公开(公告)号：US20250020829A1

公开(公告)日：2025-01-16

申请号：US18350849

申请日：2023-07-12

Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION

Inventor： Philip W.C. Hon ,  Michael L. Dupuis ,  Shu-i Wang ,  Stephane Larouche ,  Sze Wah Lee ,  Katherine T. Fountaine

IPC: G02B1/00 ,  G02B13/02 ,  G02B13/14 ,  G02B27/00

Abstract: A telephoto lens assembly including a primary lens sub-assembly having at least one lens, and being operable to collect and focus light to an intermediate focal location. The assembly further includes a secondary lens sub-assembly having at least one refractive lens, and being operable to collect and focus light from the primary lens sub-assembly. The lens assembly also includes a metacorrector positioned relative to the secondary lens sub-assembly and being responsive to the focused light from the secondary lens sub-assembly, where the metacorrector includes a meta-structure that is configured to correct aberrations in the light, provide focusing/defocusing power and/or to remove residual secondary color in the light.