Dual-field-of-view optical system
First Claim
1. A dual-field-of-view optical imaging system having a narrow field-of-view and a wide field-of-view and comprising:
- a detector assembly including an imaging sensor;
narrow field-of-view objective optics configured to receive first electromagnetic radiation from a scene and to output the first electromagnetic radiation corresponding to the narrow field-of-view of the system;
wide field-of-view objective optics configured to receive second electromagnetic radiation from the scene and to output the second electromagnetic radiation corresponding to the wide field-of-view of the system;
imager optics configured to receive and focus the first electromagnetic radiation onto the imaging sensor, the imaging sensor being configured to produce narrow field-of-view image frames from the first electromagnetic radiation;
a field-of-view selection mechanism disposed between the wide field-of-view objective optics and the imager optics and configured to selectively pass the second electromagnetic radiation to the imager optics, the imager optics being further configured to focus the second electromagnetic radiation onto the imaging sensor, and the imaging sensor being further configured to produce combined image frames from the first electromagnetic radiation and the second electromagnetic radiation together, the combined image frames including imagery from both the narrow and wide fields-of-view; and
image processing circuitry coupled to the imaging sensor and configured to receive and process the narrow field-of-view image frames and the combined image frames from the imaging sensor, the image processing circuitry including an image reconstruction module configured, for each combined image frame, to;
receive the combined image frame;
receive a prior stored narrow field-of-view image frame;
compare the combined image frame with the prior stored narrow field-of-view image frame to determine a content delta between the combined image frame and the prior stored narrow field-of-view image frame; and
remove the imagery from the narrow field-of-view from the combined image frame based on the content delta to produce a wide field-of-view image frame.
1 Assignment
0 Petitions
Accused Products
Abstract
A dual-field-of-view (FOV) optical imaging system having a primary FOV and a simultaneously viewable secondary FOV. One example of the system includes an imaging sensor, primary and secondary FOV objective optics configured to receive and output electromagnetic radiation corresponding to the primary FOV and secondary FOV, respectively, imager optics, and a field-of-view selection mechanism disposed between the secondary FOV objective optics and the imager optics and configured to selectively pass the second FOV to the imager optics, the imaging sensor being configured to produce primary FOV image frames and combined image frames that include imagery from both the primary and secondary fields-of-view.
17 Citations
13 Claims
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1. A dual-field-of-view optical imaging system having a narrow field-of-view and a wide field-of-view and comprising:
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a detector assembly including an imaging sensor; narrow field-of-view objective optics configured to receive first electromagnetic radiation from a scene and to output the first electromagnetic radiation corresponding to the narrow field-of-view of the system; wide field-of-view objective optics configured to receive second electromagnetic radiation from the scene and to output the second electromagnetic radiation corresponding to the wide field-of-view of the system; imager optics configured to receive and focus the first electromagnetic radiation onto the imaging sensor, the imaging sensor being configured to produce narrow field-of-view image frames from the first electromagnetic radiation; a field-of-view selection mechanism disposed between the wide field-of-view objective optics and the imager optics and configured to selectively pass the second electromagnetic radiation to the imager optics, the imager optics being further configured to focus the second electromagnetic radiation onto the imaging sensor, and the imaging sensor being further configured to produce combined image frames from the first electromagnetic radiation and the second electromagnetic radiation together, the combined image frames including imagery from both the narrow and wide fields-of-view; and image processing circuitry coupled to the imaging sensor and configured to receive and process the narrow field-of-view image frames and the combined image frames from the imaging sensor, the image processing circuitry including an image reconstruction module configured, for each combined image frame, to; receive the combined image frame; receive a prior stored narrow field-of-view image frame; compare the combined image frame with the prior stored narrow field-of-view image frame to determine a content delta between the combined image frame and the prior stored narrow field-of-view image frame; and remove the imagery from the narrow field-of-view from the combined image frame based on the content delta to produce a wide field-of-view image frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of simultaneously viewing two fields-of-view in an optical imaging system, the method comprising:
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collecting, over a narrow field-of-view, first electromagnetic radiation energy at an imaging sensor and producing therefrom a plurality of narrow field-of-view image frames; simultaneously collecting, over a wide field-of-view, second electromagnetic radiation energy using wide objective optics; selectively directing the second electromagnetic radiation energy to the imaging sensor; at the imaging sensor, producing a plurality of combined image frames from a combination of the first electromagnetic radiation energy and the second electromagnetic radiation energy; processing the plurality of narrow field-of-view image frames and the plurality of combined image frames to produce a first display image stream corresponding to the narrow field-of-view and to produce a plurality of wide field-of-view image frames for a second display image stream corresponding to the wide field-of-view, wherein producing the plurality of wide field-of-view image frames includes; receiving the combined image frame at an image reconstruction module; receiving a prior stored narrow field-of-view image frame at the image reconstruction module; and with the image reconstruction module, comparing the combined image frame and the prior stored narrow field-of-view image frame to determine a content delta between the combined image frame and the prior stored narrow field-of-view image frame; and removing imagery in the prior stored narrow field-of-view image frame from imagery in the combined image frame to produce the wide field-of-view image frame; and displaying the first and second display image streams. - View Dependent Claims (10, 11, 12, 13)
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Specification