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.