Solving an Inverse Lighting Problem in Daylighting Design Using Radiance

 

Luis Fernandes

Lawrence Berkeley National Laboratory

 

An inversion of part of the daylighting design process can be

useful in shortening design time and maximizing the number of options

that can be considered in the early design stage. A three-step method

has been developed to perform such an inversion for the selection of

fenestration systems according to lighting performance goals. The first

step of the method poses an inverse lighting problem: given the desired

lighting performance goals in a space, what are the characteristics of

the light source that will come closest to achieving those goals? This

talk will briefly present the complete method and, in more detail, a

solution to the inverse lighting problem by using the Radiance lighting

simulation software.