or lenses that are flat on one side. Biconvex lenses can be constructed by gluing two planoconvex lenses back to back, which is done with an acrylic glue, in this case Acrifix adhesive.

The 39323 Focusing Lens is used with the 77259 Focusing Lens Assembly. It is a 1.5 inch (38.1 mm) diameter, UV Fused Silica, Bi-convex Lens with a 51 mm Focal Length. Bi-convex lenses are for imaging ...

Allows light to pass through as it enters the eye. Lens Transparent, bi-convex, flexible disc behind the iris. It is attached to the ciliary muscles by the suspensory ligaments. Refracts light to ...