Lens is a transparent glass which is bounded by two spherical surfaces. The light rays are refracted after passing through the lens. It is of two types, convex lens and concave lens.

A plano-convex lens is compose of a plane and convex surfaces, has a positive focal length.It is used for the changing between point light source and parallel beam.It is mean when the light through ...

BR Optics sits between the concave and convex lens elements in the lens barrel, allowing wavelengths of light to converge to a single point. The 85mm is the first RF lens to integrate Canon’s Blue ...

We compare and contrast concave and convex lenses by drawing ray diagrams.

In a telephoto lens, the magnification of the subject is achieved through a combination of convex and concave lenses. In its simplest form, a convex lens on the outside converges light.

A convex lens of focal length 25 cm and a concave lens of focal length 10 cm are placed in closed contact with each other. Calculate the lens power of the combination.

Lenses can either be convex/ converging or concave/ diverging. Convex lenses take parallel light rays from distant objects and bend them to converge at a single point known as the focal point.

3. Shape of Optical lens: Plano lens,bi convex lens,bi concave lens, ball lens,Spherial lens 4. Inside quality of Optical lens: clear and transparent, no mold marks, no inside bubble and dirts, 5.