Koninklijke Philips Corporation N.v.

Koninklijkle Philips N.v.

Signify Holding B.v.

Eugene Timmering

Eduard Johannes Meijer

Ronald Dekker

Johannes Petrus Maria Ansems

Martin Jacobus Johan Jak

Marc Andre De Samber

Christoph Gerard August Hoelen

Theodorus Johannes Petrus Van Den Biggelaar

Johannes P M Ansems

Christoph G A Hoelen

The invention relates to an interference filter () for receiving an incident light () and selecting a light component of the incident light to be transmitted (). The interference filter () includes a metal mirror (), a dielectric mirror (), and a spacer () placed between the metal mirror () and the dielectric mirror (). The metal mirror () and the dielectric mirror () are configured to enable optical interference in the spacer () to select the light component of the incident light to be transmitted (). Using one metal mirror and one dielectric mirror allows achieving a spectral response with high finesse and large rejection band while reducing the total number of layers in the filter and reducing the number of additional filters necessary for removing transmitted side bands, relative to prior art approaches.

Interference filters with high transmission and large rejection range for mini-spectrometer

Proposed is a light sensor (), comprising at least one wavelength selective photo-detector (), a lens () and an aperture ().The wavelength selective photo-detector allows detecting light within a predefined wavelength range falling on the sensor. The lens project light on the photo-detector and the aperture defines a field of view of the light sensor. The photo-detector (), the lens (), and the aperture () are arranged in a telecentric configuration. Advantageously, this allows light to impinge on the wavelength selective photo-detector within a predefined range of angles irrespective of the direction of the light incident on the aperture, thus removing the angle dependent response of the wavelength selective photo-detector.

Photo-detector and method of measuring light

The present invention relates to a luminaire comprising an array of LEDs emitting light of at least one color, and a control system for controlling the light output of the luminaire. The control system comprises photosensor array for detecting light output of the luminaire. An imaging unit is arranged in front of the photosensor array such that it maps an image of said array of LEDs on said photosensor array. The photosensor array is divided into subareas each detecting light output from a single one of the LEDs. The control system uses the output of the subareas for controlling the luminaire light output. Thus, it is possible to act on different LED light colors or the light output of individual LEDs without having to separate them in time by means of a time pulsing method.

LED luminaire with optical feedback by image mapping on segmented light sensors

The present invention relates to a light-emitting device comprising a substrate, a circuitry, a LED in electrical connection with said circuitry, and a heat sink arranged to transport heat away from the LED, wherein the LED is in thermal contact with said heat sink through an opening in said substrate. The present invention also relates to methods for the manufacture of such a device.

Semiconductor light-emitting device with improved heatsinking

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Eindhoven, Netherlands

Eugene Timmering