WO2002019030B1 - Dual band framing reconnaissance camera - Google Patents

Dual band framing reconnaissance camera

Info

Publication number
WO2002019030B1
WO2002019030B1 PCT/US2001/023680 US0123680W WO0219030B1 WO 2002019030 B1 WO2002019030 B1 WO 2002019030B1 US 0123680 W US0123680 W US 0123680W WO 0219030 B1 WO0219030 B1 WO 0219030B1
Authority
WO
WIPO (PCT)
Prior art keywords
optical
radiation
camera
image recording
electromagnetic spectrum
Prior art date
Application number
PCT/US2001/023680
Other languages
French (fr)
Other versions
WO2002019030A1 (en
WO2002019030A9 (en
Inventor
Andrew J Partynski
Stephen R Beran
Allie M Baker
John Jones
Stephan Wyatt
Original Assignee
Recon Optical Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/652,529 external-priority patent/US6374047B1/en
Priority claimed from US09/652,524 external-priority patent/US6477326B1/en
Priority claimed from US09/654,031 external-priority patent/US6658207B1/en
Priority claimed from US09/652,965 external-priority patent/US6366734B1/en
Application filed by Recon Optical Inc filed Critical Recon Optical Inc
Priority to EP01984574A priority Critical patent/EP1323001A4/en
Priority to CA002418917A priority patent/CA2418917C/en
Priority to AU2002216609A priority patent/AU2002216609A1/en
Publication of WO2002019030A1 publication Critical patent/WO2002019030A1/en
Publication of WO2002019030B1 publication Critical patent/WO2002019030B1/en
Publication of WO2002019030A9 publication Critical patent/WO2002019030A9/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
    • G01C11/02—Picture taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures
    • G01C11/025—Picture taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures by scanning the object
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0804—Catadioptric systems using two curved mirrors
    • G02B17/0808—Catadioptric systems using two curved mirrors on-axis systems with at least one of the mirrors having a central aperture
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0852—Catadioptric systems having a field corrector only
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0896—Catadioptric systems with variable magnification or multiple imaging planes, including multispectral systems
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe
    • G03B37/02—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe with scanning movement of lens or cameras
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/681—Motion detection
    • H04N23/6812—Motion detection based on additional sensors, e.g. acceleration sensors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/682—Vibration or motion blur correction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/682—Vibration or motion blur correction
    • H04N23/685—Vibration or motion blur correction performed by mechanical compensation
    • H04N23/687—Vibration or motion blur correction performed by mechanical compensation by shifting the lens or sensor position
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/695—Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
    • H04N7/185—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source from a mobile camera, e.g. for remote control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Cameras In General (AREA)
  • Studio Devices (AREA)

Abstract

An electro-optical roll-framing camera (36) is described in which successive overlapping frames of scene imagery (1-5) are generated by an electro-optical imaging array (300). Image motion compensation is performed electronically to stop or freeze image motion caused by the roll motion. The image motion compensation is performed by the array (64) during the generation of the frames of imagery (1-5). The successive frames of imagery (1-5) are made during a continuous roll motion of the entire camera. The image motion due to roll is stopped or frozen without mechanically stopping the roll motion. The roll framing cycles (1-5) of the camera generate sweeping coverage of the terrain of interest (42). The roll rate for a given electro-optical array (300) is a function of the frame size and the framing rate, and is controllable by a master control computer (34). A novel catoptric Cassegrain optical system (50) which performs forward motion compensation is also described.

Claims

AMENDED CLAIMS
[received by the International Bureau on 11 April 2002 (11.04.02); new claims 119-134 added; remaining claims unchanged (4 pages)]
includes a first two-dimensional image recording medium and wherein said second optical path includes a second two-dimensional image recording medium.
116. The optical system of claim 1 14, wherein said camera housing is coupled to said aerial reconnaissance vehicle by at least one roll motor which rotates said housing about the roll axis of said vehicle.
117. The optical system of claim 114, wherein said cassegrain optical system has a prescription substantially as set forth herein.
118. The optical system of claim 1 14, further comprising relay optics in said first and second optical paths having a prescription substantially as set forth in Tables 1 and 2.
119. A dual band framing aerial reconnaissance camera for installation in an airborne vehicle, comprising;
(a) a camera housing;
(b) an optical system incorporated into said camera housing, comprising:
(1) an objective optical subassembly for receiving incident radiation from a scene external of said vehicle; (2) a spectrum dividing element receiving radiation from said objective optical subassembly, said element directing radiation in a first band of the electromagnetic spectrum into a first optical path and directing radiation in a second band of the electromagnetic spectrum into a second optical path different from said first optical path; (3) a first two-dimensional image recording medium in said first optical path for generating frames of imagery in said first band of the electromagnetic spectrum; and
(4) a second two-dimensional image recording medium in said second optical path for generating frames of imagery in said second band of the electromagnetic spectrum;
(c) a first motor system coupled to said camera housing capable of rotating said camera about a first axis,
71 wherein said first and second image recording media are exposed to said scene to generate frames of imagery in said first and second bands of said electromagnetic spectrum as said first motor system steps said camera in a series of steps about said first axis.
120. The camera of claim 119, further comprising a second motor system coupled to said objective optical subassembly, said second motor system rotating said objective optical subassembly about a second axis in the direction of forward motion of said vehicle to compensate for forward motion of said aerial reconnaissance vehicle.
121. The camera of claim 119, wherein said first image recording medium comprises an electro-optical detector sensitive to radiation in the infrared portion of the electromagnetic spectrum.
122. The camera of claim 121, wherein said detector sensitive to radiation in the infrared portion of the electromagnetic spectrum is sensitive to radiation having a wavelength of between 1.0 and 2.5 microns.
123. The camera of claim 121, wherein the detector sensitive to radiation in the infrared portion of the electromagnetic spectrum is sensitive to radiation having a wavelength of between 3.0 and 5.0 microns.
124. The camera of claim 121, wherein the detector sensitive to radiation in the infrared portion of the electromagnetic spectrum is sensitive to radiation having a wavelength of between 8.0 and 14.0 microns.
125. The camera of claim 119, wherein one of said image recording media comprises an electro-optical detector sensitive to radiation in the visible portion of the electromagnetic spectrum and wherein the other of said image recording media comprises an electro-optical detector sensitive to radiation in the infrared portion of the electromagnetic spectrum.
126. The camera of claim 119, wherein one of said image recording media comprises an electro-optical detector sensitive to radiation in the visible portion of the electromagnetic spectrum and wherein the other of said image recording media comprises
72 an electro-optical detector sensitive to radiation in the ultraviolet portion of the electromagnetic spectrum.
127. The camera of claim 1 19, wherein one of said image recording media comprises an electro-optical detector sensitive to radiation in the ultraviolet portion of the electromagnetic spectrum and wherein the other of said image recording media comprises an electro-optical detector sensitive to radiation in the infrared portion of the electromagnetic spectrum.
128. The camera of claim 119, wherein said objective optical assembly further comprises: a Cassegrain optical system having a primary mirror, a secondary mirror and an azimuth mirror, a motor having a first portion fixed with respect to said camera housing and a movable portion coupled to said primary mirror, wherein said motor rotates said primary mirror and said secondary mirror about an axis in the direction of flight at a rate substantially equal to V/R, wherein V comprises the forward velocity of the vehicle and R comprises the range to the scene of interest or an approximation of said range; and wherein said azimuth mirror is rotated about an axis in the direction of flight at a rate substantially equal to A V R.
129. The method of claim 119, wherein said first and second image recording media comprise electro-optical imaging detectors and wherein forward motion compensation for said electro-optical imaging detectors is performed electronically in said imaging detectors is performed on chip.
130. The method of claim 119, wherein said objective optical subassembly comprises a Cassegrain optical system having a primary mirror, a secondary mirror and an azimuth mirror.
73
131 . The method of claim 130. wherein said Cassegrain optical system farther comprises a motor rotating said primary and secondary mirrors for pointing said camera.
132. The method of claim 119, wherein both said first and second image recording media comprise electro-optical detectors sensitive to radiation in the infrared portion of the electromagnetic spectrum.
133. The method of claim 119, wherein said first image recording media comprises a hyperspectral imaging system.
134. The method of claim 133, wherein said second image recording media comprises an electro-optical detector sensitive to radiation in the visible portion of the spectrum.
74
PCT/US2001/023680 2000-08-31 2001-07-26 Dual band framing reconnaissance camera WO2002019030A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01984574A EP1323001A4 (en) 2000-08-31 2001-07-26 Dual band framing reconnaissance camera with roll motion compensation
CA002418917A CA2418917C (en) 2000-08-31 2001-07-26 Dual band framing reconnaissance camera
AU2002216609A AU2002216609A1 (en) 2000-08-31 2001-07-26 Dual band framing reconnaissance camera

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US09/652,529 US6374047B1 (en) 2000-08-31 2000-08-31 Cassegrain optical system for framing aerial reconnaissance camera
US09/652,524 2000-08-31
US09/654,031 2000-08-31
US09/652,529 2000-08-31
US09/652,965 2000-08-31
US09/652,524 US6477326B1 (en) 2000-08-31 2000-08-31 Dual band framing reconnaissance camera
US09/654,031 US6658207B1 (en) 2000-08-31 2000-08-31 Method of framing reconnaissance with motion roll compensation
US09/652,965 US6366734B1 (en) 2000-08-31 2000-08-31 Method of forward motion compensation in an aerial reconnaissance camera

Publications (3)

Publication Number Publication Date
WO2002019030A1 WO2002019030A1 (en) 2002-03-07
WO2002019030B1 true WO2002019030B1 (en) 2002-06-27
WO2002019030A9 WO2002019030A9 (en) 2002-08-29

Family

ID=27505276

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/023680 WO2002019030A1 (en) 2000-08-31 2001-07-26 Dual band framing reconnaissance camera

Country Status (4)

Country Link
EP (1) EP1323001A4 (en)
AU (1) AU2002216609A1 (en)
CA (1) CA2418917C (en)
WO (1) WO2002019030A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2448653B (en) * 2006-03-03 2011-03-23 Honeywell Int Inc Single lens splitter camera
US7830565B2 (en) * 2006-06-27 2010-11-09 Motorola, Inc. Image capture device with rolling band shutter
US10337862B2 (en) 2006-11-30 2019-07-02 Rafael Advanced Defense Systems Ltd. Digital mapping system based on continuous scanning line of sight
US8223235B2 (en) 2007-12-13 2012-07-17 Motorola Mobility, Inc. Digital imager with dual rolling shutters
EP3204786B1 (en) * 2014-10-08 2020-01-08 Spookfish Innovations Pty Ltd. An aerial camera system
CN104486535B (en) * 2014-12-29 2017-07-14 中国科学院长春光学精密机械与物理研究所 Frame transfer type CCD aerial cameras scan IMC method
US20200210676A1 (en) * 2018-12-27 2020-07-02 Simplex Mapping Solutions Sb Ltd. Compact interval sweeping imaging system and method
WO2021030277A1 (en) 2019-08-11 2021-02-18 Youngwan Choi Small form factor 4-mirror based imaging systems
US11579430B2 (en) 2019-08-11 2023-02-14 Youngwan Choi Small form factor, multispectral 4-mirror based imaging systems
US11668915B2 (en) 2019-08-11 2023-06-06 Youngwan Choi Dioptric telescope for high resolution imaging in visible and infrared bands

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Publication number Priority date Publication date Assignee Title
US5155597A (en) * 1990-11-28 1992-10-13 Recon/Optical, Inc. Electro-optical imaging array with motion compensation
US5692062A (en) 1994-10-03 1997-11-25 Recon/Optical, Inc. Electro-optical imaging array with profiled foward motion compensation
US5668593A (en) 1995-06-07 1997-09-16 Recon/Optical, Inc. Method and camera system for step frame reconnaissance with motion compensation
US5806789A (en) * 1995-08-22 1998-09-15 Lockheed Corporation Optical apparatus for an aircraft
US5798786A (en) 1996-05-07 1998-08-25 Recon/Optical, Inc. Electro-optical imaging detector array for a moving vehicle which includes two axis image motion compensation and transfers pixels in row directions and column directions
US5841574A (en) * 1996-06-28 1998-11-24 Recon/Optical, Inc. Multi-special decentered catadioptric optical system
FR2752619B1 (en) * 1996-08-23 1998-11-13 Thomson Csf AIR-TO-GROUND RECOGNITION METHOD AND DEVICE FOR OPTRONIC EQUIPMENT
DE69739272D1 (en) * 1996-11-05 2009-04-02 Bae Systems Information Device for electro-optical remote sensing with motion compensation
US5925883A (en) 1997-07-25 1999-07-20 Raytheon Company Staring IR-FPA with CCD-based image motion compensation
US6130705A (en) * 1998-07-10 2000-10-10 Recon/Optical, Inc. Autonomous electro-optical framing camera system with constant ground resolution, unmanned airborne vehicle therefor, and methods of use
DE19902081A1 (en) * 1999-01-20 2000-07-27 Zeiss Carl Fa Stabilized camera

Also Published As

Publication number Publication date
WO2002019030A1 (en) 2002-03-07
AU2002216609A1 (en) 2002-03-13
EP1323001A1 (en) 2003-07-02
CA2418917C (en) 2007-03-06
CA2418917A1 (en) 2002-03-07
EP1323001A4 (en) 2007-01-31
WO2002019030A9 (en) 2002-08-29

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