1 min readLuminance ImageRobert E. LewisWeb Community ManagerMar 17, 2015 Image Article An example of a luminance image taken with LETF's imaging colorimeter. NASA An example of a luminance image taken with LETF’s imaging colorimeter. The light source is a 30 watt RGB LED array that is only 1 inch square. Share Details Last Updated Aug 17, 2023 EditorRobert E. Lewis Related TermsHuman Health and Performance