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1. 发明授权

US4636625A Method and device for detecting focal point 失效
标题翻译：检测焦点的方法和装置
公开(公告)号：US4636625A
公开(公告)日：1987-01-13
申请号：US772756
申请日：1985-09-05
申请人： Masami Emoto , Masanobu Nishimiya , Hiroyuki Kiguchi
发明人： Masami Emoto , Masanobu Nishimiya , Hiroyuki Kiguchi
IPC分类号： G11B7/09 , G11B7/135 , G01J1/20 , G11B7/12
CPC分类号： G11B7/1381 , G11B7/0908 , G11B7/0916 , G11B7/0945
摘要： Less than half of a laser beam reflected from an optical information storage medium through an objective lens is detected by a detector having two light detecting areas. The sum of output signals from the light detecting areas of the detector is employed to detect when the objective lenas enters a focusing range. The difference between the output signals is employed to detect when the laser beam is focused on the optical information storage medium.
摘要翻译：通过具有两个光检测区域的检测器检测到从光学信息存储介质通过物镜反射的激光束的不足一半。来自检测器的光检测区域的输出信号的总和用于检测物镜线何时进入聚焦范围。采用输出信号之间的差异来检测激光束何时聚焦在光学信息存储介质上。

2. 发明授权

US5070494A Optical pickup device with dual-mode drive mechanism 失效
标题翻译：具有双模驱动机构的光学拾取装置
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。

3. 发明授权

US4683559A Optical pickup with a two-detector arrangement 失效
标题翻译：具有双检测器布置的光学拾取器
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。

4. 发明授权

US4436415A Exposure process for use in a variable magnification copying machine 失效
标题翻译：用于可变倍率复印机的曝光过程
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。

5. 发明授权

US4684799A Focus detection method involving cutting more than half of light beam reflected from disc 失效
标题翻译：聚焦检测方法涉及切割一半以上从光盘反射的光束
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。

6. 发明授权

US4052127A Developing system 失效
标题翻译：发展系统
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.

7. 发明授权

US5694385A Optical pickup apparatus 失效
标题翻译：光拾取装置
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。

8. 发明授权

US4687916A Optical pick-up device for both focus and error tracking detection 失效
标题翻译：用于聚焦和误差跟踪检测的光学拾取装置
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。

9. 再颁专利

USRE40414E1 Optical pickup apparatus 失效
标题翻译：光拾取装置
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。

10. 发明授权

US5815473A Optical pickup device for detecting tracking error of optical disks with different track pitches 失效
标题翻译：用于检测具有不同轨道间距的光盘的跟踪误差的光学拾取装置
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。

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