Optic panel, LED lighting system, and luminaire

• US 9,927,080 B2
• Filed: 09/10/2015
• Issued: 03/27/2018
• Est. Priority Date: 09/10/2015
• Status: Active Grant

• Current Assignee: Kenall Manufacturing Company (Legrand SA)
• Original Assignee: Kenall Manufacturing Company (Legrand SA)
• Inventors: Dahlen, Kevin, Akiyama, Steven, Tidd, Megan
• Primary Examiner(s): Breval, Elmito
• Application Number:
  US14/850,290
• Publication Number:
  US 20170075059A1
• Time in Patent Office: 929 Days
• CPC Class Codes: F21S 8/043 mounted by means of a rigid support, e.g. bracket or arm
• 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 7/0091 using total internal reflection
• CPC Class Codes: F21Y 2101/00 Point-like light sources
• 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

An optic panel, an LED lighting system including the optic panel, and a luminaire including the LED lighting system are described. The optic panel includes an optic disposed within a cut out of a base plate, and one or more supports fixedly couple the optic with the base plate. Each support preferably touches the optic at only a single location. In some aspects, the supports provide sufficient support to the optic such that the entire optic panel can be molded as a single, monolithic mass and the supports do not or only minimally interfere with the desired total internal reflection of the optics because of the minimal engagement with the supports and/or the placement of the engagement with the supports. The optic panel may be incorporated into the LED lighting system, for example, forming a secondary optics for the LED lighting system.

Claims

1. A luminaire, comprising

a housing;

an LED lighting system carried by the housing; and

a driver to drive the LED lighting system from an electrical power source;

wherein the LED lighting system further comprises;

a light emitting diode;

a primary optic coupled to the light emitting diode to receive and transmit light from the light emitting diode; and

a secondary optic panel having a secondary optic that covers the primary optic to receive light transmitted from the primary optic and transmit the light, wherein the secondary optic panel comprises;

a base plate having a cutout, wherein the base plate fixes the secondary optic over the primary optic;

the secondary optic disposed in the cutout and coupled to the base plate, the secondary optic comprising a collector and a light pipe extending upwardly from the collector, wherein the light pipe has a distal end spaced from the collector, and light collected by the collector is focused outwardly by the light pipe; and

a plurality of supports, each support extending from the base plate to the light pipe, wherein the supports fix the secondary optic to the base plate;

wherein each support engages the light pipe at only a single contact point and a gap is disposed between the support and all other portions of the secondary optic.

2. The luminaire of claim 1, further comprising a plurality of brackets adapted to hang the luminaire from a ceiling such that light emitted by the secondary optic is directed straight downwardly and reduces glare at an angle from the luminaire.

3. The luminaire of claim 1, further comprising a plurality of brackets adapted to hang the luminaire from a wall such that light emitted by the secondary optic is directed downwardly at an angle and reduces glare and points outside of the angle.

4. The luminaire of claim 1, wherein the single contact point is located at the distal end of the light pipe.

5. The luminaire of claim 1, wherein the cutout encompasses the downward projection of the secondary optic.

6. The luminaire of claim 1, wherein the collector includes a receiver for receiving light transmitted from the primary optic, and wherein light received by the receiver is guided within the collector and the light pipe by total internal reflection to exit the distal end of the light pipe.

7. The luminaire of claim 6, wherein the light pipe is a collimator that culminates the light received from the receiver.

8. The luminaire of claim 1, wherein each support is in the form of a tower having a bottom end and a top end, wherein the bottom end is coupled to the base plate, and the top end is coupled to a distal end of the light pipe.

9. The luminaire of claim 8, wherein the secondary optic tapers inwardly from the distal end of the light pipe toward the collector, and wherein the gap is disposed between each tower and the light pipe below the single point of contact such that internally reflected light within the light pipe is not able to pass into the towers at any location except at the single point of contact.

10. The luminaire of claim 8, wherein the base plate, the secondary optic, and the towers are formed of a single, monolithic piece of material.

11. The luminaire of claim 10, wherein the material is polycarbonate.

12. The luminaire of claim 1, wherein no additional reflective material is disposed on the secondary optic.

13. The luminaire of claim 1, wherein the secondary optic panel is fixedly coupled with the light emitting diode.

14. The luminaire of claim 13, wherein the base plate includes an aperture, and a fastener is disposed through the aperture and fixedly couples the base plate with the light emitting diode.

15. The luminaire of claim 1, wherein the LED lighting system further comprises a plurality of the light emitting diodes and a corresponding plurality of the primary optics, and wherein the secondary optic panel further comprises a corresponding plurality of the cutouts through the base plate and a corresponding plurality of the secondary optics, wherein one of the primary optics is coupled to a corresponding one of each of the light emitting diodes, one of the secondary optics covers a corresponding one of each of the primary optics, one of the secondary optics is disposed in a corresponding one of each of the cutouts, and each of the secondary optics is fixed to the base plate by a corresponding plurality of the supports.

16. The luminaire of claim 1, further comprising a plurality of LED lighting systems and a plurality of drivers, wherein one of the drivers drives a corresponding one of the LED lighting systems.

17. The luminaire of claim 1, further comprising a light diffuser panel carried by the housing, wherein the light diffuser panel encloses the LED lighting system within the housing.

18. A method of manufacturing a luminaire, comprising:

assembling an LED lighting system; and

fixing the LED lighting system and a driver to drive the LED lighting system within a housing;

wherein assembling an LED lighting system comprises;

fixing a light emitting diode with a primary optic, the primary optic covering the light emitting diode and configured such that the primary optic receives and transmits light from the light emitting diode;

assembling a secondary optic panel comprising a secondary optic; and

covering the primary optic with the secondary optic such that the secondary optic receives and transmits the light from the primary optic;

wherein assembling the secondary optic panel comprises;

cutting a cutout from a base plate;

disposing in the cutout the secondary optic, the secondary optic comprising a collector and a light pipe extending upwardly from the collector, wherein the light pipe has a distal end spaced from the collector, and light collected by the collector is focused outwardly by the light pipe; and

fixing the secondary optic to the base plate using a plurality of supports, each support extending from the base plate to the light pipe, wherein fixing the secondary optic to the base plate comprises engaging the light pipe with the support at only a single contact point such that a gap is disposed between the support and all other portions of the secondary optic.

19. The method of claim 18, further comprising:

fixedly coupling the secondary optic panel with the light emitting diode, and

fixedly coupling the base plate with the light emitting diode.

20. The method of claim 18, further comprising mounting a plurality of brackets to the housing adapted to hang the luminaire from a ceiling or a wall.