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1. 发明申请

US20120023514A1 COMPOUND OBJECTIVE LENS, OPTICAL HEAD DEVICE, OPTICAL INFORMATION DEVICE, AND INFORMATION PROCESSING DEVICE 有权
标题翻译：化合物目标透镜，光学头装置，光信息装置和信息处理装置
公开(公告)号：US20120023514A1
公开(公告)日：2012-01-26
申请号：US13257380
申请日：2011-01-07
申请人： Yoshiaki Komma , Katsuhiko Hayashi , Fumitomo Yamasaki , Michihiro Yamagata
发明人： Yoshiaki Komma , Katsuhiko Hayashi , Fumitomo Yamasaki , Michihiro Yamagata
IPC分类号： G02B27/42 , G11B17/028 , G11B7/13
CPC分类号： G11B7/13922 , G11B7/1353 , G11B7/1374 , G11B7/1376 , G11B7/13925 , G11B2007/0006 , G11B2007/13727
摘要： A compound objective lens, an optical head device, an optical information device, and an information processing device that can inhibit the occurrence of aberration even when a light beam source wavelength shifts from the designed value. A diffraction structure having a sawtooth or stepwise cross section is formed in the region (R10) and region (R20). The height of the sawtooth or stepwise cross section formed in the region (R10) provides a light beam, which has a predetermined wavelength, with a difference in optical path length of N times the predetermined wavelength, as compared with a case of propagation in air. The height of the sawtooth or stepwise cross section formed in the region (R20) provides the light beam, which has the predetermined wavelength, with a difference in optical path length of J times the predetermined wavelength, as compared with a case of propagation in air. At least one of the difference in height between both ends of a boundary band (RB) provided between the region (R10) and the region (R20), and the width of the boundary band (RB) provides the light beam, which has the predetermined wavelength, with a difference in optical path length of (N+J)/2 times (N and J are mutually different natural numbers) the predetermined wavelength, as compared with a case of transmission in air.
摘要翻译：复光物镜，光头装置，光信息装置和信息处理装置，即使当光束源波长从设计值偏移时也能够抑制像差的发生。在区域（R10）和区域（R20）中形成具有锯齿状或阶梯状横截面的衍射结构。与在空气中传播的情况相比，在区域（R10）中形成的锯齿状或阶梯状横截面的高度提供具有预定波长的光束，其具有N倍于预定波长的光程长度差。与在空气中传播的情况相比，在区域（R20）中形成的锯齿或逐步横截面的高度提供了具有预定波长的光束，其光路长度差为J倍于预定波长。设置在区域（R10）和区域（R20）之间的边界带（RB）的两端之间的高度差异和边界带（RB）的宽度中的至少一个高度提供了具有与空气传播的情况相比，预定波长与（N + J）/ 2倍（N和J相互不同的自然数）的光程长度差异。

2. 发明申请

US20080165420A1 AFOCAL LENS, OPTICAL HEAD, OPTICAL DISK APPARATUS AND OPTICAL INFORMATION EQUIPMENT 失效
标题翻译： AFOCAL镜头，光学头，光盘设备和光信息设备
公开(公告)号：US20080165420A1
公开(公告)日：2008-07-10
申请号：US11966109
申请日：2007-12-28
申请人： Fumitomo YAMASAKI , Yoshiaki Komma , Kanji Wakabayashi , Toshiyasu Tanaka , Katsuhiko Hayashi
发明人： Fumitomo YAMASAKI , Yoshiaki Komma , Kanji Wakabayashi , Toshiyasu Tanaka , Katsuhiko Hayashi
IPC分类号： G02B27/30 , G02B27/42
CPC分类号： G02B5/1895 , G11B7/1353 , G11B2007/0006
摘要： [Problem] The present invention provides an afocal lens for an optical head that can ensure WD while satisfying NA, the optical head, an optical disc apparatus, a computer, an optical disc player, and an optical disc recorder.[Solution] Using a blue-violet laser beam source with wavelength of about 400 nm, and in an optical head compatible to optical discs having different protective substrate thickness, an afocal lens 105 that expands a diameter of light flux of light from a collimating lens and emits the light as substantially parallel light to an objective lens is provided between the collimating lens 104 and the objective lens 106. The configuration makes it possible to ensure WD while satisfying NA.
摘要翻译：本发明提供一种能够确保WD同时满足NA的光头的无焦距透镜，光头，光盘装置，计算机，光盘播放器和光盘记录器。 [解决方案]使用具有约400nm波长的蓝紫色激光束源，并且在与具有不同保护衬底厚度的光盘相兼容的光学头中，放置来自准直透镜的光束的直径的无焦透镜105 并且在准直透镜104和物镜106之间设置大致平行的光到物镜的光。该配置使得可以在满足NA的情况下确保WD。

3. 发明授权

US08305864B2 Compound objective lens, optical head device, optical information device, and information processing device 有权
标题翻译：复合物镜，光头装置，光信息装置和信息处理装置
公开(公告)号：US08305864B2
公开(公告)日：2012-11-06
申请号：US13257380
申请日：2011-01-07
申请人： Yoshiaki Komma , Katsuhiko Hayashi , Fumitomo Yamasaki , Michihiro Yamagata
发明人： Yoshiaki Komma , Katsuhiko Hayashi , Fumitomo Yamasaki , Michihiro Yamagata
IPC分类号： G11B7/00
CPC分类号： G11B7/13922 , G11B7/1353 , G11B7/1374 , G11B7/1376 , G11B7/13925 , G11B2007/0006 , G11B2007/13727
摘要： A compound objective lens, an optical head device, an optical information device, and an information processing device that can inhibit the occurrence of aberration even when a light beam source wavelength shifts from the designed value. A diffraction structure having a sawtooth or stepwise cross section is formed in the region (R10) and region (R20). The height of the sawtooth or stepwise cross section formed in the region (R10) provides a light beam, which has a predetermined wavelength, with a difference in optical path length of N times the predetermined wavelength, as compared with a case of propagation in air. The height of the sawtooth or stepwise cross section formed in the region (R20) provides the light beam, which has the predetermined wavelength, with a difference in optical path length of J times the predetermined wavelength, as compared with a case of propagation in air. At least one of the difference in height between both ends of a boundary band (RB) provided between the region (R10) and the region (R20), and the width of the boundary band (RB) provides the light beam, which has the predetermined wavelength, with a difference in optical path length of (N+J)/2 times (N and J are mutually different natural numbers) the predetermined wavelength, as compared with a case of transmission in air.
摘要翻译：复光物镜，光头装置，光信息装置和信息处理装置，即使当光束源波长从设计值偏移时也能够抑制像差的发生。在区域（R10）和区域（R20）中形成具有锯齿状或阶梯状横截面的衍射结构。与在空气中传播的情况相比，在区域（R10）中形成的锯齿状或阶梯状横截面的高度提供具有预定波长的光束，其具有N倍于预定波长的光程长度差。与在空气中传播的情况相比，在区域（R20）中形成的锯齿或逐步横截面的高度提供了具有预定波长的光束，其光路长度差为J倍于预定波长。设置在区域（R10）和区域（R20）之间的边界带（RB）的两端之间的高度差异和边界带（RB）的宽度中的至少一个高度提供了具有与空气传播的情况相比，预定波长与（N + J）/ 2倍（N和J相互不同的自然数）的光程长度差异。

4. 发明申请

US20120213052A1 OPTICAL HEAD, OPTICAL DISC DEVICE, INFORMATION PROCESSING DEVICE, AND OBJECTIVE LENS 审中-公开
标题翻译：光学头，光盘设备，信息处理设备和目标镜头
公开(公告)号：US20120213052A1
公开(公告)日：2012-08-23
申请号：US13504602
申请日：2010-12-06
申请人： Fumitomo Yamasaki , Katsuhiko Hayashi , Yoshiaki Komma
发明人： Fumitomo Yamasaki , Katsuhiko Hayashi , Yoshiaki Komma
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/1374 , G11B7/13922 , G11B2007/0013
摘要： Provided are an optical head capable of favorably recording or reproducing information to or from an information recording medium including a plurality of information recording surfaces, an optical disc device including the optical head, an information processing device including the optical disc, and an objective lens. The optical head (40) includes a blue-violet laser light source (1) which emits a blue-violet laser beam, an objective lens (8) which has an orbicular zone-shaped diffractive structure, and which diffracts the blue-violet laser beam and converges the generated diffracted light of n-th order (where n is a natural number) on a predetermined information recording surface of a multi-layer optical disc (60), and a light-receiving element (23) which receives the blue-violet laser beam reflected by the predetermined information recording surface, wherein the diffractive structure adds a positive power component and a spherical aberration component to the n-th order diffracted light.
摘要翻译：提供了一种能够向包括多个信息记录表面的信息记录介质或包括该光学头的信息记录介质，包括该光盘的信息处理设备和一个物镜良好地记录或再现信息的光学头。光头（40）包括发出蓝紫色激光的蓝紫色激光光源（1），具有圆形区域衍射结构的物镜（8），并衍射出蓝紫色激光并将所产生的n阶衍射光（其中n是自然数）收敛在多层光盘（60）的预定信息记录表面上，并且接收蓝色的光接收元件（23）紫外激光束，其中，所述衍射结构将正功率分量和球面像差分量添加到所述n级衍射光。

5. 发明授权

US08681592B2 Objective lens element and optical head device including the same 有权
标题翻译：物镜元件和包括其的光学头装置
公开(公告)号：US08681592B2
公开(公告)日：2014-03-25
申请号：US13396601
申请日：2012-02-15
申请人： Kazuhiro Minami , Yoshiaki Komma , Fumitomo Yamasaki , Katsuhiko Hayashi
发明人： Kazuhiro Minami , Yoshiaki Komma , Fumitomo Yamasaki , Katsuhiko Hayashi
IPC分类号： G11B7/00
CPC分类号： G11B7/1374 , G02B27/0037 , G11B7/1275 , G11B7/1353 , G11B7/1367 , G11B2007/0006
摘要： An objective lens element having improved diffraction efficiency at least one of used wavelengths is provided. The objective lens element includes one surface including: a first region including an optical axis; and a second region surrounding the first region. A periodic first diffraction structure is formed on the first region, and a periodic second diffraction structure different from the first diffraction structure is formed on the second region. The objective lens element satisfies the following conditions. |A1−B1|
摘要翻译：提供了具有提高的衍射效率的物镜元件中至少一种使用的波长。物镜元件包括一个表面，包括：包括光轴的第一区域; 以及围绕所述第一区域的第二区域。在第一区域上形成周期性的第一衍射结构，在第二区域上形成与第一衍射结构不同的周期性第二衍射结构。物镜元件满足以下条件。 | A1-B1 | <| A2-B2 | （1）| B1 |≧| B2 | （2）这里，A1和B1分别是在记录表面上将第一波长的光和第二波长的光会聚的第一区域的衍射级，并且A2和B2分别是在第二区域处的会聚光的第一波长和第二波长的光分别在记录表面上。

6. 发明授权

US08483023B2 Optical head, diffraction device, objective lens, and optical disc apparatus 有权
$Optical head, diffraction device, objective lens, and optical disc apparatus$
标题翻译：光头，衍射装置，物镜和光盘装置
公开(公告)号：US08483023B2
公开(公告)日：2013-07-09
申请号：US13153713
申请日：2011-06-06
申请人： Fumitomo Yamasaki , Yoshiaki Komma , Katsuhiko Hayashi
发明人： Fumitomo Yamasaki , Yoshiaki Komma , Katsuhiko Hayashi
IPC分类号： G11B7/00
CPC分类号： G11B7/1374 , G11B7/1353 , G11B7/1378 , G11B2007/0006
摘要： An object of the present invention is to reduce the influence of a stray light incident on a light receiving device by reflection of an unnecessary diffraction light not contributing to write or read on a disc surface at write or read of an optical disc having a large surface reflectivity with respect to an information recording surface. A position in which a diffraction light with an n-order in an advancing path and the n-order in a returning path, reflected on the information recording surface of a first information recording medium, is focused by a condensing lens is different from a position in which a diffraction light different from the n-order diffraction light in at least one of the advancing path and the returning path, reflected on a surface of the first information recording medium, is focused by the condensing lens.
摘要翻译：本发明的目的是通过在具有大表面的光盘的写入或读取中反射不利于写入或读取在盘表面上的不必要的衍射光来减少入射在光接收装置上的杂光的影响相对于信息记录面的反射率。其中在第一信息记录介质的信息记录表面上反射的前进路径中具有n阶的衍射光和返回路径中的n阶的聚焦透镜的位置与位置其中在第一信息记录介质的表面上反射的行进路径和返回路径中的至少一个中的n级衍射光不同的衍射光被聚光透镜聚焦。

7. 发明授权

US08391120B2 Optical head, optical disc device and information processing device 有权
标题翻译：光头，光盘装置及信息处理装置
公开(公告)号：US08391120B2
公开(公告)日：2013-03-05
申请号：US12604758
申请日：2009-10-23
申请人： Fumitomo Yamasaki , Kousei Sano , Tomoaki Tojo , Katsuhiko Hayashi , Yoshiaki Komma
发明人： Fumitomo Yamasaki , Kousei Sano , Tomoaki Tojo , Katsuhiko Hayashi , Yoshiaki Komma
IPC分类号： G11B7/135
CPC分类号： G11B7/1275 , G11B7/1374 , G11B7/13922 , G11B7/13925 , G11B2007/0006 , G11B2007/0013
摘要： An optical head, an optical disc device and an information processing device are capable of suppressing the amount of third-order astigmatism created upon recording or reproducing information on or from a multi-layer optical disc including at least three information recording surfaces. An objective lens satisfies a relationship of tc>(t0+tn)/2 assuming that t0 denotes the thickness of a light transmitting layer from the outer surface of the multi-layer optical disc to an information recording surface having the largest light transmitting layer thickness, tn denotes the thickness of a light transmitting layer from the outer surface of the multi-layer optical disc to an information recording surface having the smallest light transmitting layer thickness and tc denotes the thickness of a virtual light transmitting layer at which the absolute value of a third-order spherical aberration is minimum when blue-violet laser light is incident as parallel light on the objective lens.
摘要翻译：光头，光盘装置和信息处理装置能够抑制在包括至少三个信息记录表面的多层光盘上记录或再现信息时产生的三阶散光量。假设t0表示从多层光盘的外表面到具有最大透光层厚度的信息记录表面的透光层的厚度，物镜满足tc>（t0 + tn）/ 2的关系，tn表示从多层光盘的外表面到具有最小透光层厚度的信息记录表面的透光层的厚度，tc表示虚拟透光层的厚度，其中绝对值当蓝紫色激光作为平行光入射到物镜上时，三阶球面像差最小。

8. 发明申请

US20060164735A1 Optical pickup lens device and information recording and reproducing device using the same 有权
标题翻译：光学拾取镜头装置及其使用的信息记录和再现装置
公开(公告)号：US20060164735A1
公开(公告)日：2006-07-27
申请号：US11385829
申请日：2006-03-22
申请人： Katsuhiko Hayashi , Yasuhiro Tanaka , Michihiro Yamagata , Yoshiaki Komma , Fumitomo Yamasaki
发明人： Katsuhiko Hayashi , Yasuhiro Tanaka , Michihiro Yamagata , Yoshiaki Komma , Fumitomo Yamasaki
IPC分类号： G02B9/00
CPC分类号： G11B7/13925 , G11B7/1353 , G11B7/1367 , G11B7/1376
摘要： An optical pickup lens device includes, in the order from the light source side, collimating means for converting a bundle of rays into parallel rays or predetermined convergent or divergent rays, the collimating means being movably held along a direction of an optical axis of a bundle of rays emitted from a light source; an aberration correcting element for allowing a bundle of rays emitted from the collimating means to be transmitted therethrough; and an objective lens element having a numerical aperture of 0.8 or more, and converging a bundle of rays coming from the aberration correcting element onto the information recording medium to form a spot. The aberration correcting element and the objective lens element are integrally held together in a direction orthogonal to the optical axis so as to perform tracking on the information recording medium, and satisfy predetermined conditions.
摘要翻译：一种光学拾取透镜装置，从光源侧依次包括用于将光束变换为平行光或预定的会聚或发散光线的准直装置，准直装置沿着光束的光轴的方向可移动地保持从光源发射的光线; 用于允许从准直装置发射的光束穿过其中的像差校正元件; 以及具有0.8以上的数值孔径的物镜元件，并且将来自像差校正元件的光束会聚在信息记录介质上以形成点。像差校正元件和物镜元件在与光轴正交的方向上一体地保持在一起，以在信息记录介质上执行跟踪，并满足预定条件。

9. 发明授权

US08050168B2 Optical head device, optical information device, computer, disc player, car navigation system, optical disc recorder, and vehicle 有权
标题翻译：光头设备，光信息设备，计算机，光盘播放器，汽车导航系统，光盘记录器和车辆
公开(公告)号：US08050168B2
公开(公告)日：2011-11-01
申请号：US12374403
申请日：2007-07-18
申请人： Yoshiaki Komma , Fumitomo Yamasaki , Katsuhiko Hayashi
发明人： Yoshiaki Komma , Fumitomo Yamasaki , Katsuhiko Hayashi
IPC分类号： G11B7/00
CPC分类号： G11B7/1374 , G11B7/08511 , G11B7/0909 , G11B7/1275 , G11B7/1353 , G11B7/13925 , G11B2007/0006
摘要： An optical head device compatible to different types of optical discs and capable of guaranteeing a sufficiently wide dynamic range for a low density optical disc, and the like are provided.The optical head device includes a plurality of light sources switchably usable; an objective lens for converging light emitted from one of the plurality of light sources to an information recording layer of an optical disc; and a light detector for receiving the light reflected by the information recording layer and outputting an electric signal based on the amount of the received light. The plurality of light sources include a first light source for emitting light having a first wavelength and a second light source for emitting light having a second wavelength shorter than the first wavelength. In the optical head device, a defocus detection range of a focusing error signal obtained based on the light having the first wavelength is set to be wider than a defocus detection range of a focusing error signal obtained based on the light having the second wavelength.
摘要翻译：提供了一种与不同类型的光盘兼容且能够保证低密度光盘的足够宽的动态范围的光学头装置等。光头装置包括可切换使用的多个光源; 用于将从所述多个光源中的一个发射的光会聚到光盘的信息记录层的物镜; 以及光检测器，用于接收由信息记录层反射的光并基于所接收的光的量输出电信号。多个光源包括用于发射具有第一波长的光的第一光源和用于发射具有比第一波长短的第二波长的光的第二光源。在光头装置中，基于具有第一波长的光获得的聚焦误差信号的散焦检测范围被设定为比基于具有第二波长的光获得的聚焦误差信号的散焦检测范围宽。

10. 发明申请

US20110170398A1 OPTICAL HEAD DEVICE, OPTICAL INFORMATION DEVICE, COMPUTER, DISC PLAYER, CAR NAVIGATION SYSTEM, OPTICAL DISC RECORDER, AND VEHICLE 有权
标题翻译：光学设备，光学信息设备，计算机，光盘播放器，车辆导航系统，光盘记录器和车辆
公开(公告)号：US20110170398A1
公开(公告)日：2011-07-14
申请号：US13051003
申请日：2011-03-18
申请人： Yoshiaki Komma , Fumitomo Yamasaki , Katsuhiko Hayashi
发明人： Yoshiaki Komma , Fumitomo Yamasaki , Katsuhiko Hayashi
IPC分类号： G11B7/00
CPC分类号： G11B7/1374 , G11B7/08511 , G11B7/0909 , G11B7/1275 , G11B7/1353 , G11B7/13925 , G11B2007/0006
摘要： An optical head device compatible to different types of optical discs and capable of guaranteeing a sufficiently wide dynamic range for a low density optical disc, and the like are provided.The optical head device includes a plurality of light sources switchably usable; an objective lens for converging light emitted from one of the plurality of light sources to an information recording layer of an optical disc; and a light detector for receiving the light reflected by the information recording layer and outputting an electric signal based on the amount of the received light. The plurality of light sources include a first light source for emitting light having a first wavelength and a second light source for emitting light having a second wavelength shorter than the first wavelength. In the optical head device, a defocus detection range of a focusing error signal obtained based on the light having the first wavelength is set to be wider than a defocus detection range of a focusing error signal obtained based on the light having the second wavelength.
摘要翻译：提供了一种与不同类型的光盘兼容且能够保证低密度光盘的足够宽的动态范围的光学头装置等。光头装置包括可切换使用的多个光源; 用于将从所述多个光源中的一个发射的光会聚到光盘的信息记录层的物镜; 以及光检测器，用于接收由信息记录层反射的光并基于所接收的光的量输出电信号。多个光源包括用于发射具有第一波长的光的第一光源和用于发射具有比第一波长短的第二波长的光的第二光源。在光头装置中，基于具有第一波长的光获得的聚焦误差信号的散焦检测范围被设定为比基于具有第二波长的光获得的聚焦误差信号的散焦检测范围宽。

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