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The competition
The L Prize competition is the first government-sponsored technology program designed to spur development of ultra-efficient solid-state lighting products to replace the common light bulb. The challenge was to develop a 60W incandescent replacement lamp using LEDs. LUXEON Rebel LEDs are at the heart of the winning L Prize light bulb.
To learn how LUXEON LEDs can help you develop winning products click here to view the LUXEON Rebel White page or the LUXEON Rebel Color Portfolio for remote phosphor solutions.
The L Prize requirements
The DOE's stringent requirements for the L Prize included:
- Efficacy of more than 90 lumens per watt, which exceeds the efficiency of all incandescent and most compact fluorescent sources today, which range from 10 to 60 lumens per watt
- Energy consumption of less than 10W as compared to a 60W incandescent
- Output of more than 900 lumens, equivalent to a 60W incandescent light bulb
- A lifetime of more than 25,000 hours, which is 25 times greater than a typical incandescent bulb
- A Color Rendering Index (CRI) greater than 90, which is a high measure of lighting quality
- A color temperature between 2700 and 3000 Kelvin, which is "warm" white light, comparable to that of incandescent sources.
Using LUXEON Rebel LEDs here's how Philips won the L Prize
| L Prize Requirement |
Philips’ Result |
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|
Luminous flux (lumens, lm) |
> 900 lm |
910 lm | ||||||
|
Wattage (W) |
≤ 10 W |
9.7 W | ||||||
|
Efficacy (lm/W) |
> 90 lm/W |
93.4 lm/W |
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|
Correlated Color Temperature (CCT) |
2700 – 3000 K |
2727 K |
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|
Color Rendering Index (CRI) |
> 90 |
93 |
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