The generator directs a beam that pushes and flows past the object, striking a concave reflector on the other side.

The newest work is Anish Kapoor’s lacquered bronze concave reflector, which was made earlier this year.

Image is formed not by lens, but by concave reflector on distal layer of retina.

The surface of the blade was mirror-bright, a concave reflector that focused the sun's rays on a suspended trough collector above it.

The scallop has a tiny biological mirror at the back of each eye which acts as a concave reflector, focusing an image onto a retina containing 5000 light detectors.

First Hitchcock got the exterior shots in Canoga Park, using both actors, then later he had Elliott alone report to a soundstage where there was a large concave reflector set on the floor.

The light consisted of fifteen argand lamps, placed within smooth concave reflectors twenty-one inches in diameter, and arranged in two horizontal circles one above the other, facing every way excepting directly down the Cape.

They are considered so highly developed that they can be compared with a torchlight: a concave reflector in the back of the organ and a lens in the front guide the light produced, and the whole organ can be rotated by muscles.