Technical indicators of main light sources
Source: Date:2010-03-12 16:31:44
Light source type | Light efficiency (LM / W) | Color rendering index Ra | Color temperature K | Average life spanh |
Incandescent light bulbs | 15 | 100 | 2800 | 1000 |
Quartz halogen lamp | 25 | 100 | 3000 | 2000-3000 |
High pressure mercury lamp | 50 | 45 | 3300-4300 | 6000 |
Ordinary fluorescent lamp | 70 | 70 | Full range | 8000 |
Energy saving lamp | 85 | 85 | Full range | 8000-12000 |
Metal halide lamp | 75-95 | 65-92 | 3000/4500/5600 | 6000-20000 |
Tricolor fluorescent lamp | 96 | 80-98 | Full range | 10000 |
High pressure sodium lamp | 120 | 23/60/85 | 1950/2200/2500 | 24000 |
Low pressure sodium lamp | 200 | 44 | 1700 | 28000 |
