458 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.

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.

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 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 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 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 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 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.

Aspects of the disclosure provide a first lens. The first lens can include an optically transparent member having a first surface and a second surface. The optically transparent member can be configured to receive light from a display device via the first surface. The received light exits the optically transparent member through the second surface. The first surface and the second surface of the optically transparent member can be aspheric. An in inner surface of the first surface is convex, and an outer surface of the first surface is concave. The inner surface is surrounded by the outer surface of the first surface. A thickness of a central region of the first lens can decrease from a center of the first lens, anda thickness of a peripheral region of the first lens can increase from a boundary of the central region.

The utility model discloses a diffraction optical waveguide, which comprises a waveguide substrate, the waveguide substrate at least comprises a coupling-in area, a first coupling-out area and a second coupling-out area, and the first coupling-out area and the second coupling-out area are respectively used for corresponding to a left eye and a right eye of a human eye, the first coupling-out area, the coupling-in area and the second coupling-out area are sequentially arranged in the first direction, and the size of the coupling-in area in the first direction is matched with the size of a projection light spot on a coupling-in plane in the first direction. The size of the coupling-in area in the second direction is larger than the size of a projection light spot on the coupling-in plane in the second direction, and the first direction is orthogonal to the second direction. The diffraction optical waveguide provided by the utility model can be compatible with an optical machine installation position in a certain range.

Embodiments of this application relate to the field of display technologies, and provide an optical waveguide and a near-eye display device. The optical waveguide includes a first lens, a second lens, a connecting portion that connects the first lens and the second lens, an in-coupling grating, a first out-coupling grating, and a second out-coupling grating. The in-coupling grating is located on the connecting portion, and is configured to couple incident light to the optical waveguide. After the incident light is diffracted through the in-coupling grating, first diffractive light transmitted in the first lens and second diffractive light transmitted in the second lens are formed. The first out-coupling grating is located on the first lens and is configured to couple the first diffractive light out of the first lens.

The invention discloses a brightness extraction method, electronic equipment, a storage medium and a program product, and relates to the technical field of near-to-eye display, and the method comprises the steps: when an instruction of carrying out the brightness extraction of a display screen of near-to-eye display equipment through a target camera is detected; the mapping relation between camera pixels of a target camera and screen pixels of the display screen is determined, and the target camera is located at an exit pupil frame of the near-eye display device; displaying the calibration brightness image on a display screen, and shooting through a target camera to obtain a calibration brightness camera image corresponding to the calibration brightness image; and based on the mapping relationship, extracting brightness information corresponding to each screen pixel on the display screen from the calibrated brightness camera image. According to the invention, under the condition that the camera image is seriously distorted due to distortion of the optical system, the accurate brightness information completely matched with the original pixel distribution of the screen can be reliably and efficiently obtained.

The invention discloses a lens identification method and device in near-to-eye display equipment and the near-to-eye display equipment. The method comprises the steps of obtaining at least one comparison image based on a near-to-eye display device which is worn by a user and can be provided with a lens; determining a distortion result of the comparison image; determining whether a lens is installed in the near-to-eye display equipment according to the distortion result; wherein the at least one comparison image is acquired by an image acquisition device arranged between the lens mounting position and the near-to-eye display screen. The problem that whether the lens is installed in the near-to-eye display equipment or not cannot be automatically detected is solved, rapid identification of whether the lens is installed or not is achieved, automatic identification can be completed without operation of a user, and the cost of image acquisition through the image acquisition device is low.

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

The invention relates to the technical field of near-to-eye display, and provides a near-to-eye display method and near-to-eye display device.According to the method, a high-resolution original electronic image is generated through a micro display screen, accurate information content is provided for a user, and the quality and definition of an information source are ensured. The collimating projection lens converts divergent light of the micro display screen into parallel light beams, disordered scattering of light is reduced, and images of the micro display screen are imaged at an infinite distance after passing through the collimating lens. Parallel light beams are directionally regulated and controlled through micro-structure devices such as a micro-cube-corner prism array or an orthogonal reflector array, the parallel light beams are converged to a small-size exit pupil area, on-demand display of image information is achieved, an image can be seen only when the sight line of a user is aligned, and therefore continuous interference of the information on the normal view field of the user is avoided, and the user experience is improved. The comfort and concentration degree of visual experience are improved, the information transmission effect is optimized, and more natural, comfortable and efficient man-machine interaction experience is provided for near-eye display equipment.

The invention discloses a system for eliminating ghosting head-up display based on a polarization body holographic optical waveguide. The system comprises a high-selectivity P light reflecting film, a circular polarizer, a polarization body holographic optical waveguide structure, a projection image source and head-up display windshield glass, a high-selectivity P light reflecting film is arranged in the head-up display windshield glass; the emergent light of the projection image source enters the in-coupling grating of the polarization body holographic optical waveguide structure and enters the circular polarizer through the out-coupling grating of the polarization body holographic optical waveguide structure, and the emergent light of the circular polarizer is reflected by the high-selectivity P light reflecting film in the head-up display windshield glass. The method and thought are provided for existing diffraction optical waveguide type head-up display and image quality optimization design thereof, the imaging quality is improved, the process complexity is reduced under the condition that the size advantage of the diffraction optical waveguide is expanded, an optical system with optical efficiency and low ghosting phenomenon is expected to be achieved, and technical support is provided for development of near-to-eye display equipment.

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

The invention discloses a PVG optical waveguide diffraction efficiency uniformity detection method and system, and aims to provide a scheme for comprehensively evaluating optical waveguide diffraction efficiency uniformity and polarization characteristic evaluation, and the method comprises the following steps: constructing and configuring a light source; image acquisition and preprocessing; performing diffraction efficiency analysis and uniformity evaluation; identifying defects; fusing multi-view results; verifying polarization response consistency; and generating a detection report containing the diffraction efficiency heat map of the optical waveguide to be detected, defect distribution and a polarization response curve. On the premise that the structure of the optical waveguide is not damaged, diffraction efficiency uniformity quantification, polarization consistency evaluation and defect identification of the optical waveguide in the whole field of view are achieved, the diffraction performance of the optical waveguide is evaluated globally, the detection accuracy, stability and automation level of a waveguide device are remarkably improved, and the detection efficiency is improved. Efficient and standardized technical support is provided for design, manufacturing and quality control of the optical waveguide, and a key quality control means is further provided for industrialized mass production of AR near-to-eye display modules.

The invention relates to the technical field of audio signal processing, in particular to an audio equalization adjustment method and device and a storage medium. The audio equalization adjustment method comprises the following steps: acquiring a physiological movement signal and an environment audio signal of a user; respectively processing the physiological motion signal and the environment audio signal to obtain physiological motion features and environment noise features; performing fusion decision based on the physiological motion features and the environmental noise features to generate a target equilibrium parameter set; and based on the target equalization parameter set, performing equalization adjustment on the audio output signal of the near-to-eye display device. According to the method, the auditory experience of the near-to-eye display equipment in the motion scene can be intelligently optimized.

The invention relates to a near-to-eye display optical system based on a laser light source and an LCOS modulation module, and belongs to the technical field of near-to-eye display. The invention aims to solve the technical problems that the existing near-to-eye display scheme is difficult to overcome speckle noise, chromatic dispersion, low luminous efficiency, overlarge size and the like at the same time. The system sequentially comprises a multi-mode laser light source module used for emitting low-initial speckle contrast imaging laser beams; the optical preprocessing module comprises a collimating lens group, a beam expanding prism and a phase perturber; the LCOS modulation module is used for simultaneously carrying out amplitude modulation on the light beam according to the image signal so as to load an image and carry out phase modulation so as to adjust wavefront, and reflecting and outputting an image light beam; the coupling module is used for carrying out light path coupling on the image light beam; and the near-to-eye display module is used for transmitting and projecting an image to human eyes. The system is mainly suitable for augmented reality glasses and other head-mounted display devices, and can realize high-image-quality and miniaturized near-to-eye imaging.

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

A near-eye display (10) includes a lightguide optical element (LOE) (12) with opposed major surfaces (12a, 12b), an image projector (14), a first region (16) having partially reflective surfaces (26, 27), and a second region (18) with an out-coupling arrangement (28). To suppress ghosts from single reflections at a facet or interface (25), an elongated light-deflecting structure (261, 271, 251) is provided on the first major surface (12a) adjacent thereto. The structure is configured so that a reverse-traced unguided ray from an eye-motion box (102) that would otherwise impinge the facet / interface is deflected so it does not impinge. A corrective light-deflecting structure (262, 272, 252) on the second major surface (12b) may counter-deflect rays to reduce impact on the peripheral vision. The light-deflecting structures provide beam steering without optical power and may be implemented as prisms or as diffractive / metasurface or volume-holographic elements, formed as discrete strips or portions of a continuous film.

The invention provides an optical waveguide and a near-to-eye display device. The optical waveguide comprises a light guide part, a relay module arranged on the light guide part and a coupling-out module. Wherein the relay module is used for coupling light rays propagated by total internal reflection in the light guide piece to the coupling-out module; the light guide device further comprises an extinction device arranged on the light guide part, the extinction device at least comprises a first extinction device, and the first extinction device is used for absorbing one-dimensional emergent light transmitted by the relay module. Wherein the ratio of the refractive index of the first extinction device to the refractive index of the light guide part is within a set threshold value, and extinction particles are doped in the first extinction device. According to the technical scheme, the extinction device is arranged on the light guide part to eliminate the one-dimensional emergent light transmitted by the relay module, so that stray light in the light guide part is reduced, and the display effect of the near-to-eye display device is improved.

The utility model discloses an optical waveguide assembly and a near-to-eye display device, the optical waveguide assembly comprises a first optical waveguide, a second optical waveguide, a third optical waveguide and a light blocking element, the first optical waveguide is provided with a coupling element, a first optical path turning element is arranged between the second optical waveguide and the first optical waveguide, and the third optical waveguide is provided with a coupling element. Light transmitted in the first optical waveguide passes through the first optical path turning element and then enters the second optical waveguide to be transmitted; a second optical path turning element is arranged between the third optical waveguide and the second optical waveguide, so that light transmitted in the second optical waveguide passes through the second optical path turning element and then enters the third optical waveguide for transmission, and a coupling-out element is arranged on the third optical waveguide and is used for coupling out the light in the third optical waveguide to enter human eyes; the light blocking element is arranged between the first optical waveguide and the third optical waveguide and used for preventing light of the coupling-out side of the third optical waveguide from being transmitted from the first optical waveguide. According to the optical waveguide assembly provided by the utility model, the concealment of an observer can be ensured.

The utility model discloses an optical machine module and a near-to-eye display device. A lighting assembly and a lighting and imaging multiplexing assembly of the optical machine module are located on the two sides of a waveguide sheet. Illuminating light emitted by the illuminating assembly is transmitted in the first direction, transmitted through the waveguide sheet, the fly-eye lens, the first polaroid and the lens set in sequence, then incident to the surface, close to one side of the lens set, of the light modulator and modulated into imaging light through the light modulator to be reflected, and the imaging light is transmitted through the lens set and the second polaroid in the second direction and then emitted to the other side of the light modulator. And after total reflection transmission in the waveguide sheet, the light is emitted from the exit pupil area of the waveguide sheet to the human eyes, and the included angles between the first direction and the normal of the light modulator and between the second direction and the normal of the light modulator are the same. According to the optical machine module provided by the utility model, the volume of the optical machine module can be reduced on the premise of ensuring the performance of the optical machine.

A display apparatus includes a first pixel unit located at the center of a display region and at least one second pixel unit located at an edge of the display region. A first light-emitting element in the first pixel and a first light emission adjustment unit corresponding to the first light-emitting element are not shifted from each other. Along a direction in which the first pixel unit points to the second pixel unit, a second light adjustment center of a second light emission adjustment unit in the second pixel unit and a second light-emitting center of a second light-emitting element corresponding to the second light emission adjustment unit are shifted from each other with a shift. The display region includes a shift linear-variation region. In the shift linear-variation region, shifts vary linearly with image heights of pixel units.

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

The utility model discloses a light beam offset device, an image resolution improving module and a near-to-eye display device, the light beam offset device comprises a light beam offset element and a driving device, the driving device is used for driving the light beam offset element to deflect N times in each period, and enabling the light beam offset element to sequentially go through an initial state and N-1 deflection states in each period, so that T low-pixel sub-images displayed by the image display device pass through the light beam offset element and the projection lens and then correspondingly output one non-offset sub-image and N-1 offset sub-images to human eyes in sequence, therefore, human eyes can feel a high-pixel image obtained by fusing and superposing one non-shifted sub-image and N-1 shifted sub-images; wherein N and T are integers, N > = 2, and 1 < = T < = N. According to the utility model, small volume can be realized and high-definition pictures can be provided.

The utility model provides a near-to-eye display device. The near-to-eye display device comprises a frame body which is provided with a near-to-eye side and an environment side; the near-to-eye display module is arranged on the frame body and is used for generating a digital image; the second optical element is arranged on the light emitting side of the near-to-eye display module and faces the near-to-eye side; the second optical element comprises a first active lens and a first conductive piece which is electrically coupled with the first active lens; the third optical element is connected with the frame body and faces the near-eye side; the third optical element and the second optical element are arranged at intervals; the third optical element comprises a second active lens and a second conductive piece which is electrically coupled with the second active lens; the processor is electrically connected with the first conductive part, the second conductive part and the near-to-eye display module respectively; the processor is configured to control the curvature change of the first active lens through the first conductive piece, and clearly project a digital image without projecting an environment image for a user; the processor is further configured to control the curvature change of the second active lens through the second conductive piece, an environment image is clearly projected for the user without projecting a digital image, and the zooming efficiency of the user is effectively improved.