101 results about "Near eye display" patented technology

Provided in the embodiments of the present application are an optical engine, a light-guiding device, and a near-eye display device. The optical engine comprises: a micro display component, which is used for emitting image light; and a metasurface element, wherein the micro display component and the metasurface element are attached to each other in a light transmission direction, and the metasurface element is used for modulating the image light and coupling the modulated image light into a light-guiding device.

Provided are a waveguide optical device and a near-eye display apparatus including the same. The waveguide optical device includes a waveguide that propagates light, an input coupler that inputs the light into the waveguide, and an output coupler that outputs the light propagating in the waveguide to the outside, wherein the output coupler includes a plurality of grating regions, which are arranged to be spaced apart from each other.

In some embodiments, a near-eye, near-eye display system comprises a stack of waveguides having pillars in a central, active portion of the waveguides. The active portion may include light outcoupling optical elements configured to outcouple image light from the waveguides towards the eye of a viewer. The pillars extend between and separate neighboring ones of the waveguides. The light outcoupling optical elements may include diffractive optical elements that are formed simultaneously with the pillars, for example, by imprinting or casting. The pillars are disposed on one or more major surfaces of each of the waveguides. The pillars may define a distance between two adjacent waveguides of the stack of waveguides. The pillars may be bonded to adjacent waveguides may be using one or more of the systems, methods, or devices herein. The bonding provides a high level of thermal stability to the waveguide stack, to resist deformation as temperatures change.

A head-mounted, near-eye display system comprises a stack of waveguides having integral spacers separating the waveguides. The waveguides may each include diffractive optical elements that are formed simultaneously with the spacers by imprinting or casting. The spacers are disposed on one or more major surfaces of the waveguides and define a distance between immediately adjacent waveguides. Adjacent waveguides may be bonded using adhesives on the spacers. The spacers may fit within indentations of overlying waveguides. In some cases, the spacers may form one or more walls of material substantially around a perimeter of an associated waveguide. Vent holes may be provided in the walls to allow gas flow into and out from an interior volume defined by the spacers. Debris trapping structures may be provided between two walls of spacers to trap and prevent debris from entering into the interior volume.

Provided is a near-to-eye display device, comprising: a display panel, a light-splitting layer on a light-exit side of the display panel, an imaging lens group on the side of the light-splitting layer away from the display panel, a phase delay layer on the side of the display panel away from the light-splitting layer, a transflective layer on the side of phase delay layer away from display panel. The display panel comprises multiple display units, some of which emit first linearly-polarized light, the others emit second linearly-polarized light; first linearly-polarized light transmits through the light-splitting layer and is imaged on a first focal plane by the imaging lens group, second linearly-polarized light is reflected by the light-splitting layer and transflective layer, is subjected to polarization state transition through the phase delay layer, finally transmits through light-splitting layer and is imaged on a second focal plane by the imaging lens group.

The present application provides an optical module, a near-eye display module and apparatus, and a manufacturing method of a near-eye display module. The optical module includes: a first reflection window configured to reflect light; a second reflection window spaced apart at an opposite end of the first reflection window, where the second reflection window faces the first reflection window and receives light reflected from the first reflection window; an entrance window arranged at the center of the second reflection window and aligned with the first reflection window, the entrance window being configured to allow light to be incident into a space formed by the first reflection window and the second reflection window; and an exit window surrounding the first reflection window, the exit window being arranged opposite to the second reflection window, and the entrance window being configured to mount a micro-display.

The application relates to a near-eye display device and a smart wearable device, the near-eye display device comprising: an optical display module (1), the optical display module comprising a pair of optical lens assemblies (11), each optical lens assembly being provided with a display (12); a driving component (2), the driving component comprising a display driver, and the driving component being connected with the display (12); when the near-eye display device is in operation, the driving component (2) is connected with a remote device (3) to perform signal transmission; and a connecting component for connecting the optical display module (1) to glasses (4). The near-eye display device is suitable for users who wear prescription glasses daily, is convenient to fold and carry, and has high use comfort.

This invention discloses a method for fabricating a high-efficiency Micro-OLED structure, belonging to the field of OLED display technology. Addressing the problems of insufficient brightness, severe large-angle scattering light loss, and bottlenecks in improving light extraction efficiency in existing silicon-based Micro-OLEDs, this invention fabricates a silicon dioxide / silicon nitride bilayer dielectric layer on a CMOS substrate. Utilizing the difference in etching rates between the two layers, a parabolic reflective bowl anode is fabricated. The pixel definition layer, organic light-emitting layer, thin-film encapsulation layer, color filter layer, and planarization layer are then fabricated sequentially. Finally, a microlens array coaxial with the reflective bowl is fabricated, forming a synergistic light-gathering system. This invention can significantly reduce internal light loss in the device, significantly improve peak brightness and light extraction efficiency, is compatible with existing mass production processes, and meets the high-brightness application requirements of AR / VR near-eye displays.

An optical lens assembly for a near-eye display device includes a light box and a diffractive optical element (DOE). The light box has a first layer facing a display screen of the near-eye display device and a second layer facing the DOE. The light box is configured to receive a first light from a display screen of the near-eye display device and transmit at least a portion of the first light to the DOE through a folded optical path, where the first layer and the second layer are flat. The DOE aligned with an optical axis of an eye and is configured to receive a second light from the light box and converge the second light to the eye.

This invention discloses a binocular image merging adjustment system and method for near-eye displays. The system includes: a fixed positioning subsystem for fixing the lens frame of the near-eye display to be adjusted; an optical measurement subsystem for acquiring test images projected by the left and right optical engines of the near-eye display; a stress monitoring module for real-time monitoring of the contact pressure between the optical engines and the lens frame; a precision adjustment mechanism for driving the spatial attitude and position adjustment of the optical engines of the near-eye display; and an image merging control subsystem configured to execute a graded image merging process. Closed-loop control is achieved through pose calculation and precision driving. Based on image feedback from the optical measurement subsystem and pressure feedback from the stress monitoring module, the precision adjustment mechanism is coordinated to ensure stable convergence of image merging parameters, compliance of optical parameters, and mechanical stress not exceeding a preset safety threshold. This invention can construct a closed-loop process, coordinately control optical parameters and mechanical stress, and reduce parameter interference through graded image merging.

This application discloses an image processing method, apparatus, near-eye display device, and storage medium, relating to the field of image processing technology. The image processing method is applied to a near-eye display device, which includes a frame with a variable resistor. The image processing method includes: detecting the resistance change of the variable resistor in real time after the wearer wears the near-eye display device; determining deformation parameters of the frame based on the resistance change, wherein the deformation parameters include the amount and direction of deformation of the frame; and adjusting at least one of the left-eye and right-eye display images in the near-eye display device according to the deformation parameters until the left-eye and right-eye display images overlap. This application can avoid the phenomenon of ghosting in the display image caused by the deformation of the frame in the near-eye display device.

An optical system and a near-eye display device are disclosed. The optical system includes an optical component and a light-transmitting component. The optical component includes a lens structure and a beam-splitting film, a reflective polarizing film, a first phase retardation film, and a first linear polarizing film disposed on the lens structure. The reflective polarizing film and the first phase retardation film are both located between the first linear polarizing film and the beam-splitting film. Image light transmitted through the beam-splitting film is configured to be reflected back between the beam-splitting film and the reflective polarizing film and exit from the reflective polarizing film. The lens structure includes at least one lens. The light-transmitting component is spaced apart from the optical component. At least a portion of the light-transmitting component is located on the side of the first linear polarizing film away from the beam-splitting film. The light-transmitting component is configured to transmit different portions of ambient light to the human eye and the optical component, respectively. The light-transmitting component includes a second linear polarizing film. The absorption axis of the second linear polarizing film is orthogonal to the absorption axis of the first linear polarizing film, enabling user interaction with the environment while preventing external interference light from entering the interior of the optical component.

The present disclosure provides a near-eye display for augmented reality having a polygon-curved optical waveguide holographic coupler and a method of operating the same. In the present disclosure, the near-eye display for augmented reality comprises at least one source and a curved optical waveguide disposed in front of at least one of a user's right eye and left eye, which replicates light from the source by internally reflecting it through at least one of two ends and outputs the replicated light for at least one of the right eye and left eye, and the curved optical waveguide may be a polygon-curved optical waveguide having a plurality of planes disposed at points where the light is totally reflected.

The application provides an optical mechanical module and a near-eye display device; the optical mechanical module comprises, in sequence from an object side to an image side along an optical axis, a first lens group, an X-Cube prism and a second lens group; the first lens group is composed of a first lens, a second lens, a third lens and a fourth lens; the first lens is a plastic aspheric lens with negative focal power; the second lens is a plastic aspheric lens with positive focal power; the third lens is a plastic aspheric lens with negative focal power; the fourth lens is a glass aspheric lens with positive focal power; the second lens group is arranged on one side of the X-Cube prism, and the second lens group comprises a fifth lens and a display chip; the fifth lens is a plastic aspheric lens with negative focal power; the center thicknesses of the first lens, the second lens, the third lens and the fourth lens are T1, T2, T3 and T4 respectively, and 0.6 < (T1+T2) / (T3+T4) < 1 is satisfied.

This application discloses a near-eye display device and a near-eye display apparatus. The device includes an eye-tracking system, an optical display system, and a corrective lens. The eye-tracking system includes a light source module and an image acquisition module. The light source module emits polarized light. The image acquisition module includes a stray light suppression component, which can suppress at least a portion of stray light from entering the image acquisition module. The stray light is polarized light reflected by the corrective lens. The polarization properties of the light transmitted through the stray light suppression component are different from the polarization properties of the stray light reaching the image acquisition module. This avoids stray light formed after the illumination beam is reflected by the corrective lens from entering the image acquisition module, which helps improve image clarity and thus improves the accuracy of eye-tracking calculations.

The utility model discloses a kind of lens module and near-eye display device, lens module has opposite near-eye side and far eye side and including the distance setting coupling-in grating and coupling-out grating, at least partial area between coupling-in grating and coupling-out grating on the surface of the near-eye side of lens module is provided with anti-glare layer, after the lens module is installed to the frame of near-eye display device, the light rays of the surface of the near-eye side incident to the near-eye side can be scattered by anti-glare layer, so that the reflected light rays of the light rays of the surface of the near-eye side reflection to eye reduce, eliminate the reflection light spot and interference image formed by the near-eye side surface of lens, improve the definition that user watches the image coupled out by coupling-out grating, improve the experience that user uses AR glasses.

This application discloses a grating, an optical waveguide, and a near-eye display module. The grating is disposed in the coupling region, coupling region, and / or relay region of the optical waveguide. The grating adopts a metasurface structure, and the metasurface structure is configured such that RGB light rays in a specific wavelength range have the same gradient change on the metasurface structure, and the phase changes generated under the same gradient change are quantitatively related to each other.

A near-eye display module with metasurface structures includes a transparent substrate, a light incouple-outcouple structure and at least a metasurface structure. The light incouple-outcouple structure is located on a first surface of the transparent substrate. The metasurface structure is located on the first surface of the transparent substrate, in which the metasurface structure is configured for focusing or for two-dimensional exit pupil expansion, the metasurface structure comprises a plurality of metaatoms having a columnar structure, and a specific dimension of a cross-section or a diameter of each of the metaatoms change one-by-one along a specific direction of the metasurface structure.

The application provides a virtual image distance measurement method and system, and belongs to the technical field of near-eye display devices.The system comprises a displacement sensing module, which is used to obtain measurement information of the back intercept of a lens; a driving module, which is used to adjust the back intercept of the lens; an image sensing module, which is used to collect a projection image generated by a to-be-measured object under different focusing states of the lens; and a calculation module, which is in signal connection with the displacement sensing module, the driving module and the image sensing module, and is used to determine the virtual image distance of a target projection image according to a pre-constructed virtual image distance measurement model and target measurement information corresponding to the target projection image under a preset focusing state; wherein the virtual image distance measurement model is established according to a preset calibration distance and corresponding measurement information of the back intercept.The application can provide higher measurement accuracy, improve the consistency and repeatability of measurement results, and has strong universality.

An optical waveguide structure includes: a waveguide used to guide image light and including a first surface and a second surface opposite to the first surface; a coupling-out grating on the first surface and used to couple the image light out of the waveguide; and a first light modulation element on the second surface and on light paths of the image light and ambient light, the first light modulation element including a first light-transmitting surface including a first light modulation region and a second light modulation region connected to the first light modulation region, the first light modulation region being used to adjust a focus of the ambient light, and the second light modulation region being used to adjust a focus of the image light; wherein the first light modulation region and the second light modulation region have different curvatures. A near-eye display device is also provided.

Transparent organic light-emitting diodes (OLEDs) can be used as luminescent pixels in near-eye displays for augmented reality applications. Light from these pixels can be switched and / or directed using tunable beam-guiding and focusing elements, also known as tunable microlenses. These tunable microlenses are arranged in an array and paired with the pixel array, for example, by being embedded in a spectacle lens. The tunable microlenses use rapidly switching half-wave plates to selectively focus and / or tilt the light from the pixels. By switching the light from the pixels between resolvable positions / angles at a rate faster than the flicker fusion threshold (e.g., 60 Hz), the tunable microlenses can efficiently double the apparent resolution of the near-eye display. And by switching between focused and unfocused states at the same rate, the tunable microlenses can efficiently overlay virtual images from the pixels onto a real-world image visible through the pixels.

An optical module, a manufacturing method thereof, and a near-eye display device. The optical module has a light incident side and a light-exiting side, and includes a first lens, a partial reflector, a phase retarder, a second lens, a reflective polarizer, and a light-transmissive structure. The reflective polarizer has a reflective axis direction and a transmissive axis direction perpendicular to each other, the light-transmissive structure has a lowest refraction direction, a refractive index of the light-transmissive structure in the lowest refraction direction for linearly polarized light parallel to the lowest refraction direction is lowest, an included angle between the lowest refraction direction and the reflective axis direction is greater than or equal to 70 degrees and less than or equal to 90 degrees, so that the reflective polarizer has a relatively large reflective polarization selectivity ratio.

The application relates to the technical field of virtual reality and artificial intelligence data processing, and discloses a museum ecological system based on a meta-universe joint AI double engine and an implementation method, which comprises an immersive near-eye display terminal, a cloud distributed processing center and a distributed ledger network.The terminal collects multi-source sensing data streams; the processing center separates physiological tremor energy characteristic values through a multi-source biological signal analysis module and synthesizes a comprehensive stress index, generates rendering pipeline intervention instructions according to the comprehensive stress index by using a nonlinear semantic reconstruction module, calculates an effective collision radius by using a physical simulation and rendering engine to comprehensively equip attribute metadata, the comprehensive stress index and the physiological tremor energy characteristic values, and generates a drill evaluation report; and the distributed ledger network encrypts and stores the report.The application realizes self-adaptive adjustment of virtual environment visual rendering and physical interaction difficulty according to the physiological and psychological state of a user, and solves the problems of lack of real-time physiological response and low data reliability in the existing drill system.

The application discloses a kind of micro-pixel group and micro-lens array near-eye display lens, belong to augmented reality and near-eye display technical field.The near-eye display lens includes: optical lens, micro-pixel group array arranged thereon, micro-lens array, and substrate thin layer material, transparent optical adhesive layer, protective layer;Micro-pixel group contains micro-nano pixel, micro-nano pixel is composed of micro-nano pixel element, and micro-nano pixel element is micron / nanometer order independent driving monochromatic light emitting unit, integrates micro-nano light emitting, driving and other devices and functional layer;Micro-lens covers one or more micro-pixel groups and is arranged close to one side of human eye, realizes light collimation focusing and deflection into eye.The application discards traditional complex relay optical system, directly integrates display and optical control unit in optical lens, can realize digital image display, real scene direct vision and accurate fusion of virtual and real image, with high transparency, high optical efficiency, large field angle characteristics, lens can realize light and thin design, and wearing comfort is high.

This application provides a binocular diffractive waveguide, comprising: a monolithic waveguide substrate, the monolithic waveguide substrate having a left-eye optical path region and a right-eye optical path region, the left-eye optical path region including a left-eye coupling region and a left-eye coupling region, and the right-eye optical path region including a right-eye coupling region and a right-eye coupling region; both the left-eye coupling region and the right-eye coupling region are located close to the centerline of the monolithic waveguide substrate; the waveguide outer contour design of the right-eye optical path region is such that: after image light is diffracted by the grating structure in the left-eye coupling region, the non-working order of light rays heading towards the right-eye optical path region does not enter the right-eye optical path region; and the waveguide outer contour design of the left-eye optical path region is such that: after image light is diffracted by the grating structure in the right-eye coupling region, the non-working order of light rays heading towards the left-eye optical path region does not enter the left-eye optical path region. This application can achieve true 3D display, while being compact in structure and comfortable to wear, suppressing binocular crosstalk.

A miniature light engine and electronic device are disclosed. The miniature light engine includes a lens assembly (10) and at least one miniature display panel (20). The lens assembly (10) includes a lens housing (101) and a first light guide channel (103) disposed in the lens housing (101). The first light guide channel (103) includes a projection end (102). The miniature display panel (20) includes a light-emitting chip (203). The lens housing (101) is connected to the miniature display panel (20) on at least one of the opposite side and adjacent side of the projection end (102). Light emitted by the light-emitting chip (203) enters the first light guide channel (103) and propagates through the projection end (102). This enables the miniature display device to achieve small size, high imaging quality, and portability in near-eye display devices and micro-projectors.

The application relates to the projection technical field and provides a calibration method, device and equipment of a projection light machine and a storage medium, which are applied to a near-eye display device, the near-eye display device comprises a projection light machine and an optical waveguide, the calibration method comprises the following steps: controlling the projection light machine of the near-eye display device to project a preset calibration image on the optical waveguide of the near-eye display device; the preset calibration image comprises a target virtual calibration object; obtaining a target calibration image obtained by a camera shooting the optical waveguide; the target calibration image comprises the preset calibration image projected on the optical waveguide; the camera has a connection relationship with the near-eye display device; determining light machine parameters of the projection light machine according to target calibration images corresponding to a plurality of preset calibration images; the shapes of the target virtual calibration objects in the plurality of preset calibration images are the same, and the rotation angles of the target virtual calibration objects are different, so that the calibration convenience of the projection light machine is improved.

This specification provides an embodiment of a near-eye display device and its calibration method, apparatus, and storage medium. The near-eye display device includes two display modules corresponding one-to-one with a user's two eyes. The method includes: obtaining strabismus data and fusion range corresponding to the first eye of the target user through an interactive visual test while the near-eye display device is being worn by a target user; determining a personalized visual comfort zone corresponding to the first eye based on the fusion range and according to a preset visual comfort rule; and adjusting the module configuration parameters of the near-eye display device based on the strabismus data and the personalized visual comfort zone so that the perceived eye position of the first eye falls within the personalized visual comfort zone.

The application discloses a near-eye display system design method based on a free-form geometric phase optical element. The method comprises the following steps: firstly, calculating an initial phase function of the free-form geometric phase optical element; secondly, preliminarily designing a near-eye display system and an exposure system of the free-form geometric phase optical element according to the phase function; thirdly, jointly optimizing the near-eye display system, the exposure system and a Bragg period of the free-form geometric phase optical element to obtain the near-eye display system and the exposure system with good image quality and high diffraction efficiency; fourthly, exposing and preparing the free-form geometric phase optical element by using the exposure system according to the joint optimization result; and finally, assembling the near-eye display system based on the free-form geometric phase optical element. The near-eye display system based on the free-form geometric phase optical element designed according to the method proves that the method can preferably complete the design of the near-eye display system based on the free-form geometric phase optical element, and the method is simple, fast and the designed system has excellent performance.

The application discloses a chiral nematic liquid crystal grating based on an asymmetric orientation template and a preparation method, relates to the field of liquid crystal diffraction optical devices and near-eye display (XR / AR) optical waveguide coupling grating manufacturing technology. The preparation method comprises the following steps: step S10: providing a first substrate and a second substrate and preparing an orientation layer; step S20: forming an asymmetric grating orientation template; step S30: assembling a liquid crystal box; step S40: filling a reactive mesogen mixture; step S50: inducing by temperature reduction and curing under ultraviolet light to form a stable chiral nematic liquid crystal grating. The application adopts an asymmetric orientation template, avoids the high-precision registration requirement of double-sided patterning orientation on period and phase and the risk of orientation disorder, effectively suppresses defects such as dislocation and domain boundary, improves the structural integrity of the grating and the stability of the diffraction efficiency, and simultaneously reduces the equipment and process requirements, improves the yield and consistency in mass production.