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 cd/m² = 1 pm
1 pm = 1 cd/m²
例子:
将15 每平方米烛台转换为光度测量：
15 cd/m² = 15 pm
| 每平方米烛台 | 光度测量 |
|---|---|
| 0.01 cd/m² | 0.01 pm |
| 0.1 cd/m² | 0.1 pm |
| 1 cd/m² | 1 pm |
| 2 cd/m² | 2 pm |
| 3 cd/m² | 3 pm |
| 5 cd/m² | 5 pm |
| 10 cd/m² | 10 pm |
| 20 cd/m² | 20 pm |
| 30 cd/m² | 30 pm |
| 40 cd/m² | 40 pm |
| 50 cd/m² | 50 pm |
| 60 cd/m² | 60 pm |
| 70 cd/m² | 70 pm |
| 80 cd/m² | 80 pm |
| 90 cd/m² | 90 pm |
| 100 cd/m² | 100 pm |
| 250 cd/m² | 250 pm |
| 500 cd/m² | 500 pm |
| 750 cd/m² | 750 pm |
| 1000 cd/m² | 1,000 pm |
| 10000 cd/m² | 10,000 pm |
| 100000 cd/m² | 100,000 pm |
规则