Brief description of the focussing of a monochromatic radiation and the optical phase shift implementing said method.

摘要

P the invention relates to the construction of the apparatus and optical instruments. / p & & p & the process according to the invention is characterizes in that the phase modulation is effected as a function of the phase and of the intensity of the monochromatic radiation is focused and / 00307 required of the intensity in the region of the focusing, it established a correlation between the points of the wavefront to focus and the points of the region of the focusing of such a manner that at each point of the wavefront a focus corresponds to a single point of the region of the focusing. The optical element, for the implementation of the process is present in the form of a layer of phase a reflection or transmission1 having on one of its surfaces zones5 each of which has a relief continu6 and is characterizes in that the height of said relief6 and the shape of said zones5 vary according to the phase and the intensity of the monochromatic radiation has focaliser2 / 00307 and according to the intensity of the radiation is focused in the regions of focalisation3. / p & & p & the invention can be used in the laser technique used in industry. / p