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WO2024133304A1 - Dispositif de génération et d'affichage d'une image dans un champ d'observation en utilisant un multiplicateur de pupille - Google Patents

Dispositif de génération et d'affichage d'une image dans un champ d'observation en utilisant un multiplicateur de pupille Download PDF

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Publication number
WO2024133304A1
WO2024133304A1 PCT/EP2023/086703 EP2023086703W WO2024133304A1 WO 2024133304 A1 WO2024133304 A1 WO 2024133304A1 EP 2023086703 W EP2023086703 W EP 2023086703W WO 2024133304 A1 WO2024133304 A1 WO 2024133304A1
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WO
WIPO (PCT)
Prior art keywords
light beam
encapsulation
microscanner
waveguide
partial light
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.)
Ceased
Application number
PCT/EP2023/086703
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German (de)
English (en)
Inventor
Stefan Franz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oqmented GmbH
Original Assignee
Oqmented GmbH
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Filing date
Publication date
Application filed by Oqmented GmbH filed Critical Oqmented GmbH
Publication of WO2024133304A1 publication Critical patent/WO2024133304A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B27/0172—Head mounted characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
    • G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
    • 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
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
    • G02B2027/0125—Field-of-view increase by wavefront division
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/10—Scanning systems
    • G02B26/101—Scanning systems with both horizontal and vertical deflecting means, e.g. raster or XY scanners
    • 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
    • G02B27/0081—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for altering, e.g. enlarging, the entrance or exit pupil

Definitions

  • the invention relates to a projection device for generating and displaying images on an observation field intended for projecting augmented reality, which can in particular be a spectacle lens or a retina of a user of augmented reality glasses.
  • Augmented reality refers to the computer-aided extension of the perception of reality that addresses at least one of the human sensory modalities.
  • AR is often understood to mean only the visual representation of information, namely the addition of computer-generated additional information and/or virtual objects to images or videos by means of overlay or superimposition.
  • the visual representation or projection of images, user interfaces or information, such as directions, weather information or news is a common application of AR and is increasingly being used in so-called AR glasses, which can display images, user interfaces or information directly on the lenses or retina of a user.
  • a microscanner also known as a micro-electro-mechanical system, MEMS for short
  • MEMS micro-electro-mechanical system
  • a beam of light which is generated by a light source arranged in the temple of a pair of glasses, for example, and then shaped, is deflected onto the MEMS scanner.
  • the MEMS scanner can then scan the beam of light, creating an image on an observation field.
  • Such an imaging system with a MEMS scanner requires comparatively few optical elements, which means that small and inexpensive projectors can be realized.
  • a projector must achieve very good optical resolution and consume very little power. Due to a lack of alternatives, edge emitters are therefore often used as the light source. However, these emit a highly divergent, elliptically shaped beam of light that must be collimated.
  • a MEMS scanner is described, for example, in DE 10 2021 1 16 151 B3.
  • the MEMS scanner disclosed there can simultaneously perform rotary oscillations around two resonant oscillation axes in order to Oscillations of a light beam incident on a deflection element cause a nonlinear Lissajous projection into an observation field.
  • the oscillations scan a field of view (FOV) at high frequencies in a scan pattern that resembles a Lissajous figure.
  • FOV field of view
  • hundreds of partial images can be processed simultaneously and a smoother representation of motion is possible.
  • artifacts in the three-dimensional perception of fast-moving objects are greatly reduced.
  • the size of the so-called exit pupil is a key factor for the user experience.
  • the exit pupil is the area in front of a near-eye display in which projected image content can be correctly perceived by the pupil. Outside the exit pupil, image content can be distorted, colors can be incorrect or mirrored, or image content is not visible at all.
  • the practical minimum size of the exit pupil is the size of the pupil of the human eye, usually about 3-5 mm.
  • the size of the exit pupil must be increased by at least a few millimeters in each direction.
  • the pupil distance varies from person to person, which can be compensated for in binoculars or eyepieces, for example, by mechanical adjustments.
  • moving mechanical parts are not desired in AR glasses due to their high susceptibility to mechanical influences and the associated wear and tear and the required installation space, which is why mechanical adjustment is not an option here.
  • the exit pupil must therefore be increased to at least 1 cm, ideally even to several centimeters.
  • a display for a near-eye display of images is disclosed by WO 2021/122948 A1.
  • the display comprises a light source for emitting light in the direction of a waveguide, the waveguide and a first optical element which is arranged on the waveguide and is configured to receive light and couple it into the waveguide.
  • Laser beam scanning (LBS) can be used to display the images.
  • US 2016/0377866 A1 discloses a portable heads-up display comprising a scanning laser projector, a holographic combiner and an optical splitter arranged in the optical path therebetween.
  • the optical splitter receives the light signals generated by the scanning laser projector and separates the light signals into a plurality of sub-areas based on the point of incidence of each light signal at the optical splitter.
  • the optical splitter redirects the light signals corresponding to the respective plurality of sub-areas to the holographic combiner.
  • the holographic combiner converges the light signals and directs them to the respective spatially separated instances of the exit pupil at the user's eye. In this way, a plurality of instances of the exit pupil are distributed over the area of the eye and the exit pupil is dilated.
  • An optical system for a virtual retinal display and a method for projecting image content onto a retina is known from DE 10 2021 200 893 A1.
  • the optical system comprises an image source that provides an image content, an image processing device, a projector unit with a light source for generating a light beam with a controllable deflection device for the at least one light beam for scanning projection of the image content, and a deflection unit onto which the image content can be projected and which is configured to direct the projected image content onto an eye of a user.
  • the optical system further comprises an optical segmentation element, with the aid of which the image content can be projected onto at least one projection area of the deflection unit via different imaging paths, and an optical replication component, which is arranged in the at least one projection area of the deflection unit and is designed to replicate the projected image content and to direct it spatially offset onto the eye of the user, so that a plurality of exit pupils arranged spatially offset from one another are generated with the image content.
  • the light coming from the microscanner is always sent to a waveguide and split in front of or on the waveguide to form a plurality of to create exit pupils that are spatially offset from one another.
  • the problem that such a free beam area has to be guided past the head of a user which means that many compromises are necessary in the design of such AR glasses.
  • a lot of installation space is required for projection systems and beam-forming optics and the beam paths covered are relatively long.
  • the invention is based on the object of finding a new possibility for image generation and image display on an observation field for AR information projection, which requires few optical elements and little installation space and at the same time has a large exit pupil.
  • a device for generating and displaying images in an observation field intended for displaying information and images comprising at least one light source for emitting at least one light beam, a microscanner for variable deflection of the at least one light beam, wherein the microscanner has at least one axis of rotation for a rotary oscillating movement for deflecting the at least one light beam and an encapsulation that hermetically seals the microscanner, and a pupil multiplier that is formed by amplitude splitter surfaces on which the light beam is reflected at least partially several times, or by diffractive structures on which the light beam is diffracted, and that is mounted in or on the encapsulation of the microscanner in such a way that the at least one light beam deflected by the microscanner is divided into a first partial light beam and at least one second partial light beam, wherein the first partial light beam and the at least one second partial light beam are directed into different adjacent areas of the observation field and have intensities that are adapted to one
  • the encapsulation of the microscanner is generally intended to protect the moving mechanical and optical components of the microscanner and is indispensable to protect it from external influences and contamination.
  • the invention allows the encapsulation to be given additional functionality to further increase the stability and compactness of AR image generation and display.
  • the pupil multiplier ensures that the size of the exit pupil of the device for generating and displaying images or the projection device remains the same, while the compactness of the projection device is improved. Alternatively, the exit pupil can be enlarged while maintaining the same compactness.
  • the pupil multiplier is a beam splitter or an arrangement of beam splitters by which the light beam is divided into several partial light beams, preferably running parallel to one another, or it is formed by diffractive structures at which the light beam is diffracted.
  • the diffractive structures can also be designed as holographic optical elements.
  • the generation and display of images is to be understood in the sense of the invention as the generation and display of one image, several images or a sequence of images.
  • user interfaces or information such as directions, weather information or news can also be displayed on the observation field.
  • the observation field is advantageously at least one optically effective surface, for example at least one beam splitter or a holographic optical element (HOLOGRAPHIC OPTICAL ELEMENT, HOE for short), which is applied in a lens of AR glasses or on a windshield of a motor vehicle.
  • the observation field can be the retina of at least one eye of a user.
  • the device advantageously comprises at least one waveguide which is flat and has outer surfaces running parallel to one another.
  • At least one waveguide can be formed by the parallel outer surfaces of the encapsulation.
  • the waveguide is essentially plate-shaped and consists of a material through which the light beam emitted by the light source can propagate.
  • the waveguide can be parallel-surface.
  • the at least one light beam preferably propagates by total resection on the outer surfaces of the waveguide. To do this, the light beam must be coupled into the waveguide at an angle that is greater than an angle of total reflection. The angle of total reflection depends on the material from which the waveguide is made.
  • the at least one waveguide can consist of several layers or of just one layer.
  • the waveguide is preferably a plate made of glass or transparent optical plastic.
  • the waveguide is particularly preferably a lens of AR glasses or the windshield of a motor vehicle.
  • At least one cover glass can also be applied to the waveguide to protect the outside of the waveguide from external influences.
  • a cover glass is particularly preferably applied to both outside sides of the waveguide.
  • a collimation element is preferably inserted in front of the microscanner in the beam path of the light beam.
  • An optical element for correcting aberrations and/or for beam shaping can also be inserted in the beam path of the light beam.
  • the collimation element is particularly preferably designed to correct aberrations and for beam shaping at the same time. In this way, only very few optical elements are required in the beam path of the light beam to collimate, correct and shape it.
  • a coupling element is arranged between the microscanner and the waveguide, through which the at least one light beam can be coupled into the waveguide.
  • the coupling element is therefore designed to couple the light beam coming from the microscanner into the waveguide.
  • the coupling element can reduce or avoid image errors and deflections of the light beam that occur on an entry surface of the waveguide.
  • At least one coupling element can also be attached, at which the at least one partial light beam can be coupled out of the waveguide.
  • the coupling element or the coupling elements can, for example, have the same refractive index as the waveguide and a plane running perpendicular to the light beam.
  • the splitter surfaces can be formed by a first outer surface of the encapsulation that reflects the at least one light beam and a second outer surface of the encapsulation that is partially transparent and reflective for the at least one light beam.
  • a reflectivity of the second outer surface can decrease in the direction in which the at least two partial light beams propagate along the encapsulation.
  • the reflectivity of the second outer surface decreases in the direction in which the at least one light beam propagates along the encapsulation so that all Partial light beams have essentially the same intensity. In this case, no additional splitter surfaces are necessary. However, with such an arrangement it is not possible to split the light beam along several directions without introducing additional optical elements.
  • further splitter surfaces can be introduced into the encapsulation.
  • a reflectivity or splitting ratio of the further splitter surfaces can decrease in the direction in which the at least one light beam propagates along the encapsulation.
  • the reflectivity of the further splitter surfaces decreases in the direction in which the at least one light beam propagates along the encapsulation such that all partial light beams have essentially the same intensity.
  • first and/or the second outer surface of the encapsulation can also act as a splitter surface and/or additional splitter surfaces can be introduced into the waveguide in order to split the light beam along more than one direction with as few optical elements as possible.
  • a further pupil multiplier is fitted in or on the waveguide so that the first partial light beam and the at least one second partial light beam are split even further.
  • the further pupil multiplier can be designed in a similar way to the pupil multiplier.
  • the outer surfaces of the waveguide can be dividing surfaces of the further pupil multiplier.
  • the microscanner can be designed in particular as a micro-electro-mechanical system (MEMS) and can be configured to cause a non-linear Lissajous projection in the observation field.
  • MEMS micro-electro-mechanical system
  • the microscanner is designed to scan the light beam across the observation field, thereby generating an image on the observation field.
  • By scanning the at least one light beam along a Lissajous figure hundreds of partial images can be processed simultaneously and a smoother representation of movement is made possible.
  • artifacts in the three-dimensional perception of fast-moving objects by the user are greatly reduced.
  • the microscanner is designed for rotary oscillation movements around exactly two axes of rotation that are orthogonal to one another and oscillates at its natural frequency around the two axes of rotation.
  • the microscanner can also be designed for rotary oscillation movements around only one axis of rotation, in which case the light source is designed to emit several light beams arranged next to one another in a line-like manner.
  • the at least one light source is a laser diode that is designed as an edge emitter, surface emitter or a fiber-coupled laser light source.
  • Surface emitters and fiber-coupled light sources have the advantage that the light beams emitted by these light sources are generally less divergent than the light beams emitted by edge emitters.
  • the acquisition costs of surface emitters and fiber-coupled light sources are generally significantly higher than those of edge emitters.
  • the at least one light source can be designed to emit a plurality of light beams with pairwise different spectral compositions.
  • the at least one light source can be supplemented by further similar light sources so that a plurality of light beams with the same spectral composition are emitted.
  • the distance between the light beams emitted by the light source or light sources can preferably be adjusted using an additional optical element.
  • a light source that emits a plurality of light beams or a plurality of light sources is particularly useful if the microscanner is designed to be rotatable about only one axis of rotation, since an image in two dimensions can then be generated by simultaneously controlling the line light source and the microscanner.
  • augmented reality glasses containing a device for generating and displaying images according to one of the described embodiments.
  • FIG. 1 A side view of a first embodiment of a device for generating and displaying images in an observation field
  • Fig. 2 is a view of a second embodiment of the device for generating and displaying images in the observation field
  • Fig. 3 is a view of a third embodiment of the device for generating and displaying images in the observation field
  • Fig. 4A is a first view of a fourth embodiment of the device for generating and displaying images in the observation field
  • Fig. 4B is a second view of a fourth embodiment of the device for generating and displaying images in the observation field
  • Fig. 5 is a view of a fifth embodiment of the device for generating and displaying images in the observation field
  • Fig. 6 is a side view of a sixth embodiment of the device for generating and displaying images in the observation field with a further waveguide.
  • Fig. 1 shows a first embodiment of a device for generating and displaying images in an observation field 10.
  • the first embodiment comprises a light source 1 for emitting at least one light beam 3 in the direction of a microscanner 4.
  • the light source 1 is designed as a strongly divergent laser diode, for example in the form of an edge emitter, and is arranged above a microscanner 4.
  • the light beam 3 After emerging from the light source 1, the light beam 3 strikes a collimation element 2 which is designed to collimate the divergent light beam 3 or at least partially collimate and shape it.
  • the microscanner 4 is designed for variable deflection of the light beam 3 and has at least one axis of rotation for a rotary oscillating movement for deflecting the light beam 3. It is preferably designed as a micro-electro-mechanical system and is designed to cause a non-linear Lissajous projection in the observation field 10.
  • the microscanner 4 has an encapsulation 5, which is generally for protection against external influences and contamination.
  • the encapsulation 5 is flat and has outer surfaces that run parallel to one another.
  • the light beam 3 collimated after the collimation element 2 then strikes the encapsulation 5, through which it is transmitted, and the microscanner 4, wherein the microscanner 4 has a scanning mirror which is enclosed by an encapsulation 5.
  • the light beam 3 is deflected at the scanning mirror of the microscanner 4.
  • the scanning mirror has a scanning area within which the light beam 3 can be deflected.
  • the scanning area can comprise the entire half-space above the scanning mirror in order to project an image representation in the observation field 10.
  • the observation field 10 is only shown schematically in Fig. 1 and in the following figures.
  • the device for generating and displaying images in an observation field 10 is also referred to below as a projection device.
  • the projection device further comprises a pupil multiplier 6 (not specifically shown in Fig. 1), which is introduced into the encapsulation 5.
  • the pupil multiplier 6 splits the light beam 3 into several, here for example three, partial light beams 3i-3s along a plane, wherein the partial light beams 3i-3i are directed into different areas of the observation field 10 and have essentially the same intensities and beam shapes. Even if only three partial light beams 3i to 33 are shown in Fig. 1, the number of partial light beams 3i into which the light beam 3 is divided by the pupil multiplier 6 can be chosen arbitrarily.
  • the number of partial light beams 3i is preferably between two and one hundred.
  • the number of partial light beams 3i depends in particular on the size of an exit pupil into which the projection device is to project images.
  • Fig. 2 shows a second embodiment of the projection device in which a fiber-coupled light source 1 supplies a divergent light beam 3 which is collimated by the collimation element 2.
  • the pupil multiplier 6 is formed by splitter surfaces 7, specifically by a first outer surface 7i of the encapsulation 5 which reflects the light beam 3 and a second outer surface 72 of the encapsulation 5 which is partially transparent and reflective for the light beam 3.
  • the partial light beams 3i and 32 run parallel to one another in Fig. 2, as in Fig. 1, and the light beam 3 is split in only one direction.
  • the projection device is formed by a layer structure, whereby the individual layers can be applied to a wafer. In Fig. 2, such a wafer is shown as the bottom layer. On A layer containing the microscanner 4 is applied to the wafer, and the encapsulation 5 is applied on top of this. The encapsulation 5 is transparent to the light beam 3 coming from the light source 1.
  • Fig. 3 shows a third embodiment of the projection device.
  • the light beam 3 incident on the encapsulation 5 is, after it has been deflected by the microscanner 4, deflected in a propagation direction by an inclined outer surface 73 and simultaneously split into four partial light beams 3i.
  • the first outer surface 7i of the encapsulation 5, which reflects the light beam 3 and the second outer surface 72 of the encapsulation 5, which is partially transparent and reflective for the light beam 3, are also part of the pupil multiplier 6.
  • the partial light beams 3i are further split into a total of eight secondary partial light beams 3s-3i2 by the first outer surface 7i and the second outer surface 72. After leaving the encapsulation 5, the secondary partial light beams 3s-3s propagate through the exit surface or the second outer surface 72 of the encapsulation 5 in the direction of the observation field 10, not shown here.
  • the encapsulation 5 hermetically seals the microscanner 4, as in the first two embodiments, in order to protect it from external influences and contamination, and at the same time provides the splitter surfaces 7 used as amplitude splitters for the pupil multiplier 6.
  • Fig. 4A and Fig. 4B each show variants of a fourth embodiment of the projection device.
  • the splitter surfaces 7 are introduced into the encapsulation 5 and the reflectivity of the individual splitter surfaces 74 and 7s lying parallel one behind the other decreases along the beam path of the light beam 3 in the encapsulation 5.
  • Fig. 4A the beam path of the light beam 3 is only shown up to the microscanner 4 (not shown) and the beam path of all partial light beams 3i only after exiting the encapsulation 5 in order to make the splitter surfaces 7 introduced into the encapsulation 5 more clearly visible.
  • the light beam 3 falls on the microscanner 4 and is deflected by it in the direction of a reflective surface 11.
  • the reflective surface 11 is introduced into the encapsulation 5 in order to deflect the light beam 3 in the direction of the pupil multiplier 6, which is formed from a total of six splitter surfaces 7.
  • the three first splitter surfaces 74 divide the light beam 3 into three Partial light beams 3i (not shown) and deflect the three primary partial light beams 3i in the direction of the three second splitter surfaces 7s.
  • the second splitter surfaces 7s divide the three primary partial light beams 3i into nine secondary partial light beams 3s-3i3 and deflect them in the direction of the observation field 10, creating an array of three times three secondary partial light beams 3s-3i3.
  • the nine secondary partial light beams 3s-3i3 have an intensity that is adapted to one another and the same beam shape.
  • the beam path of the light beam 3 is shown in Fig. 4B only up to the reflective surface 11.
  • the light beam 3 hits the scanning mirror of the microscanner 4 (not shown), it is deflected by the reflective surface 11 in the direction of the three first splitter surfaces 74, split there into three primary partial light beams 3i (not shown) and deflected in the direction of the second splitter surfaces 7s and then split three times again at the second splitter surfaces 7s and - as in Fig. 4A as nine secondary partial light beams 3s-3i3 - coupled out upwards (not shown in Fig. 4B).
  • Fig. 5 shows a fifth embodiment of the device for generating and displaying images in the observation field 10 (not shown).
  • the light source 1 is also not shown, only the already collimated and formed light beam 3.
  • the light beam 3 strikes the encapsulation 5 and is transmitted through the encapsulation 5 to the microscanner 4.
  • the light beam 3 is deflected or scanned by the microscanner 4 and strikes a first diffractive structure 12, where it is split into nine primary partial light beams 3I-39.
  • the nine primary partial light beams 3I-39 then strike a second diffractive structure 13, which, like the first diffractive structure 12, is introduced into the encapsulation 5, and are each split into nine secondary partial light beams 3io-3go.
  • the 81 secondary partial light beams 3 -9o then leave the encapsulation 5 in the direction of the observation field 10.
  • the diffractive structures 12 and 13 can be, for example, flat gratings or three-dimensional holographic elements.
  • the light source 1 is a fiber-coupled light source.
  • the divergent light beam 3 enters a waveguide 14 arranged between the light source 1 and the microscanner 4 and is collimated by a collimation element 2 arranged in the waveguide 14.
  • the collimated light beam 3 is transmitted through the encapsulation 5 and strikes the microscanner 4.
  • the encapsulation 5 is designed as a semicircular dome above the microscanner 4.
  • the light beam 3 is deflected by the microscanner 4 and hits the encapsulation 5 again.
  • the encapsulation 5 contains a pupil multiplier 6 (not shown) and divides the light beam 3 into four primary partial light beams 3I-34 when it hits it for the second time perpendicular to the plane of the drawing.
  • the pupil multiplier 6 is only arranged in the area of the encapsulation 5 into which the light beam 3 is deflected by the microscanner 4.
  • the four primary partial light beams 3I-34 are coupled into the waveguide 14 by a coupling element 8 and reflected by total reflection on an outside of the waveguide 14.
  • the four primary partial light beams 3I-34 are divided into sixteen secondary partial light beams 3s-320, which are coupled out of the waveguide 14 in the direction of the observation field 1 by an output coupling element 9 perpendicular to the other outer surface of the waveguide 14.
  • the input coupling element 8 and the output coupling element 9 can be designed, for example, as an echelle grating or a blaze grating (slanted edge grating).

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

L'invention concerne un dispositif pour générer et afficher des images dans un champ d'observation (10) prévu pour superposer des informations et des images, comprenant au moins une source de lumière (1) pour délivrer au moins un faisceau lumineux (3), un microscanner (4) pour dévier de manière variable ledit faisceau lumineux (3), le microscanner (4) ayant au moins un axe de rotation pour un mouvement oscillant de rotation pour dévier ledit faisceau lumineux (3), ainsi qu'une encapsulation (5) qui scelle hermétiquement le microscanner (4), et un multiplicateur de pupille (6) qui est formé par des surfaces de diviseur d'amplitude (7) sur lesquelles le faisceau lumineux (3) est au moins proportionnellement réfléchi de multiples fois, ou par des structures diffractives (12, 13) sur lesquelles le faisceau lumineux (3) est dévié, et qui est fixé dans ou sur l'encapsulation (5) de telle sorte que ledit faisceau lumineux dévié par le microscanner (4) est divisé en un premier faisceau lumineux partiel (31) et au moins un second faisceau lumineux partiel (32), le premier faisceau lumineux partiel (31) et ledit second faisceau lumineux partiel (32) étant dirigés dans différentes régions voisines du champ d'observation (10) et ayant des intensités qui sont coordonnées les unes avec les autres.
PCT/EP2023/086703 2022-12-21 2023-12-19 Dispositif de génération et d'affichage d'une image dans un champ d'observation en utilisant un multiplicateur de pupille Ceased WO2024133304A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022134421.5 2022-12-21
DE102022134421.5A DE102022134421A1 (de) 2022-12-21 2022-12-21 Vorrichtung zur Erzeugung und Darstellung eines Bildes auf einem Beobachtungsfeld unter Verwendung eines Pupillenvervielfachers und Augmented-Reality-Brille

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WO2024133304A1 true WO2024133304A1 (fr) 2024-06-27

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DE102024101152B4 (de) * 2024-01-16 2025-08-21 OQmented GmbH Projektionsvorrichtung zur Multifeldprojektion von Bildern oder Informationen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160377866A1 (en) 2015-02-17 2016-12-29 Thalmic Labs Inc. Systems, devices, and methods for eyebox expansion in wearable heads-up displays
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