A new design method for a refractive-type laser beam shaper with an asymmetric shape is proposed. This beam-shaping technique is useful in pattern marking (e.g., logo marking or character marking), and also in local heat treatment. These applications could be realized using high-power lasers with beam intensity converters. A refractive-type shaper is superior to a diffractive-type shaper for these applications because of its lower optical power loss and simple fabrication method, which involves only conventional machining processes such as milling, grinding, and polishing. For a desired beam pattern, the shaper form is designed automatically using iterative calculations by applying the behavior of electrically charged particles. The beam elements are assumed to possess the same polarity of charge, which generates a repulsive force depending on the intensity of electric charge and distance between elements. Furthermore, the desired pattern elements are assumed to possess contrary polarities, so that every beam element is effected of attractive force from all desired pattern elements. For no optical path crossing, the adjacent relations of elements are maintained throughout iterations. This design method was verified via testing in order to redistribute uniform collimated radiation into a single focused point. As a result, a paraboloidal surface was obtained, which performs the same function as a convex lens. Furthermore, the marking function was demonstrated by redistributing the character string “CIT” with 10,000 elements; the light pattern of the string was observed by the shaper.