ArchLIGHT Summit

Photometry in Action
Have you ever wondered how those mysterious .ies files are generated? Or how to compare the performance of one lighting fixture to another?

Photometry in Action is a hands-on workshop exploring luminaire photometry to be delivered using a bench-top goniophotometer fully capable of generating a complete luminaire photometric report, including luminous intensity and spectral data along with a .ies file.

Since many lighting designers have not had an opportunity to actually see the photometric measurement process, but use luminaire photometry in their analyses and designs, this workshop provides an opportunity to better understand the photometric process and the data designers are typically using.

The workshop will feature a “round-robin” rotation of one group of participants working with the bench-top goniophotometer to actually measure a luminaire, while another group is receiving a presentation of the elements of a representative photometric report, essentially covering the “anatomy” of a photometric report.

Luminaire selection criteria, such as luminance recommendations, will also be addressed.

The third portion of the workshop will be to create a full photometric report from the .ies file using photometry processing software. Each group will generate a report for the luminaire they measure and compare it against the luminaire selection criteria as well as the other group's luminaire.

Participants will leave with the photometric file, the .ies file, the photometric report, and access to the goniophotometer software for further exploration following the workshop.

Lighting designers have the power to transform spaces, impacting performance, emotion, and how people experience their world. Learn how we work as part of the larger design team, impacting projects at every scale, from individual rooms to city-scale urban design plans. We’ll talk about some of the upsides and downsides of this profession that balances art and science, and talk about why it may be the right profession for you!