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51. 发明授权

US07215476B2 Optical pickup, optical information recording/reproducing apparatus using the same, and phase variable wave plate used in the pickup and the apparatus 有权
标题翻译：光拾取器，使用其的光学信息记录/再现装置以及在拾取器和装置中使用的相位可变波片
公开(公告)号：US07215476B2
公开(公告)日：2007-05-08
申请号：US10975308
申请日：2004-10-27
申请人： Yasuo Kitaoka , Ken'ichi Kasazumi , Katsuhiko Kumagawa , Kazuhisa Yamamoto , Hidenori Wada
发明人： Yasuo Kitaoka , Ken'ichi Kasazumi , Katsuhiko Kumagawa , Kazuhisa Yamamoto , Hidenori Wada
IPC分类号： G02B27/30 , G02B27/14 , G11B7/00
CPC分类号： G11B7/13925 , G11B7/1275 , G11B7/1362 , G11B7/1367 , G11B7/1369 , G11B2007/0006
摘要： Laser beams respectively emitted from a SHG blue laser unit and a red semiconductor laser unit that have photo detectors respectively are turned into parallel lights by a collimator lens and then coupled by a dielectric multi-layer film mirror so as to be propagated on the same optical axis. The dielectric multi-layer film mirror is configured so as to transmit light with a wavelength of 500 nm or shorter and reflect light with a wavelength of 500 nm or longer for both P wave and S wave. The lights that are transmitted and reflected by the dielectric multi-layer film mirror pass through a polarizing hologram and a phase variable wave plate and are focused on an optical disk by an objective lens. In this manner, a simple configuration can realize a compatibility with many types of optical disks and a stable signal detection even when using a polarizing optical detection system.
摘要翻译：分别从具有光电检测器的SHG蓝色激光单元和红色半导体激光单元分别发射的激光束通过准直透镜转换为平行光，然后通过电介质多层膜镜耦合，以便在相同的光学轴。介电多层膜反射镜被配置为透射波长为500nm或更短的光，并且对于P波和S波都反射波长为500nm或更长的光。由电介质多层膜镜透射和反射的光通过偏振全息图和相位可变波片，并通过物镜聚焦在光盘上。以这种方式，即使使用偏振光学检测系统，简单的配置也可以实现与许多类型的光盘的兼容性和稳定的信号检测。

52. 发明申请

US20060251132A1 Ultrashort pulsed laser and optical head using the same 审中-公开
公开(公告)号：US20060251132A1
公开(公告)日：2006-11-09
申请号：US11484222
申请日：2006-07-11
申请人： Yasuo Kitaoka , Kazuhisa Yamamoto
发明人： Yasuo Kitaoka , Kazuhisa Yamamoto
IPC分类号： H01S3/30 , H01S3/091 , H01S3/092
CPC分类号： H01S3/1118 , H01S3/09415
摘要： An ultrashort pulsed laser device includes: a pump laser diode having linear polarization; a solid laser medium oscillating with linear polarization; an optical fiber maintaining a polarization direction; and a saturable absorber mirror. The solid laser medium is disposed between the optical fiber and the saturable absorber mirror. Laser light emitted from the pump laser diode optically is coupled with a first end face of the optical fiber, and laser light emitted from a second end face of the optical fiber pumps the solid laser medium. The first end face of the optical fiber and the saturable absorber mirror constitute a laser resonator. With this configuration, mode lock can be realized stably at a repetition frequency of several hundred MHz.

53. 发明申请

US20050058027A1 Optical pickup, optical information recording/reproducing apparatus using the same, and phase variable wave plate used in the pickup and the apparatus 有权
标题翻译：光拾取器，使用其的光学信息记录/再现装置以及在拾取器和装置中使用的相位可变波片
公开(公告)号：US20050058027A1
公开(公告)日：2005-03-17
申请号：US10975308
申请日：2004-10-27
申请人： Yasuo Kitaoka , Ken'ichi Kasazumi , Katsuhiko Kumagawa , Kazuhisa Yamamoto , Hidenori Wada
发明人： Yasuo Kitaoka , Ken'ichi Kasazumi , Katsuhiko Kumagawa , Kazuhisa Yamamoto , Hidenori Wada
IPC分类号： G11B7/00 , G11B7/125 , G11B7/135 , G11B11/00
CPC分类号： G11B7/13925 , G11B7/1275 , G11B7/1362 , G11B7/1367 , G11B7/1369 , G11B2007/0006
摘要： Laser beams respectively emitted from a SHG blue laser unit and a red semiconductor laser unit that have photo detectors respectively are turned into parallel lights by a collimator lens and then coupled by a dielectric multi-layer film mirror so as to be propagated on the same optical axis. The dielectric multi-layer film mirror is configured so as to transmit light with a wavelength of 500 nm or shorter and reflect light with a wavelength of 500 nm or longer for both P wave and S wave. The lights that are transmitted and reflected by the dielectric multi-layer film mirror pass through a polarizing hologram and a phase variable wave plate and are focused on an optical disk by an objective lens. In this manner, a simple configuration can realize a compatibility with many types of optical disks and a stable signal detection even when using a polarizing optical detection system.
摘要翻译：分别从具有光电检测器的SHG蓝色激光单元和红色半导体激光单元分别发射的激光束通过准直透镜转换为平行光，然后通过电介质多层膜镜耦合，以便在相同的光学轴。介电多层膜反射镜被配置为透射波长为500nm或更短的光，并且对于P波和S波都反射波长为500nm或更长的光。由电介质多层膜镜透射和反射的光通过偏振全息图和相位可变波片，并通过物镜聚焦在光盘上。以这种方式，即使使用偏振光学检测系统，简单的配置也可以实现与许多类型的光盘的兼容性和稳定的信号检测。

54. 发明授权

US06392979B1 Optical pickup and optical disk apparatus using the same 失效
标题翻译：光拾取器和使用其的光盘装置
公开(公告)号：US06392979B1
公开(公告)日：2002-05-21
申请号：US09009436
申请日：1998-01-20
申请人： Kazuhisa Yamamoto , Yasuo Kitaoka , Ayumu Tsujimura , Masahiro Kume
发明人： Kazuhisa Yamamoto , Yasuo Kitaoka , Ayumu Tsujimura , Masahiro Kume
IPC分类号： G11B700
CPC分类号： B82Y20/00 , G11B7/126 , G11B7/127 , G11B7/1381 , G11B7/24085 , H01S5/0211 , H01S5/0213 , H01S5/028 , H01S5/1064 , H01S5/125 , H01S5/22 , H01S5/2231 , H01S5/343 , H01S5/34333 , H01S5/347
摘要： Laser light emitted from the wavelength-locked GaN semiconductor laser is collimated through a collimation lens, led through a polarization beam splitter and a ¼ wavelength plate, and converged by a focus lens so as to be radiated on pits formed in an optical disk medium. The signal light from the optical disk medium is collimated by the focus lens, and has its polarization direction turned by the ¼ wavelength plate by 90° relative to its polarization direction before being returned from the optical disk medium. As a result, the signal light is reflected from the polarization beam splitter so as to be converged on the optical detector by the focus lens.
摘要翻译：从波长锁定的GaN半导体激光器发射的激光通过准直透镜准直，通过偏振分束器和1/4波长板，并被聚焦透镜会聚，以便辐射到形成在光盘介质中的凹坑上。来自光盘介质的信号光被聚焦透镜准直，并且在从光盘介质返回之前，其偏振方向相对于其偏振方向由1/4波片转动90度。结果，信号光从偏振分束器反射，以便被聚焦透镜会聚在光学检测器上。

55. 发明授权

US07494286B2 Laser module and method for manufacturing the same 失效
标题翻译：激光模块及其制造方法
公开(公告)号：US07494286B2
公开(公告)日：2009-02-24
申请号：US10534438
申请日：2003-11-12
申请人： Akihiro Morikawa , Toshifumi Yokoyama , Yasuo Kitaoka , Kazuhisa Yamamoto
发明人： Akihiro Morikawa , Toshifumi Yokoyama , Yasuo Kitaoka , Kazuhisa Yamamoto
IPC分类号： G02B6/36 , G02B6/12
CPC分类号： G02B6/42 , G02B6/4239 , G02F1/3775 , H01S5/0092 , H01S5/02208 , H01S5/02252
摘要： Efficient coupling structures are important for the realization of reliable and economical integrated optical circuit applications. This paper presents a new approach for the simulation of an anisotropic plasma etching process in silicon based on a string point model as well as the realization and the results of etching processes in silicon, silicon dioxide, silicon oxinitride and silicon nitride which are fundamental for the fabrication of coupling structures. The connections to active and passive components were fabricated using plasma etching and deposition processes which are compatible with C-MOS or BIC-MOS technology. The realized waveguide-detector structures with vertical and horizontal silicon PIN-diodes exhibit efficiencies close to 90% for wavelength below 1.1 micrometers. The diodes can detect signals of modulation frequencies of more than 400 MHz due to horizontal light injection and capacitances less than 1 pF. Fiber-detector coupling structures with U-grooves for the fiber alignment containing such detectors show similar results. The necessary accuracy of the etched depth of the U-grooves for fiber-detector coupling is +/−2 micrometers in contrast to a fiber-waveguide coupling which requires a reproducible accuracy of the process better than 0.5 micrometers. A reduction of coupling losses due to the necessary close tolerances is accomplished by waveguide tapers. The simulation, realization and results for such structures are presented in the paper. Also laser diode—fiber connections require extremely close tolerances. The design of a micro-optical bench realized by plasma etching and a selfaligning soldering process is presented, which allows such tolerances.
摘要翻译：高效的耦合结构对于实现可靠且经济的集成光电路应用很重要。本文提出了一种基于串点模型模拟硅中各向异性等离子体蚀刻工艺的新方法，以及硅，二氧化硅，氮氧化硅和氮化硅中蚀刻过程的实现和结果，这些都是基于耦合结构的制造。使用与C-MOS或BIC-MOS技术兼容的等离子体蚀刻和沉积工艺制造与主动和无源部件的连接。实现的具有垂直和水平硅PIN二极管的波导检测器结构对于低于1.1微米的波长表现出接近90％的效率。由于水平光注入和小于1 pF的电容，二极管可以检测超过400 MHz的调制频率信号。具有用于包含这种检测器的光纤对准的U形槽的光纤检测器耦合结构显示相似的结果。与光纤 - 波导耦合相比，用于光纤 - 检测器耦合的U形槽的蚀刻深度所需的精度为+/- 2微米，这需要该工艺的可重复精度优于0.5微米。由于必要的紧公差导致的耦合损耗的减小是通过波导锥度实现的。本文提出了这种结构的仿真，实现和结果。激光二极管 - 光纤连接也需要极其公差。提出了通过等离子体蚀刻和自对准焊接工艺实现的微光学台架的设计，其允许这种公差。

56. 发明申请

US20060034570A1 Laser module and its fabrication method 失效
标题翻译：激光模组及其制作方法
公开(公告)号：US20060034570A1
公开(公告)日：2006-02-16
申请号：US10534438
申请日：2003-11-12
申请人： Akihiro Morikawa , Toshifumi Yokoyama , Yasuo Kitaoka , Kazuhisa Yamamoto
发明人： Akihiro Morikawa , Toshifumi Yokoyama , Yasuo Kitaoka , Kazuhisa Yamamoto
IPC分类号： G02B6/36
CPC分类号： G02B6/42 , G02B6/4239 , G02F1/3775 , H01S5/0092 , H01S5/02208 , H01S5/02252
摘要： A laser module includes: a sub-mount; a semiconductor laser secured to a surface of the sub-mount; and an optical waveguide device joined to the surface of the sub-mount by an adhesive layer so that the optical waveguide device is coupled optically with the semiconductor laser. A first groove is formed at the surface of the sub-mount at a region corresponding to an incident end side of the optical waveguide device, the first groove being formed parallel to an outgoing end face of the semiconductor laser with a predetermined space therefrom. The adhesive layer is formed so that an end of the adhesive layer on the incident end side of the optical waveguide device is positioned within a range from a position abutting with a distal edge of the first groove distant from the semiconductor laser to an inside of the first groove and does not contact with the outgoing end face of the semiconductor laser. Since the adhesive layer can be positioned within a preferable range, coupling misalignment resulting from distortion due to a temperature change can be suppressed.
摘要翻译：激光模块包括：子安装座; 半导体激光器，其固定到所述副安装座的表面; 以及通过粘合层与子座的表面接合的光波导器件，使得光波导器件与半导体激光器光耦合。在与所述光波导装置的入射端侧对应的区域的所述副安装座的表面形成有第一槽，所述第一槽与所述半导体激光器的出射端面平行地形成有预定的间隔。粘合剂层形成为使得光波导装置的入射端侧的粘合剂层的端部位于与远离半导体激光器的第一凹槽的远端边缘邻接的位置的范围内并且不与半导体激光器的出射端面接触。由于粘合剂层可以位于优选范围内，所以可以抑制由于温度变化引起的变形引起的耦合失准。

57. 发明申请

US20050030880A1 Optical pickup, optical information recording/reproducing apparatus using the same, and phase variable wave plate used in the pickup and the apparatus 有权
公开(公告)号：US20050030880A1
公开(公告)日：2005-02-10
申请号：US10873931
申请日：2004-06-22
申请人： Yasuo Kitaoka , Ken'ichi Kasazumi , Katsuhiko Kumagawa , Kazuhisa Yamamoto , Hidenori Wada
发明人： Yasuo Kitaoka , Ken'ichi Kasazumi , Katsuhiko Kumagawa , Kazuhisa Yamamoto , Hidenori Wada
IPC分类号： G11B7/00 , G11B7/125 , G11B7/135 , G11B11/00
CPC分类号： G11B7/13925 , G11B7/1275 , G11B7/1362 , G11B7/1367 , G11B7/1369 , G11B2007/0006
摘要： Laser beams respectively emitted from a SHG blue laser unit and a red semiconductor laser unit that have photo detectors respectively are turned into parallel lights by a collimator lens and then coupled by a dielectric multi-layer film mirror so as to be propagated on the same optical axis. The dielectric multi-layer film mirror is configured so as to transmit light with a wavelength of 500 nm or shorter and reflect light with a wavelength of 500 nm or longer for both P wave and S wave. The lights that are transmitted and reflected by the dielectric multi-layer film mirror pass through a polarizing hologram and a phase variable wave plate and are focused on an optical disk by an objective lens. In this manner, a simple configuration can realize a compatibility with many types of optical disks and a stable signal detection even when using a polarizing optical detection system.

58. 发明授权

US06802655B2 Laser source 失效
标题翻译：激光源
公开(公告)号：US06802655B2
公开(公告)日：2004-10-12
申请号：US10196054
申请日：2002-07-16
申请人： Tosifumi Yokoyama , Yasuo Kitaoka , Kazuhisa Yamamoto
发明人： Tosifumi Yokoyama , Yasuo Kitaoka , Kazuhisa Yamamoto
IPC分类号： G02B636
CPC分类号： G02B6/4224 , G02B6/42 , G02B6/4234 , H01S5/02252 , H01S5/02268 , H01S5/02272 , H01S5/02284 , H01S5/0425 , H01S5/06256
摘要： An object of the present invention is to provide a laser source including a submount, an electrode portion formed on the submount, and a semiconductor laser fixed to the electrode portion by means of an adhesive portion, capable of improving the position accuracy of a laser beam emission portion of the semiconductor laser in the height direction. The electrode portion including an electrode for an active region, an electrode for a phase adjustment region, and an electrode for a DBR region is formed on the submount. A plurality of stopper portions also are formed on the submount. The semiconductor laser is fixed to the electrode portion (the electrode for an active region, electrode for a phase adjustment region, and electrode for a DBR region) by means of solder as an adhesive while being in contact with the stopper portions.
摘要翻译：本发明的目的是提供一种激光源，其包括基座，形成在基座上的电极部分和通过粘合部分固定到电极部分的半导体激光器，能够提高激光束的位置精度半导体激光器的高度方向的发射部分。在底座上形成有包括有源区用电极，相位调整区用电极和DBR区电极的电极部。在底座上还形成有多个止动部。半导体激光器通过焊料作为粘合剂固定到电极部分（用于有源区域的电极，用于相位调整区域的电极和用于DBR区域的电极），同时与止动部分接触。

59. 发明授权

US06614966B2 Optical waveguide device integrated module and method of manufacturing the same 有权
公开(公告)号：US06614966B2
公开(公告)日：2003-09-02
申请号：US09801223
申请日：2001-03-07
申请人： Yasuo Kitaoka , Toshifumi Yokoyama , Kazuhisa Yamamoto
发明人： Yasuo Kitaoka , Toshifumi Yokoyama , Kazuhisa Yamamoto
IPC分类号： G02B626
CPC分类号： G02B6/42 , G02B6/4219 , G02B6/4231 , G02F1/37 , H01L24/29 , H01L24/32 , H01L2224/83192 , H01S5/0092 , H01S5/02252 , H01S5/02272 , H01S5/0612 , H01S5/125
摘要： A semiconductor laser and an optical waveguide device with an optical waveguide formed at a surface of its substrate are provided on a submount. The semiconductor laser and the optical waveguide device are mounted with an active layer and a surface at which the optical waveguide is formed facing the submount, respectively. The submount is combined with the semiconductor laser or the optical waveguide device to form one body using an adhesive with a spacer, which maintains a substantially uniform distance therebetween, being interposed therebetween, so that position adjustment in the height direction can be made automatically and mounting can be carried out with high-precision optical coupling. Thus, an optical waveguide device integrated module and a method of manufacturing the same are provided, in which a semiconductor laser and a planar optical waveguide device are mounted with their positions in the height direction controlled with high precision.

60. 发明申请

US20090002265A1 Image Display Device and Image Display System 有权
标题翻译：图像显示设备和图像显示系统
公开(公告)号：US20090002265A1
公开(公告)日：2009-01-01
申请号：US11658318
申请日：2005-07-27
申请人： Yasuo Kitaoka , Kazuhisa Yamamoto , Hiromu Kitaura , Ken ichi Kasazumi
发明人： Yasuo Kitaoka , Kazuhisa Yamamoto , Hiromu Kitaura , Ken ichi Kasazumi
IPC分类号： G09G5/00 , G09G3/20
CPC分类号： H04B10/116 , G09G3/003 , G09G3/02 , G09G3/32 , G09G3/3406 , G09G2310/0237 , G09G2320/028 , G09G2320/0633 , G09G2320/0646 , G09G2354/00 , G09G2360/14 , H04B10/1141 , H04N13/305 , H04N13/376
摘要： An image display device and an image display system which can establish visible light communication without interfering with an image displayed at a predetermined frame rate are provided. A controller 12 controls a spatial light modulator in accordance with an image signal to display the image, and also modulates an intensity of a visible light output from a backlight 13 with a frequency higher than the frame rate of the image signal to have the visible light output from the backlight 13 carry additional information. A light receiver 15 receives the visible light and demodulates to extract the additional information. An additional information generator 16 outputs the additional information.
摘要翻译：提供了能够建立可见光通信而不干扰以预定帧率显示的图像的图像显示装置和图像显示系统。控制器12根据图像信号控制空间光调制器以显示图像，并且还以高于图像信号的帧速率的频率调制从背光源13输出的可见光的强度，以具有可见光来自背光13的输出携带附加信息。光接收器15接收可见光并进行解调以提取附加信息。附加信息发生器16输出附加信息。

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