Optical angular filter

An angular filter comprising:

• an array of microlenses, a first array of openings in a layer of a first resin and a second array of openings in a layer of a second resin, the first resin blocking at least a first radiation and the second resin blocking a second radiation, different from the first radiation,
• wherein the first array is arranged between the array of microlenses and the second array,
• and wherein the openings of the first array have, in the direction perpendicular to the axis of the openings, a larger surface area than the openings of the second array, in said direction.