公开(公告)号：US20130229902A1

公开(公告)日：2013-09-05

申请号：US13884890

申请日：2011-11-09

申请人： Hideki Tanaka ,  Kentarou Nakamura ,  Kiyono Tateyama

发明人： Hideki Tanaka ,  Kentarou Nakamura ,  Kiyono Tateyama

IPC分类号： G11B7/1275

CPC分类号： G11B7/1275 ,  G02B27/0025 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical pickup apparatus including an objective lens capable of enhancing temperature characteristics and wavelength characteristics, and which enables compatibility for three types of optical discs of BDs, DVDs, and CDs by using the objective lens in common, an optical information recording and reproducing apparatus, and an objective lens suitable for it. In a first optical path difference providing structure in which at least a first basic structure and a second basic structure are superimposed on each other, an amount of a level difference in an optical axis direction can be reduced, whereby it becomes possible to suppress the lowering of a diffraction efficiency when wavelength changes. Further, in the first basic structure and the second basic structure deterioration of the spherical aberration due to the change of the refractive index of the objective lens can be corrected by utilizing a phenomenon that the wavelength of the light source rises similarly due to a rise in the environmental temperature.

摘要翻译： 一种光拾取装置，包括能够增强温度特性和波长特性的物镜，并且通过共同使用物镜实现BD，DVD和CD的三种类型的光盘的兼容性，光信息记录和再现装置， 和适合它的物镜。 在其中至少第一基本结构和第二基本结构彼此叠置的第一光程差提供结构中，可以减小光轴方向上的电平差的量，从而可以抑制下降 的波长变化时的衍射效率。 此外，在第一基本结构和第二基本结构中，由于物镜的折射率的变化引起的球面像差的劣化可以通过利用由于光源的波长类似地上升的现象来校正 环境温度

公开(公告)号：US08111602B2

公开(公告)日：2012-02-07

申请号：US12999856

申请日：2009-06-01

申请人： Kyu Takada ,  Kiyono Tateyama ,  Kentarou Nakamura

发明人： Kyu Takada ,  Kiyono Tateyama ,  Kentarou Nakamura

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G02B3/04 ,  G02B5/1895 ,  G11B7/1374 ,  G11B7/13922

摘要： Provided are an optical pickup apparatus and an objective lens which can record and/or reproduce information for discs with different recording densities and can realize simplification of the structure of themselves and reducing cost. When the expression (1) is satisfied, step differences of a step structure can be further reduced than those in the case that d1=λ1(n−1) holds, and fine grooves corresponding to a steps structure, formed on an optical-surface transfer surface of a mold for molding the objective lens become shallow, to be easily processed. In addition, the moldability is enhanced because the material of the objective lens easily enters the inner portion of the grooves. Further, a fluctuation of a diffraction efficiency caused when wavelength of a light flux changes or temperature changes is reduced so that information can be recorded and/or reduced stably.

摘要翻译： 提供一种能够记录和/或再现具有不同记录密度的盘的信息的光学拾取装置和物镜，并且可以实现其自身的结构的简化并降低成本。 当满足表达式（1）时，阶梯结构的步长差可以比在d1 =λ1（n-1）成立的情况下的阶梯差更进一步降低，并且形成在光学表面上的与阶梯结构相对应的细槽 用于模制物镜的模具的转印表面变浅，易于加工。 此外，由于物镜的材料容易进入槽的内部，所以成型性得到提高。 此外，当光束波长变化或温度变化时引起的衍射效率的波动减小，从而可以稳定地记录和/或降低信息。

公开(公告)号：US20110122755A1

公开(公告)日：2011-05-26

申请号：US13056256

申请日：2009-07-21

申请人： Kiyono Tateyama ,  Kentarou Nakamura

发明人： Kiyono Tateyama ,  Kentarou Nakamura

IPC分类号： G11B7/135 ,  G02B13/18 ,  G02B5/18

CPC分类号： G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006

摘要： Provided are an objective lens with enhanced transmittance and an optical pickup apparatus which can record and/or reproduce information properly for three kinds of discs with different recording densities, even if a single lens is used as the objective lens. When all the expressions (1) to (3) are satisfied, excellent aberration characteristics can be obtained for the three kinds of discs: −0.02≦m1≦0.02 (1); 0≦(WD1−WD2)≦1.57 m2+0.123 or 1.57 m2+0.24≦(WD1−WD2)≦0.7 (2); and 0≦(WD1−WD3)≦1.79 m3+0.333 or 1.66 m3+0.508≦(WD1−WD3)≦0.7 (3).

摘要翻译： 提供了具有增强的透射率的物镜和可以适当地记录和/或再现具有不同记录密度的三种盘的信息的光学拾取装置，即使使用单个透镜作为物镜。 当满足所有表达式（1）至（3）时，可以获得三种光盘的优异的像差特性：-0.02＆nlE; m1＆nlE; 0.02（1）; 0＆nlE;（WD1-WD2）＆nlE; 1.57m2 + 0.123或1.57m2 + 0.24＆nlE;（WD1-WD2）＆nlE; 0.7（2）; 和0＆nlE;（WD1-WD3）＆nlE; 1.79m3 + 0.333或1.66m3 + 0.508＆nlE;（WD1-WD3）＆N1; 0.7（3）。

公开(公告)号：US08760990B2

公开(公告)日：2014-06-24

申请号：US13884890

申请日：2011-11-09

申请人： Hideki Tanaka ,  Kentarou Nakamura ,  Kiyono Tateyama

发明人： Hideki Tanaka ,  Kentarou Nakamura ,  Kiyono Tateyama

IPC分类号： G11B7/00

CPC分类号： G11B7/1275 ,  G02B27/0025 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical pickup apparatus including an objective lens capable of enhancing temperature characteristics and wavelength characteristics, and which enables compatibility for three types of optical discs of BDs, DVDs, and CDs by using the objective lens in common, an optical information recording and reproducing apparatus, and an objective lens suitable for it. In a first optical path difference providing structure in which at least a first basic structure and a second basic structure are superimposed on each other, an amount of a level difference in an optical axis direction can be reduced, whereby it becomes possible to suppress the lowering of a diffraction efficiency when wavelength changes. Further, in the first basic structure and the second basic structure deterioration of the spherical aberration due to the change of the refractive index of the objective lens can be corrected by utilizing a phenomenon that the wavelength of the light source rises similarly due to a rise in the environmental temperature.

摘要翻译： 一种光拾取装置，包括能够增强温度特性和波长特性的物镜，并且通过共同使用物镜实现BD，DVD和CD的三种类型的光盘的兼容性，光信息记录和再现装置， 和适合它的物镜。 在其中至少第一基本结构和第二基本结构彼此叠置的第一光程差提供结构中，可以减小光轴方向上的电平差的量，从而可以抑制下降 的波长变化时的衍射效率。 此外，在第一基本结构和第二基本结构中，由于物镜的折射率的变化引起的球面像差的劣化可以通过利用由于光源的波长类似地上升的现象来校正 环境温度。

公开(公告)号：US08406111B2

公开(公告)日：2013-03-26

申请号：US13056256

申请日：2009-07-21

申请人： Kiyono Tateyama ,  Kentarou Nakamura

发明人： Kiyono Tateyama ,  Kentarou Nakamura

IPC分类号： G11B7/135

CPC分类号： G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006

摘要： Provided are an objective lens with enhanced transmittance and an optical pickup apparatus which can record and/or reproduce information properly for three kinds of discs with different recording densities, even if a single lens is used as the objective lens. When all the expressions (1) to (3) are satisfied, excellent aberration characteristics can be obtained for the three kinds of discs: −0.02≦m1≦0.02 (1); 0≦(WD1−WD2)≦1.57 m2+0.123 or 1.57 m2+0.24≦(WD1−WD2)≦0.7 (2); and 0≦(WD1−WD3)≦1.79 m3+0.333 or 1.66 m3+0.508≦(WD1−WD3)≦0.7 (3).

摘要翻译： 提供了具有增强的透射率的物镜和可以适当地记录和/或再现具有不同记录密度的三种盘的信息的光学拾取装置，即使使用单个透镜作为物镜。 当满足所有表达式（1）至（3）时，可以获得三种光盘的优异的像差特性：-0.02＆nlE; m1＆nlE; 0.02（1）; 0＆nlE;（WD1-WD2）＆nlE; 1.57m2 + 0.123或1.57m2 + 0.24＆nlE;（WD1-WD2）＆nlE; 0.7（2）; 和0＆nlE;（WD1-WD3）＆nlE; 1.79m3 + 0.333或1.66m3 + 0.508＆nlE;（WD1-WD3）＆N1; 0.7（3）。

公开(公告)号：US20110085433A1

公开(公告)日：2011-04-14

申请号：US12999856

申请日：2009-06-01

申请人： Kyu Takada ,  Kiyono Tateyama ,  Kentarou Nakamura

发明人： Kyu Takada ,  Kiyono Tateyama ,  Kentarou Nakamura

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G02B3/04 ,  G02B5/1895 ,  G11B7/1374 ,  G11B7/13922

摘要： Provided are an optical pickup apparatus and an objective lens which can record and/or reproduce information for discs with different recording densities and can realize simplification of the structure of themselves and reducing cost. When the expression (1) is satisfied, step differences of a step structure can be further reduced than those in the case that d1=λ1(n−1) holds, and fine grooves corresponding to a steps structure, formed on an optical-surface transfer surface of a mold for molding the objective lens become shallow, to be easily processed. In addition, the moldability is enhanced because the material of the objective lens easily enters the inner portion of the grooves. Further, a fluctuation of a diffraction efficiency caused when wavelength of a light flux changes or temperature changes is reduced so that information can be recorded and/or reduced stably.

摘要翻译： 提供一种能够记录和/或再现具有不同记录密度的盘的信息的光学拾取装置和物镜，并且可以实现其自身的结构的简化并降低成本。 当满足表达式（1）时，阶梯结构的步长差可以比在d1 =λ1（n-1）成立的情况下的阶梯差更进一步降低，并且形成在光学表面上的与阶梯结构相对应的细槽 用于模制物镜的模具的转印表面变浅，易于加工。 此外，由于物镜的材料容易进入槽的内部，所以成型性得到提高。 此外，当光束波长变化或温度变化时引起的衍射效率的波动减小，从而可以稳定地记录和/或降低信息。

公开(公告)号：US20130182337A1

公开(公告)日：2013-07-18

申请号：US13824985

申请日：2011-09-27

申请人： Kiyono Tateyama

发明人： Kiyono Tateyama

IPC分类号： G11B7/125 ,  G02B13/18

CPC分类号： G11B7/125 ,  G02B13/18 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

摘要： An objective lens for an optical pickup device is characterized in that compatibility of three types of optical discs, which are a BD, a DVD, and a CD, may be realized by a common objective lens, and a flare can be created by providing an over-spherical aberration when a third optical disc is used from a size relationship between a pitch on a central region side and a pitch on an intermediate region side across a boundary and a relationship of a direction of a step in the base structures superimposed in a central region and an intermediate region of the objective lens.

摘要翻译： 用于光学拾取装置的物镜的特征在于，可以通过公共物镜实现作为BD，DVD和CD的三种类型的光盘的兼容性，并且可以通过提供闪光灯 从中央区域侧的间距与跨越边界的中间区域侧的间距的尺寸关系使用第三光盘时的过球面像差，以及叠加在边界中的基底结构中的台阶方向的关系 中心区域和物镜的中间区域。

公开(公告)号：US08873166B2

公开(公告)日：2014-10-28

申请号：US13824985

申请日：2011-09-27

申请人： Kiyono Tateyama

发明人： Kiyono Tateyama

IPC分类号： G02B3/02 ,  G11B7/135

CPC分类号： G11B7/125 ,  G02B13/18 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

摘要： An objective lens for an optical pickup device is characterized in that compatibility of three types of optical discs, which are a BD, a DVD, and a CD, may be realized by a common objective lens, and a flare can be created by providing an over-spherical aberration when a third optical disc is used from a size relationship between a pitch on a central region side and a pitch on an intermediate region side across a boundary and a relationship of a direction of a step in the base structures superimposed in a central region and an intermediate region of the objective lens.

摘要翻译： 用于光学拾取装置的物镜的特征在于，可以通过公共物镜实现作为BD，DVD和CD的三种类型的光盘的兼容性，并且可以通过提供闪光灯 从中央区域侧的间距与跨越边界的中间区域侧的间距的尺寸关系使用第三光盘时的过球面像差，以及叠加在边界中的基底结构中的台阶方向的关系 中心区域和物镜的中间区域。

公开(公告)号：US20090207716A1

公开(公告)日：2009-08-20

申请号：US12294604

申请日：2007-03-12

申请人： Kiyono Tateyama

发明人： Kiyono Tateyama

IPC分类号： G11B7/135

CPC分类号： G11B7/135 ,  G11B7/1275 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

摘要： An optical pickup apparatus includes: a first light source; a second light source; a light-converging optical system including a coupling lens and an objective lens; and a photodetector. The optical pickup apparatus is capable of recording and/or reproducing information by converging a light flux from each of the first and second light sources with the light-converging optical system on an information recording surface of each of first and second optical information recording media through a protective layer, and by detecting the light flux reflected from the information recording surface and passing through the light-converging optical system again, on the photodetector. The optical pickup apparatus satisfies predetermined conditions according to an optical path length from each of first and second light sources and the information recording medium, a magnification of the objective lens, and a magnification of the light-converging optical system.

摘要翻译： 一种光学拾取装置，包括：第一光源; 第二光源; 包括耦合透镜和物镜的聚光光学系统; 和光电检测器。 光拾取装置能够通过将来自第一和第二光源中的每一个的光束与聚光光学系统聚焦在第一和第二光学信息记录介质的信息记录表面上来记录和/或再现信息，通过 保护层，并且通过检测从信息记录表面反射并在光检测器上再次通过聚光光学系统的光束。 光拾取装置根据来自第一和第二光源和信息记录介质中的每一个的光路长度，物镜的放大率和聚光光学系统的放大率而满足预定条件。

公开(公告)号：US07969852B2

公开(公告)日：2011-06-28

申请号：US12294604

申请日：2007-03-12

申请人： Kiyono Tateyama

发明人： Kiyono Tateyama

IPC分类号： G11B7/00

CPC分类号： G11B7/135 ,  G11B7/1275 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

摘要： An optical pickup apparatus includes: a first light source; a second light source; a light-converging optical system including a coupling lens and an objective lens; and a photodetector. The optical pickup apparatus is capable of recording and/or reproducing information by converging a light flux from each of the first and second light sources with the light-converging optical system on an information recording surface of each of first and second optical information recording media through a protective layer, and by detecting the light flux reflected from the information recording surface and passing through the light-converging optical system again, on the photodetector. The optical pickup apparatus satisfies predetermined conditions according to an optical path length from each of first and second light sources and the information recording medium, a magnification of the objective lens, and a magnification of the light-converging optical system.

摘要翻译： 一种光学拾取装置，包括：第一光源; 第二光源; 包括耦合透镜和物镜的聚光光学系统; 和光电检测器。 光拾取装置能够通过将来自第一和第二光源中的每一个的光束与聚光光学系统聚焦在第一和第二光学信息记录介质的信息记录表面上来记录和/或再现信息，通过 保护层，并且通过检测从信息记录表面反射并在光检测器上再次通过聚光光学系统的光束。 光拾取装置根据来自第一和第二光源和信息记录介质中的每一个的光路长度，物镜的放大率和聚光光学系统的放大率而满足预定条件。