General Electric Company

Tungsram Reszvenytarsasag

Budapesti Radiotechnikai Gyar

Istvan Csanyi

Agoston Boroczki

Csaba Horvath

Tamas Panyik

Bernard Patrick Bewlay

Bruce Alan Knudsen

Mohamed Rahmane

James Scott Vartuli

James Anthony Brewer

Jack M Strok

Gyorgy Szabo

Zoltan Losonczi

Attila Agod

Robert Baranyi

Balazs Nyiri

Guy Henry Turner

Christopher Omalley

Shanmugam Venkatachalam Ravi

Venkata Subbaiah Chennamshetty

Istvan Bolla

Sandor Stenczinger

Istvan Grimm

Laszla Feher

Janos Csiszar

An improved light collecting efficiency in a projector type automotive headlamp is achieved by including a curved mirror to re-direct light otherwise absorbed by a rear surface of the blocking cut-off shield in 'low beam' operating mode of the headlamp. When the shield is moved to a second non-blocking position, a mirror segment conforms to the curved surface of the substantially ellipsoidal reflector to maximize lumen output in 'high beam' operating mode of the headlamp. In addition, auxiliary mirror segments may be used to provide a more complete substantially ellipsoidal reflector configuration that maximizes the light collection efficiency. Preferably, the cap holder is purposefully offset in order to position the centerline of the bowed arc of the arc discharge light source in alignment with the optical axis of the optical system in order to maximize light collection efficiency.

Projector type headlamp of maximized light collecting efficiency

A High Intensity Discharge lamp and method of making same having an arc tube defining a discharge chamber with opposite ends of the tube each receiving an electrode extending into the discharge chamber and define an axial gap therebetween. A thermal shield extends from each opposite end of the arc tube and defines a radial gap with the tube. The thermal shields in some embodiments extend from end plugs in the arc tube; and, in another embodiment use formed, integrally with one arc tube sections and the tube sections joined.

Ceramic arc tube for a discharge lamp and method of making same

A method of forming a discharge lamp and the resultant discharge lamp include providing an arc tube having first and second ends offset from a central arcuate or curvilinear portion of the discharge chamber formed between the arc tube ends. Electrodes extend from the first and second ends and at least partially into the discharge chamber which is locally substantially rotationally symmetric, i.e., substantially circular cross-section over a length thereof. Preferably, the arc tube and discharge chamber have a curvilinear conformation where the first and second ends are located below the central portion of the arc tube and associated discharge chamber in horizontal orientation during operation. Terminal ends of the electrodes preferably follow a local axis of the curvilinear conformation. The wall thickness of the discharge chamber may be alternatively constant or non-constant along a longitudinal extent thereof.

Arc shaped discharge chamber for high intensity discharge automotive lamp

A high intensity discharge light source includes an arc tube having a longitudinal axis and discharge chamber formed therein. The light source includes first and second electrodes having inner terminal ends spaced from one another along the longitudinal axis. Each electrode extends at least partially into the discharge chamber. The discharge chamber is deformed so that its internal geometry is substantially rotationally asymmetric about its longitudinal axis, and is substantially mirror-symmetric relative to a plane spanned by the longitudinal axis and by another transverse axis that is perpendicular to the longitudinal axis and is vertical in a horizontal arc tube orientation, as well as substantially mirror-symmetric relative to a central plane perpendicular to the longitudinal axis. In a preferred embodiment of the disclosure the discharge lamp is of a single ended construction and the arc tube of the lamp is of double ended configuration, the discharge lamp having proximal and distal end electric lead wires to connect the arc tube to the lamp base, and the distal end electric lead wire is running below and parallel to the longitudinal discharge chamber axis in a horizontal lamp orientation, and its lateral direction coincides with the lateral direction of the central convex portion of the laterally complex concave-convex-concave deformed surface portion all along the longitudinal axis of the discharge chamber.

Discharge chamber for high intensity discharge lamp

A lamp having a ceramic arc envelope, an end structure coupled to the ceramic arc envelope and extending across an opening in the ceramic arc envelope, where the end structure comprises a passageway communicative with an interior chamber of the ceramic arc envelope is provided. The lamp further includes a molybdenum-rhenium electrode lead extending through and sealed with the passageway. The molybdenum-rhenium electrode lead includes a molybdenum-rhenium alloy. Furthermore, the lamp includes an arc electrode tip coupled to the electrode lead inside the interior chamber.

Ceramic lamps and methods of making same

A vapor discharge lamp comprised of an arc tube containing an ionizable medium, a first electrode electrically connected to a first in lead conductor, and a second electrode electrically connected to a second in lead conductor, said first and said second electrode pairs being positioned to create an arc discharge therebetween, an electron emissive material disposed on at least one of said electrodes, said electron emissive material being Ba.sub.4 Al.sub.2 O.sub.7.

Discharge lamp emission material

Magnetic information recording and/or reading head with increased

The invention refers to a projector lamp, which comprises a light source (3), a mirror (1) arranged in a space relationship to the light source (3) for projecting the light emitted by the light source (3) in a predetermined direction, the mirror (1) having a surface determined by a carrier element made of glass or plastics, and a layer system covering the surface of the mirror (1) and including layers characterized by refractive indices alternately at least 2.0 and at most 1.7. The improvement lies in applying layer system including at least four layers (4, 5, 6, 7) prepared for reflecting respective color components of the light emitted by the light source (3). The proposed projector lamp is capable of emitting color light without applying filters.

Projector lamp emitting color light

Growing community of inventors

Dunakeszi, Hungary

Istvan Csanyi