US 12,253,685 B2
Asymmetric input intensity hexagonal homogenizer
Connor L. Magness, Tucson, AZ (US)
Assigned to LEONARDO ELECTRONICS US INC., Tucson, AZ (US)
Filed by LEONARDO ELECTRONICS US INC., Tucson, AZ (US)
Filed on Sep. 16, 2020, as Appl. No. 17/022,767.
Claims priority of provisional application 62/901,078, filed on Sep. 16, 2019.
Prior Publication US 2021/0080736 A1, Mar. 18, 2021
Int. Cl. G02B 27/09 (2006.01); G02B 3/00 (2006.01)
CPC G02B 27/0961 (2013.01) [G02B 3/005 (2013.01); G02B 3/0062 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An optical beam homogenizer, comprising:
a first hexagonal microlens array having a plurality of hexagonal lenslets, wherein each lenslet has a hexagonal clear aperture; and
a second hexagonal microlens array spaced away from the first hexagonal microlens array at a focal length of the first hexagonal microlens array and having a plurality of hexagonal lenslets, wherein each lenslet in the second hexagonal microlens array has a non-hexagonal clear aperture of a different shape than the first hexagonal clear aperture,
wherein the hexagonal lenslets of the first hexagonal microlens array are rotatable relative to the hexagonal lenslets in the second hexagonal microlens array to adjust a ratio of an output width to an output height of a clear aperture of the lenslets of the second hexagonal microlens array, wherein an angle between the first hexagonal microlens array and the second hexagonal microlens array defines the output width and the output height of the clear apertures, and wherein the angle between the first hexagonal microlens array and the second hexagonal microlens array corresponds to an asymmetry of an input beam.