EP4639255A1 - Lunette de visée ou d'observation améliorée - Google Patents
Lunette de visée ou d'observation amélioréeInfo
- Publication number
- EP4639255A1 EP4639255A1 EP23836421.0A EP23836421A EP4639255A1 EP 4639255 A1 EP4639255 A1 EP 4639255A1 EP 23836421 A EP23836421 A EP 23836421A EP 4639255 A1 EP4639255 A1 EP 4639255A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- display
- micro
- image
- glasses according
- observation
- 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.)
- Pending
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
- G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
- G02B23/10—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors reflecting into the field of view additional indications, e.g. from collimator
- G02B23/105—Sighting devices with light source and collimating reflector
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G1/00—Sighting devices
- F41G1/30—Reflecting-sights specially adapted for smallarms or ordnance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G1/00—Sighting devices
- F41G1/32—Night sights, e.g. luminescent
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/12—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices with means for image conversion or intensification
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1086—Beam splitting or combining systems operating by diffraction only
-
- 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
-
- 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
- G02B27/32—Fiducial marks and measuring scales within the optical system
Definitions
- the field of invention is that of shooting glasses, in particular reflex viewfinders, which make it possible to superimpose a reticle on the observed scene.
- the weapon can also include for daytime aiming a clear sight (or "reflex"), that is to say an optical assembly making it possible to superimpose on the exterior a symbol or a light point in the axis of sight.
- This clear viewfinder can optionally be combined with a switchable magnifying lens. It may also include a laser pointer and a magnifying daytime bezel.
- the weapon may include: a laser pointer, a light-intensifying riflescope called “IL”, an infrared riflescope called “IR”, an adapter or “Clip-on” with light intensifier or infrared positioned upstream of a daytime rifle scope, a sighting device comprising night vision binoculars associated with a clear viewfinder attached to the weapon.
- a laser pointer a light-intensifying riflescope called “IL”
- IR infrared riflescope
- IR infrared riflescope
- Clip-on with light intensifier or infrared positioned upstream of a daytime rifle scope
- a sighting device comprising night vision binoculars associated with a clear viewfinder attached to the weapon.
- the clear viewfinder solution is particularly appreciated because it offers good precision, while preserving a good perception of the overall situation, the clear viewfinder transmitting the landscape without magnification.
- Aiming using a laser pointer, widely used, particularly at night, is very interesting because it allows rapid fire in dynamic combat, without requiring aligning the eye behind a viewfinder, or even supporting the weapon in extreme situations.
- the laser pointer remains indiscreet, especially at night. Even when it is a near-infrared pointer, it is easily detectable with night vision binoculars or even with some equipment using a sensitive near-infrared camera.
- Infrared or thermal shooting glasses have the same disadvantages but offer some significant advantages: night vision, including in total darkness, improved vision in the mists and smoke of the battlefield and above all the ability to "decamouflage" from any hot target.
- some sighting equipment includes an IL or IR riflescope topped with a clear viewfinder.
- the scope includes a thermal camera and a viewing device.
- the thermal camera comprises a focusing objective 1 and a photosensitive receiver 2.
- the display device comprises a micro-display 3 and an eyepiece 4.
- the clear viewfinder comprises a light symbol 5 and collimation optics 6 and superposition optics (typical a separating blade) with direct vision 7.
- the architecture of Figure 2 consists of combining a reflex viewfinder architecture "evolved" with a single display 3 which is responsible for displaying everything: video stream, symbology, reticle, etc.
- the image of the display is sent back to infinity using an eyepiece 3.
- the fusion with the scene is done using a semi-reflecting blade 7.
- the reflex viewfinder with display of Figure 2 coupled to a camera 2 with light intensification or infrared thus presents real added value because it provides additional assistance for highlighting a target in difficult conditions (camouflage of the target, darkness, etc.) by compactly combining “night” and “day” vision.
- an object of the invention is a sighting or observation telescope comprising in particular a camera, a first video micro-display displaying an image of the exterior landscape acquired by the camera and a second video micro-display.
- the use of two displays makes it possible to make the viewfinder of the invention more versatile and more robust.
- the bezel of the invention allows operation in a “degraded” mode via the display of a customizable red dot / reticle with an autonomy of a few hundred hours.
- the user can extend his mission or when the capacity of the battery powering the viewfinder drops below a critical threshold.
- an object of the invention is a sighting or observation telescope having a sighting or observation axis x and comprising, in a mechanical structure:
- the first object a first video micro-display displaying an image of the exterior landscape acquired by the camera, called the first object
- an optical combination device arranged optically downstream of the eyepiece and is adapted to form an image at infinity of the second object, called the second image, and to superimpose the first and the second image on the external landscape.
- the second micro-display is a micro-display with low power consumption compared to the first micro-display.
- the second microdisplay has a refresh frequency less than or equal to 2 Hz, the first microdisplay having a refresh frequency greater than or equal to 20 Hz.
- the glasses comprising a battery powering the camera, the first and second video micro-displays and a processor, said processor being configured to operate the battery in two distinct modes consisting of : - in a first mode, power the first video micro-display and not power the second video micro-display or power the first and the second micro-display when a battery capacity is greater than a predetermined limit or when the user chooses, for example by pressing a remote control member on said mechanical structure,
- the predetermined limit corresponds to a battery autonomy in the first operating mode of less than 1 hour of use.
- the first micro-display emits radiation in a first spectral range and the second micro-display emits radiation in a second spectral range, separate from the first spectral range or the first and second micros -displays emit radiation in the same spectral range but presenting a crossed polarization.
- the optical combination device comprises:
- the holographic or diffractive element or said metasurface has a holographic treatment and/or a structure adapted specifically to form an image of rays having a wavelength included in the second spectral range and adapted (e) to transmit the first spectral range.
- the holographic or diffractive element or said metasurface is deposited or attached to the flat semi-reflective surface.
- the holographic or diffractive element or said metasurface is separated from the planar semi-reflective surface.
- the optical combination device comprises:
- the optical combination device comprises:
- a light guide with pupil expansion arranged on the optical path of the rays coming from the second display and adapted to extend a pupil of the additional eyepiece in two directions of space while also participating in said superposition of the first and the second image on the exterior landscape.
- FIG.1 a schematic view of a riflescope of the prior art
- FIG.2 a schematic view of a riflescope of the prior art
- FIG.3A a perspective view of a sighting or observation telescope according to the invention
- FIG.3B a schematic view of a sighting or observation telescope according to the invention
- FIG.3C a perspective view of a sighting or observation telescope according to a preferred embodiment of embodiment M1 of the invention
- FIG.4 a schematic representation of an embodiment of the telescope of the invention
- FIG.5 a schematic representation of an embodiment of the telescope of the invention
- FIG.6 a schematic representation of an embodiment of the telescope of the invention
- Figure 3A represents a perspective view of a sighting or observation telescope 10 according to the invention.
- Figure 3B is a schematic representation of the elements included in the mechanical structure SM of the sighting or observation telescope 1 according to the invention having a sighting or observation axis x.
- the telescope 10 essentially comprises two main subassemblies which are a camera C1 and a DV display device whose structure is detailed more precisely in FIG. 3B.
- the DV display device comprises a first and a second microdisplay MA1, MA2, an eyepiece OC associated with the first display MA1 and an optical combination device SC.
- the optical combination device SC is mounted above the camera Cl.
- the camera is above, or on the side of the optical combination device SC. All optical and electronic components are integrated into the waterproof SM mechanical structure which protects them from the external environment and shocks.
- This SM structure includes a mechanical fixing interface IF allowing it to be fixed on a weapon equipped with a standard interface.
- This interface is, for example, a “Picatinny” rail or its equivalent.
- the structure also includes an IC set of buttons and control elements allowing in particular the On/Off commands of the various functions of the equipment, the brightness adjustments of the video microdisplays MA1, MA2, the electronic and mechanical adjustments of simbleautage, the electronic adjustments for superimposing the different images generated on the exterior landscape. It can be placed on one of the two side walls of the bezel.
- the assembly includes three buttons arranged on the left side of the bezel, other buttons being arranged on the right side of the bezel.
- the camera Cl is a thermal camera, comprising an infrared objective Ol operating in the spectral band located between 8 pm and 12 pm and an infrared sensor CPT sensitive in the same spectral band or between 3 and 5 /zm..
- the camera is a low light level camera using a low noise “CMOS” CPT sensor, “CMOS” being the acronym for “Complementary Metal Oxide Semiconductor” or an “EB-CMOS” sensor, an acronym for “Electro-Bombarded CMOS” or any other low-level digital light camera.
- CMOS complementary Metal Oxide Semiconductor
- EB-CMOS EB-CMOS
- the camera can also be a “SWIR” camera, an acronym for “Short Wave InfraRed” operating in the spectral band between 1 pm and 2 pm, capturing nocturnal light resulting from nocturnal luminescence or “night glow” and also offering decamouflage capabilities.
- the camera Cl comprises power supply, sensor control and image processing electronics as well as a power supply unit (not shown) receiving several batteries or a rechargeable battery pack so as to ensure its operation. autonomy which is for example placed at the rear of the telescope, on the observer's eye side.
- the DV display device comprises the first video micro-display MA1, the eyepiece OC forming an image of the first video micro-display at infinity and the electronics necessary for powering and controlling the first micro-display.
- the first micro-display MA1 displays a video aiming reticle, possibly enriched with elevation correction elements or symbols or stadimetric graduations. It also displays an image of the exterior landscape acquired by the camera, called the first object.
- R1 the radiation emitted by the first micro-display MA1.
- the first micro-display MA1 only displays the image of the exterior landscape acquired by the camera.
- the DV display device further comprises the second video microdisplay MA2 and the optical combination device SC.
- second object the image displayed by the second video micro-display MA2 and we denote R2 the radiation emitted by the second micro-display MA2.
- the optical combination device SC is arranged optically downstream of the eyepiece OC and is adapted to form an infinite image of the second object, called the second image, and to superimpose the first and second images on the landscape. outside.
- SC optical combination devices are described below (see Figures 4 to 6).
- the first and second video micro-displays MA1, MA2 are, by way of example, “OLED” displays, acronym meaning “Organic Light Emmitting Diode”, “LCD”, acronym meaning “Liquid Crystal Display”, or “LCOS”, an acronym meaning “Liquid Crystal On Silicon”.
- the use of two displays makes it possible to make the telescope of the invention more versatile by combining several functions (for example a display relaying an IR image in a spectral band between 1 and 2 pm and another relaying a thermal image (in a spectral band between 2 and 15 pm).
- this makes the bezel of the invention more robust, for example by allowing it to switch to the second micro-display in the event of a malfunction of the first micro-display.
- the bezel of the invention allows operation in a “degraded” mode via the display of a red dot / Customizable reticle with a battery life of a few hundred hours.
- the user can extend his mission or when the capacity of the battery powering the viewfinder drops below a critical threshold.
- the second micro-display is a micro-display with low power consumption compared to the first micro-display.
- low power consumption we mean here that the second micro-display has a power consumption of between 0.5 mW and 10 mW, while the first micro-display has a power consumption greater than or equal to 50 mW.
- the second micro-display displays a red dot or a light symbol.
- the luminous object being fixed over time, the power consumption of the second micro display is greatly reduced.
- the second micro-display has a refresh frequency less than or equal to 2 Hz in order to reduce its electrical consumption.
- the refresh rate of the first micro-display is high in order to be compatible with a video stream.
- the first micro-display has a refresh rate greater than or equal to 20 Hz.
- the first video micro-display MA1 is an OLED MDP07 from Microoled. It allows the reflex viewfinder to operate nominally by projecting all available information: reticle, symbology, image, video stream, etc.
- the second video micro-display MA2 is an OLED MDP05 from Microoled.
- the first micro-display MA1 only displays the image of the exterior landscape acquired by the camera, while the second micro-display MA2 displays an aiming reticle .
- Figure 3C illustrates a preferred embodiment of embodiment M1, in which the telescope 10 comprises a battery BT powering the camera Cl, the first and second video micro-displays MA1, MA2 and a processor UT controlling the operation of the battery in a first and a second mode.
- the battery powers the first video micro-display and does not power the second video micro-display when a capacity of the battery is greater than a predetermined limit.
- the battery powers the two micro-displays MA1, MA2 in the first operating mode.
- the battery powers the second video micro-display and does not power the first video micro-display when the battery capacity is less than the predetermined limit.
- the UT processor allows the battery to operate in a second “degraded” mode in order to save the autonomy of the telescope 10 when the battery capacity falls below a limit defined by the user or the manufacturer.
- this degraded mode only a simple reticle can be used by the user.
- the reticle is displayed in combination with at least one element displaying information on the viewfinder, for example a low battery indicator and/or elements allowing different adjustments to be made such as electronic simbleage adjustment, brightness adjustment , etc ...
- the predetermined battery limit corresponds to a battery autonomy in the first operating mode of less than 1 hour of use.
- this limit is equal to 1000 mAh at ⁇ 50%.
- the processor is further configured so that the battery operates in the second mode (power supply of the second video micro-display and not of the first video micro-display) when the processor detects a malfunction of the first display or the Cl camera.
- the malfunction may be a power supply problem.
- This variant makes it possible to obtain a more robust bezel 10.
- the processor is further configured so that the battery operates in the second mode or in the first mode depending on the selection of the user, for example by pressing one of the remote control elements IC on the mechanical structure SM.
- This variant makes it possible to obtain a more versatile telescope by selecting an enriched mode (first mode) or degraded mode (second mode) depending on the mission and its evolution.
- the telescope of the invention is a reflex viewfinder and the optical chain consisting of the camera, the first micro-display and the eyepiece has a unit magnification, the image of the first micro-display being consistent with that of the exterior landscape.
- the optical combination device SC then ensures the perfect superposition of the image of the micro-display on the landscape.
- the telescope has a magnification greater than one.
- the telescope 1 comprises for example an afocal optical system arranged optically downstream of the optical combination device SC to form a superimposed image of the first and the second micro-display and of the observed scene with a magnification greater than 1.
- the optical combination device SC is an optical element performing a collimation function for the beam coming from the second micro-display and a superposition function by superimposing the image of the first micro-display and the image of the second micro-display on the exterior landscape.
- the first micro-display emits radiation R1 in a first spectral range and the second micro-display emits radiation R2 in a second spectral range, separate from the first spectral range. This also makes it possible to guarantee optimal transmission of the flow coming from the observed scene and the flow coming from the first micro-display.
- the first and second spectral range have a spectral range less than or equal to 20 nm, for example by the addition of spectral filters arranged in front of the micros- display.
- the two micro-displays emit radiation R1, R2 respectively in the same spectral range but presenting a crossed polarization.
- Figure 4 is a schematic representation of an embodiment of the telescope 10 in which the optical combination device SC is a holographic or diffractive EH element, or even a metasurface.
- the optical combination device SC comprises a planar semi-reflecting surface SR or a surface SR comprising a dichroic treatment adapted to reflect the spectral range of the radiation R1, inclined at approximately 45 degrees relative to the axis of sight or d 'observation x.
- approximately 45 degrees we mean 45 degrees to ⁇ 5 degrees.
- the flat semi-reflective surface (or the surface with a dichroic treatment) SR is suitable for superimposing the image of the first micro-display (the first image) and the image of the second micro-display (the second image) on the exterior landscape.
- the semi-reflecting surface is integrated into a separator blade comprising two flat and parallel faces.
- the semi-reflective surface is integrated into a separator cube comprising two flat and parallel faces or even a prism.
- the holographic or diffractive element or the metasurface EH is arranged on the optical path of the rays R2 coming from the second display.
- the holographic or diffractive element or the metasurface EH is adapted to form the image at infinity of the second micro-display.
- the holographic optical elements are optical components obtained by recording a two-wave interference phenomenon in a photosensitive material, the interference causing variations in optical index inside the material which are preserved when the hologram is then developed. These elements are called thick phase holograms to the extent that the photosensitive material must have a certain thickness to allow the recording of a significant number of interference fringes and also to the extent that variations in index only cause variations phase on the incident light waves without variation in amplitude. These elements can operate by reflection or transmission. These holographic elements exhibit a number of remarkable properties. It is, in fact, possible to obtain a wide variety of optical functions by varying the shape of the recording waves. These functions are, in part, independent of the shape of the support of the holographic optical element. Thus, a holographic optical element recorded on a plane support can possess optical power and have a function comparable to that of a prism, a lens or a mirror.
- the holographic processing is thus adapted to present an optical power in order to be able to perform the function of collimation of the rays R2 coming from the second display.
- these holographic elements have, by nature, spectral selectivity.
- the holographic component reflects light in a given spectral band and is transparent outside this spectral band, the spectral band depending on the recording wavelength and more generally, on the recording conditions (see in particular the article “Coupled Wave Theory for thick Hologram Gratings”, The Bell System Technical Journal, Vol. 48, Nov. 1969, No. 9 for all information on the diffractive operation of this type of hologram).
- the first micro-display emits radiation in a first spectral range and the second micro-display emits radiation in a second spectral range disjoint from the first spectral range, the first and the second spectral range having a spectral range less than or equal to 20 nm.
- the holographic element EH has a holographic treatment and/or a structure adapted specifically to form an image at infinity of rays having a wavelength included in the second spectral range and adapted to transmit the first spectral range.
- this spectral selectivity can also come from an angle of incidence of the rays coming from the first display relative to the EHD element.
- the two micro-displays MA1, MA2 emit radiation R1, R2 in the same spectral range but exhibiting cross polarization.
- one or more polarized screens are arranged on the optical path of the radiation R1 so that the element EH forms an image at infinity of the rays having the polarization associated with the micro-display MA2 and to transmit the rays presenting the polarization associated with the MA1 micro-display.
- the holographic or diffractive element or the metasurface EH is arranged so as to be separated from the planar semi-reflecting surface SR.
- This embodiment makes it easier to design and manufacture the EH and SR elements. Indeed, it is then possible to design an element EH in such a way that it presents an optical power for the rays R2 to carry out the collimation function, without it also carrying out a superposition function for the first image and the second image on the exterior landscape.
- the holographic or diffractive element or the metasurface EH is arranged so as to be substantially perpendicular to the axis of sight or observation x. This maximizes the compactness of the telescope. the invention.
- the element EH is a metasurface or a diffractive element
- the element EH is machined for example by a diamond tip, by laser ablation, by lithography, by engraving, by molding, or by pressing.
- the element EH is a diffractive element
- the latter can comprise two or more levels of relief (also called levels).
- the EH element is a metasurface
- the latter is created by modulating the density of the reliefs which are all substantially the same height relative to a planar substrate.
- the EH element in the embodiment where the EH element is a holographic element, the latter can be a thick volume hologram obtained by interference of two coherent light beams producing a variation in the index of refraction in a layer of photosensitive material.
- the EH element is a fine volume hologram in which the index variation is perpendicular to the substrate, or a surface hologram, or a CGH hologram (for computer generated hologram in English) produced by the same process as a diffractive element EH of the invention.
- the holographic or diffractive element or the metasurface EH is deposited or attached to the planar semi-reflecting surface SR.
- This embodiment has better compactness than that of Figure 4.
- it has the disadvantage of being more complex to design and manufacture because a single element must perform a collimation function for the rays R2 and a superposition function for the first image and the second image on the exterior landscape.
- the element EH allows the collimation of the radiation R1 emitted by the microdisplay MA1 and the collimation of the radiation R2 emitted by the micro-display MA2.
- the separation of the R1 radiation collimation and R2 collimation functions is enabled via two distinct variants: the two micro-displays MA1, MA2 emit radiation in the same spectral range but presenting a crossed polarization,
- the first micro-display emits the radiation R1 in a first spectral range and the second micro-display emits the radiation R2 in a second spectral range, separate from the first spectral range.
- Figure 5 is a schematic representation of an embodiment of the telescope 10 in which the optical combination device SC comprises the planar semi-reflecting surface SR, an additional eyepiece OC' and a light guide with expansion of PE pupil.
- planar semi-reflecting surface SR of the embodiment of Figure 5 is identical to that described in the embodiment of Figure 4.
- the additional eyepiece OC' is arranged so as to form an image of the second micro-display at infinity.
- the light guide with pupil expansion PE is arranged on the optical path of the rays coming from the second display and is adapted to extend a pupil of the additional eyepiece OC' in two directions of space while also participating in the superposition of the first and second images on the exterior landscape.
- a light guide with PE pupil expansion is a component known in itself, made of a transparent material and comprising flat and parallel faces.
- the beams of light coming from the second micro-display MA2 and collimated by the additional eyepiece OC' enter for example into the light guide through one of its side faces. Entry into the guide can be done using a prism, but also with a network, which is then called an entry network.
- These beams propagate in the light guide by total reflections on flat and parallel faces. For the observer to perceive an image, it is necessary to bring it out of the guide.
- the PE light guide comprises two parallel semi-reflecting blades arranged at an angle between the parallel faces of the PE light guide, so as to extract a part collimated beams.
- the PE light guide comprises a network of microstructures or micro-prisms or even a diffraction grating which performs the same functions. These elements can be located on one of the two faces of the light guide. They can also be located inside the guide.
- the integration of the light guide with PE pupil expansion makes it possible to greatly reduce the bulk along the x axis of the combiner element of the bezel. Indeed, compared to a separator blade inclined at 45° on the x axis, the PE light guide extends mainly along a plane substantially perpendicular to the x axis. Thus, its length (dimension along the x axis) is reduced to a minimum. The user can thus have a better understanding of their environment.
- the flat semi-reflecting surface SR is replaced by an additional pupil expansion light guide adapted to expand a pupil of the first eyepiece in two directions of space by superimposing the first and second images on the exterior landscape.
- This embodiment has further improved compactness compared to the embodiment of Figure 5.
- FIG. 6 is a schematic representation of an embodiment of the telescope 10 in which the optical combination device SC comprises the planar semi-reflecting surface SR (or the surface SR comprising a dichroic treatment) and a plate SFF comprising two concave “freeform” or aspherical surfaces.
- freeform we mean a surface which has no symmetry of revolution. It is the shape of these surfaces which directly creates the optical power making it possible to return the image from the second micro-display to infinity towards the user's eye. It is necessary to use an SFF blade with two “freeform” surfaces or aspherical so as not to disturb the vision of the exterior landscape through this SFF blade.
- planar semi-reflecting surface SR (or the surface SR comprising a dichroic treatment) of the embodiment of Figure 6 is identical to that described in the embodiment of Figures 4 and 5.
- the concave surface SFF of the “freeform” or aspherical type is inclined on the axis of sight or observation x and is arranged on the optical path of the rays coming from the second display so as to form the image at the infinity of the second MA2 micro-display.
- the SFF concave surface has more degrees of freedom for optimizing the surface profile, thus making it possible to achieve better collimation.
- the riflescope according to the invention can include complementary modular optical systems making it possible to modify the perception of the exterior landscape.
- a magnifying afocal optic downstream of the optical combiner with a magnification of 3 for example.
- an optical module with a light intensifier invariant in magnification and axis deviation can be placed upstream of the optical combination device SC. The user thus perceives both an intensified image and a thermal image of the exterior landscape.
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Telescopes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2214200A FR3144316B1 (fr) | 2022-12-22 | 2022-12-22 | Lunette de visée ou d'observation améliorée |
| PCT/EP2023/086633 WO2024133253A1 (fr) | 2022-12-22 | 2023-12-19 | Lunette de visée ou d'observation améliorée |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4639255A1 true EP4639255A1 (fr) | 2025-10-29 |
Family
ID=87036399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23836421.0A Pending EP4639255A1 (fr) | 2022-12-22 | 2023-12-19 | Lunette de visée ou d'observation améliorée |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4639255A1 (fr) |
| FR (1) | FR3144316B1 (fr) |
| WO (1) | WO2024133253A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998013716A1 (fr) * | 1996-09-27 | 1998-04-02 | Leica Inc. | Systeme d'information optique in situ |
| EP2138885A1 (fr) * | 2008-06-23 | 2009-12-30 | Vectronix AG | Appareil d'observation |
| US9223138B2 (en) * | 2011-12-23 | 2015-12-29 | Microsoft Technology Licensing, Llc | Pixel opacity for augmented reality |
| FR3068776B1 (fr) * | 2017-07-06 | 2020-10-02 | Thales Sa | Lunette de tir a viseur clair et camera thermique |
| EP3877721B1 (fr) * | 2018-11-05 | 2024-01-17 | Vista Outdoor Operations LLC | Système de configuration d'un champ d'affichage de réticule d'un dispositif de visée et dispositif de visée comportant un tel système |
-
2022
- 2022-12-22 FR FR2214200A patent/FR3144316B1/fr active Active
-
2023
- 2023-12-19 WO PCT/EP2023/086633 patent/WO2024133253A1/fr not_active Ceased
- 2023-12-19 EP EP23836421.0A patent/EP4639255A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024133253A1 (fr) | 2024-06-27 |
| FR3144316A1 (fr) | 2024-06-28 |
| FR3144316B1 (fr) | 2025-05-23 |
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