Holding collimator elements in a lighting arrangement
A lighting arrangement includes a plurality of light sources in spaced arrangement. Collimator elements are arranged in front of the light sources. A holder with a plurality of spaced openings is provided to hold the collimator elements within the openings in such a way that the openings are arranged to contact the collimator elements from at least two opposed sides, In order to allow exact positioning and easy manufacturing, the holder comprises at least a first portion and a second portion such that at least some of the openings are formed between the first and the second portions.
1. A lighting arrangement, including
a plurality of light sources in spaced arrangement;
a first plurality of collimator elements in front of the light sources arranged in a first collimator element row;
a second plurality of collimator elements in front of the light sources arranged in a second collimator element row;
a lens formed in one piece with the first and second pluralities of collimator elements, the lens being configured to project collimated light as a single beam; and
a holder with a plurality of spaced openings, the first and second pluralities of collimator elements being arranged to be held within the openings, in such a way that the openings are arranged to contact the collimator elements from at least two opposed sides,
the holder comprising at least a first portion and a second portion, at least some of the openings being formed between the first and the second portion;
wherein a first group of the openings is arranged in a first opening row to receive the first collimator element row, and a second group of the openings is arranged in a second opening row to receive the second collimator element row, the second opening row being arranged at least substantially in parallel and at a distance to the first opening row, and the openings of the first and second group are arranged in offset arrangement.
2. The lighting arrangement according to claim 1 , wherein the light sources are arranged on a carrier, and the holder being fixed to the carrier.
3. The lighting arrangement according to claim 2 , wherein the holder and/or the carrier comprise positioning elements to obtain a fixed relative arrangement.
4. The lighting arrangement according to claim 1 , wherein at least the first and/or the second portion is provided with a plurality of spaced, projecting wall elements, and wherein the openings are at least partially provided between the wall elements.
5. The lighting arrangement according to claim 1 , wherein
the holder comprises a third portion, wherein a first group of openings is arranged between the first and third portions, and a second group of openings is arranged between the second and third portions.
6. The lighting arrangement according to claim 1 , wherein the holder comprises a plate portion arranged in a holding plane.
7. The lighting arrangement according to claim 1 , wherein the openings are arranged at a distance from the light sources.
8. The lighting arrangement according to claim 1 , wherein the first and second collimator elements are of elongated shape, and wherein an area of a second cross-section of the first and second collimator elements is larger than an area of a first cross-section of the first and second collimator elements, the first cross-section being arranged closer to the light sources than the second cross-section.
9. The lighting arrangement according to claim 1 , wherein the collimator elements are solid elements of a transparent material.
10. The lighting arrangement according to claim 1 , wherein the holder is arranged to hold the lens.
11. A method of manufacturing a lighting arrangement, the method comprising:
arranging a plurality of light sources in a spaced arrangement;
arranging first and second collimator element rows comprising first and second pluralities of collimator elements, respectively, in front of the light sources, all of the first and second pluralities of collimator elements being formed in one piece with a lens that is configured to project collimated light as a single beam;
arranging the first and second pluralities of collimator elements between first and second portions of a holder comprising a plurality of spaced openings being formed between the first and second portions in such a way that the openings are arranged to contact the collimator elements from at least two opposed sides;
arranging a first group of the openings in a first opening row to receive the first collimator element row, and a second group of the openings in a second opening row to receive the second collimator element row, the second opening row being arranged at least substantially in parallel and at a distance to the first opening row, and the openings of the first and second group are arranged in offset arrangement.
12. The method according to claim 11 , wherein
the holder comprises a third portion, wherein a first group of openings is arranged between the first and third portions, and a second group of openings is arranged between the second and third portions.
13. The method according to claim 11 , wherein the holder is arranged to hold the lens.