[Radiance-general] Modeling a film w/ 50% haze and 91% tranmission.

[Andrew McNeil]

Hi Tim,

Haze is the percentage of transmitted light which deviates from the
incident direction.  So you could interpret the haze to mean that 50% of
the transmitted light is diffused.

As a first approximation I would use trans with the following transmission
properties:
Ts = 0.455
Td = 0.455

Though with a haze of 50% assuming that the scattered light is lambertian
is a bit of a stretch.

Andy


On Mon, Mar 11, 2013 at 10:45 AM, Tim Perry <tim.v2.0 at gmail.com> wrote:

> Hello,
>
> I've been asked to model windows that have a film with 50% haze and
> 91% transmission.
>
> I do not have a BSDF for the material. The best option I can think of
> is to use the trans material with 91% transmission and hope that it
> provides about 50% haze. Does anyone have experience modeling film
> based on haze? If so, any pointers? A tutorial I should look at?
>
> Thanks,
> Tim Perry
>
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