Illumination arrangement, multiple light module, luminaire and use thereof

• US 8,579,464 B2
• Filed: 11/08/2011
• Issued: 11/12/2013
• Est. Priority Date: 01/17/2007
• Status: Expired due to Fees

• Current Assignee: OSRAM GmbH (Ams-Osram AG)
• Original Assignee: OSRAM GmbH (Ams-Osram AG)
• Inventors: Schroll, Katrin
• Primary Examiner(s): McManmon, Mary
• Application Number:
  US13/291,337
• Publication Number:
  US 20120051043A1
• Time in Patent Office: 735 Days
• Field of Search: 362/219, 362/222, 362/223, 362/231, 362/236, 362240-243, 362/246, 362/246.02, 362/296.04, 362/298, 362/311.02, 362/311.06, 362/311.1, 362/311.14, 362/471, 362/555, 362/558, 362/346, 362/342, 362/612, 362/249.02
• US Class Current: 362/222
• CPC Class Codes: B60Q 3/43 General lighting
• CPC Class Codes: F21K 9/69 Details of refractors forming part of the light source
• CPC Class Codes: F21V 3/04 characterised by materials, surface treatments or coatings
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48247 connecting the wire to a bond pad of the item
• CPC Class Codes: H01L 2224/73265 Layer and wire connectors
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2933/0091 Scattering means in or on the semiconductor body or semiconductor body package H01L33/22 takes precedence
• CPC Class Codes: H01L 33/58 Optical field-shaping elements
• CPC Class Codes: H01L 33/60 Reflective elements

Abstract

An illumination arrangement comprising a plurality of light-emitting semiconductor components (1), arranged in a row, a diffuser (2), which is illuminated by the light-emitting semiconductor components during operation of the illumination arrangement, intermixes light emitted by the semiconductor components during operation and has a light coupling-out area (200) remote from the semiconductor components, and two mutually opposite, reflective longitudinal side faces (3), between which the row of light-emitting semiconductor components is arranged, which run perpendicular or obliquely with respect to the light coupling-out area, and which reflect at least part of the light emitted by the light-emitting semiconductor components during operation in the direction toward the light coupling-out area.

Claims

1. An illumination arrangement comprising:

a plurality of light-emitting semiconductor components, arranged in a row;

a diffuser which is illuminated by the light-emitting semiconductor components during operation of the illumination arrangement, scatters light emitted by the semiconductor components during operation and has a light coupling-out area remote from the semiconductor components;

two mutually opposite, reflective longitudinal side faces, between which the row of light-emitting semiconductor components is arranged, which run perpendicular or obliquely with respect to the light coupling-out area, and which reflect at least part of the light emitted by the light-emitting semiconductor components during operation in the direction toward the light coupling-out area,

wherein at least one of the light-emitting semiconductor components has an optical device having a radiation exit area having a concavely curved partial region and a convexly curved partial region which at least partly surrounds the concavely curved partial region;

wherein at at least one end of the row of light-emitting semiconductor components, a transverse side face which is illuminated during operation at least by the light-emitting semiconductor component arranged at the end of the row and which is intentionally formed such that it is absorbent for a light emitted by the semiconductor component, such that it reflects 5% or less of the light which is emitted by the semiconductor components and impinges on said side face;

wherein the transverse side faces, the longitudinal side faces, the diffuser, and a carrier form a luminous box with an interior space in which the light-emitting semiconductor components are arranged;

wherein the diffuser is arranged on the top side of the luminous box opposite the carrier;

wherein the light-emitting semiconductor components are arranged on the carrier; and

wherein light is emitted from the illumination arrangement through the light coupling-out area of the diffuser.

2. The illumination arrangement as claimed in claim 1, wherein the optical device has an optical axis and the optical axis runs through the concavely curved partial region of the radiation exit area.

3. The illumination device as claimed in claim 2, wherein light is emitted from the radiation exit surface along the optical axis and at an angle to the optical axis.

4. The illumination arrangement as claimed in claim 2, wherein the concavely curved partial region has a tangent at its intersection point with the optical axis which tangent is perpendicular to the optical axis.

5. The illumination arrangement as claimed in claim 2, wherein the radiation exit area is embodied rotationally symmetrically with respect to the optical axis.

6. The illumination arrangement as claimed in claim 1, wherein the radiation exit area is a smooth surface free of edges.

7. The illumination arrangement as claimed in claim 6, wherein the radiation exit surface is a curved surface.

8. The illumination device as claimed in claim 1, wherein the optical device has a planar radiation entrance surface on the opposite side of the radiation exit surface.

9. The illumination device as claimed in claim 1, wherein the concavely curved partial region and the convexly curved partial region are formed such that each two arbitrary light rays emerging from the optical device at the radiation exit area proceed without intersecting each other.

10. The illumination device as claimed in claim 1, wherein the optical device is formed such that beam guidance in the optical device is effected in a manner free of total reflection.

11. The illumination arrangement as claimed in claim 1, in which the longitudinal side faces have a reflectance of 90% or more.

12. The illumination arrangement as claimed in claim 1, in which a first one of the light-emitting semiconductor components emits light having a first spectral distribution during operation, and a second one of the light-emitting semiconductor components, which is proximate to the first semiconductor component, emits light having a second spectral distribution, which is different from the first spectral distribution, during operation.

13. The illumination arrangement as claimed in claim 12, wherein light from a plurality of the light-emitting semiconductor components which emit light having different spectral distributions, is superimposed on the diffuser by means of the optical device.

14. The illumination arrangement as claimed in claim 1, which comprises at least one group of four light-emitting semiconductor components succeeding one another along the row, one of the semiconductor components of the group in each case emitting red, green, blue and white light, respectively.

15. The illumination arrangement as claimed in claim 1, comprising an absorber having the absorbent transverse side face, the absorber being produced from a black material or a black material composition or being provided with such a material/material composition.

16. The illumination arrangement as claimed in claim 1, in which the longitudinal side face is provided with an absorbent material or an absorbent material composition in an edge region, the absorbent material or the absorbent material composition being applied in the form of a plurality of absorbent structural units.

17. The illumination arrangement as claimed in claim 1, which has a beam shaping device disposed downstream of the light coupling-out area.

18. The illumination arrangement as claimed in claim 17, in which the beam shaping device has a cylinder- or cylinder-segment-shaped geometry, the center axis of the cylinder running parallel to the light coupling-out area and to the row of light-emitting semiconductor components.

19. The illumination arrangement as claimed in claim 18, in which the beam shaping device alters the angular distribution of the radiation emitted by the light coupling-out area.

20. The illumination arrangement as claimed in claim 1, wherein the light coupling-out area of the illumination arrangement has a Lambertian intensity distribution.

21. The illumination arrangement as claimed in claim 1, wherein at least one of the distance between the longitudinal side faces and the distance between the transverse side faces increases in a direction from the carrier toward the light coupling-out area.

22. The illumination arrangement as claimed in claim 1, wherein the transverse side faces are printed with a material containing a black dye, blackened with carbon black, or have an absorbent film adhesively bonded thereto.

23. An illumination arrangement comprising:

a plurality of light-emitting semiconductor components, arranged in a row;

a diffuser which is illuminated by the light-emitting semiconductor components during operation of the illumination arrangement, scatters light emitted by the semiconductor components during operation and has a light coupling-out area remote from the semiconductor components;

two mutually opposite, reflective longitudinal side faces, between which the row of light-emitting semiconductor components is arranged, which run perpendicular or obliquely with respect to the light coupling-out area, and which reflect at least part of the light emitted by the light-emitting semiconductor components during operation in the direction toward the light coupling-out area,

wherein at least one of the light-emitting semiconductor components has an optical device having a radiation exit area having a concavely curved partial region and a convexly curved partial region which at least partly surrounds the concavely curved partial region;

the radiation exit area is a smooth surface free of edges and the concavely curved partial region has a tangent at its intersection point with the optical axis which tangent is perpendicular to the optical axis, such that light is emitted from the radiation exit surface along the optical axis and at an angle to the optical axis;

wherein light from a plurality of the light-emitting semiconductor components is superimposed on the diffuser by means of the optical device;

wherein at at least one end of the row of light-emitting semiconductor components, a transverse side face which is illuminated during operation at least by the light-emitting semiconductor component arranged at the end of the row and which is intentionally formed such that it is absorbent for a light emitted by the semiconductor component, such that it reflects 5% or less of the light which is emitted by the semiconductor components and impinges on said side face;

wherein the transverse side faces, the longitudinal side faces, the diffuser, and a carrier form a luminous box with an interior space in which the light-emitting semiconductor components are arranged;

wherein the diffuser is arranged on the top side of the luminous box opposite the carrier;

wherein the light-emitting semiconductor components are arranged on the carrier; and

wherein light is emitted from the illumination arrangement through the light coupling-out area of the diffuser.

24. An illumination arrangement comprising:

a plurality of light-emitting semiconductor components, arranged in a row;

a diffuser which is illuminated by the light-emitting semiconductor components during operation of the illumination arrangement, scatters light emitted by the semiconductor components during operation and has a light coupling-out area remote from the semiconductor components;

two mutually opposite, reflective longitudinal side faces, between which the row of light-emitting semiconductor components is arranged, which run perpendicular or obliquely with respect to the light coupling-out area, and which reflect at least part of the light emitted by the light-emitting semiconductor components during operation in the direction toward the light coupling-out area;

a beam shaping device disposed downstream of the light coupling-out area,

wherein the beam shaping device has a cylinder-segment-shaped geometry, the center axis of the cylinder running parallel to the light coupling-out area and to the row of light-emitting semiconductor components, and

wherein the beam shaping device is configured for rotating a main emission direction of the light emitted by the light coupling-out area;

wherein at at least one end of the row of light-emitting semiconductor components, a transverse side face which is illuminated during operation at least by the light-emitting semiconductor component arranged at the end of the row and which is intentionally formed such that it is absorbent for a light emitted by the semiconductor component, such that it reflects 5% or less of the light which is emitted by the semiconductor components and impinges on said side face;

wherein the transverse side faces, the longitudinal side faces, the diffuser, and a carrier form a luminous box with an interior space in which the light-emitting semiconductor components are arranged;

wherein the diffuser is arranged on the top side of the luminous box opposite the carrier;

wherein the light-emitting semiconductor components are arranged on the carrier; and

wherein light is emitted from the illumination arrangement through the light coupling-out area of the diffuser.

25. The illumination arrangement as claimed in claim 24, wherein the beam shaping device has a first mirror having the shape of a section of the circumferential surface of the cylinder and a second mirror having a planar shape.

26. The illumination arrangement as claimed in claim 25, wherein the first mirror extends one of the side faces and the second mirror runs parallel to the light coupling-out area and is arranged at least partly laterally beside the light coupling-out area.