We used these desk lamps for a period of at least a month to determine whether or not they're worth the investment. Spoiler ...

A desk lamp’s brightness should be anywhere from 450 to 800 lumens, which will provide enough light for reading, writing and computer work without being too bright.

Desk lamps can skew austere, but not the Signal: It’s available in dozens of bright colors, including orange, Barbie pink, robin’s-egg blue, and the red shown here.

The LED desk lamp can easily be arranged above a full-size computer monitor as it extends vertically up to 30 inches, making it significantly larger than the other desk lamps we tested.

As a desk lamp, it’s not as practical as it could be. The Aerelight A1 is fabricated from a single piece of brushed aluminum and is available in three anodized finishes: Red, black, or silver.

Although it’s indelicate to discuss matters of age, this iconic 90-year-old balanced-arm desk lamp was the design that kicked off the movement, so to speak.

Incandescent: These are the traditional bulbs most of us have used for decades, and they’re starting to phase out in favor of more energy-efficient options. They produce a warm, glowing light.

This Projector Light Bulb Turns Your Whole Desk Into a Touchscreen A new project from Carnegie Mellon turns your entire desk into a touchscreen, with virtual objects interacting with real ones.