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公开(公告)号：US6130872A
公开(公告)日：2000-10-10
申请号：US81982
申请日：1998-05-20
CPC分类号： G11B7/1353 , G11B7/131 , G11B7/13922 , G11B2007/0006 , G11B7/0909
摘要： An optical pickup apparatus which can be designed compact while having a plurality of semiconductor lasers. The optical pickup apparatus, which reads recorded information from an optical recording medium, comprises an optical system including light intensity detection means having a quarter-split light receiving surface, two semiconductor lasers for emitting light beams of different wavelengths, an objective lens for directing each of the light beams onto an optical recording medium to form a light spot on a recording surface, and first and second holographic optical elements located between the quarter-split light receiving surface and the objective lens, whereby the first holographic optical element eliminates coma aberration and spherical aberration of a light beam of a first wavelength from one of the semiconductor lasers, traveled through the recording surface, thereby generating a predetermined amount of astigmatism, and the second holographic optical element eliminates coma aberration and spherical aberration of a light beam of a second wavelength from the other one of the semiconductor lasers, traveled through the recording surface, thereby generating a predetermined amount of astigmatism.
摘要翻译： 可以设计紧凑的光拾取装置，同时具有多个半导体激光器。 从光记录介质读取记录信息的光学拾取装置包括光学系统，其包括具有四分之一分裂光接收表面的光强度检测装置，用于发射不同波长的光束的两个半导体激光器，用于引导每个 的光束到光记录介质上以在记录表面上形成光点，以及位于四分之一分光接收表面和物镜之间的第一和第二全息光学元件，由此第一全息光学元件消除彗差， 来自一个半导体激光器的第一波长的光束的球面像差，行进通过记录表面，从而产生预定量的散光，并且第二全息光学元件消除第二个光束的彗形像差和球面像差 波长从另一个半导体 或激光器行进通过记录表面，从而产生预定量的像散。
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公开(公告)号：US6084841A
公开(公告)日：2000-07-04
申请号：US021938
申请日：1998-02-11
CPC分类号： G11B7/1359 , G11B7/121 , G11B7/1275 , G11B7/1362 , G11B7/1395 , G11B2007/0006
摘要： An optical pickup device includes at least four light-receiving-surface elements, at least two semiconductor lasers, and an optical system for irradiating a light beam onto an optical recording medium through an objective lens for forming a light spot onto an information recording surface thereof. The optical system guides the return light from the light spot to the four light-receiving-surface elements through the objective. The semiconductor lasers are mounted on a plurality of flat side surfaces of a single heat sink which do not exist on a common virtual plane.
摘要翻译： 光拾取装置包括至少四个光接收表面元件，至少两个半导体激光器和用于通过用于在其信息记录表面上形成光点的物镜将光束照射到光学记录介质上的光学系统 。 光学系统通过物镜将来自光点的返回光引导到四个光接收表面元件。 半导体激光器安装在不存在于公共虚拟平面上的单个散热器的多个平坦侧表面上。
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公开(公告)号：US6031667A
公开(公告)日：2000-02-29
申请号：US35444
申请日：1998-03-05
CPC分类号： G11B7/1359 , G11B7/1365 , G11B2007/0006 , G11B2007/13727
摘要： Disclosed is an optical pickup device which comprises a beam emitting system for supplying at least two independent light beams, a common light converging optical system for converging the light beams from the beam emitting system toward a recording medium, a first optical element for reflecting one of the light beams from the beam emitting system so as to guide the reflected light beam to the light converging optical system and for transmitting returning light beams from the recording medium therethrough without causing substantial aberration, a second optical element for causing astigmatic aberration to the returned light beams which pass through the first optical element, while transmitting the returning light beams therethrough, and a light receiving system for receiving the returning light beams which have passed through the second optical element.
摘要翻译： 公开了一种光拾取装置，其包括用于提供至少两个独立光束的光束发射系统，用于将来自光束发射系统的光束会聚到记录介质的公共聚光光学系统，用于反射 来自光束发射系统的光束，以将反射光束引导到聚光光学系统，并且用于从记录介质通过返回光束而不产生实质的像差;第二光学元件，用于引起对返回光的散光像差 通过第一光学元件的光束同时透射返回的光束;以及光接收系统，用于接收已经通过第二光学元件的返回光束。
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公开(公告)号：US06185176B2
公开(公告)日：2001-02-06
申请号：US09081801
申请日：1998-05-20
IPC分类号： G11B712
CPC分类号： G11B7/123 , G11B7/0901 , G11B7/0909 , G11B7/1353 , G11B2007/0006 , G11B2007/13727
摘要： An optical pickup apparatus which can be designed compact while having a plurality of semiconductor lasers. The optical pickup apparatus, which reads recorded information from an optical recording medium, comprises an optical system including light intensity detection element having a quarter-split light receiving surface, two semiconductor lasers for emitting light beams of different wavelengths, an objective lens for directing each of the light beams onto an optical recording medium to form a light spot on a recording surface, and a holographic optical element located between the quarter-split light receiving surface and the objective lens, whereby the holographic optical element eliminates coma aberration and spherical aberration of light beams launched from the two semiconductor lasers and traveled through the recording surface and the objective lens, thereby generating a predetermined amount of astigmatism. The holographic optical element further has a lens performance for converging light beams, launched from the two semiconductor lasers and traveled through the recording surface and the objective lens, onto the quarter-split light receiving surface.
摘要翻译： 可以设计紧凑的光拾取装置，同时具有多个半导体激光器。 从光记录介质读取记录信息的光学拾取装置包括光学系统，其包括具有四分之一分割光接收表面的光强度检测元件，用于发射不同波长的光束的两个半导体激光器，用于引导每个 的光束到光记录介质上以在记录表面上形成光斑;以及全息光学元件，位于四分之一分光接收表面和物镜之间，由此全息光学元件消除了彗形像差和球面像差 光束从两个半导体激光器发射并行进通过记录表面和物镜，从而产生预定量的像散。 全息光学元件还具有用于会聚来自两个半导体激光器并且通过记录表面和物镜行进的光束到四分之一分光接收表面上的透镜性能。
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25.发明授权Astigmatism generating device to remove comma aberration and spherical aberration 失效散光产生装置去除逗号差异和球面像差公开(公告)号：US06445668B2
公开(公告)日：2002-09-03
申请号：US09085229
申请日：1998-05-27
IPC分类号： G11B700
CPC分类号： G11B7/1365 , G11B7/0909 , G11B7/1353 , G11B7/1381 , G11B2007/0006
摘要： An optical pickup device includes a photodetector divided into four light-receiving elements by two dividing lines, an incident optical system for irradiating a light beam onto an optical recording medium, and a receiving optical system for guiding a return light from the optical recording medium to the photodetector, wherein the receiving optical system includes astigmatism generating means for generating astigmatism having an astigmatism axis at an angle of 45 degree with respect to the two dividing lines.
摘要翻译： 光拾取装置包括通过两条分割线分成四个光接收元件的光电检测器，用于将光束照射到光记录介质上的入射光学系统和用于将来自光记录介质的返回光引导到 所述光检测器，其中所述接收光学系统包括散光产生装置，用于产生具有相对于所述两条分割线成45度角的像散轴的像散。
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公开(公告)号：US20080239419A1
公开(公告)日：2008-10-02
申请号：US10594588
申请日：2005-03-15
CPC分类号： G02B5/32 , G03H1/22 , G11B7/0065
摘要： A hologram reproducing apparatus is provided that can be reduced in size. A hologram reproducing apparatus of the invention reproduces signal information from a recorded media having a domain of diffraction grating that is irradiated with a record light beam containing a coherent reference light component and a signal light component spatially modulated according to the signal information substantially on the same optical axis and is recorded an interference of the reference light component and the signal light component. The hologram reproducing apparatus comprises a light source for emitting a coherent light beam, a light-beam irradiator for irradiating the light beam to the domain of diffraction grating of the recording medium, a light collector for collecting a reproduced light beam reproduced by irradiating the light beam to the domain of diffraction grating toward a convergent position, an incident-light processing unit provided at the convergent position and for separating a Fourier 0-order component of the reproduced light beam and a diffraction light component of the reproduced light beam, and a detecting section for detecting the signal information from the diffraction component.
摘要翻译： 提供了可以减小尺寸的全息图再现装置。 本发明的全息图再现装置从具有衍射光栅域的记录介质再现信号信息，所述记录介质用包含相干参考光分量的记录光束和根据基本相同的信号信息空间调制的信号光分量照射 并记录参考光分量和信号光分量的干扰。 全息图再现装置包括用于发射相干光束的光源，用于将光束照射到记录介质的衍射光栅域的光束照射器，用于收集通过照射光而再现的再现光束的光收集器 光束到衍射光栅域朝向收敛位置，入射光处理单元设置在会聚位置并用于分离再生光束的傅立叶0次分量和再现光束的衍射光分量，以及 检测部分，用于从衍射分量检测信号信息。
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27.发明申请Hologram apparatus capable of detecting and correcting distortion of hologram image 失效全息图设备能够检测和校正全息图的失真公开(公告)号：US20050162719A1
公开(公告)日：2005-07-28
申请号：US11041724
申请日：2005-01-25
CPC分类号： G11B7/00781 , G03H1/22 , G03H1/2205 , G03H1/2249 , G03H2210/20 , G11B7/0065 , G11B7/128 , G11B7/13
摘要： A hologram apparatus includes a light beam interfering section for allowing reference and signal light beams to interfere to form a hologram recording region; a reproducing section for allowing the reference light beam to be incident on the recording region and generating a reproduced light; an image sensor for detecting a hologram-reproduced image; a distortion determining section for detecting the distortion-detecting data from the hologram-reproduced image to determine a distortion of the hologram-reproduced image; a distortion corrector for correcting a distortion of the hologram-reproduced image; and a controller for correcting the distortion in accordance with a determined distortion.
摘要翻译： 全息图装置包括光束干涉部分，用于允许参考信号光束和信号光束干涉以形成全息图记录区域; 用于允许参考光束入射到记录区域并产生再现光的再现部分; 用于检测全息图再现图像的图像传感器; 失真确定部分，用于从全息图再现图像中检测失真检测数据，以确定全息图再现图像的失真; 用于校正全息图再现图像的失真的失真校正器; 以及控制器，用于根据确定的失真校正失真。
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28.发明申请Recording medium and recording and reproducing method and recording and reproducing device 失效记录介质和记录和再现方法以及记录和再现装置公开(公告)号：US20050157613A1
公开(公告)日：2005-07-21
申请号：US11001648
申请日：2004-12-02
IPC分类号： G03H1/02 , G11B7/00 , G11B7/004 , G11B7/0065 , G11B7/007 , G11B7/085 , G11B7/09 , G11B7/135 , G11B7/24
CPC分类号： G11B7/00781 , G11B7/0065 , G11B7/00745 , G11B7/0938 , G11B7/1356 , G11B7/24 , G11B7/24044 , G11B7/2405
摘要： A recording medium has a recording layer capable of be performed in recording or reproducing of information with light irradiation and carried with a substrate. The recording medium includes a guide layer having guide tracks each followed by a light beam spot focused from an objective lens through the recording layer, the guide tracks disposed at a first pitch. The recording medium includes a guide track transfer region provided on the guide layer and having at least one line of a track arranged in parallel between the guide tracks adjacent to each other in the extending direction of the guide track so as to be in a direction perpendicular to the guide track within a range shorter than that of the guide track.
摘要翻译： 记录介质具有能够通过光照射记录或再现信息而执行的记录层，并且携带有基板。 记录介质包括具有引导轨道的引导层，每个引导轨道之后是通过记录层从物镜聚焦的光束点，导轨以第一间距设置。 记录介质包括设置在引导层上的引导轨道传送区域，并且在引导轨道的延伸方向上具有彼此相邻的引导轨道之间平行布置的轨道的至少一条直线， 在比导轨更短的范围内到导轨。
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29.发明授权Hologram apparatus capable of detecting and correcting distortion of hologram image 失效全息图设备能够检测和校正全息图的失真公开(公告)号：US07031038B2
公开(公告)日：2006-04-18
申请号：US11041724
申请日：2005-01-25
IPC分类号： G03H1/08
CPC分类号： G11B7/00781 , G03H1/22 , G03H1/2205 , G03H1/2249 , G03H2210/20 , G11B7/0065 , G11B7/128 , G11B7/13
摘要： A hologram apparatus includes a light beam interfering section for allowing reference and signal light beams to interfere to form a hologram recording region; a reproducing section for allowing the reference light beam to be incident on the recording region and generating a reproduced light; an image sensor for detecting a hologram-reproduced image; a distortion determining section for detecting the distortion-detecting data from the hologram-reproduced image to determine a distortion of the hologram-reproduced image; a distortion corrector for correcting a distortion of the hologram-reproduced image; and a controller for correcting the distortion in accordance with a determined distortion.
摘要翻译： 全息图装置包括光束干涉部分，用于允许参考信号光束和信号光束干涉以形成全息图记录区域; 用于允许参考光束入射到记录区域并产生再现光的再现部分; 用于检测全息图再现图像的图像传感器; 失真确定部分，用于从全息图再现图像中检测失真检测数据，以确定全息图再现图像的失真; 用于校正全息图再现图像的失真的失真校正器; 以及控制器，用于根据确定的失真校正失真。
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30.发明授权公开(公告)号：US07453791B2
公开(公告)日：2008-11-18
申请号：US11001648
申请日：2004-12-02
IPC分类号： G11B7/24
CPC分类号： G11B7/00781 , G11B7/0065 , G11B7/00745 , G11B7/0938 , G11B7/1356 , G11B7/24 , G11B7/24044 , G11B7/2405
摘要： A recording medium has a recording layer capable of be performed in recording or reproducing of information with light irradiation and carried with a substrate. The recording medium includes a guide layer having guide tracks each followed by a light beam spot focused from an objective lens through the recording layer, the guide tracks disposed at a first pitch. The recording medium includes a guide track transfer region provided on the guide layer and having at least one line of a track arranged in parallel between the guide tracks adjacent to each other in the extending direction of the guide track so as to be in a direction perpendicular to the guide track within a range shorter than that of the guide track.
摘要翻译： 记录介质具有能够通过光照射记录或再现信息而执行的记录层，并且携带有基板。 记录介质包括具有引导轨道的引导层，每个引导轨道之后是通过记录层从物镜聚焦的光束点，导轨以第一间距设置。 记录介质包括设置在引导层上的引导轨道传送区域，并且在引导轨道的延伸方向上具有彼此相邻的引导轨道之间平行布置的轨道的至少一条直线， 在比导轨更短的范围内到导轨。
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