专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明申请

US20050237902A1 Optical disk apparatus 有权
标题翻译：光盘装置
公开(公告)号：US20050237902A1
公开(公告)日：2005-10-27
申请号：US11112998
申请日：2005-04-22
申请人： Seiji Nishiwaki , Kazuo Momoo , Jun-ichi Asada , Kenji Otani , Yusuke kanda
发明人： Seiji Nishiwaki , Kazuo Momoo , Jun-ichi Asada , Kenji Otani , Yusuke kanda
IPC分类号： G11B7/0065 , G11B7/135
CPC分类号： G11B7/1365 , G11B7/1353 , G11B7/1381
摘要： It is intended to provide an optical disk apparatus which detects a light amount greater than zero even when used in conjunction with an optical disk substrate having a large birefringence, so that it is possible to properly read a signal without errors and properly perform optical disk controls. The optical disk apparatus includes: a light source for emitting light; an objective lens for converging the light onto a signal surface of an optical disk; a polarized beam diffraction element for diffracting the light reflected from the optical disk; a photodetector for detecting the light diffracted from the polarized beam diffraction element; and a wavelength plate disposed between the optical disk and the polarized beam diffraction element. The wavelength plate has a two-dimensional array of a plurality of birefringent regions including first and second regions, the first and second regions differing in birefringent phase difference and/or optic axes from each other, and the plurality of birefringent regions including the first and second regions cause the light to have different polarization states.
摘要翻译：即使在与具有大双折射性的光盘基板结合使用的情况下，也能够提供大于零的光量的光盘装置，从而可以正确地读取无误信号，适当地执行光盘控制。光盘装置包括：用于发光的光源; 用于将光聚焦到光盘的信号表面上的物镜; 用于衍射从光盘反射的光的偏振光束衍射元件; 用于检测从偏振光束衍射元件衍射的光的光检测器; 以及布置在光盘和偏振光束衍射元件之间的波长板。波长板具有包括第一和第二区域的多个双折射区域的二维阵列，第一和第二区域在双折射相位差和/或光轴上彼此不同，并且多个双折射区域包括第一和第二区域第二区域导致光具有不同的偏振状态。

42. 发明申请

US20050219699A1 Color separator and imager 失效
标题翻译：彩色分离器和成像仪
公开(公告)号：US20050219699A1
公开(公告)日：2005-10-06
申请号：US11092269
申请日：2005-03-29
申请人： Seiji Nishiwaki , Michiyoshi Nagashima
发明人： Seiji Nishiwaki , Michiyoshi Nagashima
IPC分类号： G02B27/10 , G02B27/28 , G02F1/13 , G02F1/1335 , G02F1/13363 , G02F1/139 , H04N5/225 , H04N9/097
CPC分类号： H04N9/097 , G02F1/1396 , G02F1/1397 , G02F2001/133638 , G02F2201/305 , G02F2203/34 , H04N9/07
摘要： A color separator includes a polarization converting section for converting an incoming light ray into a linearly polarized light ray such that the polarization direction of the linearly polarized light ray is selectable from a number of predetermined directions, and a diffracting section, which is arranged so as to receive the linearly polarized light ray that has gone out of the polarization converting section and which produces a zero-order light ray in which one of multiple different wavelength components is selectively weakened according to the polarization direction at least.
摘要翻译：色分离器包括：偏振转换部分，用于将入射光线转换为线偏振光，使得线偏振光的偏振方向可从多个预定方向选择;以及衍射部分，其布置为以接收从偏振转换部分出来的线偏振光，并产生至少根据偏振方向选择性地削弱多个不同波长分量中的一个的零级光线。

43. 发明授权

US06909685B2 Optical disk device having light converging means which marks plural signal mark positions in a direction substantially perpendicular to tracks 失效
标题翻译：具有聚光装置的光盘装置，其在与轨道基本垂直的方向上标记多个信号标记位置
公开(公告)号：US06909685B2
公开(公告)日：2005-06-21
申请号：US09788367
申请日：2001-02-21
申请人： Seiji Nishiwaki , Kazuo Momoo , Junji Nagaoka
发明人： Seiji Nishiwaki , Kazuo Momoo , Junji Nagaoka
IPC分类号： G11B7/24 , G11B7/004 , G11B7/007 , G11B7/013 , G11B7/09 , G11B7/13 , G11B7/135 , G11B7/00
CPC分类号： G11B7/24085 , G11B7/007 , G11B7/00718 , G11B7/0901 , G11B7/0943 , G11B7/131 , G11B7/133 , G11B7/1353 , G11B7/1369 , G11B7/1381 , G11B7/24088
摘要： An optical disk device has a light source which emits light; and light converging means of, in each of signal mark forming regions, each of lands, or each of grooves of an optical disk, converging the light from the light source onto a signal surface of the optical disk with selectively positioning a signal mark at any one of plural positions which are arranged in a direction that is substantially perpendicular to tracks, each of the signal mark forming regions surrounded by adjacent two of boarder lines which are between two the tracks on the signal surface of the optical disk, and which are substantially parallel to the tracks, and each of which substantially divides an area between adjacent tracks in two parts.
摘要翻译：光盘装置具有发光的光源; 以及在每个信号标记形成区域中的光会聚装置，每个光阑的凹槽或每个凹槽中，将来自光源的光会聚到光盘的信号表面上，并选择性地将信号标记定位在任何多个位置中的一个被布置在基本上垂直于轨道的方向上，每个信号标记形成区被围绕在光盘的信号表面上的两个轨道之间的相邻的两个边缘线包围，并且基本上平行于轨道，并且其中的每一个在两个部分中基本上划分相邻轨道之间的区域。

44. 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。

45. 发明授权

US06674709B1 Optical head apparatus 失效
标题翻译：光头设备
公开(公告)号：US06674709B1
公开(公告)日：2004-01-06
申请号：US09553100
申请日：2000-04-20
申请人： Junichi Asada , Seiji Nishiwaki , Yuichi Takahashi , Kenji Nagashima , Hiroaki Matsumiya , Youichi Saitoh , Kazuo Momoo
发明人： Junichi Asada , Seiji Nishiwaki , Yuichi Takahashi , Kenji Nagashima , Hiroaki Matsumiya , Youichi Saitoh , Kazuo Momoo
IPC分类号： G11B700
CPC分类号： G11B7/1263 , G11B7/1362 , G11B7/1378 , G11B7/1398 , G11B2007/13725
摘要： To implement light quantity monitoring with high frequency responsivity and correction of astigmatic differences of a semiconductor laser with a simple configuration with fewer parts. Of the output from a semiconductor laser light source, a peripheral component is entered by a light reflection element into an anterior light monitoring photodetector formed in the vicinity of a semiconductor laser light source. Furthermore, the surface of the reflection sphere of the light reflection element is anamorphic, and thus condensed to an appropriate size on the photodetector without being focused, providing high frequency responsivity. Furthermore, the light reflection element is inclined at a predetermined angle to cancel out astigmatic differences of the optical semiconductor laser light source. In addition, the photodetector is placed so that reflected light is bent by an inclination of the light reflection element, reducing the amount of parallel displacement during adjustment of the light reflection element.
摘要翻译：实现具有高频响应性的光量监测和半导体激光器的散光差异校正，具有更少部件的简单配置。在半导体激光源的输出中，通过光反射元件将外围部件输入到形成在半导体激光光源附近的前光监视光检测器中。此外，光反射元件的反射球的表面是变形的，并因此在不被聚焦的情况下在光电检测器上聚光到适当的尺寸，提供高频响应度。此外，光反射元件以预定角度倾斜以抵消光半导体激光光源的像散差。此外，光电检测器被放置成使得反射光被光反射元件的倾斜弯曲，从而减少了光反射元件调节期间的平行位移量。

46. 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。

47. 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。

48. 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。

49. 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

50. 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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式