Abstract: An arrangement of light wave conductors are correlated with the sensor areas of an image sensor array. The individual light wave conductors consist of glass wafers or glass fibers whose width or diameter each corresponds to the width of a sensor area. The light wave conductors are joined to form a block whose top surface area corresponds to the area of a document to be scanned line by line.

Abstract: An optical document scanning apparatus of high resolution employs diaphragms defined by a line array of spaced opaque areas which are located midway between an object plane and an image plane containing a line array of spaced light sensors. The object plane is illuminated from a light source located in the image plane parallel to said line array of light sensors. The distance between object and image planes is twice the distance from the lead edge of one light sensor to another and the opaque areas defining the diaphragms are located opposite the areas between light sensors to restrict exposure of the light sensors substantially only to light diffusely reflected from the object plane which is normal to the light sensors thereby to achieve high resolution.