IPC分类号：
F21V8/00 | F21K9/61 | F21K9/64 | F21Y103/10 | F21Y115/10
国民经济行业分类号：
C4350 | C3874 | C4090 | C3879
当前申请(专利权)人：
SIGNIFY HOLDING B.V.
原始申请(专利权)人：
SIGNIFY HOLDING B.V.
当前申请(专利权)人地址：
High Tech Campus 48,5656 AE Eindhoven NL
发明人：
ANTONIS, PETRUS, HENDRIKUS | HAENEN, LUDOVICUS, JOHANNES, LAMBERTUS | VANPOUCKE, PETER | MOS, BARRY | HOELEN, CHRISTOPH, GERARD, AUGUST | BRULS, DOMINIQUE, MARIA | KADIJK, SIMON, EME | YUN, LI
代理人：
MALLENS, ERIK, PETRUS, JOHANNES ET AL.
摘要：
The invention provides a light generating system (1000), comprising a plurality of light sources (10), an elongated luminescent body (100), and a body holder structure (2000), wherein: - the plurality of light sources (10) are configured to provide light source light (11), wherein the light sources (10) are solid state light sources, wherein the plurality of light sources (10) are configured in a light source array (15); - the elongated luminescent body (100) has a length (L) and a width (W), 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 elongated luminescent body (100) and the light source array (15) are configured parallel; - the body holder structure (2000) comprises an elongated slit (205) for hosting the elongated luminescent body (100), wherein the elongated slit (205) has a cavity wall (1205) defining the elongated slit (205) and a slit opening (1206), wherein the slit opening (1206) has a slit opening width (WS1), wherein the cavity wall (1205) and the elongated luminescent body (100) have first shortest distances (d11) that vary over the cavity wall (1205), wherein at least part of the cavity wall (1205) is reflective for light source light (11); - the light sources (10) are configured at second shortest distances (d21) from the elongated luminescent body (100), wherein the second shortest distance (d21) is selected from the range of 40-1000 µm, and wherein one or more of the plurality of light sources (10) are configured to irradiate with the light source light (11) the elongated luminescent body (100) both (i) directly and (ii) indirectly via the cavity wall (1205).
技术问题语段：
The technical problem addressed in this patent is the improvement of light coupling in a light generating system, particularly in a high brightness light source for various applications such as stage-lighting, microscopy, and endoscopy. The patent describes a system that uses a ceramic rod with a luminescent material doped with fluorescent material, which is optically pumped by LEDs to create a high intensity source for theatre lighting and other applications. The patent also discusses a method for improving the efficiency of the system by trapping and guiding the converted light from the rod using a reflective structure and a high refractive index garnet. Additionally, the patent describes a high lumen density system that includes a rod holder for mechanical fixation and cooling.
技术功效语段：
The patent describes a new light generating system that uses a luminescent rod to improve the coupling of light. The system includes a high brightness light source that can be used for various applications such as stage-lighting and microscopy. The system uses a ceramic rod that is clamped by metal rod holders for better optical efficiency and cooling. The technical effect of the invention is to improve the brightness and efficiency of light generation.
权利要求：
CLAIMS:
1. A light generating system (1000) comprising a plurality of light sources (10), an elongated luminescent body (100), and a body holder structure (2000), wherein:
the plurality of light sources (10) are configured to provide light source light (11), wherein the light sources (10) are solid state light sources, wherein the plurality of light sources (10) are configured in a light source array (15);
the elongated luminescent body (100) has a length (L) and a width (W), 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);
the body holder structure (2000) comprises an elongated slit (205) for hosting the elongated luminescent body (100), wherein the elongated slit (205) has a cavity wall (1205) defining the elongated slit (205) and a slit opening (1206), wherein the slit opening (1206) has a slit opening width (WS1), wherein WS1>1.05*W, wherein the cavity wall (1205) and the elongated luminescent body (100) have first shortest distances (dl 1) that vary over the cavity wall (1205), wherein at least part of the cavity wall (1205) is reflective for light source light (11);
the light sources (10) are configured at second shortest distances (d21) from the elongated luminescent body (100), and wherein one or more of the plurality of light sources (10) are configured to irradiate with the light source light (11) the elongated luminescent body (100) both (i) directly and (ii) indirectly via the cavity wall (1205),
wherein the elongated slit (205) has a second slit width (WS2) at a slit end (1207) most remote from the slit opening (1206), wherein the slit opening (1206) and the slit end (1207) are bridged by cavity wall parts (2131,2132), wherein the second slit width (WS2) at the slit end (1207) is smaller than the slit opening width (WS1), wherein WS1/WS2 is at least 1.1,
wherein the cavity wall parts comprise first parts that are configured conformal to part of the elongated luminescent body at first shortest distances (dl 1) selected from the range of < 100 pm, wherein the first parts are configured closer to the slit end than to the slit opening, and
wherein the slit end (1207) is in thermal contact with the elongated luminescent body (100).
2. The light generating system (1000) according to claim 1, wherein:
the elongated luminescent body comprises one or more side faces (140), wherein the elongated luminescent body (100) comprises 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 radiation exit window (112) has an angle (a) unequal to 0° and unequal to 180° with the radiation input face (111), and wherein the one or more of the plurality of light sources (10) are configured to irradiate with the light source light (11) both (i) the radiation input face (111) of the elongated luminescent body (100) directly and (ii) another part of the one or more side faces (140) indirectly via the cavity wall (1205); and wherein the elongated luminescent body (100) and the light source array (15) are configured parallel.
3. The light generating system (1000) according to any one of the preceding claims, wherein the light source array (15) has a light source array axis (AA), wherein the light sources (10) in the light source array (15) have a largest edge-to-edge width (WL2) perpendicular to the light source array axis (AA), wherein the edge-to-edge width (WL2) is larger than the width (W) of the elongated luminescent body (100) and equal to or smaller than the slit opening width (WS1), and wherein the second shortest distance (d21) is selected from the range of 10-500 pm.
4. The light generating system (1000) according to claim 3, wherein the cavity wall parts (2131,2132) are straight and configured slanted, having a slant angle (b) relative to the elongated luminescent body (100) selected from the range of 15-45°.
5. The light generating system (1000) according to claim 4, wherein the slant angle (b) is selected from the range of 20-40°.
6. The light generating system (1000) according to claim 3, wherein the cavity wall parts (2131,2132) are curved, tapering in a direction from the slit opening (1206) to the slit end (1207).
7. The light generating system (1000) according to claim 6, wherein the cavity wall parts (2131,2132) have the shape of a Bezier curve.
8. The light generating system (1000) according to claim 3, wherein the cavity wall parts (2131,2132) comprise second parts (21312,21322), configured closer to the slit opening (1206) than to the slit end (1207), wherein the second parts (21312,21322) taper in a direction from the slit opening (1206) to the first parts (21311,21321).
9. The light generating system (1000) according to any one of the preceding claims, wherein the slit opening width (WS1) and the width (W) of the elongated luminescent body (100) have a ratio selected from the range of 1.1<WS1/W<5.
10. The light generating system (1000) according to any one of the preceding claims, further comprising n force applying elements (1300) configured to keep the elongated body (100) in the elongated slit (205), wherein n is a natural number of at least 1.
11. The light generating system (1000) according to claim 10, wherein the n force applying elements (1300) comprise n spring elements (300), and wherein n is selected from the range of 2-4.
12. The light generating system (1000) according to any one of the preceding claims, 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).
13. The light generating system (1000) according to any one of the preceding claims, wherein the elongated slit (205) further comprises a cavity wall (1208) that is conformal with the side wall of the luminescent body (100) facing the cavity wall (1208).
14. The light generating system (1000) according to claim 13, wherein an outer surface area of the luminescent body (100) in the range of 40 - 60 % is conformal with the cavity walls (2131,2132, 2133) of the elongated slit (205).
15. A projection system or a luminaire comprising the system (1000) according to any one of the preceding claims.