Learning Forum

[vanesa.vladimirova.2018]

I'm using the Henyey-Greenstein bulk scattering model in Zemax to simulate light transport through biological tissue, and I have a question about the Transmission parameter.

I reviewed the source code for the DLL provided by Zemax. It reads the transmission value from data[51], validates it (clamps it to 1.0 if it's outside 0–1), and stores it in data[12]. However, I didn't see where the ray energy is actually reduced. So my question is: Is the transmission parameter applied at every scattering event and is it just a simple multiplication i.e. for a transmission value of 0.9 and a power of 1 W do we get 0.9 W?

Thanks in advance!

[Niki Papachristou]

Hi Vanesa,

Thank you for reaching out to us! I think that the DLL discribes the distribution of light scattered (the direction), the calculation of the transimission however for every scattering event is still done wihtin ZOS software. That is the reason you don't see it into the DLL source code.

I suspect that if you do some simple tests within ZOS you will be able to observe that.

Kind Regards,

Niki