Light amplication device for reproducing micro:information - has bulb and transparent microfiche followed by electron optical system

摘要

The light amplification device is used for reproducing micro information. The quantity of light originating from the object to be reproduced on the sheet is reduced. This means that it will require a smaller light energy source thereby resulting in the saving in the energy. The system consists of an ordinary bulb and a transparent information carrier in the form of a microfiche. This is followed by an optical system and a transparent sheet (18) formed from glass or plastic and coated with an electrically conducting layer (20). There is a second transparent sheet with a conducting layer (24) and a potential (26). There is a unit which defines a photogravure grid system of points of the electron optical medium which will consist of points with a uniform intensity over the surface.