Remote phosphor light emitting devices
View Patent ↗A substrate including phosphor is remotely illuminated by an LED. Optical radiation that emerges through the substrate is measured. Portions of the substrate, such as raised features on the substrate, are then selectively removed responsive to the measuring, so as to obtain a desired optical radiation. In removing portions of the substrate, holes may be drilled through the substrate to provide a separate path for light from the LED that does not pass through the phosphor. Alternatively, a separate LED may be provided outside the dome.
1. A light emitting apparatus comprising:
a mounting substrate;
a dome having phosphor therein and/or thereon, on the mounting substrate;
eight or more first Light Emitting Diodes (“LEDs”) on the mounting substrate inside the dome;
one or more second LEDs on the mounting substrate outside the dome; and
a bulb that at least partially surrounds the dome and the one or more second LEDs.
2. A light emitting apparatus according to claim 1 wherein the dome includes raised features thereon.
3. A light emitting apparatus according to claim 1 wherein the dome includes an array of holes that extend at least partially through the dome.
4. A light emitting apparatus according to claim 1 wherein the first and second LEDs emit a same color.
5. A light emitting apparatus according to claim 1 wherein the first and second LEDs are blue LEDs and wherein the phosphor is yellow phosphor.
6. A light emitting apparatus according to claim 1 further comprising:
a base.
7. A light emitting apparatus according to claim 6 wherein the base is a screw-type base.
8. A light emitting apparatus according to claim 6 further comprising a heat sink.
9. A light emitting apparatus according to claim 8 wherein the heat sink extends between the substrate and the base.
10. A light emitting apparatus according to claim 1 wherein the bulb is diffusive.
11. A light emitting apparatus according to claim 1 further comprising a heat sink.
12. A light emitting apparatus according to claim 1 wherein only a single second LED is on the mounting substrate outside the dome.
13. A light emitting apparatus comprising:
a mounting substrate;
a dome having phosphor therein and/or thereon, on the mounting substrate;
eight or more first Light Emitting Diodes (“LEDs”) on the mounting substrate inside the dome;
one or more second LEDs on the mounting substrate outside the dome; and
a bulb that encloses the dome and the one or more second LEDs along with a plane that is parallel to the mounting substrate and/or to the first and second LEDs.
14. A light emitting apparatus according to claim 13 wherein the dome includes raised features thereon.
15. A light emitting apparatus according to claim 13 wherein the dome includes an array of holes that extend at least partially through the dome.
16. A light emitting apparatus according to claim 13 wherein the first and second LEDs emit a same color.
17. A light emitting apparatus according to claim 13 wherein the first and second LEDs are blue LEDs and wherein the phosphor is yellow phosphor.
18. A light emitting apparatus according to claim 13 further comprising:
a base.
19. A light emitting apparatus according to claim 18 wherein the base is a screw-type base.
20. A light emitting apparatus according to claim 18 further comprising a heat sink.
21. A light emitting apparatus according to claim 20 wherein the heat sink extends between the substrate and the base.
22. A light emitting apparatus according to claim 13 wherein the bulb is diffusive.
23. A light emitting apparatus according to claim 13 further comprising a heat sink.
24. A light emitting apparatus according to claim 13 wherein only a single second LED is on the mounting substrate outside the dome.