An interesting use of POV-ray!
From looking at your patent pages in Firefox's built-in PDF viewer, it seems
that the images have been down-sized to a *low* greyscale resolution--i.e.,
compressing them into something like 4-bits of greyscale tones or less-- or else
the images were scanned(?) for printing, with a coarse-dot 'screen' during the
scan. (Sorry if I'm not explaining that well.) In other words, the POV images
look like a coarse newpaper rendition (which eliminates much of their detail and
tonal differences.) I'm curious if that's a normal result when submitting
higher-resolution/contiuous tone artwork to the patent office.
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