Partial Mirror Modelling

radiance-general
1

Hi,

Is it possible to model a partial mirror in Radiance?

That is, a surface that reflects say 50% of light as a mirror and lets 50% pass through?

Thanks

2

you can use mixfunc and mix the mirror material with “air” (air can be modeled by glass with refraction index 1). You can use a static mixture (e.g.0.5) or a cal-file defining this fraction by angle of incidence.
hope that helps
Jan

3

You can also use the “trans” type if you don’t care to model any Fresnel effects. (I.e., you are OK with constant transmission & reflection at all incident angles, which is not the way a real half-silvered mirror behaves.)

-Greg