Actually it appears to be the spatial pattern of absorption of around 6 million photons. So technically it is a shadow, but it's not like you are flashing an at

Actually it appears to be the spatial pattern of absorption of around 6 million photons. So technically it is a shadow, but it's not like you are flashing an atom from the right and taking a picture from above. I'd like to know more about Fresnel lens aberrations to have an opinion about the feasibility of such a measure.