DIVIDED-APERTURE INFRA-RED SPECTRAL IMAGING SYSTEM FOR CHEMICAL DETECTION
First Claim
Patent Images
1. An infrared (IR) imaging system for determining a concentration of a target species in an object, the imaging system comprising:
- an optical system including an optical focal plane array (FPA) unit that is devoid of a cooling means, the optical system configured to receive IR radiation from the object along at least two optical channels defined by components of the optical system, said at least two optical channels being spatially and spectrally different from one another;
first and second temperature-controlled shutters removably positioned to block IR radiation incident onto the optical system from the object; and
a processor configured to acquire multispectral optical data representing said target species from the received IR radiation in a single occurrence of data acquisition.
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Abstract
A divided-aperture infrared spectral imaging (DAISI) system that is structured to provide identification of target chemical content in a single imaging shot based on spectrally-multiplexed operation. The system is devoid of spectral scanning acquisition of infrared (IR) spectral signatures of target content with an IR detector and does not require content.
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Citations
2 Claims
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1. An infrared (IR) imaging system for determining a concentration of a target species in an object, the imaging system comprising:
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an optical system including an optical focal plane array (FPA) unit that is devoid of a cooling means, the optical system configured to receive IR radiation from the object along at least two optical channels defined by components of the optical system, said at least two optical channels being spatially and spectrally different from one another; first and second temperature-controlled shutters removably positioned to block IR radiation incident onto the optical system from the object; and a processor configured to acquire multispectral optical data representing said target species from the received IR radiation in a single occurrence of data acquisition.
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2. A method for operating an infrared (IR) imaging system, comprising:
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receiving IR radiation from an object along at least two optical channels defined by components of an optical system of the IR imaging system, said at least two optical channels being spatially and spectrally different from one another; transmitting the received IR radiation towards an optical focal plane array (FPA) unit that is not being cooled in the course of normal operation; and removably positioning at least one of at least two temperature-controlled shutters in front of the optical system to block IR radiation incident onto the optical system from the object.
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Specification