Abstract: A method of converting a line voltage to an RMS load voltage in a lamp includes performing phase-control clipping of a load voltage with a phase-control clipping circuit. Conduction in the phase-control clipping circuit is triggered independently of a line voltage magnitude during time periods spanning polarity changes of the load voltage that are separated by intervals when conduction is not triggered using a time-based pulse source so as to define a conduction angle of the phase-control clipping circuit.
Type:
Application
Filed:
April 1, 2005
Publication date:
July 28, 2005
Applicant:
OSRAM SYLVANIA INC.
Inventors:
George Kendrick, Ernest Weyhrauch, Matthew Ballenger
Abstract: A lamp contains a lamp voltage conversion circuit which includes a forward/reverse hybrid phase-control clipping circuit that clips a load voltage and provides an RMS load voltage to the lamp. The phase-control clipping circuit has a time-based pulse source that triggers conduction of the phase-control clipping circuit independently of line voltage magnitude during time periods spanning polarity changes of the load voltage that are separated by intervals when conduction is not triggered.
Type:
Application
Filed:
April 1, 2005
Publication date:
July 28, 2005
Applicant:
OSRAM SYLVANIA INC.
Inventors:
George Kendrick, Ernest Weyhrauch, Matthew Ballenger
Abstract: A substantially annular electrical contact (12) has an inside dimension (14) and an outside dimension (16). A preferred material for the contact (12) is phosphorus-bronze. The inside dimension (14) is provided with a plurality of contact beams (18). The outside dimension (16) is provided with a plurality of retention beams (20). The contact beams and the retention beams are spaced alternately from one another. A wire-receiving trough (21) is provided between two of the retention beams and extends away from the annulus. A substantially cup-shaped electrically insulating insert (22) (see FIG. 3) is also provided and comprises an interior wall (26) and an exterior wall (28). A preferred material for the insert is polypropylene. The interior wall (26) is provided with pockets (30) for receiving the contact beams (18) and the exterior wall (28) is provided with pockets (32) for receiving the retention beams (20).
Type:
Grant
Filed:
April 13, 2004
Date of Patent:
July 26, 2005
Assignee:
Osram Sylvania Inc.
Inventors:
Michael J. Swantner, Douglas G. Seymour
Abstract: An optoelectronic component has a carrier body as well as an optoelectronic transmitter for emitting a coherent light beam and an optoelectronic receiver, which are applied on the carrier body. An optical device splits the light beam emitted by the optoelectronic transmitter into a reference beam and a measurement beam. The measurement beam reflected at the measurement object is received and superposed with the reference beam to form an interference beam. The interference beam is directed onto the optoelectronic receiver. The optoelectronic component furthermore contains a spacer, which is applied on the carrier body and on which the optical device is applied. The optical device is disposed parallel to and at a distance from the carrier body defined by the spacer.
Abstract: A high output halogen lamp having five filament segments with four segments in a circular arrangement surrounding a fifth segment positioned directly in the center of the lamp axis which contributes to the high output and a more uniform light distribution.
Type:
Application
Filed:
February 24, 2005
Publication date:
July 21, 2005
Applicant:
OSRAM SYLVANIA INC.
Inventors:
Alexander Kasak, Victor Cabrales, Heinz Sell, Michael Willacker
Abstract: A process for preparing particles of zinc sulfide-based electroluminescent phosphor having a moisture resistant coating thereon which comprises the steps of selecting a reaction vessel having a given height and a porous disc at the bottom thereof; charging the reaction vessel with phosphor particles and fluidizing the particles by introducing an inert gas into the vessel through the porous disc; heating the reaction vessel to a reaction temperature; introducing a coating precursor into the reaction vessel at a position adjacent the bottom of the vessel but above the disc; introducing a co-reactant into the reaction vessel at a position substantially mid-way of the given height; and maintaining the inert gas flow, the precursor flow and the co-reactant flow for a time sufficient for a reaction to occur and coat the phosphor with the moisture resistant coating. Apparatus for carrying out the process is also disclosed.
Abstract: A lamp includes a lamp voltage conversion circuit which converts a line voltage to an RMS load voltage by clipping or modulating a load voltage. The voltage conversion circuit includes a time-based signal source that triggers conduction in the voltage conversion circuit independently of line voltage magnitude. A transistor switch whose gate receives signals from the time-based signal source triggers the voltage conversion circuit. A microcontroller increases one of a rate and a duration of the signals from the time-based signal source sent to the gate of the transistor switch when starting the lamp.
Type:
Application
Filed:
April 1, 2005
Publication date:
July 14, 2005
Applicant:
OSRAM SYLVANIA INC.
Inventors:
Ernest Weyhrauch, George Kendrick, Matthew Ballenger
Abstract: A method of operating a power controller that converts a line voltage to an RMS load voltage includes a soft start in which a conduction angle of a phase-control clipping circuit is gradually increased to a steady state value that defines the RMS load voltage. The controller has a circuit with a time-based signal source that triggers conduction independently of line voltage magnitude and a transistor switch whose gate receives signals from the time-based signal source to trigger the circuit. When starting the power controller, a microcontroller increases the conduction angle of the phase-control clipping circuit in plural steps to provide the soft start.
Type:
Application
Filed:
April 1, 2005
Publication date:
July 14, 2005
Applicant:
OSRAM SYLVANIA INC.
Inventors:
Ernest Weyhrauch, George Kendrick, Matthew Ballenger
Abstract: A luminescence diode chip with a semiconductor body having an epitaxially grown semiconductor layer sequence with an active zone and a radiation coupling-out area, the active zone emitting an electromagnetic radiation during operation of the luminescence diode chip, which electromagnetic radiation, at least in part, is coupled out via the radiation coupling-out area. The luminescence diode chip has a radiation-transmissive covering body that is arranged downstream of the radiation coupling-out area in an emission direction of the luminescence diode chip and has a first main surface facing the radiation coupling-out area, a second main surface remote from the radiation coupling-out area, and also side faces connecting the first and second main areas.
Type:
Application
Filed:
November 1, 2004
Publication date:
July 14, 2005
Applicant:
Osram Opto Semiconductors GmbH
Inventors:
Stefan Grotsch, Herbert Brunner, Hubert Ott
Abstract: A method of operating a power controller that converts a line voltage to an RMS load voltage includes a soft start in which a duty cycle of a pulse width modulation circuit is gradually increased to a steady state value that defines the RMS load voltage. The controller has a circuit with a time-based signal source that triggers conduction independently of line voltage magnitude and a transistor switch whose gate receives signals from the time-based signal source to trigger the circuit. When starting the power controller, a microcontroller increases the duty cycle of the pulse width modulation circuit in plural steps to provide the soft start.
Type:
Application
Filed:
April 1, 2005
Publication date:
July 14, 2005
Applicant:
OSRAM SYLVANIA INC.
Inventors:
Ernest Weyhrauch, George Kendrick, Matthew Ballenger
Abstract: A method of operating a power controller that converts a line voltage to an RMS load voltage includes a soft start in which a conduction angle or duty cycle is gradually increased to a steady state value that defines the RMS load voltage. The controller has a circuit with a time-based signal source that triggers conduction independently of line voltage magnitude and a transistor switch whose gate receives signals from the time-based signal source to trigger the circuit. When starting the power controller, a microcontroller increases a rate and/or duration of the signals from the time-based signal source in successive cycles of the load voltage to provide the soft start. The power controller may be in a voltage conversion circuit that converts a line voltage at a lamp terminal to the RMS load voltage usable by a light emitting element of the lamp.
Type:
Application
Filed:
April 1, 2005
Publication date:
July 14, 2005
Applicant:
OSRAM SYLVANIA INC.
Inventors:
Ernest Weyhrauch, George Kendrick, Matthew Ballenger
Abstract: A connecting pin (10) for an anode contact (11) (shown more completely in FIG. 2). The pin (10) has a body (12) with a longitudinal axis (14). A contact head (16) is formed at a proximal portion of the body (12) and a base (18) is formed at a distal portion of body (12). An intermediate shank (20) connects the head (16) and the base (18). The head (16), base (18) and intermediate shank (20) are all symmetrically arrayed about the longitudinal axis (14). The shank (20) has a first diameter (D) and the contact head (16) has at least one lateral dimension (D2) that is greater than the shank diameter (D). The base (18) has a diameter (D3) that is greater than the shank diameter (D) and has a surface (22) that is planar and substantially orthogonal to the longitudinal axis (14).
Abstract: A phase-control power controller that converts a line voltage to an RMS load voltage includes a phase-control circuit connected to the line and load terminals and having an RC network that clips the load voltage. A load sensing circuit is connected across the load terminals that senses the load voltage and provides a DC signal that is related to an RMS load voltage. A comparison circuit is connected to the phase-control circuit and the load sensing circuit and compares the DC signal to a reference and adjusts a resistance of the RC network in response to the comparison of the DC signal to the reference to control the RMS load voltage.
Abstract: A phase-control power controller that converts a line voltage to an RMS load voltage includes a phase-control circuit with a potentiometer and a capacitor whose resistance and capacitance determine clipping of a load voltage, a load sensing circuit that senses the load voltage and provides a DC signal that is different from but related to the RMS load voltage, and a comparator circuit that compares the DC signal to a reference and adjusts the resistance of the potentiometer to control the RMS load voltage. The power controller may be in a voltage conversion circuit that converts a line voltage at a lamp terminal to the RMS load voltage usable by a light emitting element of a lamp.
Abstract: A method for producing a luminescence diode chip, in which provision is made of a semiconductor body is provided having an epitaxially grown semiconductor layer sequence having an active zone and a radiation coupling-out area, the active zone emitting an electromagnetic radiation during operation of the luminescence diode, a large part of said electromagnetic radiation being coupled out via the radiation coupling-out area. A luminescence conversion material is arranged downstream of the radiation coupling-out area in an emission direction of the semiconductor body. A radiation-transmissive covering body having a first main area, a second main area opposite to the first main area, and also side areas connecting the first and second main areas. The covering body is applied to the radiation coupling-out area of the semiconductor layer sequence in such a way that the first main area faces the radiation coupling-out area.
Type:
Application
Filed:
November 1, 2004
Publication date:
July 7, 2005
Applicant:
Osram Opto Semiconductors GmbH
Inventors:
Hubert Ott, Stefan Grotsch, Herbert Brunner
Abstract: Method for introducing a limited amount of mercury into a fluorescent lamp during manufacture thereof includes the steps of forming the lamp with an exhaust tubulation therein open at an end thereof, exhausting the interior of the lamp through the exhaust tubulation, placing a body of metal material not reactive with mercury in the exhaust tubulation open end, the body having a coating of metal which amalgams with mercury, over a selected surface area of the body, and having mercury on the coated area of the body, such that a limited amount of the mercury is retained by the metal coating, and sealing the open end of the exhaust tubulation, whereby the amount of mercury retained on the body and introduced into the lamp is limited by the surface area of the metal coating on the body.
Type:
Grant
Filed:
June 25, 2003
Date of Patent:
July 5, 2005
Assignee:
Osram Sylvania Inc.
Inventors:
Gregory Zaslavsky, Richard Speer, Philip E. Moskowitz, Joseph V. Lima, Louise D. Cleary
Abstract: A low insertion force seating grommet (10) has a hollow body (12) arrayed along a longitudinal axis (14). The body (12) has a wide end (16) and a narrow end (18) connected by an intermediate portion (20). The narrow end (18) has a cylindrical aperture (18a) and the wide end (16) has a cup-shaped aperture (16a). A flange (22) surrounds the wide end (16) and is provided with a wall-opening engaging portion (24). Longitudinally extending relief grooves (26) are formed on the internal surface (28) of the cup-shaped aperture (18a).
Abstract: An embodiment of the present invention pertains to encapsulating an organic electronic device by selectively depositing a catalyst layer and then exposing the catalyst layer to a monomer to produce a planarization layer. The monomer reacts only in the areas where the catalyst layer is present so there is minimal or no contamination of other areas of the organic electronic device. Selectively depositing the catalyst layer allows the resulting planarization layer to be patterned. A barrier layer is selectively deposited on at least the planarization layer. Another embodiment of the present invention pertains to encapsulating an organic electronic device by depositing a planarization layer on a transfer substrate and then allowing it to stabilize to minimize its reactivity. The planarization layer is transferred from the transfer substrate onto at least an active area of the organic electronic device. A barrier layer is selectively deposited on at least the planarization layer.
Abstract: A carrier layer (1) for a semiconductor layer sequence comprising an electrical insulation layer (2) containing AlN or a ceramic. Furthermore a method for producing semiconductor chips is described.
Type:
Application
Filed:
November 29, 2004
Publication date:
June 16, 2005
Applicant:
Osram Opto Semiconductors GmbH
Inventors:
Stefan Groetsch, Stefan Illek, Andreas Ploessl, Berthold Hahn
Abstract: Method for introducing a limited amount of mercury into a fluorescent lamp during manufacture thereof includes the steps of forming the lamp with an exhaust tubulation therein open at an end thereof and provided with a ball retention structure, exhausting the interior of the lamp through the tubulation open end, placing a rigid ball of inert material in the tubulation between the ball retention structure and the tubulation open end, the ball having a coating of a selected one of silver, gold, and indium, of a selected mass over a selected surface area of the ball, and mercury on the coated area, and sealing the open end of the tubulation, whereby the amount of mercury retained on the ball and thereby introduced into the lamp is limited by the selected mass of the coating on the ball.
Type:
Grant
Filed:
December 3, 2002
Date of Patent:
June 14, 2005
Assignee:
Osram Sylvania, Inc.
Inventors:
Richard S. Speer, Louise D. Cleary, Joseph V. Lima