Loading patent…
AssigneeKoninklijke Philips Electronics N.V.
InventorsDirk Jan Broer, Christiane Maria Rosette De Witz, Grietje Neeltie Mol
Estimating the term…
A flexible foil which is moveable by light includes a dye which is capable of changing shape when absorbing light of a predetermined wavelength. The dye is dispersed in the foil such that, near at least one major surface of the foil, the dye is anisotropically oriented. Transverse to the foil, the concentration and/or orientation of the dye changes in an asymmetric manner. The change in orientation and/or concentration is such that, when exposed to light of the predetermined wavelength, the flexible foil moves. When exposed the dye changes shape which change in shape causes a change in lateral dimension of the foil which change in lateral dimension is, due to the change in concentration and/or orientation of the dye, different at different locations with the foil. This causes the flexible foil to move or more particular bend.
A flexible foil which is moveable by light, comprising a dye which is capable of changing shape when absorbing light of a predetermined wavelength, the dye being anisotropically oriented near at least one major surface of the foil and exhibiting, transverse to the foil, an asymmetric change in concentration and/or orientation, such that the foil moves when absorbing light of a predetermined wavelength by contraction along a first surface and expansion along a second surface.
A flexible foil comprising a dye which is capable of changing shape when absorbing light of a predetermined wavelength, the dye being anisotropically oriented near at least one major surface of the foil and exhibiting, transverse to the foil, an asymmetric change in concentration and/or orientation, wherein absorption of the light takes place across an entire thickness of the foil and lateral changes take place across the entire thickness.
Dependencies are inferred from the claim text.