1398 results about "Near eye display" patented technology

A computer-implemented system and method for pupil-directed retinal projection in near-eye displays are disclosed. The computer-implemented system provides smart glasses with directed physical pixels that project light beams / signals directly onto a user's retina based on pupil position and size. The glasses comprise a frame, lenses with directed pixel layers, and sensors for tracking pupil movement. Each directed pixel may generate multiple virtual pixels by rapidly changing its emission angle. The glasses function as prescription lenses, virtual reality displays, and augmented reality devices without traditional optical systems. Additional features include depth sensors, cameras, and connectivity to peripheral devices. The glasses enable a seamless blend of virtual and real-world experiences, creating an immersive “Mixverse” environment. Various input methods, including gesture recognition and brain-computer interfaces, allow for intuitive control and interaction.

Apparatus, including a retaining structure (54), positioned near a subject's eye that has a pupil with a diameter, an optical combiner (52A) mounted on the structure before the eye, and a pixelated screen (60A) having an array of variably transparent pixels coating the combiner. There is an image capturing device (68A) mounted on the structure to capture an image of a scene viewed by the eye, and a projector (64A) is mounted on the structure to project at least one of a portion of the captured image and a stored image onto a section of the screen at a selected location thereof. A processor (26) renders the screen section at least partially opaque, selects the section location in response to a region of interest in the scene identified by analysis of the captured image, and determines a dimension of the section in response to the pupil diameter.

An augmented reality, AR, system (100) for use in a medical procedure is disclosed. The AR system (100) comprises an AR headset (2), and a processor (12). The AR headset (2) comprises a camera (6a, 6b), a near eye display (4a, 4b) and a depth sensor (10a, 10b). The processor (12) is configured to adjust the position of the image obtained by the camera (6a, 6b) on the display (4a, 4b) throughout the medical procedure based on changes in the distance measured by the depth sensor (10a, 10b).

The disclosure provides smart swimming goggles, including a swimming goggle eyecup, a housing attached to the swimming goggle eyecup and internally provided with a closed cavity, and a near-eye display system arranged in the closed cavity of the housing; the near-eye display system includes a light source device, an optical assembly at least including a waveguide lens, a processor, and a wireless communication module; an area, right facing the waveguide lens, of the housing is a light-transmitting area; the optical assembly is configured to transmit projection light outputted by the light source device to a human eye through the waveguide lens; the processor is in communication connection with an external terminal device through the wireless communication module, so that information interaction between the processor and the external terminal device is facilitated; and the housing is further provided with a waterproof key-attached to the processor and configured to send a trigger instruction to the processor when pressed, so that the processor controls a working state of the light source device according to the trigger instruction. According to the smart swimming goggles in the disclosure, more swimming information data is able to be provided for a swimmer, the swimming interestingness is enhanced, and the personalized requirements of a user are met.

A near-eye display system includes a waveguide having an incoupler configured to receive display light from an optical engine and to redirect the display light into the waveguide. The display system includes one or more integrated optical elements that are each configured to receive the display light and to apply a first optical function to the display light. The waveguide may include one or more encapsulation layers to encapsulate the incoupler and / or at least one of the integrated optical elements.

A near-to-eye display system (1) and AR glasses (3). The near-to-eye display system (1) comprises an optical waveguide module (10), an optical engine module (20) and a metalens assembly (22). A first in-coupling grating region (111) and a first out-coupling grating region (112) are formed in the optical waveguide module (10). The optical engine module (20) comprises a light source assembly (21), which is arranged opposite the first in-coupling grating region (111), and the metalens assembly (22), which is arranged between the light source assembly (21) and the optical waveguide module (10), wherein the light source assembly (21) is used for outputting image optical signals to the metalens assembly (22), the image optical signals comprising at least two types of optical signals of different attributes, and the attributes comprising at least one of a wavelength, an emission angle and an emission position. The metalens assembly (22) comprises a substrate (221) and a metasurface structure (222) on the substrate (221), wherein the metasurface structure (222) is configured to receive the image optical signals and diffract the optical signals to the first in-coupling grating region (111). The optical signals which have the same emission position have the same diffraction angle. Thus, the volume and weight of a lens of the optical engine module (20) are reduced, and the design requirements for high image quality and a large field of view are also met.

The invention provides a near-to-eye display optical waveguide and near-to-eye display equipment. The near-to-eye display optical waveguide comprises at least one waveguide substrate and optical gratings arranged on the waveguide substrate, the optical gratings comprise a pre-coupling-in optical grating and at least one group of diffraction optical gratings, and the diffraction optical gratings comprise a coupling-in optical grating and a coupling-out optical grating; the coupling-in grating is located behind the pre-coupling-in grating in the transmission direction of the light beams, and the coupling-in grating is arranged close to the coupling-out grating relative to the pre-coupling-in grating in the direction of the center connecting line of the coupling-in grating and the coupling-out grating; wherein the pre-coupling-in grating is used for diffracting a light beam to the coupling-in grating, the coupling-in grating is used for coupling the light beam diffracted by the pre-coupling-in grating into the waveguide substrate and transmitting the light beam to the coupling-out grating along the waveguide substrate, and the coupling-out grating is used for coupling the light beam out of the waveguide substrate. Coupling efficiency is high, energy utilization rate is high, and processing cost is low.

The invention relates to the technical field of near-to-eye display, in particular to a miniature biprism projection system for a reflection illumination light source and near-to-eye display equipment. The miniature biprism projection system comprises an illumination light source, an image source, a first prism and a second prism, wherein the second prism is arranged between the first prism and the image source; the second prism is used for receiving the illumination light rays output by the illumination light source, reflecting the illumination light rays twice and then emitting the illumination light rays to the image source; the image source reflects the illumination light to form image light, and the image light is refracted by the second prism, then enters the first prism, is reflected twice in the first prism, and then is emitted to the exit pupil position. According to the projection system, the illumination light path and the imaging light path share the second prism, the illumination light is reflected twice by the second prism to the image source, the image light is refracted by the second prism, reflected twice by the first prism and then emitted to the exit pupil position, light path folding is achieved, and the size of the projection system is greatly reduced.

The invention relates to the technical field of near-eye display, and provides an optical waveguide, a display device and near-eye display equipment. The coupling-in region, the coupling-out region and the metasurface structure are arranged on the waveguide substrate; the metasurface structure is arranged between the image source screen and the coupling-in area; wherein the metasurface structure is used for carrying out collimation processing on incident light provided by an image source screen to obtain collimated incident light; the coupling area is used for coupling the collimated incident light into the waveguide substrate; the coupling-out region is used for coupling the incident light propagating in the waveguide substrate out to human eyes. Under the condition that the optical waveguide has the light ray processing capability corresponding to the optical waveguide system, the projection system and the optical waveguide system can be integrally arranged on the optical waveguide because the metasurface structure arranged on the optical waveguide has the light ray processing capability corresponding to the projection system; the miniaturization of a projection system and an optical waveguide system which are integrally arranged is promoted, so that the miniaturization of near-to-eye display equipment is promoted.

Disclosed herein are pupil expanders for pupil replication in near-eye display systems. In some examples, a pupil expander includes a waveguide and a variable reflectivity transflective mirror, where display light propagating in the waveguide is transmitted through a plurality of regions of the variable reflectivity transflective mirror to form a plurality of replicas of the pupil along one direction. Two such pupil expanders can be used to replicate the pupil in two directions. In some examples, a pupil expander includes a waveguide, an output coupler formed on or in the waveguide, and two or more transflective mirrors in the waveguide and parallel to a surface the waveguide for improving the pupil replication density and light intensity uniformity of the eyebox.

A micro-projection system based on a hybrid refractive-diffractive lens, relating to the technical field of near-eye display devices. A micro-projection lens set sequentially comprises, along an optical axis and from an exit pupil side (6) to an image source side (7), a first lens (1), a second lens (2), a third lens (3), and a fourth lens (4), wherein the first lens (1) is a plano-convex lens and protrudes toward the exit pupil side (6), the second lens (2) is a biconcave lens, the third lens (3) is a meniscus convex lens and protrudes towards the exit pupil side (6), and the fourth lens (4) is a biconvex lens. The first lens (1) has positive focal power, and is used for deflecting large-angle light rays. The second lens (2), the third lens (3), and the fourth lens (4) are cemented by means of an optical adhesive to form a hybrid refractive-diffractive lens; and the cemented surfaces of the second lens (2), the third lens (3), and the fourth lens (4) are each a superposition of an even asphere and a diffractive surface.

This disclosure provides a near-eye display device and its display control method, apparatus, and storage medium. The display control method of the near-eye display device may include: generating a left-eye image sequence and a right-eye image sequence through a dual-channel display component; controlling the display sequence of the dual-channel display component such that there is a predetermined time difference between the display times of each frame in the left-eye image sequence and the corresponding frame in the right-eye image sequence; wherein the display sequence enables the left-eye image sequence and the right-eye image sequence to be fused into a continuous dynamic image in visual perception.

The invention provides an optical lens and near-to-eye display equipment. The optical lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from a human eye entrance pupil side to an image source side along the reverse direction of light transmission, the first lens has negative focal power, the light-out surface of the first lens is a convex surface, and the light-in surface of the first lens is a concave surface; the second lens has positive focal power, the light-out surface of the second lens is a convex surface, and the light-in surface of the second lens is a convex surface; the third lens has focal power; the fourth lens has positive focal power; the fifth lens has negative focal power, and the light emitting surface of the fifth lens is a concave surface; and the range of the distance CTW between the light incident surface of the fifth lens and the image source on the optical axis is adjustable. The optical lens provided by the invention has the advantages of adjustable diopter and excellent imaging quality.

An anamorphic directional illumination device may provide a near-eye display apparatus or a vehicle external light device. The anamorphic near-eye display apparatus comprises a spatial light modulator with asymmetric pixels; an input transverse anamorphic lens; and an extraction waveguide that passes input light in a first direction between a polarization-sensitive reflector and front guide surface to a lateral anamorphic reflector, and to reflect the light back through the extraction waveguide to guide between the rear guide surface and front guide surface. Reflective extraction features are arranged to extract the reflected light towards the pupil of a viewer, maintaining the directionality of the fan of light rays from the spatial light modulator and anamorphic imaging system. A thin, transparent and efficient anamorphic display apparatus for Augmented Reality and Virtual Reality displays and for scene illumination is provided.

The embodiment of the utility model discloses a diffraction optical waveguide and near-eye display equipment, the diffraction optical waveguide comprises at least one layer of waveguide sheet, the waveguide sheet comprises a first surface and a second surface which are parallel to each other along the thickness direction of the waveguide sheet, and the first surface and / or the second surface at least comprises a coupling-in grating and a coupling-out grating; the coupling-in grating is used for coupling image light rays emitted by an optical machine into the waveguide sheet, so that the image light rays are totally reflected to the coupling-out grating in the waveguide sheet and are coupled out of the waveguide sheet through the coupling-out grating; an optical resin material layer is at least arranged in the area where the coupling-out grating is located, the optical resin material layer completely fills a grating groove of the coupling-out grating, and a flat and smooth surface is formed on the side, away from the waveguide sheet, of the optical resin material layer. The diffraction optical waveguide provided by the utility model is light in weight, thin in thickness and good in safety performance.

The invention discloses a diffraction optical waveguide and a near-to-eye display device, and the diffraction optical waveguide comprises a waveguide substrate, the surface of which is provided with a light coupling function region; the light coupling function area at least comprises a coupling-in area and a coupling-out area; an auxiliary structure is arranged in other areas, except the light coupling function area, of the surface of the waveguide substrate, the auxiliary structure comprises a plurality of auxiliary units, and the auxiliary units are used for cancelling reflected light interference formed when ambient light enters the auxiliary structure. According to the technical scheme provided by the invention, unexpected surface reflection generated on the surface of the diffractive optical waveguide can be reduced.

The invention relates to a near-to-eye display device and electronic equipment, the near-to-eye display device comprises a first compensating mirror and an optical waveguide sheet which are sequentially stacked, the optical waveguide sheet is provided with a coupling-in grating and a coupling-out grating, the optical waveguide sheet has bending deformation, the first compensating mirror is arranged on the side close to the human eye, and the coupling-in grating is arranged on the coupling-out grating. The first compensating mirror is used for compensating propagation deviation generated by the first light, the first light is diffracted by the coupling-in grating to enter the optical waveguide sheet and is coupled out by the coupling-out grating after being totally reflected by the optical waveguide sheet, and the propagation deviation generated by the first light is generated based on bending deformation of the optical waveguide sheet.

A beam of light is directed onto, and scanned across, a controllably-selected portion of a concave-curved light-redirecting surface that provides for redirecting and redistributing the light and illuminating a two-dimensional image-display modulation array. A virtual image of the two-dimensional image-display modulation array is formed by an optical subsystem. Light thereof propagating from an aperture of the optical subsystem is collected onto a subpupil within an exit pupil of the optical subsystem on a surface proximate to an outer surface of an eye location. The subpupil is associated with the controllably-selected portion of the concave-curved light-redirecting surface, and with a corresponding portion less than all of the light of the virtual image that is associated with a gaze direction of the eye when viewing the subpupil. A location of the subpupil within the exit pupil corresponds to a location of the controllably-selected portion on the concave-curved light-redirecting surface.

The invention discloses a projection display system and near-to-eye display equipment. The projection display system comprises a beam splitter prism, a display element and an imaging assembly. The beam splitter prism is matched with a reflector, a field lens and a single lens in the imaging assembly, and light in the projection display system is turned. Light emitted by the display element enters the beam splitter prism after passing through the field lens and is transmitted to the reflector by the beam splitter prism, the reflector reflects the light, and the reflected light enters the beam splitter prism again, is reflected to the single lens by the beam splitter prism and then is emitted from the light emitting side of the projection display system. Therefore, the imaging light path is compressed, the size of the projection display system is effectively reduced, and the miniaturization of the projection display system is realized.

The invention provides an optical lens and near-to-eye display equipment. The optical lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens along the reverse direction of light transmission, the first lens has positive focal power, the light-out surface of the first lens is a convex surface or a plane, and the light-in surface of the first lens is a convex surface. The second lens has focal power, and the light emitting surface of the second lens is a convex surface; the third lens has positive focal power, the light-out surface of the third lens is a convex surface, and the light-in surface of the third lens is a convex surface; the fourth lens has negative focal power, and the light incident surface of the fourth lens is a concave surface; the fifth lens has positive focal power, and the light-emitting surface of the fifth lens is a convex surface; the sixth lens has negative focal power, and the light incident surface of the sixth lens is a concave surface; the seventh lens has focal power, the emergent surface of the seventh lens is a convex surface, and the incident surface of the seventh lens is a concave surface; and the range of the distance CTW between the light incident surface of the seventh lens and the image source on the optical axis is adjustable. The optical lens provided by the invention has the advantages of adjustable diopter and excellent imaging quality.

The utility model is suitable for the technical field of near-to-eye display, and provides a near-to-eye display circuit, a near-to-eye display device and electronic equipment. The near-to-eye display circuit comprises a display array, the display array comprises x column connecting lines and y row connecting lines, each column connecting line is provided with y first bonding positions, and each row connecting line is provided with x second bonding positions, the bth first bonding position of the bth column connecting line and the bth second bonding position of the bth row connecting line are used for bonding the two ends of the light-emitting module respectively, x and y are natural numbers larger than 1, a is larger than or equal to 1 and smaller than or equal to x, and b is larger than or equal to 1 and smaller than or equal to y; the driving modules are correspondingly and electrically connected with the x column connecting lines and the y row connecting lines respectively and used for outputting corresponding column driving signals to the x column connecting lines respectively and outputting corresponding row driving signals to the y row connecting lines respectively so as to drive the light-emitting modules at the corresponding positions in the display array to emit light.

The embodiment of the utility model discloses a diffraction optical waveguide and a near-to-eye display device. The diffractive optical waveguide comprises at least one waveguide substrate, and the refractive index of the waveguide substrate is 1.4-2.2; the at least one coupling-in grating area is located on the waveguide substrate, the coupling-in grating area comprises a coupling-in grating, and the period of the coupling-in grating ranges from 150 nm to 700 nm; image light enters the coupling-in grating area of the waveguide substrate, and part of image light corresponding to the field angle is diffracted into the waveguide substrate through the coupling-in grating and is coupled out to human eyes after being totally reflected and transmitted in the waveguide substrate. According to the diffraction optical waveguide provided by the embodiment of the utility model, through setting a proper coupling grating period, the diffraction optical waveguide realizes propagation of partial field angle light, and at least two partial field angles are superposed to form a complete field angle.

The invention provides a volume holographic grating waveguide, a manufacturing method thereof and near-to-eye display equipment. The problem that coupled light intensity is not uniform due to transmission light intensity attenuation when light is transmitted in a waveguide substrate can be solved. The volume holographic grating waveguide includes: a waveguide substrate having an in-coupling region and an out-coupling region for transmitting image light from the in-coupling region to the out-coupling region; the coupling-in element is correspondingly arranged in the coupling-in area of the waveguide substrate, and is used for coupling the image light into the waveguide substrate from the coupling-in area; and a volume hologram out-coupling grating, which is correspondingly disposed in the out-coupling area of the waveguide substrate, and is used for coupling the image light out of the waveguide substrate from the out-coupling area. Wherein a thickness of the volume holographic decoupling grating increases along an image light transmission direction at the decoupling region.

The embodiment of the invention provides near-to-eye display equipment and an eye movement tracking method. The near-to-eye display device comprises an optical waveguide, a light source assembly, an image acquisition unit and a processing unit, the optical waveguide comprises a plurality of first coupling-out structures, and the first coupling-out structures can be switched between a coupling-out state and a non-coupling-out state; the light source assembly is used for emitting infrared light towards the optical waveguide; the image acquisition unit is used for acquiring an eye image; the processing unit is electrically connected with the optical waveguide and the image acquisition unit, and is used for determining the position of a preset eye region according to the eye image; determining a target coupling-out structure in the plurality of first coupling-out structures according to the position of the eye preset area; the target coupling-out structure is controlled to be in a coupling-out state, so that the infrared light is coupled out of the target coupling-out structure to a pupil area of the eye; and determining the gazing direction of the eye according to the light spot formed by the infrared light in the image of the eye. The technical scheme of the embodiment of the invention aims to enlarge the eye movement tracking range, so that the infrared light is accurately transmitted to the pupil area of the eye, and the eye movement tracking precision is improved.

A computer-implemented system and method for pupil-directed retinal projection in near-eye displays are disclosed. The computer-implemented system provides smart glasses with directed physical pixels that project light beams / signals directly onto user's retina based on pupil position and size. The glasses comprise frame, lenses with directed pixel layers, sensors for tracking pupil movement. Each directed pixel generates multiple virtual pixels by rapidly changing its emission angle. Each directed pixel with pupil's real-time tracking, provides automatic adjustments to virtual contents, ensuring accurate alignment of images with field of view of users while identifying vergence-accommodation conflict. The glasses function as prescription lenses, virtual reality displays, augmented reality devices without traditional optical systems. Additional features include depth sensors, cameras, connectivity to peripheral devices. The glasses enable seamless blend of virtual and real-world experiences, creating immersive “Mixverse” environment. Various input methods, including gesture recognition and brain-computer interfaces, allow for intuitive control and interaction.

The embodiment of the invention provides an optical element, a preparation method thereof, an eye movement tracking device and near-to-eye display equipment. A reference structure is formed on the optical element, the optical element can transmit visible light, and at least part of infrared light reflected by the eyes is reflected to the camera through the optical element, so that an image collected by the camera comprises an eye pattern, and at least part of the infrared light reflected by the eyes irradiates the reference structure; the image collected by the camera further comprises the reference pattern, so that the sight line direction of the eye can be determined according to the eye pattern and the reference pattern. According to the technical scheme of the embodiment of the invention, the mounting flexibility of the infrared light source and the camera is improved, so that the structural design of the near-to-eye display equipment is facilitated.

The invention provides an optical lens and near-to-eye display equipment. The optical lens sequentially comprises a first group with positive focal power, a second group with positive focal power and a third group with negative focal power along the reverse direction of light transmission, the first group sequentially comprises a first lens with positive focal power and a second lens with positive focal power from a human eye entrance pupil side to an image source side; the second group sequentially comprises a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with focal power, a sixth lens with focal power and a seventh lens with positive focal power from the human eye entrance pupil side to the image source side; the third group sequentially comprises an eighth lens with negative focal power and a ninth lens with negative focal power from the human eye entrance pupil side to the image source side; and the range of the distance CTW between the light incident surface of the ninth lens and the image source on the optical axis is adjustable. The optical lens provided by the invention has the advantages of adjustable diopter and excellent imaging quality.

The utility model discloses a pair of near-to-eye display glasses, which comprises a waveguide lens, a first lens group and a second lens group which are used for shaping projection light beams output by a projection light source to form parallel light beams with light beam cross sections not smaller than a set cross section, and the parallel light beams are transmitted through the waveguide lens to be output in a one-dimensional pupil expansion manner in a direction perpendicular to human eyes; the deflection optical element is used for deflecting the projection light beam output by the first lens group, the projection light beam output by the projection light source sequentially passes through the first lens group, the deflection optical element and the second lens group, and the optical axis of a light path is transmitted and extends in an L shape or a Z shape; and the projection light source and the first lens group deviate towards one side, deviating from the waveguide lens, of the glasses leg structure relative to the second lens group. According to the near-to-eye display glasses, on the basis that the size of the eye box of the projection picture is guaranteed, the problem that the head of a wearer is squeezed by the glasses leg structure is avoided, and on the basis that the eye box of the projection picture output in the near-to-eye display glasses meets the watching requirement, the wearing comfort of the glasses equipment is guaranteed.

The invention discloses a large-view-field compact eyepiece lens for near-to-eye display and a near-to-eye display device. The large-view-field compact eyepiece lens comprises an image source, a first optical lens, a second optical lens, a third optical lens, a fourth optical lens and an optical prism, light is emitted from an image source, sequentially penetrates through the first optical lens and then enters the optical prism, and is refracted and reflected by the interior of the optical prism for multiple times: firstly, the light is reflected back to the optical prism through the second surface of the third optical lens, then is reflected by the second surface of the second optical lens, and finally is output through the optical prism and penetrates through the fourth optical lens to be emitted; the optical prism is compact in structure, optical path folding is achieved, and the length of an optical system is effectively shortened. According to the eyepiece lens, the field angle is 50 degrees, the length of an optical system can be shortened by at least 20%, the imaging definition is high, and the structure is compact.

An anamorphic near-eye display apparatus comprises a spatial light modulator with asymmetric pixels; an input transverse anamorphic lens; an input waveguide that passes input light in a first direction to a partially reflective mirror, an intermediate waveguide comprising a reflective lateral anamorphic component arranged to receive light from the partially reflective mirror and to provide imaging of the spatial light modulator in the lateral direction; and an extraction waveguide arranged to receive light from the reflective lateral anamorphic component. Reflective extraction elements are arranged to extract the imaged light towards the pupil of an observer, maintaining the directionality of the fan of light rays from the spatial light modulator and anamorphic imaging system. A thin, transparent and efficient anamorphic display apparatus for Augmented Reality and Virtual Reality displays is provided.