公开(公告)号：US10520360B1

公开(公告)日：2019-12-31

申请号：US16050060

申请日：2018-07-31

Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION

Inventor： Michael L. Dupuis ,  Daniel K. Smith ,  Daniel Lam ,  Christopher J. Lieto ,  Michael E. Farey ,  Joshua E. Rothenberg

IPC: G01J1/42 ,  G01J1/04 ,  G01J1/44

Abstract: A beam quality measurement system for determining beam quality of a high power laser beam from a laser system by power-in-the-bucket (PIB) measurements in a laboratory environment. The system includes a beam compressor assembly for compressing the diameter of the laser beam, and a diagnostic bench assembly that receives the reduced diameter low power beam from the beam compressor assembly. The bench assembly includes a pinhole array positioned at a focal plane of a lens and that includes a plurality of different sized pinholes and a translation stage for moving the pinhole array. The bench assembly also includes a power meter that receives the focused beam after it has passed through a pinhole in the pinhole array, where the power meter generates a signal that causes the stage to move the pinhole array to position another pinhole when the power meter identifies a maximum power received from one pinhole.

公开(公告)号：US10859348B1

公开(公告)日：2020-12-08

申请号：US16025417

申请日：2018-07-02

Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION

Inventor： Michael L. Dupuis ,  Joshua E. Rothenberg ,  Philip H. Maki ,  Gregory E. Foo ,  Christopher J. Lieto

IPC: F41H13/00 ,  G02B23/06 ,  G02B27/40 ,  H01S3/067 ,  H01S3/00 ,  G02B26/08

Abstract: A beam directing telescope for use in a directed energy weapons system that employs active telescope component alignment and that includes a primary mirror and a secondary mirror. The secondary mirror includes a first surface having a dichroic coating that reflects and directs a high energy laser beam to the primary mirror, reflects a portion of the reference beams and passes a portion of the reference beams that are focused by a second surface of the secondary mirror. A position sensing detector (PSD) is positioned relative to the secondary mirror such that the reference beams are focused as a spot on the PSD, where the PSD senses a position of the reference beams. An actuator changes the orientation of the secondary mirror to an alignment position if the position of the focused spots on the PSD is not the position for a desired alignment of the mirrors.

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.