Lens

Key Stage 3

Meaning

A lens is a shaped piece of glass, or other transparent material, that can be used to focus an image of an object.

About Lenses

A lens can be convex or concave.

There is a lens in the eye that is used to focus an image onto the retina.

Glass lenses can be moved relative to a screen until an image is focused but the lens in the eye can change shape to focus light.