Optical fiber cathode ray tubes and copy machines using the same

摘要

An improved optical fiber cathode ray tube is provided which enables the recording of images on a recording medium with a high resolution even if the recording medium is disposed with an increased gap between the tube and the recording medium to prevent the mechanical contact therebetween. The tube is provided with a light transparent thin layer between the non-lens-like optical fiber face plate and the phosphor layer. The light transparent thin layer is a transparent plate and may include a spatial gap.