Heimann Gmbh

Wolfgang Welsch

Werner Rech

Josef Zimlich

Eugen Achter

A process for producing a gas discharge lamp particularly useful as a flash tube comprising a glass tube, which contains an inert gas with a preformed sintered glass body sealed into each end and containing at least one electrical connector pin of an electrode extending therethrough in a sealed fashion, characterized by providing a glass tube, providing the sintered glass preforms for each end of the glass tube, sealing each of the glass bodies in the respective ends of the glass tube, and filling the glass tube with the desired amount of inert gas prior to completing the formation of all the seals between the glass tube and the glass bodies. The process preferably is accomplished in an apparatus having a chamber which can be evacuated and which can contain a controlled atmosphere at a desired pressure. The process may either form the seals simultaneously while in the chamber which contains the desired pressure of inert gas, or form the seal formed at one end of the glass tube and then form the seal at the other end.

Process for the production of gas discharge lamps

A flash tube is disclosed having metallic end caps attached either in the shape of a plate or a cup upon ends of a glass or quartz tube. They are attached by adhesive, or are soldered on by soldering glass. One of the end caps internally supports a sintered body as a cathode. Soldering temperatures and a distance of the sintered body from the soldered joint when soldering glass is used are chosen such that no activating metal of the sintered body evaporates, since this reduces the work function of the electrons at the ends of the tube.

Flash tube

A gas discharge lamp having a glass tube with preformed sintered glass bodies sealed to each end with each body carrying at least one connector pin for an electrode so that at least one electrode is disposed and supported adjacent each end of the discharge tube. The glass bodies may be sealed in the discharge tube either by glass solder, an organic adhesive or a combination of both.

Gas discharge lamp

A gas discharge lamp, particularly useful as a flash tube, has a glass tube and electrode feed-through conductors which are connected with the glass tube in gas-tight relationship via glass members and glass solder. The glass members consist of prefabricated shaped parts having a geometry which absorbs thermal stresses between the glass members and the glass tube.

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Wiesbaden, Germany

Wolfgang Welsch