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：
DENISSEN, CORNELIS, JOHANNES, MARIA | DE BOER, DIRK, KORNELIS, GERHARDUS | JAGT, HENDRIK, JOHANNES, BOUDEWIJN | VAN DER TEMPEL, LEENDERT | BELDER, GERALD, FREDERIK | JANSEN, JOHANNES, MARTINUS
摘要：
The invention provides a lighting device (1) comprising: - one or more light sources (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 luminescent material (120) configured to convert at least part of light source light (11) received at one or more radiation input faces (111) into luminescent material light (8), and the luminescent element (5) configured to couple at least part of the luminescent material light (8) out at the first radiation exit window (112) as converter light (101); wherein the light transmissive body (100) has a first index of refraction n1; - a beam shaping optical element (224) optically coupled with the first radiation exit window (112), the beam shaping optical element comprising a radiation entrance window (211) configured to receive at least part of the converter light (101); wherein the beam shaping optical element (224) has a second index of refraction n2; wherein: - 0.75≤n1/n2≤1.25;15 - the beam shaping optical element (224) or an optical connector (300) configured between the elongated light transmissive body (100) and the beam shaping optical element (224) comprise a glass material (310), wherein the glass material (310) is based on at least one or more of bismuth oxide, boron oxide, potassium oxide, lithium oxide, phosphorus oxide, lead oxide, tin oxide, antimony oxide, tellurium oxide, silicon dioxide, and vanadium oxide.
权利要求：
CLAIMS:
1. A lighting device (1) comprising:
one or more light sources (10) configured to provide light source light (11); a luminescent element (5) comprising an elongated light transmissive body (100) having a first face (141) and a second face (142) defining a length (L) of the light transmissive body (100), the light transmissive body (100) comprising one or more radiation input faces (111) and a first radiation exit window (112), wherein the second face (142) comprises the first radiation exit window (112); the elongated light transmissive body (100) comprising a luminescent material (120) configured to convert at least part of light source light (11) received at one or more radiation input faces (111) into luminescent material light (8), and the luminescent element (5) configured to couple at least part of the luminescent material light (8) out at the first radiation exit window (112) as converter light (101); wherein the light transmissive body (100) has a first index of refraction nl;
a beam shaping optical element (224) optically coupled with the first radiation exit window (112), the beam shaping optical element comprising a radiation entrance window (211) configured to receive at least part of the converter light (101); wherein the beam shaping optical element (224) has a second index of refraction n2;
wherein:
0.75<nl/n2<1.25;
an optical connector (300) configured between the elongated light transmissive body (100) and the beam shaping optical element (224), the optical connector comprising a glass material (310), wherein the glass material (310) has a composition selected from a range defined in the ternary B2O3- Bi203_ZnO diagram by the following compositions indicating the quadrilateral corner points of the range: mol% B2O3 mol% Bi203mol% ZnO
25 mol% 7.5 mol% 67.5 mol%
80 mol% 20 mol% 0 mol%
65 mol% 35 mol% 0 mol%
22.5 mol% 20 mol% 57.5 mol%
2. The lighting device (1) according to claim 1, wherein the elongated light transmissive body (100) comprises a garnet material. 3. The lighting device (1) according to any one of the preceding claims 1-2, wherein the optical connector (300) comprises a glass frit connection (324).
4. The lighting device (1) according to any one of the preceding claims 1-2, wherein the elongated light transmissive body (100) and the beam shaping optical element (224) are associated to each other via the optical connector (300), wherein (i) the elongated light transmissive body (100) and the optical connector (300) are associated to each other with a glass frit connection (324) and (ii) the optical connector (300) and the beam shaping optical element (224) are associated to each other with a glass frit connection (324), and wherein the beam shaping optical element (224) comprises an optical element material (240) different from the glass material (310).
5. The lighting device (1) according to claim 4, wherein the one or more light sources (10) are operated in a pulsed operation with a duty cycle selected from the range of 10 - 80 %.
6. The lighting device (1) according to any one of the preceding claims, wherein the beam shaping optical element (224) comprises a compound parabolic concentrator and a mirror partially covering the light exit face of the compound parabolic concentrator. 7. The lighting device (1) according to any one of the preceding claims, wherein the light transmissive body (100) has a first coefficient of linear thermal expansion, wherein the beam shaping optical element (224) has a second coefficient of linear thermal expansion, and wherein the optical connector (300) has a third coefficient of linear thermal expansion, wherein a difference between the first coefficient of linear thermal expansion and the second coefficient is at most ± 1 ppm/K, wherein a difference between the first coefficient of linear thermal expansion and the third coefficient is at most ± 1 ppm/K, and wherein a difference between the second coefficient of linear thermal expansion and the third coefficient is at most ± 1 ppm/K.
8. The lighting device (1) according to any one of the preceding claims, wherein the glass material (310) has a third index of refraction n3, wherein if n2 < nl , then n3 > n2, wherein if n2 > nl, then n3 > nl, and wherein one or more of 0.75<nl/n3<1.25 applies. 9. The lighting device (1) according to any one of the preceding claims, wherein the beam shaping optical element (224) comprises a light concentrator, and wherein the light transmissive body (100) has a bar- like shape having a width (W) and a high (H), wherein the width (W) is equal to or smaller than 1.7 mm, and wherein the height (H) is equal to or smaller than 1.1 mm.
10. A method of producing the lighting device (1) according to any one of the preceding claims 1-9, the method comprising (i) providing the elongated light transmissive body (100), the beam shaping optical element (224), and the optical connector (300), (ii) melting at least part of the glass material (310), and associating the elongated light transmissive body (100) and the beam shaping optical element (224) with the optical connector (300) in between, (iii) providing one or more light sources (10) at one or more radiation input faces (111).
11. An image projection system comprising one or more lighting devices according to any of the preceding claims 1-9.
A luminaire comprising one or more lighting devices according to any of the claims 1-9.
13. A headlight or a taillight of a motor vehicle comprising one or more lighting devices according to any of the preceding claims 1-9.