Support for IES light sources

Support for IES light sources

New Ocean 2014 feature!

The light source system has been completely redesigned in Ocean 2014. A lot of new features will be available, but the most important one is probably the support for IES light sources. IES is a standard format for describing light source distributions, and is widely used for all kind of lighting devices from building to automotive.

Technical details

Two new emitter types have been added : planar IES and sphere IES. They both work with type A, B and C IES files, which is quite unique.

  • Planar IES is suited for any kind of emitting surface, and will ensure that any elementary surface will emit according to an hemispherical distribution derived from IES data, and aligned with its normal. As the distribution rotates with the surface normal, it is more suited for planar light sources. It is mostly designed for lights with no or little backwards emission, such as car lights, ceiling integrated spots, and all area lights.
  • Spherical IES is suited for spherical emitting objects. It ensures that the full sphere emits according to a complete IES data. It is mostly designed for lights emitting in all directions, and not only in a hemisphere, such as candle lights, hang luminaries, non focused bulbs, etc…

As IES data only provide light intensity values and no color or spectral information, it is up to the user to choose the light spectrum for the source. This spectrum is automatically scaled to preserve the IES light intensity.

First images!

Working with IES data in Ocean 2014 is straightforward and already produced nice results! All these images were done with the new IES emitter types, associated with a 6500K blackbody base emission.

Sports flood light distribution from a manufacturer IES file
Sports flood light (type B)
Street light distribution from a manufacturer IES file
Street light
Diffuse light distribution from a manufacturer IES file
Diffuse light
Spot light distribution from an IES file
Spot light
Street light distribution from an IES file
Another street light
Spot light distribution from a manufacturer IES file
Indoor ceiling light

For more information and a demonstration of IES support, please contact : info@eclat-digital.com