LWIR imaging lens, image capturing system having the same, and associated method

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United States of America Patent

PATENT NO 9348120
SERIAL NO

13356211

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Abstract

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An imaging lens for use with an operational waveband over any subset of 7.5-13.5 μm may include a first optical element of a first high-index material and a second optical element of a second high-index material. At least two surfaces of the first and second optical elements may be optically powered surfaces. A largest clear aperture of all optically powered surfaces may not exceed a diameter of an image circle of the imaging lens corresponding to a field of view of 55 degrees or greater by more than 30%. The first and second high-index materials may have a refractive index greater than 2.2 in the operational waveband, an absorption per mm of less than 75% in the operational waveband, and an absorption per mm of greater than 75% in a visible waveband of 400-650 nm.

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Patent Owner(s)

  • FLIR SYSTEMS TRADING BELGIUM BVBA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Huddleston, Jeremy Concord, US 18 90

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