In a significant development for “lens-less” imaging, a research team from the School of Engineering, Tokyo Institute of Technology (Tokyo Tech), has devised a new image reconstruction method ...

These two convex surfaces have the same radius of curvature, and the lens focuses parallel rays of light to a single point beyond the lens. Double convex lenses play an important part in many imaging ...

A double-convex lens is compose of two convex surfaces, has a positive focal length. Normally Bi-Convex lenses are most suitable where the object and image are on opposite sides of the lens, and are ...

In this Closer Look segment on Lenses, we compare and contrast concave and convex lenses by drawing ray diagrams and investigating the thin lens, magnification, and center of curvature equations.