LIGHT FIXTURE

• US 20100165623A1
• Filed: 12/16/2009
• Published: 07/01/2010
• Est. Priority Date: 12/30/2008
• Status: Active Grant

• Current Assignee: ERCO GmbH (Maack GmbH)
• Original Assignee: ERCO GmbH (Maack GmbH)
• Inventors: Bremerich, Matthias, Goerres, Markus
• Granted Patent: US 9,494,292 B2
• Time in Patent Office: Days
• US Class Current: 362/235
• CPC Class Codes: F21V 13/04 the elements being reflectors and refractors for vehicle rear lights F21S43/40
• CPC Class Codes: F21V 17/002 with provision for interchangeability, i.e. component parts being especially adapted to be replaced by another part with the same or a different function F21V17/10 takes precedence
• CPC Class Codes: F21V 5/002 using microoptical elements for redirecting or diffusing light
• CPC Class Codes: F21V 5/007 Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane combination of two or more refractors F21V5/008
• CPC Class Codes: F21V 5/008 Combination of two or more successive refractors along an optical axis
• CPC Class Codes: F21W 2131/10 Outdoor lighting
• CPC Class Codes: F21W 2131/107 of the exterior of buildings
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

The invention shows and describes, among others, a light fixture (10) for illuminating building surfaces, comprising a circuit board (11) on which a plurality of LEDs (12a, 12b, 12c) are mounted, secondary optics (14) that bundle the light emitted by the LEDs, and tertiary optics (16) formed by a planar, translucent element that has light-directing microstructures.

Claims

1. A light fixture for illuminating building surfaces, the fixture comprising

a circuit board on which a plurality of LEDs are mounted,

secondary optics that bundle the light emitted by the LEDs, and

tertiary optics formed by a planar, translucent element having light-directing microstructures.

2. The light fixture according to claim 1, wherein the microstructures are facets.

3. The light fixture according to claim 2, wherein at least some of the facets have a concave surface.

4. The light fixture according to claim 3, wherein the surface is spherically curved.

5. The light fixture according to claim 3 wherein the surface is aspherically curved.

6. The light fixture according to claim 3 to wherein the surface is cylindrically curved.

7. The light fixture according to claim 3 wherein the surface is a rotational paraboloid.

8. The light fixture according to claim 2 wherein at least some of the facets have a planar surface.

9. The light fixture according to claim 1 wherein the microstructures are provided on a face of the element turned toward the secondary optics.

10. The light fixture according to claim 1 wherein the microstructures are provided on a face of the element directed away from the secondary optics.

11. The light fixture according to claim 1 wherein the element is at a spacing from the secondary optics.

12. The light fixture according to claim 1 wherein the secondary optics directs substantially parallel light beams against the tertiary optics.

13. The light fixture according to claim 1 wherein the element is formed by a planar plate.

14. The light fixture according to claim 1 wherein the element is concave.

15. The light fixture according to claim 1 wherein the element comprises a plurality of sections having different light-technical behaviors.

16. The light fixture according to claim 1 wherein the light fixture is mounted in a locally fixed manner.

17. The light fixture according to claim 1 wherein the circuit board, the secondary optics, and optionally the tertiary optics are provided within a fixture housing.

18. The light fixture according to claim 1 wherein the tertiary optics are provided in a light-output opening of the light fixture in the manner of a light fixture cover glass piece.

19. The light fixture according to claim 1 wherein the tertiary optics can be mounted on a fixture housing via fasteners.

20. A modular system for light fixtures for illuminating building surfaces, the system comprising

a circuit board on which a plurality of LEDs are mounted,

secondary optics that bundle the light emitted by the LEDs, and

first tertiary optics of a predetermined construction shape and formed by a planar, translucent element having light-directing microstructures of a first type,

second tertiary optics of the same construction shape being provided that are formed by a planar, translucent element having light-directing microstructures of a second type, the first tertiary optics be exchangeable with the second tertiary optics, the microstructures of the second type enabling radiation characteristic of the light fixture that are different is from those of the microstructures of the first type.

21. The modular system according to claim 20, wherein the microstructures of the first type comprise facets having light-directing surfaces of a first type, and the microstructures of the second type comprise facets have light-directing surfaces of a second type.

22. The modular system according to claim 20, wherein the first tertiary optics enable light radiation from the light fixture at a first radiation angle, and the second tertiary optics enable light radiation at a second radiation angle that is different from the first radiation angle.

23. A modular system for light fixtures for illuminating building surfaces, the system comprising

at least one light source

a first planar, translucent element of a predetermined construction shape that can be provided in the light path of the light emitted by the light source and that has light-directing microstructures of a first type,

a second planar, translucent element of the same construction shape being provided that can be provided in the light path of the light emitted by the light source and that has light-directing microstructures of a second type, wherein the first element can be exchanged with the second element, and wherein the microstructures of the second type enable a radiation characteristic of the light fixture that different from that of the microstructures of the first type.