Patent ID: 11873966
Assignee: ARTEMIDE S.P.A.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A Light Emitting Diode (LED) table lamp, comprising:
a lighting head extending about a central axis (A), the head comprising a body shaped as a ring about the axis (A) and provided with a substantially annular seat;
a plurality of LEDs arranged spaced apart from one another along the seat about the axis (A), and supported by a printed circuit board positioned in the seat and having a face, on which the LEDs are positioned, perpendicular to the axis (A); and
a lens positioned in front of the LEDs to close the seat;
wherein the lens comprises a monolithic piece extending about the axis (A) and having a concave annular inlet surface, facing the LEDs, and a convex annular outlet surface, substantially aligned to each other parallel to the axis (A) and extending about the axis (A), the monolithic piece comprising a pair of lateral walls facing each other and projecting from the inlet surface in the seat, the lateral walls being cylindrical about the axis (A), the LEDs being positioned between the lateral walls and being spaced apart from the inlet surface and from the lateral walls;
wherein the inlet surface and the outlet surface are shaped so as to generate a rotationally symmetric light emission about the axis (A); and
wherein the inlet surface has a radius of curvature greater than a radius of curvature of the outlet surface, a ratio between the radius of curvature of the inlet surface and the radius of curvature of the outlet surface being at least 3:1.