Koninklijke Philips Corporation N.v.

Simone Irene Elisabeth Vulto

Coen Theodorus Hubertus Fransiscus Liedenbaum

Jacobus Petrus Johannes Van Os

Suzanne Daniëlle Van Der Zaan-Landwehr Johan

Suzanne Daniëlle Van Der Zaan - Landwehr Johan

There is provided a light treatment device (). The device () comprises a carrier () having an opening () for positioning over and viewing a treatment area and a light emitter () for providing treatment light to the treatment area. There is also provided an attachment () for attaching the carrier to a patient. The device is useful as the opening can be positioned over an area where light therapy is desired, whilst viewing the area, and then held in position with the attachment. Light therapy can then be administered to the area and treatment of areas where light therapy is not desired can be avoided.

Light treatment device

This invention relates to a method for color correction in an organic electroluminescent device (), having at least one pixel (), comprising an electro-luminescent material layer (), which is sandwiched between a first and a second electrode (), and constituting at least a first and a second light-emitting element (R,G), wherein said method comprises the steps of: inputting a data signal (S) comprising information to be displayed by said light-emitting elements (R,G), generating, in a correction means (), a correction factor for each light-emitting element (R,G), said correction factor being based on a relationship between a color point wavelength shift (&#x394;&#x3bb;) and a measured shift in one of a voltage across at least one of said light-emitting elements (R,G) at a predetermined current (I) and a current through at least one of said light-emitting elements (R,G), at a predetermined voltage (V), applying said correction factor on said data signal (S), and supplying the corrected data signal (S) to the light-emitting elements (R,G). The invention also relates to a drive means implementing the above-described method.

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Eindhoven, Netherlands

Simone Irene Elisabeth Vulto