The lamp datasheet states a total output power of 5800 lumens for this lamp. No specific wavelength data is given, so we will assume that a wavelength of .555 microns (the peak of the photopic response) is used.

A new ZEMAX file is opened. The wavelength is entered via the wavelength dialog box:

and the source units set to kiloLumens:

Importing the supplied CAD object is optional. The ray generation does not require the CAD model, but it can be useful. For example, if light is re-imaged on the source it is good to be able to specify reflectivity, scattering functions etc. Also, sometimes it is useful to trace rays back to the source object. This is particularly true in identifying troublesome rays. In automotive headlamp applications, rays which glare into oncoming drivers eyes can be traced back to the source to help identify improved baffling.

In this case, we import both the CAD object and the source ray set. A Source File object is used to import the rays:

with the result: