Koninklijke Philips Corporation N.v.

Lumileds LLC

Philips Lighting Holding B.v.

Signify Holding B.v.

Lumileds Holding B.v.

Koninklijke Philips Electronics N.v.

Giovanni Cennini

Hugo Johan Cornelissen

Vincent Jeanne

Jianghong Yu

Michel Cornelis Josephus Marie Vissenberg

Martinus Hermanus Wilhelmus Maria Van Delden

Fetze Pijlman

Hendrikus Hubertus Petrus Gommans

Leon Wilhelmus Godefridus Stofmeel

Marcellinus Petrus Carolus Michael Krijn

Tim Dekker

Anthonie Hendrik Bergman

Johannes Wilhelmus Weekamp

Frederik Jan De Bruijn

Ihor Olehovych Kirenko

Ruud Vlutters

Serge Joel Armand Bierhuizen

Dmitri Anatolievich Chestakov

Sébastien Paul René Libon

Cornelis Reinder Ronda

Dirk Jan Broer

Erik Paul Boonekamp

Kenneth John Vampola

Varun Dev Kakkar

Antonius Petrus Marinus Dingemans

Antonius Maria Rijken

Yadong Liu

Gerard Kums

Ling Shao

Michel C J M Vissenberg

Nicolaas Joseph Martin Van Leth

Hugo Johan Comelissen

Kamlesh Kumar

Henricus Johannes Joseph Bouwens

Frederik J De Bruijn

Kenneth Vampola

A lighting arrangement and a method of coupling light into a light guide are described. A light source is embedded within a light guide. The light guide includes first and second outer surfaces arranged on opposite sides. A forward direction extends from the light source parallel to the first outer surface. A collimator is embedded within the light guide. The collimator comprises a first reflector surface facing towards the second outer surface and a second reflector surface facing towards the first outer surface. The light source is arranged to emit light between the first and second reflector surfaces. The first reflector surface is arranged at least substantially parallel to the forward direction. At least a portion of the second reflector surface is arranged under an angle to the forward direction.

Lighting arrangement with light guide

A method for manufacturing an assembly () is disclosed. The assembly () comprises a substrate () having a first surface () and a second surface (). The substrate () is at least partially plastically deformable. The assembly () comprises a supporting surface () arranged to support at least a portion of the second surface (). The substrate () is plastically deformed, thereby producing an elastic preload in at least a portion of the substrate (). The substrate () is fixedly arranged in the assembly () such that the second surface () is placed against the supporting surface (), wherein the elastic preload in the at least a portion of the substrate () produces a force between the at least a portion of the second surface () and the supporting surface (), whereby the at least a portion of the second surface () becomes in abutment with the supporting surface () over the at least a portion of the second surface (). A light source comprising the assembly () is also disclosed.

Tubular lighting assembly with elastic elongated substrate and method of manufacturing a tubular lighting assembly with elastic elongated substrate

The invention provides a lighting device () comprising a light source () configured to generate light source light () and a light converter element (), wherein the light converter element () comprises a light transmissive matrix (), wherein the light transmissive matrix () comprises: (i) a first luminescent material () configured to convert at least part of one or more of (a) the light source light () and (b) optionally a second luminescent material light () from an optional second luminescent material () into a first luminescent material light (); and (ii) a thermo-responsive liquid crystalline compound (); wherein the light transmissive matrix () is configured in thermal contact with the light source (), and wherein the lighting device () is further configured to provide lighting device light () comprising said light source light (), said first luminescent material light () and optionally said second luminescent material light (), and wherein said light converter element is arranged for changing one or more of the color and color temperature of the lighting device light with the electrical power provided to the light source.

LED with thermo-responsive black-body line dimming

A method of photoplethysmography includes processing a signal based on at least one signal from at least one sensor arranged to capture light from a living subject to extract information on a characteristic of a periodic biological phenomenon. At least one of the signals from at least one sensor is obtained via sensing radiation as to a peak in an absorption spectrum of water.

Method and system for carrying out photoplethysmography

A solid state light-emitting device (LED) lighting apparatus comprising a leadframe assembly comprising leadframes spaced apart at a pitch, each leadframe comprising at least one pad, interconnects each linking two adjacent leadframes, LEDs mounted on the leadframes, and bidirectional spreading lenses disposed about the LEDs, each bidirectional spreading lens having a spreading axis and a null axis perpendicular to the spreading axis, each bidirectional spreading lens directing more light in opposite directions along the spreading axis than the null axis, the spreading axis being aligned along the length of the stretched leadframe assembly.

Pre-rotated overmoulded bidirectional spreading lens for stretched leadframe architecture

A method for manufacturing a solid state light-emitting device (LED) lighting apparatus includes forming a leadframe assembly with a group of leadframes connected in series by folded interconnects, mounting LEDs on the leadframes, disposing optical elements about the LEDs, and stretching the leadframe assembly so the interconnects unfold to space apart the LEDs. Disposing the optical elements includes orienting the optical elements so the optical elements provide a predetermined light pattern after stretching the leadframe assembly.

Application of a wavelength conversion element is substantially independent of the fabrication of a side-emitting light emitting device. In an example embodiment, the wavelength conversion element is situated around the periphery of a non-wavelength converting lightguide that is situated above the light emitting surface. One or more specular and/or diffusing reflectors are used to direct the light in the lightguide toward the wavelength conversion element at the periphery. In another embodiment, an interference filter may be used to provide predominantly side-emitted light at interfaces between the elements of the light emitting device.

Flip-chip side emitting LED with top reflector, peripheral wavelength conversion element, and optical element between light emitting element and lightguide element

A lighting assembly, a light source and a luminaire are provided. The lighting assemblycomprises a primary thermal layer, a plurality of Lighting Emitting Diode assembliesand a plurality of wires. The primary thermal layeris of a thermally conductive material. The wiresare electrically coupled between electrodesof at least two different Light Emitting Diode assemblies. The Light Emitting Diode assembliescomprise a sub-mount, a first and a second metal electrodeand a Light Emitting Diode die. The sub-mountis of a thermally conductive and electrically insulating ceramic. The sub-mounthas a first side which is thermally coupled to the primary thermal layerand has a second side being opposite the first side. The first and the second metal electrodeare arranged at the second side of the sub-mount. The Light Emitting Diode dieis electrically and thermally coupled with an anode of the Light Emitting Diode to the first metal electrode and with a cathode of the Light Emitting Diode to the second metal electrode.

Lighting assembly, a light source and a luminaire

A lighting device comprising a support panel located between two outer sheets, which support panel is provided with at least one light emitting module, while at least one of the outer sheets is translucent. The outer sheets are movable with respect to each other at least from a folded state in which the support panel and the outer sheets extend substantially parallel to each other and an unfolded state in which the outer sheets are at least partly further spaced apart than in the folded state.

Lighting device

A light output device and manufacturing method in which an array of LEDs is embedded in an encapsulation layer. An array of cavities (or regions of different refractive index) is formed in the encapsulation layer. The cavities/regions have a density or size that is dependent on their proximity to the light emitting diode locations, in order to reduce hot spots (local high light intensity areas) and thereby render the light output more uniform over the area of the device.

Light output device and method of manufacture

A lighting device has an array of light emitting diodes (LEDs), an adhesion layer having portions with photo-activated electrical conductivity over the LEDs, and electrically charged scattering particles adhered by electrostatic attraction to the adhesion layer portions, thereby forming scattering regions that are self-aligned to the light emitting diodes. A method for manufacturing the lighting device includes photo-activating the adhesion layer using light output from the light emitting diodes to locally vary the conductivity of the adhesion layer; and attaching electrically charged scattering particles to the adhesion layer by electrostatic attraction.

Lighting device with electrostatically adhered scattering particles and method of manufacture

A light output device and manufacturing method in which an array of LEDs () is embedded in an encapsulation layer (). An array of cavities () (or regions of different refractive index) is formed in the encapsulation layer (). The cavities/regions () have a density or size that is dependent on their proximity to the light emitting diode () locations, in order to reduce hot spots (local high light intensity areas) and thereby render the light output more uniform over the area of the device.

Light output device having an array of cavities with different refractive index within the encapsulation layer

There is provided a method for manufacturing a light emitting diode, LED, matrix () comprising the steps of providing with a maintained integrity a conductor sheet () with a plurality of component areas () interconnected with meandering connection tracks (), mounting a plurality of LEDs () to a respective component area thereby forming a subassembly (), trimming and stretching the subassembly thereby straightening the connection tracks such that an m&#xd7;n LED conductor matrix is formed during the step of stretching.

Method and device of a LED matrix

A method of controlling a function of a device, includes obtaining a sequence () of digital images taken at consecutive points in time. At least one measurement zone () including a plurality of image points is selected. For at least one measurement zone (), a signal () representative of at least variations in a time-varying value of a combination of pixel values at at least a number of the image points is obtained and at least one characteristic of the signal () within at least a range of interest of its spectrum relative to comparison data is determined. The determination comprises at least one of:

Method of controlling a function of a device and system for detecting the presence of a living being

A method of processing images of at least one living being, includes obtaining a sequence () of digital images taken at consecutive points in time. At least one measurement zone () comprising a plurality of image points is selected. For each measurement zone (), a signal () representative of at least variations in a time-varying value of a combination of pixel values at at least a number of the image points for use in determining at least one of a presence and a frequency value of at least one peak in a spectrum of the signal () corresponding to a frequency of a periodic physiological phenomenon is obtained. The step () of selecting at least one measurement zone () includes analyzing information based on pixel data of a plurality of image parts in at least one of the images (), each image part including at least one image point, and selecting each measurement zone () from contiguous parts determined to have similar characteristics.

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Eindhoven, Netherlands

Giovanni Cennini