Pinhole (optics)

A pinhole in optics refers to a small aperture through which light passes, allowing for the formation of an image. The concept is most commonly associated with the pinhole camera, which is a simple camera that uses a tiny hole instead of a lens. ### Key Features of Pinhole Optics: 1. **Image Formation**: Light from a scene passes through the pinhole and projects an inverted image on a surface opposite the hole.