Abstract:
An electrode for a high-pressure discharge lamp may include a shaft and a head mounted thereon, wherein at least a section of the head includes ceramic material, wherein the ceramic material is a boride or carbide.
Abstract:
This invention relates to a phosphor assembly with a phosphor element for converting pump light into converted light, and an optical system for transmitting converted light and/or pump light. Therein, a liquid immersion material is provided in a gap between the phosphor element and the optical system, wherein an excess of immersion material enables a continuous exchange of the material in the gap and thus provides a cooling.
Abstract:
In various embodiments, a method for operating a high-pressure discharge lamp below its nominal power is provided, wherein the high-pressure discharge lamp is operated at nominal power with an alternating current having a predetermined operating frequency, and the lamp voltage is measured during a half-cycle at least at the start of a half-cycle and at the end of a half-cycle. The method may include: reducing the present operating frequency below an upper limit; and changing the current shape of the alternating current to a monopitch roof-shaped current shape, which is dependent on the difference in the lamp voltages at the end and at the start of the half-cycle.
Abstract:
A DIN rail with at least one bottom wall (2) and two side walls (3a, 3b) emerging from the bottom wall (2) on opposite sides, wherein the DIN rail (1) is designed to accommodate, in a form-fitting and/or force-fitting manner, at least one light-emitting module (7) in an accommodating area (4) delimited by the bottom wall (2) and the side walls (3a, 3b).
Abstract:
A circuit for preheating filaments may include: a transistor; a first winding, one terminal of which being electrically connected with a collector of the transistor, and the other terminal being connected to an input of a power source; a second winding, one terminal of which being electrically connected with an emitter of the transistor, the other terminal being electrically connected with a base of the transistor, and the second winding being coupled with the first winding in a self-excitation mode; one or more load windings respectively connected with the filaments in series, and each of which being coupled with the first winding in a flyback mode; and a delay switch, configured to change into an on state from an off state when a trigger signal with a predetermined delay is received, so as to turn off the transistor.
Abstract:
A method for making a cooling body for a lighting device may include: a) Providing multiple aluminum nitride ceramic radiators; b) Putting the multiple aluminum nitride ceramic radiators into a mold; c) Closing the mold, and injecting a melting metal into the mold so that the metal encloses a portion of each of the aluminum nitride ceramic radiators, wherein the metal has a melting point lower than that of the aluminum nitride ceramic radiators; and d) Opening the mold, and obtaining the cooling body.
Abstract:
An energy box comprising a rechargeable battery, charging electronics having an information transmitter which is connected to the rechargeable battery, an inductive charging device, which is connected to the charging electronics, a controller having an information memory, which controller controls the charging electronics, at least one sensor for detection of useful data, which sensor is connected to the controller, at least one semiconductor light source, which is used both for indication of data and for transmission of useful data, the useful data which is stored in the controller being transmitted optically via the at least one semiconductor light source during the charging process.
Abstract:
In a method for operating at least one light emitting diode the at least one light emitting diode is operated at least in some ranges by means of a pulse number modulation, in which a number of uniform current pulses is set within a predetermined interval duration depending on a light energy desired value.
Abstract:
A high-pressure discharge lamp may include a quartz glass bulb which encloses a discharge volume, and a fill which contains mercury and noble gas as well as metal halides being held in the discharge volume, wherein the fill contains both dysprosium halides and also oxyhalides of at least one of tungsten and mercury based on at least one of the halogens bromine and chlorine.
Abstract:
A lighting system may include a housing for a lighting module and at least one profiled element which can be coupled to the housing and protrudes from the housing when coupled to the housing. The housing has an external surface with a plurality of channels and comprises a plurality of seats. The profiled element may have a first engagement formation insertable into one of the channels of the housing and a second engagement formation insertable into one of the seats of the housing when the first engagement formation is inserted in the channel. Blocking means movable into a first and into a second operative position, may be.