公开(公告)号：US5270987A

公开(公告)日：1993-12-14

申请号：US509743

申请日：1990-04-17

申请人： Toshimitsu Kaku ,  Shigeru Nakamura ,  Masahiko Takahashi ,  Toshio Niihara ,  Harukazu Miyamoto ,  Norio Ohta ,  Takeshi Nakao ,  Hirofumi Sukeda ,  Masahiro Ojima ,  Takashi Toyooka ,  Tsuneo Suganuma ,  Fumiyoshi Kirino ,  Yoshinori Miyamura

发明人： Toshimitsu Kaku ,  Shigeru Nakamura ,  Masahiko Takahashi ,  Toshio Niihara ,  Harukazu Miyamoto ,  Norio Ohta ,  Takeshi Nakao ,  Hirofumi Sukeda ,  Masahiro Ojima ,  Takashi Toyooka ,  Tsuneo Suganuma ,  Fumiyoshi Kirino ,  Yoshinori Miyamura

IPC分类号： G11B11/105 ,  G11B11/00

CPC分类号： G11B11/10584 ,  G11B11/10536 ,  G11B11/10545 ,  G11B11/10552 ,  G11B11/10558 ,  G11B11/10593 ,  G11B11/10571

摘要： A magnetic field of a polarity corresponding to information to be recorded is applied while a recording spot having a high energy is irradiated to a magneto-optical recording medium to record domains representing the information along a track. The recorded domains are read out by a reproducing spot having a lower energy than the recording spot and a high resolution power along the track. A recording head has an optical system for irradiating the recording spot having the high energy to the magneto-optical recording medium and a magnetic head for applying a magnetic field having a polarity thereof switched in accordance with the information to be recorded, to an irradiation area of the recording spot, a reproducing head has an optical system for irradiating the reproducing spot having the low energy by a laser beam having a wavelength of no larger than 600 nm and a magneto-optical signal detector for detecting a displacement of a polarization plane of a reflected light of the reproducing spot to read out the recording domains. The magneto-optical recording medium is made of a recording film having a multi-layer structure of alternate lamination of metal layers and dielectric layers.

摘要翻译： 将具有高能量的记录点照射到磁光记录介质上，记录与记录信息对应的极性的磁场，记录表示信息沿着轨迹的域。 记录的区域由具有比记录点更低的能量的再现点和沿着轨道的高分辨率电力读出。 记录头具有用于向磁光记录介质照射具有高能量的记录点的光学系统和用于根据要记录的信息将其极性切换的磁场施加到照射区域 的记录点，再现头具有用于通过具有不大于600nm的波长的激光束照射具有低能量的再现点的光学系统和用于检测偏振面的位移的磁光信号检测器 再现点的反射光读出记录区域。 磁光记录介质由具有金属层和电介质层的交替叠层的多层结构的记录膜制成。

公开(公告)号：US4604577A

公开(公告)日：1986-08-05

申请号：US462765

申请日：1983-02-01

申请人： Hiroyoshi Matsumura ,  Toshio Katsuyama ,  Norio Ohta ,  Tsuneo Suganuma ,  Kazuyuki Nagatsuma ,  Yutaka Sugita

发明人： Hiroyoshi Matsumura ,  Toshio Katsuyama ,  Norio Ohta ,  Tsuneo Suganuma ,  Kazuyuki Nagatsuma ,  Yutaka Sugita

IPC分类号： G01R33/032 ,  G02F1/00 ,  G02F1/09 ,  G01R33/02 ,  G02B5/30

CPC分类号： G02F1/0036 ,  G01R33/0322

摘要： A measuring instrument of magnetic field utilizing Faraday rotation is disclosed in which a medium exhibiting Faraday rotation includes at least one thin magnetic garnet film magnetized in a propagation direction of light and having a composition expressed by a general formula R.sub.3-x Q.sub.x (Fe.sub.5-y M.sub.y)O.sub.12 (where R indicates at least one element selected from a group consisting of Y, La, Lu, Ca, Sm and Bi, Q indicates at least one element selected from a group consisting of Gd, Eu, Er, Tm, Tb, Yb, Ho and Dy, M is at least one element selected from a group consisting of Ga, Al, Ge, Si, Sc, Mn, In, V and Cr, the value of x lies in a range expressed by a formula 0.1.ltoreq.x.ltoreq.3.0, and the value of y lies in a range expressed by a formula 0.ltoreq.y.ltoreq.5.0). According to this instrument, stable measured values are obtained independently of temperature variation.

摘要翻译： 公开了利用法拉第旋转的磁场测量仪器，其中显示法拉第旋转的介质包括在光传播方向上被磁化并具有通式R3-xQx（Fe5-yMy）表示的组成的至少一个薄磁石榴石薄膜， O12（其中R表示选自Y，La，Lu，Ca，Sm和Bi中的至少一种元素，Q表示选自由Gd，Eu，Er，Tm，Tb，Yb组成的组中的至少一种元素） ，Ho和Dy，M是选自Ga，Al，Ge，Si，Sc，Mn，In，V和Cr中的至少一种元素，x的值在由式0.1表示的范围内， = x <= 3.0，y的值位于由公式0表示的范围内。 根据该仪器，独立于温度变化获得稳定的测量值。

公开(公告)号：US4581579A

公开(公告)日：1986-04-08

申请号：US545643

申请日：1983-10-26

申请人： Kazuyuki Nagatsuma ,  Hiroyoshi Matsumura ,  Tsuneo Suganuma ,  Norio Ohta ,  Keikichi Ando ,  Yuzuru Hosoe ,  Yutaka Sugita

发明人： Kazuyuki Nagatsuma ,  Hiroyoshi Matsumura ,  Tsuneo Suganuma ,  Norio Ohta ,  Keikichi Ando ,  Yuzuru Hosoe ,  Yutaka Sugita

IPC分类号： G01R33/032 ,  G02F1/09 ,  G01R33/02 ,  G02B5/30 ,  G02F1/29 ,  G02F1/31

CPC分类号： G01R33/0322

摘要： In a magnetic-field measuring apparatus having a Faraday rotation property, a medium having the Faraday rotation property includes at least one magnetic garnet thin film having a composition represented by a general formula of R.sub.3 (Fe.sub.5-x M.sub.x)O.sub.12 (where R is at least one element selected from a group consisting of La, Sm, Lu, Ca and Bi, or at least two elements selected from the group with Y being added thereto, M is at least one element selected from a group consisting of Ga, Ge, Al, Si, Sc, In and Cr, and a range of x is 0.ltoreq.x.ltoreq.1.5), and magnetized in a direction of light transmission, whereby an overall temperature characteristic of a ratio (4.pi.Ms/Ho) of a saturation flux density 4.pi.Ms to a collapse field Ho of a strip domain of the thin film is improved. The magnetic-field measuring apparatus offers a stable measurement of magnetic-field irrespective of a temperature change.

摘要翻译： 在具有法拉第旋转特性的磁场测量装置中，具有法拉第旋转特性的介质包括至少一种具有由通式R3（Fe5-xMx）O12表示的组成的磁性石榴石薄膜（其中R至少为 选自La，Sm，Lu，Ca和Bi中的一种元素，或选自添加有Y的基团中的至少两种元素，M为选自Ga，Ge，Al中的至少一种元素 ，Si，Sc，In和Cr，x的范围为0

公开(公告)号：US4505729A

公开(公告)日：1985-03-19

申请号：US542186

申请日：1983-10-14

申请人： Hiroyoshi Matsumura ,  Toshio Katsuyama ,  Tsuneo Suganuma

发明人： Hiroyoshi Matsumura ,  Toshio Katsuyama ,  Tsuneo Suganuma

IPC分类号： C03B20/00 ,  C03B37/012 ,  C03B37/018 ,  G02B6/00 ,  C03C25/02

CPC分类号： C03B37/01248 ,  C03B37/01217 ,  C03B37/01225 ,  C03B37/018 ,  C03B2203/24 ,  C03B2203/30

摘要： A method of producing a preform for a single-polarization optical fiber wherein a glass rod to become a core or a glass rod to become a clad is inserted into a quartz tube which has on its inner wall surface a glass thin film to become a clad layer, a glass thin film to become a jacket layer or glass films to become a jacket layer and a clad layer, and wherein under a state under which the internal pressure of the quartz tube is reduced, the quartz tube is heated to become solid, whereby at least one of the clad and the jacket of the optical fiber preform becomes elliptic in cross section.

摘要翻译： 一种制造用于单极化光纤的预成型体的方法，其中将成为芯的玻璃棒或成为包层的玻璃棒插入到其内壁表面上具有玻璃薄膜以成为包层的石英管中 层，成为护套层的玻璃薄膜或成为护套层和覆盖层的玻璃膜，并且其中在石英管的内部压力降低的状态下，石英管被加热变得固体， 由此光纤预制件的包层和护套中的至少一个横截面变为椭圆形。

公开(公告)号：US4324576A

公开(公告)日：1982-04-13

申请号：US209711

申请日：1980-11-21

申请人： Iwao Matsuyama ,  Kenzo Susa ,  Shin Satoh ,  Tsuneo Suganuma

发明人： Iwao Matsuyama ,  Kenzo Susa ,  Shin Satoh ,  Tsuneo Suganuma

IPC分类号： C01B33/16 ,  C03B8/02 ,  C03B19/12 ,  C03B37/016 ,  C03C3/04 ,  C03C13/04 ,  C03C3/06

CPC分类号： C01B33/163 ,  C03B19/12 ,  C03B37/016 ,  C03C13/045 ,  C03C3/04 ,  Y02P40/57 ,  Y10S65/901

摘要： A method for producing optical glass, which comprises charging a mixed solution capable of forming a high-silica-content gel by hydrolysis reaction into a vessel, the inner wall face of which is composed of a material unwettable to the mixed solution, such as a fluorocarbon resin or silicone resin, causing gelation of the mixed solution in the vessel, drying the obtained gel, and heating and sintering the obtained dry gel. When electrodes are placed in the mixed solution at the gelation step and an electric voltage is applied, the time required for formation of the gel is shortened. Furthermore, at the gel-drying step, if the amount of materials evaporated from the gel is detected or the weight of the gel is measured, the detected amount of the evaporated materials or the change of the weight of the gel is fed back to a factor regulating the drying speed, such as the drying temperature to control the drying speed to an appropriate level.

摘要翻译： 一种光学玻璃的制造方法，其特征在于，将能够通过水解反应形成高二氧化硅含量凝胶的混合溶液装入容器内，该容器的内壁面由不能混合的溶液的材料构成， 氟树脂或有机硅树脂，使混合溶液凝胶化，容器干燥，加热烧结得到的干凝胶。 当在凝胶化步骤中将电极置于混合溶液中并施加电压时，形成凝胶所需的时间缩短。 此外，在凝胶干燥步骤中，如果检测到从凝胶蒸发的材料的量或测量凝胶的重量，则将检测到的蒸发材料量或凝胶重量的改变反馈至 调节干燥速度的因素，如干燥温度，将干燥速度控制在适当的水平。

公开(公告)号：US4786553A

公开(公告)日：1988-11-22

申请号：US30600

申请日：1987-03-27

申请人： Yoshihiro Shiroishi ,  Sadao Hishiyama ,  Hiroyuki Suzuki ,  Norikazu Tsumita ,  Tsuneo Suganuma ,  Yoshio Gobara ,  Masaaki Hayashi ,  Makoto Sano ,  Takaaki Shirakura

发明人： Yoshihiro Shiroishi ,  Sadao Hishiyama ,  Hiroyuki Suzuki ,  Norikazu Tsumita ,  Tsuneo Suganuma ,  Yoshio Gobara ,  Masaaki Hayashi ,  Makoto Sano ,  Takaaki Shirakura

IPC分类号： G11B5/64 ,  H01F10/10 ,  H01F10/26

CPC分类号： G11B5/64 ,  Y10S428/90 ,  Y10T428/1266 ,  Y10T428/12854 ,  Y10T428/12944 ,  Y10T428/265

摘要： A magnetic recording medium comprises a non-magnetic substrate and a thin magnetic film, the thin magnetic film being composed mainly of Co, Ni and at least one of Zr and Hf, and a concentration of Zr, Hf or Zr and Hf as contained in the thin magnetic film being 0.1 to 30% by atom on the basis of the total of Co and Ni, and has a considerably higher corrosion resistance than that of the conventional magnetic recording medium having a thin Co-Ni magnetic film.

摘要翻译： 磁记录介质包括非磁性基片和薄磁膜，该薄磁膜主要由Co，Ni和Zr和Hf中的至少一种组成，Zr，Hf或Zr和Hf的浓度包含在 基于Co和Ni的总和，薄磁膜为0.1至30原子％，并且具有比具有薄Co-Ni磁性膜的常规磁记录介质更高的耐腐蚀性。

公开(公告)号：US4570064A

公开(公告)日：1986-02-11

申请号：US513314

申请日：1983-07-13

申请人： Kazuyuki Nagatsuma ,  Hiroyoshi Matsumura ,  Toshio Katsuyama ,  Tsuneo Suganuma

发明人： Kazuyuki Nagatsuma ,  Hiroyoshi Matsumura ,  Toshio Katsuyama ,  Tsuneo Suganuma

IPC分类号： G01R29/08 ,  G01R15/24 ,  G01R19/00 ,  G01R29/12 ,  G01D5/34

CPC分类号： G01R15/242 ,  G01R29/12

摘要： An electric-field measuring apparatus utilizing electrooptic effect for measuring the intensity of an electric DC field includes a material exhibiting both electrooptic effect and photoelectric effect or both a material exhibiting the electrooptic effect and a material exhibiting the photoelectric effect which material or materials are irradiated with a continuous light ray of a wavelength capable of inducing the electrooptic effect and an intermittently interrupted light ray of a wavelength capable of inducing the photoelectric effect.

摘要翻译： 利用电光效应测量电场的强度的电场测量装置包括既具有电光效应又具有光电效应的材料，或具有电光效应的材料和表现出光电效应的材料，该材料或材料被照射 能够引起电光效应的波长的连续光线以及能够引起光电效应的波长的间歇性中断的光线。

公开(公告)号：US4185890A

公开(公告)日：1980-01-29

申请号：US734310

申请日：1976-10-20

申请人： Seiichi Onoda ,  Toshiki P. Tanaka ,  Tsuneo Suganuma ,  Koji Ishida ,  Masao Sumi

发明人： Seiichi Onoda ,  Toshiki P. Tanaka ,  Tsuneo Suganuma ,  Koji Ishida ,  Masao Sumi

IPC分类号： G02B6/028 ,  G02B6/036 ,  G02B5/14

CPC分类号： G02B6/03627 ,  G02B6/0288

摘要： In order to expand the product between the transmission length and the transmission bandwidth of an optical fiber for use in the optical communication and to facilitate the connection between the optical fibers, the optical fiber is made of transparent materials of three concentric layers of a core whose refractive index gradually decreases in the radial direction from the center, an intermediate layer which has a uniform refractive index lower than the varying refractive index of the core, and a cladding which has a uniform refractive index substantially equal to the lowest refractive index of the core.

摘要翻译： 为了在光通信中使用的光纤的传输长度和传输带宽之间扩大产品并且促进光纤之间的连接，光纤由具有核心的三个同心层的透明材料制成， 折射率从中心沿半径方向逐渐减小，具有低于芯的折射率变化的折射率均匀的中间层和具有基本上等于芯的最低折射率的均匀折射率的包层 。

公开(公告)号：US4426216A

公开(公告)日：1984-01-17

申请号：US337451

申请日：1982-01-06

申请人： Shin Satoh ,  Kenzo Susa ,  Iwao Matsuyama ,  Tsuneo Suganuma

发明人： Shin Satoh ,  Kenzo Susa ,  Iwao Matsuyama ,  Tsuneo Suganuma

IPC分类号： C03B19/12 ,  C03C1/00 ,  C03B19/06

CPC分类号： C03B19/12 ,  C03C1/006 ,  C03B2201/02 ,  C03B2201/03 ,  C03B2201/04 ,  C03B2201/06 ,  C03B2201/07 ,  C03B2201/075 ,  Y10S65/901

摘要： Optical glass is produced by heating a porous gel to a high temperature to partly sinter it, heating it in a chlorine-containing atmosphere to subject it to hydroxyl group removal treatment, and then further heating it to sinter it. The optical glass produced by this process does not rise in bubbles even when heated.

摘要翻译： 通过将多孔凝胶加热至高温部分烧结而制成光学玻璃，在含氯气氛中加热，进行羟基去除处理，然后进一步加热烧结。 通过该方法制造的光学玻璃即使在加热时也不会起泡。

公开(公告)号：US4426129A

公开(公告)日：1984-01-17

申请号：US223747

申请日：1981-01-09

申请人： Hiroyoshi Matsumura ,  Toshio Katsuyama ,  Tsuneo Suganuma

发明人： Hiroyoshi Matsumura ,  Toshio Katsuyama ,  Tsuneo Suganuma

IPC分类号： C03B37/012 ,  C03B37/018 ,  C03C13/04 ,  G02B6/10 ,  G02B5/14 ,  C03B19/00

CPC分类号： G02B6/105 ,  C03B37/01217 ,  C03B37/018 ,  C03B37/01861 ,  C03C13/045 ,  C03B2201/10 ,  C03B2203/10 ,  C03B2203/12 ,  C03B2203/22 ,  C03B2203/30

摘要： A glass layer is formed inside a silica glass tube and another glass layer having a refractive index higher than that of the abovementioned glass layer is formed on said glass layer. After these glass layers are formed, one end of the glass tube is collapsed. While the internal pressure of the glass tube is being reduced below the atmospheric pressure, the glass tube is caused to collapse by heating, thereby yielding a preform for an optical fiber. The optical fiber produced from this preform has the difference in the refractive indices of the two orthogonal major axes of at least 1.6.times.10.sup.-4 and maintains the linear polarization plane.

摘要翻译： 在石英玻璃管内形成玻璃层，在玻璃层上形成折射率高于上述玻璃层的玻璃层。 在形成这些玻璃层之后，玻璃管的一端收缩。 当玻璃管的内部压力降低到低于大气压力时，玻璃管通过加热而塌陷，从而产生用于光纤的预成型件。 由该预成型件制造的光纤具有至少1.6×10 -4的两个正交长轴的折射率差并保持线偏振面。