The efficacy of the newer led light bulbs is more than five times higher than comparable incandescent bulbs. In other words, led light bulbs use only about 20% as much electricity to produce the same amount of light. However, because led bulbs direct a larger percentage of light where it is needed, in many applications they are as much as ten times as effective as incandescent bulbs, reducing energy use by 90%. Learn more.
The number of leds is not the determining factor of bulb brightness. Different types of leds vary greatly in size and light output. The most accurate indicators of the brightness of LED bulbs are the measured lumens or lux. Lumens measure the total amount of light output from a bulb. Lux measures how bright the light is on a surface at a specified distance. Learn more.
Led light bulbs are much brighter than incandescent or halogen bulbs of the same wattage, but led bulbs are not available in very high wattages. Thus, when replacing incandescent or halogen lamps with led lamps, more led lamps are often needed. For example, to replace one 100-watt incandescent bulb you may need two 5-watt or 6-watt led bulbs. Although you have more bulbs you are still using 85% less electricity. Learn more.
Few led light bulbs with the same size and shape as a standard 60 watt incandescent bulb are comparable in light output. The closest led bulb we have found is our A19 9W High Power LED Bulb. Learn more.
The Color Correlated Temperature (CCT) is given in the description of each of our white led bulbs. The color (CCT) of our white bulbs ranges from a warm yellow white (2700K) to a cool blue white (7000K). By comparison, a typical incandescent bulb has a CCT of 2800K. A typical halogen is a bit higher, maybe 3500K. Daylight white is 4500K and a cool white fluorescent is 6000K or more.
The human eye adapts to background light so that even a daylight white bulb will look slightly blue in a room illuminated mainly with incandescent bulbs. Similarly, an incandescent bulb will look very yellow or even orange in midday sunlight. Learn more.
Led spotlights output a narrower beam of light, typically less than 45 degrees wide. Most of the light from a spotlight is concentrated onto a relatively small area producing a bright spot. Led floodlights output a wider beam of light, up to 120 degrees, so the light from a floodlight is spread out over a much larger area.
Because the light is more concentrated, a spotlight will appear brighter than a floodlight but only within its narrower beam. A spotlight is more suited to illuminating objects and a floodlight is more suited to illuminating areas. Learn more.
Energy efficiency of light sources is typically measured in lumens per watt (lm/W), meaning the amount of light produced for each watt of electricity consumed by the light source. This is known as luminous efficacy.Learn more.
No, LED lights and tubes contain NO hazardous chemicals. However fluorescent tubes do contain Mercury and Phosphor.
If a fluorescent tube is broken, the potential for poisoning exists, especially if proper clean up procedures are not followed. Most Australian states now have specific legislation that governs the disposal of fluorescent tubes. This causes transport and manufacturing activities that generate additional green house gases. Because of the relatively short life of fluorescent tubes, their collective impact on the environment can be significant.
Proper and careful clean up of broken fluorescent tubes is essential. Learn more.
Flicker
LEDs emit no flicker. The light emitted by an LED is very stable and produces no side effects The "colour" of sunlight is 5000K to 6000K. LED lights in this colour range closely resemble the visible spectrum of sunlight providing soft and natural colours that are easy on the eyes. Modern fluorescent tubes emit little "visible" flicker, but as the tube and/or the ballast deteriorates, flicker can become evident. Flicker can create headaches and migraines and results in lower productivity.
UV
LEDs do not emit ultraviolet. The levels of UV emitted by most fluorescent tubes is so low as to be irrelevant. Tests indicate that 8 hours exposure to the UV emitted by a fluorescent tube is the equivalent to two minutes of midday sun. Learn more.
For many fittings, electrical modifications are NOT required.
Fluorescent Tubes
However, for most LED fitting designed to replace fluorescent tubes, re-wiring of the fitting is required. LED tubes that do not require rewiring of the fitting should not be used as they use more energy than necessary and produce more heat than a fluorescent tube (you are combining the heat of the LED with the heat of the fluorescent ballast). Learn more.
Cree LED Lighting products are designed to last as long as 50,000 hours. Incredible longevity means that you might never change another light again.
A Generation of Light
What is 50,000 hours? It is 50 times the life of a typical incandescent bulb and 5 times the lifetime of an average compact fluorescent lamp (CFL). In fact, if you ran one Cree lamp for 6 hours per day every day, it would last for nearly 23 years. That is five presidential elections, time for a home remodeling, and the expanse of an entire generation.
Reduce Maintenance and Labor
We all have at least one bulb that is hard to reach and needs a ladder or a pole to replace it. For a home owner, fifty times longer life than incandescent bulbs means 50 fewer chances to fall off a ladder. For a business owner, it means significantly lower maintenance and labor expenses.
Reduce Your Waste Stream
The production and use of LEDs requires significantly less energy than incandescents or CFLs. With Cree LED Lighting products, you'll throw away fewer lamps and stop worrying about their mercury content. All Cree LED Lighting products are free of mercury and other toxic materials, a clear win for the environment.
Learn more.When you average delivered lumens over the course of 60,000 hours, you'll see that LED outperforms a 400-watt MH lamp operated in a horizontal position. (60,000 hours is used for this comparison to show three full life cycles of the HID.) The MH's lumen depreciation, as well as optical and ballast losses, quickly reduce output of the HID system. Note that there are three relamps over 60,000 hours.
Conversely, LED has significantly better lumen maintenance and a more efficient driver. Also note that the LED fixture typically doesn't need relamping from zero to 60,000 hours.
Combine this with Beta's exclusive NanoOptic and LED outperforms MH over the course of the life of the fixture.
Result: the LED's average delivered lumens is 74% higher than HID over 60,000 hours. Learn more.
Color Rendering Index (CRI) is defined as a light sources ability to render color. The higher the CRI, the better the light source renders every color in the visible spectrum. To have what is generally considered good color rendering, a source must be >90 CRI Learn more.
The life span of an LED is vastly longer than that of incandescent, fluorescent or HID lamp sources, generally lasting 50,000 hours or longer. Although the LED never really burns out, product life span is measured by lumen depreciation.
The Illuminating Engineering Society's (IES) current standard for calculating the life of an LED as the point at which the LED reaches 30 percent lumen depreciation.
Remember, a 100,000-hour rating is not equivalent to lamp life rating. LED life is rated where it has reached 30 percent lumen depreciation. At 100,000 hours an LED would still be operating, but at a decreased lumen output. Learn more.
