WO2017068262A1 - Système optique pour imageur thermique - Google Patents
Système optique pour imageur thermique Download PDFInfo
- Publication number
- WO2017068262A1 WO2017068262A1 PCT/FR2016/052631 FR2016052631W WO2017068262A1 WO 2017068262 A1 WO2017068262 A1 WO 2017068262A1 FR 2016052631 W FR2016052631 W FR 2016052631W WO 2017068262 A1 WO2017068262 A1 WO 2017068262A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- image sensor
- mirrors
- sensor
- mirror
- optical
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 76
- 210000001747 pupil Anatomy 0.000 claims abstract description 30
- 239000011159 matrix material Substances 0.000 claims abstract description 7
- 230000005855 radiation Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/002—Arrays of reflective systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/02—Catoptric systems, e.g. image erecting and reversing system
- G02B17/06—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror
-
- 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
- G02B27/1066—Beam splitting or combining systems for enhancing image performance, like resolution, pixel numbers, dual magnifications or dynamic range, by tiling, slicing or overlapping fields of view
-
- 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
- G02B27/143—Beam splitting or combining systems operating by reflection only using macroscopically faceted or segmented reflective surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/10—Mirrors with curved faces
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/17—Bodies with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
- G08B13/193—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems using focusing means
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19617—Surveillance camera constructional details
- G08B13/19626—Surveillance camera constructional details optical details, e.g. lenses, mirrors or multiple lenses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14625—Optical elements or arrangements associated with the device
- H01L27/14629—Reflectors
-
- 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
- H04N23/23—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from infrared radiation only from thermal infrared radiation
-
- 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
- G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
- G02B23/06—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors having a focussing action, e.g. parabolic mirror
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe
- G03B37/04—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe with cameras or projectors providing touching or overlapping fields of view
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14665—Imagers using a photoconductor layer
- H01L27/14669—Infrared imagers
Definitions
- the invention relates to thermal imagers and in particular to an optical system adapted to such imagers.
- a thermal imager may comprise a matrix image sensor sensitive to a wavelength greater than 2 ⁇ , equipped with an optical system for focusing an image on the sensor.
- the optical system may have a configuration similar to the objectives for visible radiation, except that the lenses use a material that is transparent to thermal radiation. Such materials are expensive and generally have a low transmission rate.
- FIG. 1 represents a schematic sectional view of an example of a low cost optical system adapted to thermal radiation, as described in the patent application WO 2002-063872. It is an optical system with mirrors of the Gregorian telescope type.
- the rays from the observed scene reach a concave main mirror (usually a paraboloid) and are returned to a secondary mirror 12 (usually a concave ellipsoid).
- the mirror 12 returns the rays to an image sensor 14 disposed behind a central opening of the main mirror 10.
- the secondary mirror 12 is located between the scene and the main mirror 10. It is fixed on a support 16 which filters the incoming radiation.
- the support 16 must have a high transparency to the thermal rays so as not to impair the sensitivity of the imager.
- the optical system Since the optical system is a telescope, it has a narrow field of view and is unsuitable for indoor scenes. summary
- An optical mirror system for an image sensor comprising two symmetrical concave mirrors located in the same plane and having parallel optical axes, and a matrix image sensor located in front of the mirrors and having two opposite edges. substantially adjacent respectively to the optical axes of the two mirrors.
- the image sensor may be attached to an opaque cover comprising, at the periphery of the image sensor, an entrance pupil in front of each mirror, contained in the surface of the mirror projecting from the image sensor.
- Each pupil and the corresponding mirror may be configured so that a ray parallel to the optical axis reaching the mirror through the pupil is reflected to the nearest edge of the image sensor; and that a limiting inclination radius passing through the pupil and reaching an edge of the mirror under the image sensor is reflected towards an axis of symmetry of the image sensor.
- the pupils may be adjacent respectively to the optical axes.
- the mirrors can have substantially the same form factor as the optical sensor, and have an ellipsoidal surface.
- the optical system may further comprise four concave mirrors with parallel optical axes, configured in four adjacent quadrants, the four corners of the image sensor being substantially adjacent respectively to the four optical axes; and four input pupils disposed respectively at the four corners of the image sensor.
- Figure 1 previously described, shows a schematic sectional view of a conventional optical mirror system for a thermal imager
- FIG. 2 represents a schematic sectional view of an embodiment of a wide field of view optical mirror system
- FIG. 3 represents a schematic front view of an embodiment of a wide-field optical mirror mirror system
- FIG. 4 is a perspective view of the optical system of FIG. 3;
- FIGS. 5A and 5B show an exemplary image projected by the optical system of FIG. 3 on a matrix image sensor and a transformation of the image for the purpose of its processing. Description of embodiments
- an optical system embodiment with a wide field of view is formed by a symmetrical association of two mirror optical subsystems.
- the mirrors 20a and 20b of the two subsystems are concave and have parallel optical axes Oa and Ob oriented towards the scene to be viewed.
- the two mirrors are in the same plane and may be adjacent along a common edge 22 located in a plane of symmetry of the optical system.
- a matrix image sensor 24 is located in a plane parallel to that of the mirrors, between the mirrors and the scene, eccentrically with respect to the optical axes.
- the sensor 24 overlaps the edge 22 and preferably extends to the two optical axes, as shown.
- the position of the sensor plane relative to the focal plane of the mirrors determines the focus distance.
- the focal plane passes through the optical foci Fa and Fb of the mirrors. For distant objects, the focal plane and the plane of the sensor would be merged. To obtain a substantially sharp image with a fixed optical system for objects located a few meters away, as in a room to be monitored, the plane of the sensor can be shifted to the scene relative to the focal plane.
- an incoming ray directed along the optical axis Oa abuts the edge closest to the image sensor 24, reaches the center of the mirror, and is returned to the edge of the sensor in alignment with the optical axis.
- the edges of the physical image sensor are coincident with the edges of the sensitive area of the sensor.
- the sensitive zone may be set back from the edge of the sensor. The principles described here actually apply to the sensitive area of the sensor.
- An oblique radius r2 which reaches the common edge 22 is returned at an angle which depends on the angle of incidence of the ray on the mirror 20a.
- the radius r 2 as shown defines with the optical axis Oa the field of view of the optical subsystem, that is to say that the radius r 2 reaches the maximum inclination among the rays sent back to the sensor by the mirror 20a. .
- the radius r2 is returned to an axis of symmetry of the sensor 24. Then any ray reaching the edge 22 having a slope smaller than that of the radius r2, as a radius r3, is returned to the same, upper, half of the sensor 24.
- This constraint can be satisfied, for example, by an ellipsoidal mirror adapted to the dimensions of the optical system.
- an off-axis input pupil 26a can be provided in the form of a suitably sized orifice formed in a mask 28 that is opaque to the radiation in question.
- a symmetrical pupil 26b is then provided for the second optical subsystem.
- the cover 28 can be placed in a large latitude along the optical axes, the size and position of the pupil 26a being defined by the generatrices formed by the optical axis Oa and the limit radius r2.
- the cover 28 is placed in the plane of the image sensor 24, so that it can directly serve as a fixing support for the sensor.
- the pupil 26a does not block the oblique rays which cross the edge 22 to reach the second mirror 20b. Such rays do not affect the imager because they are reflected by the mirror 20b outside the sensor 24.
- the field of view of the imager can be doubled in the plane of the optical axes.
- four non-axis optical subsystems can be associated as described below.
- FIG. 3 represents a diagrammatic front view of an optical system embodiment with a field of view widened in all directions.
- Four concave mirrors 20a to 20d with parallel optical axes are configured in four adjacent quadrants Q1 to Q4.
- the image sensor 24 may be centered above the four quadrants and its four corners are preferably adjacent respectively to the four optical axes of the mirrors.
- the mirrors can have the same form factor as the sensor and be adjacent along edges contained in two orthogonal planes of symmetry of the optical system.
- the mirrors and the sensor are here square, but they could be rectangular.
- the pupils 26a to 26d are respectively associated with the four mirrors 20a to 20d.
- the pupils may be adjacent respectively to the four optical axes, themselves adjacent to the four corners of the sensor 24 in this embodiment.
- the pupils 26 are furthermore located on diagonals of the image sensor - FIG. 2 can thus be considered as a sectional view along a diagonal of the system of FIG. 3.
- the pupils 26 have been represented in a circular shape. They could be rectangular with the same form factor as the image sensor.
- Circular pupils act as diaphragms - the pupil diameter, which depends on the position of the pupils along the optical axes, influences the depth of field of the optical system and the amount of radiation transmitted to the sensor.
- each pupil is contained in the mirror surface projecting from the image sensor. With this configuration all the rays parallel to the optical axes and passing through the pupils reach the mirrors.
- Dotted areas represent images projected by the pupils 26a and 26d on the plane of the image sensor 24. These images are substantially truncated circles with axes of symmetry delimiting the quadrants of the image sensor.
- the diameter of the truncated circles is in principle equal to half a diagonal of the sensor, so that a diagonal limit ray (r2 in FIG. 2) reaching the meeting point of the four mirrors is reflected towards the center of the image sensor .
- the quality of the mirror surface at adjacent edges defines the quality of the truncated edges of the image circles.
- the images formed in the four quadrants may have scrambled edges along the symmetry axes of the sensor. This is not a problem, as we will see later.
- FIG. 4 is a perspective view of the four-quadrant optical system of FIG. 3. This view represents in the foreground the cover 28, not illustrated in the view of FIG. 3. The other elements of the sensor are visible by transparency under FIG. cache 28.
- the entrance pupils 26 are preferably of frustoconical shape, according to cones defined by the generatrices formed by the optical axes and the radii corresponding r2 limits ( Figure 2). Failing to be frustoconical, the pupils can be formed by several cylindrical parts of different radii approaching the frustoconical shape.
- FIGS. 5A and 5B show an example of an image projected by the optical system of FIG. 3 or 4 on the image sensor 24, and a transformation of the image with a view to its exploitation. The object viewed is a circle in the center of the imager's field of view.
- FIG. 5A in a four-mirror system of the type of FIGS. 3 and 4, the center of the scene is returned to the corners of the sensor, and the corners of the scene are returned to the center of the sensor.
- a circle in the center of the field of view is perceived by the image sensor as respective quarter circles at the four corners of the sensor, as shown.
- FIG. 5B to reconstruct an exploitable image of the circle, the four quadrants of the image supplied by the sensor are diagonally exchanged, as represented by arrows in FIG. 5A.
- quadrant Q1 is exchanged with FIG. quadrant Q3
- quadrant Q2 is exchanged with quadrant Q4.
- the parts initially located at the level of the symmetry axes of the sensor ie the parts formed by the rays reflected by the edges between adjacent mirrors, which can be deteriorated by the surface quality of the edges.
- the imperfections related to the edges are therefore found at the edges of the final image, edges that do not convey in practice any useful information.
- the center of the final image has a blind area corresponding to the part hidden by the sensor.
- This blind zone is however defined between rays penetrating parallel to the optical axes, so that the blind zone corresponds to a projected area of the size of the sensor on the object in the center of the field of view. If the object is far enough away, the projected area may have a size much smaller than that of a pixel of the sensor, and thus be totally imperceptible.
- an imager having a field of view of about 80 ° with ellipsoidal mirrors having a conical constant of 0.199 and a radius of curvature has been realized. 12,067 mm.
- the mirrors and the matrix image sensor had the same diagonal of about 13.6 mm.
- the image sensor was placed in the optical focal plane of the mirrors about 5.7 mm from the vertices of the ellipsoids.
- the pupils had a diameter of 3.8 mm. With these dimensions, it was possible to obtain a satisfactory image of sharpness of 0.2 to 20 m.
- mirrors do not need to be in contact with each other. There may be a margin between the edges of two adjacent mirrors, which margin results in a central band without information on the image sensor. This band, corresponding to the edge of the image, generally does not convey useful information.
- an independent quadrant image sensor can be provided - this would be more expensive than providing a single sensor.
- the edges of the sensor, or more precisely the edges of the sensitive area of the sensor are adjacent to the optical axes.
- this configuration can be respected within the limits of a tolerance margin. If the edges are set back from the optical axes, information can be lost in a central band of the field of view. If the edges exceed the optical axes, the protruding parts of the sensor are not lit and cause a black band in the center of the reconstructed image. This last case is preferable to the first, because there is no loss of information - the black band can be removed by a post-processing of the image.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Lenses (AREA)
- Studio Devices (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680061162.3A CN108139570A (zh) | 2015-10-22 | 2016-10-12 | 用于热成像仪的光学系统 |
JP2018519927A JP2018531427A (ja) | 2015-10-22 | 2016-10-12 | サーマルイメージャのための光学システム |
US15/770,452 US20180324368A1 (en) | 2015-10-22 | 2016-10-12 | Optical system for thermal imager |
EP16793961.0A EP3365718A1 (fr) | 2015-10-22 | 2016-10-12 | Système optique pour imageur thermique |
CA2999799A CA2999799A1 (fr) | 2015-10-22 | 2016-10-12 | Systeme optique pour imageur thermique |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRFR1560109 | 2015-10-22 | ||
FR1560109A FR3042911B1 (fr) | 2015-10-22 | 2015-10-22 | Systeme optique pour imageur thermique |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017068262A1 true WO2017068262A1 (fr) | 2017-04-27 |
Family
ID=55299627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2016/052631 WO2017068262A1 (fr) | 2015-10-22 | 2016-10-12 | Système optique pour imageur thermique |
Country Status (7)
Country | Link |
---|---|
US (1) | US20180324368A1 (fr) |
EP (1) | EP3365718A1 (fr) |
JP (1) | JP2018531427A (fr) |
CN (1) | CN108139570A (fr) |
CA (1) | CA2999799A1 (fr) |
FR (1) | FR3042911B1 (fr) |
WO (1) | WO2017068262A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3091594B1 (fr) * | 2019-01-08 | 2021-01-08 | Centre Scient Et Technique Du Batiment Cstb | Accessoire de vision de couche sous plafond pour detecteur infrarouge |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001004809A (ja) * | 1999-06-22 | 2001-01-12 | Olympus Optical Co Ltd | 光学系及び光学装置 |
US20070036537A1 (en) * | 2005-08-10 | 2007-02-15 | Samsung Electro-Mechanics Co., Ltd. | Thinner mobile camera optical lens system and image forming method using the same |
US20120099848A1 (en) * | 2009-05-05 | 2012-04-26 | Gal Shabtay | Folded optic, camera system including the same, and associated methods |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH596620A5 (fr) * | 1976-06-21 | 1978-03-15 | Cerberus Ag | |
US6469304B2 (en) * | 2000-12-28 | 2002-10-22 | Raytheon Company | Pseudo-randomized infrared blurring array |
WO2005093487A1 (fr) * | 2004-02-26 | 2005-10-06 | Boling, Richard C. | Dispositif de collecte lumineuse |
CN103176346A (zh) * | 2011-12-26 | 2013-06-26 | 长沙科尊信息技术有限公司 | 基于叠加异构双镜面的红外全景成像装置及方法 |
CN104216101A (zh) * | 2014-09-19 | 2014-12-17 | 江苏卡罗卡国际动漫城有限公司 | 一种带有曼金主镜的卡赛格林系统 |
-
2015
- 2015-10-22 FR FR1560109A patent/FR3042911B1/fr not_active Expired - Fee Related
-
2016
- 2016-10-12 EP EP16793961.0A patent/EP3365718A1/fr not_active Withdrawn
- 2016-10-12 CN CN201680061162.3A patent/CN108139570A/zh active Pending
- 2016-10-12 WO PCT/FR2016/052631 patent/WO2017068262A1/fr active Application Filing
- 2016-10-12 CA CA2999799A patent/CA2999799A1/fr not_active Abandoned
- 2016-10-12 JP JP2018519927A patent/JP2018531427A/ja active Pending
- 2016-10-12 US US15/770,452 patent/US20180324368A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001004809A (ja) * | 1999-06-22 | 2001-01-12 | Olympus Optical Co Ltd | 光学系及び光学装置 |
US20070036537A1 (en) * | 2005-08-10 | 2007-02-15 | Samsung Electro-Mechanics Co., Ltd. | Thinner mobile camera optical lens system and image forming method using the same |
US20120099848A1 (en) * | 2009-05-05 | 2012-04-26 | Gal Shabtay | Folded optic, camera system including the same, and associated methods |
Also Published As
Publication number | Publication date |
---|---|
US20180324368A1 (en) | 2018-11-08 |
EP3365718A1 (fr) | 2018-08-29 |
FR3042911A1 (fr) | 2017-04-28 |
FR3042911B1 (fr) | 2018-03-16 |
JP2018531427A (ja) | 2018-10-25 |
CA2999799A1 (fr) | 2017-04-27 |
CN108139570A (zh) | 2018-06-08 |
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