The scattering of light from crystalline polyolefins results principally from a correlation in crystal orientation described by an empirical Debye‐Bueche correlation functionf(r)=exp(−r/a) for crystals separated by distancer. A one‐dimensional theory is developed in which neighboring crystals may differ in orientation by a small angle ±&dgr;. A random‐walk theory results in the exponential correlation function where the correlation distance is given bya=Kd/&dgr;2for crystals separated by distanced. Kis a numerical factor which is ½ for crystals confined to a plane and ⅔ for crystals permitted to orient about a cone of apex angle &dgr; with respect to the preceding crystal. The extension to two dimensions is proposed by means of a computer simulation of the lattice, and preliminary results of such an analysis are presented.