US 12,436,399 B2
Multi-wavelength laser beam homogenizer-expander light engine
Jordi Luque, Valley (DE)
Assigned to LaserWorld AG, Lengwil (CH)
Appl. No. 18/869,366
Filed by LaserWorld AG, Lengwil (CH)
PCT Filed May 17, 2023, PCT No. PCT/EP2023/063312
§ 371(c)(1), (2) Date Nov. 26, 2024,
PCT Pub. No. WO2023/232483, PCT Pub. Date Dec. 7, 2023.
Claims priority of application No. 22175968 (EP), filed on May 29, 2022.
Prior Publication US 2025/0110342 A1, Apr. 3, 2025
Int. Cl. G02B 27/09 (2006.01); G02B 27/10 (2006.01); G02B 27/14 (2006.01)
CPC G02B 27/0916 (2013.01) [G02B 27/0927 (2013.01); G02B 27/0961 (2013.01); G02B 27/1006 (2013.01); G02B 27/141 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An optical device, comprising:
a laser source configured to emit a plurality of beams,
a first integrator for splitting a co-aligned version of the emitted beams into beamlets and
a second integrator, arranged coaxially to the first integrator, for shaping the beamlets into an output beam of a flat-top spatial irradiance profile, wherein
the first integrator and the second integrator each comprise two microlens arrays of equal focal length, the arrays being coaxially juxtaposed at a distance,
wherein the optical device further comprises two spherical plano-convex lenses arranged between the first integrator and the second integrator, the plano-convex lenses being coaxially juxtaposed with facing planar sides, and
wherein the optical device further comprises a first diffuser arranged between the plano-convex lenses and the second integrator.