3D printed diffusers pt.2

Starting from my research discussed in 3D printed diffusors, I designed somewhat of a hybrid that aims to consolidate all positive traits of the previous diffusers and incorporate the maxims I postulated at the end of the post.

The main points of this design are:

1. Compactness - the sources of light are arranged at an angle at the top and bottom behind the screen so that the circle of light is maximized.
2. Alignment - the intermediate diffuser is curved so that the light on it is approximately in the correct position for the screen.
3. Refraction - the light changes media 4 times before exiting the diffuser.
4. Distance - the sources of light are as far as possible from the screen.

The resulting illumination on the screen is very good compared to the trials:

But looking at the solarized version of the screen image, two problems can be identified.

1. The layer times are very visible on the screen and the intermediate diffuser, causing stripes to appear.
2. There is falloff on the side.

I plan to address these issues in the following ways:

1. Since striping was never a problem with the diffusers in the first post where the screen was thicker than one layer, the screen and intermediate diffuser will be thickened to at least two layers.
   
2. The sources of light will be rearranged to decrease distance from the sides.