Low profile light having elongated reflector and associated methods

Patent metadata

Field	Value
Publication number	US-9028091-B2
Application number	US-201313800253-A
Country	US
Kind code	B2
Filing date	Mar 13, 2013
Priority date	Oct 5, 2009
Publication date	May 12, 2015
Grant date	May 12, 2015

Abstract

A luminaire to be carried by a lighting fixture. The luminaire may include a housing, a primary optic disposed within the housing having a reflective inner surface defining an optical chamber, a light source, and a heat sink defining an aperture through which light may propagate. The light source may include a plurality of light-emitting diodes (LEDs). The luminaire may further include a secondary optic positioned adjacent to the light source that may collimate and/or refract light emitted by the light source, and may form a seal between the light source and the optical chamber. The luminaire may further include a color conversion layer configured to change the color of light emitted by the light source.

First claim

What is claimed is:

1. A luminaire adapted to be carried by a light fixture comprising:
a housing;
a primary optic disposed within the housing having a reflective inner surface and a generally elongated shape defining an optical chamber and an aperture;
a light source;
a heat sink;
a secondary optic positioned adjacent to the light source; and
a plurality of hanger holes;
wherein the light source is positioned in thermal communication with the heat sink;
wherein light emitted by the light source enters the optical chamber incident upon the reflective inner surface of the primary optic, and is reflected through the aperture;
wherein the secondary optic is configured to attach to the heat sink and form a seal between the light source and the optical chamber;
wherein the primary optic further comprises an attachment structure positioned on the outer surface of the primary optic; and
wherein each of the plurality of hanger holes is configured to attach to an external light fixture.

2. A luminaire according to claim 1 further comprising an occupancy sensor having a field of view;
wherein the controller is in communication with the occupancy sensor;
wherein the occupancy sensor is configured to determine whether an object is within the field of view of the occupancy sensor;
wherein the occupancy sensor is configured to transmit a positive indication when an object is determined to be within the field of view; and
wherein the controller is configured to operate the light source to illuminate the field of view of the occupancy sensor upon receiving the positive indication.

3. A luminaire according to claim 2 wherein the occupancy sensor is configured to determine the position of the object along the length of the luminaire; and wherein the controller is configured to operate the plurality of LEDs adjacent to the same position as the object along the length of the luminaire.

4. A luminaire according to claim 1 further comprising a network interface configured to enable communication with a network;
wherein the controller is in communication with the network interface;
wherein the network interface is operable to receive communications across the network and provide an instruction to the controller; and
wherein the controller operates the light source responsive to the instruction received from the network interface.

5. A luminaire according to claim 4 wherein the network comprises a plurality of luminaires; wherein the controller is operable to send an instruction to the network interface; and wherein the network interface is operable to transmit the instruction to each of the plurality of luminaires across the network.

Assignees

• Lighting Science Group Corp

Inventors

• Holland Eric
• Boomgaarden Mark Penley
• Kelley Ryan

Classifications

• F21V29/503

  of light sources (cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H10H20/858) · CPC title

• F21V29/507

  of means for protecting lighting devices from damage, e.g. housings · CPC title

• F21V7/005 Primary

  with an elongated shape to cooperate with linear light sources · CPC title

• F21S8/04

  intended only for mounting on a ceiling or the like overhead structures (F21S8/02 takes precedence; {details of ceiling bases F21V21/03}) · CPC title

• F21V15/01

  Housings, e.g. material or assembling of housing parts (F21V15/02 takes precedence {housings forming signs or letters G09F13/04}) · CPC title