公开(公告)号：US20210003833A1

公开(公告)日：2021-01-07

申请号：US16459693

申请日：2019-07-02

Applicant: Northrop Grumman Systems Corporation

Inventor： Alan Greenland ,  Robin Pruss ,  Christopher Jelen ,  Matthew Larsen ,  Shu-i Wang

IPC: G02B17/08 ,  G02B27/10 ,  G01J3/28

Abstract: An optical system in which an aggressively compact reflective front end is combined with beam splitting elements and refractive relay optics to allow several imaging systems working in widely different wavelength bands to share a common aperture. The aggressively compact design results in significant field curvature at the uncorrected intermediate or virtual focus, which is corrected in the refractive relay optics for each band's imaging path.

公开(公告)号：US10948702B2

公开(公告)日：2021-03-16

申请号：US16459693

申请日：2019-07-02

Applicant: Northrop Grumman Systems Corporation

Inventor： Alan Greenland ,  Robin Pruss ,  Christopher Jelen ,  Matthew Larsen ,  Shu-i Wang

IPC: G02B17/08 ,  G02B27/10 ,  G01J3/28 ,  G02B27/09

Abstract: An optical system in which an aggressively compact reflective front end is combined with beam splitting elements and refractive relay optics to allow several imaging systems working in widely different wavelength bands to share a common aperture. The aggressively compact design results in significant field curvature at the uncorrected intermediate or virtual focus, which is corrected in the refractive relay optics for each band's imaging path.

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.