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51. 发明申请

US20050179786A1 Imaging method and imaging apparatus 失效
标题翻译：成像方法和成像装置
公开(公告)号：US20050179786A1
公开(公告)日：2005-08-18
申请号：US11044523
申请日：2005-01-27
申请人： Tsuguhiro Korenaga , Seiji Nishiwaki , Michiyoshi Nagashima
发明人： Tsuguhiro Korenaga , Seiji Nishiwaki , Michiyoshi Nagashima
IPC分类号： G02F1/133 , G09G3/36 , H04N5/225
CPC分类号： H04N5/2254 , H04N5/349
摘要： In a method for forming an image of a subject on a solid-state imaging device, a first time period for splitting a light beam from a subject into a plurality of light beams that have different polarization directions and then combining the plurality of light beams to form a single subject image on the solid-state imaging device and a second time period for splitting the light beam from the subject into the plurality of light beams that have different polarization directions and forming a plurality of subject images that overlap each other partially on the solid-state imaging device are switched time-wise. A first image information on the single subject image is obtained based on pieces of signal information in the first time period, and a second image information on one of the plurality of subject images is calculated by using and computing pieces of signal information in the second time period. Then, the high-resolution image of the subject is achieved by using the first image information and the second image information. In this way, it is possible to obtain an image with a high resolution and a reduced noise with substantially no loss of the light beam from the subject.
摘要翻译：在用于在固态成像装置上形成被摄体的图像的方法中，将用于将来自被摄体的光束分割为具有不同偏振方向的多个光束然后将多个光束组合的第一时间段在固态成像装置上形成单个被摄体图像，以及第二时间段，用于将来自被摄体的光束分成具有不同偏振方向的多个光束，并且形成多个相互重叠的被摄体图像固态成像装置按时间方式进行切换。基于第一时间段中的信号信息获得关于单个被摄体图像的第一图像信息，并且通过在第二时间中使用和计算信号信息来计算关于多个被摄体图像之一的第二图像信息期。然后，通过使用第一图像信息和第二图像信息来实现被摄体的高分辨率图像。以这种方式，可以获得具有高分辨率和降低的噪声的图像，而基本上没有来自被摄体的光束的损失。

52. 发明申请

US20050157634A1 Optical disk device, optical disk, data recording method, and data reproducing method 失效
标题翻译：光盘装置，光盘，数据记录方法和数据再现方法
公开(公告)号：US20050157634A1
公开(公告)日：2005-07-21
申请号：US11072292
申请日：2005-03-07
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。

53. 发明授权

US06822934B2 Optical disc apparatus for finding a tracking error for an optical disk 失效
标题翻译：用于找到光盘的跟踪误差信号的光盘装置
公开(公告)号：US06822934B2
公开(公告)日：2004-11-23
申请号：US09884890
申请日：2001-06-19
申请人： Seiji Nishiwaki , Yoichi Saito , Kazuo Momoo , Kenji Nagashima
发明人： Seiji Nishiwaki , Yoichi Saito , Kazuo Momoo , Kenji Nagashima
IPC分类号： G11B700
CPC分类号： G11B7/0906 , G11B7/0901 , G11B7/0909 , G11B7/0943 , G11B7/131 , G11B7/1353 , G11B7/1356 , G11B7/1365 , G11B7/1372 , G11B7/1381
摘要： An optical disc apparatus capable of mounting an optical disc includes a light source for emitting light; an objective lens for collecting the light emitted by the light source on the optical disc; a first light distribution section integrally movable with the objective lens, the first light distribution section including a first area and a second area, the first light distribution section outputting the light reflected by the optical disc and transmitted through the first area or the second area as transmission light, outputting the light reflected by the optical disc and diffracted by the first area as first diffraction light, and outputting the light reflected by the optical disc and diffracted by the second area as second diffraction light; a transmission light detection section for detecting the transmission light and outputting a TE1 signal indicating an offset of the detected transmission light; a first diffraction light detection section for detecting the first diffraction light and the second diffraction light, and outputting a TE2 signal indicating a difference between a light amount of the detected first diffraction light and a light amount of the detected second diffraction light; and a control device for generating a tracking error signal for the optical disc based on the TE1 signal and the TE2 signal.
摘要翻译：能够安装光盘的光盘装置包括用于发光的光源; 用于收集由光源在光盘上发射的光的物镜; 所述第一配光部与所述物镜一体地移动，所述第一配光部包括第一区域和第二区域，所述第一配光部输出由所述光盘反射并经由所述第一区域或所述第二区域透射的光，透射光，输出由光盘反射并被第一区域衍射的光作为第一衍射光，并输出由光盘反射并被第二区域衍射的光作为第二衍射光; 发送光检测部，用于检测发送光并输出表示所检测的发送光的偏移的TE1信号; 第一衍射光检测部分，用于检测第一衍射光和第二衍射光，并输出指示检测到的第一衍射光的光量与检测到的第二衍射光的光量之间的差的TE2信号; 以及用于基于TE1信号和TE2信号产生用于光盘的跟踪误差信号的控制装置。

54. 发明授权

US06504660B1 Prism and manufacturing method thereof, optical beam shaping apparatus and optical head device utilizing such prism, and optical beam shaping method 失效
标题翻译：棱镜及其制造方法，光束成形装置和利用这种棱镜的光学头装置，以及光束成形方法
公开(公告)号：US06504660B1
公开(公告)日：2003-01-07
申请号：US09668826
申请日：2000-09-22
申请人： Seiji Nishiwaki , Tetsuo Saimi
发明人： Seiji Nishiwaki , Tetsuo Saimi
IPC分类号： G02B504
CPC分类号： G02B5/04
摘要： A prism includes: a first portion made of a first material having a wavelength dependency in a refractive index; and a second portion adhered to the first portion, the second portion being made of a second material having a wavelength dependency in a refractive index which is different from the wavelength dependency in the refractive index of the first material. The first portion and the second portion have shapes such that the wavelength dependency in the refractive index of the first portion and the wavelength dependency in the refractive index of the second portion are substantially cancelled by each other.
摘要翻译：棱镜包括：由折射率波长依赖性的第一材料制成的第一部分; 并且第二部分粘附到第一部分，第二部分由具有与第一材料的折射率的波长依赖性不同的折射率的波长依赖性的第二材料制成。第一部分和第二部分具有这样的形状，使得第一部分的折射率的波长依赖性和第二部分的折射率的波长依赖性基本上被抵消。

55. 发明授权

US06459664B1 Optical disc tilt control apparatus 有权
标题翻译：光盘倾斜控制装置
公开(公告)号：US06459664B1
公开(公告)日：2002-10-01
申请号：US09386458
申请日：1999-08-31
申请人： Shin-ichi Yamada , Masayoshi Abe , Hiroyuki Yamaguchi , Kouichi Takamine , Seiji Nishiwaki
发明人： Shin-ichi Yamada , Masayoshi Abe , Hiroyuki Yamaguchi , Kouichi Takamine , Seiji Nishiwaki
IPC分类号： G11B700
CPC分类号： G11B7/00718 , G11B7/00745 , G11B7/0901 , G11B7/0956
摘要： An optical disc apparatus corrects the tilting of the optical disc with a high accuracy using first and second tracking error signals. A first tracking error signal, which is an output of subtractor (125), obtained by the push-pull method is corrected by detecting a second tracking error signal. The second tracking error signal is obtained by using the difference of amplitude of first and second signals, which are outputs of adder (130). The first signal is obtained when the light beam passes over a first pit sequence formed in a position offset in one direction orthogonal to the track of disc (100). The second signal is obtained when the light beam passes over a second pit sequence formed in a position offset in the other direction orthogonal to the track.
摘要翻译：光盘装置使用第一和第二跟踪误差信号以高精度来校正光盘的倾斜。通过推挽方法获得的作为减法器（125）的输出的第一跟踪误差信号通过检测第二跟踪误差信号被校正。通过使用作为加法器（130）的输出的第一和第二信号的幅度差来获得第二跟踪误差信号。当光束通过形成在与盘（100）的轨道正交的一个方向上偏移的位置的第一凹坑序列时，获得第一信号。当光束通过形成在与轨道正交的另一方向偏移的位置的第二凹坑序列时，获得第二信号。

56. 发明授权

US06327238B1 Optical disk device 有权
标题翻译：光盘装置
公开(公告)号：US06327238B1
公开(公告)日：2001-12-04
申请号：US09140526
申请日：1998-08-27
申请人： Seiji Nishiwaki , Tetsuo Saimi
发明人： Seiji Nishiwaki , Tetsuo Saimi
IPC分类号： G02B1300
CPC分类号： G11B7/1359 , G02B5/04 , G02B17/045
摘要： A beam is emitted from a radiation source such as a semiconductor laser and is converted to parallel light by a collimator lens. The light enters a surface A of a prism at an incidence angle &phgr; (an angle between the normal line of the surface A and the incident light), thus obtaining light refracted at a refraction angle &psgr; (an angle between the normal line and the refracted light). This refracted light is incident on the surface B of the prism to be reflected totally from this surface, and the reflected light is incident on the surface C of the prism. Then, the reflected light enters the surface B of the prism again and is transmitted through this surface. The transmitted light is converted to convergent light by an objective lens. The convergent light is transmitted through a surface of an optical disk substrate, thus being focused on a signal surface. An optical disk device that is thin beyond the physical limitations without changing the working distance and the numerical aperture can be obtained.
摘要翻译：从诸如半导体激光器的辐射源发射光束，并通过准直透镜转换为平行光。光以入射角phi（表面A的法线与入射光之间的角度）进入棱镜的表面A，从而获得以折射角psi（法线和折射角之间的角度）折射的光光）。该折射光入射到棱镜的表面B，从该表面全反射，反射光入射到棱镜的表面C. 然后，反射光再次进入棱镜的表面B并透过该表面。透射光被物镜转换成会聚光。会聚光透过光盘基板的表面，从而被聚焦在信号表面上。可以获得超过物理限制而不改变工作距离和数值孔径的光盘装置。

57. 发明授权

US06307827B1 Optical device and information recording and reproducing device 失效
标题翻译：光学设备和信息记录和再现设备
公开(公告)号：US06307827B1
公开(公告)日：2001-10-23
申请号：US09141211
申请日：1998-08-27
申请人： Seiji Nishiwaki
发明人： Seiji Nishiwaki
IPC分类号： G11B700
CPC分类号： G11B7/1387 , G01Q60/22 , G01Q80/00 , G11B7/122 , G11B7/124 , G11B7/131 , G11B7/1353 , G11B7/1384 , G11B2007/13727
摘要： An optical device and an information recording and reproducing device, which comprise a radiation source, a transparent substrate, a waveguide layer provided on the surface of the transparent substrate opposite to the radiation source and an optical coupling means that is provided on the surface of the waveguide layer or on the interface between the transparent substrate and the waveguide layer and that has a concentric circular periodic structure with an optical axis of the radiation source in the center; wherein the waveguide layer has a cutoff part at the center of the periodic structure; the light from the radiation source excites a guided light that propagates from the periphery to the center of the periodic structure in the waveguide layer by the optical coupling means; and a part of the guided light leaks out, at the cutoff part, to a signal surface on a flat substrate provided adjacent to the waveguide layer. With such a structure, an optical device and an optical information recording and reproducing device can greatly improve the coefficiency of light utilization and largely enhance the signal reproducing sensitivity.
摘要翻译：一种光学装置和信息记录和再现装置，包括辐射源，透明基板，设置在与辐射源相对的透明基板的表面上的波导层，以及设置在该表面上的光耦合装置波导层或在透明基板和波导层之间的界面上，并且具有同心圆周期结构，辐射源的光轴在中心; 其中所述波导层在所述周期性结构的中心具有截止部分; 来自辐射源的光通过光耦合装置激发在波导层中从周边传播到周期结构的中心的引导光; 并且一部分引导光在截止部分泄漏到与波导层相邻设置的平坦基板上的信号表面。利用这种结构，光学装置和光学信息记录和再现装置可以大大提高光利用的系数，并且大大提高信号再现灵敏度。

58. 发明授权

US5892741A Information recording medium and tracking error signal detection apparatus and magnetic recording apparatus and method of adjusting the magnetic recording apparatus 失效
标题翻译：信息记录介质和跟踪误差信号检测装置以及磁记录装置和调整磁记录装置的方法
公开(公告)号：US5892741A
公开(公告)日：1999-04-06
申请号：US676540
申请日：1996-07-09
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： G11B5/016 , G11B5/55 , G11B5/596 , G11B7/09 , G11B7/00
CPC分类号： G11B5/59627 , G11B5/5556 , G11B5/59677 , G11B5/016 , G11B5/5565 , G11B7/0903 , G11B7/0941
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 .pi./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。

59. 发明授权

US5684900A Wavelength locking device, beam collimating device, and optical disk apparatus 失效
标题翻译：波长锁定装置，光束准直装置和光盘装置
公开(公告)号：US5684900A
公开(公告)日：1997-11-04
申请号：US550634
申请日：1995-10-31
申请人： Seiji Nishiwaki , Junichi Asada
发明人： Seiji Nishiwaki , Junichi Asada
IPC分类号： G02B6/12 , G02B6/34 , G11B7/12 , G11B7/125 , H01S5/065 , H01S5/14 , G02B6/26
CPC分类号： G11B7/126 , G02B6/34 , G11B7/124 , H01S5/065 , H01S5/141 , G02B2006/12107
摘要： A waveguide layer is formed on a transparent substrate disposed to cross an optical axis perpendicularly, and on the waveguide layer, a concentric circular grating coupler is disposed so that the optical axis passes the center. A light beam radiated from a semiconductor laser passes through the transparent substrate and enters the waveguide layer. Light beams enter the respective positions of the grating coupler are excited and move from the periphery to the center, and the light beams pass through the center and become waveguide light beams. The waveguide light beam is the reverse wave of the waveguide light beam inputted at the transmittance position. Therefore, the radiant beam radiated from the grating coupler also becomes a reverse wave inputted at the irradiating position, and is accurately fed back to the semiconductor laser. The laser wavelength is locked since the radiant beam has wavelength selectivity.
摘要翻译：在设置成垂直于光轴的透明基板上形成波导层，并且在波导层上设置有同轴圆形光栅耦合器，使得光轴通过中心。从半导体激光器照射的光束穿过透明基板并进入波导层。光束进入光栅耦合器的相应位置被激发并从周边移动到中心，并且光束穿过中心并变成波导光束。波导光束是在透射率位置处输入的波导光束的反向波。因此，从光栅耦合器辐射的辐射束也成为在照射位置输入的反向波，并被精确地反馈给半导体激光器。激光波长被锁定，因为辐射束具有波长选择性。

60. 发明授权

US5495462A Light beam splitting apparatus 失效
标题翻译：光束分束装置
公开(公告)号：US5495462A
公开(公告)日：1996-02-27
申请号：US258203
申请日：1994-06-10
申请人： Seiji Nishiwaki , Tetsuo Kitagawa , Junichi Asada , Kiyoko Ooshima
发明人： Seiji Nishiwaki , Tetsuo Kitagawa , Junichi Asada , Kiyoko Ooshima
IPC分类号： G02B6/14 , G02B6/34 , G11B7/12 , G11B7/135 , G11B7/00
CPC分类号： G02B6/14 , G02B6/34 , G11B7/124 , G11B7/135
摘要： When a laser beam enters into a grating coupler at a right angle, a guided wave with a wave mode corresponding to an incident angle can be generated. Although the guided wave is a light beam in single mode, the waveguide mode is deflected by passing through a step-wise structure and is converted into several guided waves having several modes. When the guided waves are radiated from a straight output grating coupler, the radiant angle is dependent upon the waveguide mode, so beams are radiated in different directions according to their respective waveguide modes. Therefore, a guided wave in zero-order mode outputs a radiant beam having a larger radiant angle, while a guided wave in first-order mode outputs a radiant beam having a smaller radiant angle.
摘要翻译：当激光束以直角进入光栅耦合器时，可以产生具有对应于入射角的波形模式的导波。虽然导波是单模中的光束，但是波导模式通过逐步结构而被偏转，并被转换为具有若干模式的几个导波。当从直线输出光栅耦合器辐射导波时，辐射角取决于波导模式，因此根据各自的波导模式，波束沿不同方向辐射。因此，零阶模式的导波输出具有较大辐射角的辐射束，而一阶模式的导波输出具有较小辐射角的辐射束。

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