Ова со LED-ов ми изгледа интересно...
low-pressure sodium: 125 to 200 lm/W (typical 150 lm/W)
high-pressure sodium: 80 to 125 lm/W
HID: 65 to 110 lm/W
T-12 fluorescent: up to 90 lm/W (typical 60 to 80 lm/W)
T-8 fluorescent: up to 100 lm/W (typical 85 to 92 lm/W)
T-5 fluorescent: up to 104 lm/W (typical 95 to 100 lm/W)
CFL: 60 to 70 lm/W typical (includes ballast losses)
mercury vapor: 55 lm/W
xenon arc: 30 lm/W
incandescent: 15 lm/W typical (as low as 1 lm/W for small lamps, up to 40 lm/W for short-life bulbs)
white LED: 15 to 30 lm/W typical, up to 60 lm/W next year (current record 74 lm/W)
colored LED: 5 to 55 lm/W depending upon color (current record is 102 lm/W @ 618 nm)
For large amounts of white light HID in the larger sizes (400W to 1000W) is currently the most efficient. For residential and office use T-5 fluorescent is the most efficient option although T-8 comes fairly close. For small uses LED is generally more efficient than incandescent. For colored light LED is the best choice regardless of size.
