We describe the creation of sets of 633-nm beamlets and their bending by supercritical CO2. Small temperature gradients within a cell that contains the fluid resulted large density-gradients that, in turn, are almost proportional to gradients of optical refractive index. The paths of such beamlets can be described quantitatively. Beamlets were made with a He-Ne laser-beam that impinged on an array of apertures. The transmitted light forms Fraunhofer