FIELD: physics, optics.
SUBSTANCE: invention relates to light engineering and specifically to a variable colour light emitting device (100; 200; 300; 400) comprising at least one light source (101; 201; 303; 401) and at least one deformable element (102; 202; 301; 402). The deformable element (102; 202; 301; 402) comprises particles of at least one wavelength converting material (103; 203; 305; 403), wherein the deformable element (102; 202; 301; 402) is arranged to receive light from the at least one light source (101; 201; 303; 401) and to convert it into light of another wavelength. Since the element comprising the wavelength converting material is deformable, the thickness of the element can be varied. This thickness variation allows for the wavelength converting material, and therefore also the colour, to be tuned.
EFFECT: enabling control of colour variation.
9 cl, 5 dwg
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