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How do LEDs compare to other lights
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LPW |
Rated Hour |
CRI |
Ignition Time |
Color Temp. |
Considerations |
| Incandescence |
11 - 15 |
1.5K - 5K |
40 |
instant |
2800 |
Very Inefficient, Short Life |
| Mercury Vapor |
13 - 48 |
12 - 24K |
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2 - 15 min |
4000 |
Inefficiency |
| HPS |
45 - 110 |
12 - 24K |
25 |
2 - 15 min |
2000 |
Low CRI |
| LPS |
80 - 180 |
10 - 18K |
0 |
2 - 15 min. |
1800 |
Low CRI |
| Metal Halide |
60 - 100 |
10 - 15K |
75 |
2 - 15 min. |
3000-4300 |
High Maintenance |
| LED Lamp |
70 |
60 K |
80+ |
Instant |
3200-6400 |
Relatively Higher Initial Cost |
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| LED Q&A |
What is LED
Like a normal diode, an LED consists of a chip of semiconducting material impregnated, or doped,
with impurities to create a p-n junction. As in other diodes, current flows easily from the p-side,
or cathode, to the n-side, or anode, but not in the reverse direction. Charge-carriers electrons
and electron holes flow into the junction from electrodes with different voltages. When an electron
meets a hole, it falls into a lower energy level, and releases energy in the form of a photon.
... more
What are the Advantages of LED Lighting
- Extremely long life
- Highly Efficient and Energy Saving
- Instant starting, no Cold-Start
- Bright, white light (CRI >= 80)
- Improved visibility and security
- No glare and light pollution
- Green Light Source
What are the Applications of LED Lighting
- Street & area lighting
- Interior lighting
- Signs and sign lighting
- Architectural, landscape lighting
- Flash lights
- Automobile lights
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