Koninklijke Philips Corporation N.V.

Philips Lighting Holding B.v.

Koninklijke Philips Electronics N.v.

Philips Intellectual Property & Standards Gmbh

Georg Greuel

Wolfgang Schiene

Marc Maria Alex Bleukx

Norbert Braun

Thomas Juestel

Cornelis Reinder Ronda

Bart Gottenbos

Georg Friedrich Gartner

Jianghong Yu

Thomas Justel

Peter Van De Weijer

Eva Mondt

Georg Friedrich Gaertner

Volker Dirk Hildenbrand

Michael Schaaf

Roman Schichl

Jacques Maria Jozef Geboers

Michael Buechel

Einte Holwerda

Andreas Poqué

Petrus Henricus Laurentius Notten

Daiyu Hayashi

Boudewijn Johannes Catharinus Jacobs

Thomas Jüstel

Margaretha Maria De Kok Van Breemen

Cornelis Reinder Reinder Ronda

Sandeep Sangameswaran

Jagoda Magdalena Kuc

Rik Van Ark

Arjan Van Der Pol

Benjamin Herden

Ronald Peter Groenestein

Tim Koecklar

Henricus Lambertus Antonius Adrianus Vogels

A luminescent composition includes a host matrix sensitized by Ceand showing emission in the ultraviolet range. Typical host matrices include fluorides, sulphates, and phosphates, in particular A(YLuLa)F, A(YLuLa)F, BaCa(YLuLa)F, and Ba(YLuLa)F, wherein A=Li, Na, K, Rb, or Cs. One or more of these luminescent compositions may be applied as a ceramic or single crystalline converter for CT, PET or SPECT scanners, or as a luminescent powder layer for x-ray intensifying screens.

[object Object]

The invention relates to an UV radiation device, comprising an LED comprising a nitridic material which is arranged to emit first UV radiation in a wavelength range of 200 nm-300 nm and a luminescent material doped with at least one of the following activators selected out of the group Eu, Ce, Pr, Nd, Gd, Tm, Sb, Tl, Pband Bi, wherein the luminescent material is configured to convert at least a part of the primary UV radiation into secondary UV radiation, the primary UV radiation and the secondary UV radiation having a different spectral distribution.

UV radiation device

An optical fluid treatment device comprising at least a holder provided with an aperture, a lamp device at least partly located in the aperture. The aperture comprises a fluid passage extending in a main fluid flow direction between a fluid inlet opening and a fluid outlet opening. The fluid passage extends at least partly along the lamp device, wherein the lamp device has an elongated shape extending substantially perpendicularly to the main fluid flow direction.

Optical fluid treatment device

The invention provides a a luminescent material comprising particles of UV-luminescent material having a coating, wherein the coating (a 'multi-layer coating') comprises a first coating layer and a second coating layer, wherein the first coating layer is between the luminescent material and the second coating layer, and wherein in a specific embodiment the second coating layer comprises an alkaline earth oxide, especially MgO. Further, the invention provides a lighting unit comprising such luminescent material.

Luminescent material particles comprising a coating and lighting unit comprising such luminescent material

An optical reactor has a reactor enclosure defining a reaction chamber. In the reaction chamber, a light source operating at a very high frequency is arranged to radiate light to a fluid to be treated. A low voltage electrode is arranged to surround the light source. The light source is energized by a driving circuit which is arranged adjacent to the reactor enclosure. The driving circuit has a high voltage output terminal connected to a high voltage input terminal of the light source. The driving circuit has a low voltage output terminal which is connected to the low voltage electrode.

Optical reactor and driving circuit for optical reactor

A disinfecting device is proposed that is well suited for household and outdoor use. The device comprises a container housingwith an interior volume, which may contain an object or a liquid to be disinfected. The container housingcomprises a side walland an end cover. A dielectric barrier discharge lampis provided for emitting ultraviolet light into the volume. The lampcomprises a lamp vesselwith gas filling and electrodesarranged electrically insulated from the gas filling. An alternating voltage applied to the electrodescauses a discharge in the gas filling. The lamp vesselhas a planar window from which during the discharge ultraviolet lightis emitted. The window is arranged in the end cover

UV disinfecting device

In a fluid treatment system includes a housing with fluid inlet and outlet for a process fluid, an irradiation zone disposed between the fluid inlet and fluid outlet, and at least one radiation source module with a radiation source having a discharge vessel with outer and inner wall. The inner wall encloses an internal volume with at least one opening and an internal electrode for igniting and maintaining a discharge. The radiation source module also includes a submersible frame with a guide to guide the process fluid into and out of the internal volume of the radiation source. The dissipation of the heat generated by the discharge in the discharge gap via a fluid flow in the internal volume of the lamp and in contact with the internal electrode is substantially more effective than dissipation via a cooling channel separated from the internal electrode. It is therefore substantially easier to maintain the discharge at an approximately optimal temperature.

Fluid treatment system comprising radiation source module and cooling means

Devices and Methods for sensing UV dosage of a fluid stream are described. In a first aspect, a devicehas a first sensor arrangementfor measuring a flow speed of the fluid and a second sensor arrangementfor measuring an intensity of UV light radiation. A dosage calculation unitcalculates a dosage value from measurements of the sensor arrangements. The first sensor arrangement includes a resistive electrical componentin thermal contact with the fluid. The electrical componentmay be heated by an electrical current and has a temperature dependent electrical resistance. Thus, the first sensor arrangement may be used to determine the flow speed of the fluid from a cooling rate of the resistive electrical component. According to a second aspect, a deviceincludes at least one UV sensor componentfor measuring an intensity of UV light irradiation. A data storagefor storing intensity or dosage values and an electrical power storageare provided. The device is adapted to freely float within the fluid stream. As such, the devicemay be inserted into a fluid flowing through a channel, and a dosage value may be determined from data stored in the data storage after the devicehas passed through the channel.

Sensing UV dosage of a fluid stream

Transformers () for transforming primary signals into secondary signals comprise primary and secondary parts that comprise boards (--) with turns. By introducing distances larger than zero between for example any pair of neighboring boards (--), parasitic capacitances of the transformers () are reduced, and the secondary signals may comprise relatively fast/high voltage pulses having rise times &#x3e;1 kV/&#x3bc;sec. To reduce proximity effects and any resulting losses, the primary and secondary boards (--) may be stacked in interleaved ways. Such sandwich constructions reduce leakage inductances. In a particular direction, distances between subsequent primary boards (--) and distances between subsequent combinations of primary and secondary boards (--) are to be increased to further reduce capacitive losses in that particular direction. Relatively low voltage differences may be present between relatively close boards (--), and relatively high voltage differences may be present between boards (--) that are relatively far away from each other.

Planar transformer with boards

A dielectric barrier discharge (DBD-) lamp () comprising a discharge volume () which is delimited by a first and a second wall () is disclosed, wherein both walls () are exposed to different electrical potentials by means of a power supply () for exciting a gas discharge within the discharge volume (). By providing at least one electrically conductive ignition aid or igniter which extends within the discharge volume () and which electrically contacts the first and the second wall () with each other, a significant reduction of the initial ignition voltage of the lamp () can be obtained, especially after long pauses of operation of the lamp ().

Dielectric barrier discharge lamp

It is provided a dielectric barrier discharge lamp () for providing ultraviolet light, comprising an outer tube () filled with a discharge gas for providing ultraviolet light, an inner tube () arranged at least partially inside the outer tube (), an outer electrode () electrically connected to the outer tube () and an inner electrode () electrically connected to the inner tube (), wherein the inner electrode () comprises a conductor () and a plurality of an conductive granulated material () for providing an electrical contact between the conductor () and the inner tube (). Due to the conductive granulated material () an electrical contact between the conductor () and the inner tube () is safeguarded and different thermal expansions of the inner electrode () and the inner tube () are compensated at the same time without applying mechanical stress to the inner tube (). This leads to a dielectric barrier discharge lamp (), which comprises an increased life time without the need for external cooling.

The subject of the present invention is a dielectric barrier discharge (DBD-) lamp () for generating and emitting ultraviolet radiation comprising: &#x2014;a housed discharge gap (), whereby the housing has at least two walls, whereby at least one of the walls is a dielectric wall and at least one of the walls has an at least partly transparent part, a filling located inside the discharge gap (), at least two electrical contacting means for electrical contacting associated with at least the two walls, respectively, whereby the discharge gap () is formed by at least two discharge sub-volumes () and/or discharge sub-areas () differing in at least one of their discharge parameters for realizing at least two dominant emission regimes and/or one emission regime with different radiant intensities and a method for producing said DBD-lamp ().

Segmented dielectric barrier discharge lamp

The present invention relates to an inrush current limiter device () for limiting inrushing current to a connectable load () comprising: at least one switchable IGBT-based limiter unit () for selectively limiting the inrushing current, having at least one current limiting conductor element for a limited leading of current and at least an IGBT-based switch (Q), whereby the IGBT-based switch (Q) is used as well as a controlled current limiter and as a by-pass element, and at least one control device () for controlling the IGBT-based switch (Q), whereby the control device () comprises at least one IGBT-based switch supply () and means for realizing () a smooth flank of an output signal at the selected conductor element.

Inrush current limiter device and power factor control (PFC) circuit having an improved inrush current limiter device

The present invention relates to an adaptive driver for driving a gas discharge lamp and a method for operating a gas discharge lamp driven by an adaptive driver, especially a capacitive gas discharge lamp and more especially a dielectric barrier discharge (DBD) lamp in a permanent optimized mode comprising the steps: measuring, sensing, and/or detecting a signal representing the key values of the output of the driver (current, power, voltage, frequency), calculating at least one actual reference value for the quality of the discharge of said lamp, comparing said actual reference value to at least one predefined value for an optimized operation mode of said lamp, and adjusting a power supply according to the result of said comparing.

Adaptive drive for dielectric barrier discharge (DBD) lamp

The subject of the present invention is a lamp-ballast-system (), especially a dielectric barrier discharge (DBD-) lamp-ballast-system for generating and/or emitting a radiation of ultraviolet (UV-)-light comprising: a lamp () having means for electrical contacting and a ballast () having a housing () accommodating at least a high-voltage part and a lamp support, connectable to and supplying the DBD-lamp () at least with electricity, whereby the electrical connection () between the DBD-lamp () and the ballast () is arranged cable-free.

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Roetgen, Germany

Georg Greuel