Opaque silica glass article having transparent portion and process for producing same
    102.
    发明公开
    Opaque silica glass article having transparent portion and process for producing same 有权
    不透明石英玻璃制品具有透明区域和过程及其制备

    公开(公告)号:EP0909743A1

    公开(公告)日:1999-04-21

    申请号:EP98119541.5

    申请日:1998-10-15

    IPC分类号: C03C3/06 C03C11/00

    摘要: An opaque silica glass article comprising a transparent portion and an opaque portion, wherein the opaque portion has an apparent density of 1.70 - 2.15 g/cm 3 and contains 5 x 10 4 - 5 x 10 6 bubbles per cm 3 , said bubbles having an average diameter of 10 - 100 µm; and the transparent portion has an apparent density of 2.19 - 2.21 g/cm 3 and the amount of bubbles having a diameter of at least 100 µm in the transparent portion is not more than 1 x 10 3 per cm 3 .
    The opaque silica glass article is made by a process wherein a mold is charged with a raw material for forming the opaque portion, which is a mixture comprising a silica powder with a small amount of a silicon nitride powder, and a raw material for forming the transparent portion so that the two raw materials are located in the positions corresponding to the opaque and the transparent portions, respectively, of the silica glass article to be produced; and the raw materials are heated in vacuo to be thereby vitrified.

    摘要翻译: 不透明石英玻璃制品,其包括和不透明部分的透明部分,worin不透明部分具有在1.70表观密度 - 2.15克/厘米<3>和含有5×10 <4> - 每平方厘米5×10 <6>气泡 <3>,。所述气泡具有在10至100微米平均直径; 和透光部分具有至2:21的2:19表观密度克/厘米<3>和具有透明部分的直径的至少100微米的气泡的量不大于1×10 <3>每厘米多个<3 >。 不透明石英玻璃制品是由worin的模具中装入的原料用于形成遮光部的方法,所有这些是包括具有氮化硅粉末的少量的二氧化硅粉末的混合物,和一个原料用于形成由 透明部分,以便做了两种原料都位于位置分别对应于不透明和透明部分,该石英玻璃制品要生产的; 和原材料是在真空中加热从而被玻璃化。

    EP0803469A4 -
    107.
    发明公开
    EP0803469A4 - 失效
    EP0803469A4 - Google专利

    公开(公告)号:EP0803469A4

    公开(公告)日:1997-11-19

    申请号:EP96900441

    申请日:1996-01-12

    摘要: Synthetic quartz glass powder obtained by the sol-gel method and containing at most five black particles per 50g of the powder. A high-quality quartz glass molding is produced by melt molding the powder while extremely suppressing foaming.

    摘要翻译: 通过溶胶 - 凝胶法获得的合成石英玻璃粉末,每50g粉末含有至多五个黑色颗粒。 高质量的石英玻璃成型体是通过熔融成型粉末来生产的,同时极其抑制起泡。

    MACRO-GRADIENT OPTICAL DENSITY TRANSMISSIVE LIGHT CONCENTRATORS, LENSES AND COMPOUND LENSES OF LARGE GEOMETRY, AND FABRICATION THEREOF
    110.
    发明公开
    MACRO-GRADIENT OPTICAL DENSITY TRANSMISSIVE LIGHT CONCENTRATORS, LENSES AND COMPOUND LENSES OF LARGE GEOMETRY, AND FABRICATION THEREOF 失效
    冷凝器,镜头并与宏观层次密度,及相关方法传输同声问镜片历史意义十分重大。

    公开(公告)号:EP0354927A1

    公开(公告)日:1990-02-21

    申请号:EP88907902.0

    申请日:1988-08-09

    IPC分类号: G02B6 C03B19 F24J2 G02B3 G02B19

    摘要: Gradient optical density transmissive light directing devices (20, 24, 26, 28, 30) and fabrication thereof are disclosed herein. Examples of such devices include concentrators, lenses and compound lenses. The present invention teaches a process for the fabrication of glass light transmitting devices having a chosen gradient in index of refraction either bidirectionally (radially and longitudinally relative to an optical axis) or in three dimensions. The present invention further describes the design of several interesting optical devices by particular choices of the gradient in the index of refraction thereof. Such articles have numerous uses in the optics, optical fiber and solar technology industries for the purposes of designing compound lens systems using a single, integral lens, coupling light into fibers and for concentrating and directing light from a source having a significant angular variation to energy collecting and/or conversion devices such as a photovoltaic cell, to name but a few applications.