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51. 发明授权

US07529043B2 Beam shaping optical device, optical head, and optical information medium drive unit 失效
标题翻译：光束成形光学器件，光学头和光学信息介质驱动单元
公开(公告)号：US07529043B2
公开(公告)日：2009-05-05
申请号：US10542361
申请日：2004-07-06
申请人： Eishin Mori , Keiichi Matsuzaki , Hidenori Wada , Hideki Hayashi
发明人： Eishin Mori , Keiichi Matsuzaki , Hidenori Wada , Hideki Hayashi
IPC分类号： G02B7/02
CPC分类号： G02B7/028 , G02B19/0014 , G02B19/0052 , G11B7/1359 , G11B7/1376 , G11B7/13925 , G11B7/1398 , G11B2007/13727
摘要： A lens surface of a collimating lens closer to a light source is in contact with a retracted surface at one end surface of a barrel. On a projecting surface at an outer side of the one end surface of the barrel, grooves are formed at a plurality of positions symmetric with respect to an optical axis. An adhesive deposited in the grooves is applied to an outer circumferential surface of the collimating lens to fix the collimating lens in the barrel. Since the grooves are formed to be shallower than the retracted surface, the adhesive does not intrude onto the retracted surface. The barrel is pressed against a wall surface formed in an inner circumferential surface of a barrel holder main portion and having a V-shaped cross section by a leaf spring, thereby being held at a specified position in the barrel holder main portion. An amount of change in distance from a reference surface to a held position of the collimating lens per unit temperature is set to conform to a sum of an amount of change in movement of the light source from the reference position per unit temperature and an amount of change of back focus of the collimating lens per unit temperature.
摘要翻译：靠近光源的准直透镜的透镜表面与筒的一个端面处的缩回表面接触。在筒的一端面的外侧的突出面上形成有相对于光轴对称的多个位置的槽。将沉积在凹槽中的粘合剂施加到准直透镜的外周表面，以将准直透镜固定在镜筒中。由于凹槽形成为比缩回表面浅，所以粘合剂不会侵入缩回的表面。筒被压在形成于筒保持器主体部的内周面的壁面上，并且通过片簧具有V形横截面，从而被保持在筒保持器主体部分中的指定位置。将每单位温度的准直透镜的基准面到保持位置的距离的变化量设定为与光单元相对于每单位温度的基准位置的移动量的变化量和每单位温度改变准直透镜的后焦距。

52. 发明授权

US07333405B2 Optical disk device and information recording/reproducing method 有权
标题翻译：光盘装置和信息记录/再现方法
公开(公告)号：US07333405B2
公开(公告)日：2008-02-19
申请号：US11386376
申请日：2006-03-22
申请人： Yoshiaki Komma , Hidenori Wada , Seiji Nishino
发明人： Yoshiaki Komma , Hidenori Wada , Seiji Nishino
IPC分类号： G11B7/00
CPC分类号： G11B7/1369 , G11B7/08511 , G11B7/1378 , G11B7/13925 , G11B7/13927 , G11B2007/0013 , G11B2007/13727
摘要： An optical disk device is provided with an optical pickup that includes a convergent optical system having an objective lens for converging a light beam emitted from the laser light source to form a microspot on an optical disk and an aberration correcting optical system for controlling a spherical aberration of the convergent optical system, and performs information recording or reproduction with respect to a multi-layer optical disk having at least a first recording layer and a second recording layer. In the optical disk device, an operation of changing a correction quantity of the spherical aberration from a value adequate for the first recording layer to a predetermined value is started before an operation of moving a focus position of the microspot from the first layer to the second layer is completed. This allows a focus control to be performed stably with respect to the second recording layer in a state in which the spherical aberration correction already has been carried out, thereby preventing the focus control from failing due to an unsuccessful interlayer jump.
摘要翻译：光盘装置具有光学拾取器，该光学拾取器包括会聚光学系统，该会聚光学系统具有用于会聚从激光光源发射的光束以在光盘上形成微点的物镜，以及用于控制球面像差的像差校正光学系统并且对具有至少第一记录层和第二记录层的多层光盘执行信息记录或再现。在光盘装置中，将微球的聚焦位置从第一层移动到第二层的操作之前开始将球面像差的校正量从适合于第一记录层的值改变到预定值的操作层完成。这允许在已经执行球面像差校正的状态下相对于第二记录层稳定地执行聚焦控制，从而防止聚焦控制由于不成功的层间跳跃而失败。

53. 发明授权

US07330419B2 Optical head device and optical information apparatus using the same 有权
标题翻译：光头装置及其使用的光信息装置
公开(公告)号：US07330419B2
公开(公告)日：2008-02-12
申请号：US11443751
申请日：2006-05-31
申请人： Seiji Nishino , Hidenori Wada , Yoshiaki Komma , Sadao Mizuno , Keiichi Matsuzaki
发明人： Seiji Nishino , Hidenori Wada , Yoshiaki Komma , Sadao Mizuno , Keiichi Matsuzaki
IPC分类号： G11B7/00
CPC分类号： G11B7/1398 , G11B7/1353 , G11B7/1367 , G11B7/1372 , G11B7/1378 , G11B7/13922 , G11B7/13925
摘要： An optical head device includes a focusing optical system for focusing a laser beam emitted from a semiconductor laser light source on an optical information medium with an objective lens. A chromatic aberration correction element for correcting chromatic aberration occurring in the objective lens is provided between the semiconductor laser light source and the optical information medium. A light distribution correction element in which the transmittance increases with the distance from the center of the aperture surface of the objective lens is provided so as to correct a reduction of the intensity of the light incident on the aperture surface of the objective lens with the distance from the center of the aperture surface.
摘要翻译：光头装置包括聚焦光学系统，用于将从半导体激光光源发射的激光束聚焦在具有物镜的光信息介质上。在半导体激光光源和光信息介质之间设置用于校正物镜中出现的色像差的色像差校正元件。提供透光率随着距离物镜的孔径表面的中心的距离而增加的光分布校正元件，以便校正入射到物镜的孔表面上的光的强度的降低，距离从孔表面的中心。

54. 发明授权

US07277366B2 Optical head and optical recording and reproducing apparatus 有权
标题翻译：光头和光记录和再现装置
公开(公告)号：US07277366B2
公开(公告)日：2007-10-02
申请号：US10787100
申请日：2004-02-27
申请人： Hidenori Wada , Keiichi Matsuzaki , Hideki Hayashi
发明人： Hidenori Wada , Keiichi Matsuzaki , Hideki Hayashi
IPC分类号： G11B7/00
CPC分类号： G11B7/13927 , G11B7/0925 , G11B7/0956
摘要： An optical head performs recording and/or reproducing of a signal to an optical recording medium and comprises a light source, an objective lens converging the light emitted from the light source to the optical recording medium, and objective lens tilting mechanism for tilting the objective lens in order to correct aberration generated when the optical recording medium is tilted, and the optical head is assembled so that a direction of the coma aberration of the objective lens itself perpendicularly crosses a direction tilted by the objective lens tilting mechanism.
摘要翻译：光学头执行向光学记录介质的信号的记录和/或再现，并且包括光源，将从光源发射的光会聚到光学记录介质的物镜和用于倾斜物镜的物镜倾斜机构为了校正当光学记录介质倾斜时产生的像差，并且光学头组装成使得物镜本身的彗形像差的方向垂直于由物镜倾斜机构倾斜的方向穿过。

55. 发明申请

US20060233072A1 Optical head 有权
标题翻译：光头
公开(公告)号：US20060233072A1
公开(公告)日：2006-10-19
申请号：US11451779
申请日：2006-06-13
申请人： Teruhiro Shiono , Keiichi Matsuzaki , Hidenori Wada , Seiji Nishino
发明人： Teruhiro Shiono , Keiichi Matsuzaki , Hidenori Wada , Seiji Nishino
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/1353 , G11B7/1367 , G11B7/1369 , G11B7/13922
摘要： An optical head with excellent optical characteristics even when using a light source that substantially has a wavelength broadening is provided. The optical head includes a light source, an objective lens for focusing a light beam emitted from the light source on an information recording medium and a photodetector for detecting the light beam reflected from the information recording medium, wherein defocusing correction means and spherical aberration correction means are provided in an optical path between the light source and the information recording medium. Since both the defocusing correction means and the spherical aberration correction means are provided, while defocusing of a focused spot on the information recording medium caused by a wavelength broadening of the light source and chromatic aberration of the optical system can be corrected, the spherical aberration of the optical system caused by wavelength difference between a design wavelength and an incident wavelength also can be corrected. As a result, excellent optical characteristics can be obtained.
摘要翻译：提供即使在使用基本上具有波长变宽的光源的情况下也具有优异的光学特性的光学头。光头包括光源，用于将从光源发射的光束聚焦在信息记录介质上的物镜和用于检测从信息记录介质反射的光束的光电检测器，其中散焦校正装置和球面像差校正装置设置在光源和信息记录介质之间的光路中。由于设置了散焦校正装置和球面像差校正装置两者，所以可以校正由光源的波长变宽和光学系统的色差引起的信息记录介质上的聚焦点的散焦，也可以校正由设计波长和入射波长之间的波长差引起的光学系统。结果，可以获得优异的光学特性。

56. 发明申请

US20060181985A1 Optical disk device and information recording/reproducing method 有权
公开(公告)号：US20060181985A1
公开(公告)日：2006-08-17
申请号：US11386381
申请日：2006-03-22
申请人： Yoshiaki Komma , Hidenori Wada , Seiji Nishino
发明人： Yoshiaki Komma , Hidenori Wada , Seiji Nishino
IPC分类号： G11B7/00
CPC分类号： G11B7/1369 , G11B7/08511 , G11B7/1378 , G11B7/13925 , G11B7/13927 , G11B2007/0013 , G11B2007/13727
摘要： An optical disk device is provided with an optical pickup that includes a convergent optical system having an objective lens for converging a light beam emitted from the laser light source to form a microspot on an optical disk and an aberration correcting optical system for controlling a spherical aberration of the convergent optical system, and performs information recording or reproduction with respect to a multi-layer optical disk having at least a first recording layer and a second recording layer. In the optical disk device, an operation of changing a correction quantity of the spherical aberration from a value adequate for the first recording layer to a predetermined value is started before an operation of moving a focus position of the microspot from the first layer to the second layer is completed. This allows a focus control to be performed stably with respect to the second recording layer in a state in which the spherical aberration correction already has been carried out, thereby preventing the focus control from failing due to an unsuccessful interlayer jump.

57. 发明授权

US07085203B2 Optical head with defocusing correction and spherical aberration correction 有权
标题翻译：具有散焦校正和球面像差校正的光学头
公开(公告)号：US07085203B2
公开(公告)日：2006-08-01
申请号：US09794434
申请日：2001-02-27
申请人： Teruhiro Shiono , Keiichi Matsuzaki , Hidenori Wada , Seiji Nishino
发明人： Teruhiro Shiono , Keiichi Matsuzaki , Hidenori Wada , Seiji Nishino
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/1353 , G11B7/1367 , G11B7/1369 , G11B7/13922
摘要： An optical head with excellent optical characteristics even when using a light source that substantially has a wavelength broadening is provided. The optical head includes a light source, an objective lens for focusing a light beam emitted from the light source on an information recording medium and a photodetector for detecting the light beam reflected from the information recording medium, wherein defocusing correction means and spherical aberration correction means are provided in an optical path between the light source and the information recording medium. Since both the defocusing correction means and the spherical aberration correction means are provided, while defocusing of a focused spot on the information recording medium caused by a wavelength broadening of the light source and chromatic aberration of the optical system can be corrected, the spherical aberration of the optical system caused by wavelength difference between a design wavelength and an incident wavelength also can be corrected. As a result, excellent optical characteristics can be obtained.
摘要翻译：提供即使在使用基本上具有波长变宽的光源的情况下也具有优异的光学特性的光学头。光头包括光源，用于将从光源发射的光束聚焦在信息记录介质上的物镜和用于检测从信息记录介质反射的光束的光电检测器，其中散焦校正装置和球面像差校正装置设置在光源和信息记录介质之间的光路中。由于提供了散焦校正装置和球面像差校正装置两者，所以可以校正由光源的波长变宽和光学系统的色差引起的信息记录介质上的聚焦点的散焦，也可以校正由设计波长和入射波长之间的波长差引起的光学系统。结果，可以获得优异的光学特性。

58. 发明授权

US07035192B2 Optical pickup, optical information recording/reproducing apparatus using the same, and phase variable wave plate used in the pickup and the apparatus 有权
标题翻译：光拾取器，使用其的光学信息记录/再现装置以及在拾取器和装置中使用的相位可变波片
公开(公告)号：US07035192B2
公开(公告)日：2006-04-25
申请号：US10873931
申请日：2004-06-22
申请人： Yasuo Kitaoka , Ken'ichi Kasazumi , Katsuhiko Kumagawa , Kazuhisa Yamamoto , Hidenori Wada
发明人： Yasuo Kitaoka , Ken'ichi Kasazumi , Katsuhiko Kumagawa , Kazuhisa Yamamoto , Hidenori Wada
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/1275 , G11B7/1362 , G11B7/1367 , G11B7/1369 , G11B2007/0006
摘要： Laser beams respectively emitted from a SHG blue laser unit and a red semiconductor laser unit that have photo detectors respectively are turned into parallel lights by a collimator lens and then coupled by a dielectric multi-layer film mirror so as to be propagated on the same optical axis. The dielectric multi-layer film mirror is configured so as to transmit light with a wavelength of 500 nm or shorter and reflect light with a wavelength of 500 nm or longer for both P wave and S wave. The lights that are transmitted and reflected by the dielectric multi-layer film mirror pass through a polarizing hologram and a phase variable wave plate and are focused on an optical disk by an objective lens. In this manner, a simple configuration can realize a compatibility with many types of optical disks and a stable signal detection even when using a polarizing optical detection system.
摘要翻译：分别从具有光电检测器的SHG蓝色激光单元和红色半导体激光单元分别发射的激光束通过准直透镜转换为平行光，然后通过电介质多层膜镜耦合，以便在相同的光学轴。介电多层膜反射镜被配置为透射波长为500nm或更短的光，并且对于P波和S波都反射波长为500nm或更长的光。由电介质多层膜镜透射和反射的光通过偏振全息图和相位可变波片，并通过物镜聚焦在光盘上。以这种方式，即使使用偏振光学检测系统，简单的配置也可以实现与许多类型的光盘的兼容性和稳定的信号检测。

59. 发明申请

US20050237900A1 Optical element, optical head, optical information recording/reproduction device, computer, video recording device, video reproduction device, server, and car navigation system 有权
标题翻译：光学元件，光学头，光学信息记录/再现装置，计算机，视频记录装置，视频再现装置，服务器和汽车导航系统
公开(公告)号：US20050237900A1
公开(公告)日：2005-10-27
申请号：US10511867
申请日：2003-04-18
申请人： Kousei Sano , Yoshiaki Komma , Hidenori Wada , Akihiro Yasuda
发明人： Kousei Sano , Yoshiaki Komma , Hidenori Wada , Akihiro Yasuda
IPC分类号： G11B7/1353 , G02B5/18 , G02B5/32 , G11B7/00 , G11B7/085 , G11B7/135
CPC分类号： G11B7/1275 , G02B5/32 , G11B7/1353 , G11B2007/0006
摘要： The present invention provides a first light source (21) that emits light of a first wavelength, that at least either records onto or reproduces information from an information recording medium (30), a light source (22) that emits light of a second wavelength that records onto or reproduces information from an information recording medium (33), a light source (23) that emits light of a third wavelength that records onto or reproduces information from an information recording medium (23), focusing means, an optical element (28) that passes light of the first wavelength and diffracts light of the second and third wavelengths, wherein the optical element (28) is an optical element in which grooves are formed in a substrate, wherein the expression: 380 nm≦(n−1)×d≦420 nm is satisfied, where n is a refractive index of the substrate at a wavelength of 400 nm, and d (nm) is a depth per step of the grooves, and wherein the grooves are formed in two steps of depth d and depth 2d.
摘要翻译：本发明提供了一种发射第一波长的光的第一光源（21），其至少从信息记录介质（30）记录信息或从信息记录介质再现信息，发射第二波长的光的光源（22）从信息记录介质（33）记录信息或从信息记录介质（23）记录第三波长的光的光源（23），从信息记录介质（23），聚焦装置，光学元件（ 28），其通过第一波长的光并衍射第二和第三波长的光，其中光学元件（28）是其中在衬底中形成沟槽的光学元件，其中表达式：描述=“在线公式”end =“lead”？> 380 nm <=（n-1）xd <= 420 nm <？in-line-formula description =“In-line Formulas”end =“tail”？ >，其中n是基底在波长处的折射率 400nm，并且d（nm）是凹槽的每个步骤的深度，并且其中凹槽以深度d和深度2d的两个步骤形成。

60. 发明授权

US5440536A Optical disk apparatus for producing information recorded on a recording track 失效
标题翻译：用于产生记录在记录磁道上的信息的光盘装置
公开(公告)号：US5440536A
公开(公告)日：1995-08-08
申请号：US202518
申请日：1994-02-28
申请人： Noboru Ito , Shinichi Tanaka , Hidenori Wada , Sadao Mizuno , Hideki Hayashi
发明人： Noboru Ito , Shinichi Tanaka , Hidenori Wada , Sadao Mizuno , Hideki Hayashi
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/005 , G11B7/09 , G11B7/13
CPC分类号： G11B7/131 , G11B7/0045 , G11B7/0943
摘要： An optical disk apparatus includes a photodetector divided into eight segments which receive the laser beam reflected from the optical disk and produce signals based on the laser beam sport thereon. In this apparatus, these eight segments are combined in several patterns for the recorded information reproduction, the tracking error detection, and the focus error detection, respectively. For the recorded information reproduction, eight segments are used as combined in three segment cells RC1, RC2, and RC3 which extend in a direction parallel to each other such that the segment cell RC1 is in center and is sandwitched by other segment cell RC2 and RC3. The segment cells RC1, RC2, and RC3 are located perpendicular to the recording track of the optical disk and produce three signals C, R, and L indicative of the laser beam intensity of the laser beam spot thereon, respectively. Thus obtained signals C is multiplied by a constant K and then added to the other signals R and L. By selecting suitable value as the constant K, the crosstalk component in the reproduced signal can be reduced.
摘要翻译：光盘装置包括被分成八个部分的光电检测器，其接收从光盘反射的激光束并基于其上的激光束运动产生信号。在这种装置中，这八个段分别以记录信息再现，跟踪误差检测和聚焦误差检测的多种模式组合。对于记录的信息再现，八个段被组合在三个分段单元RC1，RC2和RC3中，它们在彼此平行的方向上延伸，使得分段单元RC1处于中心并被其它分段单元RC2和RC3 。分段单元RC1，RC2和RC3垂直于光盘的记录轨道定位，并分别产生表示激光束点的激光束强度的三个信号C，R和L。这样获得的信号C乘以常数K，然后加到其他信号R和L.通过选择合适的值作为常数K，可以减少再现信号中的串扰分量。

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