Light-emitting diode flash module with enhanced spectral emission
View Patent ↗A light-emitting diode (“LED”) device includes a plurality of LEDs. Each LED in the plurality of LEDs is adjacent to at least one other of the plurality of LEDs. At least one of the plurality of LEDs has a radiation with a full-width-half-maximum greater than 50 nm.
1. A light-emitting diode (“LED”) device comprising:
a plurality of LEDs including
a first LED emitting at least a first color having a first full-width-half-maximum greater than 50 nm, the first LED comprising a first LED chip and a first encapsulant containing a first wavelength-converting material, the first LED chip being covered by the first encapsulant, the first LED chip of the first LED including a first blue-emitting LED chip, and
a second LED adjacent to the first LED emitting at least a second color, the second LED comprising a second LED chip and a second encapsulant containing a second wavelength-converting material, the second LED chip being covered by the second encapsulant, the second LED chip of the second LED including a second blue-emitting LED chip.
2. The LED device of claim 1 wherein the second color is a first radiation of the second LED.
3. The LED device of claim 1 wherein the second color has a second full-width-half-maximum greater than 50 nm.
4. The LED device of claim 1 wherein the first color is a second radiation of the first LED and the first LED further emits a third color that is a first radiation of the first LED.
5. The LED device of claim 4 wherein the first wavelength-converting material emits a green radiation.
6. The LED device of claim 1 having a peak combined total emission, wherein a combined total emission of the LED device is at least 20% of the peak combined total emission from 470 nm to 650 nm.
7. The LED device of claim 1 wherein the plurality of LEDs further includes a UV LED with a third wavelength-converting material.
8. The LED device of claim 1 wherein the first wavelength-converting material emits a green radiation and the second wavelength-converting material emits a red radiation.
9. The LED device of claim 8 wherein the plurality of LEDs further includes a blue LED emitting a blue radiation, and wherein the LED device has a power ratio of red:green:blue light of about 3:6:1.
10. The LED device of claim 7 wherein the first wavelength-converting material emits a green radiation, the second wavelength-converting material emits a red radiation, and the third wavelength-converting material emits a blue radiation.
11. The LED device of claim 10 wherein the LED device has a power ratio of red:green:blue light of about 3:6:1.
12. A light-emitting diode (“LED”) device comprising:
a plurality of LEDs including
a first LED emitting at least a first color having a first full-width-half-maximum greater than 50 nm, the first LED comprising a first LED chip and a first encapsulant containing a first wavelength-converting material, the first LED chip being covered by the first encapsulant, the first LED chip of the first LED being a first ultraviolet (“UV”) LED,
a second LED adjacent to the first LED emitting at least a second color, the second LED comprising a second LED chip and a second encapsulant containing a second wavelength-converting material, the second LED chip being covered by the second encapsulant, the second LED chip of the second LED being a second UV LED, and
a third UV LED with a third wavelength-converting material,
wherein the first wavelength-converting material emits a blue radiation, the second wavelength-converting material emits a green radiation, and the third wavelength-converting material emits a red radiation.
13. The LED device of claim 12 wherein a combined emission of the LED device has a power ratio of red:green:blue light of about 3:6:1.
14. The LED device of claim 12 having a peak combined total emission, wherein a combined total emission of the LED device is at least 20% of the peak combined total emission from 450 nm to 650 nm.
15. The LED device of claim 1 emitting light having a color temperature of between 5,000 degrees Kelvin and 9,500 degrees Kelvin.
16. A flash module having an LED device in accordance with claim 1 .
17. The flash module of claim 16 wherein a first bias is selectively applied to the first LED and a second bias is selectively applied to the second LED so as to produce a selected combined total emission from the flash module.