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    Process for producing silica glass plate having controlled refractive index distribution
    14.
    发明授权
    Process for producing silica glass plate having controlled refractive index distribution 失效
    具有受控折射率分布的石英玻璃板的制造方法

    公开(公告)号：US5160358A

    公开(公告)日：1992-11-03

    申请号：US692457

    申请日：1991-04-17

    申请人： Osamu Kondo ,  Masukazu Hirata ,  Mitsuzo Arii

    发明人： Osamu Kondo ,  Masukazu Hirata ,  Mitsuzo Arii

    IPC分类号： C03B19/12 ,  C03B37/016 ,  C03C23/00

    CPC分类号： C03B37/016 ,  C03B19/12 ,  C03C23/0095 ,  C03B2201/10 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/40 ,  C03B2201/42 ,  C03B2201/54 ,  C03B2203/22 ,  Y02P40/57 ,  Y10S65/901

    摘要： A process for easily producing a silica glass plate having an internal refractive index distribution suitable for a planar optical waveguide involves carrying out the following steps.(a) A porous silica gel plate produced by a sol-gel method is kept in a reactor, the pressure of which is reduced to a substantially vacuum state.(b) Germanium tetrachloride gas is introduced into the reactor at a partial pressure appropriate to establish an absorption equilibrium between a desired concentration of germanium tetrachloride in said porous silica gel plate and a partial pressure of germanium tetrachloride introduced.(c) The partial pressure of germanium tetrachloride in step (b) is reduced so as to desorb germanium tetrachloride from the surface of the porous silica gel plate.(d) The porous silica gel plate having a described concentration distribution is brought into contact with water within or outside the reactor so as to fix the distribution.(e) The porous silica gel plate is calcined at a temperature of not less than 900.degree. C. to render it nonporous.

    摘要翻译： 用于容易地生产具有适合于平面光波导的内部折射率分布的石英玻璃板的方法包括进行以下步骤。 （a）将通过溶胶 - 凝胶法制备的多孔硅胶板保持在反应器中，其压力降低至基本上真空状态。 （b）将四氯化锗气体以适于建立所述多孔硅胶板中所需浓度的四氯化锗与引入的四氯化锗的分压之间的吸收平衡的分压引入反应器。 （c）步骤（b）中的四氯化锗的分压降低，从而从多孔硅胶板的表面解吸四氯化锗。 （d）具有所述浓度分布的多孔硅胶板与反应器内部或外部的水接触以固定分布。 （e）多孔硅胶板在不低于900℃的温度下煅烧，使其无孔。

    Electronic apparatus
    15.
    发明授权
    Electronic apparatus 失效
    电子仪器

    公开(公告)号：US07110249B2

    公开(公告)日：2006-09-19

    申请号：US10946364

    申请日：2004-09-22

    申请人： Masato Nakatani ,  Osamu Kondo

    发明人： Masato Nakatani ,  Osamu Kondo

    IPC分类号： H05K5/00 ,  H04R9/06 ,  H04R25/00

    CPC分类号： G06F1/1688 ,  G06F1/1616 ,  G06F1/162

    摘要： An electronic apparatus has a first housing, a second housing, and speakers. The first housing and second housing are so coupled as to be movable between a first position away from each other and a second position in which one of them is laid on the other. The speaker is provided in the first housing. A first opening is situated at a place covered over the second housing when it is in the second position and corresponding to the speaker. A second opening is located on the second housing at a place corresponding to the first opening when the second housing is in the second position. A third opening is provided in the second housing situated on the outer side at the second position and communicates with the second opening.

    摘要翻译： 电子设备具有第一壳体，第二壳体和扬声器。 第一壳体和第二壳体被联接成能够在彼此远离的第一位置和第二位置之间移动。 扬声器设置在第一外壳中。 当第一开口处于第二位置并且对应于扬声器时，第一开口位于覆盖在第二壳体上的位置。 当第二壳体处于第二位置时，第二开口位于与第一开口对应的位置处的第二壳体上。 第三开口设置在位于第二位置的外侧的第二壳体中，并与第二开口连通。