In this present paper, we present a theoretical analysis relating the
type, power and the maximum number of the identical elements in the input
surface of the array, with its size, flux transfer efficiency onto the synthetic
image plane and the synthetic image quality. The numerical analysis results
enabled the design of two different planar thin-lens spatial integrator arrays
with optimized geometrical parameters and with different positive and negative
power values. A computer program has been developed to investigate the
performance of each array. The percentage of the outgoing rays, the average
transmittance of the array elements, the image width and the uniformity of the
transferred energy, have been evaluated and compared.