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AssigneeKoninklijke Philips Electronics N.V.
InventorsMartin Hillebrand Blees, Ferry Barrios, Wilhelmus Frederik Hoeben, Mikhail Sorokin, Ludo Haenen, Bennie Simpelaar, Nebojsa Fisekovic
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The present invention relates to a portable illumination device (100) for illuminating an object (200) through a medium having an absorption coefficient, the illumination device (100) comprising a lighting unit (101) including at least two differently colored light sources (Li-L3) for emitting light having a color distribution, and a control unit (105) for adjusting the color distribution. The control unit (105) is adapted to receive a distance estimate corresponding to the distance between the illumination device (100) and the object (200), and adjust the color distribution depending on the distance estimate, such that light reflected from the object is perceived to have substantially correct color reproduction. An advantage with the invention is that an object (200) illuminated through a medium will be perceived by a user using the portable illumination device (100) as having a substantially correct color reproduction.
A portable illumination device (100) for illuminating an object (200) through a medium, the medium having an absorption coefficient and being able to absorb a portion of the visible light spectrum, said illumination device (100) comprising:
A method for illuminating an object through a medium, the medium having an absorption coefficient and being able to absorb a portion of the visible light spectrum, using a portable illumination device having a lighting unit (101) including at least two differently colored light sources (L1-L3) for emitting light having a color distribution;
Dependencies are inferred from the claim text.