Injection molding seemed easy—until I tried machining a double convex lens mold. From surface finish to mold alignment, this “simple” project got real fast.

which resembles a plano-convex lens," wrote the team in its published paper. "We vary the size and curvature of the droplets by changing the droplet volume, resulting in a variable focusing effect." ...

Lenses are used in all optical instruments, like microscopes, telescopes, cameras, projectors etc. It is also of two type’s concave and convex lens. This article deals with mirror and lenses in ...