How to model a thick diffuser by using rand() function in a wavefront propagation system
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I am trying to implement a "thick" diffuser on a test object in a simple SLM (spatial light modulator) simulation. Right now, I can a simply model a simple diffuse illumination by multiply a rand() distribution to the test object. I want to somehow model the diffuser as a plane with varied thickness.
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Dhruv
2023-5-16
To model a thick diffuser using the “rand” function in MATLAB and Simulink, you can follow these steps:
1. Define the parameters of the diffuser:
• Thickness: Specify the maximum thickness of the diffuser.
• Resolution: Determine the number of samples along the thickness direction.
2. Generate a random distribution representing the diffuser thickness:
• Create a matrix of size [resolution x resolution] filled with random numbers between 0 and 1 using the “rand” function.
• Scale the matrix by the maximum thickness to obtain the random diffuser thickness distribution.
3. Apply the diffuser effect to the test object:
• Create a grid of points corresponding to the test object surface.
• For each point, add the diffuser thickness value from the generated distribution to the z-coordinate of the point.
Remember to adjust the parameters according to your specific simulation setup and desired diffuser characteristics. Hopefully the above steps will help you get started.
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