公开(公告)号：US06950596B2

公开(公告)日：2005-09-27

申请号：US10716904

申请日：2003-11-19

申请人： Akira Yahagi ,  Shigeru Kasai ,  Tatsumi Ide ,  Michikazu Kondo

发明人： Akira Yahagi ,  Shigeru Kasai ,  Tatsumi Ide ,  Michikazu Kondo

IPC分类号： G02B26/02 ,  B81B3/00 ,  B81B7/04 ,  G02B6/26 ,  G20B6/26

CPC分类号： G02B6/266

摘要： A variable optical attenuator comprises an incoming fiber for propagating an incoming light beam, a mirror for reflecting the incoming light beam as a reflected light beam and an outgoing fiber for propagating as an outgoing light beam at least one part of the reflected light beam. The light intensity of the outgoing light beam is determined by the angle of reflection at the mirror. The angle of reflection at the mirror is adjusted by an actuator for rotating the mirror. The actuator comprises a plate, a coil, a housing and permanents magnets. The mirror and the coil are fixed on the plate. The housing supports the plate so that the plate is able to rotate around a rotation axis, which is included on a predetermined plane. The permanent magnets are fixed on the housing and generate predetermined magnetic flux density along the predetermined plane. When a driving current is supplied to the coil under the predetermined magnetic flux density, a Lorentz force occurs at the coil so as to rotate the coil. Together with the coil, the mirror rotates so that the light intensity of the outgoing light beam can be adjusted.

摘要翻译： 可变光衰减器包括用于传播入射光束的入射光纤，用于反射作为反射光束的入射光束的反射镜和用于作为输出光束传播至少一部分反射光束的输出光纤。 出射光束的光强度由反射镜的反射角决定。 通过用于旋转镜子的致动器来调节镜子处的反射角度。 致动器包括板，线圈，壳体和永磁体。 镜子和线圈固定在板上。 壳体支撑板，使得板能够绕包含在预定平面上的旋转轴线旋转。 永久磁铁被固定在壳体上并沿预定平面产生预定的磁通密度。 当以预定的磁通密度向线圈提供驱动电流时，在线圈处产生洛仑兹力以使线圈旋转。 与线圈一起，镜子旋转，从而可以调节出射光束的光强度。

公开(公告)号：US09470915B2

公开(公告)日：2016-10-18

申请号：US14005053

申请日：2012-03-15

申请人： Shinji Makikawa ,  Akira Yahagi ,  Akio Ikesue

发明人： Shinji Makikawa ,  Akira Yahagi ,  Akio Ikesue

IPC分类号： C04B35/50 ,  G02F1/09 ,  C04B35/505 ,  C04B35/645 ,  C04B35/626 ,  G02F1/00

CPC分类号： G02F1/093 ,  C04B35/50 ,  C04B35/505 ,  C04B35/62685 ,  C04B35/645 ,  C04B35/6455 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3232 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3286 ,  C04B2235/3287 ,  C04B2235/3418 ,  C04B2235/3852 ,  C04B2235/445 ,  C04B2235/661 ,  C04B2235/664 ,  C04B2235/762 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2235/81 ,  C04B2235/9653 ,  G02F1/0036

摘要： A transparent ceramic having terbium oxide (Tb2O3) in a molar ratio of at least 40%; and at least one oxide selected among an yttrium oxide, a scandium oxide, and a lanthanide rare earth oxide, wherein (1) the crystal structure of the terbium-oxide-based ceramic does not contain a non-cubic-crystal phase, (2) the mean crystal particle diameter is in a range of 0.5 to 100 μm, and (3) the ceramic comprises a sintering auxiliary having no incidence of deposition of a non-cubic-crystal phase in the crystal structure of the terbium-oxide-based ceramic. This transparent ceramic makes a magneto-optical element that performs at least as well as terbium gallium garnet or other existing monocrystal materials. It also makes a functional element for an optical isolator in the infrared region between 500 nm and 1.5 μm having very little scattering and very few birefringence components.

摘要翻译： 具有至少40％摩尔比的氧化铽（Tb 2 O 3）的透明陶瓷; 和选自氧化钇，氧化钪和镧系稀土氧化物中的至少一种氧化物，其中（1）铽氧化物系陶瓷的晶体结构不含非立方晶相，（2 ），平均结晶粒径为0.5〜100μm的范围，（3）陶瓷包含在氧化铽基的晶体结构中没有沉积非立方结晶相的烧结助剂 陶瓷。 该透明陶瓷制成至少具有铽镓石榴石或其它现有单晶材料的磁光元件。 它还使得在500nm和1.5μm之间的红外区域中的光隔离器的功能元件具有非常少的散射和非常少的双折射分量。

公开(公告)号：US4785034A

公开(公告)日：1988-11-15

申请号：US022054

申请日：1987-03-03

申请人： Morio Gaku ,  Hidenori Kimbara ,  Akira Yahagi ,  Takaaki Osanai

发明人： Morio Gaku ,  Hidenori Kimbara ,  Akira Yahagi ,  Takaaki Osanai

IPC分类号： C08L23/02 ,  C08K5/13 ,  C08K5/17 ,  C08K5/315 ,  C08K5/34 ,  C08K7/00 ,  C08K13/02 ,  C08L7/00 ,  C08L21/00 ,  C08L23/00 ,  C08L33/00 ,  C08L33/02 ,  C08L101/00 ,  C08K5/16

CPC分类号： C08K5/315 ,  C08K5/13 ,  C08K5/34

摘要： A stabilized polyolefin resin composition in which (a) 0.005-5% by weight of at least one monofunctional or polyfunctional cyanate ester compound having at least one cyanato group in its molecule, (b) 0.01-5% by weight of at least one hindered amine ultraviolet absorber and (c) 0.005-2% by weight of at least one hindered phenolic antioxidant are incorporated into a polyolefin resin is disclosed. The resin composition has excellent heat stability and resistance to weathering.

摘要翻译： 一种稳定化的聚烯烃树脂组合物，其中（a）0.005-5重量％的至少一种在其分子中具有至少一个氰酸根的单官能或多官能氰酸酯化合物，（b）0.01-5重量％的至少一个受阻剂 胺类紫外线吸收剂和（c）0.005-2％重量的至少一种受阻酚类抗氧化剂被掺入到聚烯烃树脂中。 树脂组合物具有优异的热稳定性和耐候性。

公开(公告)号：US20140002900A1

公开(公告)日：2014-01-02

申请号：US14005053

申请日：2012-03-15

申请人： Shinji Makikawa ,  Akira Yahagi ,  Akio Ikesue

发明人： Shinji Makikawa ,  Akira Yahagi ,  Akio Ikesue

IPC分类号： G02F1/09 ,  C04B35/50

CPC分类号： G02F1/093 ,  C04B35/50 ,  C04B35/505 ,  C04B35/62685 ,  C04B35/645 ,  C04B35/6455 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3232 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3286 ,  C04B2235/3287 ,  C04B2235/3418 ,  C04B2235/3852 ,  C04B2235/445 ,  C04B2235/661 ,  C04B2235/664 ,  C04B2235/762 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2235/81 ,  C04B2235/9653 ,  G02F1/0036

摘要： A transparent ceramic having terbium oxide (Tb2O3) in a molar ratio of at least 40%; and at least one oxide selected among an yttrium oxide, a scandium oxide, and a lanthanide rare earth oxide, wherein (1) the crystal structure of the terbium-oxide-based ceramic does not contain a non-cubic-crystal phase, (2) the mean crystal particle diameter is in a range of 0.5 to 100 μm, and (3) the ceramic comprises a sintering auxiliary having no incidence of deposition of a non-cubic-crystal phase in the crystal structure of the terbium-oxide-based ceramic. This transparent ceramic makes a magneto-optical element that performs at least as well as terbium gallium garnet or other existing monocrystal materials. It also makes a functional element for an optical isolator in the infrared region between 500 nm and 1.5 μm having very little scattering and very few birefringence components.

摘要翻译： 具有至少40％摩尔比的氧化铽（Tb 2 O 3）的透明陶瓷; 和选自氧化钇，氧化钪和镧系稀土氧化物中的至少一种氧化物，其中（1）铽氧化物系陶瓷的晶体结构不含非立方晶相，（2 ），平均结晶粒径在0.5〜100μm的范围内，（3）陶瓷包含在氧化铽基的晶体结构中没有沉积非立方结晶相的烧结助剂 陶瓷。 该透明陶瓷制成至少具有铽镓石榴石或其它现有单晶材料的磁光元件。 它还使得在500nm和1.5μm之间的红外区域中的光隔离器的功能元件具有非常小的散射和非常少的双折射分量。

公开(公告)号：US09013792B2

公开(公告)日：2015-04-21

申请号：US13421021

申请日：2012-03-15

申请人： Akira Yahagi ,  Toshiaki Watanabe

发明人： Akira Yahagi ,  Toshiaki Watanabe

IPC分类号： G02F1/09 ,  C30B11/00 ,  C30B13/00 ,  C30B15/08 ,  C30B29/24

CPC分类号： G02F1/093 ,  C30B11/00 ,  C30B13/00 ,  C30B15/08 ,  C30B29/24 ,  H01F7/0273

摘要： An optical module is provided that includes a Faraday rotator having a Verdet constant at a wavelength of 1.06 μm of at least 0.27 min/(Oe·cm), a first hollow magnet disposed on the outer periphery of the Faraday rotator, and second and third hollow magnet units disposed so as to sandwich the first hollow magnet on the optical axis. The second and third hollow magnet units include 2 or more magnets equally divided in a direction of 90 degrees relative to the optical axis. A magnetic flux density B (Oe) applied to the Faraday rotator is in the range of 0.5×104≦B≦1.5×104. The Faraday rotator is disposed on a sample length L (cm) in the range of 0.70≦L≦1.10, and has an external diameter D (cm) in the range of 0.20≦D≦0.60.

摘要翻译： 提供一种光学模块，其包括具有至少0.27分钟/（Oe·cm）的波长为1.06μm的Verdet常数的法拉第旋转器，设置在法拉第旋转器的外周的第一中空磁体，以及第二和第三 中空磁体单元设置成将第一中空磁体夹在光轴上。 第二和第三中空磁体单元包括相对于光轴在90度的方向上等分的2个以上的磁体。 施加到法拉第旋转器的磁通密度B（Oe）在0.5×104