DEVICE FOR IMPROVING RESOLVING POWER AND RELATIVE INCREASING DEPTH OF FOCUS OF THE MAGNIFYING SYSTEMS, FAVOURABLY MICROSCOPES

The depth sharpness increasing device has an image forming layer (6) inserted between a primary (5) and secondary magnifier (7) of the composite magnifying system, in respect to the travel of the beam after the object (4) in the image plane of the primary magnifier. The layer is formed by independent particles dispersed in a medium, the index of refraction which differs from that of the particles. The image forming layer is displaceable in the image plane so that miages coincide with the object plane of the secondary magnifier. - The primary magnifier may consist of a primary objective and primary ocular or projector, while the secondary magnifier comprises a secondary objective and a secondary ocular or projector.