Method of manufacturing piezoelectric materials
    1.
    发明授权
    Method of manufacturing piezoelectric materials 失效
    制造压电材料的方法

    公开(公告)号:US6156259A

    公开(公告)日:2000-12-05

    申请号:US540028

    申请日:1995-10-06

    摘要: In a method of manufacturing piezoelectric ceramics by molding pre-fired or calcined powders of ingredients of a piezoelectric ceramic material and sintering the powder mold at a high pressure, the powder mold is pre-sintered at an atmospheric pressure before sintering at high pressure (HIP). Preferably, after the sintering HIP step, a thermal treatment is performed at a temperature of from 500 to 1000.degree. C. under an oxidizing atmosphere. For a Pb(Zn.sub.1/3 Nb.sub.2/3)O.sub.3 --PbTiO.sub.3 based piezoelectric ceramic, the composition is preferably set to (Pb.sub.1-x Ba.sub.x)[(Zn.sub.1/3 Nb.sub.2/3).sub.1-y Ti.sub.y ]O.sub.3, where 0.001

    摘要翻译: 在通过模制压电陶瓷材料的预成型或煅烧粉末并在高压下烧结粉末模具来制造压电陶瓷的方法中,在高压烧结(HIP)之前将粉末模具在大气压下预烧结 )。 优选在烧结HIP工序后,在氧化气氛下,在500〜1000℃的温度下进行热处理。 对于Pb(Zn1 / 3Nb2 / 3)O3-PbTiO3基压电陶瓷,组合物优选设定为(Pb1-xBax)[(Zn1 / 3Nb2 / 3)1-yTiy] O3,其中0.001

    Optical waveguide structure, optical module and lens array

    公开(公告)号:US20060291777A1

    公开(公告)日:2006-12-28

    申请号:US11252715

    申请日:2005-10-19

    IPC分类号: G02B6/32

    摘要: Disclosed is an optical waveguide structure capable of keeping intervals between the structure and optical elements within a certain range. When arranging a surface light emitting element and a surface light receiving element on a positioning plate provided on a substrate, elastic layers are provided between the elements and the plate. When fitting and fixing first projections of the structure in holes of the plate, second projections formed in a predetermined dimension on the structure are brought into contact with the light emitting element and the light receiving element. Therefore, intervals between lenses, and the light emitting element as well as the light receiving element are controlled within a certain range according to the dimension of the second projections. Further, stress occurring due to contact is dispersed by the elastic layers so that breakage of the light emitting element and the light receiving element can be prevented.

    Optical waveguide structure, optical module and lens array
    7.
    发明授权
    Optical waveguide structure, optical module and lens array 有权
    光波导结构,光学模块和透镜阵列

    公开(公告)号:US07565047B2

    公开(公告)日:2009-07-21

    申请号:US11252715

    申请日:2005-10-19

    IPC分类号: G02B6/32 G02B6/26 G02B6/36

    摘要: Disclosed is an optical waveguide structure capable of keeping intervals between the structure and optical elements within a certain range. When arranging a surface light emitting element and a surface light receiving element on a positioning plate provided on a substrate, elastic layers are provided between the elements and the plate. When fitting and fixing first projections of the structure in holes of the plate, second projections formed in a predetermined dimension on the structure are brought into contact with the light emitting element and the light receiving element. Therefore, intervals between lenses, and the light emitting element as well as the light receiving element are controlled within a certain range according to the dimension of the second projections. Further, stress occurring due to contact is dispersed by the elastic layers so that breakage of the light emitting element and the light receiving element can be prevented.

    摘要翻译: 公开了能够将结构和光学元件之间的间隔保持在一定范围内的光波导结构。 当在设置在基板上的定位板上布置表面发光元件和表面光接收元件时,在元件和板之间设置有弹性层。 当将结构的第一突起装配并固定在板的孔中时,在结构上以预定尺寸形成的第二突起与发光元件和光接收元件接触。 因此,透镜和发光元件以及光接收元件之间的间隔根据第二突起的尺寸被控制在一定范围内。 此外,由于接触而产生的应力被弹性层分散,从而可以防止发光元件和光接收元件的破损。

    Optical deflector and optical switch

    公开(公告)号:US06947625B2

    公开(公告)日:2005-09-20

    申请号:US11034924

    申请日:2005-01-14

    CPC分类号: G02F1/295 G02F1/05 G02F1/313

    摘要: The optical deflector comprises: an optical waveguide 12 of a dielectric material having electrooptical effect; and a pair of electrodes 10, 14 opposed to each other across the optical waveguide, an electric field is applied between the opposed electrodes to change a refractive index of the dielectric material to thereby control a propagating direction of signal light propagating in the optical waveguide 12, wherein the dielectric material has a first refractive index in its initial state, has a second refractive index by application of an electric field of a first polarity, and retains as a third refractive index a refractive index obtained after the electric field has been removed. The dielectric material has the third refractive index has the first refractive index by the application of an electric field of a second polarity different from the first polarity and removal of the electric field.

    Optical deflector and optical switch
    9.
    发明申请
    Optical deflector and optical switch 有权
    光学偏转器和光开关

    公开(公告)号:US20050123228A1

    公开(公告)日:2005-06-09

    申请号:US11034924

    申请日:2005-01-14

    IPC分类号: G02F1/05 G02F1/295 G02F1/313

    CPC分类号: G02F1/295 G02F1/05 G02F1/313

    摘要: The optical deflector comprises: an optical waveguide 12 of a dielectric material having electrooptical effect; and a pair of electrodes 10, 14 opposed to each other across the optical waveguide, an electric field is applied between the opposed electrodes to change a refractive index of the dielectric material to thereby control a propagating direction of signal light propagating in the optical waveguide 12, wherein the dielectric material has a first refractive index in its initial state, has a second refractive index by application of an electric field of a first polarity, and retains as a third refractive index a refractive index obtained after the electric field has been removed. The dielectric material has the third refractive index has the first refractive index by the application of an electric field of a second polarity different from the first polarity and removal of the electric field.

    摘要翻译: 光偏转器包括:具有电光效应的电介质材料的光波导12; 以及在光波导上彼此相对的一对电极10,14,在相对电极之间施加电场以改变电介质材料的折射率,从而控制在光波导12中传播的信号光的传播方向 其中所述电介质材料在其初始状态下具有第一折射率,通过施加第一极性的电场具有第二折射率,并且将作为第三折射率的折射率保持为在去除电场之后获得的折射率。 电介质材料具有通过施加与第一极性不同的第二极性的电场和电场的去除而具有第一折射率的第一折射率。