You are here

Lighting Basics

August 15, 2013 - 5:12pm

Addthis

There are many different types of artificial lights, all of which have different applications and uses. Types of lighting include:

Which type is best depends on the application. See the chart below for a comparison of lighting types.

Lighting Comparison Chart
Lighting Type Efficacy
(lumens/watt)
Lifetime
(hours)
Color Rendition Index
(CRI)
Color Temperature
(K)
Indoors/Outdoors
Fluorescent
Straight Tube 30–110 7000–24,000 50–90 (fair to good) 2700–6500 (warm to cold) Indoors/outdoors
Compact Fluorescent 50–70 10,000 65–88 (good) 2700–6500 (warm to cold) Indoors/outdoors
Circline 40–50 12,000     Indoors
High-Intensity Discharge
Mercury Vapor 25–60 16,000–24,000 50 (poor to fair) 3,200–7,000 (warm to cold) Outdoors
Metal Halide 70–115 5,000–20,000 70 (fair) 3,700 (cold) Indoors/outdoors
High-Pressure Sodium 50–140 16,000–24,000 25 (poor) 2,100 (warm) Outdoors
Incandescent
Standard "A" 10–17 750–2,500 98–100 (excellent) 2,700–2,800 (warm) Indoors/outdoors
Energy-Saving Incandescent (or Halogen) 12–22 1,000–4,000 98–100 (excellent) 2,900–3,200 (warm to neutral) Indoors/outdoors
Reflector 12–19 2,000–3,000 98–100 (excellent) 2,800 (warm) Indoors/outdoors
Light-Emitting Diodes
Cool White LEDs 60–92 25,000–50,000 70–90 (fair to good) 5000 (cold) Indoors/
outdoors
Warm White LEDs 27–54 25,000–50,000 70–90 (fair to good) 3300 (neutral) Indoors/ outdoors
Low-Pressure Sodium 60–150 12,000–18,000 -44 (very poor)   Outdoors

 

Addthis