millilambert

/ˈmɪlɪˌlæmbərt/
noun
  1. A unit of luminance equal to one thousandth of a lambert, used in photometry.
    • The screen's brightness was measured at 15 millilamberts.
    • Older light meters sometimes give readings in millilamberts.
    • The display emits about 20 millilamberts of light.