Fused Silica Precision Lenses for Solid State Laser applications

A biconvex lens is a positive lens characterized by a longer focal length in
the middle and shorter focal lengths at both ends. These lenses are used in a
wide variety of applications such as camera lenses, projectors, telescopes and
microscopes. Bi-convex lenses are often used to expand light beams. In this
article, we discuss the properties, functions, and applications of biconvex
lenses for beam expansion.
Bi-convex lenses are made of optical glass and are convex on both sides. The
center of the lens is thicker than the edges, which provides a focal point for
the light rays entering the lens. Light rays entering the lens are refracted
and converged to the focal point. The distance between the focal point and the
center of the lens is the focal length. The focal length of a biconvex lens
depends on the curvature of the lens and the refractive index of the glass.

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