Signify Holding B.v.

Kamlesh Kumar

Hugo Johan Cornelissen

Dirk Jan Broer

Giovanni Cennini

Jianghong Yu

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.

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Eindhoven, Netherlands

Kamlesh Kumar