Elite Software Light is Windows software for interior lighting layout that quickly computes the number of luminaires required to achieve a specified average illuminance in a room using the IES Zonal Cavity method. It supports both metric and English units, reads and converts IES photometric files from any manufacturer, and includes a large built‑in photometric library with hundreds of luminaires. The program manages large projects with up to 10,000 rooms and supports multiple luminaire libraries with up to 10,000 fixtures each, as well as up to three luminaire arrangement options per room. It is backward compatible with Elite’s DOS Light and automatically looks up and interpolates coefficient of utilization values as part of the Zonal Cavity workflow.

Key Features

IES Zonal Cavity calculations Accurate average illuminance sizing.

• Calculates exact luminaire requirements for a desired average lighting level.
• Uses the IES Zonal Cavity method, including CU lookup and interpolation.

Extensive photometric support Flexible, up‑to‑date fixture data.

• Supplied with photometric data for hundreds of luminaires; supports multiple libraries.
• Reads and converts IES photometric files from all manufacturers.

High project capacity Scales to large buildings.

• Allows up to 10,000 rooms per project.
• Stores over 10,000 luminaires on disk across libraries.

Layout options per room Design flexibility.

• Supports up to three luminaire arrangement options per room.
• Works in both metric and English units for international projects.

Compatibility and continuity Stable adoption.

• Backwards compatible with Elite’s DOS version of Light.

Benefits

Faster lighting layouts Reduce sizing time.

• Automatic CU lookup and interpolation accelerates room‑by‑room calculations.
• Batch handling of many rooms and large fixture libraries streamlines workflows.

Reliable, standards‑based results Support design reviews.

• IES Zonal Cavity method provides traceable illuminance calculations.
• Uses manufacturer IES files for realistic photometry.

Design flexibility and scalability Handle diverse spaces.

• Multiple arrangement options per room enable quick comparisons.
• Large project and library capacities fit multi‑floor and campus projects.