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公开(公告)号：EP1524653A3
公开(公告)日：2008-08-27
申请号：EP04024402.2
申请日：2004-10-13
发明人： Arai, Akihiro
CPC分类号： G11B7/1381 , G11B7/007 , G11B7/09 , G11B7/0956 , G11B7/131 , G11B7/1353
摘要： A tilt sensor includes a photodetector having a photosensitive plane (6) and detecting a light beam in multiple areas and outputting detection signals representing its intensities and a tilt detector for generating a tilt error signal, including information about the tilt of a disk, based on the detection signals. The light beam forms a beam spot (10) on the photosensitive plane. The beam spot includes a + first-order light area (10b) in which zero-order and + first-order light rays, diffracted by a track on the disk, are superposed, - first-order light area (10c) in which zero-order and - first-order light rays are superposed, and a zero-order light area (10a) which is sandwiched between the + first-order and - first-order light areas, includes neither the + first-order nor - first-order light ray, but includes a zero-order light ray. The photodetector generates the detection signals except for light entering an opaque area (11) provided for at least part of the zero-order light area.
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2.发明公开Beam shaping lens, lens part, mounting plate, optical head, optical information recording and reproducing apparatus, computer, image recording and reproducing apparatus, image reproducing apparatus, server and car navigation system 有权光束整形透镜，透镜安装板，光学头，光学信息记录和再现装置，电脑，视频记录和再现装置，图像再现装置，服务器和汽车导航系统
公开(公告)号：EP1592001A3
公开(公告)日：2006-11-02
申请号：EP05009136.2
申请日：2005-04-26
CPC分类号： G11B7/1398 , G11B7/1378 , G11B7/13922 , G11B7/22 , G11B2007/13727
摘要： A beam shaping lens of shaping an incident beam having an elliptic cross section into an outgoing beam having a substantially circular cross section comprises a first plane (22) which is a cylindrical surface having a generating line curving to form a non-circular cylindrical surface as an incidence side of the incident beam and a second plane (20) which is a circular cylindrical surface as an outgoing side of the outgoing beam, wherein a distance between both ends of the generating line of the circular cylindrical surface is larger than a distance between both ends of the generating line of the non-circular cylindrical surface.
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公开(公告)号：EP1524653A2
公开(公告)日：2005-04-20
申请号：EP04024402.2
申请日：2004-10-13
发明人： Arai, Akihiro
IPC分类号： G11B7/095
CPC分类号： G11B7/1381 , G11B7/007 , G11B7/09 , G11B7/0956 , G11B7/131 , G11B7/1353
摘要： A tilt sensor includes a photodetector having a photosensitive plane (6) and detecting a light beam in multiple areas and outputting detection signals representing its intensities and a tilt detector for generating a tilt error signal, including information about the tilt of a disk, based on the detection signals. The light beam forms a beam spot (10) on the photosensitive plane. The beam spot includes a + first-order light area (10b) in which zero-order and + first-order light rays, diffracted by a track on the disk, are superposed, - first-order light area (10c) in which zero-order and - first-order light rays are superposed, and a zero-order light area (10a) which is sandwiched between the + first-order and - first-order light areas, includes neither the + first-order nor - first-order light ray, but includes a zero-order light ray. The photodetector generates the detection signals except for light entering an opaque area (11) provided for at least part of the zero-order light area.
摘要翻译： 倾斜传感器包括具有光敏平面（6）并且检测多个区域中的光束并且输出表示其强度的检测信号的光电检测器和用于产生包括关于盘的倾斜的信息的倾斜误差信号的倾斜检测器，基于 检测信号。 光束在感光平面上形成束斑（10）。 光束点包括+一级光区域（10b），其中由盘上的光道衍射的零级和+一级光线叠加在其中零点的一级光区域（10c） - 一级和一级光线被叠加，并且夹在+一级和一级光区域之间的零级光区域（10a）既不包括+一阶也不是第一级光区域， 但是包括零级光线。 光检测器产生除了进入为零级光区域的至少一部分设置的不透明区域（11）的光之外的检测信号。
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4.发明公开Optical pick-up head, optical information apparatus, and optical information reproducing method 审中-公开Optischer Abtastkopf，optischesInformationsgerät，und optisches Informationswiedergabeverfahren
公开(公告)号：EP1391884A2
公开(公告)日：2004-02-25
申请号：EP03019202.5
申请日：2003-08-25
发明人： Kadowaki, Shin-ichi , Sano, Kousei , Arai, Akihiro , Yasuda, Katsuhiko , Kamei, Tomotada , Yamamoto, Hiroaki , Yamasaki, Fumitomo
IPC分类号： G11B7/09
CPC分类号： G11B7/1381 , G11B7/0901 , G11B7/0903 , G11B7/0941 , G11B7/0943 , G11B7/0948 , G11B7/131 , G11B7/133 , G11B7/1353 , G11B7/13927 , G11B2007/0013
摘要： An optical information apparatus of the present invention includes:
an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.摘要翻译： 本发明的光信息设备包括：光拾取头，包括：光源; 衍射单位; 冷凝单元; 分束器 光电检测器 和跟踪误差信号发生器。 光记录介质具有基本上以恒定间距布置的轨道。 平均音高是tp。 当主光束被放置在轨道上时，第一子光束和第二子光束被放置在轨道之间。 跟踪误差信号发生器对从接收主波束的光接收部分输出的信号执行差分运算，产生第一推挽信号，对从光接收部分输出的信号执行差分运算 接收第一子光束和第二子光束以产生第二推挽信号，并且相对于第一推挽信号和第二推挽信号执行差分算术运算以产生跟踪误差信号， 当在与光记录介质的轨迹正交的方向上扫描光束时，以间距tp获得的第一推挽信号的幅度波动的情况。
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公开(公告)号：EP1632936A3
公开(公告)日：2007-10-10
申请号：EP05014799.0
申请日：2005-07-07
CPC分类号： G11B7/0956 , G11B7/131 , G11B7/133
摘要： A light sensing area of a light sensing element 7 is comprised of regions 13, 7a to 7d. A tilt detector 8 carries out a tilt detection in accordance with a first difference signal, which is a difference signal between a signal obtained from the region 7a and a signal obtained from the region 7b, and a second difference signal, which is difference signal between a signal obtained from the region 7c and a signal obtained from the region 7d.
Accordingly, an optical-disk tilt detecting signal having a little influence of defocusing can be obtained even at boundaries between recorded information tracks and non-recorded information tracks.-
6.发明公开Optical pick-up head, optical information apparatus, and optical information reproducing method 审中-公开光学拾取器，光信息装置，以及光信息再生方法，
公开(公告)号：EP1391884A3
公开(公告)日：2007-04-18
申请号：EP03019202.5
申请日：2003-08-25
发明人： Kadowaki, Shin-ichi , Sano, Kousei , Arai, Akihiro , Yasuda, Katsuhiko , Kamei, Tomotada , Yamamoto, Hiroaki , Yamasaki, Fumitomo
IPC分类号： G11B7/09
CPC分类号： G11B7/1381 , G11B7/0901 , G11B7/0903 , G11B7/0941 , G11B7/0943 , G11B7/0948 , G11B7/131 , G11B7/133 , G11B7/1353 , G11B7/13927 , G11B2007/0013
摘要： An optical information apparatus of the present invention includes:
an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.-
7.发明公开An optical head, an optical disk device and an integrated circuit 有权Optischer Kopf，optische Plattenvorrichtung und integrierte Schaltungsanordnung
公开(公告)号：EP1632936A2
公开(公告)日：2006-03-08
申请号：EP05014799.0
申请日：2005-07-07
IPC分类号： G11B7/00
CPC分类号： G11B7/0956 , G11B7/131 , G11B7/133
摘要： A light sensing area of a light sensing element 7 is comprised of regions 13, 7a to 7d. A tilt detector 8 carries out a tilt detection in accordance with a first difference signal, which is a difference signal between a signal obtained from the region 7a and a signal obtained from the region 7b, and a second difference signal, which is difference signal between a signal obtained from the region 7c and a signal obtained from the region 7d.
Accordingly, an optical-disk tilt detecting signal having a little influence of defocusing can be obtained even at boundaries between recorded information tracks and non-recorded information tracks.摘要翻译： 感光元件7的感光区域由区域13,7a至7d组成。 倾斜检测器8根据作为从区域7a获得的信号与从区域7b获得的信号之间的差分信号的第一差分信号和第二差分信号进行倾斜检测，第二差信号是 从区域7c获得的信号和从区域7d获得的信号。 因此，即使在记录的信息轨道和未记录的信息轨道之间的边界处，也可以获得具有散焦影响小的光盘倾斜检测信号。
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8.发明公开Beam shaping lens, lens part, mounting plate, optical head, optical information recording and reproducing apparatus, computer, image recording and reproducing apparatus, image reproducing apparatus, server and car navigation system 有权光束整形透镜，透镜安装板，光学头，光学信息记录和再现装置，电脑，视频记录和再现装置，图像再现装置，服务器和汽车导航系统
公开(公告)号：EP1592001A2
公开(公告)日：2005-11-02
申请号：EP05009136.2
申请日：2005-04-26
CPC分类号： G11B7/1398 , G11B7/1378 , G11B7/13922 , G11B7/22 , G11B2007/13727
摘要： A beam shaping lens of shaping an incident beam having an elliptic cross section into an outgoing beam having a substantially circular cross section comprises a first plane (22) which is a cylindrical surface having a generating line curving to form a non-circular cylindrical surface as an incidence side of the incident beam and a second plane (20) which is a circular cylindrical surface as an outgoing side of the outgoing beam, wherein a distance between both ends of the generating line of the circular cylindrical surface is larger than a distance between both ends of the generating line of the non-circular cylindrical surface.
摘要翻译： 具有规划，以椭圆形横截面的入射光束的整形的光束整形透镜为具有大致圆形的横截面的出射光束包括第一（22），所有这些是具有母线弯曲，以形成一个非圆形的圆柱形表面为圆柱面 计划到入射入射光束和第二（20），所有这些是一个圆柱面为出射光束的出射侧的侧面，worin圆筒面的母线的两端之间的距离比之间的距离大 非圆形筒状面的母线的两端。
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9.发明公开Optical element, method of manufacturing the optical element and optical head using the optical element 审中-公开该光学元件的光学元件的制造方法和该光学头中使用方向
公开(公告)号：EP1304586A3
公开(公告)日：2004-01-07
申请号：EP02023289.8
申请日：2002-10-17
CPC分类号： G02B5/3033 , G02B27/1073 , G02B27/1086 , G02B27/283 , G11B7/1353 , G11B7/1356 , G11B7/1381 , G11B11/10545
摘要： An optical element is composed of a first substrate (11) and a second substrate (12) that are joined to each other. The first substrate (11) is composed of a plurality of transparent base materials joined to each other through a first joint surface (11a) on which an optical film is formed. The second substrate (12) is composed of a plurality of transparent base materials joined to each other through at least two second joint surfaces (12a) to (12c) parallel to each other. On each of the second joint surfaces, an optical film is formed. One part of light incident on the first substrate (11) is reflected from the first joint surface (11a) to be incident on the second substrate(12), and at least one part thereof is reflected from at least one of the second joint surfaces. A virtual plane including an incident light axis and a reflected light axis on the first joint surface (11a) and a virtual plane including incident light axes and reflected light axes on the respective second joint surfaces (12a) to(12c) form an angle of substantially 45 degrees. This allows an optical element to be manufactured at a reduced cost, in which no diffraction grating is provided on an optical path from a light source to an optical disk, so that a high light utilization efficiency can be attained, and the degradation in signal quality can be prevented.
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10.发明公开Optical element, method of manufacturing the optical element and optical head using the optical element 审中-公开该光学元件的光学元件的制造方法和该光学头中使用方向
公开(公告)号：EP1304586A2
公开(公告)日：2003-04-23
申请号：EP02023289.8
申请日：2002-10-17
CPC分类号： G02B5/3033 , G02B27/1073 , G02B27/1086 , G02B27/283 , G11B7/1353 , G11B7/1356 , G11B7/1381 , G11B11/10545
摘要： An optical element is composed of a first substrate (11) and a second substrate (12) that are joined to each other. The first substrate (11) is composed of a plurality of transparent base materials joined to each other through a first joint surface (11a) on which an optical film is formed. The second substrate (12) is composed of a plurality of transparent base materials joined to each other through at least two second joint surfaces (12a) to (12c) parallel to each other. On each of the second joint surfaces, an optical film is formed. One part of light incident on the first substrate (11) is reflected from the first joint surface (11a) to be incident on the second substrate(12), and at least one part thereof is reflected from at least one of the second joint surfaces. A virtual plane including an incident light axis and a reflected light axis on the first joint surface (11a) and a virtual plane including incident light axes and reflected light axes on the respective second joint surfaces (12a) to(12c) form an angle of substantially 45 degrees. This allows an optical element to be manufactured at a reduced cost, in which no diffraction grating is provided on an optical path from a light source to an optical disk, so that a high light utilization efficiency can be attained, and the degradation in signal quality can be prevented.
摘要翻译： 底物的光学元件由第一衬底（11）和第二（12）的没有被接合到海誓山盟。 第一衬底（11）是由通过在其上的光学片形成第一接合表面（11A）彼此连接的透明基体材料中的多个。 所述第二基片（12）是由通过至少两个第二接合表面（12A）至（12c）的平行于海誓山盟彼此接合透明基体材料中的多个。 每个光学其中电影是形成在第二关节表面。 光入射在第一基板（11）的一部分从所述第一接合表面（11A）反射入射在所述第二基片（12），和至少一个其一部分从所述第二接合表面中的至少一个反射 ， 虚拟平面包含入射光轴和所述第一接合面上的反射光轴线（11a）和一个虚拟平面包含入射光轴和以角度反射的respectivement第二接合表面（12A）至（12c）的形式在光轴 基本上为45度。 这允许以降低的成本，其中在光盘被设置在在光路中的衍射光栅将来自光源将要制造的光学元件，所以也具有高的光利用效率可实现，而在信号质量的劣化 可以预防的。
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