Patent ID: 10775635

Abstract:
The invention provides a lighting device (1) lighting device (10) comprising: (I) a first light source (110) configured to provide first light source light (101); (II) a luminescent material (200) configured to convert at least part of the first light source light (101) into luminescent material light (201); (III) a beam shaping optical element (300) having a light entrance side (341) and a light exit side (342), and a wall (347) bridging a distance between the light entrance side (341) and the light exit side (342), wherein at least part of the wall (347) is reflective for the luminescent material light (201), wherein the beam shaping optical element (300) is configured to receive at least part of the luminescent material light (201) at the light entrance side (341) and to provide beam shaped luminescent material light (201) at the light exit side (342); (IV) 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), and having one or more side faces (147) bridging the length (L) between the first face (141) and the second face (142), the light transmissive body (100) comprising a radiation input face (111) and a first radiation exit window (112), wherein the first face (141) comprises the radiation input face (111) and wherein the second face (142) comprises the first radiation exit window (112), wherein the radiation input face (111) is configured to receive at least part of the beam shaped light luminescent material light (201); (V) a second light source (120) configured to provide second light source light (121); wherein the elongated light transmissive body (100) is configured to receive at least part of the second light source light (121) via one or more of (i) incoupling of the second light source light (121) via the wall (347) of the beam shaping optical element (300), (ii) incoupling of the second light source light (121) via part of the first face (141) of the elongated light transmissive body (100), and (iii) incoupling of the second light source light (121) via part of the of the one or more side faces (147) of the elongated light transmissive body (100).