Hi all,
I have a question for detector in non-sequential mode. We often use ‘nit’ to evalute the display system, but I did not find how to change the unit to ‘nit’ for detector in non-sequential mode like LightTools did, so is there anyway that it can be directly displayed in Zemax or we have to export the data from Zemax and do some conversion?
Thank you,
Kaden
Nit is a unit of Luminance (Nit = cd/m^2 = lumen/[sr m^2] ), so to get this at a detector in non-sequential you will need to go to your system explorer > Units. Set source units to Lumens and analysis units to Lumens per M^2.
(Hey somebody at Ansys/Zemax, why does meter use a capital M here?)
In your detector viewer settings you should now be able to choose Luminance (position space) as an option under “Show Data”
Now your detectors will show Nits as Lumens / M^2 / Steradian, which is equivalent. No other conversion necessary.
I would refrain from using the Luminance/Radiance detector (position space) as it is.
It is just plotting the Incoherent Illuminance/Irradiance divided by 2PI, which is incorrect in almost all cases.
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