The first telescopes refracted light, and today reflectors dominate, but there is a third way to make light focus, and it ...

Engineers developed a groundbreaking flat lens that helps telescopes to capture color while detecting light from far away ...

For centuries, telescopes have relied oncurved glass lenses to bend light and bring the cosmos into focus. While effective, ...

A team of scientists at the University of Utah has designed a flat lens that matches the power of traditional curved lenses ...

Once through the lens, the ray should pass through the principal focus. Draw a ray which passes from the object through the centre of the lens. Some ray diagrams may also show a third ray.

For centuries, the optic lens has bent light through translucent, curved material, but now flat lenses are reimagining the ...