The invention relates to a lens assembly using a LC coded aperture, and the configuration is as follows. A lens assembly including: a front lens element, having a first lens, placed on a first surface of a LC coded aperture; and a rear lens element having a second lens placed on a opposite surface of the LC coded aperture, the rear lens element being housed in a lens barrel, in which the rear lens element includes an upper surface and a side wall, the LC coded aperture is placed over an upper surface of the rear lens element, a flexible circuit board is connected to the LC coded aperture, a notch is formed in the wall of the rear lens element at a place corresponding to the flexible circuit board, which is pulled out to an outside through the notch from an upper part of the lens barrel.