Light source, reflection luminaire and automotive headlamp
A light source ( 210, 310 ) for a reflection luminaire, a reflection luminaire ( 200, 300 ) for an automobile and an automotive headlamp comprising the reflection luminaire ( 200, 300 ) are disclosed. The light source ( 210, 310 ) comprises a substrate ( 212 ), and a light emitting component ( 214 ), being a Chip Scale Package light emitting diode, and a light absorbing component ( 216 ) on the substrate ( 212 ). The light absorbing component ( 216 ) is configured to absorb light which is emitted from a side surface of the light emitting component ( 214 ) and incident on a surface of the substrate ( 212 ). The light source facilitates reducing or eliminating glare of a CSP LED reflection luminaire for an automobile.
1. A light source for a reflection luminaire, comprising
a substrate,
a light emitting component having a first surface, an oppositely positioned second surface, side surfaces connecting the first and second surfaces, and a thickness perpendicular to the first surface, the light emitting component comprising a light emitting diode, and
a light absorbing component on a surface of the substrate, the light absorbing component configured to absorb light emitted from one or more of the side surfaces of the light emitting component, an orthogonal projection of the light absorbing component on the surface of the substrate comprising
a portion surrounding and adjacent to an orthogonal projection of the light emitting component on the surface of the substrate, and
a width 2 to 3 times the thickness of the light emitting component.
2. The light source of claim 1 , wherein the substrate is a printed circuit board (PCB), and the light absorbing component is a silk screen region on the printed circuit board.
3. The light source of claim 1 , wherein the light absorbing component and the light emitting component are stacked on the surface of the substrate in this order.
4. The light source of claim 1 , wherein the surface of the substrate comprises a recessed portion, and the light absorbing component is accommodated in the recessed portion.
5. The light source of claim 1 , wherein the orthogonal projection of the light emitting component on the surface of the substrate falls within the orthogonal projection of the light absorbing component on the surface of the substrate.
6. The light source of claim 1 , wherein the orthogonal projection of the light emitting component on the surface of the substrate is surrounded by and adjacent to the orthogonal projection of the light absorbing component on the surface of the substrate.
7. The light source of claim 1 , wherein the width of the orthogonal projection of the light absorbing component has a value in a range of 0.8 mm-1.2 mm.
8. The light source of claim 7 , wherein the width of the orthogonal projection of the light absorbing component has a value of 1 mm.
9. A reflection luminaire for an automobile, comprising the light source of claim 1 , a first light directing component and a second light directing component,
wherein the first light directing component is configured to receive light from the light source and project the light onto the second light directing component, and
wherein the second light directing component is configured to project the light projected by the first light directing component to a side of the second light directing component away from the first light directing component.
10. The reflection luminaire of claim 9 , wherein the first light directing component comprises an ellipsoidal reflective bowl or a collimator.
11. The reflection luminaire of claim 9 , wherein the second light directing component comprises an aspheric lens.
12. An automotive headlamp, comprising the reflection luminaire of claim 9 .
13. The light source of claim 1 , wherein the light emitting component is a Chip Scale Package light emitting diode.