Convert Apostilbs to Millilamberts
Convert Apostilbs (asb) to Millilamberts (mL) instantly and accurately.
Conversion Formula
mL = asb × 0.1
About Apostilbs
The apostilb (asb) equals 1/π cd/m² ≈ 0.3183 cd/m², defined as the luminance of a perfectly diffuse Lambertian surface with an exitance of 1 lm/m². Introduced by the CIE in 1940 and used in European photometry standards and retinal illuminance calculations. 1 asb = 1/π cd/m² ≈ 0.3183 cd/m².
About Millilamberts
The millilambert (mL) equals 10/π cd/m² ≈ 3.183 cd/m². Historically used in the United States to specify projection screen luminance and oscilloscope phosphor brightness. A projection screen with luminance 1 mL ≈ 3.18 cd/m². Largely superseded by cd/m² and foot-lamberts in modern display standards. 1 mL = 10/π cd/m².
Quick Reference Table
| Apostilbs (asb) | Millilamberts (mL) |
|---|---|
| 1 asb | 0.1 mL |
| 2 asb | 0.2 mL |
| 5 asb | 0.5 mL |
| 10 asb | 1 mL |
| 25 asb | 2.5 mL |
| 50 asb | 5 mL |
| 100 asb | 10 mL |