The invention provides a light generating
system (1000) comprising a first support (2100), a first 2D array (2110) of
first light sources (10), a first optical element (410), a second support (2200), a second 2D array (2210) of second light sources (20), and a second optical element (420) wherein: (A) the first support (2100) is configured to support the
first light sources (10) and the second support (2200) is configured to support the second light sources (20); the
first light source (10) is configured to generate first
light source light (11) and the second
light source (20) is configured to generate second
light source light (21); wherein the first light source (10) comprises a
laser diode and the second light source (20) comprises a
laser diode; wherein the first support (2100) comprises a first thermally conductive element (2160) and / or wherein the second support (2200) comprises a second thermally conductive element (2260); (B) a first optical element (410) arranged downstream of the first light source (10) and configured to collimate the first light source light (11) into a first
light beam (15) of collimated first light source light (11); a second optical element (420) arranged downstream of the second light source (20) and configured to collimate the second light source light (21) into a second
light beam (25) of collimated second light source light (21); (C) the first support (2100) and the second support (2200) are configured to be stacked, where the second support (2200) comprises an array (2220) of through holes (2250) configured to align with the first optical element (410) to allow at least a portion of the collimated first source light (11) to propagate through the second support (2200); (D) The light generating
system (1000) is configured to generate
system light (1001) comprising one or more of the first light source light (11) and the second light source light (21).