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OxyLED? Q3 Ultra-thin Portable When searching for a desk lamp, you might come across the terms "Lumens" and "color temperature." Lumens refers to brightness. Color temperature is a bit more complex, but you could look at it as a way of measuring how much like daylight a particular kind of lamp is. Incandescent bulbs (ordinary light bulbs) produce about 2,800 degrees Kelvin, halogens around 3,200 degrees Kelvein, fluorescents around 4,500 degrees Kelvin. Sunlight at noon is 5,800 degrees Kelvin, and your computer monitor is around 6,500 degrees Kelvin. LEDs are a bit of an oddity in that they can be anything from 2,700 - 7,000 degrees Kelvin depending on the type. Many experts say that a desk lamp's color temperature should be as close to natural sunlight as possible because sunlight releases serotonin -- the "feel good" chemical in your brain. More at http://bestledlamp.com/. There's enough technical detail provided for the OxyLED C2 Eye-Care Desk Lamp to make your head spin. Confusingly, the manufacturer describes the product in terms of Lux rather than Lumens. (Lux is light intensity over a particular distance -- and means nothing to most people!) The OxyLED's temperature (CT) is 5,000 to 5,500 degrees Kelvin, so it's in the preferred daylight range. In real terms, what you have is a nice, bright panel that gives good light over a reasonable area (rather than sharply focused lighting). It's flicker-free (as are all LEDs), which is easier on the eyes. This particular desk lamp provides three different light levels, so you can choose to tone it up or down depending on the task at hand. LED life is an impressive 50,000 hours.
Sunlight Desk Lamp Natural Full Spectrum Sun Light Lights of America, the manufacturer of the Sunlight Desk Lamp, markets this product for consumers who want lighting that is as close to daylight as possible. They claim that their product provides a "full-spectrum sunlight simulation," which is difficult to argue with (because it's more marketing than science), but its energy-efficient, compact fluorescent bulb does produce 6,500 degrees Kelvin and the equivalent illumination of a 150-watt incandescent bulb, so it's in the ideal CT range and delivers plenty of brightness. Bulb life is around 10,000 hours. TaoTronics? Elune TT-DL01 Dimmable LED Desk Lamp The TaoTronics Elune Desk Lamp is a LED-powered lamp that produces a variety of color temperatures (ranging from 2,000 to 6,5000 degrees Kelvin). Owners select a "mode" based on the mood setting they desire. The lowest temperature mode is called "Sleep." There are also "Relax," "Study," and "Reading" modes to choose from. Each of these modes offers a different type of light, and within each mode, you get five different brightness levels. Indeed, the TaoTronics offers a tremendous range of lighting options! Expected life of this model is around 40,000 hours, and as with the OxyLED, Saicoo, and Jebsens, these are important numbers because LEDs are not replaceable. To put that in context, this Taotronics lamp would last about four-and-a-half years if it were used all day, every day. More at http://bestledlamp.com/a-guide-to-finding-the-best-desk-lamp-for-applying-makeup/. Saicoo? 10W LED Eye protection Multi-function Desk Lamp The commonalities between the Saicoo Multi-function Desk Lamp and the Taotronics are more than just physical; each lamp's approach to illumination is quite similar, too. The CT of the Saicoo has a slightly narrower range (running from 2,700 to 6,500 degrees Kelvin), but like the TaoTronics Elune, the Saicoo offers four modes -- each with variable brightness -- delivered by low-energy LEDs. This means that the Saicoo 10W LED is great for both general use and as a task lamp (because you can accurately match light conditions to the requirements of what you are doing). JEBSENS - Z6 Daylight White Giant Eye-care 12W LED Desk Lamp With a color temperature of 5,000 degrees Kelvin and three levels of brightness, the Jebsens Daylight White Giant Desk Lamp is aimed squarely at those who need to illuminate a fairly substantial work area. It's an LED lamp that matches the life expectancy of the OxyLED at 50,000 hours. Although it doesn't have the mood lighting element of some of our other finalists, the Jebsens has the flicker-free, eye-care credentials of the others and is ideal for those who use large desks, drawing boards, or worktables.