公开(公告)号：US09933592B1

公开(公告)日：2018-04-03

申请号：US15411153

申请日：2017-01-20

Applicant: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.

Inventor： Kevin W. Peters

IPC: G02B13/00 ,  G02B7/02 ,  G02B27/09

CPC classification number: G02B7/028 ,  G02B1/02 ,  G02B23/00 ,  G02B27/0955

Abstract: A passive 5x athermalized afocal beam expander comprising a housing integrally formed of a single material. Using titanium for the housing as well as lens materials having a minimal change of index of refraction over changes in temperature provides for a 5x athermalized afocal beam expander constructed to operate in a wavelength range from about 1460 nm to about 1675 nm at temperatures ranging from about −40 degrees Celsius to about +75 degrees Celsius.

公开(公告)号：US20230168474A1

公开(公告)日：2023-06-01

申请号：US17538467

申请日：2021-11-30

Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

Inventor： Kevin W. Peters ,  Gerard J. Pelletier ,  David E. Thompson

IPC: G02B13/14 ,  H01L27/146 ,  G02B13/02

CPC classification number: G02B13/14 ,  H01L27/14649 ,  G02B13/02 ,  H01L27/14627

Abstract: An athermalized Short-Wave InfraRed (SWIR) telephoto lens for a tracking camera having, in order, from a remote object to an image plane an aperture stop, a first optical element having a first element first surface radius of 23.21 mm, a first element second surface radius of 46.25 mm, a second optical element having a second element first surface radius of 22.72 mm, a second element second surface radius of 45.58 mm, a third optical element having a third element first surface radius of −56.85 mm, a third element second surface radius of 16.65 mm, where the lens is corrected over a spectral waveband of 1.5 μm to 1.6 μm from −10 C to +65 C, has a length from the first element to the camera of 88 mm, has a telephoto ratio of 0.367, has an F # of 24, and has a focal length of 240 mm.

公开(公告)号：US11733497B2

公开(公告)日：2023-08-22

申请号：US17538467

申请日：2021-11-30

Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

Inventor： Kevin W. Peters ,  Gerard J. Pelletier ,  David E. Thompson

IPC: G02B13/14 ,  H01L27/146 ,  G02B13/02

CPC classification number: G02B13/14 ,  G02B13/02 ,  H01L27/14627 ,  H01L27/14649

Abstract: An athermalized Short-Wave InfraRed (SWIR) telephoto lens for a tracking camera having, in order, from a remote object to an image plane an aperture stop, a first optical element having a first element first surface radius of 23.21 mm, a first element second surface radius of 46.25 mm, a second optical element having a second element first surface radius of 22.72 mm, a second element second surface radius of 45.58 mm, a third optical element having a third element first surface radius of −56.85 mm, a third element second surface radius of 16.65 mm, where the lens is corrected over a spectral waveband of 1.5 μm to 1.6 μm from −10 C to +65 C, has a length from the first element to the camera of 88 mm, has a telephoto ratio of 0.367, has an F# of 24, and has a focal length of 240 mm.

公开(公告)号：US10886688B1

公开(公告)日：2021-01-05

申请号：US16117527

申请日：2018-08-30

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： Kevin W. Peters ,  Chapin T. Johnson ,  Frank N. Makrides ,  Kurt P. Neeb

IPC: H01S3/00 ,  H01S3/101 ,  G02B7/182 ,  G02B26/08

Abstract: A laser pointing apparatus and a method of calibration therefor utilizing a precision machined, highly reflective alignment cube to precisely calibrate the laser pointing system is provided. The calibration method can allow the calculation of the position of a transmitted beam after it leaves an azimuth mirror to high degree of accuracy over large distances.

公开(公告)号：US10697755B1

公开(公告)日：2020-06-30

申请号：US16295846

申请日：2019-03-07

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： Kevin W. Peters ,  Chapin T. Johnson

IPC: G01B11/00 ,  G01B11/26

Abstract: Methodology for calibrating a rotating mirror system includes: measuring a normal of a first fiducial of the mirror system; measuring vectors to a second fiducial of the mirror system, each vector being measured at a different angle of rotation about an azimuth axis of rotation of the mirror system; calculating the azimuth axis of rotation using the measured vectors; creating a base coordinate system from the measured first fiducial normal and the calculated azimuth axis of rotation; and for each of a first mirror and a second mirror of the mirror system, measuring normals of the mirror at multiple angles of rotation, calculating an axis of rotation of the mirror using the measured normals, creating a mirror coordinate system from the measured normals and the calculated axis of rotation of the mirror, and calculating a translation and rotation matrix from the mirror coordinate system to the base coordinate system.