English to Italian Tech/Engineering Electronics / Elect Eng strongly widening beams

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The homogeneity of the lighting result increases only little when the overlap factor increases further. The ratio of the overlap factor (O) to the number of lighting units (N) is preferably below 0.2. At a higher ratio, comparatively_ strongly widening beams_ are necessary, so that the light generated by the luminaire can be aimed less efficiently within the boundaries of the envisaged object and the possibilities of varying the distribution of the illuminance are limited.

Testo completo e disegni qui http://www.google.com/patents/EP0890059B1?cl=en

Grazie mille!
Natalia