Abstract: Low-pressure gas discharge lamp provided with a discharge vessel (1) enclosing a discharge space provided with a gas filling in a gastight manner, the discharge vessel (1) having tubular end portions each with a capacitive coupling element (2) made from an electrically insulating material for producing and maintaining a discharge in the discharge space. The lamp is structurally confined to prevent the occurrence of (hair) cracks in a wall of the discharge vessel as a result of piezoelectric properties of the electrically insulating material.

Abstract: Low-pressure gas discharge lamp provided with a discharge vessel (1) enclosing a discharge space provided with a gas filling in a gastight manner, said discharge vessel (1) having tubular end portions each with a capacitive coupling element (2) made from an electrically insulating material for producing and maintaining a discharge in the discharge space, characterized in that the lamp is provided with means for preventing the occurrence of (hair) cracks in a wall of the discharge vessel as a result of piezoelectric properties of said electrically insulating material.

Abstract: The invention relates to a method of manufacturing a gas discharge lamp and to such a gas discharge lamp 100. A known gas discharge lamp 100 comprises a hollow glass body 120 filled with a gas, which gas is excited into generating light through the supply of energy, and at least one ceramic electrode 140a, 140b fastened to the hollow glass body for the capacitive coupling of energy into the gas inside the hollow glass body 120. It is an object of the invention to simplify the manufacture of the gas discharge lamp 100. This is achieved according to the invention in that the glass material from which the hollow glass body 120 is formed and the ceramic material 140a, 140b from which the ceramic electrode is formed are chosen such that their two thermal expansion coefficients correspond at least by approximation, and in that the glass tube is fastened to the ceramic electrode through direct fusion.

Abstract: A flash array provided with a number of high voltage combustion flash lamps which are ignited by means of a piezo element. The flashing of two lamps at the same time is prevented by means of melting strips.According to the invention the igniting pulse for a second lamp of the device is passed on via a capacitive circuit element which is formed by the flashed first lamp or a separate capacitor. By using such a capacitor circuit element instead of an ohmic resistance undesired loss of heat is avoided.

Abstract: The invention relates to a method of manufacturing a percussion flashlamp in which a metal tube which is closed at one end is sealed to a piece of cylindrical tube glass, during which sealing operation the metal tube is supported by a pin which projects through the tube glass into the metal tube and which holds the closed end of the metal tube above the tube glass.

Abstract: The invention relates to a percussion flash-lamp which comprises a lamp envelope and a metal tube sealed thereto, in which tube an anvil and an ignition mass are provided. At its end remote from the lamp envelope the metal tube comprises a cylindrical narrowed portion in which the anvil is fixed so as to extend co-axially in the tube. The anvil is shaped as a straight cylindrical wire.