Todd E Rixman

US Patent:

20200116979, Apr 16, 2020

Filed:

Dec 12, 2019

Appl. No.:

16/712950

Inventors:

- Goleta CA, US
William J. Hall - Concord NC, US
Erika Goransson - Taby, SE
Todd E. Rixman - Davidson NC, US
Bengt Jervmo - Taby, SE
Bo Dahllof - Taby, SE
Stefan Gustavsson - Taby, SE
Leif Sommar - Taby, SE
Olof Holmgren - Taby, SE
Hans Ostling - Taby, SE

International Classification:

G02B 13/00
B29D 11/00
H04N 5/33
G02B 7/02

Abstract:

Systems and methods according to one or more embodiments are provided for annealing a chalcogenide lens at an elevated temperature to accelerate release of internal stress within the chalcogenide lens caused during a molding process that formed the chalcogenide lens. In particular, the annealing process includes gradually heating the chalcogenide lens to a dwell temperature, maintaining the chalcogenide lens at the dwell temperature for a predetermined period of time, and gradually cooling the chalcogenide lens from the dwell temperature. The annealing process stabilizes the shape, the effective focal length, and/or the modulation transfer function of the chalcogenide lens. Associated optical assemblies and infrared imaging devices are also described.

US Patent:

20160246027, Aug 25, 2016

Filed:

Oct 10, 2014

Appl. No.:

15/028282

Inventors:

- Wilsonville OR, US
Craig AKER - Stillwater OK, US
Todd RIXMAN - Davidson NC, US
Jeremy HUDDLESTON - Oviedo FL, US
David KELLER - Charlotte NC, US
Paul GRECO - Parkland FL, US

Assignee:

FLIR SYSTEMS, INC. - Wilsonville OR

International Classification:

G02B 7/02
H04N 5/33
G02B 13/14

Abstract:

An optical barrel assembly includes a barrel having an inner bottom surface and an inner lateral surface extending from the inner bottom surface, the inner bottom and lateral surfaces defining a cylindrical housing, and a first element surrounded by the inner lateral surface of the barrel, wherein an outer perimeter of the first element has a different shape than a perimeter defined by the cylindrical housing.