Parameters of a Fluorescent Surface

Note: You can use the spectrum editor to select .spectrum files. The description is then added in Spectrum box. When saving, spectrum data of these files is directly included in the fluorescent surface file so that .spectrum files are no more used. For more details, you can view Spectrum Editor.

Note: You can use the spectrum editor to select .spectrum files. The description is then added in Spectrum box. When saving, spectrum data of these files is directly included in the fluorescent surface file so that .spectrum files are no more used. For more details, you can view Spectrum Editor.

Note: This surface is similar to Advanced Scattering Surface. It is the same behavior for non-fluoresced light (light that does not change wavelength). The model also takes another absorption spectrum which is dedicated to fluorescence absorption: that is the absorption spectrum you can select. Part of the light absorbed by this spectrum, will be re-emitted by a fluorescence process: this amount is the efficiency. The fluoresced light is re-emitted according to the Lambertian fluorescence spectrum. Re-emission is achieved in a lambertian way either in reflection or in transmission. Reflection and transmission always equals 100%. This is the only way you can enter reflection: transmission is computed automatically.

If you want to emit fluoresced light only on the reflection side of the surface, the reflection must be set to 100%. If you are modeling a thin film by applying this surface definition on a surface (as opposed to a volume body) then 50% lets the fluoresced light to be re-emitted equally on both sides of the surface.