A skin treatment device comprising a light source providing a light beam for optically treating skin, a wheel with a wheel surface for reflecting the light beam towards the skin, driving means for rotating the wheel and changing an angular position of the wheel, where different angular positions of
A skin treatment device comprising a light source providing a light beam for optically treating skin, a wheel with a wheel surface for reflecting the light beam towards the skin, driving means for rotating the wheel and changing an angular position of the wheel, where different angular positions of the wheel correspond to different directions of reflection for the light beam, an angular position detector for detecting the angular position of the wheel, storage means for storing predefined skin-treatment patterns, a relation between the different angular positions of the wheel; and different reflection directions of the light beam, a control circuit coupled to the light source. The light source being controlled in dependence on the detected angular position such that, for each revolution of the wheel, the light beam is controlled to only illuminate the wheel surface in selected angular positions of the wheel to realize a predefined skin-treatment pattern.
대표청구항▼
1. A skin treatment device comprising: a light source configured to provide a light beam for optically treating a skin,a wheel with a wheel surface for reflecting the light beam towards the skin, the wheel surface comprising multiple facets for reflecting the light beam towards the skin in a mutuall
1. A skin treatment device comprising: a light source configured to provide a light beam for optically treating a skin,a wheel with a wheel surface for reflecting the light beam towards the skin, the wheel surface comprising multiple facets for reflecting the light beam towards the skin in a mutually different direction of reflection, each facet associated with a different predetermined angular position in the wheel, each facet corresponding to one of the different directions of reflection,a single identification element associated with a predetermined single one of the multiple facets, wherein the single identification element comprises a unique element attached to the wheel surface at a single predetermined angular position,driving means configured to rotate the wheel for changing an angular position of the wheel, different angular positions of the wheel corresponding to respective different directions of reflection for the light beam,an angular position detector arranged to detect a passage of the single identification element associated with a predetermined one of the different angular positions of the wheel, the angular position detector including a light sensor,a storage means configured to store a predefined skin-treatment pattern and a relation between the different angular positions of the wheel and the corresponding respective different directions of reflection for the light beam, or a parameter corresponding with said direction of reflection,a control circuit coupled to the light source, the angular position detector and the storage means,the control circuit being configured to: start treatment at a predetermined angular position of the wheel and a corresponding direction of reflection of the light beam,create microscopic treatment zones at selected positions on the skin,recognize a distinct signal that is provided by the angular position detector that is generated each time the single identification element passes once per revolution of the wheel,selectively illuminate the facets based on a passage of a stored sequence of selected facets to be illuminated from among the multiple facets to provide a predefined skin-treatment pattern of microscopic treatment zones at the skin,control the light source in dependence on the angular position detected by the angular position detector, such that, for each revolution of the wheel, the light beam only illuminates the wheel surface in selected angular positions of the wheel to realize the predefined skin-treatment pattern,a skin feature detector configured to detect characterizing features of the skin, the skin feature detector being coupled to the control circuit and the control circuit being arranged to adapt a predefined skin-treatment pattern based on the detected characterizing features. 2. A skin treatment device as claimed in claim 1, wherein the storage means is operative to store a sequence of the multiple facets, and wherein the control circuit is arranged to selectively illuminate the facets, based on the stored sequence of the multiple facets and the passage of the predetermined single one of the multiple facets. 3. A skin treatment device as claimed in claim 1, wherein the characterizing features are wrinkles, pigment spots or skin lesions. 4. A skin treatment device as claimed in claim 1, wherein the angular position detector is arranged to detect a passage of a second predetermined one of the multiple facets. 5. A skin treatment device as claimed in claim 1, wherein the physical property of the wheel surface is a translucency coefficient. 6. A skin treatment device as claimed in claim 1, wherein the geometrically different flake is shorter than the other flakes. 7. A skin treatment device as claimed in claim 1, wherein the geometrically different flake comprises two flake parts separated by a gap. 8. A skin treatment device as claimed in claim 1, wherein the wheel surface comprises a hole which is associated with the predetermined single one of the multiple facets, and wherein the angular position detector comprises a second light source and a light sensor arranged such that light from the second light source can reach the light sensor through the hole. 9. A skin treatment device as claimed in claim 1, wherein the wheel surface comprises a further reflective surface which is associated with the predetermined single one of the multiple facets, and wherein the angular position detector comprises a second light source and a light sensor, arranged such that light from the second light source can reach the light sensor via the further reflective surface. 10. A skin treatment device as claimed in claim 1, wherein the angular position detector is configured to detect a parameter corresponding with said angular position. 11. A skin treatment device as claimed in claim 1, wherein the storage means is further configured to store a parameter corresponding with said angular position. 12. A skin treatment device as claimed in claim 1, wherein the storage means is further configured to store a parameter corresponding with said direction of reflection. 13. A skin treatment device as claimed in claim 1, wherein the characterizing features of the skin comprise at least one of: wrinkles, pigment spots and skin lesions. 14. A skin treatment device as claimed in claim 1, wherein the characterizing features of the skin comprise at least one of: skin color and skin moisture. 15. A skin treatment device as claimed in claim 1, wherein said control circuit is adapted to only affect a detected wrinkle or pigmented spot. 16. A skin treatment device as claimed in claim 1, wherein said control circuit is adapted to be controlled in a manner such that selected parts of the skin are not treated. 17. A skin treatment device as claimed in claim 1, wherein said single identification element associated with said predetermined single one of the multiple facets is a physical property of the wheel surface. 18. A skin treatment device comprising: a light source configured to provide a light beam for optically treating a skin,a wheel with a wheel surface for reflecting the light beam towards the skin, the wheel surface comprising multiple facets for reflecting the light beam towards the skin in a mutually different direction of reflection, each facet associated with a different predetermined angular position in the wheel, each facet corresponding to one of the different directions of reflection, each facet comprising a corresponding flake, wherein a flake of a predetermined single one of the multiple facets is geometrically different from the flakes of the other facets to provide a different triggering pulse from the other flakes at a predetermined angle position,driving means configured to rotate the wheel for changing an angular position of the wheel, different angular positions of the wheel corresponding to respective different directions of reflection for the light beam,an angular position detector arranged to detect a passage of the geometrically different flake at said predetermined angle position, the angular position detector including a light sensor,a storage means configured to store a predefined skin-treatment pattern and a relation between the different angular positions of the wheel and the corresponding respective different directions of reflection for the light beam, or a parameter corresponding with said direction of reflection,a control circuit coupled to the light source, the angular position detector and the storage means,the control circuit being configured to: start treatment at a predetermined angular position of the wheel and a corresponding direction of reflection of the light beam,create microscopic treatment zones at selected positions on the skin,recognize a distinct signal that is provided by the angular position detector that is generated each time the geometrically different flake passes once per revolution of the wheel,selectively illuminate the facets based on a passage of a stored sequence of selected facets to be illuminated from among the multiple facets to provide a predefined skin-treatment pattern of microscopic treatment zones at the skin,control the light source in dependence on the angular position detected by the angular position detector, such that, for each revolution of the wheel, the light beam only illuminates the wheel surface in selected angular positions of the wheel to realize the predefined skin-treatment pattern,a skin feature detector configured to detect characterizing features of the skin, the skin feature detector being coupled to the control circuit and the control circuit being arranged to adapt a predefined skin-treatment pattern based on the detected characterizing features.
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