title: Pinhead mirror: a previously undiscovered imaging device?
abstract: Investigating the source of a round patch of light in a dark hallway led to discovery of the pinhead mirror, a reflecting analog of the pinhole lens. Some pinhead mirrors were made and tested. The pinhead mirror's imaging characteristics appear to be similar to those of the pinhole lens.
authors.forename: T H
authors.initials: TH
authors.lastname: Nilsson