999 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.

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-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.

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.

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.

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.

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 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.

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 invention discloses a micro eye jump detection method and device, near-eye display equipment and a computer readable storage medium. The micro eye jump detection method comprises the following steps: acquiring original data, wherein the original data comprises a time-varying coordinate sequence of an eyeball fixation point; processing the original data based on the filter bank to judge whether micro-eye jump motion exists in the coordinate sequence or not; and controlling the near-to-eye display equipment to execute corresponding operation according to the judgment result. Therefore, noise interference can be effectively avoided, the detection accuracy is improved, the calculation overhead can be reduced, and real-time detection is realized.

The invention relates to the technical field of man-machine interaction, and provides a control method and device of near-eye display equipment, the equipment and a storage medium, and the method comprises the steps: obtaining the posture data of the near-eye display equipment; determining a target operation object in a human-computer interaction interface of the near-to-eye display equipment according to the posture data of the near-to-eye display equipment; according to the operation information received by the near-to-eye display equipment, corresponding operation is executed on the target operation object, so that the control convenience of the near-to-eye display equipment is improved, and the interaction experience of a user on the near-to-eye display equipment is improved.

The invention provides a diffraction optical waveguide and a near-to-eye display device, the diffraction optical waveguide comprises a plurality of discrete diffraction coupling-out structures and a plurality of discrete light leakage prevention microstructures, each light leakage prevention microstructure at least corresponds to one diffraction coupling-out structure, and the spatial position of each diffraction coupling-out structure is close to the human eye relative to the light leakage prevention microstructure. Light leakage processing is carried out on the corresponding diffraction coupling-out structures through all the light leakage prevention microstructures, and information leakage is avoided; on the other hand, all the light leakage prevention microstructures are discrete, not overlapped and arranged in different areas in a small area mode, so that the area influencing the ambient light is small, the human eyes can still receive the ambient light through the area outside the light leakage prevention microstructures, namely, the human eyes can receive the ambient light to a large extent, and the light leakage prevention effect is improved. A user can receive ambient light while preventing information leakage as much as possible, the influence on external observation is reduced as much as possible, and the brightness of image light, obtained by human eyes, of an optical machine and the brightness of external ambient light are more adaptive and more balanced.

The invention relates to the technical field of optical imaging, and discloses an AR optical projection machine and an optical display system, the projection machine comprises a projection lens group, a color combination prism assembly and a three-color display array; the projection lens group comprises a diaphragm STO, a first lens, a second lens, a third lens and a fourth lens. The color combination prism assembly comprises a plurality of prisms which are glued with one another, and a film coating structure which is used for reflecting red light and blue light and transmitting green light is arranged on each prism; the three-color display array comprises three display chips; wherein the FOV (field of view) of the AR optical projection machine is greater than or equal to 30 degrees and less than or equal to 40 degrees; the ratio of the total optical length TTL of the AR optical projection machine to the effective focal length f of the system meets the condition that TTL / f is larger than or equal to 5.0 and smaller than or equal to 7. The field angle of the system is limited within the range of 30-40 degrees, the ratio of the total optical length TTL to the effective focal length f is kept within 5.0-7.7, an imaging field meeting the AR application requirement can be obtained within the limited optical path length, meanwhile, the overall compactness of the optical system is considered, and the optical system can be more easily integrated into small-size near-to-eye display equipment.

The application provides an optical device and a near-eye display device. The optical device comprises a light guide and a reflecting surface. The reflecting surface is arranged obliquely relative to two parallel total internal reflection surfaces of the light guide to couple light into the light guide. First and second ends of the reflecting surface are arranged on opposite sides of the first total internal reflection surface. The first and second ends of the reflecting surface satisfy the following conditions: light within an incident angle range enters the optical device through the light incident end, is reflected by the reflecting surface once to the second total internal reflection surface, and spreads in the light guide; and edge light within the incident angle range that is incident obliquely to the second end of the reflecting surface is reflected by the reflecting surface twice and then reflected to a space between the first end of the reflecting surface and the first total internal reflection surface. By arranging the reflecting surface obliquely relative to the first total internal reflection surface, at least 50% of light within a maximum incident angle range is spread in the light guide and stray light is filtered, thereby improving the effect of the light guide in display implementation of the near-eye display.

A method for correcting nonuniformity of a near-eye display (NED) includes: obtaining a first plurality of images in response to a first test pattern being displayed by a display of the NED, each of the first plurality of images being obtained at a different location adjacent to an end of an optical path coupled to the display; extracting a distinguishing frequency component among the first plurality of images, the distinguishing frequency component being at least caused by stray light introduced by the optical path; and determining a correction scheme for correcting nonuniformity of the NED based on the distinguishing frequency component.

A waveguide display system include a waveguide, an input coupler configured to couple display light into the waveguide, a first pupil expander, and a second pupil expander. The first pupil expander is configured to deflect, at a first plurality of locations along a first direction, the display light towards the second pupil expander. The second pupil expander is configured to deflect, at a second plurality of locations along a second direction different from the first direction, the display light from the first pupil expander towards an eyebox of the waveguide display system. At least one of the input coupler, the first pupil expander, or the second pupil expander includes transflective mirrors that are tilted within the waveguide such that the transflective mirrors are inconspicuous when viewed from an oblique angle.

The utility model provides a near-to-eye display device, and the device comprises a projection light machine which is configured to generate light; the first prism is located on the light emitting side of the projection light machine, the first prism is provided with a first reflecting surface and a second reflecting surface, the first reflecting surface and the second reflecting surface are connected to form an edge, the edge and the projection light machine are oppositely arranged, and the edge is configured to divide light into first split light and second split light; the first reflecting surface is configured to reflect the first split light, and the second reflecting surface is configured to reflect the second split light; the optical waveguide assembly is arranged on the light emitting side of the first prism, and the optical waveguide assembly is configured to receive the first split light and the second split light. The near-to-eye display device can reduce the interference of the projection light machine on a wearer.

The utility model discloses an optical waveguide assembly, a near-to-eye display device and an optical device, the optical waveguide assembly comprises a composite layer, a grating and a reflecting layer, the composite layer comprises a plurality of dielectric layers, the dielectric layers comprise a first dielectric layer located on the surface layer, and a total reflection area is at least formed in the first dielectric layer; the gratings are arranged on the same side of the first dielectric layer, the coupling-in grating is used for coupling incoming light into the total reflection area to form total reflection propagation, and the coupling-out grating is used for coupling at least one part of the light in the total reflection area out of the composite layer; the reflecting layers are selectively arranged in a plurality of areas on the outer side surface of the first dielectric layer and used for reflecting light rays of the total reflection area so that the light rays can continue to be transmitted along a total reflection path, and the reflecting layers of at least one area are arranged at intervals. According to the optical waveguide assembly disclosed by the utility model, external light can be transmitted to the composite layer on the premise that light can be propagated in a total reflection manner through the reflecting layers arranged at intervals, so that the lighting effect and the contrast display effect are ensured.

The invention provides a near-to-eye display device and a preparation method thereof, the near-to-eye display device comprises a waveguide substrate, a coupling-in grating, a coupling-out grating and a metasurface lens, and the waveguide substrate comprises a light-in area and a light-out area; the coupling-in grating is located in the light incidence area of the waveguide substrate and used for enabling at least part of incident light to be coupled into the waveguide substrate along a first path. The coupling-out grating is located in the light emitting area of the waveguide substrate and is used for taking out the light coupled into the waveguide substrate and emitting the light along a second path; the metasurface lens is located in the light incident area of the waveguide substrate and used for adjusting at least part of incident light propagating along the first path from divergent light to collimated light. The overall size of the near-to-eye display device can be reduced, and the integration level of the near-to-eye display device is improved. And meanwhile, the attractiveness, portability and comfort of the near-to-eye display device can be improved.

A liquid crystal micro-lens array comprises m1 first electrode strips and m2 second electrode strips, the orthographic projection of each second electrode strip on a liquid crystal layer intersects with the orthographic projection of each first electrode strip on the liquid crystal layer, 1-n1 voltage signals are fed into the m1 first electrode strips respectively, 1-n2 voltage signals are fed into the m2 second electrode strips respectively, by controlling the voltage value of each voltage signal, the rotation angle of the liquid crystal molecules of the liquid crystal box at the position can be changed, annular phase delay distribution is formed, and therefore a curved surface micro lens is formed at every n1 * n2 intersection points. The first electrode strip and the second electrode strip are of a strip-shaped structure, manufacturing is simple, the size of n1 and n2 is controlled, the shape and size of the curved-surface micro lens can be controlled, and the regulation and control precision is high. The invention further provides a driving method of the liquid crystal microlens array and a near-to-eye display system comprising the liquid crystal microlens array.

The utility model provides a near-to-eye display assembly. The near-to-eye display assembly comprises a coupling-in substrate, the coupling-in substrate is provided with a reflecting surface and a light guiding-in surface, and the reflecting surface is used for receiving and reflecting light guided in through the light guiding-in surface; the turning structure is a diffraction structure; the coupling-out substrate and the turning structure are arranged on the surface of the coupling-in substrate or the surface of the coupling-out substrate, the coupling-out substrate and the coupling-in substrate are located on the same plane, the opposite side faces of the coupling-in substrate and the coupling-out substrate are connected, the coupling-out substrate comprises a plurality of coupling-out sub-parts, and the coupling-out sub-parts are connected with the coupling-in substrate and the coupling-out substrate. The plurality of coupling-out sub-parts are sequentially arranged along a first direction and extend along a second direction, the first direction is perpendicular to the second direction, a connecting surface between two adjacent coupling-out sub-parts in the plurality of coupling-out sub-parts is inclined to the first direction, and a functional film is arranged on the connecting surface. According to the utility model, the problems of distortion and difficult improvement of a rainbow effect of a near-to-eye display assembly in the prior art are solved.

A holographic near-eye display device with multi-angle simultaneous illumination comprises a light source module, a spatial light modulator, a beam splitter, an eyepiece, and a master controller. The light source module emits parallel light at different angles and simultaneously illuminates and covers effective working area of spatial light modulator which, loaded with a hologram, modulates incident parallel light at different angles to form diffracted parallel light at different angles, that is, virtual images at different viewing angles. Parallel light at different angles illuminates spatial light modulator. After modulated and diffracted by calculated hologram on spatial light modulator, the diffracted image light is converged by second lens to form different viewpoints for human eye to view. In multi-angle simultaneous illumination, additional time-sharing control of illumination unit is not needed. When size and position of human eye pupil change, clear virtual image is always seen, achieving expanding the eyebox.

The embodiment of the invention provides a diffractive optical structure and near-to-eye display equipment. The diffractive optical structure comprises a waveguide substrate and a grating area and a non-grating area which are arranged on the waveguide substrate, a grating structure is formed in the grating area, a dielectric layer covers the non-grating area, and the refractive indexes of the grating structure and the dielectric layer are n1; a pre-compensation structure is arranged in at least part of areas, corresponding to the multiple grating structures and / or the multiple non-grating areas, on the waveguide substrate, the pre-compensation structure is a concave structure which is formed in the thickness direction of the waveguide substrate and has a specific depth, and the concave depth hi of the pre-compensation structure meets the condition that hi is smaller than di * (n1 / n2), wherein di is the grating depth of the grating structure or the thickness of the dielectric layer at the position corresponding to the pre-compensation structure, i is the number of the grating area or the non-grating area, and i is a positive integer greater than or equal to 1; n2 is the refractive index of the waveguide substrate.

The invention provides a diffraction optical waveguide and a near-to-eye display device. The diffraction optical waveguide comprises a waveguide substrate, a coupling-in grating area, a coupling-out grating area and a turning grating area. The turning grating area comprises a first turning grating area, a second turning grating area and a third turning grating area; the first turning grating region is adjacent to the coupling-in grating region and the second turning grating region in the first direction, and the third turning grating region is adjacent to the first turning grating region, the second turning grating region and the coupling-out grating region in the second direction. After the first light is coupled into the waveguide substrate in the coupling-in grating area, the first light is transmitted to the coupling-out grating area after being sequentially acted by the first turning grating area and the third turning grating area, and is coupled out of the waveguide substrate through the coupling-out grating area; after the second light is coupled into the waveguide substrate in the coupling-in grating area, the second light is transmitted to the coupling-out grating area after being sequentially acted by the first turning grating area, the second turning grating area and the third turning grating area, and is coupled out of the waveguide substrate through the coupling-out grating area.

The invention belongs to the technical field of near-to-eye display, and discloses an integrated near-to-eye display method and device applying lens array light field display and human eye detection, and the device comprises a VR light machine housing, an environment camera, a display screen, a human eye camera, and a splicing screen gap. The method is low in cost; the lens function is comprehensively utilized, and hardware requirements are reduced; one or more lenses in the lens array are used as an optical element for light field display imaging and an optical element for a human eye camera at the same time, so that multifunctionalization of equipment is realized, the requirement of an additional hardware sensor is reduced, and the hardware cost is reduced. Due to integrated design, installation and maintenance are simplified; the structure is simple; seamless splicing is achieved, and the optical design is optimized; the performance is good; high resolution and large field angle are achieved; the lens array light field display technology can significantly improve the display resolution and expand the field angle, and provides clearer and broader visual experience for users.

The invention discloses an AR light machine and a near-to-eye display device, and relates to the technical field of AR optics. The illumination light path comprises a collimating lens, a compound eye, a first lens and a diffusion sheet which are tightly arranged in sequence along a light beam emitted by the light source; the imaging light path comprises a balsaming lens group, a polarization splitting prism, a reflector and a second lens in contact with the light-emitting surface of the polarization splitting prism, wherein the balsaming lens group, the polarization splitting prism and the reflector are tightly arranged in sequence in the direction of the light beam reflected by the LCOS. The lenses are tightly arranged, and in the illumination light path, light beams passing through the diffusion sheet sequentially enter a polarization splitting prism and a bonding lens group in the imaging light path, so that multiplexing of the polarization splitting prism and the bonding lens group is realized; in addition, in the imaging light path, through a folding structure of a polarization splitting prism, the size of the AR light machine is reduced; in addition, the LCOS is small in size. In conclusion, the volume of the AR light machine provided by the invention can be 30% of that of a traditional AR light machine, and miniaturization of the AR light machine is realized.

A near-eye display system including an optics module having a projector operable to generate angularly encoded light beams and a camera operable to capture images of an environment, wherein the optics module is operable to convey at least a portion of the light beams to an eyebox. An electronics module having a controller in electrical connection with the optics module, a mounting module located between the electronics module and the optics module, wherein the electronics module is coupled with the optics module via the mounting module, and a first pivot located between the optics module and the electronics module, wherein the optics module is rotatable relative to the electronics module about a first axis. Wherein at least a portion of the optics module is rotatable relative to the electronics module about a second axis oriented transverse to the first axis. Wherein the electronics module includes first and second opposing surfaces, wherein at least a portion of the optics module extends in a first direction, parallel to the second axis, relative to the first surface, and wherein at least a portion of the optics module extends in a second direction opposite the first direction, parallel to the second axis, relative to the second surface.