The #Dubai-lamp lasts 25000 hours, which is still only 34 months. 200 lumens for 1 watt, 400 lumens for 2 watts, 600 lumens for 3 watts, 420 lumens for a 3-watt low-voltage spotlight. “Inspired by the vision of His Highness Sheikh Mohammed bin Rashid Al Maktoum, Ruler of Dubai,” though I thought it was maybe more of a royal command than an inspiration.
on 02021-11-06The #Dubai-lamp uses 4× the LEDs of other LED lamps. 35 AED (US$12.87) for a 3-watt bulb. The theoretical limit for any kind of light is 683 lumens per watt (green light), but white #light can only reach 44% of that (300 lm/W). Some LED chips now convert 70% of their input power into light.
on 02021-11-06