Manufacturers offer the same housing at several outputs, such as 2,000, 3,000 and 4,000 lumens, and designers and sales reps refer to these as lumen packages. Choosing the package is the main lever for hitting target light levels without changing the layout. On submittals, a mismatch between the specified lumen package and the one ordered is one of the most common errors.
Drop the corridor downlights to the 1,500 lumen package, the calc shows we're at 300 lux where we only need 100.
Also heard as
- lumen output option
- output package
Related terms
Luminous flux
The total amount of visible light a source emits in all directions, weighted for the eye's sensitivity and measured in lumens.
Cut sheet
The one- or two-page manufacturer data sheet for a luminaire, with dimensions, photometry and ordering options.
Lumen
The unit of total visible light leaving a source, with each wavelength counted by how bright it looks to the eye.
Point-by-point
A lighting calculation that predicts illuminance at each point on a grid from every luminaire's photometric data.