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    • 3. 发明专利
    • Bi-SUBSTITUTED RARE EARTH IRON GARNET SINGLE CRYSTAL, METHOD FOR PRODUCING SAME AND OPTICAL DEVICE
    • 双重选择的稀土红土GARNET单晶,其生产方法和光学器件
    • JP2012012283A
    • 2012-01-19
    • JP2010286830
    • 2010-12-23
    • Namiki Precision Jewel Co Ltd並木精密宝石株式会社
    • SHIRAKI KENICHIFUKUHARA TAKASHINARITA KENJI
    • C30B29/28C30B19/04H01F1/34
    • C01G49/02C01G49/0018C01G49/0054C01P2002/52C01P2002/54C30B19/02C30B29/28G02F1/09H01F10/24
    • PROBLEM TO BE SOLVED: To provide a garnet single crystal which contains no lead while using a crucible made of platinum, is free from deterioration in quality and rich in mass-productivity, and has an insertion loss of ≤0.10 dB.SOLUTION: A Bi-substituted rare earth iron garnet single crystal has a composition represented by RBiFeAO(wherein, R must contain Gd, and may optionally contain at least one rare earth element; A represents at least one element selected from a group consisting of Ga, Al, In, or the like; x is >0.7 and ≤1.5; and w is >0 and ≤1.5), does not contain Pb but contains Pt, and contains Mn or at least one element of the group II elements. When Mn or the at least one element of the group II elements is expressed as M, the concentration (atppm) of M in the Bi-substituted rare earth iron garnet single crystal is expressed as [M], and the concentration (atppm) of Pt is expressed as [Pt], and further, the relational expression Δ of [M] and [Pt] is represented as Δ=(0.8[M])-[Pt], the value of Δ is set to be within the range of -0.34 to 2.87 atppm.
    • 要解决的问题:为了提供在使用铂制坩埚时不含铅的石榴石单晶,其质量没有劣化并且生产率高,并且具有≤0.10dB的插入损耗。 解决方案:双取代稀土铁石榴石单晶具有由R 3-x Bi x 12 (其中,R必须包含 Gd,并且可以任选地含有至少一种稀土元素; A表示选自由Ga,Al,In等组成的组中的至少一种元素; x> 0.7和≤1.5;并且w> 0和≤ 1.5),不含Pb但含有Pt,并含有Mn或II族元素的至少一种元素。 当Mn或II族元素中的至少一种元素表示为M时,Bi取代稀土铁石榴石单晶中M的浓度(atppm)表示为[M],浓度(atppm)表示为 Pt表示为[Pt],此外,[M]和[Pt]的关系式Δ表示为Δ=(0.8 [M]) - [Pt],Δ的值被设定在范围 为-0.34至2.87 atppm。 版权所有(C)2012,JPO&INPIT
    • 4. 发明专利
    • Polarizer
    • 偏振器
    • JP2007065175A
    • 2007-03-15
    • JP2005249505
    • 2005-08-30
    • Namiki Precision Jewel Co Ltd並木精密宝石株式会社
    • HIROI NORIYOSHISHIRAKI KENICHI
    • G02B5/30
    • PROBLEM TO BE SOLVED: To provide a polarizer, of which the polarizing characteristic is improved by stacking respective polarizing films or polarizing parts so that respective conductive bodies of a plurality of polarizing films (or polarizing parts) intersect each another. SOLUTION: The polarizer is formed, by stacking the plurality of polarizing films which are constituted of conductive bodies and light-transmitting dielectrics and have a stripe structure, on the light-transmitting substrate surface. Furthermore, when the acute angle of a crossing angle formed by the conductive bodies themselves, as viewed from the flat plane direction is θ, the respective polarizing films are stacked so as to intersect one another in the angle range of 0°≤θ≤60°. Accordingly, an outgoing polarized component is made small, the degree of polarization of outgoing light with respect to incident light is made small and the extinction ratio is improved. Furthermore, by setting intervals of the conductive bodies in the respective polarizing films so that the intervals differ for each polarizing films, transmission loss of the polarizer is reduced. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种通过层叠各个偏振膜或偏振部分使得多个偏振膜(或偏振部件)中的各个导电体彼此相交的偏振特性来提供偏振器。 解决方案:通过在透光性基板表面上堆叠由导电体和透光电介质构成的并具有条纹结构的多个偏光膜形成偏振片。 此外,当从平面方向观察时,由导电体本身形成的交叉角的锐角为θ时,各个偏光膜被层叠成0°≤θ≤60°的角度范围 °。 因此,使出射偏振分量变小,出射光相对入射光的偏振度变小,消光比提高。 此外,通过设置各偏振膜中的导电体的间隔使得对于每个偏振膜的间隔不同,偏振器的透射损失减小。 版权所有(C)2007,JPO&INPIT
    • 5. 发明专利
    • Bismuth substitution type terbium-iron-garnet single crystal
    • BISMUTH替代型TERBIUM-IRON-GARNET单晶
    • JP2006117492A
    • 2006-05-11
    • JP2004309259
    • 2004-10-25
    • Namiki Precision Jewel Co Ltd並木精密宝石株式会社
    • SHIRAKI KENICHIFUKUHARA TAKASHIIMAIZUMI NOBUO
    • C30B29/28G02F1/09
    • PROBLEM TO BE SOLVED: To provide a method for manufacturing a garnet single crystal for which Tb is used as a host rare earth element and where the temperature characteristics of a Faraday rotation angle is improved noticeably and to provide the garnet single crystal. SOLUTION: The garnet single crystal is manufactured by an LPE method so that the grating constant of a bismuth substitution type terbium-iron-garnet single crystal for a band range of 1.3 μm wavelength is 12.469 Å or more and 12.472 Å or less and the grating constant of the bismuth substitution type terbium-iron-garnet single crystal for a band range of 1.5 μm wavelength is 12.464 Å or more and 12.471 Å or less. Lead oxide (PbO) and boron oxide (B 2 O 3 ) as a flux agents and the powders of terbium oxide (Tb 4 O 7 ), bismuth oxide (Bi 2 O 3 ) and iron oxide (Fe 2 O 3 ) as metal oxides to form an oxide garnet epitaxial film are mixed and melted. The garnet single crystal is grown by dipping a non-magnetic garnet crystal substrate having the compositional formula of (GdCa) 3 (GaMgZr) 5 O 12 in the liquid surface of a molten liquid. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种用于制造作为主体稀土元素的Tb的石榴石单晶的方法,其中法拉第旋转角的温度特性明显改善并提供石榴石单晶。 解决方案:石榴石单晶通过LPE方法制造,使得在1.3μm波长范围内的铋取代型铽 - 铁 - 石榴石单晶的光栅常数为12.469或更大并且为12.472或更小 并且对于1.5μm波长的波段范围,铋取代型铽 - 铁 - 石榴石单晶的光栅常数为12.464埃或更大,为12.471埃或更小。 作为助熔剂的氧化铅(PbO)和氧化硼(B 2 O 3 )和氧化铽(Tb 4 SB> 7 ),氧化铋(Bi O 3 )和氧化铁(Fe 2 / SB>)作为金属氧化物形成氧化物石榴石外延膜混合并熔融。 石榴石单晶通过浸渍具有组成式(GdCa) 3 (GaMgZr) 5 12 的非磁性石榴石晶体基板而生长 在熔融液体的液面中。 版权所有(C)2006,JPO&NCIPI
    • 6. 发明专利
    • Bi-SUBSTITUTED RARE-EARTH IRON GARNET SINGLE CRYSTAL AND METHOD FOR PRODUCING THE SAME, AND OPTICAL DEVICE
    • 双取向稀土铁GARNET单晶及其制造方法及光学装置
    • JP2011011945A
    • 2011-01-20
    • JP2009157494
    • 2009-07-02
    • Namiki Precision Jewel Co Ltd並木精密宝石株式会社
    • SHIRAKI KENICHIFUKUHARA TAKASHINARITA KENJI
    • C30B29/28C30B19/04G02B27/28G02F1/09
    • PROBLEM TO BE SOLVED: To provide a Bi-substituted rare-earth iron garnet single crystal which is obtained by using a platinum crucible and yet does not contain lead so as to avoid the adverse effects of lead on environment, is free from deterioration in quality and is excellent in mass productivity and has an IL (Insertion Loss) of ≤0.10 dB.SOLUTION: The Bi-substituted rare-earth iron garnet single crystal does not contain Pb, however contains Pt and further, Mn or at least one element of group 2 elements is added thereto, and when Mn or at least one element of the group 2 elements is expressed as M, and the concentration (atppm) of the M and the concentration (atppm) of Pt in the single crystal are expressed as [M] and [Pt], respectively, the value of relational expression Δ between [M] and [Pt] is set to be ≥-0.31 atppm and ≤2.08 atppm.
    • 要解决的问题:为了提供通过使用铂坩埚而不含铅的Bi取代的稀土类铁石榴石单晶,以避免铅对环境的不利影响,不会降低质量 并且具有优异的批量生产率,并且具有≤0.10dB的IL(插入损耗)。解决方案:双取代稀土铁石榴石单晶不含Pb,但是含有Pt,还含有Mn或至少一种元素 将2族元素添加到其中,并且当将Mn或第2族元素中的至少一种元素表示为M时,单晶中的M的浓度(atppm)和Pt的浓度(atppm)表示为[ M]和[Pt]时,[M]和[Pt]之间的关系表达式Δ的值设定为≥0.31ppm和≤2.08ppm。
    • 8. 发明专利
    • Polarizer
    • 偏振器
    • JP2007121777A
    • 2007-05-17
    • JP2005315234
    • 2005-10-28
    • Namiki Precision Jewel Co Ltd並木精密宝石株式会社
    • HIROI NORIYOSHISHIRAKI KENICHI
    • G02B5/30
    • PROBLEM TO BE SOLVED: To provide a polarizer capable of extension of a wavelength band in which polarization operation is permitted, improvement of extinction ratio and simplification of manufacturing process and also capable of reduction of manufacturing time and cost reduction. SOLUTION: The polarizer is constituted by stacking a plurality of polarizing films of a fringe structure composed of conductive bodies and light transmitting dielectric bodies on a light transmitting substrate surface. Widths of the conductive bodies of all polarizing films are set to be equal to one another, and respective conductive bodies are arranged in parallel such that the interval of parallel arrangement of the respective conductive bodies becomes equal to that in all of the polarizing films. Further, when viewing from the light incident direction, the respective conductive bodies extended to respective polarizing films are arranged in a regular interval to each other by using the interval defined by the ratio of (interval between conductive bodies in the polarizing film per one layer/the number of stacked polarizing films). COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种能够延伸允许极化操作的波长带的偏振器,消光比的改善和制造工艺的简化,并且还能够减少制造时间和降低成本。 解决方案:偏振器通过在透光衬底表面上堆叠由导电体和透光电介质构成的条纹结构的多个偏振膜构成。 所有偏振膜的导电体的宽度被设定为彼此相等,并且各导电体平行布置,使得各个导电体的并联布置的间隔变得等于所有偏振膜的间隔。 此外,当从光入射方向观察时,通过使用由(每层中的偏振膜中的导电体之间的间隔)定义的间隔以规则的间隔彼此布置延伸到各个偏振膜的各个导电体, 叠层偏振膜的数量)。 版权所有(C)2007,JPO&INPIT
    • 9. 发明专利
    • Faraday rotator for short-wavelength light and optical isolator equipped with same
    • 用于短波长光束的FARADAY旋转器和配备有光学隔离器的光学隔离器
    • JP2008158314A
    • 2008-07-10
    • JP2006347787
    • 2006-12-25
    • Namiki Precision Jewel Co Ltd並木精密宝石株式会社
    • SHIRAKI KENICHIIKEGAI KAZUAKIFUKUHARA TAKASHI
    • G02B27/28
    • G02F1/093G02B27/28G02F1/0036
    • PROBLEM TO BE SOLVED: To provide a Faraday rotator which can be used for a light source in a comparatively shorter wavelength region than a near-infrared wavelength region by making the thickness of a paramagnetic garnet single crystal containing Tb hardly having an optical absorption as a host rare-earth element thinner up to a level where the paramagnetic garnet single crystal can be used for the Faraday rotator, while suppressing the optical absorption, and to provide an optical isolator. SOLUTION: The Faraday rotator for short-wavelength light is configured including the paramagnetic garnet single crystal and a bismuth-substituted rare earth iron garnet single crystal. The paramagnetic garnet single crystal contains Tb as the host rare-earth element and has a light transmittance of over 99% with respect to light in a wavelength region of 1,030 nm to 1,090 nm. The Faraday rotation directions of the paramagnetic garnet single crystal and the bismuth-substituted rare-earth iron garnet single crystal are set to be the same and a magnetic field in which the total of the rotation angles of the paramagnetic garnet single crystal and the bismuth-substituted rare-earth iron garnet single crystal is 45° is applied. Further, the wavelength λ of the light entering the Faraday rotator is set to be 1,030 nm to 1,090 nm. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种法拉第旋转器,其可以通过使含有Tb的顺磁性石榴石单晶的厚度几乎不具有光学性,从而可以用于比近红外波长区域更短的波长区域的光源 作为主体稀土元素的吸收作为稀释剂,至达可以将法拉第旋光器用于顺磁性石榴石单晶的水平,同时抑制光吸收,并提供光隔离器。

      解决方案:用于短波长光的法拉第旋转器配置包括顺磁性石榴石单晶和铋取代稀土铁石榴石单晶。 顺磁石榴石单晶含有Tb作为主体稀土元素,相对于1,030nm至1,090nm的波长区域的光,具有超过99%的透光率。 顺磁石榴石单晶和铋取代的稀土铁石榴石单晶的法拉第旋转方向设定为相同的磁场,其中顺磁性石榴石单晶和铋 - 取代稀土铁石榴石单晶为45°。 此外,进入法拉第旋转器的光的波长λ设定为1,030nm至1,090nm。 版权所有(C)2008,JPO&INPIT

    • 10. 发明专利
    • Faraday rotator for short wavelength light and optical isolator provided with faraday rotator
    • FARADAY ROTATOR FOR SHORT WAVELENGTH LIGHT AND OPTICAL ISOLATOR PROFIDED WITH FARADAY ROTATOR
    • JP2008134595A
    • 2008-06-12
    • JP2007179354
    • 2007-07-09
    • Namiki Precision Jewel Co Ltd並木精密宝石株式会社
    • SHIRAKI KENICHIIKEGAI KAZUAKIFUKUHARA TAKASHI
    • G02B27/28G02B5/30G02B6/00
    • C30B19/02C30B29/28G02F1/0955H01F10/24
    • PROBLEM TO BE SOLVED: To suppress the temperature rise of a Faraday rotator and to secure deterioration prevention of the optical characteristic and reliability of an optical isolator by reducing light absorption of the Faraday rotator of the optical isolator to be used for the light source of a comparatively short wavelength region. SOLUTION: The Faraday rotator for shortwave light is composed of a garnet substrate and a bismuth-substituted rare earths iron garnet single crystal, and the lattice constant of the bismuth-substituted rare earths iron garnet single crystal is set to 12.56 Å to 12.58 Å. Further, the wavelength of the light made incident on the bismuth-substituted rare earths iron garnet single crystal is set to 1,030 nm to 1,090 nm, and the bismuth-substituted rare earths iron garnet single crystal is provided to one face or both faces of the garnet substrate. Further, a light-transmissive plate having a thermal conductivity which is four times or more of the thermal conductivity of the bismuth-substituted rare earths iron garnet single crystal is used instead of the garnet substrate to form the Faraday rotator for shortwave light. Further, the optical isolator is formed by using the Faraday rotator for shortwave light. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了抑制法拉第旋转器的温度上升,并且通过减少用于光的光隔离器的法拉第旋转器的光吸收来确保防止光隔离器的光学特性和可靠性的劣化 源波长较短的区域。 解决方案:用于短波光的法拉第旋转器由石榴石基板和铋取代稀土铁石榴石单晶组成,铋取代稀土铁石榴石单晶的晶格常数设定为12.56Å 12.58Å。 此外,入射到铋取代的稀土铁石榴石单晶上的光的波长被设定为1,030nm至1,090nm,并且将铋取代的稀土铁石榴石单晶设置在一个面或两面 石榴石基材。 此外,使用导热率为铋取代的稀土类铁石榴石单晶的热导率的四倍以上的透光性板代替石榴石基板,形成短波光法拉第转子。 此外,通过使用用于短波光的法拉第旋转器来形成光隔离器。 版权所有(C)2008,JPO&INPIT