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WO2024256445A1 - Système d'optique d'éclairage - Google Patents

Système d'optique d'éclairage Download PDF

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Publication number
WO2024256445A1
WO2024256445A1 PCT/EP2024/066190 EP2024066190W WO2024256445A1 WO 2024256445 A1 WO2024256445 A1 WO 2024256445A1 EP 2024066190 W EP2024066190 W EP 2024066190W WO 2024256445 A1 WO2024256445 A1 WO 2024256445A1
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WO
WIPO (PCT)
Prior art keywords
illumination
light
sources
illumination optics
illumination sources
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
Application number
PCT/EP2024/066190
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English (en)
Inventor
Andrii Volkov
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.)
Trulife Optics Ltd
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Trulife Optics Ltd
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Filing date
Publication date
Application filed by Trulife Optics Ltd filed Critical Trulife Optics Ltd
Publication of WO2024256445A1 publication Critical patent/WO2024256445A1/fr
Anticipated expiration legal-status Critical
Pending 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
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
    • 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
    • G02B27/0081—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
    • 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
    • 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
    • G02B27/48—Laser speckle optics
    • 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
    • G02B2027/0178—Eyeglass type

Definitions

  • the present disclosure relates to an illumination optics system for a wearable augmented reality display.
  • the present disclosure also relates to a wearable augmented reality display, and in particular such a display comprising an optical combiner and more particularly a diffractive optical combiner.
  • Figure 1 is a generalised view of an augmented reality display to superimpose an image from a projector or image source onto a real-world view at for example the eye of a user.
  • the off- axis optical system 100 of Figure 1 generally comprises: a light source or image source 110 with associated beam shaping optics 120; imaging optics 130; and an optical combiner 140.
  • the combination of the light source 110, beam shaping optics 120 and the imaging optics 130 are termed a projector and when in use provide the image to be viewed at the eye of the user.
  • the function of the optical combiner 140 is to direct light from the projector to a user’s eye while also allowing ambient external environmental light from a real-world view to pass through the optical combiner 140 to the user’s eye such that images from the projector are superimposed on the real-world view.
  • An example of an optical combiner 140 is a holographic optical element (HOE).
  • HOE holographic optical element
  • the HOE directs light from the light source 110 and to a pupil plane of the optical system, which would then be visible by a user’s eye.
  • a spatial light modulator may be provided between the light source 110 and the optical combiner 140 to modulate light from the light source 110 to provide moving images via the optical combiner 140 to the user’s eye.
  • An optical combiner 140 has at least two independent optical axes 150, 160 as shown in Figure 1 , where the first optical axis 150 is that from the projector to the optical combiner 140 and the second optical axis 160 is that from the optical combiner 140 to the user’s eye/pupil plane.
  • Such a system is therefore known as an off-axis optical system.
  • optical combiner 140 of the type described above are known to advantageously provide high transparency, good efficiency, that is, bright images at low light power and be compatible with ophthalmic glasses lens prescriptions and encapsulation into such lenses.
  • a spatial light modulator 112 is typically used as to modulate the light from the light source 110 to create dynamic images.
  • a diffuser is used to create multiple light rays to illuminate individual pixels of the spatial light modulator 112 across the area of the spatial light modulator.
  • the light source is a coherent light source
  • the diffuser produces speckle interference due to the diffuser generating multiple rays at each pixel position on the diffuser. The speckle will then propagate through the system and be visible as an unwanted speckle pattern to the user.
  • optical combiners 140 and in particular diffractive type optical combiners such as holographic optical elements, surface relief gratings and so on, is the wavelength dependence of diffraction. Therefore, for broadband image sources such as LEDs, the image will be diffracted from the optical combiner to different positions for each component wavelength of the image source light. For example, longer wavelengths will be diffracted from the optical combiner at greater angles than shorter wavelengths. This problem is known as dispersion and results in chromatic aberrations in the image diffracted from the optical combiner. Furthermore, off-axis diffractive systems split different wavelength light rays significantly more than on-axis systems due to the wavelength dependence of diffraction. This effect increases as the deviation of the light by the optical combiners 140 from its diffracted direction increases. Therefore, chromatic dispersion is significantly increased for off-axis systems.
  • a known solution to the problem of dispersion is to use a very narrow bandwidth image source.
  • One known such narrow bandwidth image source is a laser diode.
  • Laser diodes are advantageous for wearable augmented reality display applications due to their small size and relatively low power consumption.
  • the narrower the bandwidth of a light source the greater the temporal coherence of the light source, in that if a light source is ideally monochromatic it will ideally have infinite coherence length.
  • One problem with this solution is that where the light source contains two or more such sources (narrow band image sources, such as lasers with a long coherence length) of the same wavelength interference will occur when the narrow bandwidth light sources, such as laser diodes, illuminate a target. For an augmented reality display of the type shown in Figure 1 this interference would propagate through the system to the user eye, where the interference pattern would be visible to the user and degrade the visible image from image source.
  • an illumination optics system for a wearable AR display system and a wearable AR display comprising such an illumination optics system in accordance with the claims.
  • Other preferred and optional features are defined in the other claims and discussed throughout this disclosure.
  • Figure 1 shows a generalised arrangement of a known off-axis optical system comprising illumination optics and an optical combiner
  • Figure 2 illustrates the illumination optics system according to embodiments and an optical combiner for a wearable augmented reality display
  • Figure 3 illustrates the illumination optics system according to embodiments and an optical combiner for a wearable augmented reality display
  • Figure 4 illustrates a wearable AR system in the form of a pair of AR glasses comprising the illumination optics system according to embodiments.
  • Figures 5a and 5b illustrate the concept of eyebox expansion by increasing eye positions.
  • FIG. 2 illustrates the illumination optics 201 according to embodiments.
  • the illumination optics 201 comprises a plurality of illumination sources 202a, 202b, 202c and a spatial light modulator 204.
  • a diffractive optical combiner 206 is also shown illustrating convergence of light rays from the illumination optics 201 to a user’s eye 210.
  • Each of the illumination sources 202a, 202b, 202c is disposed to respectively form corresponding eye positions or images of the illumination sources (also known as exit pupils of the illumination sources) 208a, 208b, 208c which are images of the illumination sources 202a, 202b, 202c visible to the user’s eye 210 when the combiner 206 is positioned within the field of view of the user’s eye.
  • optical combiner is used to direct image light from the illumination sources to the user’s eye 210.
  • the plurality of illumination sources 202a, 202b, 202c may be narrow band light sources.
  • narrow band lights sources have full width half maximum (FWHM) of no greater than approximately 3.0 nm.
  • the FWHM of an illumination source is the output optical spectrum width, that is the width of the optical power spectral density of the light output in terms of wavelength. The FWHM is measured between the points on the optical spectrum where the power has decayed to one half of its peak value.
  • the illumination sources 202a, 202b, 202c may be laser diodes which have a FWHM, AA of between approximately 0.1 nm and 3.0 nm.
  • Such laser diodes may have a coherence length of between approximately 0.20 nm and 1.50 nm. Also, laser diodes are advantageous due to their relatively low power consumption, hight power output (compared to LEDs), which allow for relatively brighter images such that image content can be view in daylight conditions.
  • the illumination sources may be configured to operate in the visible spectrum range of 380 nm to 700 nm.
  • the illumination sources 202a, 202b, 202c operate at the same light output wavelength A.
  • the light output from each of the plurality illumination sources 202a, 202b, 202c are mutually incoherent which reduces the effect of interference between the two or more of the illumination sources 202a, 202b, 202c because light from the illumination sources 202a, 202b, 202c incident on the spatial light modulator 204 will be incoherent at the viewer’s retina.
  • the specific number of illumination sources must be greater than two.
  • adjacent illumination sources 202a, 202b, 202c includes any number of light sources that contribute to the viewers perception of images from those light sources, defined below as the eye-box. Illumination sources which are not visible to the user in the eyebox do not need to incoherent.
  • the illumination sources 202a, 202b, 202c may be single-mode lasers, where a single mode laser is one which provides light output with a bell shaped far field distribution and only one peak.
  • a single mode laser is one which provides light output with a bell shaped far field distribution and only one peak.
  • the light output can be reshaped to better match the shape of the spatial light modulator 204 (for example square top hat profile).
  • the use of multimode lasers will cause multi peak illumination profiles bringing about non-uniformity of the illumination of the spatial light modulator.
  • Multi-mode lasers are also known to produce unwanted patterns or speckle.
  • the spatial light modulator 204 is dynamic controllable device which can modulate the phase and/or amplitude of incident light from the illumination sources 202a, 202b, 202c.
  • the spatial light modulator 204 modulates light emitted by the illumination sources 202a, 202b, 202c to generate image content at the eye positions 208a, 208b, 208c.
  • the spatial light modulator 204 is controlled by a suitable control processor (not illustrated) to generate image content at eye positions 208a, 208b, 208c.
  • the spatial light modulator 204 illustrated is a transmissive type, the skilled person will also appreciate the spatial light modulator 204 may be a reflective type without departing from the scope of the present disclosure. In the case of a reflective type, the illumination sources 202a, 202b, 202c would be provided on the same side of the spatial light modulator 204 as illumination sources 202a, 202b, 202c.
  • the size of the eyebox size is dependent on the number of illumination sources 202a, 202b, 202c used, where more illumination sources creates more eye positions and therefore a larger eyebox, so in this way the skilled person will recognise that the eyebox in the present application is a combination of the each of the eye positions 208a, 208b, 208c providing a range of continuous eye positions over which images from each of the illumination sources is visible. This concept is discussed in more detail below with reference to Figures 5a and 5b.
  • illumination sources 202a, 202b, 202c Whilst the present example shows three illumination sources 202a, 202b, 202c in a 1 D linear array, any number of illumination sources 202a, 202b, 202c may be provided in a linear array. Similarly, illumination sources 202a, 202b, 202c may be provided as a 2D rectangular array, or any appropriate shape dependent on the requirements of the wearable AR display system. Adjacent eye positions 208a, 208b, 208c may be discrete and separated from each other as illustrated or they may adjoin each other. Alternatively, adjacent eye positions 208a, 208b, 208c may overlap.
  • illumination sources 202a, 202b, 202c arranged as a 1 D linear array is that it is possible to incorporate or fold the illumination optics into a small volume such that it can be incorporated into a wearable AR display systems such as AR glasses (discussed below with reference to Figure 4) where space is limited, for example the arms of glasses have a flattened crosssection conformal to the human head.
  • FIG. 3 illustrates illumination optics 301 according to a further embodiment.
  • the illumination optics 301 comprises a plurality of illumination sources 314a, 314b, 314c and a spatial light modulator 304.
  • a diffractive optical combiner 306 is also shown illustrating convergence of light rays from the illumination optics 301 to a user’s eye 310.
  • Each of the illumination sources 314a, 314b, 314c is disposed to respectively form corresponding eye positions (or exit pupils) 308a, 308b, 308c which are images of the illumination sources 314a, 314b, 314c visible to the user’s eye 310, when the optical combiner 306 is positioned within the field of view of the user’s eye.
  • the plurality of illumination sources 314a, 314b, 314c are the outputs of respective light guiding elements 312a, 312b, 312c.
  • the inputs of the light guiding elements 312a, 312b, 312c are optically coupled, by any suitable light guiding elements incoupler (not illustrated) to a common light source 302.
  • the length of each of the light guiding elements 312a, 312b, 312c is different which provides a different optical path length (the distance from the output of the light guiding elements 312a, 312b, 312c to the spatial light modulator) for light from the common light source 302 propagating along each optical fibre to the output of each of the light guiding elements 312a, 312b, 312c.
  • the common light source 302 may be a single mode laser diode.
  • adjacent illumination sources 314a, 314b, 314c includes any number of light sources that contribute to the viewers perception of images from those light sources, defined below as the eye-box. Illumination sources which are not visible to the user in the eyebox do not need to incoherent.
  • the light guiding elements 312a, 312b, 312c may be any single mode structures and may be any suitable refractive index distribution, that is step or graded index.
  • the skilled person will appreciate that the light guiding elements 312a, 312b, 312c any optical waveguide structure, such as an optical fibre, slab waveguide, planar waveguide, strip waveguide, rib waveguide or laser-inscribed waveguide which operates using total internal reflection that guides electromagnetic waves in the optical spectrum will be suitable, provided that the output of each optical waveguide structure is mutually temporally incoherent.
  • the optical waveguide may also be a light pipe or light guide which guides light by classical reflection.
  • the common light source 302 may be a narrow band source.
  • narrow band lights sources have a full width half maximum (FWHM) of no greater than 3.0 nm.
  • the FWHM of a light source is the width output optical spectrum width, that is the width of the optical power spectral density of the light output in terms of wavelength, A.
  • the FWHM is measured between the points on the optical spectrum where the power has decayed to one half of its peak value.
  • the common light source 302 may be a laser diode which has a FWHM, AA of between 0.1 nm and 3.0 nm.
  • laser diodes are advantageous due to their relatively hight power output (compared to LEDs), which allow for relatively brighter images such that image content can be view in daylight conditions. It is not possible to use wide band light sources (that is greater than approximately 3.0 nm), such as LEDs, due to the problem of dispersion effects mentioned above. However high power narrow band LEDs, such as super luminescent diodes (SLEDs) may be used provided that they have a FWHM of no higher than approximately 3.0 nm.
  • the common light source 302 may be configured to operate in the visible spectrum range of 380 nm to 700 nm.
  • the spatial light modulator 304 modulates light emitted by the illumination sources 314a, 314b, 314c to generate image content at the eye positions 308a, 308b, 308c.
  • the spatial light modulator is controlled by a suitable control processor (not illustrated) to generate image content at eye positions 208a, 208b, 208c.
  • a suitable control processor not illustrated
  • the spatial light modulator 304 illustrated is a transmissive type, the skilled person will also appreciate the spatial light modulator 304 may be a reflective type without departing from the scope of the present disclosure. In the case of a reflective type, the illumination sources 314a, 314b, 314c would be provided on the same side of the spatial light modulator 304 as the user’s eye 310.
  • suitable optics in the form of a lens or lenses, may be required to couple light from the illumination optics 201 , 301 to the spatial light modulator 204, 204 and imaging optics are arranged to couple light from the spatial light modulator 204, 304 to the optical combiner 206, 306.
  • imaging optics are arranged to couple light from the spatial light modulator 204, 304 to the optical combiner 206, 306.
  • appropriate aberration control optics may also be included.
  • image light emitted from the illumination sources 202a, 202b, 202c, and 314a, 314b, 314c is incident on the spatial light modulator 204, 304.
  • the image light is modulated by the spatial light modulator and passes through to the optical combiner 206, 306 where it is diffracted to eye positions 208a, 208b, 208c and 308a, 308b, 308c light passing through or reflected by the spatial light modulator 204, 304 is modulated by amplitude, phase or polarisation modulation (or any combination thereof) by applying an appropriate electrical signal to the spatial light modulator 204, 304.
  • Modulation of the image light creates an appropriate display image at the eye positions 208a, 208b, 208c and 308a, 308b, 308c.
  • image light from the common light source 302 is coupled into each of the light guiding elements 312a, 312b, 312c and propagates to the end of the light guiding elements 312a, 312b, 312c which correspond to the illumination sources 314a, 314b, 314c.
  • the distance from the common light source 302 through the light guiding elements 312a, 312b, 312c accounting for refractive index, to the combiner 206 and onto the user’s eye 310, via a single pixel of the spatial light modulator 304 defines an optical path of the light from the illumination sources.
  • the optical path length can be defined so that the light emitted at the illumination sources 314a, 314b, 314c will be incoherent at the user’s eye 310. In other words, an optical path difference is introduced such that the light will be incoherent.
  • an optical path difference may be introduced by introducing a phase shift, for example by providing electro-optic modulation, a piezo-mechanically moving mirror, different refractive indices in each of the light guiding elements or by including an optical element such as a piezoelectric crystal capable of providing an electric-field-induced optical path length change.
  • the optical combiner 206, 306 is arranged to allow external or environmental light to pass through the to the user’s eye 210, 310, while also redirecting the light rays from the illumination sources 202a, 202b, 202c, 314a, 314b, 314c to the user’s eye 210, 310 such that the external light and light ray are both are visible to a user.
  • the optical combiner 206, 306 may include at least one diffractive element such as holographic optical element, volume diffraction grating, surface relief diffraction grating or a reflection grating.
  • the optical combiner may be provided on or in a transparent substrate such as an ophthalmic lens.
  • the spatial light modulator 204, 304 may be of any appropriate type such as Liquid Crystal on Silicon (LCoS which is an example of a reflective type spatial light modulator), Liquid Crystal Display (LCD which is an example of a transmission type spatial light modulator), Digital Light Processor (DLP) or a Digital Micromirror Device (DMD).
  • the spatial light modulator 204, 304 and the common 302 or plurality of illumination sources 202a, 202b, 202c may be controlled by any suitable control processor (not illustrated), the specific details of which are outside the scope of the present disclosure.
  • the common light source 302 or illumination sources 202a, 202b, 202c may provide a single wavelength of light, that is they may provide one of red, green, or blue wavelength light.
  • the common light source 302 or illumination sources 202a, 202b, 202c may be so called tri-colour laser diode modules, which typically consist of red, green and blue (RGB) laser diodes integrated into a single device package.
  • RGB red, green and blue
  • FIG 4 illustrates a wearable augmented reality display 400 comprising at least one of the illumination optics 201 , 301 (not illustrated in Figure 4) described above.
  • This wearable augmented reality display takes the form of a wearable heads-up display, such as for example, a pair of glasses.
  • wearable augmented reality display 400 includes a frame 402.
  • the frame 402 includes arms 404, and lens mounting portions 406 connected by a bridge portion 408.
  • One of the arms 404 includes a mounting portion 410 in which the illumination optics 201 , 301 is fixedly mounted such that the light from the illumination optics 201 , 301 will be incident on an eyeglass lens 412 including an optical combiner 206, 306 as described above.
  • the illumination optics 201 , 301 will be mounted on the arm 404 adjacent the lens mounting portion 406 holding the eyeglass lens 412 and optical combiner 206, 306.
  • the other lens mounting portion may have a standard ophthalmic lens inserted therein.
  • an eyeglass lens including the optical combiner may be mounted in the other lens mounting portion and there may be an additional illumination optics 201 , 301 mounted on a corresponding mounting portion on second arm 404.
  • One or both of the arms 404 may also be adapted to house a battery (not illustrated) to power the illumination optics 201 , 301.
  • one or both of the arms 404 may also include control electronics (not illustrated) for controlling the operation of the illumination optics 201 , 301.
  • an eyebox In the context of wearable AR display systems, and more generally near eye optical devices such as telescopes and binoculars, the concept of an eyebox is the range of eye positions over which an image provided by the device or display can be viewed by the user. This concept is well known in the field of augmented reality displays.
  • the size and shape of the eyebox affect a user’s experience of a wearable AR display system. If the wearable AR display system has a small eyebox that is arranged to be centred on the that user's pupil looking directly ahead, some or all content displayed may not be visible when the user gazes off-centre.
  • the display has a small eyebox and is configured to align the eyebox on a specific user’s pupil, then for a different user the eyebox may be misaligned due to variations in for example, interpupillary distance (IPD) from one user to the next.
  • IPD interpupillary distance
  • AR display systems are generally designed to have a large eyebox so that they are suitable for use by a wide range of users.
  • eyebox expansion can be achieved by increasing the number of eye positions from one eye position 208a in Figure 5a to three eye positions 208a, 208b, 208c in Figure 5b.
  • the eyebox expansion in Figure 5b is in the horizonal direction the skilled person will recognise that the eyebox expansion may be in the vertical direction and/or the horizontal direction.
  • the eyebox expansion is achieved by increasing the number of illumination sources 202a, 202b, 202c or 314a, 314b, 314c of the illumination optics 201 , 301 described above.
  • the size of the eye positions is determined by the size of the exit pupils of the illumination sources 202a, 202b, 202c or 314a, 314b, 314c. It should be noted that whilst the eye positions 208a, 208b, 208c of Figure 5b are shown as spaced apart, they may be adjoined or overlapped, and this will decrease the size of the eyebox in the horizontal and/or vertical dimensions.
  • a further advantage of having multiple illumination sources 202a, 202b, 202c or 314a, 314b, 314c according to embodiments is that there is no need for a diffuser (as discussed in relation to Figure 1 above) because multiple light rays from the multiple illumination sources 202a, 202b, 202c or 314a, 314b illuminate pixels of the spatial light modulator 206, 306 thus reducing speckle.
  • illumination sources 202a, 202b, 202c arranged as a 1 D linear array is that it is possible to incorporate or fold the illumination optics into a small volume.
  • the eyebox as shown in Figure 5b will also be orientated horizontally with respect to the user’s eye.
  • introduction of mirrors allows physical reorientation of the array of illumination sources relative to the spatial light modulator and or optical combiner.

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

Abstract

La présente divulgation concerne un système d'optique d'éclairage pour un système d'affichage AR habitronique, l'optique d'éclairage comprenant : un modulateur spatial de lumière et une pluralité de sources d'éclairage ; les sources d'éclairage étant agencées pour éclairer le modulateur spatial de lumière, le modulateur spatial de lumière étant agencé pour moduler la lumière provenant des sources d'éclairage ; et la lumière provenant de chacune de la pluralité de sources d'éclairage étant mutuellement incohérente. La divulgation concerne également un affichage à réalité augmentée habitronique comprenant le système d'optique d'éclairage.
PCT/EP2024/066190 2023-06-15 2024-06-12 Système d'optique d'éclairage Pending WO2024256445A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2308947.7 2023-06-15
GB2308947.7A GB2630966A (en) 2023-06-15 2023-06-15 Illumination optics system

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Publication Number Publication Date
WO2024256445A1 true WO2024256445A1 (fr) 2024-12-19

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130222384A1 (en) * 2010-11-08 2013-08-29 Seereal Technologies S.A. Display device, in particular a head-mounted display, based on temporal and spatial multiplexing of hologram tiles
US20180335629A1 (en) * 2017-03-21 2018-11-22 Magic Leap, Inc. Methods, devices, and systems for illuminating spatial light modulators
US20210382307A1 (en) * 2019-01-31 2021-12-09 Creal Sa Light-field mixed reality system with correct monocular depth cues to a viewer
WO2022254243A1 (fr) * 2021-06-03 2022-12-08 Creal Sa Projecteur de champ lumineux à faible facteur de forme

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2947920B1 (fr) * 2009-07-10 2011-07-29 Thales Sa Viseur tete haute a combinaison optique assurant la protection contre l'eclairement solaire
US9933684B2 (en) * 2012-11-16 2018-04-03 Rockwell Collins, Inc. Transparent waveguide display providing upper and lower fields of view having a specific light output aperture configuration
US11360308B2 (en) * 2020-01-22 2022-06-14 Facebook Technologies, Llc Optical assembly with holographic optics for folded optical path
WO2023122148A1 (fr) * 2021-12-22 2023-06-29 Meta Platforms Technologies, Llc Dispositif de rétroéclairage à haute performance utilisant des circuits intégrés photoniques

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130222384A1 (en) * 2010-11-08 2013-08-29 Seereal Technologies S.A. Display device, in particular a head-mounted display, based on temporal and spatial multiplexing of hologram tiles
US20180335629A1 (en) * 2017-03-21 2018-11-22 Magic Leap, Inc. Methods, devices, and systems for illuminating spatial light modulators
US20210382307A1 (en) * 2019-01-31 2021-12-09 Creal Sa Light-field mixed reality system with correct monocular depth cues to a viewer
WO2022254243A1 (fr) * 2021-06-03 2022-12-08 Creal Sa Projecteur de champ lumineux à faible facteur de forme

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