Researchers have used the centuries-old idea of pinhole imaging to create a high-performance mid-infrared imaging system without lenses. The new camera can capture extremely clear pictures over a ...

The old-fashioned camera obscura is a box with a pinhole in one side and a viewing screen on the other. When the box is pointed toward an object, an image of the object appears on the screen. The ...

Researchers use laser light to form a tiny “optical pinhole” inside a nonlinear crystal, which also turns the infrared image into a visible image that a traditional silicon-based camera sensor can ...