Abstract: The invention relates to a method of manufacturing prisms, particularly microprisms and beam-splitting prisms, including the following steps: a) producing rectangular plates (1), b) fixing a larger number of these plates at their plate surfaces (2) to form a rectangular block (4), c) processing at least one face (support face 5) of the block at a right angle relative to the plate surfaces, d) rearranging the plates of the blocks so that all plate surfaces are aligned at an angle .alpha..sub.1 and that the sharp edges of the plates are placed in contact with the alignment plate (6), e) cementing of several displaced blocks with their cover faces (11) to a carrier body and grinding and polishing the support face (5), f) multiple repetition, if necessary, of steps d) through e) with different angles adjustments .alpha., g) rearranging the plates of the blocks so that all plate surfaces are arranged at an angle .beta.