a position on a light path between the light flux dividing device and the light detection device at which the reflected light flux is a converging light flux. In this manner, recording characteristics of information signals may be improved and a simplified structure and a small size of the apparatus may be realized.

摘要翻译： 一种用于在光学记录介质上记录信息信号的光学拾取装置。 该装置包括：辐射发散光束的光源;从所述光源辐射的光束入射的物镜，用于将光通量会聚在光记录介质上;光束分配装置，其布置在 在光源和物镜之间的光路中，光束保持发散光束，该光束分配装置将光记录介质的反射光束从光路中分离出来;光检测单元，用于检测反射光 通过光束分配装置从光路分支的偏振光依赖性光束分离装置，配置在光束分离装置与光检测装置之间的光路上的位置处的反射光束为会聚光的偏振光相关光束分离装置 助焊剂 以这种方式，可以改善信息信号的记录特性，并且可以实现装置的简化结构和小尺寸。

公开(公告)号：US20070263521A1

公开(公告)日：2007-11-15

申请号：US11801294

申请日：2007-05-09

申请人： Isao Ichimura ,  Takashi Nakao ,  Satoshi Hineno

发明人： Isao Ichimura ,  Takashi Nakao ,  Satoshi Hineno

IPC分类号： G11B7/00

CPC分类号： G11B7/139 ,  G11B7/1356 ,  G11B7/1359 ,  G11B7/1378 ,  G11B7/13925 ,  G11B2007/0013

摘要： An optical pickup is configured to emit a light beam to an optical disk having a plurality of recording layers and is configured to receive a reflection light beam obtained when the emitted light beam is reflected at a recording layer of the optical disk. The optical pickup includes an objective lens configured to focus the light beam emitted from a light source at a focused recording layer of the optical disk and receive the reflection light beam; a focusing lens configured to focus the reflection light beam received by the objective lens; and a stray-light removing element including the boundary surface and being configured to remove stray light from the reflection light beam by reflecting only the stray light included in the reflection light beam reflected at an unfocused recording layer at the boundary surface.

摘要翻译： 光拾取器被配置为向具有多个记录层的光盘发射光束，并且被配置为接收当发射的光束在光盘的记录层处被反射时获得的反射光束。 光拾取器包括物镜，被配置为将从光源发射的光束聚焦在光盘的聚焦记录层并接收反射光束; 聚焦透镜，被配置为聚焦由所述物镜接收的反射光束; 以及包括所述边界面的杂散光去除元件，其被配置为通过仅反射在所述边界表面处未聚焦的记录层反射的反射光束中包括的杂散光来从所述反射光束去除杂散光。

公开(公告)号：US06795254B2

公开(公告)日：2004-09-21

申请号：US10362515

申请日：2003-02-24

申请人： Satoshi Hineno

发明人： Satoshi Hineno

IPC分类号： G02B1318

CPC分类号： G11B7/1374 ,  G11B7/13922

摘要： The present invention is concerned with an objective lens for an optical pickup, which is made up by a single lens of a meniscus structure, and which includes, looking sequentially from a light source side, a first surface S1 formed by an aspherical surface, having a positive refractive power, and a second surface S2, formed by an aspherical surface, having a negative refractive power, with the numerical aperture (NA) of the lens being not less than 0.8. The aspherical shape Zi of the aspherical surfaces of the first and second surfaces is given by the equation: Z i = r i - 1 ⁢   ⁢ h 2 1 + 1 - ( 1 + k i ) ⁢   ⁢ r i - 2 ⁢   ⁢ h 2 + A i ⁢   ⁢ h 4 + B i ⁢   ⁢ h 6 + C i ⁢   ⁢ h 8 + D i ⁢   ⁢ h 10 + E i ⁢   ⁢ h 12 + F i ⁢   ⁢ h 14 + G i ⁢   ⁢ h 16 + H i ⁢   ⁢ h 18 + J i ⁢   ⁢ h 20 with the height from the optical axis being h, where i is the surface number, as counted from the light source side, r is the radius of curvature of the aspherical surface, k is the cone constant, with k

摘要翻译： 本发明涉及一种用于光学拾取器的物镜，其由弯液面结构的单个透镜构成，并且包括从光源侧依次观察由非球面形成的第一表面S1，具有由 正的折射光焦度和由具有负折光力的非球面形成的第二表面S2，透镜的数值孔径（NA）不小于0.8。第一透镜的非球面形状Zi 并且第二表面由下式给出：从光轴的高度是h，其中i是从光源侧计数的表面数，r是非球面的曲率半径，k是锥体常数 ，k <0，A〜J表示非球面系数。 另外，要满足以下条件：其中r1是第一表面的曲率半径，r2是第二表面的曲率半径，N是玻璃质材料的折射率。

公开(公告)号：US06347066B1

公开(公告)日：2002-02-12

申请号：US09605527

申请日：2000-06-29

申请人： Satoshi Hineno

发明人： Satoshi Hineno

IPC分类号： G11B712

CPC分类号： G11B7/1359 ,  G11B7/0901 ,  G11B7/0912 ,  G11B7/0916 ,  G11B7/0943 ,  G11B7/131 ,  G11B7/1381

摘要： The invention relates to an optical pickup and an optical disk apparatus applicable to, for example, an optical disk apparatus adapted to access a high-density recorded optical disk, so as to realize a simplified structure capable of preventing any characteristic deterioration of a focus error signal caused by horizontal deviation. An optical path length difference generator unit 39 is disposed in an optical path to produce an optical path difference between two luminous fluxes obtained through resolution of return light.

摘要翻译： 本发明涉及适用于例如适用于存取高密度记录光盘的光盘装置的光拾取器和光盘装置，以便实现能够防止聚焦误差的任何特性劣化的简化结构 信号由水平偏差引起。 光路长度差发生器单元39设置在光路中以产生通过分辨返回光获得的两个光通量之间的光程差。

公开(公告)号：US5550798A

公开(公告)日：1996-08-27

申请号：US224344

申请日：1994-04-07

申请人： Satoshi Hineno ,  Nobuhiko Ando

发明人： Satoshi Hineno ,  Nobuhiko Ando

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

CPC分类号： G11B11/10545 ,  G11B11/10543 ,  G11B7/1356 ,  G11B2007/0006

摘要： An optical head apparatus for a magneto-optical recording medium including a light beam source, an objective lens, a separating optical system, and a photodetector. The objective lens is provided for irradiating an output light beam from the light beam source as a focused light beam to the surface of the signal recording surface of the magneto-optical recording medium. The separating optical system separates the light beam radiated from the light beam source from a reflected light beam reflected by the signal recording surface of the magneto-optical recording medium via the objective lens. The photodetector receives the reflected light beam thus separated by the separating optical system. The separating optical system also includes an enhancement element which apparently increases the Kerr rotation angle of the reflected light beam.

摘要翻译： 一种用于包括光束源，物镜，分离​​光学系统和光电检测器的磁光记录介质的光学头装置。 物镜被设置用于将来自光束源的输出光束作为聚焦光束照射到磁光记录介质的信号记录表面的表面。 分离光学系统通过物镜将从光束源辐射的光束与由光磁记录介质的信号记录表面反射的反射光束分离。 光电检测器接收由分离光学系统分离的反射光束。 分离光学系统还包括明显增加反射光束的克尔旋转角度的增强元件。