- #1
QuestionsAsker101
Hi there, I am new to the Forum!
I have a little bit of a tricky Problem. I am trying to calculate the Contrast between two planes as seen here:
So I started by cutting the Problem in two Parts.
Part 1, The Monitor:
I know the Luminance of the Monitor X, and the reflectivity of the semi-transparent Plane A2 20%.
Therefor I know that I can now get the Luminance of the semi-transparent Plane by Assuming it as a plane with a smaller Surface A2* with the Luminance of 20% of the Monitor, because the distance of the monitor and the plane is very Small.
So this is where the Problems beginn: I don't know how to factor in the distance of the plane to the Eye, so that i can later compare it to the Plane A1.
The second Part of the Problem is the Wall:
The wall is seen from the same angle omega as the semi-transparent plane. The light that passes through the semi-transparent plane gets a factor of 0.34 from the degree of transmission.
I know how to calculate the luminous flux of the Wall, but can't quite get how to transfer the luminous Flux to a unit, that i can compare to the Luminance of the Monitor.
Can anyone here help me?
I have a little bit of a tricky Problem. I am trying to calculate the Contrast between two planes as seen here:
So I started by cutting the Problem in two Parts.
Part 1, The Monitor:
I know the Luminance of the Monitor X, and the reflectivity of the semi-transparent Plane A2 20%.
Therefor I know that I can now get the Luminance of the semi-transparent Plane by Assuming it as a plane with a smaller Surface A2* with the Luminance of 20% of the Monitor, because the distance of the monitor and the plane is very Small.
So this is where the Problems beginn: I don't know how to factor in the distance of the plane to the Eye, so that i can later compare it to the Plane A1.
The second Part of the Problem is the Wall:
The wall is seen from the same angle omega as the semi-transparent plane. The light that passes through the semi-transparent plane gets a factor of 0.34 from the degree of transmission.
I know how to calculate the luminous flux of the Wall, but can't quite get how to transfer the luminous Flux to a unit, that i can compare to the Luminance of the Monitor.
Can anyone here help me?
