Fabrication of high-silica glass article
    43.
    发明公开
    Fabrication of high-silica glass article 失效
    Herstellung eines glasigen Gegenstandes mit einem hohen Gehalt一个Kieselsäuren。

    公开(公告)号:EP0281282A1

    公开(公告)日:1988-09-07

    申请号:EP88301390.6

    申请日:1988-02-18

    Applicant: AT&T Corp.

    Abstract: Incorporation of fluorine into a porous silica body, such as an unsintered body produced by a sol-gel method, by VAD or OVPO, reduces or eliminates bubble or pore formation upon re-heating of the glass formed by sintering of the porous material. Effective fluorine concentrations are between 0.01 and 5% by weight. The invention can be used advantageously in producing preforms and optical fiber.

    Abstract translation: 通过VAD或OVPO将氟引入多孔二氧化硅体,例如通过溶胶 - 凝胶法制造的未烧结体,减少或消除了通过多孔材料的烧结形成的玻璃的再加热时的气泡或孔形成。 有效氟浓度为0.01〜5重量%。 本发明可有利地用于生产预成型件和光纤。

    Optical element
    46.
    发明专利
    Optical element 审中-公开

    公开(公告)号:JP2004021089A

    公开(公告)日:2004-01-22

    申请号:JP2002178470

    申请日:2002-06-19

    Abstract: PROBLEM TO BE SOLVED: To provide an optical element having glass not containing alkali metal oxides as essential components and ensuring a small change in light path due to temperature changes as a component. SOLUTION: The optical element is used for light of 450-1,700 nm wavelength and has glass through which the light should propagate as a component or comprises glass through which the light should propagate, wherein dS/dT(=dn/dT+nα) expressed using the refractive index n of the glass to light of 1,550 nm wavelength, the rate dn/dT of temperature change of n at 25°C and the coefficient α of linear expansion at 25°C is ≤8.9×10 -6 /°C and the glass contains ≤1 mass% alkali metal oxides. COPYRIGHT: (C)2004,JPO

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