Apparatus for producing a record of an object field in which substantially perspective change in one direction only is recorded. The apparatus comprises elongate aperture means (35) and an array of lens elements (34) which extends in two dimensions and is disposed in an image field. Each lens element...http://www.google.co.uk/patents/US4668063?utm_source=gb-gplus-sharePatent US4668063 - Stereoscopic recording method and apparatus, and production method and apparatus