LED vs other bulb types
How LED compares with halogen, CFL, and incandescent for a desk lamp.
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LED
LEDs use much less power for the same light than incandescent bulbs, run cooler, and last a long time. Many desk lamps now have LEDs built in, often with dimming and adjustable color. Quality varies, so check lumens, CRI, and whether the lamp flickers when dimmed.
Built-in LED vs replaceable bulb
- Built-in LED: slim designs and extra features. When the LEDs reach end of life, you usually replace the lamp.
- Replaceable bulb: you can change brightness and color by swapping the bulb. Check the socket type and the lamp's maximum wattage.
Built-in LED
- Slim design, features
- Lamp replaced at end of life
Replaceable bulb
- Swap brightness or color
- Check socket and max wattage
Halogen
A type of incandescent. Bright and good color, but uses far more power than LED and runs very hot. Hot bulbs near your hands and papers are a drawback in a desk lamp.
CFL (compact fluorescent)
More efficient than incandescent but less than LED. Can take time to reach full brightness, and many do not dim well. CFLs contain a small amount of mercury and need proper disposal.
Incandescent
Warm light and excellent color rendering, but the least efficient and hottest option. Most general-service incandescent bulbs no longer meet U.S. Department of Energy efficiency standards, so they are largely off store shelves. Some specialty types, such as appliance bulbs, are exempt.
Comparison at a glance
| Feature | LED | Halogen | CFL | Incandescent |
|---|---|---|---|---|
| Efficiency | Highest | Low | Medium | Lowest |
| Heat | Low | Very high | Low | High |
| Dimming | Common (check) | Yes | Often limited | Yes |
| Mercury | No | No | Yes, small amount | No |
FAQ
General information, not medical advice. See an eye care professional about eye strain or vision concerns.
