公开(公告)号：US20070101926A1

公开(公告)日：2007-05-10

申请号：US11620024

申请日：2007-01-04

申请人： Izumi FUSEGAWA ,  Sadayuki Okuni ,  Nobuaki Mitamura ,  Tomohiko Ohta ,  Nobuo Katuoka

发明人： Izumi FUSEGAWA ,  Sadayuki Okuni ,  Nobuaki Mitamura ,  Tomohiko Ohta ,  Nobuo Katuoka

IPC分类号： C30B15/00 ,  C30B21/06 ,  C30B27/02 ,  C30B28/10 ,  C30B30/04

CPC分类号： C30B15/22 ,  C30B15/36 ,  C30B29/06 ,  Y10T117/1032

摘要： The present invention is a method of manufacturing a silicon single crystal by Czochralski method without performing Dash Necking method, comprising the steps of: providing a seed crystal having a tip end with a sharp-pointed shape or a truncation thereof in which an angle of the tip end is 28° or less; keeping the tip end of the seed crystal at just above a silicon melt to heat it before bringing the tip end of the seed crystal into contact with the silicon melt; bringing the tip end of the seed crystal into contact with the silicon melt and immersing the seed crystal into the silicon melt to a desired diameter; and shifting to pull the single crystal, wherein a temperature variation at a surface of the silicon melt is kept at ±5° C. or less at least for a period from a point of bringing the tip end of the seed crystal into contact with the silicon melt to a point of shifting to pull the single crystal. Thereby, in a method of growing a silicon single crystal by Czochralski method without using Dash Necking method, a success ratio of growing a single crystal free from dislocation can be increased, at the same time a heavy silicon single crystal having a large diameter in which a diameter of a constant diameter portion is over 200 mm can be grown even in the case of growing a silicon single crystal having a crystal orientation of .

摘要翻译： 本发明是一种通过Czochralski法制造单晶硅的方法，而不进行Dash Necking方法，包括以下步骤：提供具有尖锐形状或截头尖端的晶种，其中， 尖端为28°以下; 将晶种的尖端保持在硅熔体正上方，以使晶种的尖端与硅熔体接触; 使晶种的尖端与硅熔体接触并将晶种浸入硅熔体中至所需的直径; 并且移动以拉动单晶，其中，至少在使晶种的尖端与所述晶体接触的时间点至少保持在所述硅熔体的表面处的温度变化为±5℃以下 硅熔化到移动点以拉动单晶。 因此，在不使用Dash Necking法的情况下，通过Czochralski法生长硅单晶的方法中，可以提高生长不含位错的单晶的成功率，同时可以增加直径大的重硅单晶，其中， 即使在生长晶体取向为<110>的硅单晶的情况下，也可以生长恒定直径部分的直径超过200mm。

公开(公告)号：US07137741B2

公开(公告)日：2006-11-21

申请号：US10310900

申请日：2002-12-06

申请人： Shinji Fujita ,  Youichi Matsumoto ,  Yasuo Murakami ,  Nobuaki Mitamura ,  Shigeru Okita

发明人： Shinji Fujita ,  Youichi Matsumoto ,  Yasuo Murakami ,  Nobuaki Mitamura ,  Shigeru Okita

IPC分类号： F16C33/58 ,  F16C33/32 ,  F16C33/00

CPC分类号： F16C33/30 ,  F16C33/62

摘要： A rolling bearing intended for longer life by improving seizure resistance and wear resistance in the circumstance with slip contact or in the circumstance where lubricant tends to be exhausted, which is manufactured by applying carburization or carbonitridation to an Si-added material to disperse and precipitate carbides or carbonitrides containing Si or Si—X (X=one or more of Mn, Mo, and Cr) thereby improving the seizure resistance and the wear resistance by the self-lubrication effect thereof, the size of the carbides or carbonitrides being preferably 10 μm or less for preventing flaking, and the area ratio for the carbides or carbonitrides being preferably 1.0–30% for obtaining sufficient self-lubrication effect.

公开(公告)号：US20060072872A1

公开(公告)日：2006-04-06

申请号：US11042143

申请日：2005-01-26

申请人： Nobuaki Mitamura

发明人： Nobuaki Mitamura

IPC分类号： G02B6/26

CPC分类号： G02B6/3594 ,  G02B6/2931 ,  G02B6/3512 ,  G02B6/353 ,  G02B6/3544 ,  G02B6/356 ,  H04Q11/0005 ,  H04Q2011/0026 ,  H04Q2011/003 ,  H04Q2011/0039 ,  H04Q2011/0049

摘要： In a wavelength selecting optical switch, a shutter is situated near an incident position, which is a position at which the light falls onto the mirrors, and has a plurality of blocking members that prevent or allow light to be incident onto respective mirrors. Moreover, a control unit controls a blocking member corresponding to a mirror of which an angle is to be changed so that the blocking member prevents the light to be incident onto the corresponding mirror.

摘要翻译： 在波长选择光学开关中，快门位于入射位置附近，该入射位置是光落在反射镜上的位置，并且具有防止或允许光入射到各个反射镜上的多个阻挡构件。 此外，控制单元控制对应于要改变角度的反射镜的阻挡构件，使得阻挡构件防止光入射到相应的反射镜上。

公开(公告)号：US06931165B2

公开(公告)日：2005-08-16

申请号：US10974780

申请日：2004-10-28

申请人： Hiroshi Nagaeda ,  Nobuaki Mitamura ,  Kazuaki Akimoto

发明人： Hiroshi Nagaeda ,  Nobuaki Mitamura ,  Kazuaki Akimoto

IPC分类号： G02B6/32 ,  G02B5/30 ,  G02B6/26 ,  G02B6/34 ,  G02B27/28 ,  G02F1/01 ,  G02F1/03 ,  G02F1/061 ,  G02F1/13 ,  G02F1/31 ,  G02B6/00

CPC分类号： G02B6/29302 ,  G02B6/266 ,  G02B6/272 ,  G02B6/2766 ,  G02B27/286 ,  G02F1/0136 ,  G02F2201/17 ,  G02F2203/48

摘要： An optical device includes a small and low-cost variable polarization plane rotator that can control a rotation angle of the polarization plane easily. A variable polarization plane rotator is provided with a λ/4 phase plate having an optical axis in the same direction as, or at a 90 degree angle relative to, a polarization direction of an input light beam. A phase difference variable element has an optical axis at a ±45 degree angle relative to the optical axis of the λ/4 phase plate, to apply a variable phase difference between the polarization components parallel to and perpendicular to the optical axis thereof. A phase difference adjustment section adjusts the variable phase difference of the phase difference variable element, wherein the input light beam after being transmitted through the phase difference variable element to form elliptically polarized light or circularly polarized light, is transmitted through the λ/4 phase plate to form linearly polarized light. The polarization plane of the input light beam is rotated by an angle corresponding to the phase difference applied by the phase difference variable element.

摘要翻译： 光学装置包括可以容易地控制偏振面的旋转角度的小而低成本的可变偏振面旋转器。 可变偏振面旋转体设置有λ/ 4相位板，其具有与输入光束的偏振方向相同的方向或相对于输入光束的偏振方向成90度角的光轴。 相位差可变元件相对于λ/ 4相位板的光轴具有±45度角的光轴，以在平行于其并垂直于其光轴的偏振分量之间施加可变相位差。 相位差调整部分调节相位差可变元件的可变相位差，其中通过相位差可变元件传输以形成椭圆偏振光或圆偏振光的输入光束透射通过λ/ 4相位板 以形成线偏振光。 输入光束的偏振平面旋转与由相位差可变元件施加的相位差对应的角度。

公开(公告)号：US20050046837A1

公开(公告)日：2005-03-03

申请号：US10792747

申请日：2004-03-05

申请人： Hirotomo Izumi ,  Hiroshi Nagaeda ,  Nobuaki Mitamura

发明人： Hirotomo Izumi ,  Hiroshi Nagaeda ,  Nobuaki Mitamura

IPC分类号： G01J3/12 ,  G01J3/18 ,  G01J3/26 ,  G01J3/28 ,  G02B6/34 ,  G02B26/00 ,  G02B27/00 ,  G02B27/14 ,  G02F1/01 ,  G02F1/03

CPC分类号： G02B6/4246 ,  G01J3/0208 ,  G01J3/0286 ,  G01J3/18 ,  G01J3/26 ,  G01J3/2803 ,  G01J2003/1247 ,  G02B6/29311 ,  G02B6/29358 ,  G02B6/29373 ,  G02B6/29395 ,  G02B27/0087 ,  G02B27/1086 ,  G02B27/144 ,  G02F1/0147 ,  G02F1/03 ,  G02F2201/17 ,  G02F2203/055

摘要： A spectroscopic apparatus which is compact in size and performs high-precision light-splitting with a large angular dispersion. An optical input-processing section outputs a filtered transmitted light, using a bandpass filter that transmits only wavelength bands at one period of an input light, and collects the filtered transmitted light to generate a collected beam. An optic includes a first reflection surface and a second reflection surface which are high but asymmetric in reflectivity, and causes the collected beam incident thereon to undergo multiple reflections within an inner region between the first reflection surface and the second reflection surface, to thereby cause split beams to be emitted via the second reflection surface. A received light-processing section performs received light processing of the beams emitted from the optic. A control section variably controls at least one of a filter characteristic of the bandpass filter and an optical length through the optic.

摘要翻译： 一种尺寸紧凑并且具有大角度色散的高精度光分裂的分光装置。 光输入处理部分使用在输入光的一个周期仅发送波长带的带通滤波器来输出经滤波的透射光，并且收集被滤波的透射光以产生收集的光束。 光学元件包括反射率高但不对称的第一反射表面和第二反射表面，并且使入射到其上的收集的光束在第一反射表面和第二反射表面之间的内部区域内经历多次反射，从而导致分裂 经由第二反射面发射的光束。 接收到的光处理部分执行从光学元件发射的光束的接收光处理。 控制部分可变地控制带通滤波器的滤波器特性和通过光学器件的光学长度中的至少一个。

公开(公告)号：US06807008B2

公开(公告)日：2004-10-19

申请号：US10341380

申请日：2003-01-14

申请人： Nobuaki Mitamura

发明人： Nobuaki Mitamura

IPC分类号： G02B2700

CPC分类号： G02B6/29358 ,  G02B6/2938

摘要： A mirror which reflects input light from a lens which focuses light emitted from a VIPA, and returns the light to the lens is constituted as a multi-faced mirror including multiple reflection surfaces in the traveling direction of the input light which individually reflect light with a different wavelength, and have a different shape. As a result, an apparatus which has a small optical loss, and generates a different wavelength dispersion depending on a channel signal wavelength of a WDM signal.

摘要翻译： 反射来自聚焦从VIPA发出的光并将光返回到透镜的透镜的输入光的反射镜构成为包括在输入光的行进方向上具有多个反射面的多面镜， 波长不同，具有不同的形状。 结果，具有光损耗小的装置，并且根据WDM信号的信道信号波长产生不同的波长色散。

公开(公告)号：US06174085B1

公开(公告)日：2001-01-16

申请号：US09226032

申请日：1999-01-05

申请人： Tomonobu Yoshikawa ,  Nobuaki Mitamura

发明人： Tomonobu Yoshikawa ,  Nobuaki Mitamura

IPC分类号： F16C2906

CPC分类号： F16C29/0633 ,  F16C33/32 ,  F16C33/62 ,  F16C33/64 ,  Y10S384/912

摘要： A linear guide bearing device includes a rail, a bearing supported by the rail and rectilinearly movable along the axial direction of the rail, and rolling members interposed between the rail and the bearing to roll along with motion of the bearing. At least one of the rail and the bearing is made of induction-hardened steel including 0.6 to 0.9 wt % of carbon, 0.05 to 0.25 wt % of silicon, 0.3 to 0.9 wt % of manganese, 0.1 to 0.5 wt % of chromium, 0.2 to 1.0 wt % of molybdenum, and residual portion as iron and unavoidable impurities, and the induction-hardened steel has a total content of carbon, manganese, and molybdenum, which satisfies predetermined inequalities.

摘要翻译： 线性导向轴承装置包括轨道，由轨道支撑并且沿着轨道的轴向可直线运动的轴承，以及插入在轨道和轴承之间的滚动构件与轴承的运动一起滚动。 轨道和轴承中的至少一个由感应淬火钢制成，包括0.6至0.9重量％的碳，0.05至0.25重量％的硅，0.3至0.9重量％的锰，0.1至0.5重量％的铬，0.2 至1.0重量％的钼，剩余部分为铁和不可避免的杂质，并且感应淬火钢具有满足预定不等式的碳，锰和钼的总含量。

公开(公告)号：US6165100A

公开(公告)日：2000-12-26

申请号：US187607

申请日：1998-11-06

申请人： Nobuaki Mitamura ,  Tomonobu Yoshikawa ,  Yasuo Murakami

发明人： Nobuaki Mitamura ,  Tomonobu Yoshikawa ,  Yasuo Murakami

IPC分类号： F16H15/38 ,  F16H55/32

CPC分类号： F16H15/38

摘要： At least one of input/output disks, a power roller and a cam disk of a toroidal type continuously variable transmission is formed of a high-cleanness steel in which a size of a maximum inclusion is estimated by the following extremum statistical process. In step S1, a plane including a central line of the high-cleanness steel is cut out in a direction of rolling of the high-cleanness steel. In step S2, a portion d of the cut-out cross-section, which is defined by 40% of a diameter D in the vicinity of the central line, is used as a to-be-tested surface. In step S3, a test reference area S.sub.0 is set at an area not less than 300 mm.sup.2 within the to-be-tested surface, and a root of an area of the maximum inclusion is measured five times or more. In step S4, a maximum inclusion distribution straight line is obtained. In step S5, the root, that is, the size of the area of the maximum inclusion within an estimation area S is estimated.

摘要翻译： 输入/输出盘，动力辊和环形无级变速器的凸轮盘中的至少一个由高清洁度钢形成，其中通过以下极值统计过程估计最大夹杂物的尺寸。 在步骤S1中，在高洁净度钢的轧制方向上切断包括高洁净度钢的中心线的平面。 在步骤S2中，作为待测试表面，使用由中心线附近的直径D的40％定义的切口横截面的部分d。 在步骤S3中，将测试基准区域S0设定在待测试表面内的不小于300mm 2的区域，并且测量最大夹杂物的面积的根数是五次以上。 在步骤S4中，获得最大夹杂物分布直线。 在步骤S5中，估计根，即估计区域S内的最大包含区域的大小。

公开(公告)号：US6066068A

公开(公告)日：2000-05-23

申请号：US183630

申请日：1998-10-30

申请人： Hiromichi Takemura ,  Nobuaki Mitamura

发明人： Hiromichi Takemura ,  Nobuaki Mitamura

IPC分类号： C21D9/40 ,  C22C38/00 ,  C22C38/12 ,  F16C19/10 ,  F16H15/38

CPC分类号： F16H15/38 ,  Y10S384/912

摘要： A power roller bearing and input and output disks are made of a material containing 0.15 to 0.5 wt %, 0.15 to 1.5 wt %, and 0.1 to 1.5 wt % of C, Si, and Mo, respectively, and 9 ppm or less of oxygen. At least one component selected from the group consisting of the inner and outer rings and the input and output disks is subjected to carbonitriding, hardening, tempering and grinding, such that a finished surface hardness has a Vickers hardness of Hv720 or more and the hardness at a depth of Dx from the surface is Hv650 or more. The Dx is a critical equivalent stress generation position in a synthetic stress distribution and meets Dx=3.0 Zo to 5.0 Zo where Zo is a maximum dynamic shearing stress generation position from the surface.

摘要翻译： 动力滚子轴承和输入和输出盘由分别含有0.15至0.5重量％，0.15至1.5重量％和0.1至1.5重量％的C，Si和Mo以及9ppm或更少的氧的材料制成。 。 选自由内外环和输入和输出盘组成的组中的至少一种组分进行碳氮共渗，硬化，回火和研磨，使得成品表面硬度的维氏硬度为Hv720以上，硬度为 表面Dx的深度为Hv650以上。 Dx是合成应力分布中的关键等效应力产生位置，并且满足Dx = 3.0Zo至5.0Zo，其中Zo是来自表面的最大动态剪切应力产生位置。

公开(公告)号：US5989694A

公开(公告)日：1999-11-23

申请号：US877950

申请日：1997-06-17

申请人： Nobuaki Mitamura ,  Kazuo Sekino ,  Yasuo Murakami

发明人： Nobuaki Mitamura ,  Kazuo Sekino ,  Yasuo Murakami

IPC分类号： C22C38/22 ,  F16C33/30 ,  F16C19/49

CPC分类号： C22C38/22 ,  F16C33/30 ,  F16C33/62 ,  Y10S148/906 ,  Y10S384/907 ,  Y10S384/912 ,  Y10S384/913 ,  Y10T428/24942 ,  Y10T428/24983 ,  Y10T428/25

摘要： Disclosed is a rolling bearing comprising races and rolling elements, in which at least one of the races and the rolling elements has at least one of a carbide and a carbonitride precipitated in a surface layer thereof, inclusive of a cutting allowance, wherein the finished surface of at least one of the races and the rolling elements has a hardness of Hv600 to Hv700 at 300.degree. C. The rolling bearing has reliable wear resistance under severe conditions and thereby having an extended bearing life.

摘要翻译： 公开了一种滚动轴承，其包括种族和滚动元件，其中至少一个种类和滚动元件具有在其表面层中析出的碳化物和碳氮化物中的至少一种，包括切割余量，其中成品表面 的至少一个座圈和滚动元件在300℃下具有Hv600至Hv700的硬度。滚动轴承在恶劣条件下具有可靠的耐磨性，从而具有延长的轴承寿命。