Researchers have created a compact camera where the lens is replaced by engineered optics that can identify objects at ...

"They're so rare, and they're incredibly useful scientifically," said Conor O'Riordan of the Max Planck Institute for Astrophysics.

Draw a ray from the object to the lens that is parallel to the principal axis. Once through the lens, the ray should pass through the principal focus. Draw a ray which passes from the object ...

Flat lenses, such as metalenses ... or stepper," said Associate Professor Kuniaki Konishi from the Institute for Photon Science and Technology. "This is due to a special type of photoresist ...

In a ray diagram, a concave lens is drawn as a vertical line with inward facing arrows to indicate the shape of the lens.

Meticulous craftsmanship and advanced techniques shape every pair of eyeglasses with precision and care. From lens cutting to frame assembly, each step is executed with expert skill to ensure ...