Abstract: A ceramic metal halide lamp according to various embodiments can include a discharge vessel and an ionizable fill. The ionizable fill is sealed within the discharge vessel. The ionizable fill includes an oxygen dispenser to introduce oxygen in a form of a pellet into the discharge vessel in a controlled manner to facilitate a tungsten halogen wall cleaning cycle. The pellet comprises aluminum-oxide and molybdenum-oxide.

Abstract: A ceramic metal halide lamp according to various embodiments can include a discharge vessel and an ionizable fill. The ionizable fill is sealed within the discharge vessel. The ionizable fill includes an oxygen dispenser to introduce oxygen in a form of a pellet into the discharge vessel in a controlled manner to facilitate a tungsten halogen wall cleaning cycle. The pellet comprises aluminum-oxide and molybdenum-oxide.

Abstract: There is disclosed a method for forming a discharge tube for a low-pressure discharge lamp. In the method, an end of a section of the discharge tube is fastened with first clamping means, and a second end of the section in held in an oriented position. The section is heated to a softening temperature, and a bending moment is exerted on the section between the first end and the second end for achieving the desired radius or direction of curvature of the section. The holding of the second end of the section and the exertion of the bending moment on the section are effected at least partly with another re-solidified section of the discharge tube which is adjacent to the softened first section. An apparatus for performing the method is also disclosed. The apparatus comprises first and second clamping means for positioning the ends of a bending section of the discharge tube in an oriented position relative to each other, and for exerting a bending moment on the ends.

Abstract: This invention concerns a compact fluorescent lamp with a double helix shaped discharge tube in which the two strands of the helix are constituted by two helix shaped tube portions. These tube portions define a central axis of the discharge tube. The double helix formed by the discharge tube has a central section and a first end section. These sections are defined along the central axis, and the lamp base for receiving ends of the tube portions is disposed at the first end section. An inner diameter of the central section of the helix is larger than an inner diameter of the first end section. The invention further relates to a method and apparatus for manufacturing coiled shaped discharge tubes, in particular the above described discharge tube of the discharge lamp. A radially segmented molding core is used for manufacturing the discharge tube.

Abstract: There is disclosed a method for forming a discharge tube for a low-pressure discharge lamp. In the method, an end of a section of the discharge tube is fastened with first clamping means, and a second end of the section in held in an oriented position. The section is heated to a softening temperature, and a bending moment is exerted on the section between the first end and the second end for achieving the desired radius or direction of curvature of the section. The holding of the second end of the section and the exertion of the bending moment on the section are effected at least partly with another re-solidified section of the discharge tube which is adjacent to the softened first section. An apparatus for performing the method is also disclosed. The apparatus comprises first and second clamping means for positioning the ends of a bending section of the discharge tube in an oriented position relative to each other, and for exerting a bending moment on the ends.

Abstract: An incandescent lamp for use in a reflector is provided. The incandescent lamp comprises an envelope with a longitudinal axis, at least one filament and electrical lead-out wires. The lamp has a support portion receiving the envelop, a sleeved optical disc associated operatively with the support portion. The sleeved optical disc has a cut-out in a mantle thereof. A plastic base belongs to the incandescent lamp anchoring the sleeved optical disc and includes terminals. A leaf-spring is bent substantially to an O-shape and located in a space defined by the mantle of the sleeved optical disc. The leaf-spring includes a tongue protruding from one portion of the O-shape. The leaf-spring has two end portions forming a tab protruding from another portion of the O-shape. The leaf-spring is pressed to an inner portion of the mantle of the sleeved optical disc at the tab so that the tongue extends through the cut-out in the mantle of the sleeved optical disc.

Abstract: This invention concerns a compact fluorescent lamp with a double helix shaped discharge tube in which the two strands of the helix are constituted by two helix shaped tube portions. These tube portions define a central axis of the discharge tube. The double helix formed by the discharge tube has a central section and a first end section. These sections are defined along the central axis, and the lamp base for receiving ends of the tube portions is disposed at the first end section. An inner diameter of the central section of the helix is larger than an inner diameter of the first end section. The invention further relates to a method and apparatus for manufacturing coiled shaped discharge tubes, in particular the above described discharge tube of the discharge lamp. A radially segmented molding core is used for manufacturing the discharge tube.