NOVELTY - The method comprises extruding a thermoplastic composition into a sheet, laminating the sheet to a substrate, stamping or embossing a pattern onto the laminated sheet to form a light concentrating article such as a refractive lens, and coating a portion of the refractive lens with an antireflective coating. The light concentrating article is capable of concentrating 1.02-2000 suns of solar energy onto solar cells, and comprises an ionomer composition, which comprises or is prepared from an ionomer having a temperature onset of creep and a peak melting temperature.    USE - The method is useful for making a light concentrating article such as a refractive lens, which is useful in a concentrator solar cell module (all claimed) and for capturing the light shining on a larger area and casting, directing, refracting or focusing the light onto a smaller area, where the article further includes a dichroic filter and the refractive lens consists of a shaped incident encapsulant layer, a cover slide and glass comprising a converging lens, a simple lens, a complex lens, a biconvex lens, a plano-convex lens, a positive meniscus lens, a plano-concave lens, an aspheric lens, an inflatable lens, a Fresnel lens, a linear Fresnel lens, a linear arched Fresnel lens, a point focus Fresnel lens and/or a segmented Fresnel lens.    ADVANTAGE - The method is capable of economically and easily making the light concentrating article with high efficiency and clarity, low haze, sufficient impact resistance and good processability thus enhancing electricity production efficiency of the solar cell.    DETAILED DESCRIPTION - The method comprises extruding a thermoplastic composition into a sheet, laminating the sheet to a substrate, stamping or embossing a pattern onto the laminated sheet to form a light concentrating article such as a refractive lens, and coating a portion of the refractive lens with an antireflective coating. The light concentrating article is capable of concentrating 1.02-2000 suns of solar energy onto solar cells, and comprises an ionomer composition, which comprises or is prepared from an ionomer having a temperature onset of creep and a peak melting temperature, where the temperature onset of creep is 8 degrees C higher than the peak melting temperature. The method consists of an injection molding process, an injection overmolding process, an extrusion process, a cast film or sheet process, a blown film or sheet process, a blow molding process, a vacuum forming process, a compression molding process, a transfer molding process, a profile extrusion process, and secondary forming processes consisting of bending, stamping, embossing, machining, laminating, adhering and metallizing. The extruding, stacking and stamping or embossing steps are carried out to form a patterned laminate that is the light concentrating article. An INDEPENDENT CLAIM is included for a concentrator solar cell module.