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61. 发明授权

US06728192B1 Tracking error signal detection system for optical recording medium 失效
标题翻译：光记录介质跟踪误差信号检测系统
公开(公告)号：US06728192B1
公开(公告)日：2004-04-27
申请号：US09421025
申请日：1999-10-19
申请人： Shin-ichi Kadowaki , Shinichi Tanaka , Seiji Nishiwaki , Kousei Sano , Seiji Nishino
发明人： Shin-ichi Kadowaki , Shinichi Tanaka , Seiji Nishiwaki , Kousei Sano , Seiji Nishino
IPC分类号： G11B700
CPC分类号： G11B5/5556 , G11B5/016 , G11B5/5565 , G11B5/59677 , G11B7/0903 , G11B7/0941 , G11B21/10
摘要： In a magnetic recording medium to detect tracking error signals optically where an optical head and a magnetic head scan different tracks, two signals having phases different by &pgr;/2 are generated and added or subtracted. By changing the amplitude of the two signals with a changeable gain amplifying means, a phase of a tracking error signal is changed so that the servo operation is conducted at the middle of the amplitude of the tracking error signal to keep the magnetic head on track.
摘要翻译：在用于检测光头和磁头扫描不同轨迹的光学跟踪误差信号的磁记录介质中，产生具有不同于π/ 2的相位的两个信号，并相加或相减。通过用可变增益放大装置改变两个信号的振幅，改变跟踪误差信号的相位，使得伺服操作在跟踪误差信号的幅度的中间进行，以保持磁头跟踪。

62. 发明授权

US5200939A Optical head apparatus including a waveguide layer with concentric or spiral periodic structure 失效
标题翻译：光学头装置，包括具有中心或螺旋周期结构的波导层
公开(公告)号：US5200939A
公开(公告)日：1993-04-06
申请号：US474757
申请日：1991-04-04
申请人： Seiji Nishiwaki , Yoshinao Taketomi , Shinji Uchida , Takaaki Tomita , Junichi Asada
发明人： Seiji Nishiwaki , Yoshinao Taketomi , Shinji Uchida , Takaaki Tomita , Junichi Asada
IPC分类号： G11B7/09 , G11B7/12 , G11B7/13 , G11B7/135
CPC分类号： G11B7/1365 , G11B7/0917 , G11B7/124 , G11B7/13 , G11B7/1384
摘要： An optical head arranged in such a manner that light emitted from a semiconductor laser (8) is inputted and coupled in a waveguide layer (3C) by a grating coupler (4C) having a concentric or spiral structure formed by concavities and convexities so as to convert light into waveguide light (12C) passing toward to outer periphery in the layer, the waveguide light (12C) is shifted at the outermost peripheral portion of the waveguide layer (3C) to a waveguide layer (3B) so as to convert the waveguide light (12C) into waveguide light (12B), the waveguide light (12B) is radiated by a grating coupler (4B) having a concentric or spiral periodical structure, the concentrically polarized (or radially polarized) light (13) is converted into linearly polarized light (14) by a polarizing element (10B) so as to be converged on the reflection surface (16) of the optical disc, light reflected from the reflection surface (16) is again converted into concentrically polarized (or radially polarized) light (17A) and (17B) by the polarizing element (10B) so as to be inputted and coupled in waveguide layers (3A) and (3B) by a grating coupler (4A) and the grating coupler (4B), and then to be turned into waveguide light (18A) and (18B) each of which passes through the layer, and the waveguide light (18A) and (18B) is radiated at the end portions of the waveguide layers (3A) and (3B) so as to be respectively received by photo detectors (6A) and (6B) so that a control signal and a reproduction signal are obtained.
摘要翻译： PCT No.PCT / JP89 / 00796 Sec。 371日期：1991年4月4日 102（e）日期1991年4月4日PCT PCT 1989年8月2日PCT公布。 WO90 / 01768 PCT出版物日期：1990年2月22日。一种光学头，以从半导体激光器（8）发出的光输入并通过形成有同心或螺旋结构的光栅耦合器（4C）耦合在波导层（3C）通过凹凸来将光转换成通过该层的外周的波导管（12C），波导管（12C）在波导层（3C）的最外周部分移动到波导层（3B）），以将波导光（12C）转换为波导光（12B），波导光（12B）由具有同心或螺旋周期结构的光栅耦合器（4B）辐射，同心偏振（或径向偏振）的光（13）被偏振元件（10B）转换成线偏振光（14），以便会聚在光盘的反射面（16）上，从反射面（16）反射的光再次转换为同心圆极化（或辐射）通过偏振元件（10B）输入并耦合在波导层（3A）和（3B）中，由光栅耦合器（4A）和光栅耦合器（4B）耦合在一起，然后变成每个通过该层的波导光（18A）和（18B），并且波导光（18A）和（18B）在波导层（3A）和（3B）的端部处被辐射），以便分别由光电检测器（6A）和（6B）接收，从而获得控制信号和再现信号。

63. 发明授权

US5193130A Light deflecting device 失效
标题翻译：光偏转装置
公开(公告)号：US5193130A
公开(公告)日：1993-03-09
申请号：US474763
申请日：1990-03-20
申请人： Seiji Nishiwaki , Yoshinao Taketomi , Shinji Uchida , Takaaki Tomita , Junichi Asada
发明人： Seiji Nishiwaki , Yoshinao Taketomi , Shinji Uchida , Takaaki Tomita , Junichi Asada
IPC分类号： G02F1/1333 , G02F1/295
CPC分类号： G02F1/1326 , G02F1/2955
摘要： The voltage signal applied between a conductive thin film (2) and a transparent conductive thin film (6) changes the aligning direction of a liquid crystal layer (5) near the surface of a waveguide layer (4) so that the refractive index of the liquid crystal (5) for waveguide light (8) is changed thereby to change the equivalent refractive index for the waveguide light (8), and thus the diffraction angle of the radiated light (9) from the waveguide layer (4) including the cyclic structure (3G) formed therein is also changed to deflect the radiated light. If the waveguide light (8) is propagated in the direction perpendicular to the longitudinal direction of the arrangement of the cyclic structure (3G), which is arranged in the form of a concentric circle, and the radiated light (9) from the waveguide layer (4) is focused at a focusing point outside the waveguide layer (4), the deflection of the radiated light (9), which is caused by applying a voltage signal between the conductive thin film (2) and the transparent conductive thin film (6), produces a displacement of the focusing point. In particular, if the conductive thin film (2) or the transparent conductive thin film (6) is divided into a large number of sections and voltage signals are individually applied to such sections, the focusing point (F) can be displaced to any optional point.
摘要翻译： PCT No.PCT / JP89 / 00797 Sec。 371 1990年3月20日第 102（e）1990年3月20日PCT PCT 1989年8月2日PCT。出版物WO90 / 0172200 日期：1990年2月22日。施加在导电薄膜（2）和透明导电薄膜（6）之间的电压信号改变靠近波导层（4）表面的液晶层（5）的对准方向，使得用于波导光（8）的液晶（5）的折射率改变，从而改变波导光（8）的等效折射率，因此来自波导的辐射光（9）的衍射角包括其中形成的环状结构（3G）的层（4）也被改变以偏转辐射光。如果波导光（8）沿垂直于以同心圆形排列的循环结构（3G）的布置的纵向的方向传播，并且辐射光（9）从波导层（4）聚焦在波导层（4）外部的聚焦点处，通过在导电薄膜（2）和透明导电薄膜（2）之间施加电压信号而引起的辐射光（9）的偏转 6），产生聚焦点的位移。特别地，如果导电薄膜（2）或透明导电薄膜（6）被分成多个部分，并且电压信号被分别施加到这些部分，则聚焦点（F）可以移位到任何可选的点。

64. 发明授权

US09194545B2 Light emitting device and light sheet 有权
标题翻译：发光装置和灯片
公开(公告)号：US09194545B2
公开(公告)日：2015-11-24
申请号：US14342448
申请日：2012-09-03
申请人： Yasuhisa Inada , Seiji Nishiwaki
发明人： Yasuhisa Inada , Seiji Nishiwaki
IPC分类号： H05B33/02 , H01L51/50 , F21K99/00 , G02B5/02 , H01L51/52
CPC分类号： F21K9/50 , G02B5/0252 , G02B5/0278 , H01L51/5268
摘要： A light-emitting device disclosed herein includes: an emission layer; a diffraction grating structure including a diffraction grating; and a diffusion layer having a structure for diffusing light which is transmitted from one face to another face. The light going out from the emission layer has a central wavelength λ. The diffraction grating has a period p which is not less than 1.0λ and not more than 3.5λ. The diffusion layer has a haze of 80% or more and a total light transmittance of 80% or less.
摘要翻译：本文公开的发光器件包括：发射层; 包括衍射光栅的衍射光栅结构; 以及扩散层，其具有用于漫射从一个面传递到另一个面的光的结构。从发射层出射的光具有中心波长λ。衍射光栅具有不小于1.0λ且不大于3.5λ的周期p。扩散层的雾度为80％以上，总透光率为80％以下。

65. 发明授权

US08902514B2 Diffractive lens 有权
$Diffractive lens$
标题翻译：衍射透镜
公开(公告)号：US08902514B2
公开(公告)日：2014-12-02
申请号：US13378386
申请日：2011-04-28
申请人： Seiji Nishiwaki , Takamasa Ando , Tsuguhiro Korenaga
发明人： Seiji Nishiwaki , Takamasa Ando , Tsuguhiro Korenaga
IPC分类号： G02B3/08 , G02B5/18
CPC分类号： G02B5/1876
摘要： A diffractive lens according to the present invention has the function of focusing light. The diffractive lens has a side on which a diffraction grating is arranged on either an aspheric surface or a spherical surface in its effective area. The diffraction grating has n0 phase steps, which are arranged concentrically around the optical axis of the diffractive lens. And the radius rn of the circle formed by an nth one (where n is an integer that falls within the range of 0 through n0) of the phase steps as counted from the optical axis of the diffractive lens satisfies rn=√{square root over (a{(n+c+dn)−b(n+c+dn)m})}{square root over (a{(n+c+dn)−b(n+c+dn)m})} where a, b, c and m are constants that satisfy a>0, 0≦c 1, and 0.05 ⁢ b 0
摘要翻译：根据本发明的衍射透镜具有聚焦光的功能。衍射透镜在其有效区域中具有在非球面或球面上布置衍射光栅的一侧。衍射光栅具有相对于衍射透镜的光轴同心设置的n0个相位。并且由衍射透镜的光轴计数的由第n个（其中n是落入0到n0的范围内的整数）形成的圆的半径rn满足rn =√{平方根超过（a {（n + c + dn）-b（n + c + dn）m}）} {（n + c + dn）-b（n + c + dn）其中a，b，c和m是满足> 0,0和nlE; c <1，m> 1和0.05b 0

66. 发明申请

US20140263968A1 COLOR IMAGING DEVICE 有权
标题翻译：彩色成像装置
公开(公告)号：US20140263968A1
公开(公告)日：2014-09-18
申请号：US14353113
申请日：2012-06-04
申请人： Tatsuya Nakamura , Seiji Nishiwaki , Shinichi Wakabayashi
发明人： Tatsuya Nakamura , Seiji Nishiwaki , Shinichi Wakabayashi
IPC分类号： H01L27/146
CPC分类号： H01L27/14625 , H01L27/14623 , H01L27/14645 , H04N9/045 , H04N9/097
摘要： An imaging apparatus 10 according to one implementation of the present invention includes: a plurality of photodetectors 5a and 5b; a transparent layer 2 provided at the side of a light-receiving surface 15a, 15b of the photodetectors 5a and 5b; a plurality of spectroscopic portions 3 provided between a light-entering surface 2a of the transparent layer 2 and the photodetectors 5a and 5b; and a plurality of high refractive index transparent members 6 provided closer to the photodetectors 5a and 5b than are the spectroscopic portions 3. The high refractive index transparent members 6 have a higher refractive index than does the transparent layer 2.
摘要翻译：根据本发明的一个实施例的成像装置10包括：多个光电检测器5a和5b; 设置在光电检测器5a和5b的受光面15a，15b侧的透明层2; 设置在透明层2的光入射面2a与光检测器5a，5b之间的多个分光部3; 以及比分光部3更靠近光电探测器5a和5b设置的多个高折射率透明构件6.高折射率透明构件6具有比透明层2更高的折射率。

67. 发明授权

US08529114B2 Sheet and light emitting device 有权
标题翻译：板材和发光装置
公开(公告)号：US08529114B2
公开(公告)日：2013-09-10
申请号：US12522355
申请日：2008-11-12
申请人： Seiji Nishiwaki
发明人： Seiji Nishiwaki
IPC分类号： F21V7/04
CPC分类号： G02B5/0221 , G02B5/18 , H01L51/5268 , H05B33/22
摘要： A sheet and a light emitting device are provided which also emit light having an incident angle larger than or equal to a critical angle to significantly increase light extraction efficiency, prevent ambient light reflection, and suppress the occurrence of a distribution of light intensity varying depending on the direction and an imbalance in color. The light emitting device has a surface structure (13) in a surface adjacent to a light emitting element of a transparent substrate (5). The surface of the transparent substrate (5) is virtually divided into minute regions without a gap, the diameter of a largest circle inscribed in the minute region being 0.2 μm or more and 1.5 μm or less. Each minute region has a convex or concave shape in the surface of the transparent substrate 5. The proportions of the convex shapes and the concave shapes are P and 1−P, respectively, where P is within the range of 0.4 to 0.98.
摘要翻译：还提供了一种片材和发光装置，其还发射具有大于或等于临界角的入射角的光，以显着提高光提取效率，防止环境光反射，并且抑制发生根据方向和颜色不平衡。发光器件在与透明基板（5）的发光元件相邻的表面中具有表面结构（13）。透明基板（5）的表面实际上被分成无间隙的微小区域，微小区域内的最大圆的直径为0.2μm以上且1.5μm以下。每个微小区域在透明基板5的表面具有凸形或凹形。凸形和凹形的比例分别为P和1-P，其中P在0.4至0.98的范围内。

68. 发明授权

US08227966B2 Sheet and light emitting apparatus 有权
标题翻译：片和发光装置
公开(公告)号：US08227966B2
公开(公告)日：2012-07-24
申请号：US13057297
申请日：2009-12-21
申请人： Shin-ichi Wakabayashi , Seiji Nishiwaki , Masa-aki Suzuki
发明人： Shin-ichi Wakabayashi , Seiji Nishiwaki , Masa-aki Suzuki
IPC分类号： H05B33/00 , F21V9/00 , H01J5/16
CPC分类号： H01L51/5262 , G02B5/3025 , G09F13/22
摘要： A sheet of the present invention is a sheet which is to be used such that light from a light emitting body impinges on one of surfaces of the sheet and outgoes from the other surface. The other surface of the sheet includes a plurality of minute regions 13, a largest inscribed circle of the minute regions 13 having a diameter from 0.2 μm to 2 μm. Each of the plurality of minute regions 13 is adjoined by and surrounded by some other ones of the plurality of minute regions 13. The plurality of minute regions 13 include a plurality of minute regions 13a which are randomly selected from the plurality of minute regions 13 so as to constitute 20% to 80% of the minute regions 13 and a plurality of minute regions 13b which constitute the remaining portion of the minute regions 13. Light transmitted through the plurality of minute regions 13a and light transmitted through the plurality of minute regions 13b have a phase difference of π.
摘要翻译：本发明的片材是使用来自发光体的光照射在片材的一个表面上而从另一个表面出来的片材。片材的另一个表面包括多个微小区域13，具有0.2μm至2μm直径的微小区域13的最大内接圆。多个微小区域13中的每一个都与多个微小区域13中的其他一些微小区域13相邻并被其周围环绕。多个微小区域13包括从多个微小区域13中随机选择的多个微小区域13a 构成微小区域13的20％至80％和构成微小区域13的剩余部分的多个微小区域13b。透过多个微小区域13a的光和透过多个微小区域13b的光线具有＆pgr的相位差。

69. 发明申请

US20090274022A1 OPTICAL DISC DEVICE 失效
标题翻译：光盘设备
公开(公告)号：US20090274022A1
公开(公告)日：2009-11-05
申请号：US12095835
申请日：2006-12-06
申请人： Hiroaki Matsumiya , Seiji Nishiwaki
发明人： Hiroaki Matsumiya , Seiji Nishiwaki
IPC分类号： G11B7/00
CPC分类号： G11B7/0908 , G11B7/0901 , G11B7/094 , G11B7/0948 , G11B7/131 , G11B7/1353 , G11B7/13927
摘要： A focus error signal is generated by a first-order diffracted light diffracted by regions 23b, 24b on a hologram plane 2a, and an offset of a tracking error signal is canceled by first-order diffracted light diffracted by regions 21a, 22a, 23a, 24a on the hologram plane 2a. Consequently, even when there is an error in the substrate thicknesses of optical discs, jitter of a reproduction signal at a focus control point can be reduced by decreasing the distance between the focus control point and the point where the jitter is minimized.
摘要翻译：由全息图面2a上的区域23b，24b衍射的一级衍射光产生聚焦误差信号，通过区域21a，22a，23a衍射的一级衍射光消除跟踪误差信号的偏移， 24a在全息图平面2a上。因此，即使在光盘的基板厚度存在误差的情况下，也可以通过减小聚焦控制点与抖动最小的点之间的距离来减小聚焦控制点的再现信号的抖动。

70. 发明申请

US20050218309A1 Imaging device and photodetector for use in imaging 失效
标题翻译：用于成像的成像装置和光电探测器
公开(公告)号：US20050218309A1
公开(公告)日：2005-10-06
申请号：US11092431
申请日：2005-03-29
申请人： Seiji Nishiwaki , Michiyoshi Nagashima
发明人： Seiji Nishiwaki , Michiyoshi Nagashima
IPC分类号： G01J3/50 , G02B7/02 , G03B11/00 , H01J5/16 , H01J40/14 , H01L27/00 , H01L27/146 , H04N5/225 , H04N9/04
CPC分类号： H04N9/045 , H01L27/14623 , H01L27/14627 , H04N5/3415
摘要： There is provided an imaging device comprising: at least three color filters, including first to third color filters 9R, 9G, and 9B having respectively different filtering characteristics; at least three lens systems, including first to third lens systems 2R, 2G, and 2B respectively associated with the first to third color filters; and a photodetection section including a first photodetector 4R for receiving light transmitted through the first color filter 9R and the first lens system 2R, a second photodetector 4G for receiving light transmitted through the second color filter 9G and the second lens system 2G, and a third photodetector 4B for receiving light transmitted through the third color filter 9B and the third lens system 2B. Each of the first to third photodetectors 4R, 4G, and 4B has a two-dimensional array of photodetection cells such that centers of the photodetection cells are positioned at apices of triangles sharing respective sides with one another, where none of three corner angles of each triangle is equal to 90°.
摘要翻译：提供了一种成像装置，包括：至少三个滤色器，包括分别具有不同滤光特性的第一至第三滤色器9 R，9 G和9 B; 至少三个透镜系统，包括分别与第一至第三滤色器相关联的第一至第三透镜系统2 R，2 G和2B; 以及光检测部，其包括用于接收透过第一滤色器9R的光和第一透镜系统2R的第一光电检测器4R，用于接收透过第二滤色器9G的光的第二光电检测器4 G和第二透镜系统 2G，以及用于接收透过第三滤色器9B和第三透镜系统2B的光的第三光电检测器4B。第一至第三光电检测器4 R，4 G和4B中的每一个具有二维阵列的光电检测单元，使得光电检测单元的中心位于三角形共享的三角形的顶点处，其中每个三角形的三个角角度都不等于90°。

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