I experimented with some loupes and VR lenses, but was not satisfied with the results.
So I tried epoxy resin. I managed (by accident) to make a lens with a focus point of a few mm. The first results with this lens are promising, even though it no longer covers the whole display and I can now only use 128x128 pixels. The distortion caused by this lens gives my hologram a special touch. I hope :)

I held the lens directly in front of the eye and the camera directly on the other side. And the picture is not bad.