CA2108718A1 - Ir remote thermometer - Google Patents
Ir remote thermometerInfo
- Publication number
- CA2108718A1 CA2108718A1 CA002108718A CA2108718A CA2108718A1 CA 2108718 A1 CA2108718 A1 CA 2108718A1 CA 002108718 A CA002108718 A CA 002108718A CA 2108718 A CA2108718 A CA 2108718A CA 2108718 A1 CA2108718 A1 CA 2108718A1
- Authority
- CA
- Canada
- Prior art keywords
- image
- temperature
- thermometer
- remote
- blackbody radiator
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
- 230000005855 radiation Effects 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 238000013016 damping Methods 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
Classifications
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0814—Particular reflectors, e.g. faceted or dichroic mirrors
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/0255—Sample holders for pyrometry; Cleaning of sample
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/04—Casings
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/04—Casings
- G01J5/047—Mobile mounting; Scanning arrangements
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0808—Convex mirrors
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/48—Thermography; Techniques using wholly visual means
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/52—Radiation pyrometry, e.g. infrared or optical thermometry using comparison with reference sources, e.g. disappearing-filament pyrometer
- G01J5/53—Reference sources, e.g. standard lamps; Black bodies
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/80—Calibration
- G01J5/804—Calibration using atmospheric correction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
- H04N3/08—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving reflector
- H04N3/09—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving reflector for electromagnetic radiation in the invisible region, e.g. infrared
Abstract
ABSTRACT OF THE DISCLOSURE
A remote-reading IR thermometer is provided by means of which the temperature of an object can be measured in a non-contacting manner from a given distance, using a line detector on a screen scanning at a rate of approximately 25 Hz. The thermometer includes an image-processing electronic system for providing an IR image, such image being homogenized by detector elements which change from image to image to build up each line on the screen. The thermometer also includes a blackbody radiator of known and regulated temperature. Means are provided for the input of atmospheric correction factors into the image-processing electronic system. The temperature of the object is determined by comparing the radiation output of the object with the output of the blackbody radiator. A
temperature-regulated reference surface is preferably used as the blackbody radiator in the thermometer and all the signals emanating from the object are related to the signal from this surface. Since atmospheric correction factors are input into the image-processing electronics, the atmospheric damping of the radiation output of the object is directly allowed for.
A remote-reading IR thermometer is provided by means of which the temperature of an object can be measured in a non-contacting manner from a given distance, using a line detector on a screen scanning at a rate of approximately 25 Hz. The thermometer includes an image-processing electronic system for providing an IR image, such image being homogenized by detector elements which change from image to image to build up each line on the screen. The thermometer also includes a blackbody radiator of known and regulated temperature. Means are provided for the input of atmospheric correction factors into the image-processing electronic system. The temperature of the object is determined by comparing the radiation output of the object with the output of the blackbody radiator. A
temperature-regulated reference surface is preferably used as the blackbody radiator in the thermometer and all the signals emanating from the object are related to the signal from this surface. Since atmospheric correction factors are input into the image-processing electronics, the atmospheric damping of the radiation output of the object is directly allowed for.
Description
2 l ~ 8 7 1 ~
The invention relates to a remote-r~ading thermometer which permits temperatures to be measured without risk from a given safe distance.
It is already known that temperatures can be remotely msasur2d by comparing the radiation to be measured, which is emitted from the object, with th~ radiation emitted by a calibrated radiator (a blackbody). In this measurement technique, the reference radiation and the radiation from the environment of the object are alternatingly fed into the input optics of the remote-reading thermometer. As a rule, this is accomplished by means of a mechanical modulator, which may for example, take the form of a bladed wheel whose surface has a mirror finish.
However, such an arrangement has the disadvantage that, because of the use of the bladed wheel, which is a relatively heavy, mechanically-rotated part, the time required for a temperature measurement takes at least 1 sec. As a result, the infrared image of the object which is picked up by the remote-reading thermometer is not continuously available.
An object of one aspect of the present invention is to mitigate this disadvantage and to provide a remote-reading thermometer in which the temperature can be measured in millisecond intervals.
By one broad aspect of this invention, an IR remote-reading thermometer is provided for contactless measurement of the temperature of an object at a given distance via the IR
.
21~71,3 radiatlon, using a line detector on a screen scanning at a rate of approximately 25 Hz, comprising the combination of; an image-processing el~c~ronic system for providing an IR image, such image being homogenized by detector elements which change from image to image to build up each line on the screen; a blackbody radiator of known and regulated temperature; and means for the input of atmospheric correction factors into the image-processing electronic system; whereby the temperature of the object is determined by comparing the measured radiation lo output of the object with the output of the blackbody radiator.
By one variant thereof, the blackbody radiator comprises a temperature-regulated reference surface; and means are included for programming the correction factors into the image-processing electronics as fixed data; whereby all the signals emanating from the object are related to the signal from the temperature-regulated reference surface.
By yet another variant thereof, the correction factors include at least one of the emissivity of the object and meteorolgical data, from which atmospheric damping of the IR
signal between input optics of the thermometer from the object may be calculated.
In more general terms, in accordance with broad aspects of the present invention, a given image field is scanned using a line detector, at a rate of approximately 25 Hz using a conventional image-processing electronic system for providing 21'3~71 ~
an IR image. In order to homogenize the gener~ted image, detector elements which change from image to image are used to produce each line on the screen. At the beginning and end of each line scan, the radiation from a reference surface which is suitably mounted inside the housing, is directed onto the detector. All the emitted signals are related to a base signal generated by this radiation.
In a further embodiment of the invention, the reference surface may preferably take the form of a t~mperature-controlled blackbody radiator. In this way, an infraredremote-reading thermometer is obtained which can be appropriately laid out for all common TV standards.
Correspondingly, the time resolution of the measurement is in the millisecond range and the infrared image is continuously available.
If, in addition, the IR remote-reading thermometer is equipped with a suitable processor for inputting correction factors, e.g., the emissivity of the object and meteorological data, from which the atmospheric damping of the infrared signal between the object and the input optics of the thermomQter can be calculated, then the measured temperature of the object can be made simultaneously available with the infrared image of the scene.
In the accompanying drawing, the single Figure shows, in diagrammatic form, a view of a remote-reading thermometer according to one aspect of the present invention.
2 ~ ~ 8 7 1 ~
As seen in the drawing, the image field 11 is shown on one eide of the drawing, and the housing 12 is shown on the other side. It wlll be seen that the rays 13 emanating from the image field 12 are reflected by a vertical scanner 14 and by a line scanner 15 to a detector 16 made up of a linear array of individual elements (not shown). The image field 11 contains the scene 17 whose temperature is to be determined.
As shown in the drawing, a reference sur~ace 18 is arranged inside the housing 12. In the device according to one embodiment of the present invention, this reference surface takes the form of a temperature-requlated blackbody radiator having a de~ined temperature To~ The radiation from this surface is fed to the detector 16 once per line scan via the vertical scanner 14 and the line scanner 15.
The shaded portion 19 of the image field 11 in the drawing depicts the projection of the reference surface 18 into the image field. However, this depiction is shown only for explanatory purposes. The rays 13 reaching the detector from the appropriate direction are always emitted by the reference surface shown here.
The embodiment illustrated shows only the simplest possible arrangement of the line scanner and vertical scanner.
As a rule, a suitable device containing additional optical elements or assemblies is constructed, for example, in the manner of a telescopic ancillary lens. If such optical alements create intermediate image planes containing the , 2~71~
sequence of one or more line scans, then the reference surface is preferably arranged in the intermediate image plane, because it is in this position that the shortest time is taken for the bundle of IR light rays to overrun the edge of the reference surface.
Thus, the present invention provides a remote-reading IR
thermometer which may be used for carrying out contactless measurement of the temperature of objects. The measurement is accomplished by recording all the infrared radiation emitted by an object within a certain spectral bandwidth. In the case of hot objects or in a contaminated or inaccessible environment, the remote-reading thermometer of aspects of this invention permits temperatures to be measured without risk and from a safe distance.
;:
.. ~...... . .
-.
The invention relates to a remote-r~ading thermometer which permits temperatures to be measured without risk from a given safe distance.
It is already known that temperatures can be remotely msasur2d by comparing the radiation to be measured, which is emitted from the object, with th~ radiation emitted by a calibrated radiator (a blackbody). In this measurement technique, the reference radiation and the radiation from the environment of the object are alternatingly fed into the input optics of the remote-reading thermometer. As a rule, this is accomplished by means of a mechanical modulator, which may for example, take the form of a bladed wheel whose surface has a mirror finish.
However, such an arrangement has the disadvantage that, because of the use of the bladed wheel, which is a relatively heavy, mechanically-rotated part, the time required for a temperature measurement takes at least 1 sec. As a result, the infrared image of the object which is picked up by the remote-reading thermometer is not continuously available.
An object of one aspect of the present invention is to mitigate this disadvantage and to provide a remote-reading thermometer in which the temperature can be measured in millisecond intervals.
By one broad aspect of this invention, an IR remote-reading thermometer is provided for contactless measurement of the temperature of an object at a given distance via the IR
.
21~71,3 radiatlon, using a line detector on a screen scanning at a rate of approximately 25 Hz, comprising the combination of; an image-processing el~c~ronic system for providing an IR image, such image being homogenized by detector elements which change from image to image to build up each line on the screen; a blackbody radiator of known and regulated temperature; and means for the input of atmospheric correction factors into the image-processing electronic system; whereby the temperature of the object is determined by comparing the measured radiation lo output of the object with the output of the blackbody radiator.
By one variant thereof, the blackbody radiator comprises a temperature-regulated reference surface; and means are included for programming the correction factors into the image-processing electronics as fixed data; whereby all the signals emanating from the object are related to the signal from the temperature-regulated reference surface.
By yet another variant thereof, the correction factors include at least one of the emissivity of the object and meteorolgical data, from which atmospheric damping of the IR
signal between input optics of the thermometer from the object may be calculated.
In more general terms, in accordance with broad aspects of the present invention, a given image field is scanned using a line detector, at a rate of approximately 25 Hz using a conventional image-processing electronic system for providing 21'3~71 ~
an IR image. In order to homogenize the gener~ted image, detector elements which change from image to image are used to produce each line on the screen. At the beginning and end of each line scan, the radiation from a reference surface which is suitably mounted inside the housing, is directed onto the detector. All the emitted signals are related to a base signal generated by this radiation.
In a further embodiment of the invention, the reference surface may preferably take the form of a t~mperature-controlled blackbody radiator. In this way, an infraredremote-reading thermometer is obtained which can be appropriately laid out for all common TV standards.
Correspondingly, the time resolution of the measurement is in the millisecond range and the infrared image is continuously available.
If, in addition, the IR remote-reading thermometer is equipped with a suitable processor for inputting correction factors, e.g., the emissivity of the object and meteorological data, from which the atmospheric damping of the infrared signal between the object and the input optics of the thermomQter can be calculated, then the measured temperature of the object can be made simultaneously available with the infrared image of the scene.
In the accompanying drawing, the single Figure shows, in diagrammatic form, a view of a remote-reading thermometer according to one aspect of the present invention.
2 ~ ~ 8 7 1 ~
As seen in the drawing, the image field 11 is shown on one eide of the drawing, and the housing 12 is shown on the other side. It wlll be seen that the rays 13 emanating from the image field 12 are reflected by a vertical scanner 14 and by a line scanner 15 to a detector 16 made up of a linear array of individual elements (not shown). The image field 11 contains the scene 17 whose temperature is to be determined.
As shown in the drawing, a reference sur~ace 18 is arranged inside the housing 12. In the device according to one embodiment of the present invention, this reference surface takes the form of a temperature-requlated blackbody radiator having a de~ined temperature To~ The radiation from this surface is fed to the detector 16 once per line scan via the vertical scanner 14 and the line scanner 15.
The shaded portion 19 of the image field 11 in the drawing depicts the projection of the reference surface 18 into the image field. However, this depiction is shown only for explanatory purposes. The rays 13 reaching the detector from the appropriate direction are always emitted by the reference surface shown here.
The embodiment illustrated shows only the simplest possible arrangement of the line scanner and vertical scanner.
As a rule, a suitable device containing additional optical elements or assemblies is constructed, for example, in the manner of a telescopic ancillary lens. If such optical alements create intermediate image planes containing the , 2~71~
sequence of one or more line scans, then the reference surface is preferably arranged in the intermediate image plane, because it is in this position that the shortest time is taken for the bundle of IR light rays to overrun the edge of the reference surface.
Thus, the present invention provides a remote-reading IR
thermometer which may be used for carrying out contactless measurement of the temperature of objects. The measurement is accomplished by recording all the infrared radiation emitted by an object within a certain spectral bandwidth. In the case of hot objects or in a contaminated or inaccessible environment, the remote-reading thermometer of aspects of this invention permits temperatures to be measured without risk and from a safe distance.
;:
.. ~...... . .
-.
Claims (3)
1. An IR remote-reading thermometer for contactless measurement of the temperature of an object at a given distance via IR radiation, using a line detector on a screen scanning at a rate of approximately 25 Hz, comprising the combination of:
(a) an image-processing electronic system for providing an IR image, said IR image being homogenized by detector elements which change from image to image to build up each line on said screen;
(b) a blackbody radiator of known and regulated temperature;
and (c) means for the input of atmospheric correction factors into said image-processing electronic system;
whereby the temperature of said object is determined by comparing the measured radiation output of said object with the output of said blackbody radiator.
(a) an image-processing electronic system for providing an IR image, said IR image being homogenized by detector elements which change from image to image to build up each line on said screen;
(b) a blackbody radiator of known and regulated temperature;
and (c) means for the input of atmospheric correction factors into said image-processing electronic system;
whereby the temperature of said object is determined by comparing the measured radiation output of said object with the output of said blackbody radiator.
2. The IR remote-reading thermometer according to claim 1, wherein said blackbody radiator comprises a temperature-regulated reference surface; and including means for programming said correction factors into said image-processing electronics as fixed data; whereby all the signals emanating from said object are related to the signal from said temperature-regulated reference surface.
3. The IR remote-reading thermometer of claim 2 wherein said correction factors include at least one of the emissivity of said object and meteorolgical data, from which atmospheric damping of the IR signal between input optics of the thermometer from said object may be calculated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4235772.1 | 1992-10-23 | ||
| DE4235772A DE4235772A1 (en) | 1992-10-23 | 1992-10-23 | IR remote thermometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2108718A1 true CA2108718A1 (en) | 1994-04-24 |
Family
ID=6471155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002108718A Abandoned CA2108718A1 (en) | 1992-10-23 | 1993-10-19 | Ir remote thermometer |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0594102A1 (en) |
| CA (1) | CA2108718A1 (en) |
| DE (1) | DE4235772A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5668539A (en) * | 1995-08-30 | 1997-09-16 | 1138037 Ontario Ltd. | Thermal emitted radiation detecting device |
| US6753766B2 (en) | 2001-01-15 | 2004-06-22 | 1138037 Ontario Ltd. (“Alirt”) | Detecting device and method of using same |
| US7634341B2 (en) | 2001-03-07 | 2009-12-15 | 1138037 Ontario Ltd. (“Alirt”) | Detecting device and method of using same |
| US7661876B2 (en) | 2007-11-14 | 2010-02-16 | Fluke Corporation | Infrared target temperature correction system and method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9324737D0 (en) * | 1993-12-02 | 1994-05-11 | Vinten Ltd | Image scanning device |
| FR2870708B1 (en) * | 2004-05-25 | 2007-02-23 | Realtrace Sarl | DEVICE FOR REMOTELY MEASURING THE TEMPERATURE OF AN OBJECT OR LIVING BODY |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3631248A (en) * | 1969-12-30 | 1971-12-28 | Texas Instruments Inc | Target-scanning camera comprising a constant temperature source for providing a calibration signal |
| US4419692A (en) * | 1981-12-31 | 1983-12-06 | Texas Medical Instruments, Inc. | High speed infrared imaging system |
| US4695722A (en) * | 1986-04-25 | 1987-09-22 | Ford Aerospace & Communications Corporation | Optical scanner error compensator |
| US4983837A (en) * | 1988-10-31 | 1991-01-08 | Texas Instruments Incorporated | Forward looking infrared imaging system |
| US5094544A (en) * | 1990-10-19 | 1992-03-10 | Square D Company | Scanning infrared thermometer with DC offset and emissivity correction |
-
1992
- 1992-10-23 DE DE4235772A patent/DE4235772A1/en not_active Withdrawn
-
1993
- 1993-10-18 EP EP93116784A patent/EP0594102A1/en not_active Withdrawn
- 1993-10-19 CA CA002108718A patent/CA2108718A1/en not_active Abandoned
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5668539A (en) * | 1995-08-30 | 1997-09-16 | 1138037 Ontario Ltd. | Thermal emitted radiation detecting device |
| US6753766B2 (en) | 2001-01-15 | 2004-06-22 | 1138037 Ontario Ltd. (“Alirt”) | Detecting device and method of using same |
| US7634341B2 (en) | 2001-03-07 | 2009-12-15 | 1138037 Ontario Ltd. (“Alirt”) | Detecting device and method of using same |
| US7661876B2 (en) | 2007-11-14 | 2010-02-16 | Fluke Corporation | Infrared target temperature correction system and method |
| US8177421B2 (en) | 2007-11-14 | 2012-05-15 | Fluke Corporation | Infrared target temperature correction system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0594102A1 (en) | 1994-04-27 |
| DE4235772A1 (en) | 1994-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4466748A (en) | Thermal imaging apparatus | |
| US4527055A (en) | Apparatus for selectively viewing either of two scenes of interest | |
| US5675149A (en) | Compact thermal camera | |
| EP0277696B1 (en) | Thermal imager | |
| US8167483B2 (en) | Temperature measurement instruments and methods for identifying a selected target area | |
| US7186978B2 (en) | Compact emissivity and temperature measuring infrared detector | |
| US5383645A (en) | Stabilized payload | |
| EP0829707A2 (en) | Compact fast imaging spectrometer | |
| US20080302966A1 (en) | Clip-on infrared imager | |
| CA2086864A1 (en) | High spatial resolution imaging spectrograph | |
| EP0659269A1 (en) | Airborne multiband imaging spectrometer | |
| JPH07507389A (en) | Infrared image recording device | |
| GB2105145A (en) | Infra-red viewing apparatus | |
| EP0226231A2 (en) | IR scanning device for producing a stereoscopic image | |
| CA2108718A1 (en) | Ir remote thermometer | |
| Coppo et al. | Sea and Land Surface Temperature Radiometer detection assembly design and performance | |
| GB2101352A (en) | Optical-mechanical scanner | |
| Scherr et al. | Narcissus considerations in optical designs for infrared staring arrays | |
| US5585632A (en) | Wide-angle infrared cloud imager | |
| US5369276A (en) | Method and system for real-time wavelength identification for infrared detectors | |
| GB2096427A (en) | Infrared imaging and tracking means | |
| US5434406A (en) | Hemispheric matrixsized imaging optical system | |
| US4109149A (en) | Shade reducing aperture stop for thermal imaging systems | |
| GB2247085A (en) | Process of harmonization between the axis of an aiming telescope and that of a heat camera. | |
| RU2786356C1 (en) | Dual-spectrum video surveillance system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |