| 摘要 |
The present invention relates to a skin treatment device ( 1, 1 '). The device comprises in a housing a source of radiation ( 13 ), that is emittable through an exit opening in the housing. It further comprises a plurality of skin presence sensors ( 43, 63 ) that are able to measure the presence of skin ( 7 ) at their respective positions, and a control unit ( 37 ). The control unit ( 37 ) is constructed to determine a covered part of the exit opening ( 15 ) from measurement signals of the skin presence sensors, and to restrict emission of the radiation ( 13 ) to the covered part of the exit opening ( 15 ), e.g. by modifying the control of a radiation beam manipulator ( 11 ), or by controlling radiation blocking means, such as blinds, in the exit opening ( 15 ). The invention provides a more efficient and yet safe treatment device ( 1, 1 '), since a larger exit opening ( 15 ) may be selected, while unwanted emission of radiation ( 13 ) through uncovered parts of the exit opening ( 15 ) is yet prevented.
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