Infrared imaging system and method of operating
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United States of America Patent
Stats
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May 28, 2019
Grant Date -
Jan 11, 2018
app pub date -
Sep 25, 2017
filing date -
May 2, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A lens unit (120) shows longitudinal chromatic aberration and focuses an imaged scene into a first image for the infrared range in a first focal plane and into a second image for the visible range in a second focal plane. An optical element (150) manipulates the modulation transfer function assigned to the first and second images to extend the depth of field. An image processing unit (200) may amplify a modulation transfer function contrast in the first and second images. A focal shift between the focal planes may be compensated for. While in conventional approaches for RGBIR sensors contemporaneously providing both a conventional and an infrared image of the same scene the infrared image is severely out of focus, the present approach provides extended depth of field imaging to rectify the problem of out-of-focus blur for infrared radiation. An imaging system can be realized without any apochromatic lens.
First Claim
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International Classification(s)
- 2017 Application Filing Year
- H04N Class
- 19055 Applications Filed
- 14406 Patents Issued To-Date
- 75.61 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H04N Class
- 0 % this patent is cited more than
- 6 Age
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