A lighting assembly includes LEDs arranged at a surface of a substrate. Each optical element of a number of optical elements is proximate an associated LED such that each optical element overlies a single LED and each LED underlies a single optical element. Each optical element includes a first part, a second part and a third part. The first part includes a first curved surface and the second part includes a second curved surface that intersects with the first curved surface at a region between the first part and the second part. The first part and the second part each have a peak relative to the substrate, the peak being spaced from the region between the first part and the second part. The third part extends beyond the region between the first part and the second part in a direction away from the associated LED. Each optical element is configured to direct light from the associated LED so that the lighting assembly can illuminate a substantially rectangular region.