公开(公告)号：US07274646B2

公开(公告)日：2007-09-25

申请号：US10263056

申请日：2002-10-03

申请人： Hideaki Hirai

发明人： Hideaki Hirai

IPC分类号： G11B7/135 ,  G02B13/18

CPC分类号： G11B7/1369 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13927 ,  G11B2007/0006

摘要： As an object lens for an optical pickup, applied is a single-lens and both-side-convex configuration is applied. Further, specific conditional formulas are created with respect to a particular numerical aperture NA, for a paraxial curvature radius R1 on the surface on the light source side; the working distance WD, the refractive index nd with respect to the d-line, and the focal length f. Furthermore, specific conditional formulas are created for the refractive index nd with respect to the d-line and the Abbe's number νd.

摘要翻译： 作为用于光学拾取器的物镜，应用是单透镜，并且应用双侧凸构造。 此外，对于光源侧的表面上的近轴曲率半径R1，针对特定数值孔径NA创建特定的条件公式; 工作距离WD，相对于d线的折射率nd和焦距f。 此外，针对d线和阿贝数nud的折射率nd创建特定的条件公式。

公开(公告)号：US07142497B2

公开(公告)日：2006-11-28

申请号：US10372916

申请日：2003-02-26

申请人： Hideaki Hirai

发明人： Hideaki Hirai

IPC分类号： G11B7/135 ,  G11B7/00

CPC分类号： G11B7/1353 ,  G02F1/134309 ,  G02F2203/18 ,  G11B7/123 ,  G11B7/127 ,  G11B7/131 ,  G11B7/1365 ,  G11B7/1369 ,  G11B7/139 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/0013

摘要： An optical pickup apparatus for performing recording, reproduction and deletion of information onto each of three types of optical recording mediums including light sources of a blue wavelength zone, light sources of a red wavelength zone and light sources of an infrared wavelength zone. The optical pickup apparatus also has a single object lens which condenses a light from any of the light sources and a single aberration correction device disposed in a common light path between each of the light sources and the object lens.

摘要翻译： 一种用于在包括蓝色波长区域的光源，红色波长区域的光源和红外波长区域的光源的三种类型的光学记录介质中进行信息记录，再现和删除的光学拾取装置。 光学拾取装置还具有将来自任何光源的光聚光的单个物镜和设置在每个光源和物镜之间的公共光路中的单个像差校正装置。

公开(公告)号：US20050265216A1

公开(公告)日：2005-12-01

申请号：US11138328

申请日：2005-05-27

申请人： Hideaki Hirai

发明人： Hideaki Hirai

IPC分类号： G11B7/005 ,  G11B7/00 ,  G11B7/007 ,  G11B7/013 ,  G11B7/135 ,  G11B7/24

CPC分类号： G11B7/1378 ,  G11B7/13925 ,  G11B7/24038 ,  G11B7/24088 ,  G11B2007/0013 ,  G11B2007/13727

摘要： An optical reproduction method is provided that is able to increase recording capacity of an optical recording medium by combining the techniques of light wavelength reduction, signal level multiplication, and recording layer multiplication in an optical recording medium. In the optical reproduction method for reproducing signals based on light reflected from plural pits in the optical recording medium with plural recording layers, a pit depth H, a wavelength λ of the incident light, and a refractive index n of the substrate of the optical recording medium satisfy: λ/6n≦H

摘要翻译： 提供一种光学再现方法，其能够通过将光波长缩小，信号电平乘法和记录层乘法的技术组合在光学记录介质中来提高光学记录介质的记录容量。 在用于在具有多个记录层的光记录介质中从多个凹坑反射的光再现信号的光学再现方法中，凹坑深度H，入射光的波长λ和光记录介质的折射率n 中等满足：λ/ 6n <= H <λ4n。 包括凹坑的区域被分成具有相同面积的单元，并且响应于单元的凹坑占用而产生多电平再现信号。 在光记录介质上聚集的光中的球面像差W <40>满足W≥40≤0.01兰姆。

公开(公告)号：US20050122879A1

公开(公告)日：2005-06-09

申请号：US10994656

申请日：2004-11-23

申请人： Hideaki Hirai ,  Tetsuya Ogata

发明人： Hideaki Hirai ,  Tetsuya Ogata

IPC分类号： G11B7/00 ,  G11B7/135

CPC分类号： G11B7/13925 ,  G11B7/1353 ,  G11B7/1378 ,  G11B2007/0013

摘要： An optical system has an objective lens condensing a light beam from the light source on a recording layer selected from the plurality of recording layers of the optical disk, and leading a returning light beam reflected by the selected recording layer to a predetermined position; an aberration detecting part detecting a physical amount relative to spherical aberration based on an output signal of the photodetector; an aberration correcting part correcting the spherical aberration based on the physical amount; and a processing device carrying out at least the information reproduction o from among information recording, information reproduction and information deletion with the use of the output signal of the photodetector.

摘要翻译： 光学系统具有将来自光源的光束聚光在选自光盘的多个记录层的记录层上的物镜，并将由所选择的记录层反射的返回光束引导到预定位置; 基于所述光检测器的输出信号来检测相对于球面像差的物理量的像差检测部; 基于物理量校正球面像差的像差校正部; 以及使用光检测器的输出信号从信息记录，信息再现和信息删除中至少执行信息再现o的处理装置。

公开(公告)号：US20150054954A1

公开(公告)日：2015-02-26

申请号：US14372061

申请日：2013-02-12

申请人： Izumi Itoh ,  Hideaki Hirai ,  Masanori Kobayashi

发明人： Izumi Itoh ,  Hideaki Hirai ,  Masanori Kobayashi

IPC分类号： G02B5/08 ,  B60R11/04 ,  H04N7/18

CPC分类号： G02B5/0816 ,  B60R11/04 ,  B60R2011/0026 ,  B60S1/0844 ,  G01N21/21 ,  G01N2021/435 ,  H04N7/18

摘要： An imaging unit includes a light source, an imaging element to receive a light having entered an outer surface of the transparent plate-like member from a predetermined imaging area and transmitted through the transparent plate-like member and a light from the light source reflected by an attached matter on the outer surface, to capture an image of the predetermined imaging area and that of the attached matter, a mirror module fixed on the internal surface of the transparent plate-like member to fixedly support a reflective mirror to reflect the light from the light source, an imaging module to fixedly support the light source and the imaging element, fixed relative to the internal surface of the transparent plate-like member so that the imaging element captures an image in a certain direction, and a positioning mechanism to determine relative positions of the mirror module and the imaging module.

摘要翻译： 成像单元包括光源，成像元件，用于从预定的成像区域接收从透明板状构件进入透明板状构件的外表面并透过透明板状构件的光和来自光源反射的光 在外表面上附着物体，以捕获预定成像区域和附着物的图像，固定在透明板状构件的内表面上的反射镜模块，以固定地支撑反射镜以反射来自 光源，用于固定地支撑光源和成像元件的成像模块，其相对于透明板状部件的内表面固定，使得成像元件在某个方向上捕获图像;以及定位机构，用于确定 镜模块和成像模块的相对位置。

公开(公告)号：US08831286B2

公开(公告)日：2014-09-09

申请号：US13807175

申请日：2011-06-27

申请人： Xue Li ,  Hideaki Hirai

发明人： Xue Li ,  Hideaki Hirai

IPC分类号： G06K9/00 ,  G06K9/32 ,  G01N21/17 ,  H04N5/225 ,  G06K9/20 ,  H04N5/232 ,  G02B27/28

CPC分类号： G01N21/17 ,  G02B27/28 ,  G06K9/00791 ,  G06K9/00798 ,  G06K9/00805 ,  G06K9/2036 ,  G06K9/3233 ,  H04N5/2254 ,  H04N5/2258 ,  H04N5/23229

摘要： An object identification device identifying an image region of an identification target includes an imaging unit receiving two polarization lights and imaging respective polarization images, a brightness calculation unit dividing the two polarization images into processing regions and calculating a brightness sum value between the two polarizations images for each processing region, a differential polarization degree calculation unit calculating a differential polarization degree for each processing region, a selecting condition determination unit determining whether the differential polarization degree satisfies a predetermined selecting condition, and an object identification processing unit specifying the processing region based on the differential polarization degree or the brightness sum value depending on whether the predetermined selecting condition is satisfied and identifying plural processing regions that are specified as the processing regions as the image region of the identification target.

摘要翻译： 标识识别目标的图像区域的物体识别装置包括：接收两个偏振光并成像各个偏振图像的成像单元，将两个偏振图像分割成处理区域的亮度计算单元，并计算两个偏振图像之间的亮度和值 每个处理区域，差分偏振度计算单元，用于计算每个处理区域的差分偏振度;选择条件确定单元，确定差分偏振度是否满足预定的选择条件;以及对象识别处理单元，基于该处理区域指定处理区域 微分偏振度或亮度和值取决于是否满足预定的选择条件，并且识别被指定为处理区域的多个处理区域作为iden的图像区域 指标目标

公开(公告)号：US20130208120A1

公开(公告)日：2013-08-15

申请号：US13763980

申请日：2013-02-11

申请人： Hideaki Hirai ,  Izumi Itoh ,  Masanori Kobayashi

发明人： Hideaki Hirai ,  Izumi Itoh ,  Masanori Kobayashi

IPC分类号： H04N7/18

CPC分类号： H04N7/18 ,  B60S1/0844 ,  G06K9/00825

摘要： An attached matter detector includes a light source; an imager receiving transmitted light from a predetermined imaging region on a light-receiving region for an imaging region and imaging an image of the imaging region, and receiving reflected light on a light-receiving region for attached matter detection when light from the light source is reflected by attached matter and imaging an image of the attached matter; a parameter calculator of an image for an attached matter image region calculating a parameter of an image for an attached matter image region as information of an image region of the attached matter; a parameter calculator of an image for an imaging region calculating a parameter of an image for an imaging region as information of the imaging region; and an output device of an attached matter state signal outputting a signal showing a state of the attached matter based on the calculated parameters.

摘要翻译： 附件检测器包括光源; 成像器接收来自用于成像区域的光接收区域上的预定成像区域的透射光并且对成像区域的图像进行成像，并且当来自光源的光为来自接收物体检测的光接收区域时，接收反射光 由附件反映并成像附件的图像; 计算附着物图像区域的图像的参数的附着图像区域的图像的参数计算器，作为附着物的图像区域的信息; 用于计算成像区域的图像的参数的成像区域的图像的参数计算器，作为成像区域的信息; 以及附加状态信号的输出装置，根据计算出的参数输出表示附件的状态的信号。

公开(公告)号：US08351118B2

公开(公告)日：2013-01-08

申请号：US12603731

申请日：2009-10-22

申请人： Toshiaki Tokita ,  Hideaki Hirai ,  Seizo Suzuki

发明人： Toshiaki Tokita ,  Hideaki Hirai ,  Seizo Suzuki

IPC分类号： G02B5/30

CPC分类号： G02B27/283 ,  G02B5/3041 ,  G02B26/123

摘要： A polarization splitting device includes a polarization beam splitter having a polarization splitting surface and allows P-polarized light to transmit therethrough and reflects S-polarized light. A subwavelength structure grating is formed on the polarization splitting surface with a grating pitch smaller than wavelength of incident light. The polarization splitting device also includes a polarizer that is arranged on an optical path of light reflected from the polarization beam splitter and has a transmission axis that is parallel to a polarization direction of the S-polarized light.

摘要翻译： 偏振分束装置包括具有偏振分离表面的偏振分束器，并允许P偏振光透射并反射S偏振光。 在具有比入射光的波长小的光栅间距的偏振分离表面上形成亚波长结构光栅。 偏振光分离装置还包括偏振器，其被布置在从偏振分束器反射的光的光路上，并具有平行于S偏振光的偏振方向的透射轴。

公开(公告)号：US08320226B2

公开(公告)日：2012-11-27

申请号：US13141134

申请日：2009-11-26

申请人： Hideaki Hirai

发明人： Hideaki Hirai

IPC分类号： G11B7/00

CPC分类号： G03B21/14 ,  G02B5/1809 ,  G02F1/13362 ,  G03B21/2073 ,  G11B7/1353

摘要： A disclosed optical element includes three or more sub-wavelength convexo-concave structures having pitches less than a wavelength of an incident light incident to the optical element and having groove depths equal to each other and a periodic structure having the three or more sub-wavelength convexo-concave structures, the pitch of the periodic structure greater than the wavelength of the incident light, in which a predetermined polarization direction of the incident light is diffracted mainly into a specific order.

摘要翻译： 所公开的光学元件包括三个或更多个亚波长凹凸结构，其具有小于入射到光学元件的入射光的波长并且具有彼此相等的凹槽深度的间距，以及具有三个或更多个亚波长的周期结构 凸凹结构，其中入射光的预定偏振方向主要以特定顺序衍射的周期结构的间距大于入射光的波长。

公开(公告)号：US08089848B2

公开(公告)日：2012-01-03

申请号：US12297385

申请日：2007-04-18

申请人： Yukiko Hamano ,  Hideaki Hirai

发明人： Yukiko Hamano ,  Hideaki Hirai

IPC分类号： G11B7/135

CPC分类号： G02B5/1814 ,  G02B5/1876 ,  G02B5/1895 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13922

摘要： A disclosed optical pickup for performing at least recording, reproduction, or deletion of information on a first, second, third, and fourth optical recording media having different recording densities includes a first light source configured to emit first light having a first wavelength λ1 corresponding to the first and second optical recording media; a second light source configured to emit second light having a second wavelength λ2 corresponding to the third optical recording medium; a third light source configured to emit third light having a third wavelength λ3 corresponding to the fourth optical recording medium; an objective lens configured to focus the first light, the second light, and the third light on corresponding recording surfaces of the first, second, third, and fourth optical recording media; and an aberration correcting unit between the objective lens and the first, second, and third light sources.

摘要翻译： 一种用于至少在具有不同记录密度的第一，第二，第三和第四光学记录介质上记录，再现或删除信息的光学拾取器包括：第一光源，被配置为发射具有对应于 第一和第二光学记录介质; 第二光源，被配置为发射具有对应于所述第三光学记录介质的第二波长λ2的第二光; 第三光源，被配置为发射对应于第四光学记录介质的具有第三波长λ3的第三光; 配置为将第一光，第二光和第三​​光聚焦在第一，第二，第三和第四光学记录介质的相应记录表面上的物镜; 以及在物镜与第一，第二和第三光源之间的像差校正单元。