System and method for preventing light spill
Described is a light engine comprised of an array of light engine modules which are compartmentalized to minimize light spill from one light engine module to other light engine modules.
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 enclosure covering the light source;
a first light shield, comprising a plurality of first apertures corresponding to the plurality of light modules, each first aperture fitting around a corresponding light module, the first light shield configured to reduce light spill from the light enclosures of the plurality of light modules toward the distal ends of the plurality of light modules;
a first baffle forming sides of a plurality of first shielding compartments corresponding to the plurality of light modules;
a second light shield, comprising a plurality of second apertures corresponding to the plurality of light modules, each second aperture fitting around a corresponding light module, the second light shield coupled to a proximal end of the first baffle, the exit aperture of each light module located in a corresponding first shielding compartment, the second 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, the 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 shields or baffles comprise a non-reflective coating.
3. The luminaire of claim 1 , wherein all of the light shields or baffles comprise a non-reflective coating.
4. The luminaire of claim 1 , wherein one or more of the plurality of output lenses comprises a plurality of optical elements.
5. The luminaire of claim 4 , wherein the plurality of optical elements are configured to alter a relationship to each other.
6. The luminaire of claim 1 , wherein the light source comprises a plurality of light emitting diode (LED) dies, each die emitting light of a differing color.
7. The luminaire of claim 6 , wherein the light source comprises four LED dies, emitting red, green, blue, and white light, respectively.
8. The luminaire of claim 6 , wherein the light module further comprises a light guide optically coupled to the light source, the light guide configured to homogenize and conduct the light emitted by the LED dies to the exit aperture.
9. The luminaire of claim 8 , wherein the light guide operates by total internal reflection.
10. The luminaire of claim 8 , wherein the light guide tapers so that an entrance aperture of the light guide is smaller than the exit aperture.
11. The luminaire of claim 8 , wherein the light guide is contained within an opaque protective sleeve.