Optical fiber and method for producing the same
    1.
    发明授权
    Optical fiber and method for producing the same 失效
    光纤及其制造方法

    公开(公告)号:US4206968A

    公开(公告)日:1980-06-10

    申请号:US874420

    申请日:1978-02-02

    摘要: A method for producing an optical fiber comprises (i) the step of depositing a barrier layer on the inner wall surface of a glass tube by the CVD (chemical vapor deposition) process, said barrier layer being capable of preventing the diffusion of impurities and being made of high-silica glass which has a refractive index that is substantially equal to that of the glass tube and which contains at least one substance for lowering the refractive index of silica and at least one substance for raising the refractive index of silica, (ii) the step of depositing a glass film of desired refractive index on the barrier layer by the CVD process, (iii) the step of heating and collapsing the resultant glass tube into a composite rod or the so-called optical fiber preform, and (iv) the step of heating and drawing said optical fiber preform into the optical fiber, whereby the optical fiber which has the impurity diffusion-preventing layer between the core and the outside glass layer can be easily produced.

    摘要翻译: 制造光纤的方法包括:(i)通过CVD(化学气相沉积)工艺在玻璃管的内壁表面上沉积阻挡层的步骤,所述阻挡层能够防止杂质的扩散,并且 由高二氧化硅玻璃制成,其折射率基本上等于玻璃管的折射率,并且含有至少一种用于降低二氧化硅和至少一种用于提高二氧化硅的折射率的物质的物质(ii) )通过CVD工艺在阻挡层上沉积所需折射率的玻璃膜的步骤,(iii)将所得玻璃管加热和塌缩成复合棒或所谓的光纤预制件的步骤,(iv )将所述光纤预制件加热和拉制成光纤的步骤,由此在核心和外部玻璃层之间具有杂质扩散防止层的光纤可以容易地 引起

    Method of producing optical fiber
    2.
    发明授权
    Method of producing optical fiber 失效
    生产光纤的方法

    公开(公告)号:US4203743A

    公开(公告)日:1980-05-20

    申请号:US933672

    申请日:1978-08-14

    摘要: A method of producing an optical fiber comprising (i) the step of depositing a glass film of desired refractive index onto the inner wall surface of a quartz tube by the CVD (chemical vapor deposition) process, (ii) the step of heating the quartz tube to a high temperature while the gas of a compound which forms an oxide, enhancing the refractive index of the glass film, in an oxidizing atmosphere at the high temperature is kept flowing into the quartz tube along with an oxidizing gas, (iii) the step of heating and collapsing the quartz tube into a solid rod or the so-called preform, and (iv) the step of heating and drawing the optical fiber preform into the optical fiber.In the optical fiber produced by this method of manufacture, the lowering of the refractive index of the central part of the optical fiber is sharply reduced.At the step (iii), one end of the quartz tube is sealed and a gas is introduced into the tube from the other end so as to slightly raise the internal pressure of the tube, whereby a more favorable result is obtained.

    摘要翻译: 一种制造光纤的方法,包括(i)通过CVD(化学气相沉积)工艺在石英管的内壁表面上沉积所需折射率的玻璃膜的步骤,(ii)加热石英的步骤 在高温下在氧化气氛中形成氧化物的化合物的气体(在玻璃膜的氧化气氛中)的气体与氧化气体一起流入石英管中,(iii) 将石英管加热和塌缩成实心棒或所谓的预制件的步骤,以及(iv)将光纤预制件加热和拉制成光纤的步骤。 在通过该制造方法制造的光纤中,光纤的中心部分的折射率的降低急剧降低。 在步骤(iii)中,密封石英管的一端,从另一端引入气体,从而稍微升高管的内压,得到更好的结果。

    Method of producing optically transparent ceramics
    5.
    发明授权
    Method of producing optically transparent ceramics 失效
    光学透明陶瓷的制造方法

    公开(公告)号:US4019915A

    公开(公告)日:1977-04-26

    申请号:US516498

    申请日:1974-10-21

    摘要: There is provided a method of producing a ceramic represented by the general formula of ABO.sub.3, wherein A includes Pb and at least one element selected from the group consisting of Ba and Sr and B is either of Zr or both of Zr and Ti, by hot-pressing a complex oxide obtained by calcining the mixture of the oxides of A and B characterized by that a solid solution of the oxides of Ba and/or Sr and the oxide of the element constituting B, such as BaTiO.sub.3, SrZrO.sub.3 or (Ba, Sr)ZrO.sub.3, is used as the starting oxides of Ba and/or Sr, and that the starting material contains PbO in an amount of 3 - 20 mol% in excess of that calculated for the objective composition of the final product. Ceramics produced by the method of the present invention have ferroelectric properties and are optically transparent.

    摘要翻译: 提供了一种制备由通式ABO 3表示的陶瓷的方法,其中A包括Pb和选自Ba和Sr中的至少一种元素,B是Zr或Zr或Ti中的任一种,通过热 压制通过煅烧A和B的氧化物的混合物获得的复合氧化物,其特征在于Ba和/或Sr的氧化物和构成B的元素的氧化物如BaTiO 3,SrZrO 3或(Ba, Sr)ZrO 3用作Ba和/或Sr的起始氧化物,并且起始材料含有超过为最终产物的目标组成计算的量的3-20mol%的PbO。 通过本发明的方法生产的陶瓷具有铁电性能并且是光学透明的。

    Light deflecting system with rotating mirror
    7.
    发明授权
    Light deflecting system with rotating mirror 失效
    具有旋转镜的光偏转系统

    公开(公告)号:US4934781A

    公开(公告)日:1990-06-19

    申请号:US304554

    申请日:1989-02-01

    摘要: The rotating mirror light deflecting system employs a non-circular dynamic gas bearing providing dynamic pressure to radially support the shaft. The bearing is provided internally with a multiplicity of grooves or embankments whereby dynamic gas pressure is increased to enhance rigidity. The bearing radially moves as a whole with damping according to a movement of the shaft, thus permitting nondestructive movement of the shaft and absorption of the resonant energy of the shaft. The shaft and the bearing will not come in contact with each other, and oscillation energy of the shaft is absorbed or dissipated by an external viscous or hysteresis resistance of the bearing therefore resonance oscillation is attenuated on the instant it occurs. Since the resonance point is high due to bearing surface rigidity, whirling is hard to arise, however, if whirling does arise, then the bearing and the shaft move together to attenuate oscillation energy of the shaft, therefore oscillation and whirling is put down immediately.

    摘要翻译: 旋转镜光偏转系统使用提供动态压力的非圆形动态气体轴承来径向支撑轴。 轴承内部设置有多个槽或堤,从而增加动态气体压力以增强刚度。 根据轴的运动,轴承整体上具有阻尼的径向运动,从而允许轴的非破坏性运动和轴的共振能量的吸收。 轴和轴承不会彼此接触,并且轴的振动能量被轴承的外部粘性或磁滞阻力吸收或消散,因此谐振振荡在其发生的瞬间被衰减。 由于共振点由于轴承表面的刚度而高,因此很难产生旋转,但如果发生旋转,则轴承和轴一起移动,以减弱轴的振荡能量,因此立即放下振动和旋转。

    Process for producing wiring circuit board
    10.
    发明授权
    Process for producing wiring circuit board 失效
    制造布线电路板的工艺

    公开(公告)号:US4457950A

    公开(公告)日:1984-07-03

    申请号:US497578

    申请日:1983-05-24

    IPC分类号: H05K3/46 H05K3/10 B05D3/06

    摘要: A wiring circuit board with a fine wiring pattern free from disconnection and poor insulation is produced by forming an insulating layer consisting of at least two insulating substances having different dissociation energies for metalization, including metal elements, on a substrate and irradiating the insulating layer with an energizing beam by scanning, thereby forming a wiring pattern as desired.

    摘要翻译: 通过在基板上形成由至少两种具有不同的金属化解离能的分解能量的绝缘物质构成的绝缘层,在基板上形成绝缘层,并且在绝缘层上照射绝缘层, 通过扫描激励光束,从而根据需要形成布线图案。