Patent ID: 11921306
Assignee: II-VI DELAWARE, INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 21:
22. The article of claim 21,
wherein the corresponding fractional areas occupied by the diffraction gratings of each wavevector subset is distributed among the different wavevector subsets by variation of corresponding numbers of individual diffraction gratings in each wavevector subset; or
wherein the corresponding fractional areas occupied by the diffraction gratings of each wavevector subset is distributed among the different wavevector subsets by variation of corresponding transverse areas of individual diffraction gratings in each wavevector subset or wherein the corresponding fractional area of the diffraction gratings of each illuminated subset occupied by each wavevector subset is distributed among the different wavevector subsets so as to result in the specified far-field illumination intensity angular profile for at least a portion of an output angular range that differs from far-field illumination resulting from only the zero-order-transmitted portions of the incident optical beams.