We study numerically a Swift-Hohenberg equation describing, in the wea
k dispersion limit, nascent optical bistability with transverse effect
s. We predict that stable localized structures, and organized clusters
of them, may form in the transverse plane. These structures consist o
f either kinks or dips. The number and spatial distribution of these l
ocalized structures are determined by the initial conditions while the
ir peak (bottom) intensity remains essentially constant for fixed valu
es of the system's parameters.