In a ray diagram, a converging lens is drawn as a vertical line with outward facing arrows to indicate the shape of the lens. Key point The focal length f of a converging lens is defined as the ...

The lens came attached to a Fischer Imaging TV camera which was supposedly part of the Fluorotron line of systems used for X-ray imaging.

A diagram of Google's smart contact lens with integrated camera As you can probably imagine, there are some rather amazing applications if you have two cameras embedded in your contact lenses.

OnePlus says it’s temporarily suspending a camera filter feature on its new smartphone after some users reported that it can see through certain objects and produce what looks like an X-ray ...