专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06477129B2 Optical disc drive 有权
标题翻译：光盘驱动器
公开(公告)号：US06477129B2
公开(公告)日：2002-11-05
申请号：US09794913
申请日：2001-02-28
申请人： Koichi Maruyama , Takeshi Shimano , Shigeru Nakamura , Akira Arimoto , Kazuo Shigematsu
发明人： Koichi Maruyama , Takeshi Shimano , Shigeru Nakamura , Akira Arimoto , Kazuo Shigematsu
IPC分类号： G11B700
CPC分类号： G11B7/1374 , G11B7/0901 , G11B7/0908 , G11B7/0916 , G11B7/12 , G11B7/123 , G11B7/127 , G11B7/131 , G11B7/1353 , G11B7/139 , G11B2007/0006 , G11B2007/13727
摘要： An optical disc drive using either one of a first disc (e.g., DVD) and a second disc (e.g., CD), is provided with a first laser diode that emits a shorter wavelength beam, a second laser diode that emits a longer wavelength beam, an objective lens, and a driving unit that holds and rotates the optical disc. The optical axis of the objective lens is inclined relative to a normal to the optical disc. The first laser diode is located at a first position so that the coma, which is caused when the first laser beam is converged on a data recording surface of the first disc, is minimized, and the second laser diode is located at a second position so that the coma, which is caused when the second laser beam is converged on a data recording surface of the second disc, is minimized.
摘要翻译：使用第一盘（例如DVD）和第二盘（例如CD）中的任一个的光盘驱动器设置有发射较短波长束的第一激光二极管，发射较长波长束的第二激光二极管，物镜，以及保持和旋转光盘的驱动单元。物镜的光轴相对于光盘的法线倾斜。第一激光二极管位于第一位置，使得当第一激光束会聚在第一盘的数据记录表面上时引起的彗差被最小化，并且第二激光二极管位于第二位置当第二激光束会聚在第二盘的数据记录表面上时引起的彗差被最小化。

2. 发明授权

US07106681B1 Optical head arrangements with single substrate lasers 有权
标题翻译：具有单个基板激光器的光头布置
公开(公告)号：US07106681B1
公开(公告)日：2006-09-12
申请号：US09517594
申请日：2000-03-03
申请人： Shigeru Nakamura , Takeshi Shimano , Kazuo Shigematsu
发明人： Shigeru Nakamura , Takeshi Shimano , Kazuo Shigematsu
IPC分类号： G11B7/135 , G11B7/00
CPC分类号： G11B7/1356 , G11B7/0916 , G11B7/0956 , G11B7/123 , G11B7/1275 , G11B7/1362 , G11B7/1392 , G11B7/1398 , G11B2007/0006
摘要： An optical head with a plurality of semi-conductor laser chips for use in reducing inclination or gradient of more than one beam presently falling onto a focusing lens is disclosed. To this end, a double mirror or alternatively beam reshaping means is disposed which has different reflection planes for permitting reflection of a plurality of laser beams incoming from the semiconductor laser chips.
摘要翻译：公开了一种具有多个半导体激光芯片的光学头，用于减小目前落在聚焦透镜上的多于一个的光束的倾斜度或梯度。为此，设置双镜或交替的束重整装置，其具有不同的反射平面，以允许从半导体激光芯片进入的多个激光束的反射。

3. 发明授权

US06785203B2 Optical lens for optical disc drive with aberration suppression for recording/reproducing for a plurality of optical disc types 有权
标题翻译：用于光盘驱动器的光学透镜，用于多个光盘类型的记录/再现的像差抑制
公开(公告)号：US06785203B2
公开(公告)日：2004-08-31
申请号：US09793544
申请日：2001-02-27
申请人： Koichi Maruyama , Takeshi Shimano , Shigeru Nakamura , Akira Arimoto , Kazuo Shigematsu
发明人： Koichi Maruyama , Takeshi Shimano , Shigeru Nakamura , Akira Arimoto , Kazuo Shigematsu
IPC分类号： G11B709
CPC分类号： G11B7/1374 , G11B7/123 , G11B7/1353 , G11B7/13922 , G11B2007/0006
摘要： An objective lens converges a shorter wavelength laser beam on a DVD having a protective layer, which is 0.6 mm thick, and a longer wavelength laser beam on a CD having a protective layer, which is 1.2 mm thick. A common region is defined on the objective lens. The common region provides a numerical aperture appropriate for converging the longer wavelength laser beam on the CD. Coma of the objective lens in the first region is compensated better in a case where the longer wavelength laser beam is converged on the CD than a case where the shorter wavelength laser beam is converged on the DVD.
摘要翻译：物镜将较短波长的激光束会聚在具有0.6mm厚的保护层的DVD上，并且在具有1.2mm厚的保护层的CD上具有较长波长的激光束。在物镜上定义公共区域。公共区域提供适合于将更长波长的激光束会聚在CD上的数值孔径。在较长波长的激光束会聚在CD上的情况下，比较短波长的激光束会聚在DVD上的情况更好地补偿第一区域中的物镜的昏迷。

4. 发明授权

US06791934B2 Objective lens optical system, optical head and optical information reproduction apparatus 失效
标题翻译：物镜光学系统，光头和光信息再生装置
公开(公告)号：US06791934B2
公开(公告)日：2004-09-14
申请号：US10076663
申请日：2002-02-19
申请人： Takeshi Shimano , Tetsuo Ariyoshi , Kazuo Shigematsu , Koichi Maruyama , Shuichi Takeuchi
发明人： Takeshi Shimano , Tetsuo Ariyoshi , Kazuo Shigematsu , Koichi Maruyama , Shuichi Takeuchi
IPC分类号： G11B700
CPC分类号： G11B7/1378 , G11B7/093 , G11B7/0935 , G11B7/0943 , G11B7/13927
摘要： When it is intended to realize a lens having a large NA with one lens, an adjustment precision between both surfaces of the lens is very strict. Accordingly an objective lens having an NA of 0.8 or more was usually realized by two lenses. However, a working distance is small, and collision of the objective lens with a disc is apt to occur. A coma corrector for compensating coma caused by decentering of both surfaces in realizing the high NA lens with one lens is added. However, in this case, astigmatism occurs when the objective lens decenters from the coma corrector relatively accompanied with a tracking operation. The objective lens and the coma corrector are fixed to a mirror barrel so as to be unified with each other, and driven by a two-dimensional lens actuator. With such a constitution, decentering of the objective lens and the coma corrector does not occur, and hence astigmatism does not occur.
摘要翻译：当想要实现具有一个透镜的具有大NA的透镜时，透镜的两个表面之间的调节精度非常严格。因此，通常通过两个透镜实现NA为0.8以上的物镜。然而，工作距离小，容易发生物镜与盘的碰撞。添加了一个用于补偿由两个表面偏心造成的实现具有一个透镜的高NA透镜的昏迷校正器。然而，在这种情况下，当物镜相对于跟踪操作相对于昏迷校正器偏离时，发生散光。物镜和彗差校正器被固定到镜筒上，以便彼此一体化，并由二维透镜致动器驱动。通过这样的结构，不会发生物镜和昏迷校正器的偏心，因此不发生散光。

5. 发明申请

US20050122880A1 Optical head with lasers and mirrors in a recess formed in a substrate 失效
标题翻译：具有在衬底中形成的凹部中的激光器和反射镜的光学头
公开(公告)号：US20050122880A1
公开(公告)日：2005-06-09
申请号：US11028325
申请日：2005-01-04
申请人： Kimio Tatsuno , Masahide Tokuda , Hirohisa Sano , Toshiaki Tanaka , Takeshi Shimano , Shigeru Nakamura , Takeshi Maeda , Akira Arimoto
发明人： Kimio Tatsuno , Masahide Tokuda , Hirohisa Sano , Toshiaki Tanaka , Takeshi Shimano , Shigeru Nakamura , Takeshi Maeda , Akira Arimoto
IPC分类号： G11B7/00 , G11B7/12 , G11B7/125 , G11B7/22 , G11B21/00 , H01S3/00 , H01S5/022 , H01S5/0683 , H01S5/40 , G11B3/00 , H01S5/00
CPC分类号： G11B7/22 , G11B7/123 , G11B7/1275 , G11B2007/0006 , H01S5/02216 , H01S5/02244 , H01S5/02252 , H01S5/02292 , H01S5/02296 , H01S5/0683 , H01S5/4087
摘要： An integrated optical head records and reproduces information to and from optical discs of different types, including CD and DVD, with use of a single information recording/reproducing apparatus. The optical head has a plurality of semiconductor lasers of different wavelengths integrated by index alignment onto a substrate formed with an optoelectric integrated circuit, photodetection patterns, and a reflecting mirror.
摘要翻译：集成光学头使用单个信息记录/再现装置将信息记录到不同类型的光盘（包括CD和DVD）上并从其中再现信息。该光头具有多个不同波长的半导体激光器，其通过索引对准而集成到形成有光电集成电路，光电检测图案和反射镜的基板上。

6. 发明授权

US07292519B2 Optical head with lasers and mirrors in a recess formed in a substrate 失效
标题翻译：具有在衬底中形成的凹部中的激光器和反射镜的光学头
公开(公告)号：US07292519B2
公开(公告)日：2007-11-06
申请号：US11028325
申请日：2005-01-04
申请人： Kimio Tatsuno , Masahide Tokuda , Hirohisa Sano , Toshiaki Tanaka , Takeshi Shimano , Shigeru Nakamura , Takeshi Maeda , Akira Arimoto
发明人： Kimio Tatsuno , Masahide Tokuda , Hirohisa Sano , Toshiaki Tanaka , Takeshi Shimano , Shigeru Nakamura , Takeshi Maeda , Akira Arimoto
IPC分类号： G11B7/00
CPC分类号： G11B7/22 , G11B7/123 , G11B7/1275 , G11B2007/0006 , H01S5/02216 , H01S5/02244 , H01S5/02252 , H01S5/02292 , H01S5/02296 , H01S5/0683 , H01S5/4087
摘要： An integrated optical head records and reproduces information to and from optical discs of different types, including CD and DVD, with use of a single information recording/reproducing apparatus. The optical head has a plurality of semiconductor lasers of different wavelengths integrated by index alignment onto a substrate formed with an optoelectric integrated circuit, photodetection patterns, and a reflecting mirror.
摘要翻译：集成光学头使用单个信息记录/再现装置将信息记录到不同类型的光盘（包括CD和DVD）上并从其中再现信息。该光头具有多个不同波长的半导体激光器，其通过索引对准而集成到形成有光电集成电路，光电检测图案和反射镜的基板上。

7. 发明授权

US06721242B2 Optical detector having three light receiving areas 有权
标题翻译：具有三个光接收区域的光学检测器
公开(公告)号：US06721242B2
公开(公告)日：2004-04-13
申请号：US10142896
申请日：2002-05-13
申请人： Kunikazu Ohnishi , Takeshi Shimano , Shigeru Nakamura , Masayuki Inoue , Yukio Fukui , Yasuyuki Sugi , Shinji Fujita , Mitsuhiko Ota
发明人： Kunikazu Ohnishi , Takeshi Shimano , Shigeru Nakamura , Masayuki Inoue , Yukio Fukui , Yasuyuki Sugi , Shinji Fujita , Mitsuhiko Ota
IPC分类号： G11B7095
CPC分类号： G11B7/131 , G11B7/00718 , G11B7/0901 , G11B7/0903 , G11B7/0909 , G11B7/094 , G11B7/0943
摘要： An optical detector for detecting at least three optical beams reflected by an optical information recording medium and outputting an electric signal, the optical detector having three light receiving areas each of which receives a respective one of the three optical beams and each of which has four light receiving surfaces, twelve signal lines to transmit an electric signal obtained on respective ones of the four light receiving surfaces of the three light receiving areas, selected ones of the twelve signal lines connected to the four light receiving surfaces of different ones of the three light receiving areas being joined together within the optical detector, and less than nine signal output lines formed by joining the selected ones of the twelve signal lines extend from the optical detector to a signal processing circuit.
摘要翻译：一种用于检测由光学信息记录介质反射并输出电信号的至少三个光束的光学检测器，该光学检测器具有三个光接收区域，每个光接收区域接收三个光束中的相应一个，并且每个光接收区域具有四个光接收表面，用于传输在三个光接收区域的四个光接收表面中的相应一个上获得的电信号的十二条信号线，连接到三个光接收区中的不同光接收表面的四个光接收表面的十二个信号线中的选定的一个区域在光学检测器内连接在一起，并且通过连接十二条信号线中所选择的信号线形成的少于九条信号输出线从光学检测器延伸到信号处理电路。

8. 发明授权

US06272097B1 Optical head and apparatus for recording and reproducing optical information through the use of the optical head 失效
标题翻译：用于通过使用光学头来记录和再现光学信息的光学头和设备
公开(公告)号：US06272097B1
公开(公告)日：2001-08-07
申请号：US09313211
申请日：1999-05-18
申请人： Takeshi Nakao , Shigeru Nakamura , Toshiaki Tanaka , Takeshi Shimano
发明人： Takeshi Nakao , Shigeru Nakamura , Toshiaki Tanaka , Takeshi Shimano
IPC分类号： G11B725
CPC分类号： G11B7/1365 , G11B7/122 , G11B7/124 , G11B7/1372 , G11B7/22 , G11B11/1058
摘要： A minute optical head is provided so that a light source and one or more photo detector elements are integrated on the same substrate by a simple manufacturing process and may be applied to an apparatus for recording and reproducing recordable optical information. An apparatus for recording and reproducing optical information is arranged to have a minute optical head. A light waveguide layer composed of column semiconductor crystal is formed on a monocrystalline transparent substrate and an active layer is formed on the side of the light waveguide layer. The light beam source is a semiconductor having a vertical resonator formed of a high-reflection film before and after an emitting surface of the active layer so that a light beam is vertically radiated to the substrate. The photo detector element is integrated on the closer portion of the substrate to the light beam source of the semiconductor laser. Further, on the opposed surface of the substrate to the light beam source are sequentially integrated a first transparent layer, a diffraction grating, a second transparent layer, a phase difference generating element, a third transparent layer, a light beam focusing element, a fourth transparent layer, and a slide-resisting protective layer. The slide-resisting protective layer is located closer to and as opposed to the information recording medium.
摘要翻译：提供一个微小的光学头，使得光源和一个或多个光电检测器元件通过简单的制造工艺集成在同一基板上，并且可以应用于用于记录和再现可记录光学信息的装置。用于记录和再现光学信息的设备被布置成具有微小的光学头。在单晶透明基板上形成由柱半导体晶体构成的光波导层，在光波导层一侧形成有源层。光束源是在有源层的发射表面之前和之后具有由高反射膜形成的垂直谐振器的半导体，使得光束垂直辐射到衬底。光检测器元件集成在基板的更靠近部分上的半导体激光器的光束源上。此外，在与光束源的基板相对的表面上依次地集成有第一透明层，衍射光栅，第二透明层，相位差产生元件，第三透明层，光束聚焦元件，第四透明层透明层和耐滑动保护层。防滑保护层位于信息记录介质的更靠近和相对的位置。

9. 发明授权

US06728173B2 Information reproducing method which reproduces plural components of a focus error signal and a tracking error signal from plural detection regions of plural reflected light beams 失效
标题翻译：信息再现方法，其从多个反射光束的多个检测区域再现聚焦误差信号的多个分量和跟踪误差信号
公开(公告)号：US06728173B2
公开(公告)日：2004-04-27
申请号：US10131225
申请日：2002-04-25
申请人： Takeshi Shimano , Shigeru Nakamura , Kunikazu Ohnishi , Masayuki Inoue , Yukio Fukui
发明人： Takeshi Shimano , Shigeru Nakamura , Kunikazu Ohnishi , Masayuki Inoue , Yukio Fukui
IPC分类号： G11B700
CPC分类号： G11B7/1353 , G11B7/00718 , G11B7/0903 , G11B7/0909 , G11B7/094 , G11B7/0941 , G11B7/0943 , G11B7/131 , G11B7/1367 , G11B7/1381 , G11B2007/0006
摘要： An information reproducing method for reproducing information recorded on a medium by irradiating a laser beam and detecting a reflected light beam from the medium. The method includes detecting a plurality of reflected light beams in which the polarities of variations in reflected light beam intensity distributions are substantially inverted to each other, the distribution variation being produced when a light spot of the laser beam crosses a track on the medium, generating components of a focus error signal and components of a tracking error signal, adding the components of the focus error signal of the plurality of reflected light beams to generate a focus error signal, and taking a difference between the components of the tracking error signal of the plurality of reflected light beams to generate a tracking error signal.
摘要翻译：一种信息再现方法，用于通过照射激光束和从介质检测反射光来再现记录在介质上的信息。该方法包括检测多个反射光束，其中反射光束强度分布的变化的极性基本上彼此反转，当激光束的光斑穿过介质上的光道时产生分布变化，产生聚焦误差信号的分量和跟踪误差信号的分量，将多个反射光束的聚焦误差信号的分量相加以产生聚焦误差信号，并且获取光信号的跟踪误差信号的分量多个反射光束产生跟踪误差信号。

10. 发明授权

US06507009B1 Optical detector, signal processing circuit and optical information reproduction apparatus thereof 有权
标题翻译：光检测器，信号处理电路及其光信息再生装置
公开(公告)号：US06507009B1
公开(公告)日：2003-01-14
申请号：US09347530
申请日：1999-07-06
申请人： Kunikazu Ohnishi , Takeshi Shimano , Shigeru Nakamura , Masayuki Inoue , Yukio Fukui , Yasuyuki Sugi , Shinji Fujita , Mitsuhiko Ota
发明人： Kunikazu Ohnishi , Takeshi Shimano , Shigeru Nakamura , Masayuki Inoue , Yukio Fukui , Yasuyuki Sugi , Shinji Fujita , Mitsuhiko Ota
IPC分类号： G02B704
CPC分类号： G11B7/131 , G11B7/00718 , G11B7/0901 , G11B7/0903 , G11B7/0909 , G11B7/094 , G11B7/0943
摘要： It is desirable to greatly reduce the disturbance that arises in a focusing error signal by a astigmatic detection method and offset that arises in the tracking error signal by a push-pull method when reproducing various information storing disks, such as a DVD-RAM disk. It is also desirable to provide an optical disk apparatus which is able to reproduce a variety of high density optical disks, such as DVD-RAM and DVD-ROM disks, as well as conventional disks, such as CD, CD-ROM, CD-R disks, by using a simple optional head. For this purpose, an optical disk apparatus irradiates three optical beams produced by a diffraction grating on the specified position of an optical disk and detects reflected light using a specified optical detector divided into twelve parts.
摘要翻译：期望通过散像检测方法和再现各种信息存储盘（例如DVD-RAM盘）时通过推挽方法在跟踪误差信号中产生的偏移来大大降低在聚焦误差信号中产生的干扰。还希望提供能够再现诸如DVD-RAM和DVD-ROM盘的各种高密度光盘以及诸如CD，CD-ROM，CD-ROM等常规盘的光盘装置， R盘，通过使用简单的可选头。为此，光盘装置将由衍射光栅产生的三个光束照射在光盘的指定位置上，并使用分为十二部分的特定光学检测器检测反射光。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式