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公开(公告)号：US5455712A
公开(公告)日：1995-10-03
申请号：US237561
申请日：1994-05-03
CPC分类号： G11B7/1353 , G02B27/283 , G02B5/1833 , G02B5/3083 , G11B11/10515 , G11B11/10545
摘要： An optical element includes a crystal of Li.sub.X Ta.sub.1-X NbO.sub.3 which has one of an x-surface and a y-surface, where X denotes an atomic fraction and 0.ltoreq.X.ltoreq.1. Proton-exchanged layers periodically extend on one of the x-surface and the y-surface of the crystal. Grooves extend in said one of the x-surface and the y-surface of the crystal, and have bottoms which are defined by surfaces of the proton-exchanged layers. Ordinary light which has passed through the proton-exchanged layers and the grooves is out of phase with respect to ordinary light which has passed through a region of the crystal outside the proton-exchanged layers and the grooves by a quantity of (2n+1).pi., where n denotes an arbitrary integer. Extraordinary light which has passed through the proton-exchanged layers and the grooves is out of phase with respect to extraordinary light which has passed through a region of the crystal outside the proton-exchanged layers and the grooves by a quantity of 2m.pi., where m denotes an arbitrary integer.
摘要翻译： 光学元件包括具有x表面和y表面之一的LiXTa1-XNbO3的晶体，其中X表示原子分数，0表示X = 1。 质子交换层周期性延伸在晶体的x面和y表面之一上。 沟槽在晶体的x表面和y表面中的所述一个中延伸，并且具有由质子交换层的表面限定的底部。 通过质子交换层和槽的普通光相对于通过质子交换层外侧的晶体区域和沟槽的一定数量的（2n + 1）的普通光而异相， pi，其中n表示任意整数。 已经通过质子交换层和沟槽的非凡光相对于通过质子交换层外面的晶体的一部分和沟槽的一部分2μm的非均匀的光而异相，其中m 表示任意整数。
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公开(公告)号：US5367403A
公开(公告)日：1994-11-22
申请号：US43228
申请日：1993-04-06
IPC分类号： G02B5/18 , G02B5/30 , G02B27/28 , G11B7/135 , G11B11/105
CPC分类号： G11B7/1353 , G02B27/283 , G02B5/1833 , G02B5/3083 , G11B11/10515 , G11B11/10545
摘要： An optical element includes a crystal of LiTa.sub.X Nb.sub.1-X O.sub.3 which has one of an x-surface and a y-surface, where X denotes an atomic fraction and 0.ltoreq.X.ltoreq.1. Proton-exchanged layers periodically extend on one of the x-surface and the y-surface of the crystal. Grooves extend in said one of the x-surface and the y-surface of the crystal, and have bottoms which are defined by surfaces of the proton-exchanged layers. Ordinary light which has passed through the proton-exchanged layers and the grooves is out of phase with respect to ordinary light which has passed through a region of the crystal outside the proton-exchanged layers and the grooves by a quantity of (2n+1).pi., where n denotes an arbitrary integer. Extraordinary light which has passed through the proton-exchanged layers and the grooves is out of phase with respect to extraordinary light which has passed through a region of the crystal outside the proton-exchanged layers and the grooves by a quantity of 2 m.pi., where m denotes an arbitrary integer.
摘要翻译： 光学元件包括具有x表面和y表面之一的LiTaXNb1-XO3的晶体，其中X表示原子分数，0表示X <= 1。 质子交换层周期性延伸在晶体的x面和y表面之一上。 沟槽在晶体的x表面和y表面中的所述一个中延伸，并且具有由质子交换层的表面限定的底部。 通过质子交换层和槽的普通光相对于通过质子交换层外侧的晶体区域和沟槽的一定数量的（2n + 1）的普通光而异相， pi，其中n表示任意整数。 已经通过质子交换层和沟槽的非凡光相对于通过质子交换层外面的晶体区域和沟槽的一个2μmp的非常光而异相，其中 m表示任意整数。
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3.发明授权Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method 有权光学元件，光学头，光学记录再现装置和光学记录/再现方法公开(公告)号：US07580327B2
公开(公告)日：2009-08-25
申请号：US12002380
申请日：2007-12-17
申请人： Hidenori Wada , Tetsuo Saimi , Daisuke Ogata , Seiji Nishino , Hiroaki Yamamoto , Shin-ichi Kadowaki , Yoshiaki Komma
发明人： Hidenori Wada , Tetsuo Saimi , Daisuke Ogata , Seiji Nishino , Hiroaki Yamamoto , Shin-ichi Kadowaki , Yoshiaki Komma
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G02F2203/18 , G11B7/0948 , G11B7/1369 , G11B7/13927 , G11B2007/0013
摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.
摘要翻译： 本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。 本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。 光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。 通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。
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公开(公告)号：US07352664B2
公开(公告)日：2008-04-01
申请号：US11031634
申请日：2005-01-07
申请人： Hidenori Wada , Tetsuo Saimi , Daisuke Ogata , Seiji Nishino , Hiroaki Yamamoto , Shin-ichi Kadowaki , Yoshiaki Komma
发明人： Hidenori Wada , Tetsuo Saimi , Daisuke Ogata , Seiji Nishino , Hiroaki Yamamoto , Shin-ichi Kadowaki , Yoshiaki Komma
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G02F2203/18 , G11B7/0948 , G11B7/1369 , G11B7/13927 , G11B2007/0013
摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.
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5.发明授权公开(公告)号：US07313080B2
公开(公告)日：2007-12-25
申请号：US10510400
申请日：2003-04-07
IPC分类号： G11B7/24
CPC分类号： G11B7/243 , B82Y10/00 , B82Y30/00 , G11B7/00455 , G11B7/24038 , G11B7/251 , G11B7/2533 , G11B7/2534 , G11B7/2538 , G11B7/2542 , G11B7/257 , G11B7/258 , G11B7/266 , G11B2007/24304 , G11B2007/24306 , G11B2007/2431 , G11B2007/24312 , G11B2007/2432 , G11B2007/24324
摘要： An information recording medium has a recording portion where three-dimensional information can be recorded. The recording portion includes at least one particle-containing layer (recording layer or a recording auxiliary layer) containing particles absorbing at least a part of light having a predetermined wavelength and substantially transparent to a recording light and a reproducing light having a wavelength longer than the predetermined wavelength and a particle holding material substantially transparent to the recording and reproducing lights. The mean particle size of the particles is preferably shorter than the wavelengths of the recording and reproducing lights.
摘要翻译： 信息记录介质具有记录三维信息的记录部分。 记录部分包括至少一个含有颗粒的层（记录层或记录辅助层），其含有吸收具有预定波长的至少一部分光并且对记录光基本透明的颗粒和具有比该 预定波长和对记录和再现光基本上透明的颗粒保持材料。 颗粒的平均粒度优选比记录和再现光的波长短。
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6.发明申请Information recording medium and its manufacturing method,recording/preproducing method, and optical information recording/reproducing device 审中-公开信息记录介质及其制造方法，记录/制作方法以及光信息记录/再现装置公开(公告)号：US20060246375A1
公开(公告)日：2006-11-02
申请号：US10558122
申请日：2004-05-27
申请人： Teruhiro Shiono , Hiroaki Yamamoto , Seiji Nishino , Tatsuo Ito
发明人： Teruhiro Shiono , Hiroaki Yamamoto , Seiji Nishino , Tatsuo Ito
IPC分类号： G11B7/24
CPC分类号： G11B7/245 , B82Y10/00 , B82Y30/00 , G11B7/00455 , G11B7/246 , G11B7/25 , G11B7/251 , G11B7/2538 , G11B2007/0013 , Y10T428/21
摘要： An information recording medium is provided that includes a recording portion (3), which is irradiated with a recording light or a reproducing light so that information is recorded or reproduced thereto or therefrom. The recording portion (3) contains a first phosphor and a photon-mode photosensitive material. The first phosphor has a property of absorbing a first light having a wavelength of λ1/n and then emitting a second light having a wavelength longer than that of the first light, where λ1 is a wavelength of the recording light. The photosensitive material absorbs the second light and then exhibits a change in an optical constant thereof. A n-photon absorption sensitivity of the first phosphor with respect to the recording light is greater than a n-photon absorption sensitivity of the photosensitive material with respect to the recording light, where n is an integer not less than 2.
摘要翻译： 提供了一种信息记录介质，其包括用记录光或再现光照射以便信息被记录或再现的记录部分（3）。 记录部分（3）包含第一荧光体和光子模式感光材料。 第一荧光体具有吸收波长为λ1/ N / n的第一光的性质，然后发射具有比第一光的波长更长的波长的第二光，其中λ1 < / SUB>是记录光的波长。 感光材料吸收第二光，然后呈现其光学常数的变化。 第一荧光体相对于记录光的n光子吸收灵敏度大于感光材料相对于记录光的n光子吸收灵敏度，其中n是不小于2的整数。
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7.发明申请Optical element, optical head, optical recording reproducing apparatus and optical recording/ reproducing method 审中-公开光学元件，光学头，光学记录再现装置和光学记录/再现方法公开(公告)号：US20060028927A1
公开(公告)日：2006-02-09
申请号：US11238272
申请日：2005-09-29
申请人： Hidenori Wada , Tetsuo Saimi , Daisuke Ogata , Seiji Nishino , Hiroaki Yamamoto , Shin-ichi Kadowaki , Yoshiaki Komma
发明人： Hidenori Wada , Tetsuo Saimi , Daisuke Ogata , Seiji Nishino , Hiroaki Yamamoto , Shin-ichi Kadowaki , Yoshiaki Komma
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G02F2203/18 , G11B7/0948 , G11B7/1369 , G11B7/13927 , G11B2007/0013
摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.
摘要翻译： 本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。 本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。 光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。 通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。
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公开(公告)号：US06400671B2
公开(公告)日：2002-06-04
申请号：US09897811
申请日：2001-07-02
申请人： Hideki Hayashi , Tatsuo Ito , Yoshiaki Komma , Hiroaki Yamamoto , Seiji Nishino
发明人： Hideki Hayashi , Tatsuo Ito , Yoshiaki Komma , Hiroaki Yamamoto , Seiji Nishino
IPC分类号： G11B700
CPC分类号： G11B7/131 , G11B7/0912 , G11B7/0943 , G11B7/133 , G11B7/1353 , G11B2007/0006
摘要： In a photodetector, the minimum size of the photodetection area for detecting a focus error signal from a light beam on the inner radius side of a hologram is made smaller than the minimum diameter of diffracted light beam spots (30, 31) for recording and reproduction, and when a CD is reproduced, a light beam close to the optical axis is made to significantly contribute to the focus error signal and the minimum size of the photodetection area for detecting the focus error signal from a light beam from the peripheral side of the hologram is made larger than the minimum diameter of diffracted light beam spots (130, 131) for recording and reproduction, whereby the focus error signal is made equal to the normal focus error signal when a DVD is reproduced, so that the focus offset variation caused when the base material thickness varies can be reduced.
摘要翻译： 在光电检测器中，将用于检测来自全息图的内半径侧上的光束的聚焦误差信号的光检测区域的最小尺寸设定为小于用于记录和再现的衍射光束点（30,31）的最小直径 ，并且当再现CD时，使靠近光轴的光束显着有助于聚焦误差信号和用于从来自所述光轴的外围侧的光束检测聚焦误差信号的光检测区域的最小尺寸 使全息图大于用于记录和再现的衍射光束点（130,131）的最小直径，由此当再现DVD时使聚焦误差信号等于正常聚焦误差信号，使得聚焦偏移变化引起 当基材厚度变化时可以减少。
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9.发明授权Optical head device, optical information apparatus, and method for detecting focus error signal 失效光头装置，光信息装置以及聚焦误差信号检测方法公开(公告)号：US06292441B1
公开(公告)日：2001-09-18
申请号：US09061822
申请日：1998-04-16
申请人： Hiroaki Yamamoto , Daisuke Ogata , Ken'ichi Kasazumi , Seiji Nishino , Hidenori Wada , Sadao Mizuno
发明人： Hiroaki Yamamoto , Daisuke Ogata , Ken'ichi Kasazumi , Seiji Nishino , Hidenori Wada , Sadao Mizuno
IPC分类号： G11B700
CPC分类号： G11B7/131 , G11B7/0908 , G11B7/094 , G11B7/1353 , G11B7/1381
摘要： An optical head device includes a light source for emitting a light beam having a predetermined wavelength, an optical system for converging the light beam emitted from the light source on an information medium, and a light detector for receiving the light beam reflected from the information medium and detecting a focus error signal based on the received light beam. The light detector includes a plurality of pairs of photodetectors. The light detector generates the focus error signal based on a differential signal generated by each pair of the plurality of pairs of photodetectors. The plurality of pairs of photodetectors are arranged so that a fluctuation in the differential signal generated by at least one of the pairs of the plurality of pairs of photodetectors is cancelled by a fluctuation in the differential signal generated by at least another of the pairs of the plurality of pairs of photodetectors.
摘要翻译： 光头装置包括用于发射具有预定波长的光束的光源，用于将从光源发射的光束会聚在信息介质上的光学系统，以及用于接收从信息介质反射的光束的光检测器 以及基于所接收的光束检测聚焦误差信号。 光检测器包括多对光电检测器。 光检测器基于由每对多个光电检测器生成的差分信号产生聚焦误差信号。 多对光检测器被布置成使得由多对光检测器中的至少一对成对的光检测器产生的差分信号的波动被由至少另一对成对的光检测器产生的差分信号的波动所抵消 多对光电探测器。
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公开(公告)号：US6111842A
公开(公告)日：2000-08-29
申请号：US15367
申请日：1998-01-29
CPC分类号： G11B7/1353 , G11B7/139 , G11B7/0901 , G11B7/0909
摘要： An optical head has a light source for emitting a light beam; optical device for condensing the emitted light beam onto an information recording medium and condensing light reflected from the information recording medium; and aperture limitation device for, of the condensed reflected light, causing light of a predetermined outer region to exit in a position different from a position where light of an inner region exits, wherein the light of the outer region and the light of the inner region caused to exit by the aperture limitation devices are separated to different places.
摘要翻译： 光头具有用于发射光束的光源; 光学装置，用于将发射的光束聚集到信息记录介质上并聚集从信息记录介质反射的光; 以及用于聚光反射光的孔径限制装置，使得预定外部区域的光在与内部区域的光的出射位置不同的位置处离开，其中外部区域的光和内部区域的光 导致由孔径限制装置退出分离到不同的地方。
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