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1. 发明授权

US06529465B2 Optical system for optical disk drive 失效
标题翻译：光盘驱动器光学系统
公开(公告)号：US06529465B2
公开(公告)日：2003-03-04
申请号：US09795458
申请日：2001-03-01
申请人： Toshiyuki Kase , Hiroshi Nishikawa , Wataru Kubo , Ryoichi Nakanishi , Amit Jain
发明人： Toshiyuki Kase , Hiroshi Nishikawa , Wataru Kubo , Ryoichi Nakanishi , Amit Jain
IPC分类号： G11B700
CPC分类号： G11B7/122 , G11B7/08564 , G11B7/08576 , G11B7/1378 , G11B11/10543 , G11B11/10554 , G11B11/10567 , G11B11/1058
摘要： Disclosed is an optical system for an optical disk drive for reading/writing data from/in an optical disk. The optical system includes a light source emitting a parallel laser beam, a deflector having a rotatable mirror surface. The parallel laser beam emitted by the light source is incident on the mirror surface of the deflector and is deflected towards an objective lens system which faces the optical disk. A relay lens system is provided between the deflector and the objective lens system such that the mirror surface and a front principal plane of the objective lens system have a substantially conjugate relationship.
摘要翻译：公开了一种用于从光盘读取/写入数据的光盘驱动器的光学系统。光学系统包括发射平行激光束的光源，具有可旋转镜面的偏转器。由光源发射的平行激光束入射在偏转器的镜面上，朝向面向光盘的物镜系统偏转。在偏转器和物镜系统之间提供中继透镜系统，使得物镜系统的镜面和前主平面具有基本上共轭的关系。

2. 发明授权

US5751491A Method of adjusting beam axis of optical pick-up 失效
标题翻译：调整光学拾音器光束轴的方法
公开(公告)号：US5751491A
公开(公告)日：1998-05-12
申请号：US677277
申请日：1996-07-09
申请人： Toshiyuki Kase , Hiroshi Nishikawa
发明人： Toshiyuki Kase , Hiroshi Nishikawa
IPC分类号： G11B7/08 , G02B27/62 , G11B7/09 , G11B7/22 , G11B11/105 , G02B27/10 , G02B7/02
CPC分类号： G02B27/62 , G11B7/22 , G11B11/10543
摘要： A light beam emitted from a laser diode passes through a polarization beam splitter, a movable mirror, a reference prism supported in a pair of rails, a sliding mirror and is incident on a cat's-eye optical system. The light beam reflected in the cat's-eye optical system returns to the polarization beam splitter along an optical path of the incident light beam, is separated by a polarizing separating plane and is directed to a television camera. The front surface of the reference prism is perpendicular to the rails. Thus, the light beam reflected at the front surface of the reference prism is directed to the television camera along an optical path which is inclined relative to the optical path of the incident light beam in accordance with the direction of the rails. Consequently, if the inclination of the movable mirror is adjusted such that the light spots of both of the reflected beams displayed on the monitor coincide, the optical path of the incident light beam is parallel to the rails.
摘要翻译：从激光二极管发射的光束通过偏振分束器，可移动反射镜，支撑在一对轨道中的参考棱镜，滑动反射镜并入射到猫眼光学系统。反射在猫眼光学系统中的光束沿着入射光束的光路返回到偏振分束器，被偏振分离平面分离并被引导到电视摄像机。参考棱镜的前表面垂直于导轨。因此，在参考棱镜的前表面处反射的光束沿着相对于入射光束的光路相对于轨道的方向倾斜的光路被引导到电视摄像机。因此，如果调整可动镜的倾斜度，使得显示在监视器上的两个反射光束的光点重合，则入射光束的光路平行于轨道。

3. 发明授权

US5373437A Device for and method of reducing cross talk in optical disk device 失效
标题翻译：减少光盘装置串扰的装置和方法
公开(公告)号：US5373437A
公开(公告)日：1994-12-13
申请号：US740726
申请日：1991-08-06
申请人： Tsuyoshi Itoh , Isao Okuda , Hiroshi Nishikawa , Toshiyuki Kase , Ryota Ogawa , Masahiro Oono , Koichi Maruyama , Makoto Iki
发明人： Tsuyoshi Itoh , Isao Okuda , Hiroshi Nishikawa , Toshiyuki Kase , Ryota Ogawa , Masahiro Oono , Koichi Maruyama , Makoto Iki
IPC分类号： G02B7/28 , G11B7/09 , G11B7/095 , G11B7/00
CPC分类号： G11B7/0909
摘要： A device in which an offset is added to a focusing error signal to control an objective lens and thereby reduce the generation of cross-talk when a beam spot that is converged on an optical disk crosses over a wall of a groove of a track of the disk. By adding the offset to the focusing error signal, the objective lens is moved out of focus with the disk. Thus, the shape of a beam spot formed on a photo sensor is changed from a circle to an ellipse. A condenser lens provided for forming the beam spot is moved along the optical axis thereof in such a manner that an output of a recorded signal of the disk is at a maximum value. As a result, the objective lens is brought into focus on the disk. Thereafter, the objective lens is focused on the disk in accordance with the focusing error signal to which the offset is added, while maintaining the beam spot in the shape of an ellipse.
摘要翻译：一种装置，其中偏移量被加到聚焦误差信号上以控制物镜，从而当会聚在光盘上的束斑横跨在光盘的轨道的凹槽的壁上时减少串扰的产生磁盘。通过将偏移量加到聚焦误差信号上，物镜与光盘移出对焦。因此，形成在光传感器上的光斑的形状从圆形变为椭圆形。设置用于形成束斑的聚光透镜沿其光轴移动，使得盘的记录信号的输出处于最大值。结果，将物镜聚焦在盘上。此后，根据添加有偏移量的聚焦误差信号将物镜聚焦在光盘上，同时将光束点保持为椭圆形状。

4. 发明授权

US06411588B1 Optical data recording/reproducing device 失效
标题翻译：光学数据记录/再现装置
公开(公告)号：US06411588B1
公开(公告)日：2002-06-25
申请号：US09152329
申请日：1998-09-14
申请人： Toshiyuki Kase , Hiroshi Nishikawa
发明人： Toshiyuki Kase , Hiroshi Nishikawa
IPC分类号： G11B700
CPC分类号： G11B7/133 , G11B7/1263 , G11B7/1374 , G11B7/1381
摘要： Disclosed is an optical data recording/reproducing device which is provided with a laser diode for emitting laser beam, an illuminating optical system including an objective lens which converges the laser beam emitted by the laser diode on an optical disc, a monitoring optical system including a light receiving element which receives a part of the laser beam emitted by the laser diode, and a driving circuit which drives the laser diode in accordance with an output signal of the light receiving element. A coupling efficiency of the illuminating optical system and a coupling efficiency of the monitoring optical system are made substantially the same.
摘要翻译：公开了一种设置有用于发射激光束的激光二极管的光学数据记录/再现装置，包括将由激光二极管发射的激光束会聚在光盘上的物镜的照明光学系统，包括接收由激光二极管发射的激光束的一部分的光接收元件，以及根据光接收元件的输出信号来驱动激光二极管的驱动电路。照明光学系统的耦合效率和监视光学系统的耦合效率基本上相同。

5. 发明授权

US5917599A Lens inclination adjustment system using an interferometer 失效
标题翻译：使用干涉仪的镜头倾斜调节系统
公开(公告)号：US5917599A
公开(公告)日：1999-06-29
申请号：US899332
申请日：1997-07-23
申请人： Hiroshi Nishikawa , Toshiyuki Kase
发明人： Hiroshi Nishikawa , Toshiyuki Kase
IPC分类号： G01B11/27 , G01B9/02
CPC分类号： G01B11/27
摘要： A lens inclination adjustment system includes an interferometer unit, an inclination adjusting unit and a data processing unit. The data processing unit compares data of the interference fringes generated by the interferometer with predetermined image data to determine inclination status of the lens. Thereafter, in the adjusting unit, the current inclination status of the lens is detected. The data processing unit then calculates a target position to which the inclination status of the lens should be adjusted, and displays a position indicating the current inclination status and the target position on a screen.
摘要翻译：透镜倾斜调节系统包括干涉仪单元，倾斜调节单元和数据处理单元。数据处理单元将由干涉仪产生的干涉条纹的数据与预定的图像数据进行比较，以确定透镜的倾斜状态。此后，在调整单元中，检测透镜的当前倾斜状态。数据处理单元然后计算应该调整透镜的倾斜状态的目标位置，并且在屏幕上显示指示当前倾斜状态和目标位置的位置。

6. 发明授权

US5896362A Lens Inclination Adjustment System 失效
标题翻译：镜头倾斜调整系统
公开(公告)号：US5896362A
公开(公告)日：1999-04-20
申请号：US899701
申请日：1997-07-24
申请人： Isao Okuda , Toshiyuki Kase , Hiroshi Nishikawa
发明人： Isao Okuda , Toshiyuki Kase , Hiroshi Nishikawa
IPC分类号： G01B11/26 , G02B7/02 , G11B7/22 , G11B7/09
CPC分类号： G01B11/26 , G02B7/023 , G11B7/22
摘要： A lens adjustment system including a interferometer and an adjustment unit is used for adjusting an inclination of a lens of an optical data recording/reproducing device. The interferometer detects an inclination angle of the objective lens, then, the inclination of the lens is adjusted at the adjustment portion. There are two light sources: one is for the interferometer; and the other is for monitoring the inclination adjustment. The inclination adjustment unit has an optical element which prevents the beam projected toward the interferometer from being incident on an image receiving surface of the monitoring system, and only the beam for monitoring the inclination adjustment is observed when the inclination of the lens is being adjusted.
摘要翻译：使用包括干涉仪和调整单元的透镜调节系统来调整光学数据记录/再现装置的透镜的倾斜度。干涉仪检测物镜的倾斜角度，然后调节透镜的倾斜度。有两个光源：一个是干涉仪; 另一个用于监测倾斜度调整。倾斜调节单元具有防止投影到干涉仪的光束入射到监视系统的图像接收表面上的光学元件，并且当调整透镜的倾斜度时，仅观察用于监视倾斜调节的光束。

7. 发明授权

US5894370A Inclination monitoring system 失效
标题翻译：倾斜监控系统
公开(公告)号：US5894370A
公开(公告)日：1999-04-13
申请号：US899817
申请日：1997-07-24
申请人： Isao Okuda , Toshiyuki Kase , Hiroshi Nishikawa
发明人： Isao Okuda , Toshiyuki Kase , Hiroshi Nishikawa
IPC分类号： G01B11/26 , G02B27/64 , G11B7/22 , G02B7/02
CPC分类号： G01B11/26 , G02B27/646 , G11B7/22
摘要： An inclination status monitoring system which optically detects an inclination of a lens as it changes its inclination. A light beam having a diameter greater than the diameter of the lens to be inclined is incident on the lens. The lens has a planar reflective surface surrounding a lens portion thereof. The light beam is reflected on the reflective surface, and the reflected beam is converged by a converging lens and focused on an image receiving system, which enables a user to observe the image formed on an image receiving surface. The image of the reflected beam moves simultaneously as the lens inclination is changed.
摘要翻译：倾斜状态监视系统，其在检测透镜的倾斜度时改变其倾斜度。具有大于要倾斜的透镜的直径的直径的光束入射到透镜上。透镜具有围绕其透镜部分的平面反射表面。光束在反射表面上被反射，并且反射光束被会聚透镜会聚并聚焦在图像接收系统上，这使得用户能够观察形成在图像接收表面上的图像。当透镜倾斜度改变时，反射光束的图像同时移动。

8. 发明授权

US5883709A Inclination monitoring system including reflection of collimated light 失效
标题翻译：倾斜监测系统包括准直光的反射
公开(公告)号：US5883709A
公开(公告)日：1999-03-16
申请号：US916047
申请日：1997-08-21
申请人： Isao Okuda , Toshiyuki Kase , Hiroshi Nishikawa
发明人： Isao Okuda , Toshiyuki Kase , Hiroshi Nishikawa
IPC分类号： G01B11/26 , G11B7/095 , G01C1/00
CPC分类号： G01B11/26 , G11B7/0956
摘要： An inclination monitoring system for monitoring an inclination of a lens having a lens portion and a flange portion surrounding the lens portion with respect to a reference plane. The inclination monitoring system includes a light emitting system which emits a collimated light beam towards the lens. The light emitting system and the lens are arranged such that optical axes of the light emitting system and the lens form a first predetermined angle. The monitoring system is further provided with a light receiving system which receives light reflected by the lens. The light receiving system is arranged in a predetermined positional relationship with respect to the light emitting system and the lens. In particular, the collimated light beam illuminates an entire area of the flange portion.
摘要翻译：一种倾斜监视系统，用于监测具有透镜部分的透镜和围绕透镜部分的凸缘部分相对于参考平面的倾斜度。倾斜监测系统包括朝向透镜发射准直光束的发光系统。发光系统和透镜被布置成使得发光系统和透镜的光轴形成第一预定角度。监视系统还设置有接收由透镜反射的光的光接收系统。光接收系统相对于发光系统和透镜以预定的位置关系布置。特别地，准直光束照射凸缘部分的整个区域。

9. 发明授权

US5805363A Collimating lens unit 失效
标题翻译：准直镜头单元
公开(公告)号：US5805363A
公开(公告)日：1998-09-08
申请号：US895815
申请日：1997-07-17
申请人： Isao Okuda , Toshiyuki Kase , Hiroshi Nishikawa
发明人： Isao Okuda , Toshiyuki Kase , Hiroshi Nishikawa
IPC分类号： G02B7/02 , G02B27/09 , G11B7/125 , G11B7/135 , G11B7/22 , H01S3/00
CPC分类号： G02B7/025 , G02B19/0014 , G02B19/0052 , G02B27/09 , G02B27/0972 , G11B7/1376 , G11B7/1398 , H01S3/005
摘要： A collimating lens unit is provided that includes a collimating lens, a lens holder which holds the collimating lens, and an adhesive which secures the collimating lens to the lens holder. The adhesive is applied to remain outside of an effective area of the collimating lens, so that an output beam emitted from the collimating lens unit is not shaded by the adhesive. In particular, the effective area is determined based on the characteristics of an optical system which includes the collimating lens.
摘要翻译：提供了一种准直透镜单元，其包括准直透镜，保持准直透镜的透镜保持器和将准直透镜固定到透镜保持器的粘合剂。施加粘合剂以保持在准直透镜的有效区域的外侧，使得从准直透镜单元发射的输出光束不被粘合剂遮蔽。特别地，有效面积是基于包括准直透镜的光学系统的特性来确定的。

10. 发明授权

US5790501A Information reproducing device 失效
标题翻译：信息再生装置
公开(公告)号：US5790501A
公开(公告)日：1998-08-04
申请号：US939097
申请日：1997-09-26
申请人： Toshiyuki Kase , Hiroshi Nishikawa
发明人： Toshiyuki Kase , Hiroshi Nishikawa
IPC分类号： G11B11/10 , G11B7/135 , G11B7/22 , G11B11/105
CPC分类号： G11B7/1356 , G11B11/10543
摘要： A laser beam emitted from a laser diode passes through a polarizing separating plane of a first polarization beam splitter and forms a beam spot on a magneto-optic disk. The plane of polarization of the laser beam that is reflected at a magnetic film provided on the magneto-optic disk is rotated by the Kerr effect in a fixed direction depending on the direction of magnetization of the magnetic film. The reflected laser beam is made incident on the polarizing separating plane of the first polarization beam splitter. The angle of the polarizing separating plane of the first polarization beam splitter is adjusted with respect to an optic path of the laser beam so that the P polarization component of the laser beam is reflected by 20%.
摘要翻译：从激光二极管发射的激光束通过第一偏振分束器的偏振分离平面并在磁光盘上形成束斑。在设置在磁光盘上的磁性膜上反射的激光束的偏振平面根据磁性膜的磁化方向在固定方向旋转克尔效应。反射的激光束入射到第一偏振分束器的偏振分离平面上。相对于激光束的光路来调整第一偏振分束器的偏振分离面的角度，使得激光束的P偏振分量反射20％。

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