|
| |
Comparison of various light sources:
| Light type |
Efficiency
Lumen Per Watt |
CRI
Color
Quality
Max = 100
|
Lamp Life
in
Hours
|
Comments |
| Older regular Fluorescent |
60 |
60 |
5,000 to 20,000 |
Click here to see savings from
Retrofit |
| ATS Fluorescent |
90 to 100 |
>80 |
20,000 |
Best mix of high efficiency and quality and life |
| Regular Incandescent bulbs |
10 to 20 |
70 to 90 |
750 to 2500 |
Very low Efficiency. Even lower efficiency needed to extend
life |
| Quartz Halogen |
15 to 20 |
90 to 100 |
750 to 2000 |
High quality, but very low efficiency |
| The following |
are generally |
stationary |
lights |
due to size or being fragile |
| Sun |
NA |
100 |
A few billion years |
High quality, long life :) |
| Metal Halide |
125 |
70 |
5,000 to 15,000 |
High efficiency, but not portable & needs long cool down
before restrt |
| Mercury Lamp |
30 to 60 |
50 |
16,000 to 24,000 |
Long life but mediocre efficiency & quality |
| Low Pressure Sodium |
100 to 180 |
<20
(Pure Red) |
16,000 to 18,000 |
High Efficiency, but Extremely poor quality |
| High Pressure Sodium |
70 to 120 |
22
Orange |
16,000 to 24,000 |
High Efficiency, very poor quality |
|