[photo-3d] Holmes Viewer Lenses

["Greg Tank" <tankergt@xxxxxxxxxxx>]

Linda wrote:
>I understand that Holmes viewer lenses are
>(or can be) made by cutting a "normal lens" in half. I presume this is
>done and then the halves reversed so that the thick edge is on the
>outside of the pair not the inside. [An individual closeup + diopter
>lens is thick in the middle, unlike - diopter lenses as for myopia
>correction which are thick on the edges.]

Linda is correct, the lens can be cut in half using a hack saw or scroll
saw. I had great success using the following lense from the Surplus Shed. I
cut it in half and the resulting lenses are thin on one edge and thick on
the other, just like most of the Holmes viewers.
71mm Diameter Ophthamic Lens - Made of CR39 hard optical plastic.. Is a
positive miniscus lens for eyeglasses. About 160mm focal length. $1.50 each
or 10 for $10 1-877-778-7758

That's all for now,
Greg Tank