Light Efficiency
| Light Source |
Lumens/Watt |
| 32 watt T8 fluorescent |
85-95 |
| standard F40T12 cool white fluorescent |
60-65 |
| compact fluorescents |
48-60 |
| Red/Orange LED |
53 |
| T3 tubular halogen |
20 |
| white LED |
15-19 |
| standard 100 watt incandescent |
17 |
| incandescent night light bulb (7w) |
6 |
| incandescent flashlight bulbs |
<6 |
The light efficiency of white LEDs is about the same, or a
little less then that of incandescent lights. However, they are
far less efficient then flourescent lights. Additionally, the
total amout of light that you could get out of a single 5mm
Nichia white LED is only about 2-3 lumens at best. In order to
get more light, LEDs must be used in an array. As a result, using
LEDs to light a whole room would be very inefficient and require
a lot of LEDs. However, in certain applications, using LEDs are a
good choice...
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