US 10,300,297 B2
Light-emitting device and photo-therapy device comprising a light-emitting device
Jacobos Petrus Johannes Van Os, Eindhoven (NL); Tim Dekker, Eindhoven (NL); Gerrit Oversluizen, Valkenswaard (NL); Paul Marcel Carl Lemmens, Veghel (NL); Frank Anton Van Abeelen, Eindhoven (NL); and Wouter Hendrik Cornelis Spoorendonk, Enschede (NL)
Assigned to SIGNIFY HOLDING B.V., Eindhoven (NL)
Appl. No. 14/123,826
Filed by Jacobos Petrus Johannes Van Os, Eindhoven (NL); Tim Dekker, Eindhoven (NL); Gerrit Oversluizen, Valkenswaard (NL); Paul Marcel Carl Lemmens, Veghel (NL); Frank Anton Van Abeelen, Eindhoven (NL); and Wouter Hendrik Cornelis Spoorendonk, Enschede (NL)
PCT Filed Jun. 5, 2012, PCT No. PCT/IB2012/052822
§ 371(c)(1), (2), (4) Date Dec. 4, 2013,
PCT Pub. No. WO2012/172456, PCT Pub. Date Dec. 20, 2012.
Claims priority of application No. 11170450 (EP), filed on Jun. 17, 2011.
Prior Publication US 2014/0094879 A1, Apr. 3, 2014
Int. Cl. A61N 5/06 (2006.01)
CPC A61N 5/0613 (2013.01) [A61N 5/0616 (2013.01); A61N 2005/0629 (2013.01); A61N 2005/0645 (2013.01); A61N 2005/0652 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
a light-emitting module comprising a plurality of sets of light-emitting elements, wherein at least two of said sets have a different number of light-emitting elements;
a power module adapted to selectively convey electrical power to the plurality of sets during respective non-overlapping time intervals for powering the respective sets;
a control module being adapted to control the power module to convey power to the plurality of sets during respective non-overlapping time intervals until power has been conveyed to each set of the plurality of sets at least once;
wherein the power module is configured such that it has an upper capacity limit with respect to an electrical power that can be conveyed to the plurality of sets, the upper capacity limit corresponding to an electrical power requirement of a largest set, having a maximum number of light-emitting elements, of the plurality of sets at a given momenta and
wherein the plurality of sets of light-emitting elements are arranged to provide spatially interweaved sets of light-emitting elements and the control module is adapted to convey power to the plurality of sets in such an order so as to minimize average spatial separation between subsequently powered sets of the plurality of sets on basis of the interweaved arrangement of the plurality of sets relatively to each other in the light-emitting device.