Koninklijke Philips Corporation N.V.

Peter Vergeer

Eduard Johannes Meijer

Rifat Ata Mustafa Hikmet

Volkmar Schulz

Christoph Martiny

Light sensors () are used in lighting applications, especially in combination with LEDs, to control and/or adapt the color point of light sources. Costs and/or performance of the light sensor () are essential in order to guarantee cost-effective light sources with reproducible color points. This aim is achieved by a light sensor () comprising a light diffuser (), an optical non-transparent housing () having at least one window (), at least one interference filter () and at least two photo sensors (). The light diffuser () is arranged in such a way that light from outside the optical non-transparent housing () has to pass the light diffuser () so as to enter the interior of the optical non-transparent housing () via the window (). The interference filter () and the at least two photo sensors () are arranged in the interior of the optical non-transparent housing (), which interference filter () is arranged between the window () and the at least two photo sensors ().

Light sensor and lighting device with adaptable color

This invention relates to a light angle selecting light detector device comprising a detector unit which is arranged to receive light selected by a selector unit. The device comprising at least one set of light passing areas. Each set of light passing areas consists of a first light passing area having a first size, which first light passing area is located on a first surface, and a second light passing area having a second size, which second light passing area is located on a second surface. The first light passing area and the second light passing area are arranged with a lateral displacement and form a light path from the first surface to the second surface for light having an incident angle between a maximum angle and a minimum angle.

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Veldhoven, Netherlands

Peter Vergeer