System and method for preventing light spill

Patent metadata

Field	Value
Publication number	US-10563839-B2
Application number	US-201916384406-A
Country	US
Kind code	B2
Filing date	Apr 15, 2019
Priority date	Sep 14, 2016
Publication date	Feb 18, 2020
Grant date	Feb 18, 2020

Abstract

A luminaire includes a plurality of light modules that have a light source at one end, an exit aperture at the other end, and a light source cover. A first baffle forms sides of first shielding compartments that correspond to the light modules. A light shield that includes a plurality of shield apertures that correspond to the plurality of light modules. Each shield aperture fits around a corresponding light module. The light shield is mounted on a proximal end of the first baffle and the exit aperture of each light module is located in a corresponding first shielding compartment. The light shield is configured to reduce light spill from the first shielding compartments toward the proximal ends of the light modules. The luminaire also includes a plurality of output lenses that correspond to the plurality of first shielding compartments. The output lenses are coupled to a distal end of the first baffle and the edges of each lens are coated with a light absorbing coating. The luminaire further includes a second baffle that forms sides of a plurality of second shielding compartments that correspond to the plurality of output lenses. A proximal end of the second baffle couples to the output lenses.

First claim

What is claimed is:

1. A luminaire, comprising:
a plurality of light modules, each having a light source at a proximal end, an exit aperture at a distal end, and a light source cover;
a first baffle forming sides of a plurality of first shielding compartments corresponding to the plurality of light modules;
a light shield, comprising a plurality of shield apertures corresponding to the plurality of light modules, each shield aperture fitting around a corresponding light module, the light shield mounted on a proximal end of the first baffle, the exit aperture of each light module located in a corresponding first shielding compartment, the light shield configured to reduce light spill from the first shielding compartments toward the proximal ends of the plurality of light modules;
a plurality of output lenses corresponding to the plurality of first shielding compartments, the plurality of output lenses coupled to a distal end of the first baffle, edges of each lens coated with a light absorbing coating; and
a second baffle forming sides of a plurality of second shielding compartments corresponding to the plurality of output lenses, a proximal end of the second baffle coupled to the plurality of output lenses.

2. The luminaire of claim 1 , wherein one or more of the light shield or baffles comprise a non-reflective coating.

3. The luminaire of claim 1 , wherein all of the light shield and baffles comprise a non-reflective coating.

4. The luminaire of claim 1 wherein one or more of the light shield or baffles comprise heat conducting material.

5. The luminaire of claim 1 wherein one or more of the light shield and baffles comprise plastic.

6. The luminaire of claim 1 wherein the light shield, the first baffle, and the second baffle comprise plastic.

7. The luminaire of claim 1 , wherein one or more of the plurality of output lenses comprises a plurality of optical elements.

8. The luminaire of claim 7 , wherein the plurality of optical elements are configured to alter a relationship to each other.

9. The luminaire of claim 1 , wherein at least one light source comprises a plurality of LED dies, wherein at least one LED die of the plurality of LED dies emits light of a color different than light emitted by another LED die of the plurality of LED dies.

10. The luminaire of claim 9 , wherein first, second, third, and fourth LED dies of the plurality of LED dies emit red, green, blue, and white light, respectively.

11. The luminaire of claim 9 , wherein the light module of the at least one light source further comprises a light guide optically coupled to the at least one light source, the light guide configured to homogenize and conduct the light emitted by the plurality of LED dies to the exit aperture of the light module.

12. The luminaire of claim 11 , wherein the light guide operates by total internal reflection.

13. The luminaire of claim 11 , wherein the light guide tapers so that an entry port of the light guide is smaller than an exit port of the light guide.

14. The luminaire of claim 11 , wherein the light guide is contained within an opaque protective sleeve.

Assignees

• Robe Lighting Sro

Inventors

• Jurik Pavel
• Valchar Josef

Classifications

• F21V5/048

  the lens being a simple lens adapted to cooperate with a point-like source for emitting mainly in one direction and having an axis coincident with the main light transmission direction, e.g. convergent or divergent lenses, plano-concave or plano-convex lenses · CPC title

• F21V5/04

  of lens shape · CPC title

• F21V11/06

  using crossed laminae or strips {, e.g. grid-shaped louvers}; using lattices or honeycombs · CPC title

• F21S2/00

  Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title