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1. 发明授权

US5359452A Lithium tantalate monocrystal, monocrystal substrate, and photo element 失效
标题翻译：钽酸锂单晶，单晶衬底和光电元件
公开(公告)号：US5359452A
公开(公告)日：1994-10-25
申请号：US46955
申请日：1993-04-16
申请人： Fumio Nitanda , Yasunori Furukawa , Masayoshi Sato , Kohei Ito , Satoshi Makio
发明人： Fumio Nitanda , Yasunori Furukawa , Masayoshi Sato , Kohei Ito , Satoshi Makio
IPC分类号： C30B15/04 , C30B11/00 , C30B13/00 , C30B15/00 , C30B29/30 , G02F1/00 , G02F1/355 , G02F1/37
CPC分类号： G02F1/3558 , C30B11/00 , C30B13/00 , C30B15/00 , C30B29/30 , G02F1/0018
摘要： 0.1% or more of Mg by weight is added to lithium tantalate monocrystal materials wherein the amount of Fe is restricted to 10 ppm by weight or less to improve light transmittance in the short wavelength range of blue light and to shift the fundamental absorption edge to the shorter wavelength.
摘要翻译：将0.1重量％以上的Mg添加到钽酸锂单晶材料中，其中Fe的量限制在10重量ppm以下，以提高蓝光的短波长范围内的透光率，并将基底吸收边缘移位到波长较短。

2. 发明授权

US4999726A Magnetic core for flying-type composite magnetic head 失效
标题翻译：用于飞行型复合磁头的磁芯
公开(公告)号：US4999726A
公开(公告)日：1991-03-12
申请号：US329324
申请日：1989-03-27
申请人： Ryo Goto , Tadafumi Tomitani , Fumio Nitanda , Manabu Toyoda , Makoto Ushijima
发明人： Ryo Goto , Tadafumi Tomitani , Fumio Nitanda , Manabu Toyoda , Makoto Ushijima
IPC分类号： G11B5/105 , G11B5/127 , G11B5/187 , G11B5/23
CPC分类号： G11B5/187 , G11B5/105 , G11B5/1272
摘要： A magnetic core for a flying-type composite magnetic head, including a pair of core pieces, a glass portion for bonding the core pieces, and a thin magnetic metal layer of Fe-Al-Si alloys formed on at least one of opposing surfaces of the core pieces. The thin magnetic metal layer extends by 10 .mu.m or more from an apex of a magnetic gap defined by the core pieces and has an inner end existing by 15 .mu.m or more inside an inner end of the bonding glass portion.
摘要翻译：一种用于飞行型复合磁头的磁芯，包括一对芯片，用于粘结芯片的玻璃部分和形成在至少一个相对表面上的Fe-Al-Si合金的薄磁性金属层核心件。薄磁性金属层从由芯片限定的磁隙的顶点延伸10μm以上，在接合玻璃部的内端内侧具有15μm以上的内端。

3. 发明授权

US06870984B1 Optical switching device comprising plural mechanical optical switches 失效
标题翻译：光开关器件包括多个机械光开关
公开(公告)号：US06870984B1
公开(公告)日：2005-03-22
申请号：US10151938
申请日：2002-05-22
申请人： Yoshiaki Uchida , Fumio Nitanda , Tomoki Soutome , Shinji Furuichi
发明人： Yoshiaki Uchida , Fumio Nitanda , Tomoki Soutome , Shinji Furuichi
IPC分类号： G02B26/08 , G02B6/35 , G02B6/26
CPC分类号： G02B6/3582 , G02B6/3502 , G02B6/3544 , G02B6/3572
摘要： An optical switching device comprising a plurality of mechanical optical switching structures having one to several movable optical fibers and one to several fixed optical fibers installed in a housing in which a refractive index matching oil is filled up and immerses the structures. Each of the structures has an electromagnetic actuator to reciprocate open ends of the movable optical fibers relatively to open ends of the fixed optical fibers and to connect/disconnect optical paths. Ends opposite to the open ends of the movable optical fibers and the fixed optical fibers are drawn out through ports located on the housing so that a certain number of optical fibers among the optical fibers drawn out serve as input optical fibers, while a certain number of optical fibers among the other optical fibers drawn out serve as output optical fibers, to constitute the optical switching device of m×n type, in which m is the number of input paths and n is the number of output paths, providing a small-sized optical switching device having variable numbers of input/output paths.
摘要翻译：一种光学开关装置，包括多个机械光学开关结构，其具有一个至几个可移动光纤和一个至几个固定的光纤，该光纤安装在壳体中，其中折射率匹配油被填充并浸没在该结构中。每个结构具有电磁致动器，以相对于固定光纤的开口端往复移动可动光纤的开口端并连接/断开光路。可移动光纤和固定光纤的开口端的相反端部通过位于壳体上的端口被抽出，使得被拉出的光纤中的一定数量的光纤用作输入光纤，而一定数量的引出的其他光纤中的光纤作为输出光纤，构成mxn型光开关器件，其中m为输入通路数，n为输出路径数，提供小尺寸光开关设备具有可变数量的输入/输出路径。

4. 发明授权

US5412502A Second harmonic generating element and the production method thereof 失效
标题翻译：二次谐波发生元件及其制造方法
公开(公告)号：US5412502A
公开(公告)日：1995-05-02
申请号：US8310
申请日：1993-01-25
申请人： Satoshi Makio , Fumio Nitanda , Yasuhiro Furukawa , Kohei Ito , Masazumi Sato , Kazutami Kawamoto , Kenchi Ito
发明人： Satoshi Makio , Fumio Nitanda , Yasuhiro Furukawa , Kohei Ito , Masazumi Sato , Kazutami Kawamoto , Kenchi Ito
IPC分类号： G02F1/355 , G02F1/377 , G02F1/37
CPC分类号： G02F1/3775 , G02F1/3558
摘要： Using an LiTaO.sub.3 or LiNbO.sub.3 substrate, a proton exchange layer in a grid pattern, namely sprout areas of polarization inversion, is firstly, formed on the surface of said substrate and, after formation of the pattern, heat treatment is executed at a temperature of 200.degree. C. or more and for a holding time of 10 minutes or less. By maintaining the temperature gradient up to said heat treatment point at 50.degree. C./min. or steeper and by maintaining the temperature decrease rate from said heat treatment point at 50.degree. C./min. or faster, polarization inverted areas are formed downwards from the proton exchanged areas, while in addition to making the top ends of said polarization inverted areas into an acute angle, the depth/weight ratio of the polarization inverted grids being formed is made to exceed 1, thus enabling the production of a high-efficiency SHG element.
摘要翻译：使用LiTaO 3或LiNbO 3衬底，首先在所述衬底的表面上形成网格图案中的质子交换层，即极化反转的发芽区域，在形成图案之后，在200℃的温度下进行热处理 ℃以上，保持时间为10分钟以下。通过将温度梯度保持在50℃/分钟以上的热处理点。或更陡，并且通过将所述热处理点的温度降低速率保持在50℃/分钟。或更快的偏振反转区域从质子交换区域向下形成，而除了使所述偏振反转区域的顶端成为锐角之外，所形成的偏振反转栅格的深度/重量比超过1 ，因此能够生产高效率的SHG元件。

5. 发明授权

US5086553A Method of producing a fly-type composite magnetic head with appropriate bonding glasses 失效
标题翻译：生产具有适当粘结玻璃的飞轮型复合磁头的方法
公开(公告)号：US5086553A
公开(公告)日：1992-02-11
申请号：US606473
申请日：1990-10-31
申请人： Ryo Goto , Tadafumi Tomitani , Fumio Nitanda , Masanobu Yamazaki , Manabu Toyoda , Makoto Ushijima
发明人： Ryo Goto , Tadafumi Tomitani , Fumio Nitanda , Masanobu Yamazaki , Manabu Toyoda , Makoto Ushijima
IPC分类号： G11B5/105 , G11B5/127 , G11B5/23
CPC分类号： G11B5/105 , G11B5/1272 , G11B5/232 , Y10T29/49041 , Y10T29/49059
摘要： A flying-type composite magnetic head includes (a) a magnetic core constituted by a pair of core pieces bonded together by a first glass portion, at least one of opposing surfaces of the core pieces being formed with a thin magnetic metal layer; (b) a non-magnetic slider having a slit for receiving the magnetic core; and (c) a second glass portion for fixing the magnetic core in the slit; the first glass portion having a softening point lower than a first bonding temperature by 70.degree. C. or more and a yielding temperature higher than a second bonding temperature, and the second glass portion having a softening point lower than a second bonding temperature by 70.degree. C. or more. The first bonding temperature T.sub.1 (.degree.C.) for forming the first glass portion satisfies the following relation:T.sub.1 .ltoreq.aW+b,wherein W is a thickness (.mu.m) of the thin magnetic metal layer, a is between -25 and -15 and b is between 720 and 770, and a second bonding temperature T.sub.2 for forming the second glass portion is 530.degree. C. or lower.

6. 发明申请

US20050063640A1 OPTICAL SWITCHING DEVICE COMPRISING PLURAL MECHANICAL OPTICAL SWITCHES 失效
标题翻译：包含多个机械光学开关的光学开关装置
公开(公告)号：US20050063640A1
公开(公告)日：2005-03-24
申请号：US10151938
申请日：2002-05-22
申请人： Yoshiaki Uchida , Fumio Nitanda , Tomoki Soutome , Shinji Furuichi
发明人： Yoshiaki Uchida , Fumio Nitanda , Tomoki Soutome , Shinji Furuichi
IPC分类号： G02B26/08 , G02B6/35 , G02B6/26
CPC分类号： G02B6/3582 , G02B6/3502 , G02B6/3544 , G02B6/3572
摘要： An optical switching device comprising a plurality of mechanical optical switching structures having one to several movable optical fibers and one to several fixed optical fibers installed in a housing in which a refractive index matching oil is filled up and immerses the structures. Each of the structures has an electromagnetic actuator to reciprocate open ends of the movable optical fibers relatively to open ends of the fixed optical fibers and to connect/disconnect optical paths. Ends opposite to the open ends of the movable optical fibers and the fixed optical fibers are drawn out through ports located on the housing so that a certain number of optical fibers among the optical fibers drawn out serve as input optical fibers, while a certain number of optical fibers among the other optical fibers drawn out serve as output optical fibers, to constitute the optical switching device of m×n type, in which m is the number of input paths and n is the number of output paths, providing a small-sized optical switching device having variable numbers of input/output paths.
摘要翻译：一种光学开关装置，包括多个机械光学开关结构，其具有一个至几个可移动光纤和一个至几个固定的光纤，该光纤安装在壳体中，其中折射率匹配油被填充并浸没在该结构中。每个结构具有电磁致动器，以相对于固定光纤的开口端往复移动可动光纤的开口端并连接/断开光路。可移动光纤和固定光纤的开口端的相反端部通过位于壳体上的端口被抽出，使得被拉出的光纤中的一定数量的光纤用作输入光纤，而一定数量的引出的其他光纤中的光纤作为输出光纤，构成mxn型光开关器件，其中m为输入通路数，n为输出路径数，提供小尺寸光开关设备具有可变数量的输入/输出路径。

7. 发明授权

US06549689B2 Optical switch 失效
公开(公告)号：US06549689B2
公开(公告)日：2003-04-15
申请号：US09770490
申请日：2001-01-29
申请人： Shinji Furuichi , Fumio Nitanda
发明人： Shinji Furuichi , Fumio Nitanda
IPC分类号： G02B626
CPC分类号： G02B6/3582 , G02B6/3502 , G02B6/3548 , G02B6/3572
摘要： An optical switch comprising a fixed optical-fiber holder for holding either of input/output optical fibers, a movable optical-fiber holder for holding the other of the input/output optical fibers, which faces the fixed optical-fiber holder and is movable with respect to the fixed optical-fiber holder, and a driver for moving the movable optical-fiber holder with respect to the fixed optical-fiber holder immersed in the refractive index matching material, such as silicone oil. Inside the housing provided are a heater for heating the refractive index matching material, a means for sensing temperature inside the housing, and a controller for turning on the power to the heater when the measured value of the temperature sensing means is lower than a first predetermined value, and turning off the power to the heater when the measured value of the temperature sensing means is higher than a second predetermined value. This optical switch is capable of maintaining proper operation even when its service temperature becomes low, and preventing overheat.

8. 发明授权

US5854870A Short-wavelength laser light source 失效
标题翻译：短波长激光光源
公开(公告)号：US5854870A
公开(公告)日：1998-12-29
申请号：US027724
申请日：1993-03-04
申请人： Sten Helmfrid , Kenchi Ito , Kimio Tatsuno , Kazumi Kawamoto , Tetsuo Andou , Hiroshi Momiji , Osamu Komoda , Hisao Kurosawa , Masayoshi Sato , Fumio Nitanda , Kohei Ito
发明人： Sten Helmfrid , Kenchi Ito , Kimio Tatsuno , Kazumi Kawamoto , Tetsuo Andou , Hiroshi Momiji , Osamu Komoda , Hisao Kurosawa , Masayoshi Sato , Fumio Nitanda , Kohei Ito
IPC分类号： G02F1/35 , G02F1/37 , G02F1/377 , G11B7/125 , H01S5/022 , G02B6/43
CPC分类号： G02F1/3775 , G02F1/377 , G11B7/127 , G02F1/37 , G02F2001/3546 , H01S5/0092 , H01S5/02248 , H01S5/02288 , H01S5/141
摘要： There is disclosed a harmonic modulation device of waveguide type including a semiconductor laser, a waveguide for generating a nonlinear optical harmonic of the semiconductor laser by keeping phase matching, means for leading an optical beam of the semiconductor laser to the waveguide, electrodes disposed on the waveguide, and means for modulating a refractive index of the waveguide electro-optically to modulate a phase matching condition and thereby modulate an intensity of the harmonic.
摘要翻译：公开了一种包括半导体激光器的波导型谐波调制装置，通过保持相位匹配产生半导体激光器的非线性光谐波的波导，将半导体激光器的光束引导到波导的装置，波导，以及用于调制波导的光折射率以调制相位匹配条件并由此调制谐波强度的装置。

9. 发明授权

US5771133A Floating magnetic head 失效
标题翻译：浮动磁头
公开(公告)号：US5771133A
公开(公告)日：1998-06-23
申请号：US652021
申请日：1996-05-21
申请人： Ryo Goto , Masahiro Ao , Fumio Nitanda
发明人： Ryo Goto , Masahiro Ao , Fumio Nitanda
IPC分类号： G11B5/60 , G11B21/21
CPC分类号： G11B5/6005
摘要： Two floating rails are provided on a slider of a floating magnetic head. Rear portions, in the advancing direction of a floating magnetic head with respect to a magnetic recording medium, of the respective floating rails are cut out. That is, the floating rails exist only in front of the cut-out portions. An auxiliary rail is formed in the rear of one of the floating rails. The auxiliary rail is narrower than the floating rail, wider than the track width of an electromagnetic conversion element, and approximately as high as the floating rail. The electromagnetic conversion element is provided at a rear portion of the auxiliary rail.
摘要翻译：两个浮动导轨设置在浮动磁头的滑块上。切出相应浮动导轨相对于磁记录介质的浮动磁头前进方向的后部。也就是说，浮动轨道仅存在于切口部分的前方。辅助轨道形成在浮动轨道之一的后部。辅助轨道比浮动轨道窄，比电磁转换元件的轨道宽度宽，大致与浮动轨道一样高。电磁转换元件设置在辅助轨道的后部。

10. 发明授权

US5016129A Flying-type composite magnetic head with appropriate bonding glasses and method of producing same 失效
标题翻译：具有适当粘结眼镜的飞行型复合磁头及其制造方法
公开(公告)号：US5016129A
公开(公告)日：1991-05-14
申请号：US330216
申请日：1989-03-29
申请人： Ryo Goto , Tadafumi Tomitani , Fumio Nitanda , Masanobu Yamazaki , Manabu Toyoda , Makoto Ushijima
发明人： Ryo Goto , Tadafumi Tomitani , Fumio Nitanda , Masanobu Yamazaki , Manabu Toyoda , Makoto Ushijima
IPC分类号： G11B5/105 , G11B5/127 , G11B5/23
CPC分类号： G11B5/105 , G11B5/1272 , G11B5/232 , Y10T29/49041 , Y10T29/49059
摘要： A flying-type composite magnetic head includes (a) a magnetic core constituted by a pair of core pieces bonded together by a first glass portion, at least one of opposing surfaces of the core pieces being formed with a thin magnetic metal layer; (b) a non-magnetic slider having a slit for receiving the magnetic core; and (c) a second glass portion for fixing the magnetic core in the slit; the first glass portion having a softening point lower than a first bonding temperature by 70.degree. C. or more and a yielding temperature higher than a second bonding temperature, and the second glass portion having a softening point lower than a second bonding temperature by 70.degree. C. or more. The first bonding temperature T.sub.1 .degree.C.) for forming the first glass portion satisfies the following relation:T.sub.1 .ltoreq.aW+b,wherein W is a thickness (.mu.m) of the thin magnetic metal layer, a is between -25 and -15 and b is between 720 and 770, and a second bonding temperature T.sub.2 for forming the second glass portion is 530.degree. C. or lower.
摘要翻译：飞行型复合磁头包括：（a）由通过第一玻璃部分接合在一起的一对芯片构成的磁芯，所述芯片的相对表面中的至少一个形成有薄的磁性金属层; （b）具有用于接收磁芯的狭缝的非磁性滑块; 和（c）用于将所述磁芯固定在所述狭缝中的第二玻璃部分; 第一玻璃部分的软化点低于第一接合温度70℃以上，屈服温度高于第二接合温度，第二玻璃部分的软化点低于第二接合温度70℃ C.或更多。用于形成第一玻璃部分的第一接合温度T1℃）满足以下关系：T1

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