a micromirror array lens includes a plurality of micromirrors , and reproduces a predetermined free surface by controlling rotation and / or translation of the micromirrors . the micromirror is controlled by control circuitry , upheld by a mechanical structure , and includes a reflective surface . the predetermined free surface of the lens is changed by controlling rotation and / or translation of the micromirrors . the micromirrors are arranged in one or more concentric circles to form the lens . the micromirror has a fan shape , a hexagonal shape , a rectangular shape , a square shape , or a triangle shape . the reflective surface of the micromirror is substantially flat . the control circuitry is constructed under the micromirrors by using semiconductor microelectronics technologies . the micromirrors are actuated by electrostatic and / or electromagnetic force . the reflective surface of the micromirror is made of materials with high reflectivity . the lens is used for an imaging apparatus , video monitoring camera , a camcorder , etc .