WO2000052511A1 - Systeme optique a infrarouges pour camera a infrarouges - Google Patents
Systeme optique a infrarouges pour camera a infrarouges Download PDFInfo
- Publication number
- WO2000052511A1 WO2000052511A1 PCT/JP2000/000045 JP0000045W WO0052511A1 WO 2000052511 A1 WO2000052511 A1 WO 2000052511A1 JP 0000045 W JP0000045 W JP 0000045W WO 0052511 A1 WO0052511 A1 WO 0052511A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- infrared
- optical system
- convex lens
- infrared optical
- image plane
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 61
- 230000004075 alteration Effects 0.000 claims abstract description 71
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000006185 dispersion Substances 0.000 claims abstract description 12
- 238000012937 correction Methods 0.000 claims description 37
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000009499 grossing Methods 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 9
- 229910052732 germanium Inorganic materials 0.000 description 8
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- PFNQVRZLDWYSCW-UHFFFAOYSA-N (fluoren-9-ylideneamino) n-naphthalen-1-ylcarbamate Chemical compound C12=CC=CC=C2C2=CC=CC=C2C1=NOC(=O)NC1=CC=CC2=CC=CC=C12 PFNQVRZLDWYSCW-UHFFFAOYSA-N 0.000 description 3
- 239000005083 Zinc sulfide Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 229910052984 zinc sulfide Inorganic materials 0.000 description 3
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 2
- 201000009310 astigmatism Diseases 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000001259 photo etching Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000004065 semiconductor 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
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/20—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from infrared radiation only
-
- 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
Definitions
- the present invention relates to an infrared optical system used for an infrared camera and forming an image of a subject.
- an infrared optical system used for an infrared camera is required to have a function of forming an image of a subject to be imaged on a detector.
- the aberration of the infrared optical system is large, the image of the subject obtained by the camera is blurred, and the image quality is significantly deteriorated. For this reason, an infrared optical system of an infrared camera is required to have a small aberration.
- one of the methods for realizing an infrared optical system with small aberration is to increase the number of lenses as constituent components.
- the degree of freedom in lens surface, lens thickness, lens spacing, etc. is increased, and the ability of the infrared optical system to correct aberrations is improved.
- the cost of infrared optics such as lens material costs, processing costs, and assembly costs, increases.
- problems such as an increase in weight and dimensions and complication of assembly adjustment arise. Therefore, from this viewpoint, it is preferable that the number of lenses is small.
- FIG. 14 shows, for example, Max's reference ⁇ Design Example for the use of Hybrid Optical Elements in in Applied optics magazine, '' published on December 1, 1969, February 1, 1963, pages 683-3 to 6834.
- FIG. 2 is a cross-sectional view of the conventional infrared optical system shown in the infrared.
- This infrared optical system is used in the infrared region of the wavelength band of 8 to 12 ⁇ m, and has a very small aberration obtained by two germanium lenses.
- the subject side left side in the figure
- the image side right side in the figure
- a holding member 1 holds an aspherical diffractive lens 2 and a spherical lens 3 at an interval from each other.
- the aspherical diffractive lens 2 has a special shape in which the front surface 2a has a spherical shape and the back surface 2b has a diffractive surface on an aspheric surface.
- the spherical lens 3 arranged on the image side of the aspherical diffractive lens 2 has both a front surface 3a and a rear surface 3b having a spherical shape.
- the image of the subject obtained by the aspherical diffractive lens 2 and the spherical lens 3 is converted into an electric signal by the detector 4 facing the back surface 3b of the spherical lens 3.
- the electric signal output from the detector 4 is converted into a video signal by a signal processing means (not shown) and displayed as an infrared image by a display means (not shown).
- a diffractive surface is used to correct aberration.
- the diffractive surface bends an optical path by using the property of light as a wave.
- the wave always travels in the direction in which the wavefronts are aligned, so the direction of travel of the wave is controlled by controlling the wavefront.
- it is necessary to control the wavefront with an accuracy of less than the wavelength, so to make a diffraction surface, surface processing with an accuracy of less than the wavelength of light is required.
- an infrared optical system used for a camera that captures infrared light having a wavelength of about 10 m requires fine surface processing with an accuracy of at least 10 m or less.
- creating a diffractive surface required advanced processing techniques, which increased costs and made mass production difficult. Disclosure of the invention
- the present invention has been made to solve the above-described problems, and has an object to reduce the aberration without increasing the number of lenses and without using fine processing.
- the aim is to obtain a system.
- the infrared optical system of the infrared camera comprises: a holding member; A convex lens made of a low-dispersion material that transmits and transmits infrared rays; a stop provided on the subject side of the convex lens to limit light incident on the convex lens; and a stop disposed near the stop and transmitting infrared rays. And an aberration correction plate for reducing spherical aberration.
- FIG. 1 is a cross-sectional view of an infrared optical system of an infrared power camera according to Embodiment 1 of the present invention
- FIG. 2 is a cross-sectional view of an infrared optical system of an infrared camera according to Embodiment 2 of the present invention
- FIG. 4 is a cross-sectional view showing a modification of the image plane flattening plate of FIG. 3,
- FIG. 5 is a sectional view of an image plane flattening plate according to Embodiment 4 of the present invention.
- FIG. 6 is a sectional view showing a modification of the image plane flattening plate of FIG. 5,
- FIG. 7 is a sectional view showing another modified example of the image plane flattening plate of FIG. 5,
- FIG. 8 is a cross-sectional view showing a main part of an infrared optical system according to Embodiment 5 of the present invention
- FIG. 9 is a cross-sectional view showing a main part of an infrared optical system according to Embodiment 6 of the present invention
- FIG. 11 is a cross-sectional view showing a main part of an infrared optical system according to Embodiment 7 of the present invention.
- FIG. 11 is a cross-sectional view showing a main part of an infrared optical system according to Embodiment 8 of the present invention.
- 9 is a cross-sectional view showing a main part of an infrared optical system according to Embodiment 9, FIG.
- FIG. 13 is a cross-sectional view showing a main part of an infrared optical system according to Embodiment 10 of the present invention
- FIG. 14 is an example of a conventional infrared optical system. It is sectional drawing. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a cross-sectional view of an infrared optical system of an infrared camera according to Embodiment 1 of the present invention, in which the wavelength of infrared light is set to 8 to 12 zm corresponding to an “atmospheric window” (not absorbed by the atmosphere).
- a cylindrical holding member 11 holds a convex lens 12 made of germanium (Ge). Both the front surface 12a and the rear surface 12b of the convex lens 12 are spherical, or one surface is spherical and the other surface is flat.
- an aperture 13 for restricting light incident on the convex lens 12 is held.
- an aberration correction plate 14 made of germanium for reducing aberration of an image due to a subject is held.
- the surface 14a of the aberration correction plate 14 is a flat surface.
- the back surface 14 b of the aberration correction plate 14 has an aspherical shape, but the unevenness is small, so that the thickness can be reduced.
- a detector 15 that converts the image of the subject obtained by the convex lens 12 into an electric signal is opposed to the back surface 1 2b of the convex lens 12.
- the main aberrations that degrade the image quality are chromatic aberration, spherical aberration, coma, astigmatism, and field curvature.
- Chromatic aberration is determined by the dispersion characteristics of the lens material and the refractive power of the lens. Since the refractive power of the infrared optical system is determined by the convex lens 12, the chromatic aberration is also determined by the convex lens 12.
- germanium forming the convex lens 12 and the aberration correction plate 14 has a high transmittance for infrared rays in the above-mentioned wavelength band, so that the convex lens 12 has low absorption of infrared rays and a bright image can be obtained.
- germanium has a small dispersion (change in refractive index with respect to wavelength) with respect to infrared rays in the above-mentioned wavelength band. Therefore, the chromatic aberration generated by the convex lens 12 is small, the chromatic aberration in the entire infrared optical system is also small, and the deterioration of the image quality due to the color difference can be ignored.
- field curvature is an aberration that is proportional to the square of the image height (displacement from the optical axis). With the above configuration, the curvature of field cannot be removed, but if the image height is small, the curvature of field will be small enough to cause no problem.
- the aberration correction plate 14 disposed near 3 is designed to eliminate spherical aberration. That is, as shown in FIG. 1, by adding an aberration correction plate 14 to the convex lens 12 and the aperture 13 to form an infrared optical system, the aberration correction plate 14 mainly reduces spherical aberration. Work, and obtain an image of the subject with less aberration Can be As described above, according to the configuration of the first embodiment, the aberration can be reduced without increasing the number of lenses and without using fine processing.
- germanium is shown as a material for the convex lens 12 and the aberration correction plate 14, but other materials having a high infrared transmittance and a small dispersion may be used. Is also good. For example, since silicon (S i) satisfies this condition, an infrared optical system with small aberration can be obtained by using silicon for at least one of the convex lens 12 and the aberration correction plate 14.
- the convex lens 12 and the aberration correction plate 14 can be manufactured by polishing, grinding using a precision lathe, or molding. Further, when germanium or silicon is used as a material, it can be manufactured by using a semiconductor manufacturing technique such as a photoetching method or a holographic method.
- a material having a high infrared transmittance and a small dispersion is selected as the material of the aberration correction plate 14.
- the aberration correction plate 14 is intended to correct spherical aberration and has a small refraction effect to bend light, chromatic aberration generated by the aberration correction plate 14 is small even with a material having a relatively large dispersion. Therefore, if the material of the aberration correction plate 14 is transparent to infrared rays, the dispersion need not be sufficiently small.
- materials such as zinc sulfide (ZnS), zinc selenide (ZnSe), and gallium arsenide (GaAs) have a large dispersion, but transmit infrared rays, so that the aberration correction plate 14 It can be used as a material.
- a plastic material is also a material that transmits infrared rays, and thus can be used as a material for the aberration correction plate 14.
- FIG. 2 is a cross-sectional view of the infrared optical system of the infrared power camera according to Embodiment 2 of the present invention.
- an image plane flattening plate 16 made of germanium is held by a holding member 11 on the image side of the convex lens 12.
- the image plane flattening plate 16 has a function of canceling the field curvature remaining in the image.
- Other configurations are the same as those in the first embodiment.
- the field curvature is not removed (this is not a problem when a small detector 15 is used, O 00/52511
- the use of the image plane flattening plate 16 corrects the curvature of field, so that an image with less aberration can be obtained in a wider field of view.
- the field curvature is proportional to the square of the image height, and if the field curvature remains, the image surface is formed into a spherical shape.
- the curved image surface can be flattened by forming the thickness of the image plane flattening plate 16 into a curved shape such that the thickness increases as the image height increases.
- the thickness is changed according to the image height by making the front surface 16a concave and the back surface 16b flat.
- the image plane is flattened, and even when a large detector 15 is used, an infrared optical system with small aberration can be obtained, and a high-quality infrared image can be obtained. That is, aberration can be reduced without increasing the number of lenses and without using fine processing.
- the surface 16a of the image plane flattening plate 16 is a curved surface, but the back surface 16b may be a curved surface, or both surfaces of the front surface 16a and the back surface 16b may be curved surfaces.
- the image plane flattening plate 16 does not need to have a sufficiently small dispersion as long as it is transparent to infrared rays, like the aberration correction plate 14.
- silicon, zinc sulfide, zinc selenide, or gallium arsenide Or a plastic material for example, silicon, zinc sulfide, zinc selenide, or gallium arsenide Or a plastic material.
- the image plane flattening plate 16 can be manufactured by a processing method such as polishing, grinding, molding, photoetching or holographic method. Embodiment 3.
- an image plane flattening plate having a curved surface for canceling the field curvature is used.
- the thickness of the field flattening plate 16 may be changed not by a curve but by a linear approximation.
- the thickness may be changed stepwise as shown in FIG. 3, or may be changed into a triangle as shown in FIG. With such a configuration, processing can be easily performed at the time of manufacturing.
- these steps or triangular changes may be provided on the back surface 16b or on both surfaces.
- the lengths of all the line segments constituting the staircase shape in FIG. 3 do not need to be the same, and the angles of the edges of all the steps may be any angles.
- the image plane flattening plate 16 may have a hole 16c at the center as shown in FIGS. 5 to 7, for example.
- Fig. 5 shows the image plane flattening plate 16 of Fig. 2 with holes 16c
- Fig. 6 shows the shape of Fig. 3 with holes 16c
- Fig. 7 shows the shape of Fig. 4. Drilled holes 16c are shown.
- a hole 16c may be formed in the center of the image plane flattening plate 16 having another shape.
- the correction of the curvature of field by the image plane flattening plate 16 is performed so that the peripheral portion thereof coincides with the central portion with reference to the image position of the central portion. Therefore, the image plane flattening plate 16 has almost no correction effect at the center, and a hole 16c can be formed at the center.
- a hole 16c can be formed at the center of the image plane flattening plate 16
- the image quality of the image is not affected by infrared ray absorption and wavelength dispersion by the image plane flattening plate 16. Degradation can be reduced.
- FIG. 8 is a sectional view showing a main part of an infrared optical system according to Embodiment 5 of the present invention.
- the holding member 11 and the image plane flattening plate 16 are both formed of a plastic material transparent to infrared rays and are integrally formed.
- Other configurations are the same as those of the second embodiment.
- FIG. 9 is a sectional view showing a main part of an infrared optical system according to Embodiment 6 of the present invention.
- the holding member 11 and the aperture 13 are both made of a plastic material and are integrally formed.
- Other configurations are the same as those of the first and second embodiments.
- Embodiment 7 since the holding member 11 and the aperture 13 are integrated, the number of components can be reduced, and the number of component manufacturing processes and assembly processes can be reduced. In addition, since there is no tolerance generated during assembly between the integrated parts, the entire infrared optical system can be easily assembled. Embodiment 7
- FIG. 10 is a sectional view showing a main part of an infrared optical system according to Embodiment 7 of the present invention.
- a peripheral light-shielding portion 17 as an aperture is provided at a peripheral portion of the surface 14a of the aberration correction plate 14.
- the peripheral light-shielding portion 17 is formed, for example, by applying black paint that does not transmit infrared light.
- Embodiment 8 since it is possible to omit the drawing as a separate part, the number of parts can be reduced, and the number of steps of manufacturing and assembling parts can be reduced.
- FIG. 11 is a sectional view showing a main part of an infrared optical system according to Embodiment 8 of the present invention.
- the holding member 11 and the aberration correction plate 14 are both made of a plastic material and are integrally formed.
- Other configurations are the same as those of the first and second embodiments. According to such a configuration, since the holding member 11 and the aberration correction plate 14 are integrated, the number of components can be reduced, and the number of component manufacturing processes and assembly processes can be reduced. Can be. In addition, since there is no tolerance that occurs during assembly between the integrated components, the assembly of the entire infrared optical system becomes easy.
- Embodiment 9 is a sectional view showing a main part of an infrared optical system according to Embodiment 8 of the present invention.
- the holding member 11 and the aberration correction plate 14 are both made of a plastic material and are integrally formed.
- Other configurations are the same as those of the first and second embodiments. According to such a configuration, since the holding member 11 and the
- the stop 13 is a separate member from the holding member 11 and the aberration correction plate 14.
- the holding member 11 and the aberration correction plate 14 are A peripheral light-shielding portion 17 similar to that of the seventh embodiment may be applied to the aberration correction plate 14.
- the image plane flattening plate 16 is held by the holding member 11, but, for example, as shown in FIG.
- An image plane flattening plate 16 and a detector 15 of an infrared camera may be held in the die 18.
- the holder 18 may be configured as a part of the holding member 11. That is, in FIG. 2, the detector 15 may be held by the holding member 11.
- the front surface 12 a and the back surface 12 b of the convex lens 12 are spherical, or one surface is spherical and the other surface is flat, but both surfaces or one of the surfaces is aspheric. It may be.
- the degree of freedom of the surface is increased, and the aberration can be reduced by using the degree of freedom for aberration correction. Further, the amount of aberration correction required for the aberration correction plate can be reduced.
- processing to create an aspherical surface requires rougher processing than fine processing to create a diffractive surface.
- the front and back surfaces of the convex lens may be formed in a Fresnel lens shape, whereby the thickness of the lens can be reduced even for a lens having the same refractive power, and the optical path length of light passing through the inside can be shortened. Therefore, absorption of infrared rays by the convex lens is reduced, and a brighter image can be obtained. Processing to make Fresnel lenses requires more rough processing than fine processing to make diffraction surfaces.
- one convex lens 12 is used, but a plurality of convex lenses may be provided, which increases the lens surface, the lens thickness, the lens interval, and the like, and increases the degree of freedom.
- the aberration can be reduced by using the power for aberration correction. Further, the amount of aberration correction required for the aberration correction plate can be reduced.
- the wavelength of the infrared light is set to 8 to 12 ⁇ m, but the present invention can be applied to other infrared wavelength regions.
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Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00900146A EP1077386A4 (en) | 1999-03-03 | 2000-01-07 | INFRARED OPTICAL SYSTEM FOR INFRARED CAMERA |
US09/703,642 US6535332B1 (en) | 1999-03-03 | 2000-11-02 | Infrared optical system for infrared cameras |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11/55333 | 1999-03-03 | ||
JP5533399 | 1999-03-03 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/703,642 Continuation US6535332B1 (en) | 1999-03-03 | 2000-11-02 | Infrared optical system for infrared cameras |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000052511A1 true WO2000052511A1 (fr) | 2000-09-08 |
Family
ID=12995621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/000045 WO2000052511A1 (fr) | 1999-03-03 | 2000-01-07 | Systeme optique a infrarouges pour camera a infrarouges |
Country Status (3)
Country | Link |
---|---|
US (1) | US6535332B1 (ja) |
EP (1) | EP1077386A4 (ja) |
WO (1) | WO2000052511A1 (ja) |
Cited By (9)
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EP1275996A1 (en) * | 2000-12-19 | 2003-01-15 | Mitsubishi Denki Kabushiki Kaisha | Field flattener |
JP2008128913A (ja) * | 2006-11-22 | 2008-06-05 | Matsushita Electric Works Ltd | 赤外線検出装置 |
JP2008528987A (ja) * | 2005-01-26 | 2008-07-31 | アナログ・デバイシズ・インコーポレーテッド | センサ |
JP2012070431A (ja) * | 2004-01-26 | 2012-04-05 | Digital Optics Corp | サブピクセル解像度を有する薄型カメラ |
WO2013171969A1 (ja) * | 2012-05-16 | 2013-11-21 | ソニー株式会社 | 撮像光学系、撮像装置 |
WO2013179592A1 (ja) * | 2012-05-31 | 2013-12-05 | ソニー株式会社 | 赤外線光学系、赤外線撮像装置 |
US8953087B2 (en) | 2004-04-08 | 2015-02-10 | Flir Systems Trading Belgium Bvba | Camera system and associated methods |
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US6833822B2 (en) * | 2000-12-21 | 2004-12-21 | Raytheon Company | Method and apparatus for generating a visible image with an infrared transmissive window |
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- 2000-01-07 WO PCT/JP2000/000045 patent/WO2000052511A1/ja not_active Application Discontinuation
- 2000-01-07 EP EP00900146A patent/EP1077386A4/en not_active Withdrawn
- 2000-11-02 US US09/703,642 patent/US6535332B1/en not_active Expired - Fee Related
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Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1275996A4 (en) * | 2000-12-19 | 2003-06-11 | Mitsubishi Electric Corp | FIELD FLATTENER |
US6803988B2 (en) | 2000-12-19 | 2004-10-12 | Mitsubishi Denki Kabushiki Kaisha | Field flattener for flattening a bent image surface |
EP1275996A1 (en) * | 2000-12-19 | 2003-01-15 | Mitsubishi Denki Kabushiki Kaisha | Field flattener |
JP2012070431A (ja) * | 2004-01-26 | 2012-04-05 | Digital Optics Corp | サブピクセル解像度を有する薄型カメラ |
US8953087B2 (en) | 2004-04-08 | 2015-02-10 | Flir Systems Trading Belgium Bvba | Camera system and associated methods |
JP2008528987A (ja) * | 2005-01-26 | 2008-07-31 | アナログ・デバイシズ・インコーポレーテッド | センサ |
JP2008128913A (ja) * | 2006-11-22 | 2008-06-05 | Matsushita Electric Works Ltd | 赤外線検出装置 |
WO2013171969A1 (ja) * | 2012-05-16 | 2013-11-21 | ソニー株式会社 | 撮像光学系、撮像装置 |
JPWO2013171969A1 (ja) * | 2012-05-16 | 2016-01-12 | ソニー株式会社 | 撮像光学系、撮像装置 |
US10215970B2 (en) | 2012-05-16 | 2019-02-26 | Sony Corporation | Image-pickup optical system and image pickup apparatus to correct aberration |
WO2013179592A1 (ja) * | 2012-05-31 | 2013-12-05 | ソニー株式会社 | 赤外線光学系、赤外線撮像装置 |
JPWO2013179592A1 (ja) * | 2012-05-31 | 2016-01-18 | ソニー株式会社 | 赤外線光学系、赤外線撮像装置 |
US9632291B2 (en) | 2012-05-31 | 2017-04-25 | Sony Corporation | Infrared optical system, infrared image capturing apparatus |
JP7055257B1 (ja) * | 2021-06-10 | 2022-04-15 | 三菱電機株式会社 | 赤外光学系 |
WO2022259443A1 (ja) * | 2021-06-10 | 2022-12-15 | 三菱電機株式会社 | 赤外光学系 |
KR102600738B1 (ko) * | 2023-04-11 | 2023-11-10 | 주식회사 제이디 | 거친 표면 열화상 검사 장치 |
Also Published As
Publication number | Publication date |
---|---|
EP1077386A1 (en) | 2001-02-21 |
EP1077386A4 (en) | 2005-11-30 |
US6535332B1 (en) | 2003-03-18 |
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