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1. 发明授权

US07450308B2 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
标题翻译：光束成形透镜，透镜部件，安装板，光学头，光学信息记录和再现装置，计算机，图像记录和再现装置，图像再现装置，服务器和汽车导航系统
公开(公告)号：US07450308B2
公开(公告)日：2008-11-11
申请号：US11114775
申请日：2005-04-26
申请人： Toshiyasu Tanaka , Yoshiaki Komma , Kousei Sano , Akihiro Arai
发明人： Toshiyasu Tanaka , Yoshiaki Komma , Kousei Sano , Akihiro Arai
IPC分类号： G02B27/10 , G02B7/02
CPC分类号： G11B7/1398 , G11B7/1378 , G11B7/13922 , G11B7/22 , G11B2007/13727
摘要： A beam shaping lens for shaping an incident beam having an elliptic cross section into an outgoing beam having a substantially circular cross section includes a first plane 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 which is a circular cylindrical surface as an outgoing side of the outgoing beam. The distance between both ends of the generating line of the circular cylindrical surface is larger than the distance between both ends of the generating line of the non-circular cylindrical surface.
摘要翻译：用于将具有椭圆形截面的入射光束成形为具有基本圆形横截面的输出光束的光束整形透镜包括：第一平面，其是具有弯曲形成非圆形圆柱形表面的发生线弯曲的圆柱形表面，作为入射侧的入射光束和作为出射光束的出射侧的圆柱形表面的第二平面。圆筒形表面的生成线的两端之间的距离大于非圆柱形表面的生成线的两端之间的距离。

2. 发明申请

US20050237639A1 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
标题翻译：光束成形透镜，透镜部件，安装板，光学头，光学信息记录和再现装置，计算机，图像记录和再现装置，图像再现装置，服务器和汽车导航系统
公开(公告)号：US20050237639A1
公开(公告)日：2005-10-27
申请号：US11114775
申请日：2005-04-26
申请人： Toshiyasu Tanaka , Yoshiaki Komma , Kousei Sano , Akihiro Arai
发明人： Toshiyasu Tanaka , Yoshiaki Komma , Kousei Sano , Akihiro Arai
IPC分类号： G02B3/00 , G02B3/06 , G02B5/04 , G02B7/02 , G11B7/135 , G11B7/22
CPC分类号： G11B7/1398 , G11B7/1378 , G11B7/13922 , G11B7/22 , G11B2007/13727
摘要： A beam shaping lens for shaping an incident beam having an elliptic cross section into an outgoing beam having a substantially circular cross section includes a first plane 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 which is a circular cylindrical surface as an outgoing side of the outgoing beam. The distance between both ends of the generating line of the circular cylindrical surface is larger than the distance between both ends of the generating line of the non-circular cylindrical surface.
摘要翻译：用于将具有椭圆形截面的入射光束成形为具有基本圆形横截面的输出光束的光束整形透镜包括：第一平面，其是具有弯曲形成非圆形圆柱形表面的发生线弯曲的圆柱形表面，作为入射侧的入射光束和作为出射光束的出射侧的圆柱形表面的第二平面。圆筒形表面的生成线的两端之间的距离大于非圆柱形表面的生成线的两端之间的距离。

3. 发明授权

US08068403B2 Optical head 有权
标题翻译：光头
公开(公告)号：US08068403B2
公开(公告)日：2011-11-29
申请号：US12090144
申请日：2006-10-13
申请人： Takayuki Nagata , Joji Anzai , Hideki Aikoh , Eishin Mori , Kousei Sano , Yoshiaki Komma , Akihiro Arai
发明人： Takayuki Nagata , Joji Anzai , Hideki Aikoh , Eishin Mori , Kousei Sano , Yoshiaki Komma , Akihiro Arai
IPC分类号： G11B7/00
CPC分类号： G11B7/133 , G11B7/0908 , G11B7/1381 , G11B2007/0013
摘要： To provide an optical head to produce good servo and read signals by reducing the influence of interference by light reflected from a non-read layer of a multilayer optical disc.The head includes: a first optical system for converging light from a light source on a first or second storage layer; a second optical system for receiving and transmitting light reflected from the first layer and stray light reflected from the second layer when the light is converged on the first layer; a photodetector; and a calculator. The photosensitive areas of the photodetector output signals representing intensities of the light incident there through the second system. The reflected and stray light incident on the second system interfere with each other, and the first and second groups of areas are arranged so as to be equally affected by a variation in intensity caused by the interference. The calculator calculates the difference between sum of a first group of signals supplied from a first group of areas and that of a second group of signals supplied from a second group of areas, thereby generating a focus error signal.
摘要翻译：通过减少由多层光盘的非读取层反射的光的干扰的影响来提供光学头来产生良好的伺服和读取信号。头部包括：第一光学系统，用于将来自光源的光聚焦在第一或第二存储层上; 第二光学系统，用于当所述光会聚在所述第一层上时，接收和发射从所述第一层反射的光和从所述第二层反射的杂散光; 光检测器; 和一个计算器。光电检测器的光敏区域输出表示通过第二系统入射到那里的光的强度的信号。入射在第二系统上的反射和杂散光彼此干涉，并且第一和第二组区域被布置成等同地受到由干涉引起的强度变化的影响。计算器计算从第一组区域提供的第一组信号和从第二组区域提供的第二组信号的第一组信号的和之间的差，从而产生聚焦误差信号。

4. 发明申请

US20090257340A1 OPTICAL HEAD 有权
标题翻译：光学头
公开(公告)号：US20090257340A1
公开(公告)日：2009-10-15
申请号：US12090144
申请日：2006-10-13
申请人： Takayuki Nagata , Joji Anzai , Hideki Aikoh , Eishin Mori , Kousei Sano , Yoshiaki Komma , Akihiro Arai
发明人： Takayuki Nagata , Joji Anzai , Hideki Aikoh , Eishin Mori , Kousei Sano , Yoshiaki Komma , Akihiro Arai
IPC分类号： G11B7/00
CPC分类号： G11B7/133 , G11B7/0908 , G11B7/1381 , G11B2007/0013
摘要： To provide an optical head to produce good servo and read signals by reducing the influence of interference by light reflected from a non-read layer of a multilayer optical disc.The head includes: a first optical system for converging light from a light source on a first or second storage layer; a second optical system for receiving and transmitting light reflected from the first layer and stray light reflected from the second layer when the light is converged on the first layer; a photodetector; and a calculator. The photosensitive areas of the photodetector output signals representing intensities of the light incident there through the second system. The reflected and stray light incident on the second system interfere with each other, and the first and second groups of areas are arranged so as to be equally affected by a variation in intensity caused by the interference. The calculator calculates the difference between sum of a first group of signals supplied from a first group of areas and that of a second group of signals supplied from a second group of areas, thereby generating a focus error signal.
摘要翻译：通过减少由多层光盘的非读取层反射的光的干扰的影响来提供光学头来产生良好的伺服和读取信号。头部包括：第一光学系统，用于将来自光源的光聚焦在第一或第二存储层上; 第二光学系统，用于当所述光会聚在所述第一层上时，接收和发射从所述第一层反射的光和从所述第二层反射的杂散光; 光检测器; 和一个计算器。光电检测器的光敏区域输出表示通过第二系统入射到那里的光的强度的信号。入射在第二系统上的反射和杂散光彼此干涉，并且第一和第二组区域被布置成等同地受到由干涉引起的强度变化的影响。计算器计算从第一组区域提供的第一组信号和从第二组区域提供的第二组信号的第一组信号的和之间的差，从而产生聚焦误差信号。

5. 发明申请

US20080084798A1 Optical pick-up head, optical information apparatus, and optical information reproducing method 有权
公开(公告)号：US20080084798A1
公开(公告)日：2008-04-10
申请号：US11981366
申请日：2007-10-31
申请人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
发明人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
IPC分类号： G11B7/00
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.

6. 发明申请

US20070195664A1 Optical pick-up head, optical information apparatus, and optical information reproducing method 有权
公开(公告)号：US20070195664A1
公开(公告)日：2007-08-23
申请号：US11789106
申请日：2007-04-23
申请人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
发明人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
IPC分类号： G11B7/00
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. 发明授权

US07558162B2 Optical pick-up head, optical information apparatus, and optical information reproducing method 有权
公开(公告)号：US07558162B2
公开(公告)日：2009-07-07
申请号：US11981487
申请日：2007-10-31
申请人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
发明人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
IPC分类号： G11B7/00
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.

8. 发明申请

US20080259750A1 Optical pick-up head, optical information apparatus, and optical information reproducing method 有权
公开(公告)号：US20080259750A1
公开(公告)日：2008-10-23
申请号：US11981236
申请日：2007-10-31
申请人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
发明人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
IPC分类号： G11B7/00
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.

9. 发明授权

US07460448B2 Optical pick-up head, optical information apparatus, and optical information reproducing method 有权
标题翻译：光学拾取头，光学信息装置和光学信息再现方法
公开(公告)号：US07460448B2
公开(公告)日：2008-12-02
申请号：US11789106
申请日：2007-04-23
申请人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
发明人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
IPC分类号： G11B7/00
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：本发明的光信息装置包括：光拾取头，包括：光源; 衍射单位; 冷凝单元; 分束器; 光检测器; 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道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。

10. 发明授权

US07420897B2 Optical head, an optical disk device and an integrated circuit 失效
标题翻译：光头，光盘装置和集成电路
公开(公告)号：US07420897B2
公开(公告)日：2008-09-02
申请号：US11176207
申请日：2005-07-08
申请人： Fumitomo Yamasaki , Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai
发明人： Fumitomo Yamasaki , Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai
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 is comprised of A1 region, A2 region, B1 region, B2 region and N region. A tilt detector carries out a tilt detection in accordance with a first difference signal, which is a difference signal between a signal obtained from the A1 region and a signal obtained from the B1 region, and a second difference signal, which is difference signal between a signal obtained from the A2 region and a signal obtained from the B2 region.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：感光元件的感光区域由A 1区域，A 2区域，B 1区域，B 2区域和N区域构成。倾斜检测器根据作为从A 1区域获得的信号与从B 1区域获得的信号之间的差分信号的第一差分信号和作为差分信号的第二差分信号执行倾斜检测在从A 2区域获得的信号和从B 2区域获得的信号之间。因此，即使在记录的信息轨道和未记录的信息轨迹之间的边界，也可以获得具有散焦影响很小的光盘倾斜检测信号。

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