Glass Visible Light Transmittance

[oconv]

I need to visualize glazings with different light transmittance values (VT: visible transmittance, eg. 0.35, 0.55, 0.65)
Where in the glass window neutral material can I ajust these settings?

[Micha]

If I understand you right than refraction color should work for you.

[oconv]

Would be great, if Chaos could integrate some of these real world architectural glass types into the library.
https://www.glassonweb.com/article/p...-glass-facades

[Peter.Chaushev]

Can confirm, this is done entirely through the Refraction color (use the Color Space: Rendering option of the V-Ray color picker).

The formula you are looking for is refractionValue^sheetsCount = lightTransmittance
Solved for the refraction value and a target light transmittance:
refractionValue = lightTransmittance^(1 / sheetsCount)

Sheets count is essentially each surface which refracts rays - a single glass pane has 2 sides (front/back).
For example, a simple glass pane with the transmittance you mentioned should be set up in V-Ray with approximate Refraction color of RGB: 0.59, 0.74, 0.81

Would be great, if Chaos could integrate some of these real world architectural glass types into the library.
https://www.glassonweb.com/article/p...-glass-facades

Notified my colleagues from the Cosmos team about your request.

Kind regards,
Peter