发明人：
HOELEN, CHRISTOPH, GERARD, AUGUST | KADIJK, SIMON, EME | HAENEN, LUDOVICUS, JOHANNES, LAMBERTUS | LI, YUN
摘要：
The invention provides a lighting device (1) comprising a luminescent element (5) comprising an elongated light transmissive body (100), the elongated light transmissive body (100) comprising a side face (140), wherein the elongated light transmissive body (100) comprises a luminescent material (120) configured to convert at least part of a light source light (11) selected from one or more of the UV, visible light, and IR received by the elongated light transmissive body (100) into luminescent material radiation (8).
权利要求：
CLAIMS:
1. A lighting device (1) comprising:
at least one light source (10) configured to provide light source light (11); a luminescent element (5) comprising an elongated light transmissive body (100), the elongated light transmissive body (100) comprising a side face (140), wherein: - the elongated light transmissive body (100) comprises a luminescent material
(120) configured to convert at least part of the light source light (11) selected from one or more of the UV, visible light, and IR received by the elongated light transmissive body (100) into luminescent material radiation (8);
wherein the elongated light transmissive body (100) comprises a radiation input face (111) and a first radiation exit window (112); wherein the luminescent material (120) is configured to convert at least part of the light source light (11) received at the radiation input face (111) into luminescent material radiation (8), and the luminescent element (5) being configured to couple at least part of the luminescent material radiation (8) out at the first radiation exit window (112) as converter radiation (101),
- wherein the radiation input face (111) comprises a cavity (1150) and wherein the at least one light source (10) is at least partly configured in the cavity (1150); and
wherein the elongated light transmissive body (100) comprises a protrusion (1160) and/or a second cavity, wherein the lighting device (1) further comprises a receptor element (1170) configured to host at least part of the protrusion (1160) and/or the second cavity for one or more of (i) alignment of the elongated light transmissive body (100) and (ii) thermal energy transfer from the elongated light transmissive body (100) to the receptor element (1 170).
2. The lighting device (1) according to claim 1, wherein the elongated light transmissive body (100) has a cross-sectional shape selected from the group consisting of an oval shape, a U-shape, a T-shape, an I-shape and an H-shape.
3. The lighting device (1) according to any one of the preceding claims, wherein the cavity (1150) has a volume selected from the range of 0.1-10 mm3.
4. The lighting device (1) according to any one of the preceding claims, comprising one or more of a (i) a plurality of cavities (1150) and (ii) one or more elongated cavities (1150).
5. The lighting device (1) according to any one of the preceding claims, wherein the elongated transmissive body (100) extends between a first face (141) and a second face (142), and wherein one or more of the first face (141) and the second face (142) comprise a plane (1 140) comprising surface modulations (1141) thereby creating different modulation angles (β) relative to the respective plane (1140).
6. The lighting device (1) according to any one of the preceding claims, further comprising an optical element (24) optically coupled to the elongated light transmissive body (100).
7. The lighting device (1) according to claim 6, wherein the elongated light transmissive body (100) and the optical element (24) are a single body.
8 The lighting device (1) according to any one of the preceding claims, wherein the optical element (24) is selected from the group consisting of a compound parabolic concentrator, an adapted compound parabolic concentrator, a dome, a wedge-shaped structure, and a conical structure.
9. The lighting device (1) according to any one of the preceding claims, wherein the elongated light transmissive body (100) is obtainable by a process comprising (a) one or more of extrusion, injection molding, pressing, and casting, and (b) sintering.
10. The lighting device (1) according to any one of the preceding claims, wherein the radiation exit window (112) is configured relative to the radiation input face (111) with angle larger than zero degrees.
11. The lighting device (1) according to any of the preceding claims, further comprising:
a second light source (10) configured to provide second light source light (11); a second luminescent element (5) comprising a secondn elongated light transmissive body (100), the second elongated light transmissive body (100) comprising a side face (140), wherein:
the second elongated light transmissive body (100) comprises a luminescent material (120) configured to convert at least part of the light source light (11) selected from one or more of the UV, visible light, and IR received by the elongated light transmissive body (100) into second luminescent material radiation (8);
wherein the second elongated light transmissive body (100) comprises a radiation input face (111) and a first radiation exit window (112); wherein the luminescent material (120) is configured to convert at least part of the second light source light (11) received at the radiation input face (111) into luminescent material radiation (8), and the second luminescent element (5) configured to couple at least part of the luminescent material radiation (8) out at the first radiation exit window (112) as converter radiation (101),
wherein the radiation input face (111) comprises a cavity (1150) and wherein the second light source (10) is at least partly configured in the cavity (1150), and
wherein the second luminescent material radiation is of a different wavelength range compared to the luminescent material radiation.
12. The lighting device (1) according to any one of the preceding claims, further comprising an optical element (24), wherein the optical element (24) is configured to one or more of (i) collimating the luminescent radiation (8) and (ii) extracting luminescent radiation (8) from the elongated light transmissive body (100), and wherein the optical element (24) is (a) optically coupled to the elongated light transmissive body (100), or wherein the optical element (24) and the elongated light transmissive body (100) are comprised by a single body.
13. The lighting device (1) according to any one of the preceding claims, further comprising a heat sink an average distance to the elongated light transmissive body (100) of at least 5 μιη and at maximum 20 μιη, and wherein the heat dissipating element is in physical contact with at maximum 5% of a total area of the side face(s) of the elongated light transmissive body (100).
14. The lighting device (1) according to any one of the preceding claims, wherein the light sources (10) are configured at one or more substrates, wherein the one or more substrates are configured as heat sinks or are thermally coupled with heat sinks. 15. A projection system or a luminaire comprising:
a lighting device according to any of the preceding claims, and a controller for controlling the lighting device.