WO2005088385A1 - Dual-band sensor system utilizing a wavelength-selective beamsplitter - Google Patents
Dual-band sensor system utilizing a wavelength-selective beamsplitter Download PDFInfo
- Publication number
- WO2005088385A1 WO2005088385A1 PCT/US2005/007360 US2005007360W WO2005088385A1 WO 2005088385 A1 WO2005088385 A1 WO 2005088385A1 US 2005007360 W US2005007360 W US 2005007360W WO 2005088385 A1 WO2005088385 A1 WO 2005088385A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wavelength
- sensor
- light
- imaging sensor
- sensor system
- Prior art date
Links
- 238000003384 imaging method Methods 0.000 claims abstract description 70
- 230000003595 spectral effect Effects 0.000 claims abstract description 56
- 230000003287 optical effect Effects 0.000 claims abstract description 16
- 239000002360 explosive Substances 0.000 abstract description 13
- 238000001514 detection method Methods 0.000 description 6
- 239000002689 soil Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003909 pattern recognition Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/148—Beam splitting or combining systems operating by reflection only including stacked surfaces having at least one double-pass partially reflecting surface
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
- G01J3/021—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using plane or convex mirrors, parallel phase plates, or particular reflectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/30—Measuring the intensity of spectral lines directly on the spectrum itself
- G01J3/36—Investigating two or more bands of a spectrum by separate detectors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/12—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices with means for image conversion or intensification
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
- G02B27/1013—Beam splitting or combining systems for splitting or combining different wavelengths for colour or multispectral image sensors, e.g. splitting an image into monochromatic image components on respective sensors
Definitions
- This invention relates to an imaging sensor system and, more particularly, to an imaging sensor system that images in two or more spectral bands.
- An imaging sensor system forais an image of a target on an imaging sensor.
- the imagmg sensor converts the incident light image to electrical or optical signals for further processing such as pattern recognition functions.
- the imaging sensor system is distinct from a non-imaging sensor system, which reacts to the presence of the target but does not form an image of the target.
- Imaging sensor systems One potential application of imaging sensor systems is the detection of buried anti-personnel or anti-vehicle explosive mines. Such explosive mines, if undetected, may pose a hazard long after an area is otherwise thought to be safe for use. Once detected, such explosive mines may be neutralized or avoide , in the course of preparing the mined area for subsequent use.
- the buried explosive mines may be detected based upon the spectral differences in the thermal emissivities of disturbed and undisturbed soils.
- One technique based upon this principle is to image the area being searched in. two infrared wavelengths. The images are mathematically processed msing appropriate algorithms to establish the presence of disturbed soil, which in turn suggests the possible presence of a buried explosive mine.
- One approach to performing this explosive-mine detection based l ⁇ pon thermal emissivity differences requires the optical alignment of multiple sets of optics and the calibration of the imaging sensors. Such alignment and calibration are difficult to perform initially, and it is difficult to keep the multiple sets of optics aligned and calibrated during service. Further, the available apparatus is bulky and expensive.
- the present invention provides an imaging sensor system that simultaneously images in two different spectral bands a light beam traveling on a light path from a target. Only a single common optics and a single common imaging sensor are required for imagmg the two different spectral bands.
- the use of common optics and a common imagmg sensor avoids the need to align the optics and maintain the optics in alignment, and the need to calibrate and maintain the relative calibration of two different imaging sensors.
- the imagmg sensor system is also compact and light in weight.
- the imaging sensor system may be extended to more than two different spectral bands by extensions of the present approach, the use of filters, and the like. In an application of interest, the detection of buried explosive mines, the reduced size and weight, and the reduced requirements for alignment and calibration are important advantages because the application requires that the apparatus be used in a rugged environment by relatively unskilled personnel.
- an imaging sensor system images in two different spectral bands a light beam traveling on a light path from a target.
- a “spectral band” may refer to a single discrete wavelength or to a range of wavelengths.
- the sensor system comprises an imagmg sensor operable to image light of the two different spectral bands, and a common optics having at least one reflective or refractive optical element. That is, the light beam of each of the two different spectral bands from the target reaching the imaging sensor encounters each optical element of the common optics.
- a wavelength-selective beamsplitter lies on the light path between the target and the imaging sensor.
- the wavelength-selective beamsplitter splits the light beam into two subbeams, one subbeam for each of the two different spectral bands, that are respectively incident upon two different locations of the imagmg sensor.
- the imaging sensor is preferably a single common imagmg sensor that images the light of the two different spectral bands. Two different imaging sensors may be used, but this embodiment is less desirable because it increases the difficulties in calibrating the two imaging sensors and maintaining that calibration during service.
- the wavelength-selective beamsplitter preferably comprises a dichroic reflector having a mirror and a wavelength-selective dichroic element.
- the mirror is desirably a planar mirror having a mirror plane
- the wavelength- selective dichroic element is preferably a planar wavelength-selective dichroic reflector having a dichroic plane.
- the mirror plane is not parallel to the dichroic plane.
- the wavelength-selective dichroic element reflects a first wavelength to a first location on the imagmg sensor and passes the second wavelength to the mirror.
- the mirror reflects the second wavelength to a second location on the imagmg sensor.
- the common optics and the wavelength-selective beamsplitter may be positioned in any operable relation.
- the wavelength-selective beamsplitter lies on the light path between the target and the common optics.
- a sensor window positioned such that the light path passes through the sensor window before it encounters the wavelength-selective beamsplitter, the common optics, and the imaging sensor.
- One of the problems that can occur in some imaging sensor systems is that stray light may enter the sensor system to cause ghost images.
- there may be an external light baffle positioned such that the light path encounters the light baffle before it passes through the sensor window.
- An internal baffle may be used instead of or in addition to the external baffle.
- Spectral filters that individually pass only the spectral bands of interest to the imaging sensor may also be employed.
- the spectral filters block any stray light that is not of the respective spectral bands of interest.
- a mount that supports the imaging sensor, the common optics, and the wavelength-selective beamsplitter, as well as any ofJher components such as the light baffle(s) and the spectral filters.
- the application of most current interest is the use of the imagmg sensor system to detect buried explosive mines based upon the thermal emissivity differences of disturbed and undisturbed soils.
- the mount supports the imaging sensor, the common optics, and the wavelength-selective beamsplitter, as well as any other components, in an orientation so that the target is on or in the ground.
- a method for detecting buried explosive mines comprises the steps of providing an imaging sensor system as described above, aiming the imagmg sensor system toward the ground such that the target is on or in the ground, and analyzing images produced by the two subbeams on the imaging sensor.
- the present approach provides an imaging sensor system that images the target in two different spectral bands for subsequent analysis.
- a wavelength-selective beamsplitter By using a wavelength-selective beamsplitter, common optics and a common imaging sensor may be used.
- the use of the common optics avoids the alignment problems associated with separate optics for each spectral band.
- the use of the common imaging sensor avoids the calibration problems associated with separate sensors for each spectral band.
- the present approach also allows a significant reduction in the size and weight of the two-spectral-band imaging sensor system.
- Figure 1 is a schematic depiction of an imaging sensor system
- Figure 2 is a schematic ray path drawing of the imaging sensor system for a first spectral band of the light beam
- Figure 3 is a schematic ray path drawing like that of Figure 2, but for a second spectral band of the light beam; and [0021]
- Figure 4 is a schematic ray path drawing for two different light spectral bands of a prior art sensor system that is not within the scope of the present approach.
- FIGs 1-3 schematically depict an imaging sensor system 20 that images a light beam 22 traveling in two (or more) different spectral bands 1 and 2 on a light path 24 from a target 26.
- the "spectral bands" 1 and 2 may each refer to a single discrete wavelength or to a range of wavelengths, and there may be other wavelengths present in the light beam 22 as well.
- the spectral bands 1 and 2 may be in any range, such as the ultraviolet, visible, or infrared, but are preferably in the infrared for the applications of most interest.
- the sensor system 20 includes an imaging sensor 28 operable to image respective light subbeams 22a and 22b of the respective different spectral bands 1 and 2.
- the imagmg sensor 28 preferably includes at least one focal plane array 30, and preferably exactly one focal plane array 30. If exactly one focal plane array 30 is used, that focal plane array 30 must be capable of imaging light of both spectral bands 1 and 2.
- the use of exactly one focal plane array 30 is preferred for use as a common imaging sensor, as it is not necessary to calibrate two different focal plane arrays which may have different performance characteristics.
- the respective light subbeams 22a and 22b of spectral bands 1 and 2 are imaged as respective images 29a and 29b onto respective different focal plane array parts 30a and 30b of the common imaging sensor 28, as shown schematically in Figure 1.
- the imaging sensor system 20 further includes a common optics 32 having at least one powered reflective or refractive optical element 34, indicated schematically as a single lens 36 in Figure 1 and as a practical set of four lenses 38, 40, 42, 44 in Figures 2 and 3.
- the common optics 32 may include any operable combination of reflective and/or refractive optical elements 34 that image the light beam 22 from the target 26 onto the imaging sensor 28. In the embodiments of Figures 2-3, the common optics 32 is integrated with the imagmg sensor 28 into a single unit.
- a wavelength-selective beamsplitter 46 is disposed on the light path 24 between the target 26 and the imaging sensor 28.
- the wavelength-selective beamsplitter 46 lies on the light path 24 between the target 26 and the common optics 32, but it could, for example, lie between the common optics 32 and the imaging sensor 28, or between elements of the common optics 32.
- the wavelength-selective beamsplitter 46 splits the light beam 22 into the two light subbeams 22a and 22b that are incident upon two different locations of the imaging sensor 28.
- the wavelength-selective beamsplitter 46 preferably comprises a dichroic reflector 47 having a mirror 48 and a wavelength-selective dichroic element 50, arranged so that the light path 24 from the target 26 encounters the wavelength-selective dichroic element 50 before it encounters the mirror 48.
- Dichroic elements 50 are known for other applications, and are typically fabricated by depositing a stack of thin layers on a transparent substrate.
- the dichroic element 50 reflects light of a first spectral band and passes light of a second spectral band.
- the mirror 48 is preferably a planar mirror having a mirror plane M, and the wavelength-selective dichroic element 50 is planar having a dichroic plane D.
- FIG. 1 The mirror plane M is not parallel to the dichroic plane P, as seen in Figures 1-3.
- Figures 2-3 illustrate the operation of the preferred wavelength- selective beamsplitter 46 using the dichroic reflector 47.
- the common light beam 22, including light of both spectral bands 1 and 2 encounters the dichroic reflector 47.
- the light of spectral band 1 reflects from the dichroic element 50.
- the light subbeam 22a of spectral band 1 is focused by the common optics 32 onto the imaging sensor 28 as the first image 29a.
- the light subbeam 22b of spectral band 2 passes through the dichroic element 50, is reflected from the mirror 48, and again passes through the dichroic element 50.
- the mirror plane M is not parallel to the dichroic plane P, there is a resulting spatial separation of the light subbeam 22b from the light subbeam 22a.
- the light subbeam 22b is focused by the common optics 32 onto the imaging sensor 28 as the second image 29b, which is spatially separated from the first image 29a.
- the angles of the mirror 48 and the dichroic element 50 may be altered so that the first light subbeam 22a is reflected to another area, such as the lower part of the imaging sensor 28 in the view of Figure 2, and the second light subbeam 22b is reflected to another area, such as the upper part of the imaging sensor 28 in the view of Figure 3.
- the imagmg sensor 28, the common optics 32, and the wavelength- selective beamsplitter 46 are preferably packaged in the interior of a housing 52 ( Figures 2-3).
- the housing 52 protects these components from the external environment, and also provides a convenient structure to hold the components in the proper positions and orientations.
- a sensor window 54 is positioned such that the light path 24 passes through the sensor window 54 before it encounters the wavelength-selective beamsplitter 46, the common optics 32, and the imagmg sensor 28.
- mount 56 that supports the housing 52 (where used), the imaging sensor 28, the common optics 32, and the wavelength-selective beamsplitter 46 in an orientation of interest for the particular application.
- the mount 56 is affixed to the housing 52 and may be selectively adjusted to point the imagmg sensor system 20 at any target 26 of interest.
- the mount 56 is structured to point the imaging sensor system 20 at targets 26 that are on or in the ground. That is, the target 26 in this application is typically soil, and particularly the disturbed soil that is above a buried explosive mine.
- a light baffle 58 may be positioned such that any light paths that may cause ghost images are physically blocked from reaching the imagmg sensor 28.
- the light baffle 58 may be inside or outside of the housing 52.
- Figures 2-3 illustrate light baffles 58 positioned exterior to the housing 52 so that the stray light paths encounter the light baffles 58 before they pass through the sensor window 54.
- the housing 52 and the internal structure within the housing 52 may also serve as baffles to block stray light paths.
- a spectral filter 60 including individual spectral filters 60a and 60b is preferably placed in front of the imaging sensor 28, so that the spectral filter 60 lies between the target 26 and the imaging sensor 28, and most preferably so that the spectral filter 60 lies between the dichroic reflector 47 and the imaging sensor 28.
- the spectral filter 60 intercepts the light beam 22 before it reaches the imagmg sensor 28.
- the spectral filters 60a and 60b are selected to pass only the respective spectral bands 1 and 2, and not pass other wavelengths that might be present in any stray light.
- Figure 4 illustrates a prior art approach that is not within the scope of the present invention.
- Light beams 70a and 70b from a target 72 pass through filters 74a and 74b to achieve wavelength separation, through separate optics 76a and 76b, and thence to separate imaging sensors 78a and 78b.
- Each of the light beams 70a and 70b do not encounter each optical element of the separate optics 76a and 76b.
- the approach of Figure 4 requires that the separate optics 76a and 76b be aligned and maintained in alignment with their respective imaging sensors 78a and 78b, and that the imaging sensors 78a and 78b be calibrated and maintained in calibration with each other.
- the application of the imagmg sensor system 20 of most current interest is the detection of explosive mines that are buried in the ground.
- the imaging sensor system 20 as described herein is aimed toward the ground such that the target 26 is on or in the ground, and the images 29a and 29b produced by the two subbeams 22a and 22b of respective spectral bands 1 and 2 on the imagmg sensor 28 are analyzed.
- the present approach has been reduced to practice. The prototype performs in the manner discussed herein.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05724825A EP1723464B1 (en) | 2004-03-10 | 2005-03-07 | Dual-band sensor system utilizing a wavelength-selective beamsplitter |
DE602005002630T DE602005002630T2 (en) | 2004-03-10 | 2005-03-07 | TWIN BAND SENSOR SYSTEM WITH A WAVELENGTHELECTIVE BEAM SPREADER |
IL174553A IL174553A (en) | 2004-03-10 | 2006-03-26 | Dual-band sensor system utilizing a wavelength-selective beamsplitter |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US55173704P | 2004-03-10 | 2004-03-10 | |
US60/551,737 | 2004-03-10 | ||
US11/053,298 | 2005-02-07 | ||
US11/053,298 US7298484B2 (en) | 2004-03-10 | 2005-02-07 | Dual-band sensor system utilizing a wavelength-selective beamsplitter |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005088385A1 true WO2005088385A1 (en) | 2005-09-22 |
Family
ID=34922009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/007360 WO2005088385A1 (en) | 2004-03-10 | 2005-03-07 | Dual-band sensor system utilizing a wavelength-selective beamsplitter |
Country Status (5)
Country | Link |
---|---|
US (1) | US7298484B2 (en) |
EP (1) | EP1723464B1 (en) |
DE (1) | DE602005002630T2 (en) |
IL (1) | IL174553A (en) |
WO (1) | WO2005088385A1 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7808617B2 (en) * | 2007-09-17 | 2010-10-05 | Quality Vision International, Inc. | Dual resolution, dual range sensor system and method |
US8319880B2 (en) * | 2008-02-18 | 2012-11-27 | The Board Of Regents For Oklahoma State University | Dual beam optic with dichroic filter |
EP2304930A1 (en) * | 2008-06-18 | 2011-04-06 | Carl Livesey | Tagging product information |
US8148689B1 (en) | 2008-07-24 | 2012-04-03 | Braunheim Stephen T | Detection of distant substances |
GB2474557A (en) * | 2009-10-08 | 2011-04-20 | Hoya Corp | Vehicle movement detection using visible and invisible light |
US20130223832A1 (en) * | 2012-02-24 | 2013-08-29 | Lockheed Martin Corporation | System and method for controlling scattered light in a reflective optical filter |
CN102789114B (en) * | 2011-05-18 | 2015-07-15 | 中国科学院微电子研究所 | Visible-infrared bi-pass camera |
US8507843B2 (en) * | 2011-05-20 | 2013-08-13 | Raytheon Company | Method and system for spectral calibration of a remote sensing sensor and a synthetic target having a tunable spectral composition |
US9638846B2 (en) * | 2011-07-20 | 2017-05-02 | Power Diagnostic Technologies Ltd. | Apparatus and method for multi-spectral dual balanced imaging |
US9258468B2 (en) * | 2012-02-15 | 2016-02-09 | Fluxdata, Inc. | Method and apparatus for separate spectral imaging and sensing |
US9076363B2 (en) * | 2013-01-07 | 2015-07-07 | Apple Inc. | Parallel sensing configuration covers spectrum and colorimetric quantities with spatial resolution |
DE102013212685A1 (en) * | 2013-06-28 | 2014-12-31 | Trumpf Laser- Und Systemtechnik Gmbh | Beam-influencing optics and beam-shaping system |
US10606062B2 (en) | 2018-06-20 | 2020-03-31 | Karl Storz Imaging, Inc. | Medical imaging device with split image on common image sensor |
CN110794381A (en) * | 2019-10-22 | 2020-02-14 | 中国海洋大学 | Automatic laser color single-arm association imaging system |
US11586029B2 (en) | 2020-12-09 | 2023-02-21 | Karl Storz Imaging, Inc. | Medical imaging device with split image on common image sensor |
AU2022293260A1 (en) * | 2021-06-14 | 2024-01-18 | Becton, Dickinson And Company | Clamps for applying an immobilizing force to a photodetector, and systems and methods for using the same |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0146476A2 (en) * | 1983-12-19 | 1985-06-26 | Thomson-Csf | Device for stereoscopic pictures with a base-defining system |
US4734756A (en) * | 1981-12-31 | 1988-03-29 | 3-D Video Corporation | Stereoscopic television system |
GB2235849A (en) * | 1989-07-12 | 1991-03-13 | Pilkington Perkin Elmer Ltd | Television camera having four image pick-ups viewing adjacent image areas |
WO1998035262A1 (en) * | 1997-02-06 | 1998-08-13 | Morphometrix Technologies Inc. | Infrared spectroscopy for medical imaging |
US5880771A (en) * | 1988-05-13 | 1999-03-09 | The Secretary Of State For Defence In Her Britannic Majesty's Goverment Of The United Kingdom Of Great Britain And Northern Ireland | Electro-optical detection system |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2197175A1 (en) * | 1994-08-10 | 1996-02-22 | Retinal Display Cayman Ltd. | Head mounted display optics |
US5841574A (en) * | 1996-06-28 | 1998-11-24 | Recon/Optical, Inc. | Multi-special decentered catadioptric optical system |
US5900942A (en) * | 1997-09-26 | 1999-05-04 | The United States Of America As Represented By Administrator Of National Aeronautics And Space Administration | Multi spectral imaging system |
US6249341B1 (en) * | 1999-01-25 | 2001-06-19 | Amnis Corporation | Imaging and analyzing parameters of small moving objects such as cells |
US20020176054A1 (en) * | 1999-12-30 | 2002-11-28 | Mihalakis George M. | Reflective liquid-crystal-on-silicon projection engine architecture |
EP1213569B1 (en) * | 2000-12-08 | 2006-05-17 | Gretag-Macbeth AG | Device for the measurement by pixel of a plane measurement object |
-
2005
- 2005-02-07 US US11/053,298 patent/US7298484B2/en active Active
- 2005-03-07 EP EP05724825A patent/EP1723464B1/en not_active Expired - Fee Related
- 2005-03-07 DE DE602005002630T patent/DE602005002630T2/en active Active
- 2005-03-07 WO PCT/US2005/007360 patent/WO2005088385A1/en active IP Right Grant
-
2006
- 2006-03-26 IL IL174553A patent/IL174553A/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4734756A (en) * | 1981-12-31 | 1988-03-29 | 3-D Video Corporation | Stereoscopic television system |
EP0146476A2 (en) * | 1983-12-19 | 1985-06-26 | Thomson-Csf | Device for stereoscopic pictures with a base-defining system |
US5880771A (en) * | 1988-05-13 | 1999-03-09 | The Secretary Of State For Defence In Her Britannic Majesty's Goverment Of The United Kingdom Of Great Britain And Northern Ireland | Electro-optical detection system |
GB2235849A (en) * | 1989-07-12 | 1991-03-13 | Pilkington Perkin Elmer Ltd | Television camera having four image pick-ups viewing adjacent image areas |
WO1998035262A1 (en) * | 1997-02-06 | 1998-08-13 | Morphometrix Technologies Inc. | Infrared spectroscopy for medical imaging |
Non-Patent Citations (1)
Title |
---|
SMITH P H: "IMAGER FOR MARS PATHFINDER EXPERIMENT (IMP): A MULTISPECTRAL STEREO IMAGING SYSTEM", PROCEEDINGS OF THE SPIE, SPIE, BELLINGHAM, VA, US, vol. 3295, 26 January 1998 (1998-01-26), pages 4 - 9, XP008022131, ISSN: 0277-786X * |
Also Published As
Publication number | Publication date |
---|---|
US20050200847A1 (en) | 2005-09-15 |
EP1723464A1 (en) | 2006-11-22 |
DE602005002630D1 (en) | 2007-11-08 |
DE602005002630T2 (en) | 2008-06-05 |
IL174553A0 (en) | 2006-08-20 |
EP1723464B1 (en) | 2007-09-26 |
IL174553A (en) | 2010-12-30 |
US7298484B2 (en) | 2007-11-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1723464B1 (en) | Dual-band sensor system utilizing a wavelength-selective beamsplitter | |
US8351045B1 (en) | Compact snapshot multispectral imaging system | |
TW202011045A (en) | Multispectral ranging/imaging sensor arrays and systems | |
EP2992379B1 (en) | Time-multiplexed broadband and multi-filtered electro-optic sensor | |
KR100914094B1 (en) | Lightweight laser designator ranger flir optics | |
US6946647B1 (en) | Multicolor staring missile sensor system | |
US20070201027A1 (en) | Innovative Raster-Mirror Optical Detection System For Bistatic Lidar | |
US20030102435A1 (en) | Multiband, single element wide field of view infrared imaging system | |
US9448107B2 (en) | Panoramic laser warning receiver for determining angle of arrival of laser light based on intensity | |
EP2856093B1 (en) | Imaging system with multiple focal plane array sensors | |
US20040104334A1 (en) | Omni-directional radiation source and object locator | |
US8502128B1 (en) | Dual-mode electro-optic sensor and method of using target designation as a guide star for wavefront error estimation | |
EP2549301B1 (en) | Optical detection of radiometric events | |
EP3956602A1 (en) | Active illumination systems for changing illumination wavelength with field angle | |
US11125623B2 (en) | Satellite onboard imaging systems and methods for space applications | |
US11609338B2 (en) | Method and device for detecting incident laser radiation on a spacecraft | |
US9696117B2 (en) | Missile seekers | |
US7119969B1 (en) | Pixel matched camera optics | |
US6411445B1 (en) | Optical system with center-bored catadioptric imaging lens | |
EP3673284A1 (en) | Low cost, high accuracy laser warning receiver | |
EP1369734B1 (en) | Optical system with center-bored catadioptric imaging lens | |
US10890417B2 (en) | Compound eye laser tracking device | |
US10904460B2 (en) | Imaging instrument for checking a target designation |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 174553 Country of ref document: IL |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005724825 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 2005724825 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 2005724825 Country of ref document: EP |