1.
    发明专利
    未知

    公开(公告)号:FR2335797A1

    公开(公告)日:1977-07-15

    申请号:FR7637714

    申请日:1976-12-15

    Applicant: SHARP KK

    Abstract: An oscillator utilizing a negative resistance light emitting semiconductor diode is connected in series with voltage booster means which in turn provides a high voltage to electrodes of a gas igniter. Discharge of the gas between the electrodes occurs with the aid of the high voltage derived from the voltage booster means to thereby effect an ignition of the gas. Light emission from the diode in the absence of gas ignition is indicative of a deficiency in the supply of gas, while the absence of light emission in the absence of gas ignition is indicative of a deficiency in the operation of the oscillator circuit.

    OPTICAL COUPLING ELEMENT
    2.
    发明专利

    公开(公告)号:JPS63274188A

    公开(公告)日:1988-11-11

    申请号:JP11027487

    申请日:1987-05-06

    Applicant: SHARP KK

    Abstract: PURPOSE:To enable manufacturing the following two kinds of optical coupling elements by using the same production facilities since a case can commonly be used by a photo coupler and a reflective type photo interrupter by providing a partition groove between the positions where a light emitting element and a light receiving element are installed and by fitting a light transmitting or light intercepting partition plate in the partition groove. CONSTITUTION:A partition groove 15 is provided between a light emitting element 4 and a light receiving element 5 in the case 14 of an optical coupling element. In the case of a photocoupler, a light transmitting partition plate 16 high enough to the extent to be entered in a light intercepting resin 9 which seals a top surface is fit in the partition groove 15 and stuck with insulating adhesives 17. On the other hand, in the case of a reflective type photo interrupter, a light intercepting partition plate 18 high enough to the top surface of the case 14 is fit and stuck with the insulating adhesives. In such a structure, the case 14 is commonly used by the photocoupler and the reflective type photo interrupter.

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