Music video by Justin Bieber performing Never Let You Go. (C) 2010 The Island Def Jam Music Group. #VEVOCertified on November 9, 2010. http://www.youtube.com/vevocertified.
Lumens are a unit of measurement of the total brightness that comes from a light source, in this case, a projector. One may also see the term ANSI Lumens. ANSI is an acronym for the American National Standards Institute. In general, the more lumens a projector has, the brighter the image on the screen.
Headlamp Light Output (Lumens) Lumens are a unit of measure that gauges the total quantity of light emitted in all directions by a light source. Typically, a light with a high lumens count will consume energy at a higher rate than a light with a lower lumens number. So, the higher the lumens, the brighter the light? In most cases, yesâbut not always. How well a headlamp maker focuses and directs that light can impact how those lumens are utilized.