IES Light

This command allows an IES type light to be created in your document.

An IES light is a light file provided by some manufacturers. This file includes all light information (geometry, intensity,...)

Creation stages / Use:

Click the icon or select Visualization > Lights > IES Light... from the drop-down menu.

Select a point defining the light's position.
Select a target point which will be sighted by the light.
Enter the IES file path.
Enter the Cutoff angle. This is the half angle of opening of your cone of light. On the boundary of this angle, the obscurity is total. this option can be empty if the light is multi directional.
Select the color diffused by the light. The pipet allows to have the same color than a shape, another light, ...
Select the intensity (see below for explanation).
Validate by clicking .

Available options:

Intensity:

The light reflected at a point at the same intensity in all directions.

Enter the value of the luminous flux or the power of the light.

Also select the type of lamp (LED, halogen, incandescent, ...)

If the From IES file option is checked, the luminous flux,the power of the light and the type of lamp are field by the IES file. they can't be changed.

Light geometry:

Allows coming closer to the actual geometry of the source. Example: if you want to simulate a fluorescent tube, it is preferable to choose cylindrical geometry.

It is recommended to use the geometry defined in the IES file by selecting IES in the drop-down list.

The visible geometry option allows to show the lamp. It can also be hidden or shown with the contextual menu.

From the popup menu of a light (via the Lights folder in the entity tree or directly on the light in the graphic area) you can:

Switch a light on/off.
Edit and therefore modify the settings of a non basic light.
Basify a non basic light.

IES files can be downloaded on light manufacturers website.