Energy saving greenhouse screen

A greenhouse screen comprising strips of film material that are interconnected by a yarn system of transverse threads and longitudinal threads by means of knitting, warp-knitting or weaving process to form a continuous product, and at least some of said strips comprise a film material in the form of a single- or multilayer polyester film provided with a first anti-reflective coating on a first side of the film and a second anti-reflective coating or an anti-reflective layer on a second side of the film, said film material has a transparency of at least 93.5%, wherein said anti-reflective coating(s) has a refractive index at a wavelength of 589 nm that lies below 1.64, and said anti-reflective layer has a refractive index at a wavelength of 589 nm that lies below 1.64 when measured in the machine direction (MD).