公开(公告)号：US4683559A

公开(公告)日：1987-07-28

申请号：US602189

申请日：1984-04-19

申请人： Masami Emoto ,  Hiroshi Gotoh ,  Hideo Inuzuka

发明人： Masami Emoto ,  Hiroshi Gotoh ,  Hideo Inuzuka

IPC分类号： G11B7/09 ,  G11B7/00

CPC分类号： G11B7/0901 ,  G11B7/0916 ,  G11B7/13

摘要： An optical pickup for detecting a distance to an optical disk on which information is optically stored includes a tracking error detecting device for detecting a tracking error by receiving a part of the light reflected from the disk and a focusing error detecting device for detecting the remaining part of the light reflected from the disk, structured such that the tracking error detecting device receives 60% or more of the reflected light.

摘要翻译： 用于检测光学存储信息的光盘的距离的光学拾取器包括：跟踪误差检测装置，用于通过接收从盘反射的光的一部分来检测跟踪误差;以及聚焦误差检测装置，用于检测剩余部分 从光盘反射的光被构造成使得跟踪误差检测装置接收60％以上的反射光。

公开(公告)号：US4684799A

公开(公告)日：1987-08-04

申请号：US880373

申请日：1986-06-30

申请人： Masami Emoto ,  Hideo Inuzuka

发明人： Masami Emoto ,  Hideo Inuzuka

IPC分类号： G02B7/34 ,  G02B27/40 ,  G11B7/09 ,  G11B7/135 ,  G01J1/20

CPC分类号： G11B7/1381 ,  G02B27/40 ,  G02B7/34 ,  G11B7/0908 ,  G11B7/0916

摘要： A knife edge type focus detection method for optics associated with an optical pickup is disclosed. A light intercepting member is interposed between an object lens and a light receiving element for focus detection in order to cut 60-95% of a reflected flux for focus detection before the flux reaches the light receiving element. The intercepted part of the flux includes a light ray which propagates through the optical axis of the optics.

摘要翻译： 公开了一种用于与光学拾取器相关联的光学器件的刀刃式焦点检测方法。 在物镜和用于焦点检测的光接收元件之间插入遮光部件，以在光束到达光接收元件之前切割用于焦点检测的反射光束的60-95％。 通量的截取部分包括通过光学器件的光轴传播的光线。

公开(公告)号：US4687916A

公开(公告)日：1987-08-18

申请号：US754816

申请日：1985-07-12

申请人： Masami Emoto ,  Hideo Inuzuka

发明人： Masami Emoto ,  Hideo Inuzuka

IPC分类号： G11B7/09 ,  G11B7/135 ,  G01J1/20

CPC分类号： G11B7/1372 ,  G11B7/0908 ,  G11B7/0916 ,  G11B7/1381

摘要： An optical pick-up device suitable for use in an optical disk memory system includes a semiconductor laser unit which emits a laser light beam which, in turn, passes through a beam splitter, a quarter-wave plate, and an objective lens to impinge on an optical disc thereby forming a light spot thereon. The light is then reflected from the disc and this reflected light passes through the objective lens and the quarter-wave plate and its direction of advancement is altered by the beam splitter to move into a convergent lens. Then, as the reflected light further advances, it is partly blocked by a tracking error detecting sensor and the remaining non-blocked portion of the reflected light impinges upon a focusing error detecting sensor. The objective and convergent lenses have f.sub.0 and f.sub.1 as their focal distances, respectively, and, preferably, ratio f.sub.0 /f.sub.1 is set equal to or larger than approximately 10.

摘要翻译： 适用于光盘存储器系统的光学拾取装置包括：半导体激光器单元，其发射激光束，该激光光束又穿过分束器，四分之一波片和物镜，以撞击 从而在其上形成光点。 然后光从盘反射并且该反射光穿过物镜，并且四分之一波片及其前进方向由分束器改变以移动到会聚透镜。 然后，随着反射光进一步前进，其被跟踪误差检测传感器部分地阻挡，并且反射光的剩余非阻挡部分撞击聚焦误差检测传感器。 目标和会聚透镜分别具有f0和f1作为它们的焦距，并且优选地将比率f0 / f1设置为等于或大于约10。

公开(公告)号：US4436415A

公开(公告)日：1984-03-13

申请号：US332872

申请日：1981-12-21

申请人： Masami Emoto

发明人： Masami Emoto

IPC分类号： G03B27/34 ,  G03B27/50 ,  G03B27/52 ,  G03G15/04 ,  G03G15/041

CPC分类号： G03B27/525 ,  G03G15/041

摘要： A photosensitive member is subject to a slitwise exposure. An imaging lens system is displaced in accordance with the magnitude of a magnification being utilized during a copying process which is switched. Disposed adjacent to the end face of a lens in the imaging lens system is at least one rectangular light shield member so that its lengthwise dimension corresponds to a slitwise scan direction. The light shield member is movable into or out of a light flux which is utilized for purpose of exposure, and is integral with the imaging lens system as the latter is displaced in accordance with a magnification being utilized during a particular copying process. During a light shielding operation, the light shield member is adapted to be disposed within or wedged partly into the light flux of exposure. As the copying magnification is switched, the amount of exposure light which is cut off by the light shield member changes, whereby the distribution of exposure light in the slit-shaped exposure station is made uniform as viewed lengthwise of the exposure station.

摘要翻译： 感光构件经受狭缝曝光。 成像透镜系统根据切换的复印过程中所利用的倍率的大小而移位。 在成像透镜系统中与透镜的端面相邻配置有至少一个矩形遮光部件，使得其纵向尺寸对应于狭缝扫描方向。 遮光构件可移动进入或流出用于曝光的光束，并且与成像透镜系统成一体，因为后者根据在特定复印过程中利用的倍率而移位。 在遮光操作期间，遮光构件适于被布置在部分或部分地嵌入曝光光束内。 随着复印倍率的切换，遮光构件切断的曝光量变化，使得狭缝状曝光站中的曝光光的分布在曝光站的长度方向上均匀。

公开(公告)号：US4052127A

公开(公告)日：1977-10-04

申请号：US593293

申请日：1975-07-07

申请人： Shoji Kuroishi ,  Tsuguo Kimura ,  Masami Emoto ,  Shiro Yamamoto

发明人： Shoji Kuroishi ,  Tsuguo Kimura ,  Masami Emoto ,  Shiro Yamamoto

IPC分类号： G03G15/06 ,  G03G15/10

CPC分类号： G03G15/065 ,  G03G15/10

摘要： A developing system is provided for a copying process such as an electrophotographic copying process in which a developer is supplied to the surface of a member which is formed with an electrostatic latent image to provide developing thereof. An electrode is disposed opposite the surface of the member with the developer interposed therebetween, and the induction potential of the electrode is maintained below a given value by means of a constant voltage element. The potential of the electrode is induced by either the image portion of the member's surface having the electrostatic latent image or by an unexposed, separate charged portion thereof.

公开(公告)号：US5694385A

公开(公告)日：1997-12-02

申请号：US311050

申请日：1994-09-23

申请人： Yoshitaka Takahashi ,  Hiroshi Akiyama ,  Masami Emoto

发明人： Yoshitaka Takahashi ,  Hiroshi Akiyama ,  Masami Emoto

IPC分类号： G11B7/00 ,  G11B7/12 ,  G11B7/135

CPC分类号： G11B7/1356 ,  G11B11/10543 ,  G11B7/123 ,  G11B7/1359 ,  G11B7/22

摘要： Small-sized and light-weighted optical pickup apparatus capable of eliminating the effect due to the flaring light rays and performing the signal detection of high reliability is provided. In the apparatus, the quarter-wave (.lambda./4) plate and the reflection-type birefringent prism provided with the deflecting function of deflecting the reflection light rays reflected on the optical information recording medium and the light rays flux separating function of separating the reflected light rays from the outgoing light rays are disposed in the optical path between the semiconductor laser constructing the optical pickup portion and the objective lens, and the light-receiving element for receiving the reflection light rays from the optical information recording medium which are defleced and separated by the reflection-type birefringent prism is disposed on a single (same) substrate together with the semiconductor laser.

摘要翻译： 提供了能够消除由于扩张光线引起的影响并执行高可靠性的信号检测的小型和轻量级的光学拾取装置。 在该装置中，四分之一波长（λ/ 4）板和反射型双折射棱镜具有使在光信息记录介质上反射的反射光线偏转的偏转功能和分离反射的光线通量分离功能 来自出射光线的光线设置在构成光学拾取部分的半导体激光器和物镜之间的光路中，以及用于接收来自光信息记录介质的反射光线的光接收元件，其被去除和分离 通过反射型双折射棱镜与半导体激光器一起设置在单个（相同）基板上。

公开(公告)号：US5070494A

公开(公告)日：1991-12-03

申请号：US332749

申请日：1989-04-03

申请人： Masami Emoto ,  Masanobu Nishimiya ,  Akihiko Okamoto

发明人： Masami Emoto ,  Masanobu Nishimiya ,  Akihiko Okamoto

IPC分类号： G11B7/005 ,  G11B7/135 ,  G11B11/105 ,  G11B13/04

CPC分类号： G11B7/005 ,  G11B11/10545 ,  G11B11/10597 ,  G11B13/04 ,  G11B7/1365

摘要： An optical pickup device for optically reproducing an information recorded on a recording medium of a magneto-optical disc or a write-only-read-many optical disc, includes a semiconductor laser, an objective lens for converging the laser light emitted by the laser on the recording medium, a photo-detector for detecting a light reflected from the recording medium, a beam splitter for leading the emitted light from the laser to the objective lens and for leading said light reflected by the recording medium to the photodetector, a first phase plate disposed between the beam splitter and the objective lens, a second phase plate disposed between the beam splitter and the photo-detector, and a rotator for rotate the first phase plate in such a manner than the beam splitter forbids to transmit the light reflected by the recording medium into the laser in a case where the recording medium is said write-only-read-many optical disc, and that the beam splitter allows to transmit the light reflected by the recording medium into the laser in a case where the recording medium is the magneto-optical disc.

摘要翻译： 一种用于光学地再现记录在磁光盘或只读多光盘的记录介质上的信息的光学拾取装置包括半导体激光器，用于将由激光器发射的激光会聚的物镜 记录介质，用于检测从记录介质反射的光的光检测器，用于将从激光发射的光引导到物镜并将由记录介质反射的所述光引导到光电检测器的分束器，第一相 设置在分束器和物镜之间的板，设置在分束器和光检测器之间的第二相位板，以及用于以不同于分束器的方式旋转第一相位板的旋转器，禁止透射由 在记录介质是所述仅写入许多光盘的情况下，记录介质进入激光器，并且分束器允许透射光反射 在记录介质是磁光盘的情况下，由记录介质输入激光器。

公开(公告)号：USRE40414E1

公开(公告)日：2008-07-01

申请号：US09577006

申请日：2000-05-22

申请人： Yoshitaka Takahashi ,  Hiroshi Akiyama ,  Masami Emoto

发明人： Yoshitaka Takahashi ,  Hiroshi Akiyama ,  Masami Emoto

IPC分类号： G11B7/00

CPC分类号： G11B7/1356 ,  G11B7/123 ,  G11B7/1359 ,  G11B7/22 ,  G11B11/10543

摘要： Small-sized and light-weighted optical pickup apparatus capable of eliminating the effect due to the flaring light rays and performing the signal detection of high reliability is provided.In the apparatus, the quarter-wave (λ/4) plate and the reflection-type birefringent prime provided with the deflecting function of deflecting the reflection light rays reflected on the optical information recording medium and the light rays flux separating function of separating the reflected light rays from the outgoing light rays are disposed in the optical path between the semiconductor laser constructing the optical pickup portion and the objective lens, and the light-receiving element for receiving the reflection light rays from the optical information recording medium which are defleced and separated by the reflection-type birefringent prism is disposed on a single (same) substrate together with the semiconductor laser.

摘要翻译： 提供了能够消除由于扩张光线引起的影响并执行高可靠性的信号检测的小型和轻量级的光学拾取装置。 在该装置中，四分之一波长（λ/ 4）板和反射型双折射源具有偏转反射光反射的光学信息记录介质上的反射光的偏转功能和分离反射的光线通量分离功能 来自出射光线的光线设置在构成光学拾取部分的半导体激光器和物镜之间的光路中，以及用于接收来自光信息记录介质的反射光线的光接收元件，其被去除和分离 通过反射型双折射棱镜与半导体激光器一起设置在单个（相同）基板上。

公开(公告)号：US5815473A

公开(公告)日：1998-09-29

申请号：US628777

申请日：1996-04-05

申请人： Yoshitaka Takahashi ,  Masami Emoto

发明人： Yoshitaka Takahashi ,  Masami Emoto

IPC分类号： G11B7/09 ,  G11B7/135

CPC分类号： G11B7/0901 ,  G11B7/094 ,  G11B7/0943

摘要： An optical pickup device includes an optical system which forms a main spot and a set of sub-spots on an optical disk by a beam of light passing the optical system. A photodetector unit outputs first signals in response to a reflection beam from the main spot, and outputs second signals in response to reflection beams from the sub-spots. A tracking error detector includes a first detection circuit designed to output a first tracking error signal for a first track pitch, and a second detection circuit designed to output a second tracking error signal for a second track pitch different from the first track pitch. A switch selectively connects one of the first detection circuit and the second detection circuit to an output of the tracking error detector in response to a track pitch of the optical disk, so that one of the first and second tracking error signals appropriate for the track pitch of the optical disk is output.

摘要翻译： 光学拾取装置包括通过光学系统的光束在光盘上形成主光点和一组子点的光学系统。 光检测器单元响应于来自主光点的反射光输出第一信号，并且响应于来自子光点的反射光，输出第二信号。 跟踪误差检测器包括被设计为输出第一轨道间距的第一跟踪误差信号的第一检测电路和被设计为输出与第一轨道间距不同的第二轨道间距的第二跟踪误差信号的第二检测电路。 响应于光盘的轨道间距，开关选择性地将第一检测电路和第二检测电路中的一个连接到跟踪误差检测器的输出，使得第一和第二跟踪误差信号之一适合于轨道间距 输出光盘。

公开(公告)号：US5073888A

公开(公告)日：1991-12-17

申请号：US340044

申请日：1989-04-18

申请人： Yoshitaka Takahashi ,  Hiroshi Koide ,  Hiroshi Gotoh ,  Masami Emoto ,  Syuichi Honda

发明人： Yoshitaka Takahashi ,  Hiroshi Koide ,  Hiroshi Gotoh ,  Masami Emoto ,  Syuichi Honda

IPC分类号： G11B11/105

CPC分类号： G11B11/10545 ,  G11B11/10536 ,  G11B11/10576

摘要： An optical pickup device for recording, reproducing or erasing an information, comprises a sole semiconductor laser beam source for emitting a luminous flux, a polarizer for receiving the luminous flux emitted from the sole semiconductor laser beam source and dividing the received luminous flux into a plurality of luminous fluxes, and a sole object lens for receiving a plurality of the divided luminous fluxes and converging each of a plurality of the received luminous fluxes on small spots on an optical information recording medium, respectively.

摘要翻译： 用于记录，再现或擦除信息的光学拾取装置包括用于发射光束的唯一半导体激光束源，用于接收从单个半导体激光束源发射的光束并将接收的光束分成多个的偏振器 以及单独的物镜，用于分别接收多个划分的光束并将多个接收光束中的每一个会聚在光信息记录介质上的小点上。