The present invention relates to a method for producing an interference image, wherein the input beam is divided into two beams at path of which beams at least one stationary reflective unit (ZS1,ZS2) is disposed and wherein each of said beams after reflection from said reflective unit is directed onto a movable reflective unit (ZR), at which the optical path difference between said first and said second beams is produced, and then both beams are reversed back and subjected to interference. A double-sided reflective (ZR) unit is used as a movable reflective unit, which is arranged at a route of said beams reflected from the stationary reflective units and onto which both beams are simultaneously directed, and wherein the difference of optical paths between said two beams is produced by means of linear displacement of said movable reflective unit (ZR) in the direction determined by the course of beams from its reflective surfaces so that the displacement of the movable reflective unit equal to x causes the difference in optical paths between said first and second beams equal to 4x. The invention provides also a system for producing an interference image and an interferometer with such system.