Lenspedia

Introduction
Welcome to Lenspedia ! The wiki about lenses! Lenses are clear objects which focus some form of radiation, presumably light, onto another object. Lenses can be a wide kind of things. from plastic chips to drops of water on your body, you can find lenses in all kinds of places.Lenses are classified by there shape and how they re-direct light (or any other radiation) in what direction. The two major lense-types are convex, and concave. The more detailed list of lenses includes: biconvex, biconcave, planoconvex and planoconcane, convex-concave, and the meniscus lens.

biconvex
Biconvex, or just convex, means bulging outward or curved outward