MWIR lens for remote sensing

US11855111B2 · kind B2 · utility

Assignee

• BAE Systems Information and Electronic Systems Integration Inc. · US

Inventors

• Mark Oskotsky · Mamaroneck, US
• Thomas Altamura · Hicksville, US
• Daniel Engheben · Commack, US
• Morgan Jolley · Commack, US
• Christopher V. Lipari · Saddle Rock, US
• Vincent Lipari · Great Neck, US
• Jerry Ma · Great Neck, US
• Michael J. Russo · San Francisco, US
• Yueli Zhang · Saint James, US

Key dates

• Filing date: Apr 23, 2021
• Grant date: Dec 26, 2023
• Expiry date: Mar 7, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B26/101
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A Mid-Wave Infrared (MWIR) objective lens having an F # of 2.64 and a 33.6° angular field of view. It is deployed, with a focal plane and scanning system, on an airborne platform for remote sensing applications. Focal length is 9 inches, and the image is formed on a focal plane constituting CCD or CMOS with micro lenses. The lens has, from object to image, three optical element groups with a cold shield/aperture stop. Group 1 has a positive optical power and three optical elements; Group 2 has a positive optical power and four optical elements; Group 3 has a positive optical power and three optical elements. The objective lens is made of two Germanium and Silicon. The lens is both apochromatic and orthoscopic, and corrected for monochromatic and chromatic aberrations over 3.3 to 5.1 micrometers.