Abstract: Arc tube (10) has a bulbous body (12) with a hollow center portion (14) and opposite ends (16, 18). Each of these ends has a cylindrical terminal-receiving section (20, 22) extending therefrom. The hollow center portion (14) has an internal length A and an internal diameter B that provides an aspect ratio of less than 5 and an outer surface area to inner surface area ratio, measured in square units, of less than 1.5. Electrodes (24) and (26) are hermetically sealed in the terminal-receiving sections (20, 22). The lamp uses less than 7 mgs of mercury. The low pressure operation allows the use of the arc tube in lamps without a shroud and the low mercury allow the lamp to pass TCLP requirement and be conventionally landfilled.

Abstract: A two-piece reflector has a base member with a substantially planar surface including a substantially complete reflector and a partially complete reflector projecting therefrom and integral therewith. First and second spaced apart supports are associated with the partially complete reflector and project from the base member and provide pivot points therein. A substantially concave housing is adjustably fitted to cooperate with the partially complete reflector. The concave housing has a pair of spaced apart, projecting, axially aligned nubbins, a first of these nubbins being rotationally fixed to the pivot point in the first support and a second of the nubbins being rotationally fixed to the pivot point in said second support. This allows rotational adjustment of the housing about the axis defined between the pivot points. Means are provided attached to the concave housing for fixing the same in a desired position.

Abstract: The neck of a typical PAR lamp tends to focus the light issued in the neck or heel of the lamp back onto the lamp seals. The focused lost light then tends to overheat the seal and shorten lamp life. A practical solution is to intercept this lost light with a light absorbing layer. The light is then converted to heat in the layer. The heat is then re-radiated in an unfocused fashion with only a small portion of it redirected to the seal area. The interception layer may be formed as a black top coating on the neck interior or the neck exterior if the reflector is otherwise light transmissive. Alternatively, the neck may be formed from a translucent or opaque material that then converts the light into heat in the body of the reflector wall. The neck is then specifically not metallized so as to reflect light from the internal neck surface back to the lamp seal.

Abstract: A replaceable vehicle lamp assemble may be made by placing LEDs directly on a heat conducting support that is thermally connected to an exterior heat radiating element. In one embodiment, the lamp structure is substantially snap fitted together. The LEDs are mounted on a heat conductive post and flange. A coupler encircles the post and couples through the flange to a base thereby trapping the flange in place. The coupler also includes latching features to mount in a socket hole of a reflector assembly. The heat conductive flange is then exposed on the exterior to ambient air, thereby providing cooling for the LEDs.

Abstract: A support device is provided for use with an electric lamp having a sealed outer envelope that encloses an environment, and a lamp capsule and end-of-life device positioned within such environment. The support device serves to support the lamp capsule and the end-of-life device within the outer envelope. The end-of-life device is electrically connected in series with the lamp circuit through the support device.

Abstract: A mount assembly for a lamp has a glass stem (122) having a first portion (124) that is tubular and has an outside diameter D2 and a second portion (118) formed as a pinch seal. A blow-hole (125) is formed in the tubular first portion and is connected to an exhaust tubulation (126). A substantially C-shaped clip (100) is mounted upon the first portion (124). The C-shaped clip (10) has an inside diameter D that is smaller than the outside diameter D2 whereby the clip (100) frictionally engages the first portion (24). A pair of substantially oppositely located cutouts (102, 104) is formed in the clip (10), each providing an extending flap (106, 108) projecting away from the clip (100). This assembly accurately supports the structure and prevents rotation of the mount assembly. An upstanding tab (110) is located substantially midway between the extending flaps, i.e., opposite the open part of the clip, and angled inwardly toward the center of the C-shaped clip (100).

Abstract: The invention relates to a high-pressure discharge lamp for motor vehicle headlights which is provided with an annular flange (127) for mounting the high-pressure discharge lamp in the lamp holder of the motor vehicle headlight. According to the invention, the annular flange (127) is fixed on the base (125) by means of a snap or latching connection and is adapted to the lamp holder of motor vehicle headlights for halogen incandescent lamps. As a result, the high-pressure discharge lamp according to the invention can be inserted in motor vehicle headlights for halogen incandescent lamps.

Abstract: A lamp assembly that comprises a hollow arc discharge light source having a center arc chamber containing an arc generating and sustaining medium and first and second ends with an electrode receiving capillary extending from each end and arrayed along a longitudinal axis. The ends are cylindrical in cross-section. An electrode structure is positioned in each of the capillaries and each of these electrode structures comprises a proximal electrode end projecting into the interior of the center arc chamber, a distal end projecting exteriorly of said capillary and an intermediate section therebetween. A first area of the intermediate section is sealed to the capillary in an hermetic manner and a second area of the intermediate section is exposed to the medium. A tubular shroud surrounds the light source and is coaxial with the longitudinal axis. The shroud has two ends. A pair of spring clips, one at each end of said shroud, mount the light source within the shroud.

Abstract: The invention relates to a method for producing an electric lamp, in particular the application of an optical shield (5) to a cylindrical part of the lamp vessel (2). According to the invention, the optical shield (5) is applied to the lamp vessel (2) with the aid of at least two prefabricated opaque wax films (5a, 5b) which are provided with a colored layer and are joined in such a way that the width of the transparent window can be set independently of tolerances of the diameter of the lamp vessel (2). The wax of the films (5a, 5b) is vaporized by a heat treatment such that only the heat resistant colored layer remains on the lamp vessel (2).

Abstract: A spring clip (10) has a base (12) in a first plane and has an aperture (14) centrally located therein. U-shaped projections (16) and (18) are provided on the base (12) and are formed from first and second upstanding walls (200 and (22) and third and fourth walls (24) and (26), at each end of the base (12). A first lip (28) extends orthogonally between the first wall and second wall in a second plane and a second lip (29) extends orthogonally between the third wall and fourth wall, also in the second plane. The second plane is substantially parallel to the first plane but spaced therefrom. Extensions (30) and (32) are formed with the first wall and the third wall and project away from them. The extension are in substantially the same plane as base (12) and at least one flag (34) can be formed with at least one of the extensions. The flags (34) project away from the extensions (32) in a plane transverse to the first and second planes and allow the clips to be attached to a frame.

Abstract: A lamp and optical lens assembly is provided having a carrier with one or more lamp assemblies mounted thereto relative to a carrier registration. An optical lens having at least one focal point and at least one guide portion relative to the focal point is also provided. The carrier is coupled to the optical lens with the registration aligned with the location guide portion so as to accurately position the lamp assembly relative to the focal point. A lamp apparatus is provided by enclosing the lamp and optical lens assembly within a housing and cover lens combination. A lamp housing assembly is also provided.

Abstract: A reflector lamp having a reflector which has a reflector neck and defines a reflector axis, and an electric lamp fixed in the reflector neck by a metallic holder, in which a section of the metallic holder is arranged, secured against rotations about the axis, in a cutout in the reflector neck and projects from the neck through this cutout, a shoulder in the region of the reflector neck a is designed as a depth stop for the metallic holder in the direction of the reflector axis, the lamp has a metallic base shell is provided with a thread and for which the outer wall of the reflector neck forms a stop surface, and there is a screwed connection between the base shell and the part, projecting from the reflector neck, of the section, arranged in the cutout of the reflector neck, of the metallic holder.

Abstract: An efficient and safe lamp with a tungsten halogen capsule may be formed by using a two stage pyrophoric fuse as part of the electrical path to the capsule. The thin walled lamp with tungsten halogen capsule and two stage pyrophoric fuse yields a more efficient, less expensive and yet still safe tungsten halogen lamp. The thin walled lamp with tungsten halogen capsule and pyrophoric fuse provides a safe, thin walled outer envelope tungsten halogen lamp, provide a lamp with an oxygen sensitive fuse operable in low wattage lamps, provides a method manufacturing a pyrophoric fuse sensitive to moderate temperatures, provides an inexpensive and practical, low wattage, thin walled tungsten halogen lamp with a pyrophoric fuse.

Abstract: A high intensity discharge lamp (10) has an outer envelope (12) having a cup-shaped top (14), a hollow center section (16) and a bottom (18) all aligned along a longitudinal axis (20), the bottom (18) including a flare (22) having a pinch seal (24) with in-leads (26, 28) sealed therein. A mount structure (30) is positioned within the envelope, the mount structure including a frame (32) comprising a spaced-apart pair of side frames (34, 36) extending substantially the length of the envelope (12) and parallel to the longitudinal axis. The side frames (34,36) have middle portions (35,37) carrying an arc tube (38) and a surrounding shield (40), and the side frames further have an upper portion that frictionally engages the inside surface of the cup-shaped top (14), the upper portion comprising two ends (42, 44) extending in a direction normal to the longitudinal axis and having a space (50) therebetween.

Abstract: The invention relates to a double-filament halogen incandescent lamp for a motor vehicle headlamp. In order to reduce the light shading effects caused by the filament holder, at least one of the power supply wires (8) is provided with a section (8a) that projects out of the common plane of the power supply wires (7, 8, 9) and is guided past the main filament (5), this section (8a) being shaped such that light beams that are emitted by the main filament (5) perpendicular to its filament axis are not obstructed by the power supply wire (8).

Abstract: A ceramic cup may be fitted in the neck of a reflector region to provide good reflection or blockage of the light incident on the reflector neck. Light is then prevented light from incorrectly exiting through the lamp neck or from heating the neck region. The ceramic cup can be cheaper than coatings or other shields. The ceramic cup shield can be more durable and electrically more compatible with the lead structure extending through the neck region. The cup shield can also help align and properly position the light source.

Abstract: A sealing electrode for discharge lamp having electrically conductive cup, and an emitter pellet is disclosed. The cup seals a passage into the discharge lamp, and additionally supports the electrode pellet or tip for the discharge. The design enables the emitter, electrode and seal structure to be made separately off line, while also enabling the emitter to be protected from contaminants during subsequent assembly.

Abstract: A sealing electrode for discharge lamp having electrically conductive cup, and an emitter pellet is disclosed. The cup seals a passage into the discharge lamp, and additionally supports the electrode pellet or tip for the discharge. The design enables the emitter, electrode and seal structure to be made separately off line, while also enabling the emitter to be protected from contaminants during subsequent assembly.