照明是每单位区域表面上的总发光通量。它以Lux（LX）为单位。
1 fc·h = 0 lm/cm²
1 lm/cm² = 10,000 fc·h
例子:
将15 脚坎德尔小时转换为每平方厘米的管腔：
15 fc·h = 0.002 lm/cm²
| 脚坎德尔小时 | 每平方厘米的管腔 |
|---|---|
| 0.01 fc·h | 1.0000e-6 lm/cm² |
| 0.1 fc·h | 1.0000e-5 lm/cm² |
| 1 fc·h | 0 lm/cm² |
| 2 fc·h | 0 lm/cm² |
| 3 fc·h | 0 lm/cm² |
| 5 fc·h | 0.001 lm/cm² |
| 10 fc·h | 0.001 lm/cm² |
| 20 fc·h | 0.002 lm/cm² |
| 30 fc·h | 0.003 lm/cm² |
| 40 fc·h | 0.004 lm/cm² |
| 50 fc·h | 0.005 lm/cm² |
| 60 fc·h | 0.006 lm/cm² |
| 70 fc·h | 0.007 lm/cm² |
| 80 fc·h | 0.008 lm/cm² |
| 90 fc·h | 0.009 lm/cm² |
| 100 fc·h | 0.01 lm/cm² |
| 250 fc·h | 0.025 lm/cm² |
| 500 fc·h | 0.05 lm/cm² |
| 750 fc·h | 0.075 lm/cm² |
| 1000 fc·h | 0.1 lm/cm² |
| 10000 fc·h | 1 lm/cm² |
| 100000 fc·h | 10 lm/cm² |
规则