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1. 发明授权

US5978346A Optical head 失效
标题翻译：光头
公开(公告)号：US5978346A
公开(公告)日：1999-11-02
申请号：US16527
申请日：1998-01-30
申请人： Sadao Mizuno , Tsuguhiro Korenaga , Shinji Uchida
发明人： Sadao Mizuno , Tsuguhiro Korenaga , Shinji Uchida
IPC分类号： G11B7/00 , G11B7/135 , G11B7/12
CPC分类号： G11B7/1395 , G11B7/1353 , G11B7/1356 , G11B7/1365 , G11B7/1374 , G11B7/1381 , G11B2007/0006 , G11B2007/13727
摘要： An optical head has a light source; luminous flux splitting means for splitting radiation luminous flux of linearly polarized light radiated from the light source into plural luminous fluxes without changing the luminous flux diameter substantially; a wavelength plate for polarizing at least one of the luminous fluxes split by the luminous flux splitting means into a nearly circularly polarized light as illumination luminous flux; an objective lens for converging the illumination luminous flux through the wavelength plate on an optical information medium and collecting the reflected light; and a photodetector for receiving the reflected luminous flux collected by the objective lens after passing through the wavelength plate and the luminous flux splitting means. The quantity of received light for maintaining the S/N ratio is sufficient for reproducing a high density optical disk and a conventional optical disk with a large birefringence.
摘要翻译：光头具有光源; 光束分离装置，用于将从光源辐射的线偏振光的辐射光束分散成多个光束而不改变光通量; 波长板，用于将由光束分离装置分割的光束中的至少一个偏振成近似圆偏振光作为照明光束; 用于将通过波长板的照明光束会聚在光信息介质上并收集反射光的物镜; 以及光电检测器，用于接收通过波长板和光通量分离装置之后由物镜收集的反射光通量。用于保持S / N比的接收光量足以再现高密度光盘和具有大双折射率的传统光盘。

2. 发明授权

US5790503A Optical head 失效
标题翻译：光头
公开(公告)号：US5790503A
公开(公告)日：1998-08-04
申请号：US755405
申请日：1996-11-22
申请人： Sadao Mizuno , Tsuguhiro Korenaga , Shinji Uchida
发明人： Sadao Mizuno , Tsuguhiro Korenaga , Shinji Uchida
IPC分类号： G11B7/00 , G11B7/135
CPC分类号： G11B7/1395 , G11B7/1353 , G11B7/1356 , G11B7/1365 , G11B7/1374 , G11B7/1381 , G11B2007/0006 , G11B2007/13727
摘要： An optical head has a light source, luminous flux splitting means for splitting radiation luminous flux of linearly polarized light radiated from the light source into plural luminous fluxes, a wavelength plate for polarizing at least one of the luminous fluxes split by the luminous flux splitting means into a nearly circularly polarized light as illumination luminous flux, an objective lens for converging the illumination luminous flux on an optical information medium and collecting the reflected light, and a photo detector for receiving the reflected luminous flux, after passing through the wavelength plate and the luminous flux splitting means, wherein supposing a power efficiency when splitting the illumination luminous flux from the radiation luminous flux to be E1, a power efficiency when transmitting a polarized light component of the reflected luminous flux, the component being orthogonal to a direction of polarization of the illumination luminous flux, to the photo detector to be E2, and a power efficiency when transmitting a polarized light component of the reflected luminous flux, the component having substantially same direction as a direction of polarization of the illumination luminous flux, to the photo detector to be E3, the E2 is larger than the E1 and the E1.times.E3 is such amount that can be detected by the photo detector.
摘要翻译：光头具有光源，用于将从光源辐射的线偏振光的辐射光束分解成多个光束的光束分离装置，用于偏振由光束分离装置分割的至少一个光束的波长板成为近似圆偏振光作为照明光束，用于将照明光束会聚在光信息介质上并收集反射光的物镜，以及用于接收反射光束的光检测器，在经过波长板和光束分离装置，其中当将从所述辐射光通量分离所述照明光束时的功率效率设定为E1时，将所述反射光束的偏振光分量透射时的功率效率，所述偏振光分量正交于偏振方向照明光通量，到光电检测器为E2，当将具有与照明光束的偏振方向大致相同的方向的反射光束的偏振光分量发送到光电检测器时的功率效率为E2，E2大于 E1和E1xE3是可以由光电检测器检测到的量。

3. 发明授权

US4991919A Optical head apparatus including concentric, periodic grating in a waveguide 失效
标题翻译：光头设备包括波导中的同心圆周期光栅
公开(公告)号：US4991919A
公开(公告)日：1991-02-12
申请号：US415224
申请日：1989-10-18
申请人： Seiji Nishiwaki , Yoshinao Taketomi , Shinji Uchida , Takaaki Tomita , Taketoshi Yonezawa , Sadao Mizuno
发明人： Seiji Nishiwaki , Yoshinao Taketomi , Shinji Uchida , Takaaki Tomita , Taketoshi Yonezawa , Sadao Mizuno
IPC分类号： C09B23/00 , C09B23/02 , C09B23/10 , C09B23/14 , C09B29/00 , C09B67/46 , G03C1/825 , G03C1/83 , G03C5/16 , G11B7/09 , G11B7/12 , G11B7/13 , G11B7/135
CPC分类号： G03C5/16 , G03C1/832 , G11B7/0901 , G11B7/0917 , G11B7/124 , G11B7/13 , G11B7/1384 , G03C2001/7448 , G03C2200/44 , G03C2200/46
摘要： This invention provides an optical head apparatus in which a grating coupler (8), which is formed on a circular region which has a center on an axis (18) and has a periodical structure with dents and projections in a configuration of concentric circles or spirals around the axis (18), input-couples laser light (7) emitted from a semiconductor laser (5) and turns it into waveguided light (16B) which transmits in a waveguiding layer (15B). The waveguided light (16B) is converted, in a region where the waveguiding layer (15B) and a waveguiding layer (15A) overlap each other, to waveguided light (16A) which transmits in the waveguiding layer (15A). By a grating coupler (9), formed on a ring-shaped area which is located around the axis (18), which has a periodic structure with dents and projections of a configuration of concentric circles or spirals around the axis (18), the waveguided light (16A) is radiated and focused onto points (FA), (FB) and (FC) which are located on the axis (18). Light reflected from a reflecting surface (19) is input-coupled by the grating coupler (9) and is converted to waveguided light (21) which transmits through the waveguiding layer (15A) toward the center. The waveguided light (21) is radiated at the innermost edge of the waveguiding layer (15A) and the amount of radiated light is detected by a light detector (10) to obtained control signal and playback signals.
摘要翻译： PCT No.PCT / JP88 / 01344 Sec。 371日期：1989年10月18日 102（e）日期1989年10月18日PCT提交1988年12月28日PCT公布。出版物WO89 / 06424 日期：1989年7月13日。本发明提供了一种光学头装置，其中形成在圆形区域上的光栅耦合器（8），该圆形区域具有在轴线（18）上的中心并且具有凹陷和突起的周期结构围绕轴线（18）的同心圆或螺旋的构造，从半导体激光器（5）发射的输入耦合激光（7），并将其转换成在波导层（15B）中透射的波导光（16B）。波导层（16B）在波导层（15B）和波导层（15A）彼此重叠的区域中被转换成在波导层（15A）中透射的波导光（16A）。通过形成在围绕轴线（18）的环形区域上的光栅耦合器（9），该环形区域具有围绕轴线（18）的同心圆或螺旋构型的凹陷和突起的周期性结构，波导光（16A）被辐射并聚焦到位于轴线（18）上的点（FA），（FB）和（FC）上。从反射面（19）反射的光被光栅耦合器（9）输入耦合，并被转换成通过波导层（15A）向中心透射的波导光（21）。波导光（21）被辐射在波导层（15A）的最内边缘，并且由光检测器（10）检测辐射光量，以获得控制信号和重放信号。

4. 发明授权

US08483034B2 Optical pickup, inclination angle detection method, optical information device and information processing device 有权
标题翻译：光学拾取，倾斜角检测方法，光学信息装置和信息处理装置
公开(公告)号：US08483034B2
公开(公告)日：2013-07-09
申请号：US13702882
申请日：2011-11-09
申请人： Hidenori Wada , Kousei Sano , Keiichi Matsuzaki , Sadao Mizuno
发明人： Hidenori Wada , Kousei Sano , Keiichi Matsuzaki , Sadao Mizuno
IPC分类号： G11B7/00
CPC分类号： G11B7/13 , G11B7/0956 , G11B7/131 , G11B7/1353 , G11B7/1365 , G11B7/1387 , G11B2007/0013
摘要： An optical pickup, an inclination angle detection method, an optical information device, and an information processing device capable of reliably and accurately detecting a relative inclination angle between an end face of a solid immersion lens and a surface of an optical recording medium are provided. A convergence position modifying unit modifies convergence states of a first beam and a second beam according to layers of an optical recording medium, a first optical detector includes a first light receiving section which receives the converged first beam and a second light receiving section which receives the converged second beam, and the first optical detector detects a relative inclination angle between an end face of a solid immersion lens and a surface of the optical recording medium based on a difference in quantities of received light between the first light receiving section and the second light receiving section.
摘要翻译：提供能够可靠且准确地检测固体浸没透镜的端面与光记录介质的表面之间的相对倾斜角度的光学拾取器，倾斜角度检测方法，光学信息装置和信息处理装置。会聚位置修改单元根据光记录介质的层来修改第一光束和第二光束的会聚状态，第一光检测器包括接收会聚的第一光束的第一光接收部分和接收第一光接收部分的第二光接收部分，会聚第二光束，并且第一光学检测器基于第一光接收部分和第二光线之间的接收光量的差异来检测固体浸没透镜的端面与光记录介质的表面之间的相对倾斜角度接收部分。

5. 再颁专利

USRE43126E1 Optical pickup head and information recording/reproducing device 有权
标题翻译：光拾取头和信息记录/再现装置
公开(公告)号：USRE43126E1
公开(公告)日：2012-01-24
申请号：US11529689
申请日：2006-09-28
申请人： Hideki Hayashi , Sadao Mizuno , Daisuke Ogata , Shin-ichi Kadowaki , Kousei Sano , Jouji Anzai , Akihiro Yasuda
发明人： Hideki Hayashi , Sadao Mizuno , Daisuke Ogata , Shin-ichi Kadowaki , Kousei Sano , Jouji Anzai , Akihiro Yasuda
IPC分类号： G11G7/00
CPC分类号： G11B7/131 , G11B7/0903 , G11B7/1353 , G11B7/13927 , G11B2007/0013
摘要： An optical pickup head is provided with a light source, a diffracting means for creating a plurality of diffracted beams, a converging means for focusing the diffracted beams onto an optical storage medium, a beam branching means for branching the plurality of beams reflected by the optical storage medium, and an optical detecting means for outputting a signal corresponding to the amount of light of the received beams. The optical detecting means has main beam light receiving portions and sub-beam light receiving portions. The amount of light of the first or higher order diffracted beams when they are substantially focused on and reflected by a focus plane of the plurality of information recording planes is equal to or greater than the amount of light of the zero order diffracted beam when it is reflected without focusing by a non-focus plane other then the focus plane of the plurality of information recording planes. The invention provides an optical pickup head where offset is not generated in the TE signals even during tracking with the objective lens when a two-layered disk is used.
摘要翻译：光拾取头设置有光源，用于产生多个衍射光束的衍射装置，用于将衍射光束聚焦到光存储介质上的会聚装置，用于将由光学器件反射的多个光束分支的光束分支装置存储介质，以及光检测装置，用于输出对应于接收光束的光量的信号。光检测装置具有主光束光接收部分和副光束光接收部分。当它们基本上聚焦在多个信息记录面的聚焦平面上并被其反射时，第一或更高阶衍射光束的光量等于或大于零级衍射光束的光量反射而不聚焦在多个信息记录平面的焦点平面之外的非聚焦平面。本发明提供了一种光拾取头，即使在使用双层盘的情况下在物镜进行跟踪期间，也不会在TE信号中产生偏移。

6. 发明申请

US20100220578A1 OBJECTIVE LENS, OPTICAL HEAD AND OPTICAL DISC DEVICE 失效
标题翻译：目标镜头，光头和光盘设备
公开(公告)号：US20100220578A1
公开(公告)日：2010-09-02
申请号：US12159425
申请日：2006-12-27
申请人： Fumitomo Yamasaki , Katsuhiko Hayashi , Sadao Mizuno , Hideki Aikoh
发明人： Fumitomo Yamasaki , Katsuhiko Hayashi , Sadao Mizuno , Hideki Aikoh
IPC分类号： G11B7/135 , G02B11/02 , G02B13/18
CPC分类号： G02B9/10 , G02B3/08 , G02B13/18 , G11B7/1275 , G11B7/1374 , G11B7/13922 , G11B2007/0006
摘要： Provides an objective lens, an optical head and an optical disc apparatus (drive) capable of compensating for various types of aberrations including wavelength changes for a plurality of types of optical discs including high density optical discs, DVDs and CDs with a good wavelength dispersion compensation ability and thus capable of providing good recording or reproduction characteristics.The objective lens according to the present invention includes a first lens and a second lens substantially in close contact with each other such that optical axes thereof match each other, and acts as a convex lens as a whole. Each lens includes a central portion including the optical axis and a peripheral portion located in a periphery of the central portion. The central portion of the first lens acts as a convex lens; and the central portion of the second lens acts as a concave lens. Where the refractive index of the first lens at d line (wavelength: 587.56 nm) is nd1, the Abbe constant of the first lens represented using the refractive indices at d line, F line (wavelength: 486.13 nm) and C line (wavelength: 656.27 nm) is νd1, the refractive index of the second lens at d line is nd2, and the Abbe constant of the second lens represented using the refractive indices at d line, F line and C line is νd2, the objective lens fulfills nd1>nd2 and νd1>νd2.
摘要翻译：提供能够补偿包括具有良好的波长色散补偿的高密度光盘，DVD和CD的多种类型的光盘的波长变化的各种像差的物镜，光头和光盘装置（驱动器）因此能够提供良好的记录或再现特性。根据本发明的物镜包括基本上彼此紧密接触的第一透镜和第二透镜，使得其光轴彼此匹配，并且作为整体起凸透镜的作用。每个透镜包括包括光轴的中心部分和位于中心部分的周边的周边部分。第一透镜的中心部分用作凸透镜; 并且第二透镜的中心部分用作凹透镜。在d线（波长：587.56nm）处的第一透镜的折射率为nd1的情况下，使用在d线，F线（波长：486.13nm）和C线（波长：48nm）处的折射率表示的第一透镜的阿贝常数 656.27nm）是d1，d线的第二透镜的折射率为nd2，使用d线，F线和C线的折射率表示的第二透镜的阿贝常数为d2，目标镜头满足nd1> nd2和＆ngr; d1>＆ngr; d2。

7. 发明授权

US07760612B2 Optical element and optical head device using it, and optical information device using this optical head device, and computer, optical disk player, car navigation system, optical disk recorder and optical disk server using this optical information device 有权
标题翻译：使用它的光学元件和光学头装置，以及使用该光学头装置的光学信息装置，以及使用该光学信息装置的计算机，光盘播放器，汽车导航系统，光盘记录器和光盘服务器
公开(公告)号：US07760612B2
公开(公告)日：2010-07-20
申请号：US10504373
申请日：2003-01-30
申请人： Yoshiaki Komma , Sadao Mizuno , Kousei Sano
发明人： Yoshiaki Komma , Sadao Mizuno , Kousei Sano
IPC分类号： G11B7/00
CPC分类号： G11B7/1356 , G11B7/1275 , G11B7/1362 , G11B7/1365 , G11B7/1374 , G11B7/1378 , G11B7/1392 , G11B7/1395 , G11B2007/0006
摘要： Providing an objective lens with a large numerical aperture (NA), the present invention records or plays conventional optical disks such as CDs and DVDs using an optical head capable of recording or reproducing high-density optical disks. An optical element (8) is provided between a first and second laser light source and an objective lens (18) for the purpose of converting a wave front of a second optical beam 32. Furthermore, the optical element (8) and the objective lens (18) are fixed to move as a single piece.
摘要翻译：提供具有大数值孔径（NA）的物镜，本发明使用能够记录或再现高密度光盘的光学头记录或播放诸如CD和DVD的常规光盘。为了转换第二光束32的波前，光学元件（8）设置在第一和第二激光源与物镜（18）之间。此外，光学元件（8）和物镜（18）固定成单件移动。

8. 发明授权

US07486606B2 Optical head and optical information apparatus for recording or reproducing information on an information recording medium 有权
标题翻译：用于在信息记录介质上记录或再现信息的光头和光信息装置
公开(公告)号：US07486606B2
公开(公告)日：2009-02-03
申请号：US11151272
申请日：2005-06-14
申请人： Kousei Sano , Yoshiaki Komma , Sadao Mizuno
发明人： Kousei Sano , Yoshiaki Komma , Sadao Mizuno
IPC分类号： G11B7/00
CPC分类号： G11B7/1353
摘要： An optical head which is capable of realizing a stable tracking control, even if the rotational center of an information recording medium is not located on the extension line of the transfer directions of a light-concentrating element, includes: a semiconductor laser which emits a beam of light; an objective lens which concentrates the beam of light on an optical disk; a transfer mechanism which transfers the objective lens between the outermost circumference and the innermost circumference of the recording area of the optical disk along the optical disk; and a photo-detector which detects a beam of light that returns from the optical disk. The photo-detector includes a plurality of areas which are divided by a division line. The division line is set parallel to the tangential directions of the track in a predetermined position on the transfer line of the objective lens between the outermost circumference and the innermost circumference of the recording area, and the plurality of areas are divided, by a lateral division line which intersects the division line, into a first area on which a beam of light that mainly includes a tracking component is incident and a second area on which a beam of light that does not include the tracking component is incident.
摘要翻译：即使信息记录介质的旋转中心不位于聚光元件的传送方向的延长线上，也能够实现稳定的跟踪控制的光学头包括：发射光束的半导体激光器的光将光束聚集在光盘上的物镜; 传送机构，其沿着光盘在光盘的记录区域的最外圆周和最内圆周之间传送物镜; 以及光检测器，其检测从光盘返回的光束。光检测器包括由划分线划分的多个区域。分割线与记录区域的最外圆周和最内圆周之间的物镜的传送线上的预定位置处的轨道的切线方向平行设置，并且通过横向划分来划分多个区域与分割线相交的第一区域进入主要包括跟踪分量的光束入射的第一区域和不包括跟踪组件的光束入射的第二区域。

9. 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。

10. 发明申请

US20050117497A1 Optical element and optical head device using it and optical information device using this optical head device, and computer, optical disk player car navigation system, optical disk recorder and optical disk server using this optical information device 有权
标题翻译：使用它的光学元件和光学头装置和使用该光学头装置的光学信息装置，以及使用该光学信息装置的计算机，光盘播放器汽车导航系统，光盘记录器和光盘服务器
公开(公告)号：US20050117497A1
公开(公告)日：2005-06-02
申请号：US10504373
申请日：2003-01-30
申请人： Yoshiaki Komma , Sadao Mizuno , Kousei Sano
发明人： Yoshiaki Komma , Sadao Mizuno , Kousei Sano
IPC分类号： G11B7/00 , G11B7/125
CPC分类号： G11B7/1356 , G11B7/1275 , G11B7/1362 , G11B7/1365 , G11B7/1374 , G11B7/1378 , G11B7/1392 , G11B7/1395 , G11B2007/0006
摘要： Providing an objective lens with a large numerical aperture (NA), the present invention records or plays conventional optical disks such as CDs and DVDs using an optical head capable of recording or reproducing high-density optical disks. An optical element (8) is provided between a first and second laser light source and an objective lens (18) for the purpose of converting a wave front of a second optical beam 32. Furthermore, the optical element (8) and the objective lens (18) are fixed to move as a single piece.
摘要翻译：提供具有大数值孔径（NA）的物镜，本发明使用能够记录或再现高密度光盘的光学头记录或播放诸如CD和DVD的常规光盘。为了转换第二光束32的波前，光学元件（8）设置在第一和第二激光光源与物镜（18）之间。此外，光学元件（8）和物镜（18）被固定成单件移动。

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