A lighting module having {TAIL ~ an array} of light emitting elements on a substrate, at least one diffractive optical element arranged to receive light from {HEAD ~ the light emitting elements} and partially collimate the light 
A lighting module having { TAIL ~ an array } of light emitting elements on a substrate , at least one diffractive optical element arranged to receive light from { HEAD ~ the light emitting elements } and partially collimate the light
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH