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41.发明授权Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same 有权光头装置，使用该装置的倾斜检测装置以及使用该装置的光信息处理装置公开(公告)号：US06314068B1
公开(公告)日：2001-11-06
申请号：US09640769
申请日：2000-08-17
IPC分类号： G11B700
CPC分类号： G11B7/1381 , G11B7/0943 , G11B7/0953 , G11B7/0956 , G11B7/131
摘要： An inclination detection apparatus is provided which includes an optical system for collecting a beam emitted by a light source onto an information memory medium. The inclination detection apparatus further includes a light detector for generating a detection signal in accordance with a light amount of the beam reflected by the information memory medium, the light detector including a first light receiving section and a second light receiving section. In addition, the inclination detection apparatus includes a signal processing section for processing the detection signal. The signal processing section generates an inclination detection signal based on a difference between a first sum signal and a second sum signal, the first sum signal being based on a sum of a first light receiving section signal and a second light receiving section signal, the second sum signal being based on a sum of a third light receiving section signal and a fourth light receiving section signal. Moreover, the signal processing section generates a tracking error signal based on a difference between a fifth light receiving section signal and a sixth light receiving section signal.
摘要翻译： 提供了一种倾斜检测装置，其包括用于将由光源发射的光束收集到信息存储介质上的光学系统。 倾斜检测装置还包括光检测器，用于根据由信息存储介质反射的光束的光量产生检测信号，光检测器包括第一光接收部分和第二光接收部分。 此外，倾斜检测装置包括用于处理检测信号的信号处理部。 信号处理部分基于第一和信号和第二和信号之间的差产生倾斜检测信号，第一和信号基于第一光接收部分信号和第二光接收部分信号的和，第二和 和信号基于第三光接收部分信号和第四光接收部分信号的和。 此外，信号处理部分基于第五光接收部分信号和第六光接收部分信号之间的差产生跟踪误差信号。
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42.发明授权Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same 有权光头装置，使用该装置的倾斜检测装置以及使用该装置的光信息处理装置公开(公告)号：US07203138B2
公开(公告)日：2007-04-10
申请号：US10691317
申请日：2003-10-22
IPC分类号： G11B7/00
CPC分类号： G11B7/131 , G11B7/0943 , G11B7/0953 , G11B7/0956 , G11B7/1353 , G11B2007/13727
摘要： An optical head device includes a light source for emitting light; a collection optical system for collecting the light emitted by the light source to an information memory medium including tracks having prescribed grooves; a light detector having a plurality of detection areas for receiving the light reflected by the information memory medium and outputting a signal in accordance with a light amount of the light received; a tracking error signal generator for receiving the signals output from the light detector and generating a tracking error signal based on the signals; and a light division element for dividing a reflected light reflected by the information memory medium. A relationship λ/(NA·Tp)≧1 is satisfied where λ is the wavelength of the light emitted from the light source, NA is the numerical aperture of the collection optical system, and Tp is the distance from a center of the track in the information memory medium to a center of the adjacent track; and the tracking error signal generator generates a tracking error signal from an area except for an overlapping area of the reflected light, the overlapping area being an area of overlapping two circles each having a radius of 1 and having a center of one circle being apart from a center of the reflected light beam at a distance of λ/(NA·2Tp) in a direction orthogonal to the track from a center of a cross-section of the reflected light, when the cross-section of the reflected light on the light division element in a circle having a radius of 1.
摘要翻译： 光头装置包括用于发光的光源; 收集光学系统，用于将由光源发射的光收集到包括具有规定凹槽的轨道的信息存储介质; 具有多个检测区域的光检测器，用于接收由信息存储介质反射的光并根据所接收的光的光量输出信号; 跟踪误差信号发生器，用于接收从光检测器输出的信号并基于该信号产生跟踪误差信号; 以及用于分割由信息存储介质反射的反射光的光分离元件。 满足λ/（NA.Tp）> = 1的关系，其中λ是从光源发射的光的波长，NA是收集光学系统的数值孔径，Tp是从轨道的中心的距离 在信息存储介质中到相邻轨道的中心; 并且跟踪误差信号发生器从除了反射光的重叠区域之外的区域产生跟踪误差信号，重叠区域是具有半径为1并且具有一个圆的中心的两个圆的重叠区域 在反射光的横截面的中心处，在与轨道正交的方向上的距离λ/（NA.2Tp）处的反射光束的中心，当反射光的横截面 半径为1的圆的分割元素。
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43.发明申请Optical information recording substrate and recording/reproducing device using it 审中-公开光信息记录基板和使用它的记录/再现装置公开(公告)号：US20060072438A1
公开(公告)日：2006-04-06
申请号：US10527018
申请日：2003-09-02
申请人： Seiji Nishino , Teruhiro Shiono , Hiroaki Yamamoto
发明人： Seiji Nishino , Teruhiro Shiono , Hiroaki Yamamoto
IPC分类号： G11B7/24
CPC分类号： G11B7/24038 , B82Y10/00 , G11B7/245 , G11B7/2475 , G11B7/252 , G11B7/2534 , G11B7/2542 , G11B7/2575 , G11B2007/0013 , G11B2007/24304 , G11B2007/2432 , G11B2007/24324
摘要： To provide an optical information storage medium with high recording/reproducing sensitivity. An optical information storage medium 100 includes a substrate 56 and a multilayer structure 49, which is provided on the substrate 56 and includes at least one storage layer 57. The storage layer 57 includes polydiacetylene or merocyanine and is amorphous.
摘要翻译： 提供具有高记录/再现灵敏度的光学信息存储介质。 光学信息存储介质100包括基板56和多层结构49，其设置在基板56上并且包括至少一个存储层57.存储层57包括聚二乙炔或部花青并且是无定形的。
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44.发明授权Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same 有权光头装置，使用该装置的倾斜检测装置以及使用该装置的光信息处理装置公开(公告)号：US06665257B2
公开(公告)日：2003-12-16
申请号：US09761072
申请日：2001-01-15
IPC分类号： G11B700
CPC分类号： G11B7/0943 , G11B7/0953 , G11B7/0956 , G11B7/131 , G11B7/1381
摘要： An optical head device includes a light source for emitting light; a collection optical system for collecting the light emitted by the light source to an information memory medium including at least one of a track having a mark or a space selectively arranged, and a track having a prescribed groove; a light detector having a plurality of detection areas for receiving the light reflected by the information memory medium and outputting a signal in accordance with a light amount of the light received; a division element for dividing the light reflected by the information memory medium and allowing the light to be received by the light detector; a switch element for receiving a first signal and a second signal, which are respectively obtained in accordance with the reflected light incident on a first prescribed area and a second prescribed area of the division element and outputting either one of the first signal or the second signal, the first and second prescribed areas being obtained by dividing the division element along at least one division line; and an information reproduction signal generator for receiving the signal output by the switch element and generating information recorded on the track. The switch element outputs either one of the first signal and the second signal in accordance with a distance and e positional relationship between a light collection point of the light output from the collection light system and the track.
摘要翻译： 光头装置包括用于发光的光源; 收集光学系统，用于将由光源发射的光收集到信息存储介质中，所述信息存储介质包括具有选择性排列的标记或空间的轨道和具有规定槽的轨道中的至少一个; 具有多个检测区域的光检测器，用于接收由信息存储介质反射的光并根据所接收的光的光量输出信号; 分割元件，用于分割由信息存储介质反射的光并允许光被光检测器接收; 用于接收第一信号和第二信号的开关元件，它们分别根据入射在分割元件的第一规定区域和第二规定区域上的反射光获得并输出第一信号或第二信号 所述第一规定区域和所述第二规定区域通过沿着至少一个分割线划分所述分割单元而获得; 以及信息再现信号发生器，用于接收由开关元件输出的信号并产生记录在轨道上的信息。 开关元件根据从收集光系统输出的光的光收集点与轨道之间的距离和e位置关系，输出第一信号和第二信号中的任一个。
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公开(公告)号：US06418095B1
公开(公告)日：2002-07-09
申请号：US08877363
申请日：1997-06-17
IPC分类号： G11B700
CPC分类号： G11B7/1381 , G11B7/0943 , G11B7/0953 , G11B7/0956 , G11B7/131
摘要： An optical head device includes a light source for emitting at least one of a coherent beam and a quasi-monochromatic beam; a collection optical system for collecting the beam to an information memory medium having a track which has at least one mark and at least one space; a light detector having a plurality of detection areas for receiving the beam reflected by the information memory medium and outputting a signal in accordance with a light amount of the beam received; and a tracking error signal generator for receiving the signals output from the light detector and generating a tracking error signal based on the signals. The tracking error signal generator reduces a difference between a first signal amplitude and a second signal amplitude. The first signal amplitude is an absolute value of a difference between first and second signal levels. The second signal amplitude is an absolute value of a difference between the first and third signal levels. The first signal level is a value of the tracking error signal obtained when the beam emitted by the light source is radiated to a center of the track. The second and third signal levels are, respectively, a maximum value and a minimum value of the tracking error signal obtained when the information memory medium is scanned by the beam emitted by the light source in a direction perpendicular to the track.
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46.发明授权Optical head apparatus and diffraction element having at least two diffractive surfaces 失效具有至少两个衍射面的光学头装置和衍射元件
公开(公告)号：US5627812A
公开(公告)日：1997-05-06
申请号：US337369
申请日：1994-11-08
申请人： Hiroaki Yamamoto , Seiji Nishino
发明人： Hiroaki Yamamoto , Seiji Nishino
CPC分类号： G11B7/131 , G02B27/4238 , G02B27/4261 , G02B27/4272 , G02B5/1814 , G11B11/10543 , G11B11/10576 , G11B7/1353 , G11B7/0901 , G11B7/0909 , G11B7/0912 , G11B7/0916
摘要： The light reading the information of an optomagnetic disk is focused by a detector lens 104, and is put into a polarizing hologram 121 and a polarizing hologram 122 composed of lithium niobate. These polarizing holograms have action to separate a polarized light component in the z-axis direction and a polarized light component orthogonal thereto into transmitted light and diffracted light. The polarizing and separating hologram 121 is installed so that its z-axis may have an inclination of 45 degrees to the principal direction of polarization of incident light, and the z-axis of the polarizing and separating hologram 122 is set in a direction orthogonal thereto. Therefore the individual polarizing holograms transform different polarized light components into different wave planes. Accordingly, in a photo detector 196, TE signal and TM signal are obtained in different polarized light components, so that the imbalance of the head amplifiers can be eliminated.
摘要翻译： 读取光磁盘的信息的光由检测器透镜104聚焦，并被放入偏光全息图121和由铌酸锂构成的偏光全息图122中。 这些偏振全息图具有将z轴方向的偏振光分量和与其正交的偏振光分量分离为透射光和衍射光的动作。 偏振和分离全息图121被安装成使得其z轴可以具有与入射光的主要偏振方向成45度的倾斜度，并且偏振和分离全息图122的z轴被设置在与其正交的方向上 。 因此，各个偏振全息图将不同的偏振光分量转换成不同的波面。 因此，在光检测器196中，以不同的偏振光分量获得TE信号和TM信号，从而可以消除头放大器的不平衡。
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47.发明授权Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same 有权光头装置，使用该装置的倾斜检测装置以及使用该装置的光信息处理装置公开(公告)号：US06418107B1
公开(公告)日：2002-07-09
申请号：US09641813
申请日：2000-08-17
IPC分类号： G11B700
CPC分类号： G11B7/1381 , G11B7/0943 , G11B7/0953 , G11B7/0956 , G11B7/131
摘要： An optical head device includes a light source for emitting at least one of a coherent beam and a quasi-monochromatic beam; a collection optical system for collecting the beam to an information memory medium having a track which has at least one mark and at least one space; a light detector having a plurality of detection areas for receiving the beam reflected by the information memory medium and outputting a signal in accordance with a light amount of the beam received; and a tracking error signal generator for receiving the signals output from the light detector and generating a tracking error signal based on the signals. The tracking error signal generator reduces a difference between a first signal amplitude and a second signal amplitude. The first signal amplitude is an absolute value of a difference between first and second signal levels. The second signal amplitude is an absolute value of a difference between the first and third signal levels. The first signal level is a value of the tracking error signal obtained when the beam emitted by the light source is radiated to a center of the track. The second and third signal levels are, respectively, a maximum value and a minimum value of the tracking error signal obtained when the information memory medium is scanned by the beam emitted by the light source in a direction perpendicular to the track.
摘要翻译： 光头装置包括用于发射相干光束和准单色光束中的至少一个的光源; 收集光学系统，用于将光束收集到具有至少一个标记和至少一个空间的轨道的信息存储介质; 具有多个检测区域的光检测器，用于接收由信息存储介质反射的光束并根据所接收的光束的光量输出信号; 以及跟踪误差信号发生器，用于接收从光检测器输出的信号，并基于该信号产生跟踪误差信号。 跟踪误差信号发生器减小第一信号幅度和第二信号幅度之间的差。 第一信号幅度是第一和第二信号电平之差的绝对值。 第二信号幅度是第一和第三信号电平之间的差的绝对值。 第一信号电平是当由光源发射的光束被辐射到轨道的中心时获得的跟踪误差信号的值。 第二和第三信号电平分别是当信息存储介质被光源在与光道垂直的方向上发射的光束扫描时获得的跟踪误差信号的最大值和最小值。
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48.发明授权Optical pickup head apparatus capable of suppressing crosstalk from adjacent tracks and in the recording line density direction 失效能够抑制来自相邻轨道和记录线密度方向的串扰的光拾取头装置
公开(公告)号：US5519685A
公开(公告)日：1996-05-21
申请号：US111959
申请日：1993-08-26
CPC分类号： G11B7/1353 , G11B11/10545 , G11B7/0903 , G11B7/125 , G11B7/131 , G11B7/1367
摘要： An optical pickup head apparatus comprises a first coherent light source for emitting a coherent light serving as a main beam, and a second coherent light source for emitting a coherent light having a polarized plane at a right angle to the polarized plane of the coherent light emitted from the first coherent light source. When the coherent light emitted from the second coherent light source is incident upon a phase plate, the phase plate yields a sub-beam presenting a distribution of light intensity having peak values at at least both sides of the center of the sub-beam on a plane vertical with respect to the optical axis of the coherent light. Focusing means overlaps the main beam emitted from the first coherent light source on the sub-beam emitted from the phase plate, causing the resulting overlapped beam to be focused on the information-recorded surface of an optical disk. When a focused beam as reflected from the information-recorded surface of the optical disk is incident upon polarized beam separating means, the polarized beam separating means yields the transmitted beam as divided into the main beam and the sub-beam. Optical detecting means individually detects and supplies the light intensities of the main beam and the sub-beam emitted from the polarized beam separating means.
摘要翻译： 光拾取头装置包括用于发射用作主光束的相干光的第一相干光源和用于发射具有与发射的相干光的偏振平面成直角的偏振面的相干光的第二相干光源 从第一个相干光源。 当从第二相干光源发射的相干光入射到相位板上时，相位板产生一个子光束，该子光束呈现在至少在子光束中心两侧的峰值的光强分布， 相对于相干光的光轴垂直。 聚焦装置与从相位板发射的子光束上的从第一相干光源发射的主光束重叠，导致所产生的重叠光束聚焦在光盘的信息记录表面上。 当从光盘的信息记录表面反射的聚焦光束入射到偏振光束分离装置时，偏振光束分离装置产生被分成主光束和子光束的透射光束。 光检测装置分别检测并提供从偏振光束分离装置发射的主光束和子光束的光强度。
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49.发明授权Converging element, optical head, and apparatus and method of optically recording and reproducing information 有权聚光元件，光学头，以及光学记录和再现信息的装置和方法公开(公告)号：US06873588B1
公开(公告)日：2005-03-29
申请号：US09700343
申请日：2000-03-14
申请人： Sadao Mizuno , Hiroaki Yamamoto , Hideki Hayashi , Jouji Anzai , Tomotada Kamei
发明人： Sadao Mizuno , Hiroaki Yamamoto , Hideki Hayashi , Jouji Anzai , Tomotada Kamei
IPC分类号： G11B7/1374 , G02B3/08 , G11B7/00 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1367 , G02B3/08 , G11B7/1275 , G11B7/1353 , G11B7/1356 , G11B7/1374 , G11B7/139 , G11B7/13922 , G11B7/1398 , G11B2007/0006
摘要： An optical head reproduces optical disks of different disk plate thickness thicknesses t1 (0.6 mm) or t2 (1.2 mm) by using light beams of two wavelengths and one object lens. An converging element comprises a central portion and outer portion, wherein the central portion has optimum design plate thickness of 0.6*t1 to t1 and the outer portion has optimum design plate thickness of 0.6 mm. By providing a step difference in the converging element, information can be recorded or reproduced for an information medium of disk plate thickness t1 and for an information medium of disk plate thickness t2, in a state having small side lobes. Alternatively, a step difference is provided in the object lens, and optical distance L2 from a second light source to a condensing optical system is set to 80 to 95% of optical distance L1 from a first light source to the condensing optical system. Alternatively, only light of first wavelength is shielded or diffracted in a ring-like shape.
摘要翻译： 光头通过使用两个波长的光束和一个物镜再现不同盘片厚度t1（0.6mm）或t2（1.2mm）的光盘。 会聚元件包括中心部分和外部部分，其中中心部分具有0.6 * t1至t1的最佳设计板厚度，并且外部部分具有0.6mm的最佳设计板厚度。 通过在会聚元件中提供阶梯差，可以在具有小的旁瓣的状态下，对于盘片厚度t1的信息介质和盘片厚度t2的信息介质来记录或再现信息。 或者，在物镜中设置阶梯差，从第二光源到聚光光学系统的光学距离L2设定为从第一光源到聚光光学系统的光学距离L1的80〜95％。 或者，只有第一波长的光被屏蔽或衍射成环状。
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50.发明授权Converging element, optical head, and apparatus and method of optically recording and reproducing information 有权聚光元件，光学头，以及光学记录和再现信息的装置和方法公开(公告)号：US06920102B2
公开(公告)日：2005-07-19
申请号：US10694899
申请日：2003-10-29
申请人： Sadao Mizuno , Hiroaki Yamamoto , Hideki Hayashi , Jouji Anzai , Tomotada Kamei
发明人： Sadao Mizuno , Hiroaki Yamamoto , Hideki Hayashi , Jouji Anzai , Tomotada Kamei
IPC分类号： G11B7/1374 , G02B3/08 , G11B7/00 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1367 , G02B3/08 , G11B7/1275 , G11B7/1353 , G11B7/1356 , G11B7/1374 , G11B7/139 , G11B7/13922 , G11B7/1398 , G11B2007/0006
摘要： An optical head reproduces optical disks of different disk plate thickness t1 (0.6 mm) or t2 (1.2 mm) by using light beams of two wavelengths and one object lens. An converging element comprises a central portion and outer portion, wherein the central portion has optimum design plate thickness of 0.6*t1 to t1 and the outer portion has optimum design plate thickness of 0.6 mm. By providing a step difference in the converging element, information can be recorded or reproduced for an information medium of disk plate thickness t1 and for an information medium of disk plate thickness t2, in a state having small side lobes. Alternatively, a step difference is provided in the object lens, and optical distance L2 from a second light source to a condensing optical system is set to 80 to 95% of optical distance L1 from a first light source to the condensing optical system. Alternatively, only light of first wavelength is shielded or diffracted in a ring-like shape.
摘要翻译： 光头通过使用两个波长的光束和一个物镜来再现不同盘片厚度t 1（0.6mm）或t 2（1.2mm）的光盘。 收敛元件包括中心部分和外部部分，其中中心部分具有0.6 * t 1至t 1的最佳设计板厚度，并且外部部分具有0.6mm的最佳设计板厚度。 通过在会聚元件中提供阶梯差，可以在具有小的旁瓣的状态下，对于盘片厚度t 1的信息介质和盘片厚度t 2的信息介质来记录或再现信息。 或者，在物镜中设置阶梯差，从第二光源到聚光光学系统的光距离L 2设定为从第一光源到聚光光学系统的光学距离L 1的80〜95％。 或者，只有第一波长的光被屏蔽或衍射成环状。
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