A luminaire includes a earner having a mounting surface, at least two % M-emitting diodes, each light-emitting diode having a radiation exit surface, an optical element having a radiation entrance surface, wherein the light-emitting diodes are arranged on the mounting surface of the carrier, the optical element is arranged on a side of the light-emitting diodes facing away from the carrier, and the radiation exit surface of each light-emitting diode is optically coupled to the radiaπon entrance surface of the optical element.
1. A luminaire comprising:
a flexible carrier having a mounting surface;
at least two light-emitting diodes, each light-emitting diode having a radiation exit surface;
a flexible optical element having a radiation entrance surface,
wherein
the light-emitting diodes are arranged on the mounting surface of the carrier;
the optical element is fixed to each of the light-emitting diodes and arranged solely on a side of the light-emitting diodes facing away from the carrier;
the radiation exit surface of each light-emitting diode is optically coupled to the radiation entrance surface of the optical element,
the radiation exit surface of each light-emitting diode and the radiation entrance surface of the optical element are in direct contact with each other, and
the optical element is a sole optical element of the luminaire.
2. The luminaire according to claim 1 , wherein the optical element is an extruded optical element.
3. The luminaire according to claim 1 , wherein an interface of the radiation exit surface of each light-emitting diode and the radiation entrance surface of the optical element is free of a connecting material.
4. The luminaire according to claim 1 , wherein the light-emitting diodes are arranged along a virtual curve and the optical element follows said curve.
5. The luminaire according to claim 1 , wherein the optical element has a single radiation exit surface.
6. The luminaire according to claim 1 , wherein the optical element is flexible.
7. The luminaire according to claim 1 , wherein the carrier and the optical element are flexible.
8. The luminaire according to claim 1 , wherein the optical element is a sole optical element of the luminaire.
9. The luminaire according to claim 1 , wherein each of the light-emitting diodes is free from a lens.
10. The luminaire according to claim 1 , wherein each of the light-emitting diodes is a light-emitting diode chip.
11. The luminaire according to claim 4 , wherein the optical element has a cylindrical shape, the virtual curve being the length of said cylinder.
12. The luminaire according to claim 4 , wherein the optical element has a convex radiation entrance surface and a convex radiation exit surface.
13. The luminaire according to claim 4 , wherein the virtual curve is wave-like, semi-circular, circular, helical, spiral, or a combination of these.
14. The luminaire according to claim 4 , wherein the virtual curve is a straight line and the optical element is rod-shaped and follows said straight line.
15. The luminaire according to claim 4 , wherein the optical element has a single radiation entrance surface.
16. A luminaire comprising:
a carrier having a mounting surface;
at least two light-emitting diodes, each light-emitting diode having a radiation exit surface;
an optical element having an elongated shape and a radiation entrance surface,
wherein
the light-emitting diodes are arranged on the mounting surface of the carrier and along an elongated virtual curve, the optical element following the curve;
the optical element is arranged solely on a side of the light-emitting diodes facing away from the carrier;
the radiation exit surface of each light-emitting diode is optically coupled to the radiation entrance surface of the optical element;
the radiation exit surface of each light-emitting diode and the radiation entrance surface of the optical element are in direct contact with each other;
the optical element is a solid body; and
both the carrier and the side faces of the light-emitting diode are free of material of the optical element.
17. The luminaire according to claim 1 , wherein the side of the carrier opposite to the mounting surface is freely accessible.
18. The luminaire according to claim 1 , wherein both the carrier and the side faces of the light-emitting diode are free of material of the optical element.
19. The luminaire according to claim 1 , wherein the luminaire is flexible.
20. The luminaire according to claim 11 , wherein the radiation entrance face and the radiation exit face are curved toward an inside portion of the optical element.
21. The luminaire according to claim 16 , wherein the side of the carrier opposite to the mounting surface is freely accessible.