Dear Caroline,
I’d recommend to combine the radiance materials glass and trans assigned to two planes.
-
With the material glass you take into account the angular reduction of transmission (which the trans material doesn’t have). To achieve a transmission of 2.5% you should use for the R, G and B value of (2.5% * 1.088579).
-
To give the roller blind a diffuse transmission you can add the material trans to the second plane. Here you should use for the R, G and B value 1 (100% transmission). The diffuse part of transmission you can control via the 7 th parameter (0 = all diffuse).
Hope this helps.
Kind regards
Andreas
ALware Andreas Lahme
Leopoldstr. 7a
D-38100 Braunschweig
GERMANY
Fon: +49 . 531 / 250 72 - 80
Fax: +49 . 531 / 250 72 - 81
Mail: [email protected]
Internet: www.alware.de
···
-----Ursprüngliche Nachricht-----
Von: Radiance general discussion
Gesendet: 15.02.2006 18:39
An: [email protected]
Betreff: [Radiance-general] simulation of an internal roller blind
Dear Radiance-users,
I would like to simulate in RADIANCE an internal roller blind, which has
according to the supplier (unfortunately they do not know more) the
following properties:
as optical properties(reference to T65):
transmission: 2,5 %
reflection (to the outside): 71,8 %
could anybody give me please a hint which is the best way to implement this
in RADIANCE?
I could accept a simplification, but what kind of material is the best
choice to do so (glass, trans)?
Has anybody experiences with this?
I would appreciate any help,
sincerely yours,
Caroline
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