What is lens?

A lens is like a special window that bends light to make things look bigger, smaller, or clearer.

Imagine you're looking at a toy car through a piece of glass, that’s kind of what a lens does! It's a curved piece of material, usually made from glass or plastic, and it helps change how light travels into your eyes. When light goes through the lens, it bends, just like when you look at a straw in a glass of water, it seems bent too.

Think about a magnifying glass. That’s a simple kind of lens. When you put it close to something small, like a drawing or a letter, the picture gets bigger, almost like it's zooming in on the object!

Or imagine you're wearing glasses when you read a book. The lenses in your glasses help your eyes see the words more clearly by bending the light just right.

A lens can also make things look closer or farther away, depending on its shape and how thick it is, kind of like a magic trick for your eyes!