WO2000037970B1 - Extreme temperature radiometry and imaging apparatus - Google Patents
Extreme temperature radiometry and imaging apparatusInfo
- Publication number
- WO2000037970B1 WO2000037970B1 PCT/US1999/029359 US9929359W WO0037970B1 WO 2000037970 B1 WO2000037970 B1 WO 2000037970B1 US 9929359 W US9929359 W US 9929359W WO 0037970 B1 WO0037970 B1 WO 0037970B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- temperature
- scene
- camera
- portions
- heat sink
- Prior art date
Links
Classifications
-
- 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
- G02B23/125—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 head-mounted
-
- 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
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/33—Transforming infrared radiation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Astronomy & Astrophysics (AREA)
- Studio Devices (AREA)
- Closed-Circuit Television Systems (AREA)
- Radiation Pyrometers (AREA)
Abstract
A head-up display, an infrared (IR) camera (18) and electronics are integrated into portable, wrap-around, face-worn vision-enhancement apparatus (10) useful in environments of dense air-borne particulate and thermal extremes. Reflective and opaque lenses (38) are provided at eye level for IR, vision display and blinding purposes. The IR camera is integral with wrap-around system. An optical axis of the IR camera and an axis describing the user's virtual line of sight through the viewing eye converge at a nominal arm's length in front of the user's viewing eye. The imager is preferably an un-cooled focal plane array (20) and associated imaging, storing, processing and displaying electronics are cooled using an integral plural phase heatsink. The apparatus is separate from, but compatible with, helmets and SCBA gear, it can be installed and removed by an individual user. Also provided is enhanced vision via color-coded temperature banding.
Claims
1. A portable infrared camera system for use in fire-fighting, comprising: an optical engine mcluding an infrared camera and a display; a battery adapted to power the optical engine; and a self-contained heat sink thermally connected to the optical engine to receive and store heat from the camera, the heat sink being optimized to preferentially store received heat internally rather than dissipate it to the environment whereby the system can be used for an extended period of time in an environment with a temperature above the temperature of the heat sink.
2. The system of claim 1, wherein the heat sink comprises plural-phase polymer adapted to undergo a phase transition in use to absorb heat.
3. The system of claim 2, wherein the heat sink includes material selected from the group comprising wax, ethylene vinyl acetate copolymer, fatty acids, salt hydrates, fused salt hydrates, and metallic eutectic compounds.
4. The system of claim 2, wherein the heat sink comprises amide wax.
5. The system of claim 2, wherein the heat sink comprises ethylene vinyl acetate copolymer.
6. The system of claim 2, wherein the heat sink comprises, in the ranges of percentages by weight listed:
7. The system of claim 2, wherein the heat sink comprises a material that is solid at temperatures below approximately 65°C.
8. The system of claim 2, wherein the heat sink comprises a material that is liquid at temperatures above approximately 75°C.
9. The system of claim 2, wherein the heat sink comprises a material that melts at a temperature between approximately 65°C and approximately 75°C.
10. The system of claim 1, wherein the system has a weight of approximately 4-pounds or less.
11. The system of claim 1, wherein the display is only in front of one of a user's eyes, and further comprising an opaque blinding expanse in front of the other of a user's eyes.
12. The system of claim 1, wherein the display extends across only an upper portion of a user's field of vision so that an unaided view may be obtained by looking below the display.
13. The system of claim 1, wherein the optical engine is configured to create an image on the display corresponding to a scene viewed by the camera and wherein portions of the image corresponding to those portions of the scene that are within a target temperature range are highlighted in a way to make it possible for a user to readily distinguish portions of the scene within the target temperature range from portions of the scene outside the target temperature range.
14. The system of claim 13, wherein the highlighted portions have a different color than the remainder of the image.
15. The system of claim 14, wherein portions of the image representing corresponding portions of the scene in a second temperature range outside the target temperature range are represented in gray scale based on temperature.
16. The system of claim 14, wherein the image is further color coded to represent those portions of the scene that are at a temperature above an avoidance temperature in a color that is visually distinct from all other portions of the image, thereby distinguishing those portions of the scene that are at a dangerously high temperature.
17. The system of claim 1, wherein the system has an external volume of less than approximately 120-cubic inches, resulting in high functional density for the system.
18. The system of claim 1 further comprising a housing having an internal volume of less than approximately 80-cubic inches, resulting in high functional density for the system.
19. An infrared camera comprising a heat sink that absorbs heat by melting from a solid to a liquid when the camera is used within the normal operating conditions for which it is designed.
20. The apparatus of claim 19, wherein the heat sink comprises plural-phase polymer.
21. The apparatus of claim 19, wherein the heat sink includes material selected from the group comprising wax, ethylene vinyl acetate copolymer, fatty acids, salt hydrates, fused salt hydrates, and metallic eutectic compounds.
22. The apparatus of claim 19, wherein the heat sink comprises, in the ranges of percentages by weight listed:
23. The apparatus of claim 19, wherein the heat sink is contained within a finite volume over normal operating conditions.
24. An apparatus for use in fire-fighting to view an infrared scene in an elevated temperature environment, comprising: an infrared camera having a nominal maximum operating temperature; and a self-contained heat sink thermally connected to the camera to receive and store heat from the camera substantially without dissipation of such heat to the environment when the temperature of the environment is above the nominal maximum operating temperature of the camera, the heat sink having sufficient heat storage capacity to allow the camera to operate for at least several minutes in an environment having a temperature above the nominal maximum operating temperature of the camera.
25. A portable, self-contained apparatus for use in fire- fighting to view an infrared scene where the environmental temperature is above room temperature, comprising: an optical engine including an infrared camera and a display; a battery adapted to power the optical engine; and a self-contained heat sink thermally connected to the camera to receive and store heat from the camera, the heat sink being substantially enclosed in a housing and thereby being substantially isolated from direct thermal contact with the environment.
26. The apparatus of claim 25, wherein the optical engine is disposed in the housing with the heat sink.
27. A portable infrared camera system for use in fire-fighting, comprising: an infrared camera configured to generate an electrical signal representative of an infrared scene; a display device adapted to display an image to a user; and a processor connected to the camera to receive the electrical signal therefrom, the processor further being configured to process the electrical signal to cause an image representative of the infrared scene to be displayed to the user on the display device, where the processor is configured to process the electrical signal to generate a displayed image representative of the scene which has a luminescence that changes with temperature while maintaining a relatively fixed color for portions of the infrared scene which have a temperature in a first predetermined range and which has a markedly different color for portions of the infrared scene which have a temperature within a second predetermined range adjacent the first predetermined range, whereby portions of the scene with a temperature within the first predetermined range can be readily distinguished by the user from portions of the infrared scene with a temperature within the second predetermined range.
28. The system of claim 27, wherein the camera is radiometrically calibrated.
29. The system of claim 27, wherein the luminescence of the displayed image changes with temperature in the second predetera ned range.
30. The system of claim 29, wherein the luminescence of the displayed image changes as a function of temperature in a way that is consistent over the first and second temperature ranges.
31. The system of claim 30, wherein the display is an RGB display and the luminescence of one component of an RGB signal to the display is increased and the other two components of the RGB signal to the display are decreased in the second temperature range.
32. A portable infrared camera system for use in fire-fighting, comprising: an infrared camera adapted to generate pixel data representative of the temperature of corresponding points in a scene viewed by the camera; a display; and a processor adapted to receive pixel data from the camera and generate an image on the display representative of the scene based on the data from the camera, where the processor is adapted to generate the image so that portions of the scene within a preselected temperature range are highlighted so as to be readily distinguishable by a user from portions of the scene having a temperature slightly outside the preselected temperature range.
33. The system of claim 32, wherein the portions of the scene within the predetermined temperature range are chromatically highlighted.
34. The system of claim 32, wherein over at least part of the image the luminescence of the image is proportional to the temperature of the corresponding portion of the scene.
35. The system of claim 32, wherein the preselected temperature range is a small range around human body temperature.
36. The system of claim 32, wherein the preselected temperature range covers temperatures above a predetermined threshold temperature.
37. A portable infrared camera system for use in fire-fighting, comprising: an infrared camera adapted to generate pixel data representative of the temperature of corresponding points in a scene viewed by the camera; a display; and a processor adapted to receive the pixel data from the camera and produce an image on the display representative of the scene based on the pixel data from the camera, where the image produced on the display by the processor is temperature-based gray scale for portions of the scene in a first temperature range and colorized for portions of the scene in a second temperature range.
38. The system of claim 37, wherein the luminescence of the colorized portions of the image scales with temperature.
39. The system of claim 37, wherein the luminescence as a function of temperature of the colorized portions is substantially consistent with the luminescence as a function of temperature of the adjacent gray scale portions.
40. The system of claim 37, wherein the second temperature range is selected to coincide with the temperature of human bodies to facilitate location of victims in a fire.
41. The system of claim 37, wherein the second temperature range is selected to colorize portions of the image corresponding to portions of the scene with a dangerously high temperature.
42. The system of claim 37, wherein the processor is adapted to produce an image on the display which is colorized for portions of the scene in a third temperature range, where the colorization is different for portions of the scene in the third temperature range than the colorization for portions of the scene in the second temperature range.
43. The system of claim 42, wherein the second temperature range is selected to coincide with the temperature of human bodies to facilitate location of victims in a fire.
44. The system of claim 43, wherein the third temperature range is selected to colorize portions of the image corresponding to portions of the scene with a dangerously high temperature.
45. The system of claim 37 further comprising a self- contained, phase-change heat sink adapted to receive and store heat from the camera.
46. The system of claim 37, wherein the second temperature range covers temperatures above a predetermined threshold temperature.
47. The system of claim 37, wherein the camera is radiometrically calibrated.
AMENDED SHEET (ARTICLE t9>
48. A vision-enhancement apparatus for viewing a scene through obscurants by a user wearing the apparatus, the apparatus comprising: a housing configured to be worn by a user; and an optical engine mounted within said housing, said optical engine defining an optical axis, said optical engine being mounted within said housing such that said optical axis converges with a nominal line of sight of a user to define a point of convergence.
49. The apparatus of claim 48, wherein said point of convergence is spaced away from the optical engine by approximately two to four feet.
50. The apparatus of claim 48, wherein said point of convergence is spaced away from the optical engine by approximately three feet.
51. The apparatus of claim 48, wherein said optical engine is mounted such that the optical axis and the nominal line of sight of the user converge at an angle between approximately 4 and 10 degrees.
52. The apparatus of claim 48, wherein said optical engine is mounted such that the optical axis and the nominal line of sight of the user converge in a vertical plane at an angle of approximately 6 degrees and in a horizontal plane at an angle of approximately 8 degrees.
53. A vision-enhancement apparatus comprising: an approximately horseshoe-shaped housing; and an optical engine mounted within said housing.
54. The apparatus of claim 53 further comprising a battery, wherein: the horseshoe-shaped housing is defined by legs interconnected by a front region; and the optical engine and battery counterbalance one another along the legs.
55. The apparatus of claim 53 further comprising a heat sink, wherein: the horseshoe-shaped housing is defined by legs interconnected by a front region; and the optical engine and heat sink counterbalance one another along the legs.
56. The apparatus of claim 53 further comprising a battery and a heat sink, wherein: the horseshoe-shaped housing is defined by legs interconnected by a front region; the optical engine is counterbalanced along the legs by the battery and the heat sink collectively; and the battery and heat sink counterbalance one another along the front region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU45202/00A AU4520200A (en) | 1998-12-11 | 1999-12-10 | Extreme temperature radiometry and imaging apparatus |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/210,167 | 1998-12-11 | ||
| US09/210,167 US6255650B1 (en) | 1998-12-11 | 1998-12-11 | Extreme temperature radiometry and imaging apparatus |
| US14528999P | 1999-07-23 | 1999-07-23 | |
| US60/145,289 | 1999-07-23 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| WO2000037970A2 WO2000037970A2 (en) | 2000-06-29 |
| WO2000037970A3 WO2000037970A3 (en) | 2000-11-23 |
| WO2000037970B1 true WO2000037970B1 (en) | 2000-12-28 |
| WO2000037970A9 WO2000037970A9 (en) | 2002-08-29 |
Family
ID=26842825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1999/029359 WO2000037970A2 (en) | 1998-12-11 | 1999-12-10 | Extreme temperature radiometry and imaging apparatus |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU4520200A (en) |
| WO (1) | WO2000037970A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280881A (en) * | 2013-07-09 | 2015-01-14 | 杭州美盛红外光电技术有限公司 | Portable image device |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6255650B1 (en) | 1998-12-11 | 2001-07-03 | Flir Systems, Inc. | Extreme temperature radiometry and imaging apparatus |
| WO2003060590A2 (en) * | 2001-12-21 | 2003-07-24 | Itt Manufacturing Enterprises, Inc. | Video enhanced night vision goggle |
| SE524024C2 (en) * | 2002-03-01 | 2004-06-15 | Flir Systems Ab | IR camera |
| US7767963B1 (en) | 2006-12-08 | 2010-08-03 | Draeger Safety, Inc. | Thermal imaging camera internal damping system |
| ES2460367B1 (en) * | 2010-06-03 | 2015-05-29 | Aselsan Elektronik Sanayi Ve Ticaret Anonim Sirketi | Electro-optical detector device |
| CN102680109B (en) * | 2012-05-21 | 2014-10-29 | 浙江雷邦光电技术有限公司 | Helmet type thermal imager system |
| WO2016049238A1 (en) * | 2014-09-23 | 2016-03-31 | Flir Systems, Inc. | Modular split-processing infrared imaging system |
| US10182195B2 (en) | 2014-09-23 | 2019-01-15 | Flir Systems, Inc. | Protective window for an infrared sensor array |
| US10230909B2 (en) | 2014-09-23 | 2019-03-12 | Flir Systems, Inc. | Modular split-processing infrared imaging system |
| US10848725B2 (en) | 2017-08-04 | 2020-11-24 | Seek Thermal, Inc. | Color display modes for a thermal imaging system |
| CN111095906B (en) * | 2017-08-04 | 2023-09-01 | 塞克热量股份有限公司 | Color display mode for thermal imaging system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8922146D0 (en) * | 1989-10-02 | 1989-11-15 | Eev Ltd | Thermal camera arrangement |
| US5637389A (en) * | 1992-02-18 | 1997-06-10 | Colvin; David P. | Thermally enhanced foam insulation |
| US6023288A (en) * | 1993-03-31 | 2000-02-08 | Cairns & Brother Inc. | Combination head-protective helmet and thermal imaging apparatus |
| US5389788A (en) * | 1993-12-13 | 1995-02-14 | Hughes Aircraft Company | Infrared transducer and goggles incorporating the same |
| US6023061A (en) * | 1995-12-04 | 2000-02-08 | Microcam Corporation | Miniature infrared camera |
| FR2749177B1 (en) * | 1996-06-03 | 1998-07-17 | Inst Francais Du Petrole | METHOD AND SYSTEM FOR THE REMOTE SENSING OF THE FLAMMABILITY OF THE DIFFERENT PARTS OF A ZONE OVERFLOW BY AN AIRCRAFT |
-
1999
- 1999-12-10 AU AU45202/00A patent/AU4520200A/en not_active Abandoned
- 1999-12-10 WO PCT/US1999/029359 patent/WO2000037970A2/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280881A (en) * | 2013-07-09 | 2015-01-14 | 杭州美盛红外光电技术有限公司 | Portable image device |
| CN104280881B (en) * | 2013-07-09 | 2021-03-23 | 杭州美盛红外光电技术有限公司 | Portable imaging device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000037970A2 (en) | 2000-06-29 |
| AU4520200A (en) | 2000-07-12 |
| WO2000037970A3 (en) | 2000-11-23 |
| WO2000037970A9 (en) | 2002-08-29 |
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Free format text: PAGES 1-28, DESCRIPTION, REPLACED BY NEW PAGES 1-26; PAGES 29-37, CLAIMS, REPLACED BY NEW PAGES 27-33; PAGES 1/11-11/11, DRAWINGS, REPLACED BY NEW PAGES 1/11-11/11 |