Type | Luminous efficacy (lumen per circuit watt) |
Colour appearance (kelvin) |
Colour rendering (Ra) |
Hours life | |
---|---|---|---|---|---|
Tungsten | |||||
standard | 12 | 2,600 | 100 | 1,000 | |
long life | 8.75 | 2,500 | 100 | 6,000 | |
extra long life | 5.25 | 2,500 | 100 | 16,000 | |
Tungsten Halogen | 18 - 20 | 3,000 | 100 | 2,000 - 8,000 | |
Compact fluorescent | 47 - 82 | 2,700 - 4,000 | 85 | 8,000+ | |
38mm T12 white fluorescent tube | 36 - 71 | 3,500 | 59 | 7,000+ | |
25mm T8 fluorescent tube | |||||
white (SG) | 37 - 68 | 3,500 | 58 | 8,000+ | |
white (HF) | 55 - 80 | 3,500 | 58 | 8,000+ | |
full spectrum multiphosphor (HF) | 64 | 5,000 | 95 | 17,500 | |
triphosphor (HF) | 71 - 92 | 2,700 - 6,000 | 80+ | 12,000 - 24,000 | |
triphosphor extreme (HF) | 71 | 3,000 - 4,000 | 80+ | 40,000 - 60,000 | |
triphosphor (HF) | 57 - 82 | 2,700 - 6,000 | 90+ | 12,000+ | |
16mm T5 triphosphor (HF) | |||||
high economy | 66 - 82 | 2,700 - 6,500 | 80+ | 16,000+ | |
high output | 62 - 76 | 2,700 - 6,500 | 80+ | 16,000+ | |
7mm T2 triphosphor (HF) | 55 | 3,500 - 6,000 | 85 | 8,000 - 12,000 | |
Metal halide (SG) | 71 - 83 | 3,000 - 6,000 | 65 - 85 | 8,000 - 20,000 | |
Metal halide (HF) | 86 - 95 | 3,000 - 6,000 | 65 - 85 | 8,000 - 20,000 | |
Mercury (SG) | 31 - 57 | 3,900 - 4,200 | 36 - 49 | 12,000+ | |
Mercury D/Luxe (SG) | 31 - 57 | 3,300 - 3,500 | 47 - 58 | 12,000+ | |
Low pressure sodium/E (HF) | 148 - 173 | 1,800 | 0 | 6,000 | |
High pressure sodium (SG) | 65 - 103 | 2,000 | 25 | 12,000 - 30,000 | |
High pressure sodium D/L (SG) | 78 - 85 | 2,200 | 65 | 12,000 | |
White sodium (HF) | 31 - 46 | 2,500 | 80 | 8,000+ | |
Induction (HF) | 62 - 70 | 2,700 - 4,000 | 85 | 10,000 - 60,000 | |
Light emitting diode | 50 - 100 | Saturated 3,000 - 6,000 |
70 - 80 | 50,000 - 100,000 | |