Vertical illuminance on a horizontal plane

questions regarding the handling of DIALux evo. (features, tools, options, settings)
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Vertical illuminance on a horizontal plane

Post by JKerpels » Fri Jan 13, 2023 3:25 pm

I was wondering the following: if a place a horizontal calculation plane on a project, and select the vertical illuminance parameter to be calculated on that plane, what exactly do the results mean? Since the plane is perfectly horizontal, there is no vertical component in the calculation plane? The resulting numbers do show a meaningful result, but I can't figure out what exactly is calculated in this scenario.


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Re: Vertical illuminance on a horizontal plane

Post by T.Magenheimer » Fri Jan 27, 2023 2:07 pm

Dear Joost,

Please read the following article of our DIALux evo knowledge base to hopefully answer your question: ... ion-object

The arrows in the icons of the respective parameters point in the direction from which the light comes. The name of the parameter refers to the orientation of the calculation area.

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