专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明申请

US20110032805A1 INFORMATION RECORDING MEDIUM, REPRODUCING DEVICE AND REPRODUCING METHOD 有权
标题翻译：信息记录介质，再现设备和再现方法
公开(公告)号：US20110032805A1
公开(公告)日：2011-02-10
申请号：US12936939
申请日：2009-12-03
申请人： Masahito Nakao , Yasumori Hino , Yoshiaki Komma , Fumitomo Yamasaki , Kousei Sano
发明人： Masahito Nakao , Yasumori Hino , Yoshiaki Komma , Fumitomo Yamasaki , Kousei Sano
IPC分类号： G11B7/26 , G11B7/12
CPC分类号： G11B7/005 , G11B7/00736 , G11B7/1267 , G11B7/24038 , G11B2007/0013
摘要： An information recording medium according to the present invention includes at least three information recording layers. If the readout power of a laser beam in reading information from an information recording layer L(n) is identified by Pw(n), and if the readout power of the laser beam in reading information from an information recording layer L(n+a) is identified by Pw(n+a), then a base thickness between the information recording layers is determined so that the intensity of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n) becomes equal to or lower than that of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n+a).
摘要翻译：根据本发明的信息记录介质包括至少三个信息记录层。如果从信息记录层L（n）读取信息中的激光束的读出功率被Pw（n）识别，并且如果从信息记录层L（n + a）读取信息中的激光束的读出功率）由Pw（n + a）识别，则信息记录层之间的基底厚度被确定为当信息记录层L（n + a）被激光束照射时具有读出功率的光的强度当信息记录层L（n + a）被具有读出功率Pw（n + a）的激光束照射时，Pw（n）变得等于或低于光的光。

52. 发明申请

US20080192611A1 OPTICAL HEAD, DIFFRACTION DEVICE, OBJECTIVE LENS, AND OPTICAL DISC APPARATUS 有权
标题翻译：光学头，衍射装置，目标透镜和光盘设备
公开(公告)号：US20080192611A1
公开(公告)日：2008-08-14
申请号：US11951937
申请日：2007-12-06
申请人： Fumitomo Yamasaki , Yoshiaki Komma , Katsuhiko Hayashi
发明人： Fumitomo Yamasaki , Yoshiaki Komma , Katsuhiko Hayashi
IPC分类号： G11B7/135
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。

53. 发明授权

US07221521B2 Optical pickup lens device and information recording and reproducing device using the same 有权
公开(公告)号：US07221521B2
公开(公告)日：2007-05-22
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： G02B13/18 , G02B3/02 , G11B7/00 , G11B7/135
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, a collimating lens for converting a bundle of rays into parallel rays or predetermined convergent or divergent rays, the collimating lens 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 lens 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.

54. 发明授权

US08681593B2 Objective lens, optical head and optical disk device 有权
标题翻译：物镜，光头和光盘装置
公开(公告)号：US08681593B2
公开(公告)日：2014-03-25
申请号：US13578045
申请日：2011-03-17
申请人： Fumitomo Yamasaki , Yoshiaki Komma , Katsuhiko Hayashi , Yoshifumi Takasu
发明人： Fumitomo Yamasaki , Yoshiaki Komma , Katsuhiko Hayashi , Yoshifumi Takasu
IPC分类号： G11B7/135
CPC分类号： G02B5/1895 , G02B5/1876 , G11B7/1353 , G11B7/1374
摘要： A lens surface of an objective lens includes an optical surface formed of a plurality of annular optical surfaces which include an approximately stair-shaped cross section and which are annularly partitioned centered around an optical axis of the objective lens, and a plurality of connecting surfaces that connect the plurality of mutually adjacent annular optical surfaces to each other. The plurality of connecting surfaces include cylindrical connecting surfaces formed of a cylindrical surface centered around the optical axis and a conical connecting surface formed of a conical surface centered around the optical axis, and the conical connecting surface connects the annular optical surface and the annular optical surface.
摘要翻译：物镜的透镜表面包括由多个环形光学表面形成的光学表面，该光学表面包括大致阶梯状的横截面，并且以物镜的光轴为中心环形分隔，以及多个连接表面，将多个相互相邻的环形光学表面彼此连接。多个连接面包括由以光轴为中心的圆筒形表面形成的圆柱形连接表面和由以光轴为中心的锥形表面形成的锥形连接表面，并且锥形连接表面连接环形光学表面和环形光学表面。

55. 发明申请

US20120320728A1 OBJECTIVE LENS, OPTICAL HEAD AND OPTICAL DISK DEVICE 有权
标题翻译：目标镜头，光头和光盘设备
公开(公告)号：US20120320728A1
公开(公告)日：2012-12-20
申请号：US13578045
申请日：2011-03-17
申请人： Fumitomo Yamasaki , Yoshiaki Komma , Katsuhiko Hayashi , Yoshifumi Takasu
发明人： Fumitomo Yamasaki , Yoshiaki Komma , Katsuhiko Hayashi , Yoshifumi Takasu
IPC分类号： G11B7/00 , G02B3/02
CPC分类号： G02B5/1895 , G02B5/1876 , G11B7/1353 , G11B7/1374
摘要： A lens surface (22) of an objective lens (20) includes an optical surface (221) formed of a plurality of annular optical surfaces (22a, 22b, 22c, and 22d) which include an approximately stair-shaped cross section and which are annularly partitioned centered around an optical axis (OA) of the objective lens (20), and a plurality of connecting surfaces (251) that connect the plurality of mutually adjacent annular optical surfaces to each other. The plurality of connecting surfaces (251) include cylindrical connecting surfaces (25b and 25c) formed of a cylindrical surface centered around the optical axis (OA) and a conical connecting surface (26a) formed of a conical surface centered around the optical axis (OA), and the conical connecting surface (26a) connects the annular optical surface (22c) and the annular optical surface (22d).
摘要翻译：物镜（20）的透镜表面（22）包括由多个环形光学表面（22a，22b，22c和22d）形成的光学表面（221），该光学表面包括大致阶梯状的横截面，以所述物镜（20）的光轴（OA）为中心环状划分，以及将所述多个相互相邻的环状光学面彼此连接的多个连接面（251）。多个连接面（251）包括由以光轴（OA）为中心的圆筒面形成的圆筒状连接面（25b，25c）和由以光轴（OA）为中心的圆锥面形成的锥形连接面），并且锥形连接面（26a）连接环状光学面（22c）和环状光学面（22d）。

56. 发明授权

US08300513B2 Optical head, optical head manufacturing method and optical disc device 有权
标题翻译：光头，光头制造方法和光盘装置
公开(公告)号：US08300513B2
公开(公告)日：2012-10-30
申请号：US12238888
申请日：2008-09-26
申请人： Fumitomo Yamasaki , Yoshiaki Komma , Kanji Wakabayashi
发明人： Fumitomo Yamasaki , Yoshiaki Komma , Kanji Wakabayashi
IPC分类号： G11B7/00
CPC分类号： G11B7/0956 , G11B7/1275 , G11B7/13925 , G11B2007/0006
摘要： It is aimed to provide an optical head, an optical head manufacturing method and an optical disc device capable of correcting coma aberration generated due to different positions of emission points of a plurality of laser lights having different wavelengths.A two-wavelength laser light source 1 is arranged to correct coma aberration generated in a radial direction of a CD 80 in the case where an objective lens 6 is tilted to locate an inner peripheral end of the objective lens 6 in the radial direction of the CD 80 lower than an outer peripheral end thereof, and an objective lens actuator 9 tilts the objective lens 6 to locate the inner peripheral end of the objective lens 6 in the radial direction of the CD 80 lower than the outer peripheral end thereof.
摘要翻译：旨在提供一种能够校正由于具有不同波长的多个激光的发射点的不同位置而产生的彗差的光学头，光学头制造方法和光盘装置。在物镜6倾斜的情况下，配置双波长激光光源1，以校正在CD 80的径向上产生的彗形像差，以使物镜6的内周端位于 CD 80低于其外周端，物镜致动器9使物镜6倾斜，使物镜6的内周端沿CD80的径向低于其外周端。

57. 发明授权

US08289831B2 Optical head, optical element with diffraction grating, optical disc device and information processing device 有权
$Optical head, optical element with diffraction grating, optical disc device and information processing device$
标题翻译：光头，衍射光栅元件，光盘装置及信息处理装置
公开(公告)号：US08289831B2
公开(公告)日：2012-10-16
申请号：US13364469
申请日：2012-02-02
申请人： Fumitomo Yamasaki , Yoshiaki Komma , Tomoaki Tojo
发明人： Fumitomo Yamasaki , Yoshiaki Komma , Tomoaki Tojo
IPC分类号： G11B7/00
CPC分类号： G11B7/126
摘要： An optical head includes a blue-violet laser light source for emitting a blue-violet laser beam, a mirror with a diffraction grating for transmitting and reflecting the blue-violet laser beam at a predetermined ratio, and a front monitor sensor for receiving transmitted light or reflected light from the mirror with a diffraction grating and creating an APC signal for controlling an output of the blue-violet laser light source. The mirror with a diffraction grating includes a first surface which the blue-violet laser beam enters, and a second surface facing the first surface. The first surface and the second surface are mutually parallel. A reflecting coat for transmitting and reflecting the blue-violet laser beam at a predetermined ratio is formed on the first surface, and a diffraction grating is formed on the second surface.
摘要翻译：光头包括用于发射蓝紫色激光束的蓝紫色激光光源，具有用于以预定比率透射和反射蓝紫色激光束的衍射光栅的反射镜和用于接收透射光的前监视传感器或具有衍射光栅的反射镜的反射光，并产生用于控制蓝紫色激光光源的输出的APC信号。具有衍射光栅的反射镜包括蓝紫色激光束进入的第一表面和面向第一表面的第二表面。第一表面和第二表面相互平行。在第一表面上形成用于以预定比率透射和反射蓝紫色激光的反射涂层，并且在第二表面上形成衍射光栅。

58. 发明申请

US20120207008A1 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头设备
公开(公告)号：US20120207008A1
公开(公告)日：2012-08-16
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： G11B7/1374 , G02B3/02
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记录在记录表面上。

59. 发明授权

US08179769B2 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：US08179769B2
公开(公告)日：2012-05-15
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。

60. 发明授权

US08009526B2 Optical pickup device and collimate lens 有权
标题翻译：光学拾取装置和准直透镜
公开(公告)号：US08009526B2
公开(公告)日：2011-08-30
申请号：US12667877
申请日：2008-10-10
申请人： Kanji Wakabayashi , Fumitomo Yamasaki , Yoshiaki Komma , Hironori Tomita
发明人： Kanji Wakabayashi , Fumitomo Yamasaki , Yoshiaki Komma , Hironori Tomita
IPC分类号： G11B7/00
CPC分类号： G11B7/0956 , G11B7/13927 , G11B2007/0006
摘要： It is an object of the present invention to provide an optical pickup device being capable of correcting coma aberration induced in a light-condensing optical system including an objective lens for an optical disc and having a reduced size and a reduced thickness in comparison with the conventional art. The present invention includes a first coma-aberration correction actuator (6) including a first tilt drive portion for inclining an objective lens in a first tilt direction, and a second coma-aberration correction actuator (7) including a second tilt drive portion for inclining, in a second tilt direction, a coma-aberration correction lens placed between a light source and a raising mirror for reflecting emitted light toward the objective lens.
摘要翻译：本发明的目的是提供一种光学拾取装置，其能够校正在具有光盘的物镜的聚光光学系统中引起的彗形像差，并且与常规的相比具有减小的尺寸和减小的厚度艺术。本发明包括第一彗形像差校正致动器（6），其包括用于沿第一倾斜方向倾斜物镜的第一倾斜驱动部分和包括第二倾斜驱动部分的第二彗差校正致动器（7）在第二倾斜方向上，放置在光源和提升镜之间的彗差校正透镜，用于将发射的光反射到物镜。

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