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References in periodicals archive ?
Simply changing the beam direction does not change the inherent lumen output of the source, and does not increase the solid angle, and therefore cannot improve the efficacy of a fixture from 17 lumens per watt to 100 lumens per watt.
With the combination of Chip-on-Board LEDs and GlacialTech's proprietary heatsink and heatpipe design, the GL-FL55 can produce up to 6300 lumens using only 55 watts with an efficiency of an astounding 115 lumens per watt.
Energy Information Administration projects that LEDs will emit 150 lumens per watt by 2020.
It's remarkably efficient with 116 lumens per watt, achieved by a high performance LED using cold forged thermal design.
According to Mark Hand, a technology expert at Philips competitor Acuity Brands Inc., that's about twice the output per watt of the best fluorescent tubes currently on the market; he estimated the best LED lamps may get up to 120 lumens per watt.
The CR4 LED downlight delivers 575 lumens and more than 60 lumens per watt and is a direct replacement for a 50 Watt 4-inch incandescent downlight.
These LED flood lights consume less power with a luminous efficacy of up to 67.9 lumens per watt.
The company's bulbs produce 80 lumens per watt, and are 270 degree wide in beaming angle and dimmable.
Lumens per watt and watts per square foot are now extensively employed in lighting related public policies.
Said to be engineered specifically to replace linear fluorescent lighting fixtures, the new SafeSite Linear Class I, Div 2 product is designed to provide superior visibility, optimum energy efficiency and low-cost maintenance for any location where there is a potential of flammable gases or vapors present, even under extreme conditions Operating at 64 lumens per watt, the SafeSite Linear offers a CRI rating greater than 70 providing cool white light at 6000K CCT for improved visibility and operating efficiency compared to traditional HID.
Required metrics for the 60-Watt incandescent LED replacement, as laid out by DOE, include:* 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 10 watts as compared to a 60 Watt incandescent.
An energy efficient lamp delivers more lumens per watt for up to 4,000 hours of life.