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1. 发明授权

US5687032A Optical device inclination angle adjuster 失效
标题翻译：光学装置倾斜角度调节器
公开(公告)号：US5687032A
公开(公告)日：1997-11-11
申请号：US592178
申请日：1996-01-26
申请人： Nobuo Takeshita , Teruo Fujita , Morihiro Karaki , Mitsuru Irie , Kazuhiko Nakane , Kenjiro Kime , Hideaki Kobachi
发明人： Nobuo Takeshita , Teruo Fujita , Morihiro Karaki , Mitsuru Irie , Kazuhiko Nakane , Kenjiro Kime , Hideaki Kobachi
IPC分类号： G11B7/007 , G11B7/09 , G11B7/095 , G11B7/13 , G11B7/135 , G11B7/14 , G11B7/22 , G02B7/02
CPC分类号： G11B7/133 , G11B7/00718 , G11B7/0908 , G11B7/0916 , G11B7/0933 , G11B7/0935 , G11B7/094 , G11B7/0948 , G11B7/0956 , G11B7/1353 , G11B7/1381 , G11B7/14 , G11B7/22 , G11B7/0909
摘要： An optical device inclination angle adjuster for adjusting an optical axis of an optical device. The optical device has an optical axis and a peripheral portion, and is held by a holder. The adjuster includes an annular plate inserted between the optical device and the holder. The annular plate is in alignment with the peripheral portion of the optical device, and has an opening with an axis in alignment with the optical axis of the optical device to permit passage of light through the opening of the annular plate and through the optical device. A first pair of projections are formed between the annular plate and the optical device. The first pair of projections are disposed diametrically opposite to each other with respect to the optical axis and project in a direction parallel to the optical axis. A second pair of projections are formed between the annular plate and the holder. The second pair of projections are disposed diametrically opposite to each other with respect to the optical axis and project in a direction parallel to the optical axis. The first pair of projections and the second pair of projections are disposed at different rotary angles about the optical axis; whereby the inclination angle is adjusted by rotating the optical device about the first pair of projections or about the second pair of projections.
摘要翻译：一种用于调节光学装置的光轴的光学装置倾斜角度调节器。光学装置具有光轴和周边部分，并由保持器保持。调节器包括插入在光学装置和保持器之间的环形板。环形板与光学装置的周边部分对准，并且具有与光学装置的光轴对准的轴线的开口，以允许光通过环形板的开口并通过光学装置。第一对突起形成在环形板和光学装置之间。第一对突起相对于光轴彼此沿径向相对设置，并且在平行于光轴的方向上突出。第二对突起形成在环形板和支架之间。第二对突起相对于光轴彼此沿径向相对设置，并且沿与光轴平行的方向突出。第一对突起和第二对突起以围绕光轴的不同旋转角设置; 由此通过围绕第一对突起或围绕第二对突起旋转光学装置来调节倾斜角度。

2. 发明授权

US5532987A Focus error detecting device 失效
标题翻译：聚焦误差检测装置
公开(公告)号：US5532987A
公开(公告)日：1996-07-02
申请号：US427811
申请日：1995-04-26
申请人： Teruo Fujita , Morihiro Karaki , Mitsuru Irie , Kazuhiko Nakane
发明人： Teruo Fujita , Morihiro Karaki , Mitsuru Irie , Kazuhiko Nakane
IPC分类号： G11B7/007 , G11B7/09 , G11B7/095 , G11B7/13 , G11B7/135 , G11B7/14 , G11B7/22
CPC分类号： G11B7/133 , G11B7/00718 , G11B7/0908 , G11B7/0916 , G11B7/0933 , G11B7/0935 , G11B7/094 , G11B7/0948 , G11B7/0956 , G11B7/1353 , G11B7/1381 , G11B7/14 , G11B7/22 , G11B7/0909
摘要： A focus error detecting device includes a reflected beam obscurer and a two-division photodetector. The observer obscures a part of the reflected beam. The two-division photodetector includes first and second light receiving sections separated from each other by a division band region which receive the reflected light beam not obscured by the obscurer. A focus error signal is produced based on the output of each light receiving section. Each light receiving section has an array of tapered projections along its edge in the division band region. Alteratively, the light receiving sections have a main part with an edge coincident with an edge of the division band region, and groups of light receiving stripes extending in a direction parallel with the edges of the main part.
摘要翻译：聚焦误差检测装置包括反射光束遮蔽物和二分光电检测器。观察者遮挡了反射光束的一部分。二分光电检测器包括通过接收不被遮挡物遮挡的反射光束的分割带区彼此分离的第一和第二光接收部分。基于每个光接收部分的输出产生聚焦误差信号。每个光接收部分沿其分割带区域的边缘具有锥形突起的阵列。换句话说，光接收部具有与分带区域的边缘重合的边缘的主要部分和沿与主要部分的边缘平行的方向延伸的光接收条纹组。

3. 发明授权

US5453962A Focus error detecting device 失效
标题翻译：聚焦误差检测装置
公开(公告)号：US5453962A
公开(公告)日：1995-09-26
申请号：US109724
申请日：1993-08-19
申请人： Teruo Fujita , Morihiro Karaki , Mitsuru Irie , Kazuhiko Nakane
发明人： Teruo Fujita , Morihiro Karaki , Mitsuru Irie , Kazuhiko Nakane
IPC分类号： G11B7/007 , G11B7/09 , G11B7/095 , G11B7/13 , G11B7/135 , G11B7/14 , G11B7/22
CPC分类号： G11B7/133 , G11B7/00718 , G11B7/0908 , G11B7/0916 , G11B7/0933 , G11B7/0935 , G11B7/094 , G11B7/0948 , G11B7/0956 , G11B7/1353 , G11B7/1381 , G11B7/14 , G11B7/22 , G11B7/0909
摘要： A focus error detecting device includes a reflected beam splitter and at least two two-division photodetectors. The reflected beam splitter includes a diffraction grating part and a non-diffraction grating part separated by a line dividing a reflected beam. The dividing line projects to a line orthogonal to a guide groove on the information recording medium. The diffraction grating part produces a first split beam, and non-diffraction grating part produces a second split beam. Each two-division photodetector receives one of the first and second split beams incident and their light receiving sections, and produces a signal for effecting focus control.
摘要翻译：聚焦误差检测装置包括反射分束器和至少两个二分光电检测器。反射分束器包括由划分反射光束的线分开的衍射光栅部分和非衍射光栅部分。分割线突出到与信息记录介质上的引导槽正交的线上。衍射光栅部分产生第一分束，非衍射光栅部分产生第二分束。每个二分光电检测器接收入射的第一和第二分束光束及其光接收部分中的一个，并产生用于进行聚焦控制的信号。

4. 发明授权

US5313447A Optical head 失效
标题翻译：光头
公开(公告)号：US5313447A
公开(公告)日：1994-05-17
申请号：US77969
申请日：1993-06-18
申请人： Nobuo Takeshita , Kenjiro Kime , Teruo Fujita , Hiroo Shimegi , Kazuo Okada
发明人： Nobuo Takeshita , Kenjiro Kime , Teruo Fujita , Hiroo Shimegi , Kazuo Okada
IPC分类号： G11B7/135
CPC分类号： G11B7/1359
摘要： An optical head for recording, reproducing or erasing data by emitting a light beam irradiated from a light source onto a recording medium. To reduce the height of the optical head, an optical axis shifting device is disposed between a light beam emitting device and a condensing device for condensing the light beam onto the recording medium. This optical axis shifting device shifts the first optical axis of the light beam from the light beam emitting device to a second optical axis positioned in parallel and spaced apart from each other. As the optical axis shifting device, there is preferable employed a prism having two reflecting faces lying in parallel, and the optical axis, after shifting is to be positioned downwardly of the position of the optical axis before shifting, thereby reducing the height of the optical head.
摘要翻译：用于通过将从光源照射的光束发射到记录介质上来记录，再现或擦除数据的光学头。为了降低光头的高度，光轴移动装置设置在光束发射装置和用于将光束聚集到记录介质上的聚光装置之间。该光轴移动装置将光束的第一光轴从光束发射装置移动到彼此平行且间隔开的第二光轴。作为光轴移动装置，优选使用具有平行的两个反射面的棱镜，移动后的光轴位于移动前的光轴的位置的下方，由此降低光学的高度头。

5. 发明授权

US06108283A Optical head having focus error detection and tracking error detection sensors arranged on substantially the same plane 失效
标题翻译：光头具有布置在基本上相同的平面上的聚焦误差检测和跟踪误差检测传感器
公开(公告)号：US06108283A
公开(公告)日：2000-08-22
申请号：US907060
申请日：1997-08-06
申请人： Teruo Fujita , Morihiro Karaki
发明人： Teruo Fujita , Morihiro Karaki
IPC分类号： G11B7/09 , G11B7/13 , G11B7/135 , G11B7/00
CPC分类号： G11B7/1381 , G11B7/0901 , G11B7/0916 , G11B7/131 , G11B7/1365
摘要： Light reflected from an information recording surface is branched into first and second substantially parallel beams. The first beam is directed to a focus error detection system and the second beam is directed to a tracking error detection system. The photodetector includes light receiving sections for the two detection systems. The light receiving sections include Light receiving surfaces and are housed in a single package. A substantially flat plate is placed either in the focus error detection system or in the tracking error detection system, serving to shorten the optical path so as to create a difference in optical path length to the light receiving surfaces between the two detection systems, thereby enlarging the light spot on the light receiving sections for the tracking error detection system. A cylindrical lens placed in the tracking error detection system serves as astigmatism generating and to make the light spot on the light receiving section in the tracking error detection system to be enlarged in one direction. The light receiving surfaces of one detection system have division lines substantially perpendicular to that of the other detection system. The perpendicular division lines are effective in eliminating an inherent problem encountered in the prior art optical head that adjustment of the tracking error detection system affects the adjustment of the focus error detection system.
摘要翻译：从信息记录表面反射的光被分支成第一和第二基本上平行的光束。第一光束被引导到聚焦误差检测系统，第二光束被引导到跟踪误差检测系统。光检测器包括两个检测系统的光接收部分。光接收部分包括光接收表面并且容纳在单个封装中。将基本上平板放置在聚焦误差检测系统或跟踪误差检测系统中，用于缩短光路以便产生与两个检测系统之间的光接收表面的光程长度的差异，从而扩大用于跟踪误差检测系统的光接收部分上的光斑。放置在跟踪误差检测系统中的柱面透镜用作像散生成，并使跟踪误差检测系统中的光接收部分上的光斑在一个方向上扩大。一个检测系统的光接收表面具有基本上垂直于另一个检测系统的划分线。垂直分割线有效地消除了现有技术的光学头中遇到的固有问题，跟踪误差检测系统的调整影响了聚焦误差检测系统的调整。

6. 发明申请

US20060227335A1 Light wavefront measuring instrument, light wavefront measuring method, and light source adjusting method 失效
标题翻译：光波前测量仪，光波前测量方法和光源调节方法
公开(公告)号：US20060227335A1
公开(公告)日：2006-10-12
申请号：US10548838
申请日：2003-11-17
申请人： Nobuo Takeshita , Teruo Fujita , Toshiya Matozaki , Michihiro Tadokoro
发明人： Nobuo Takeshita , Teruo Fujita , Toshiya Matozaki , Michihiro Tadokoro
IPC分类号： G01B9/02
CPC分类号： G11B7/22 , G01J9/02 , G11B7/1359 , G11B7/1367 , G11B7/1376 , G11B7/1381 , G11B7/1392 , G11B7/13927
摘要： A light wavefront measuring apparatus (2, 2a, 42) includes a separating element (7a, 47a) for separating a flux of light which exits from an optical head (1, 31) into a first beam and a second beam, a first interference fringe display section (21, 21a) for displaying interference fringes formed from the first beam, a Dove prism (13, 53) for rotating a wavefront of the second beam around its optical axis (AX2), and a second interference fringe display section (22, 22a) for displaying interference fringes formed from the second beam which passed through it. In adjustment of the light source device, position of a collimator (5) in the optical head (1, 31) is adjusted in optical axis direction so as to approximate the interference fringe patterns displayed in the interference fringe display sections (21, 22, 21a, 22a) each other.
摘要翻译：光波前测量装置（2,2a，42）包括分离元件（7a，47a），用于将从光头（1,31）射出的光束分离成第一光束和第二光束，用于显示由第一光束形成的干涉条纹的第一干涉条纹显示部分（21,21a），用于使第二光束的波前绕其光轴旋转的道威斯棱镜（13,53） SUB>）和第二干涉条纹显示部分（22,22a），用于显示由穿过它的第二光束形成的干涉条纹。在光源装置的调整中，在光头（1,31）中的准直仪（5）的位置在光轴方向上调整为近似于在干涉条纹显示部（21,22）中显示的干涉条纹图案， 21 a，22 a）彼此。

7. 发明授权

US07554675B2 Light wavefront measuring instrument, light wavefront measuring method, and light source adjusting method 失效
标题翻译：光波前测量仪，光波前测量方法和光源调节方法
公开(公告)号：US07554675B2
公开(公告)日：2009-06-30
申请号：US10548838
申请日：2003-11-17
申请人： Nobuo Takeshita , Teruo Fujita , Toshiya Matozaki , Michihiro Tadokoro
发明人： Nobuo Takeshita , Teruo Fujita , Toshiya Matozaki , Michihiro Tadokoro
IPC分类号： G01B9/02
CPC分类号： G11B7/22 , G01J9/02 , G11B7/1359 , G11B7/1367 , G11B7/1376 , G11B7/1381 , G11B7/1392 , G11B7/13927
摘要： A light wavefront measuring apparatus (2, 2a, 42) includes a separating element (7a, 47a) for separating a flux of light which exits from an optical head (1, 31) into a first beam and a second beam, a first interference fringe display section (21, 21a) for displaying interference fringes formed from the first beam, a Dove prism (13, 53) for rotating a wavefront of the second beam around its optical axis (AX2), and a second interference fringe display section (22, 22a) for displaying interference fringes formed from the second beam which passed through it. In adjustment of the light source device, position of a collimator (5) in the optical head (1, 31) is adjusted in optical axis direction so as to approximate the interference fringe patterns displayed in the interference fringe display sections (21, 22, 21a, 22a) each other.
摘要翻译：光波前测量装置（2,2a，42）包括分离元件（7a，47a），用于将从光头（1,31）射出的光束分离成第一光束和第二光束，第一干涉用于显示由第一光束形成的干涉条纹的边缘显示部分（21,21a），用于旋转围绕其光轴（AX2）的第二光束的波前的Dove棱镜（13,53）和第二干涉条纹显示部分 22,22a），用于显示由通过它的第二光束形成的干涉条纹。在光源装置的调整中，在光头（1,31）中的准直仪（5）的位置在光轴方向上调整为近似于在干涉条纹显示部（21,22）中显示的干涉条纹图案， 21a，22a）。

8. 发明授权

US5864525A Optical disk device 失效
标题翻译：光盘装置
公开(公告)号：US5864525A
公开(公告)日：1999-01-26
申请号：US877822
申请日：1997-06-18
申请人： Nobuo Takeshita , Teruo Fujita
发明人： Nobuo Takeshita , Teruo Fujita
IPC分类号： G11B7/007 , G11B7/09 , G11B7/095 , G11B7/13 , G11B7/135 , G11B7/14 , G11B7/22
CPC分类号： G11B7/133 , G11B7/00718 , G11B7/0908 , G11B7/0916 , G11B7/0933 , G11B7/0935 , G11B7/094 , G11B7/0948 , G11B7/0956 , G11B7/1353 , G11B7/1381 , G11B7/14 , G11B7/22 , G11B7/0909
摘要： In an optical disk device for recording or playing back information on or from an optical information recording medium having land parts forming information tracks and groove parts interposed between adjacent land parts, the land part is illuminated with a first light spot, and the groove part is illuminated a second light spot, a first focus error signal is produced in accordance with the reflected light beam of the first light spot, and a second focus error signal is produced in accordance with the reflected light beam of the second light spot, and focus control is performed in accordance with the first and second focus error signals. In another aspect of the invention, each of the light receiving sections of a photodetector used for receiving the reflected light has an array of tapered projections along in a region between main parts the light receiving sections, and the tapered projections of the light receiving sections are interdigitated with each other. Improved devices for tilting the objective lens is also provided.
摘要翻译：在用于在具有形成信息轨迹的陆地部分和插入在相邻陆部之间的槽部分的光信息记录介质上记录或再现信息的光盘装置中，用第一光点照亮地面部分，并且将槽部分照亮第二光点，根据第一光点的反射光束产生第一聚焦误差信号，并且根据第二光点的反射光产生第二聚焦误差信号，并且聚焦控制根据第一和第二聚焦误差信号进行。在本发明的另一方面，用于接收反射光的光电检测器的每个光接收部分具有沿着光接收部分的主要部分之间的区域中的锥形突起阵列，并且光接收部分的锥形突起是互相指指。还提供了用于倾斜物镜的改进的装置。

9. 发明授权

US5068843A Optical read-write apparatus 失效
标题翻译：光读写装置
公开(公告)号：US5068843A
公开(公告)日：1991-11-26
申请号：US546875
申请日：1990-07-02
申请人： Nobuo Takeshita , Teruo Fujita
发明人： Nobuo Takeshita , Teruo Fujita
IPC分类号： G11B7/09 , G11B7/135 , G11B7/14
CPC分类号： G11B7/1362 , G11B7/0901
摘要： An optical read-write apparatus for reading and writing information in tracks on an optical medium such as an optical disk has two or more beam sources for producing light beams with different wavelengths, and corresponding dichroic mirrors mounted in the path of the beams. Each of the dichroic mirrors reflects light of the wavelength of one of the beams and transmits light of other wavelengths. Piezoelectric transducers are provided for tilting one or more of the dichroic mirrors to adjust the tracking of the beams. An objective lens receives the beams after reflection from the dichroic mirrors and focuses them onto the optical medium.
摘要翻译：用于在诸如光盘的光学介质上的轨道中读取和写入信息的光学读写装置具有两个或更多个用于产生具有不同波长的光束的光束源，以及安装在光束路径中的对应的二向色镜。每个分色镜反射其中一个光束的波长的光并透射其他波长的光。提供压电换能器用于倾斜一个或多个分色镜以调节光束的跟踪。物镜从二向色镜反射后接收光束并将其聚焦到光学介质上。

10. 发明授权

US4718052A Head assembly for optical disc 失效
标题翻译：光盘头组件
公开(公告)号：US4718052A
公开(公告)日：1988-01-05
申请号：US781993
申请日：1985-09-30
申请人： Mitsushige Kondo , Shinsuke Shikama , Keizo Kono , Teruo Fujita
发明人： Mitsushige Kondo , Shinsuke Shikama , Keizo Kono , Teruo Fujita
IPC分类号： G11B7/08 , G11B7/09 , G11B7/095
CPC分类号： G11B7/0901 , G11B7/1245
摘要： An optical head assembly for recording information on an optical disc or for taking out information already recorded, the optical head assembly including a semiconductor substrate and a dielectric light conducting layer formed on the substrate, the light conducting layer being internally formed with optical elements for converging laser beam from a laser beam source onto the optical disc and directing the reflected beam from the optical disc surface toward a photo detector. Output signal from the photo detector is used for reading information and also for allowing the optical head assembly to trace a track on the optical disc.
摘要翻译：一种用于在光盘上记录信息或用于取出已经记录的信息的光学头组件，所述光学头组件包括半导体衬底和形成在衬底上的电介质光导层，所述导光层内部形成有用于会聚的光学元件来自激光束源的激光束到光盘上并且将来自光盘表面的反射光束引向光电检测器。来自光电检测器的输出信号用于读取信息，并且还用于允许光学头组件跟踪光盘上的轨道。

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