Not necessarily. LEDs are used in electronic devices as indicator lamps and have been energy-efficient and reliable for years. However, creating white, stable light of high-quality from LEDs is a completely new challenge. The most important factor influencing the LED lamps energy-efficiency and long life is a well-thought-out design of the lamp. LED lamps must undergo a series of tests to be recognized as more efficient and longer lasting than conventional lighting (incandescent, fluorescent). The following requirements should also be met:
- The lamp brightness is equal to or greater than in comparable conventional technologies (incandescent, fluorescent lamps). Additionally, the light is well dispersed in the area illuminated by the lamp.
- The amount of emitted light is constant during the lamp use. Only reducing the amount of light at the end of lifetime is permissible
- Very high color quality of light. The shade of white light is not changed during the lamp use
- The lamp is at least as much or more energy-efficient as fluorescent lamps
- Light appears immediately after turning on the lamp
- The light does not blink when dimming / brightening
- The lamp does not take power when it is off. The exception is the lamp with the external control system, which should not consume more than 0.5W when disabled.
A poorly designed lamp can cause a large number of problems that are visible at once, and some appear only after some (often after less than a year). These include:
- flickering light
- change of the light color
- poorer intensity of light
- uneven light emission
- taking power even when disabled