Survey of Pinhole Optimization

When the pinhole is used as an optical lens, it is found to have an essentially infinite depth of focus. This attribute along with advantages associated with its simplicity made it very attractive for use as the lens in the closed-circuit television system used in a complex, computer-operated space flight simulator. The only dimension which can be varied to obtain maximum picture quality is the pinhole diameter. This article shows the results of a survey of published work on pinhole optimization.