US 9,810,403 B2
Lighting device and luminaire
Lin Wang, Eindhoven (NL)
Assigned to PHILIPS LIGHTING HOLDING B.V., Eindhoven (NL)
Appl. No. 15/117,222
Filed by PHILIPS LIGHTING HOLDING B.V., Eindhoven (NL)
PCT Filed Feb. 12, 2015, PCT No. PCT/EP2015/052936
§ 371(c)(1), (2) Date Aug. 8, 2016,
PCT Pub. No. WO2015/121337, PCT Pub. Date Aug. 20, 2015.
Claims priority of application No. PCT/CN2014/071999 (WO), filed on Feb. 12, 2014; and application No. 14163401 (EP), filed on Apr. 3, 2014.
Prior Publication US 2016/0356457 A1, Dec. 8, 2016
Int. Cl. F21V 13/04 (2006.01); F21V 5/02 (2006.01); G02B 27/30 (2006.01); F21V 5/04 (2006.01); F21V 7/00 (2006.01); G02B 3/08 (2006.01); G02B 19/00 (2006.01); F21K 9/232 (2016.01); F21V 29/10 (2015.01); F21K 9/60 (2016.01); F21Y 115/10 (2016.01)
CPC F21V 13/04 (2013.01) [F21K 9/232 (2016.08); F21V 5/02 (2013.01); F21V 5/045 (2013.01); F21V 7/0091 (2013.01); F21V 29/10 (2015.01); G02B 3/08 (2013.01); G02B 19/0028 (2013.01); G02B 19/0061 (2013.01); G02B 27/30 (2013.01); F21K 9/60 (2016.08); F21Y 2115/10 (2016.08)] 15 Claims
OG exemplary drawing
 
1. A lighting device including:
a lens comprising an annular collimating structure having a central axis of symmetry, said structure comprising a light exit surface and an intermediate region in between an inner region proximal to said axis and an outer region distal to said axis, wherein one of the inner region and outer region consists of a single prism extending from the light exit surface by a first height and the other of the inner region and outer region comprises a plurality of prisms extending from the light exit surface by a maximum second height, wherein the first height is at least the maximum second height and the intermediate region has an intermediate region surface separated from the light exit surface by a maximum further height that is smaller than the first height; and
a plurality of solid state lighting elements arranged in a circular pattern on a carrier surface such that the solid state lighting elements are aligned with and facing the intermediate region surface, wherein the plurality of solid state lighting elements is placed within or close to a cavity defined by the single prism and/or the plurality of prims; and
wherein the annular collimating structure is made of a material having a refractive index such that the intermediate region is a refractive region and the single prism and the plurality of prisms each reflect light emitted by the solid state lighting elements towards the light exit surface.