Abstract: An illumination apparatus includes a micro lens array (MLA) including periodically arranged micro lenses. The apparatus also includes an array of periodically arranged first radiation-emitting elements disposed at a first distance from the MLA and configured to generate, in cooperation with the MLA, a structured light pattern. The apparatus includes a plurality of second radiation-emitting elements disposed at a second distance from the MLA and arranged to avoid matching any periodicity of the periodically arranged micro lenses and configured to generate, in cooperation with the MLA, a beam for flood illumination. The first distance is greater than the second distance.

Abstract: A method for use in manufacturing an optical emitter arrangement comprises holding an electrically conductive base member and two electrically conductive base elements in a predetermined spatial relationship, and providing two electrically conductive projections, wherein each projection extends in a direction away from a surface of a corresponding one of the base elements and wherein each projection terminates at a corresponding outer end. The method further comprises bringing a projecting portion of a surface profile of a mold tool into engagement with an area of a surface of the base member whilst bringing other portions of the surface profile of the mold tool into engagement with the outer ends of the projections so as to form a void that extends away from the surface of the base member around the projecting portion of the surface profile of the mold tool and that extends away from the surface of each of the base elements around each projection without extending over the outer end of each projection.

Abstract: Flow barriers such as trenches (144) and/or walls (152) laterally surrounding an aperture (142) in a coating (140) on a transparent substrate (120) help control the flow of replication material (124) during the formation of a replicated optical element on the aperture (142).