Our biconvex lenses are most suited to applications where the object and virtual images are on different sides of the lens. Ideally, the conjugate ratios (ratio of the image and object distances) will ...

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 ...

Snap is said to be working on a collection of "smarter lenses" that would let users overlay virtual images and objects onto landscapes in the real world, "not just faces," and let them interact ...

Apple's system would first identify an object such as "a finger, a stylus or some other optically opaque object." Next, it would identify the "planar or non-planar" surface.