Traditional halogen bulbs and LEDs are the two main types of projector light bulbs. LCD projectors use standard light bulbs, while DLP projectors can use either traditional lighting or LED lighting.
One of the main advantages of LCD projectors and DLP projectors using a halogen lamp is their simple design and low cost. Halogen lamps produce a bright picture, and the lamps typically last between 1,000 and 5,000 hours before requiring replacement. In DLP projectors with LEDs, users can expect the light source to last 10,000 or 20,000 hours, and LEDs don't have the warm-up or cool-down time halogen lights have. LED technology also powers pico projectors, which are not as bright as standard projectors but are portable and easy to attach to a smartphone or other portable device.