William, you really haven't researched this at all.

Oh, but I did. I asked the direct question as to how one was supposed to
reverse a presumably non-removable lens. All you need have said was that some
cameras have the lenses mounted with screws that can be removed. The
discussion would have ended amicably at that point.

I assume this is what you are talking about.

http://diybio.org/2009/12/13/webcam-...ks-at-bosslab/

I do not see what connection this has with the subject of the original post.