Process for producing an optical coupler for polymer optical waveguides

    公开(公告)号:IE70746B1

    公开(公告)日:1996-12-30

    申请号:IE138691

    申请日:1991-04-25

    Applicant: HOECHST AG

    Abstract: Method for the production of an optical coupler for polymer light-guides by arranging the light-guides in the same direction and bundling them by means of a plastic shrink-fit sleeve. In this method, two to 10 polymer light-guides are arranged in the same direction and bundled and a plastic tube is slipped over the mixing zone. Subsequently, a piece of plastic shrink-fit sleeve is pushed over the plastic tube and the shrink-fit sleeve is heated to a temperature at which it contracts. The shrinking temperature of the shrink-fit sleeve is within the thermoelastic temperature range of the plastic tube. The light-guide bundles may be stretched during or after heating.

    4.
    发明专利
    未知

    公开(公告)号:ES2065527T3

    公开(公告)日:1995-02-16

    申请号:ES90906154

    申请日:1990-04-12

    Applicant: HOECHST AG

    Abstract: PCT No. PCT/EP90/00585 Sec. 371 Date Nov. 7, 1991 Sec. 102(e) Date Nov. 7, 1991 PCT Filed Apr. 13, 1990 PCT Pub. No. WO90/12043 PCT Pub. Date Oct. 18, 1990.A transparent thermoplastic molding compound consisting of 40 to 90% by weight of units derived from tetrafluoroethylene, and 60 to 10% by weight of units derived from compounds of formula I or II: CF2=CF-O-(CF2-CF(CF3)-O)m-(CF2)n-CF3(I) CF2=CF-O-(CF2-CF(CF3)-O)p-(CF2)q-COO-R(II) is particularly suitable for manufacturing the sheath of beam waveguides whose core has a higher transparency than polymethyl methacrylate.

    9.
    发明专利
    未知

    公开(公告)号:PT97464A

    公开(公告)日:1994-02-28

    申请号:PT9746491

    申请日:1991-04-24

    Applicant: HOECHST AG

    Abstract: Method for the production of an optical coupler for polymer light-guides by arranging the light-guides in the same direction and bundling them by means of a plastic shrink-fit sleeve. In this method, two to 10 polymer light-guides are arranged in the same direction and bundled and a plastic tube is slipped over the mixing zone. Subsequently, a piece of plastic shrink-fit sleeve is pushed over the plastic tube and the shrink-fit sleeve is heated to a temperature at which it contracts. The shrinking temperature of the shrink-fit sleeve is within the thermoelastic temperature range of the plastic tube. The light-guide bundles may be stretched during or after heating.

    TEMPERATURE SENSOR
    10.
    发明专利

    公开(公告)号:AU625154B2

    公开(公告)日:1992-07-02

    申请号:AU3900689

    申请日:1989-07-27

    Applicant: HOECHST AG

    Abstract: A novel temperature sensor consists of a protective cap in which a liquid crystal is located and in which at least one optical wave guide ends. The reflection of the light radiated into the liquid crystal is dependent on the temperture and can be used for temperature measurement. The accuracy is +/- 0.1 DEG C.

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