[sillysaurus3]

In the researchers’ prototype, however, display pixels do have to be masked from the parts of the pupil for which they’re not intended. That requires that a transparency patterned with an array of pinholes be laid over the screen, blocking more than half the light it emits.

[darkmighty]

This is required to create the intended light field, but the light field approach isn't the only one, you can do simple deconvolution also. I wonder how well that would work.