公开(公告)号：US20050213616A1

公开(公告)日：2005-09-29

申请号：US11087770

申请日：2005-03-24

申请人： Nobuaki Kaji ,  Masaki Tsuchida ,  Ko Sato ,  Hideaki Okano ,  Ken Ito

发明人： Nobuaki Kaji ,  Masaki Tsuchida ,  Ko Sato ,  Hideaki Okano ,  Ken Ito

IPC分类号： G02B6/00 ,  H01S3/042 ,  H01S3/06 ,  H01S3/067 ,  H01S3/091 ,  H01S3/0933 ,  H01S3/094 ,  H01S3/10 ,  H01S3/16 ,  H01S3/17 ,  H01S3/23 ,  H01S3/30

CPC分类号： H01S3/067 ,  H01S3/094003 ,  H01S3/094042 ,  H01S3/094092 ,  H01S3/1613 ,  H01S3/1616 ,  H01S3/1618

摘要： A fiber laser device contains a first optical fiber of a double-clad type in which optical resonance of an infrared laser light takes place inside a core with Pr3+and Yb3+added thereto to generate a light of a wavelength of about 630 nm, a second optical fiber of a double-clad type in which optical resonance of an infrared laser light takes place inside a core with Pr3+and Yb3+added thereto to generate a light of a wavelength of about 690 nm, and a third optical fiber in which optical resonance of the lights from the first and second optical fibers takes place inside a core with Tm3+added thereto to generate a light of a wavelength of about 450 nm, and the core diameter of the third optical fiber is made substantially equal to the spot diameters of the lights from the first and second optical fibers.

摘要翻译： 光纤激光装置包含双层型的第一光纤，其中红外激光的光学谐振发生在具有Pr 3+和Y 3+ + >，以产生波长为约630nm的光，双重包层型的第二光纤，其中红外激光的光学谐振发生在具有Pr 3+ 和Yb 3+ +以产生波长为约690nm的光;以及第三光纤，其中来自第一和第二光纤的光的光学共振在核心内发生， 加入其中以产生波长为约450nm的光，并且使第三光纤的纤芯直径基本上等于来自第一和第二光学器件的光的光点直径 纤维。

公开(公告)号：US06829256B2

公开(公告)日：2004-12-07

申请号：US10261605

申请日：2002-10-02

申请人： Tooru Sugiyama ,  Naoki Akamatsu ,  Kiyoyuki Kawai ,  Hideaki Okano

发明人： Tooru Sugiyama ,  Naoki Akamatsu ,  Kiyoyuki Kawai ,  Hideaki Okano

IPC分类号： H01S330

CPC分类号： H01S3/067 ,  H01S3/06704 ,  H01S3/0809 ,  H01S3/094096

摘要： Light from a first excitation light source is incident on one facet of a first optical fiber. A core is doped with a first rare earth substance. A resonant section induces light resonance in the core to generate resonant light, thereby providing selected light at the other facet of the first optical fiber. An optical multi/demultiplexer reflects the light of the selected wavelength in a direction different from that of the first optical fiber. A second excitation light source supplies light to the resonant section of the first optical fiber via the optical multi/demultiplexer and the other facet of the first optical fiber. A second optical fiber guides the light of the selected wavelength from the optical multi/demultiplexer to an exterior.

摘要翻译： 来自第一激发光源的光入射在第一光纤的一个面上。 核心掺杂有第一稀土物质。 谐振部分在芯部中引起光共振以产生谐振光，从而在第一光纤的另一面提供所选择的光。 光学多路复用器/多路分解器以与第一光纤不同的方向反射所选波长的光。 第二激发光源经由光多路复用器和第一光纤的另一面向第一光纤的谐振部分提供光。 第二光纤将所选波长的光从光学多路复用器/解复用器引导到外部。

公开(公告)号：US06650677B1

公开(公告)日：2003-11-18

申请号：US09547109

申请日：2000-04-11

申请人： Ken Itoh ,  Hideaki Okano ,  Kiyoyuki Kawai ,  Ritsuo Yoshida

发明人： Ken Itoh ,  Hideaki Okano ,  Kiyoyuki Kawai ,  Ritsuo Yoshida

IPC分类号： H01S3091

CPC分类号： H01S5/146 ,  H01S3/067 ,  H01S3/06754 ,  H01S3/07 ,  H01S3/082 ,  H01S3/094038 ,  H01S3/094042 ,  H01S3/094092 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/1613 ,  H01S3/1616 ,  H01S3/1618

摘要： An up-conversion laser unit in which a semiconductor laser of high output power can be used as a pump light source and the wavelength of up-converted laser light is suitable for display. The light of infrared wavelength is generated by the pump light source, the generated light being inputted into a Pr3+ up-conversion laser to up-convert there into red light by Pr3+ ion. The up-converted red light is inputted into, as a pump light source, a Tm3+ up-conversion laser, there being up-converted into blue light by the Tm3+ ion. Thereby, efficient up-conversion into blue light is made possible.

摘要翻译： 可以使用高输出功率的半导体激光器作为泵浦光源并且上转换的激光的波长适于显示的上转换激光器单元。 红外波长的光由泵浦光源产生，所生成的光被输入到Pr <3+>上变换激光器中，以通过Pr 3+离子将其上变换为红光。 上转换的红光被输入到作为泵浦光源的Tm 3+上转换激光器中，通过Tm 3+离子被上变换为蓝光。 由此，能够有效地向蓝色光转换成蓝色光。

公开(公告)号：US06320885B1

公开(公告)日：2001-11-20

申请号：US09389378

申请日：1999-09-03

申请人： Kiyoyuki Kawai ,  Ritsuo Yoshida ,  Ken Itou ,  Hideaki Okano

发明人： Kiyoyuki Kawai ,  Ritsuo Yoshida ,  Ken Itou ,  Hideaki Okano

IPC分类号： H01S330

CPC分类号： H01S3/09415 ,  H01S3/07 ,  H01S3/094011 ,  H01S3/094015 ,  H01S3/094042 ,  H01S3/094092 ,  H01S3/094096 ,  H01S3/1608 ,  H01S3/1616 ,  H01S5/146

摘要： In an up-conversion laser using Tm, blue light having a wavelength of 450 nm and blue light having a wavelength of 480 nm are outputted simultaneously. A high output is enabled with a high efficiency, and a green up-conversion laser is also realized by a similar means. A hybrid fiber laser apparatus includes a light source which outputs light near a wavelength A, and comprises a means for reflecting light near the wavelength A, which is provided at another end of the optical fiber, thereby to form an optical resonator for the wavelength A. In this hybrid fiber laser apparatus, an up-conversion fiber is provided in the optical resonator for the wavelength A, and optical resonator structures for a wavelength B constructed by reflection means and for a wavelength B are respectively provided at two positions at both ends of the up-conversion fiber. Of the two reflection means, the reflection means in the laser diode chip side is arranged so as to achieve high reflection, and the other reflection means in the other end side is arranged so as to achieve partial reflection, thereby to obtain output light having a wavelength B from the partial reflection side.

摘要翻译： 在使用Tm的上转换激光中，同时输出波长为450nm的蓝色光和波长为480nm的蓝色光。 高效率地实现了高输出，并且通过类似的方式也实现了绿色上转换激光器。 混合光纤激光装置包括输出波长A附近的光的光源，并且包括用于反射靠近波长A的光的装置，该装置设置在光纤的另一端，从而形成用于波长A的光谐振器 在该混合光纤激光装置中，在波长A的光谐振器中设置有上变频光纤，由反射装置和波长B构成的波长B的光谐振器结构分别设置在两端的两个位置 的上转换光纤。 在两个反射装置中，激光二极管芯片侧的反射装置被布置成实现高反射，并且另一端侧的另一反射装置被布置成实现部分反射，从而获得具有 来自部分反射侧的波长B.

公开(公告)号：US20130076971A1

公开(公告)日：2013-03-28

申请号：US13571606

申请日：2012-08-10

申请人： Masashi Nishimoto ,  Hideaki Okano ,  Takahiro Tomaru

发明人： Masashi Nishimoto ,  Hideaki Okano ,  Takahiro Tomaru

IPC分类号： G02B3/00 ,  G02B9/60 ,  H04N5/225 ,  G02B9/34

CPC分类号： G02B13/004 ,  G02B3/00 ,  G02B7/02 ,  G02B7/021 ,  H04N5/2254

摘要： An optical element includes an effective diameter area that is centered on an optical axis and transmits an effective light beam, and a flange portion having, on a side surface around the effective diameter area, a slope that is not perpendicular to a direction of the optical axis.

摘要翻译： 光学元件包括以光轴为中心并透射有效光束的有效直径区域和在有效直径区域周围的侧表面上具有不垂直于光学方向的斜率的凸缘部分 轴。

公开(公告)号：US20100054103A1

公开(公告)日：2010-03-04

申请号：US12409865

申请日：2009-03-24

申请人： Shinichi Tatsuta ,  Masataka Shiratsuchi ,  Hideaki Okano ,  Yuji Kubota

发明人： Shinichi Tatsuta ,  Masataka Shiratsuchi ,  Hideaki Okano ,  Yuji Kubota

IPC分类号： G11B7/00 ,  G11B7/135

CPC分类号： G11B7/00772 ,  G03H1/26 ,  G03H1/265 ,  G11B7/08564 ,  G11B7/128 ,  G11B7/1362 ,  G11B7/1365 ,  G11B7/1369

摘要： An optical information recording/reproducing apparatus includes a spatial light modulator that converts an irradiation beam emitted from a light source to a single information beam that carries information; an optical system that causes the single information beam to be collected on an optical-information recording medium including an information recording layer capable of recording the information as hologram by using interference fringes produced due to interference between the single information beam and a plurality of reference beams, and causes each of the reference beams to be irradiated to the optical-information recording medium from mutually different directions so as to intersect with the single information beam in the information recording layer; and a controller that controls to cause the light source to emit the irradiation beam and performs angular multiplexing recording of the information in the information recording layer while controlling to drive either one of the optical-information recording medium and the optical system.

摘要翻译： 一种光信息记录/再现装置，包括将从光源发射的照射光束转换为携带信息的单个信息光束的空间光调制器; 一种光学系统，其使得单个信息光束被收集在光学信息记录介质上，该光学信息记录介质包括能够通过使用由单个信息光束与多个参考光束之间的干涉而产生的干涉条纹将信息记录为全息图的信息记录层 并且使得每个参考光束从相互不同的方向照射到光学信息记录介质，以便与信息记录层中的单个信息光束相交; 以及控制器，其控制使光源发射照射光束，并且在控制驱动光信息记录介质和光学系统中的任一个的同时进行信息记录层中的信息的角度复用记录。

公开(公告)号：US20100046090A1

公开(公告)日：2010-02-25

申请号：US12458777

申请日：2009-07-22

申请人： Hideaki Okano

发明人： Hideaki Okano

IPC分类号： G02B13/18 ,  H04N5/225 ,  G02B9/34

CPC分类号： G02B13/004 ,  G02B9/34 ,  G03B29/00

摘要： An image pickup lens includes, in order from an object side to an image side, an aperture stop, a first lens element having a positive refractive power, a second lens element having a negative refractive power and a biconcave shape, a third lens element having a positive refractive power and a meniscus shape whose concave surface faces the object side, and a fourth lens element having a negative refractive power. In the image pickup lens, the following conditional expressions are satisfied, 0.20 25 where f denotes the focal length of the entire lens system, f2 denotes the focal length of the second lens element, νd1 denotes the Abbe number of the first lens element, and νd2 denotes the Abbe number of the second lens element.

摘要翻译： 图像拾取透镜从物体侧到像侧依次包括孔径光阑，具有正折光力的第一透镜元件，具有负折光力的第二透镜元件和双凹面形状，第三透镜​​元件具有 凹面朝向物体侧的正屈光力和弯液面形状以及具有负屈光力的第四透镜元件。 在图像拾取透镜中，满足以下条件表达式：0.20 25其中f表示整个透镜系统的焦距，f2表示 第二透镜元件，d1表示第一透镜元件的阿贝数，＆ngr; d2表示第二透镜元件的阿贝数。

公开(公告)号：US20080186832A1

公开(公告)日：2008-08-07

申请号：US12023795

申请日：2008-01-31

申请人： Katsuo Iwata ,  Kazuhiro Nagata ,  Hideaki Okano

发明人： Katsuo Iwata ,  Kazuhiro Nagata ,  Hideaki Okano

IPC分类号： G11B7/00

CPC分类号： G11B7/13927 ,  G11B7/0932 ,  G11B7/1369 ,  G11B2007/0006

摘要： According to an embodiment of the optical head unit includes two or more light sources, an objective lens which condenses the light beam having the predetermined wavelength output from each of the light sources to a recording layer of a recording medium, and captures a light beam reflected on the recording layer, a polarization control element arranged between the light sources and the objective lens, to optimize directions of polarization of the light beam having the predetermined wavelength output from the light source and the light beam reflected on the recording layer, in accordance with the wavelength thereof, on the basis of a voltage to be applied, a photodetector which receives the reflected light beam captured by the objective lens and outputs a predetermined signal, and a polarization controller which varies the direction of polarization set by the polarization control element, in accordance with the output of the photodetector, the fluctuations of the signals recorded and/or reproduced in each wavelength of the light beams with each of three kinds of optical discs different in recording density and format are stabilized.

摘要翻译： 根据光头单元的实施例包括两个或更多个光源，将从每个光源输出的具有预定波长的光束聚光到记录介质的记录层的物镜，并且捕获反射的光束 在记录层上，设置在光源和物镜之间的偏振控制元件，以优化具有从光源输出的预定波长的光束和记录层上反射的光束的光束的偏振方向，根据 基于要施加的电压的波长，接收由物镜捕获的反射光束并输出预定信号的光电检测器，以及改变由偏振控制元件设定的偏振方向的偏振控制器， 根据光电检测器的输出，记录的信号的波动和/或 在记录密度和格式不同的三种光盘中的每一种光束的每个波长中再生。

公开(公告)号：US20070064573A1

公开(公告)日：2007-03-22

申请号：US11519996

申请日：2006-09-11

申请人： Kazuhiro Nagata ,  Katsuo Iwata ,  Hideaki Okano

发明人： Kazuhiro Nagata ,  Katsuo Iwata ,  Hideaki Okano

IPC分类号： G11B7/135

CPC分类号： G11B7/1353 ,  G11B7/0903 ,  G11B7/0906 ,  G11B7/0916 ,  G11B7/0956

摘要： According to one embodiment, a diffraction pattern of a diffraction element, or a hologram polarization element, to guide a reflected laser beam divided into a predetermined number to a photodetector is combined preferably as one unit, in order to provide an optical head unit and an optical disc apparatus, which provides a stable reproducing signal, irrespectively of the standards of recording media, when reproducing information from a recording medium of optional standard. By using this diffraction pattern, it is possible to obtain outputs usable to detect first, second and third signals used to detect a tracking error when reproducing information recorded on an optical disc from a reflected laser beam from an optical disc, a fourth signal used to detect a focus error, and a fifth signal used to detect a disc tilt error and a spherical aberration compensating component.

摘要翻译： 根据一个实施例，衍射元件或全息偏振元件的衍射图案，用于将被分成预定数量的反射激光束引导到光电检测器，优选组合为一个单元，以便提供光学头单元和 光盘装置，当从可选标准的记录介质再现信息时，提供与记录介质的标准无关的稳定再现信号。 通过使用该衍射图案，可以获得可用于检测从用于从光盘反射的激光束再现记录在光盘上的信息时检测跟踪误差的第一，第二和第三信号的输出，第四信号用于 检测聚焦误差，以及用于检测光盘倾斜误差的第五信号和球面像差补偿分量。

公开(公告)号：US20050069010A1

公开(公告)日：2005-03-31

申请号：US10947404

申请日：2004-09-23

申请人： Hideaki Okano ,  Masaki Tsuchida

发明人： Hideaki Okano ,  Masaki Tsuchida

IPC分类号： H01S3/06 ,  H01S3/067 ,  H01S3/131 ,  H01S3/16 ,  H01S3/091

CPC分类号： H01S3/131 ,  H01S3/06716 ,  H01S3/094096 ,  H01S3/16 ,  H01S3/1616

摘要： A laser apparatus according to this invention includes an optical resonator, which has a mirror capable of enclosing light with a required output wavelength and light with a first non-required output wavelength able to increase the efficiency of generating the light with the required output wavelength, in an optical fiber, at both ends of an optical fiber added with ions capable of generating light with a required output wavelength, and damping or discharging light with a second non-required output wavelength to suppress generation of light with the required output wavelength, to outside.

摘要翻译： 根据本发明的激光装置包括光学谐振器，其具有能够包围具有所需输出波长的光的反射镜和具有能够增加产生具有所需输出波长的光的效率的第一非需要输出波长的光， 在光纤中，在添加有能够产生具有所需输出波长的光的离子的光纤的两端，以及阻尼或放电具有第二非需要输出波长的光以抑制具有所需输出波长的光的产生，以 外。