828 results about "Near eye display" patented technology

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.

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 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 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.

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.

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.

The invention discloses a near-to-eye display system based on a short-focus turn-back light path. The near-to-eye display system comprises a curved-surface display screen, a first lens and a second lens which are sequentially arranged from the environment side to the human eye side. Wherein the curved display screen is a transparent display screen; the first lens and the second lens do not have perspective focal power to natural light; the polarizing film systems are arranged on the surfaces of the first lens and the second lens, so that light emitted by a display screen passes through the first lens in a transmission manner, is reflected and amplified twice by the second lens and the first lens in sequence, and finally enters human eyes for imaging; ambient light transmits through the display screen, the first lens and the second lens and enters human eyes for imaging. The near-to-eye display system is realized based on a short-focus turn-back light path and a transparent curved-surface display screen, and can realize augmented reality display with a large field angle.

The invention provides a near-eye display device and an image calibration method, and the near-eye display device comprises a projection module which generates projection light of a projection image; the spectroscope is used for transmitting at least part of the projection light rays in a calibration mode and reflecting at least part of the projection light rays for watching in a watching mode; the image generation module is used for converting at least part of transmitted projection light into a re-imaging image in a calibration mode; and the controller is used for acquiring an image calibration parameter based on the reimaging image and a reference image corresponding to the projection image in a calibration mode, calibrating the reimaging image based on the image calibration parameter, and updating the projection image by using the calibrated reimaging image. And when the difference between the re-imaging image and the reference image is smaller than or equal to a difference threshold value, switching to a viewing mode. The near-to-eye display device can be dynamically calibrated in real time on the spot.

Provided is a waveguide guiding light to a target area, the waveguide including an input-coupling diffractive optical element (DOE) inputting the light into the waveguide, an expanding DOE expanding the light input into the waveguide through the input-coupling DOE, an output-coupling DOE outputting the light expanded in the waveguide by the expanding DOE to an outside of the waveguide, wherein the expanding DOE includes a plurality of expanding segments, and the output-coupling DOE includes a plurality of output-coupling segments.

The embodiment of the invention provides a diffractive optical structure and near-to-eye display equipment. The diffractive optical structure comprises a waveguide substrate, a grating area and a non-grating area, the grating area and the non-grating area are arranged on the waveguide substrate, a grating structure is formed in the grating area, the non-grating area is covered with a dielectric layer, and the refractive index of the grating structure and the refractive index of the dielectric layer are both n1; in the areas, corresponding to the multiple grating structures and / or the multiple non-grating areas, on the waveguide substrate, at least part of the areas are provided with compensation thin film layers; the thickness Ti of the compensation thin film layer satisfies Ti < di * (n1 / n2), and di is the grating depth of the grating structure at the position corresponding to the compensation thin film layer or the thickness of the dielectric layer; n2 is the refractive index of the compensation film layer; the compensation thin film layer is configured to compensate reflection phase difference caused by structural difference between the grating area and the non-grating area when light is propagated in the waveguide substrate in a total reflection mode, and the absolute value of the reflection phase difference does not exceed a preset threshold value.

The voice directional enhancement method comprises the steps that a current frame and a staring direction of mixed voice are acquired, and the mixed voice is acquired by a microphone array; constructing a direction feature based on the current frame of the mixed voice and the gazing direction, and constructing an audio feature based on the current frame of the mixed voice; determining a current frame mask according to the direction features and the audio features; and determining a target enhanced voice of the current frame according to the current frame mask, the current frame of the mixed voice and the plurality of historical frames of the mixed voice. In the embodiment of the invention, the mask of the current frame is generated under the guidance of the gazing direction, so that the target voice can be accurately separated from the mixed voice. Besides, based on the current frame mask and the current frame of the mixed voice, the target voice enhancement is performed frame by frame from the overall characteristics of the mixed voice by referring to a plurality of historical frames, so that the accuracy of the target enhanced voice of the current frame can be effectively improved, and thus the accuracy of directional pickup is improved.

The present disclosure relates to the technical field of display. Provided are a display panel and a display apparatus, which aim to improve the light-output gain of a near-eye display apparatus. The display panel comprises a plurality of sub-pixels, wherein each sub-pixel comprises a liquid crystal, and a color film layer and a driving structure layer, which are respectively located on two opposite sides of the liquid crystal. Each sub-pixel further comprises: an optical structure, which is located on a light-output path from a backlight source of the display panel to a light-emergent face of the display panel, wherein the optical structure comprises at least one lens, the lens is at least used for converging light emitted from the backlight source, and the orthographic projection of the lens on a plane of the display panel overlaps an opening region of the sub-pixel; and a light-shielding structure, which comprises a part located on the driving structure layer and a part located on the color film layer, wherein the orthographic projection of the light-shielding structure on the plane of the display panel overlaps an edge of the opening region.

The invention relates to a packaging structure of a micro display chip and a display device, and the packaging structure comprises a substrate, the surface of which comprises a display area and a non-display area; the electrode pads are located in the non-display area; and a plurality of through hole plugs located in the substrate, wherein one end of each through hole plug is electrically connected with the electrode pad. In AR near-to-eye display application, the light absorption structure can effectively absorb stray light returned from components such as an optical waveguide and the like, secondary specular reflection of the metal electrode pad on the non-display area is avoided, ghosting is prevented from being formed, and the imaging contrast ratio and the picture purity are remarkably improved. The light absorption structure is integrated in the packaging structure, and a stray light feedback path is cut off through a physical means on the premise that normal light emitting of a display area and electrical connection of an electrode pad are not affected, so that the optical performance of the micro-projection ray machine is improved, the final display effect is guaranteed, and the display effect is improved. Therefore, the technical problem of image quality degradation caused by high reflectivity of the non-display area is effectively solved.

The invention discloses a multi-focal near-to-eye display holographic optical element and a preparation method and device thereof. The element adopts a composite structure of a substrate, a multi-focal correction layer and a holographic recording layer, a holographic grating accurately matched with each optical partition of the correction layer is formed in the recording layer through a partition exposure technology, and multi-depth virtual image display and user refraction correction functions can be realized at the same time. The preparation device comprises a coherent light source, a beam splitter, a diffusion plate, a focal plane displacement system, a mask component and a master controller, and partition exposure is realized through cooperative control. The problem that traditional near-to-eye display cannot meet multi-focus display and refraction correction at the same time is solved, a user can clearly perceive fused multi-depth virtual information and a real environment without additionally wearing glasses, the visual comfort and experience are remarkably improved, and the method is suitable for AR / VR and other head-mounted display devices.

The invention provides a near-to-eye display device. The near-to-eye display device comprises a waveguide, a coupling-out grating, a first zoom module and a control module. The waveguide comprises a first surface and a second surface opposite to the first surface, and the waveguide is used for conducting image light. The coupling-out grating is arranged on the first surface and used for receiving and coupling out the image light emitted from the waveguide. The first zoom module is arranged on the second surface and located on the light path of the image light and the ambient light, and the first zoom module is used for receiving the image light and the ambient light and transmitting the image light and the ambient light to human eyes. The control module is used for changing the diopter of the first zoom module so as to adjust the focusing positions of the ambient light and the image light.

The invention provides a pre-correction display parameter calibration method, a near-to-eye display method, a device and equipment, and relates to the technical field of display equipment, the method comprises the following steps: determining a part of fixation points in a plurality of fixation points in a field of view of a near-to-eye display module; obtaining an in-eye simulation data set of a central display component and / or a peripheral display component corresponding to the partial fixation point; and according to the in-eye simulation data set, determining a pre-correction display parameter set of the central display assembly and / or the peripheral display assembly. The embodiment of the invention can provide a technical scheme capable of realizing natural visual transition and pixel imaging offset correction.

The present application relates to the technical field of near-to-eye display, and provides a near-to-eye display apparatus, a wearable device, and a control method for the near-to-eye display apparatus. The near-to-eye display apparatus comprises: a display assembly, provided with a first connecting structure, the first connecting structure being configured to be connected to a wearable member, and the display assembly being used for displaying an image; and a data collection assembly, communicationally connected to the display assembly, the data collection assembly being configured to allow releasable connection with the display assembly, the data collection assembly being provided with a second connecting structure, the second connecting structure being configured to be connected to the wearable member, and the data collection assembly being used for acquiring data. The data collection assembly is releasably connected to the display assembly, so that the data collection assembly and the display assembly can be combined together or separated, achieving flexible mounting, thereby effectively improving the compatibility with devices. On the basis of different usage scenarios, the display assembly and the data collection assembly can be assembled on different sides or the same side of the wearable member, satisfying personalized use requirements.