Light modules and devices incorporating light modules
According to one implementation an assembly is provided that facilitates a coupling of one or more light diffusing optical fibers to one or more light emitting diodes. According to one implementation the assembly includes a light emitting diode positioned inside a cavity of a frame that is equipped with means to directly or indirectly electrically couple the anode and cathode of the light emitting diode to a printed circuit board. A proximal end portion of the light diffusing optical fiber is supported inside a through opening of a lid positioned over a front side of the frame. The light diffusing optical fiber includes a core that is surround by a cladding. According to some implementations the proximal end of the light diffusing optical fiber is butt-coupled to the light emitting diode with there being no gap between the proximal end of the fiber and the light emitting side of the light emitting diode.
1. An apparatus having an external surface susceptible to bacterial contamination, the apparatus comprising:
a housing having an external surface and internal channel, the housing being made of a material that is transparent to bacterial disinfecting ultraviolet light;
a first light emitting diode having an energized state and a de-energized state, in the energized state the first light emitting diode emits bacterial disinfecting ultraviolet light and in the de-energized state the first light emitting diode does not emit light;
a second light emitting diode having an energized state and a de-energized state, in the energized state the second light emitting diode emits visible light and in the de-energized state the first light emitting diode does not emit light;
a light diffusing optical fiber residing in the internal channel and configured to transmit both visible light and bacterial disinfecting ultraviolet light, the light diffusing optical fiber being optically coupled to both the first and second light emitting diodes.
2. The apparatus according to claim 1 , wherein the light diffusing optical fiber has a core surrounded by a cladding, the core being butt-coupled to each of the first and second light emitting diodes.
3. The apparatus according to claim 1 , wherein the light diffusing optical fiber has a core surrounded by a cladding, the core and cladding being butt-coupled to each of the first and second light emitting diodes.
4. The apparatus according to claim 1 , wherein when the first light emitting diode is in the energized state the second light emitting diode is in the energized state.
5. The apparatus according to claim 1 , wherein the visible light emitted by the second light emitting fiber is red light.
6. The apparatus according to claim 1 , wherein when the first light emitting diode is in the de-energized state the second light emitting diode is in the energized state.
7. The apparatus according to claim 1 , wherein the visible light emitted by the second light emitting diode is green light.
8. The apparatus according to claim 1 , wherein the light diffusing optical fiber has a first end and a second end opposite the first end, the first end being optically coupled to the first and second light emitting diodes.
9. The apparatus according to claim 8 , wherein the light diffusing optical fiber has a core surrounded by a cladding, the core at the first end of the light diffusing optical fiber being butt-coupled to both the first and second light emitting diodes.
10. The apparatus according to claim 1 , wherein the light diffusing optical fiber has a first end and a second end opposite the first end, the first end being optically coupled to the first light emitting diode and the second end being optically coupled to the second light emitting diode.
11. The apparatus according to claim 1 , further comprising a third light emitting diode having an energized state and a de-energized state, in the energized state the third light emitting diode emits visible light and in the de-energized state the third light emitting diode does not emit light.
12. The apparatus according to claim 11 , wherein the second light emitting diode emits visible light of a first color, and the third light emitting diode emits light of a second color different than the first color.
13. The apparatus according to claim 12 , wherein the first color is red and the second color is green.
14. The apparatus according to claim 12 , wherein when the first light emitting diode is in the energized state the second light emitting diode is in the energized state.
15. The apparatus according to claim 12 , wherein when the first light emitting diode is in the energized state the third light emitting diode is in the de-energized state.
16. The apparatus according to claim 15 , wherein the first color is red.
17. The apparatus according to claim 16 , wherein the second color is green.
18. The apparatus according to claim 11 , wherein the light diffusing optical fiber has a first end and a second end opposite the first end, the first end being optically coupled to the first, second and third light emitting diodes.
19. The apparatus according to claim 11 , wherein the light diffusing optical fiber has a core surrounded by a cladding, the core at the first end of the light diffusing optical fiber being butt-coupled to the first, second and third light emitting diodes.
20. The apparatus according to claim 14 , wherein when the first light emitting diode is in the energized state the third light emitting diode is in the de-energized state.