摘要：
The invention provides a light generating system (1000) comprising: - a plurality of k light sources (10) configured to provide light source light (11), wherein k is a natural number of at least 5, wherein the light sources (10) are configured in an array (15), wherein the light sources (10) have inter-light source distances (d1); - an elongated luminescent body (100) having a length (L), the elongated luminescent body comprising one or more side faces (140), the elongated luminescent body (100) comprising a radiation input face (111) and a radiation exit window (112), wherein the radiation input face (111) is configured in a light receiving relationship with the plurality of light sources (10), wherein the elongated luminescent body (100) comprises luminescent material (120) configured to convert at least part of light source light (11) into luminescent material light (8), wherein the radiation exit window (112) has an angle (α) unequal to 0° and unequal to 180° with the radiation input face (111); - a body holder structure (2000), wherein the body holder structure (2000) comprises an elongated slit (205) for hosting the elongated luminescent body (100), wherein the elongated slit (205) comprises one or more slit side faces (2140); - n force applying elements (1300) configured to keep the elongated body (100) pushed against at least one of the one or more slit side faces (2140) of the elongated slit (205), wherein n is a natural number selected from the range of 0.01*L/mm-0.05*L/mm, wherein the length (L) is in mm, wherein n is at least 1, and wherein the inter-light source distance (d1) at the n force applying elements (1300) is larger than an average inter-light source distance (d1).
权利要求：
1. A light generating system (1000) comprising: - a plurality of k light sources (10) configured to provide light source light (11), wherein k is a natural number of at least 5, wherein the light sources (10) are configured in an array (15), wherein the light sources (10) have inter-light source distances (d1); - an elongated luminescent body (100) having a length (L), the elongated luminescent body comprising one or more side faces (140), the elongated luminescent body (100) comprising a radiation input face (111) and a radiation exit window (112), wherein the radiation input face (111) is configured in a light receiving relationship with the plurality of light sources (10), wherein the elongated luminescent body (100) comprises luminescent material (120) configured to convert at least part of light source light (11) into luminescent material light (8), wherein the radiation exit window (112) has an angle (α) unequal to 0° and unequal to 180° with the radiation input face (111); - a body holder structure (2000), wherein the body holder structure (2000) comprises an elongated slit (205) for hosting the elongated luminescent body (100), wherein the elongated slit (205) comprises one or more slit side faces (2140); - n force applying elements (1300) configured to keep the elongated body (100) pushed against at least one of the one or more slit side faces (2140) of the elongated slit (205), wherein n is a natural number selected from the range of 0.01∗L/mm-0.05∗L/mm, wherein the length (L) is in mm, wherein n is at least 1, characterized in that the inter-light source distance (d2 ) at the n force applying elements (1300) is larger than an average inter-light source distance (d1), - and that the n force applying elements (1300) are configured to exert a force selected from the range of 1-10 N.
2. The light generating system (1000) according to claim 1, wherein the n force applying elements (1300) comprise n spring elements (300).
3. The light generating system (1000) according to claim 2, wherein the n spring elements (300) comprises a single wire spring.
4. The light generating system (1000) according to any one of the preceding claims, wherein the n force applying elements (1300) are configured to exert a force selected from the range of 2-6 N.
5. The light generating system (1000) according to any one of the preceding claims, wherein the length (L) is selected from the range of 10-200 mm, and wherein n is selected from the range of 2-3.
6. The light generating system (1000) according to any one of the preceding claims, wherein the plurality of k light sources (10) are arranged in an array (15) parallel to the length (L) of the elongated luminescent body (100), wherein the n force applying elements (1300) spatially divide the plurality of k light sources (10) in n+1 subsets (110), wherein k is at least 5∗n.
7. The light generating system (1000) according to claim 6, wherein at least two of the n+1 subsets (110) do not contain the same number of light sources (10).
8. The light generating system (1000) according to claim 7, wherein n=2, and wherein the numbers of light sources (10) in the three subsets (110) are a:b:c, wherein a, b, c are natural numbers, wherein a+b+c=k, a≥1, b≥1, c≥1, wherein 1.5≤b/a≤5, wherein 1.5≤b/c≤5, and wherein 0.75≤a/c≤1.25.
9. The light generating system (1000) according to claim 8, wherein 2≤b/a≤3, wherein 2≤b/c≤3, and wherein 0.9≤a/c≤1.1.
10. The light generating system (1000) according to any one of the preceding claims 7-9, wherein n≥2, and wherein two or more of the n force applying elements (1300) are configured to exert mutually different forces.
11. The light generating system (1000) according to claim 10, wherein n=2, and wherein the mutually different forces have a ratio of the smaller force to the larger force selected from the range of 0.5-0.9.
12. The light generating system (1000) according to any one of the preceding claims 6-11, wherein the n force applying elements (1300) spatially divide the plurality of k light sources (10) in n+1 subsets (110), wherein n≥2, wherein the light sources (10) are configured to provide an even irradiance to the radiation input face (111), but wherein two or more respective areas of the n+1 subsets (110) have different sizes, and wherein in the case of n=2, the respective areas have an area ratio of x:y:z, wherein x, y, z are rational numbers, wherein x≥0, y≥0, z≥0, wherein 1.5≤y/x≤5, wherein 1.5≤y/z≤5, and wherein 0.75≤x/z≤1.25.
13. The light generating system (1000) according to any one of the preceding claims, wherein the elongated luminescent body (100) comprises a first face (141) and a second face (142) defining the length (L) of the elongated luminescent body (100), wherein the second face (142) comprises the radiation exit window (112), wherein the elongated luminescent body (100) comprises a plurality of N side faces (140), and wherein the elongated slit (205) comprises N-1 slit side faces (2140), wherein one or more of the side faces (140) are in thermal contact with one or more of the slit side faces (2140), wherein a side face (140) in thermal contact with a slit side face (2140) is configured at a first average distance (d11) of at least 1 µm from the slid side face (2140), and at maximum 20 µm.
14. The light generating system (1000) according to any one of the preceding claims 12-13, wherein the one or more of the slit side faces (2140) being in thermal contact with one or more of the side faces (140) comprise one or more reflectors (2100) being reflective for at least part of the light source light (11), and wherein at least a slit side face (2140) configured opposite of the light sources (10), with the elongated luminescent body (100) configured between that slit side face (2140) and the light sources (10), comprises a reflector (2100), and wherein the body holder structure (2000) comprises one or more heat transfer elements (200) for guiding away heat from the elongated luminescent body (100), and comprising one or more second heat transfer elements (1200) for guiding away heat from the plurality of light sources (10).
15. A projection system or a luminaire comprising a light generating system (1000) according to any one of the preceding claims.