177 results about "Interpupillary distance" patented technology

The invention relates to the technical field of microscopes, in particular to a stereomicroscope which comprises an eyepiece, an interpupillary distance adjusting assembly, an optical hinge set, a prism steering set, a distributed reflection light path assembly and a continuous zoom objective lens set. The distributed back-shooting light path assembly comprises a negative lens group, a positive lens, a negative lens and a positive lens group, the negative lens group is arranged between the prism steering group and the continuous zoom objective lens group, the positive lens is arranged between the optical hinge group and the prism steering group, and the negative lens and the positive lens group are arranged between rectangular prisms in the optical hinge group; a negative lens group, a positive lens group, a negative lens group and a positive lens group are sequentially arranged among all parts of the stereomicroscope, so that the space layout of a mechanical structure is combined, the aperture of a light beam is adjusted, interception of the prism to the light beam is reduced, and off-axis vignetting is reduced; the technical problems of large off-axis vignetting and poor imaging quality caused by the fact that a light path passes through a plurality of groups of prisms in a stereomicroscope in the prior art are solved, and the overall imaging requirement is met.

The invention discloses a high-altitude falling simulation system based on VR equipment, and relates to the technical field of virtual reality simulation, and the system comprises a data collection module which collects the pupil distance and initial sight line data of a user; the visual disturbance module is used for dynamically adjusting local visual disturbance of a corresponding area in the high-altitude virtual scene based on the gaze data to form a visual disturbance effect; the psychological index calculation module is used for calculating an anxiety index and a focus drift speed by adopting a time sequence convolutional neural network according to the visual disturbance effect and the eye movement behavior of the user to obtain an anxiety index and a focus drift speed index; and the disturbance adjustment module adaptively adjusts the frequency and amplitude of the visual disturbance effect by adopting a method of combining fuzzy logic control and adaptive gain adjustment to obtain disturbance rhythm parameters. According to the method, the personalized matching ability and training effectiveness in psychological behavior intervention and virtual high-altitude adaptation training are improved.

The invention relates to a binocular having two tubes, which are connected to one another by means of a hinged bridge pivotable about a hinge axis for adjusting the interpupillary distance, wherein an axially displaceable focusing means is arranged in each one of the two tubes, and wherein a common focusing device for displacing the focusing means is formed, wherein the focusing device comprises a housing and a focusing knob rotatable about a rotational axis and the rotational axis is arranged coaxially to the hinge axis, and wherein the focusing knob is rotationally coupled to a focusing gear and the focusing gear, in each case, comprises a push rod, by means of which the focusing gear is, in each case, coupled to one of the two focusing means, wherein a direction of a back-and-forth displacement of the push rod and a direction of the hinge axis are aligned obliquely with respect to each other.

Artificial-reality devices may include left and right eyecups for respectively viewing left and right images. A flexible shroud membrane may be connected to the left and right eyecups. The artificial-reality devices may also include an interpupillary distance adjustment mechanism for adjusting a distance between the left and right eyecups and a force-offsetting mechanism configured to augment a force applied to adjust the distance between the left and right eyecups. Various other devices, systems, and methods are also disclosed.

A method for adjusting a depth of a stereoscopic image includes the following. A first disparity correction amount is obtained according to a distance between centers of two lenses of a stereoscopic camera and an interpupillary distance (IPD) of a first observer. A second disparity correction amount is obtained according to a difference between image distances of a stereoscopic display and the stereoscopic camera at zero disparity. A third disparity correction amount is obtained according to the IPD of the first observer and an IPD of a second observer. A stereoscopic image of an object photographed by the stereoscopic camera which has been corrected by the first disparity correction amount, the second disparity correction amount, and the third disparity correction amount is transmitted to the stereoscopic display. A device for adjusting a depth of a stereoscopic image is also provided.

An interpupillary distance estimation method is implementable by an electronic computer and includes the operations of acquiring at least one 2D image of a user's face, locating on the 2D image two reference points corresponding to the pupils of the user, and measuring the distance in pixels between the two reference points. The method further includes measuring the diameter in pixels of the user's iris, and calculating the pixel-to-millimetre conversion ratio between a predetermined iris diameter expressed in metric units and the iris diameter measured in pixels. The predetermined pupil diameter is set equal to the value of the iris diameter most widespread in the world population according to data contained in an anthropometric database. A first estimation of the interpupillary distance is determined by multiplying the distance in pixels between the two reference points corresponding to the user's pupils by the pixel-to-millimetre ratio calculated previously.

A head-mounted device may include optical assemblies for presenting images to a user. Optical assembly positioning systems may be used to adjust the spacing between the optical assemblies to accommodate different interpupillary distances. The optical assembly positioning systems may have motors, shafts rotated by the motors, nuts that receive the shafts and that are moved as the shafts are rotated, and clutches that couple the nuts to the optical assemblies. The clutches may be spring-loaded clutches, magnetic clutches, electrically adjustable clutches, clutches that exhibit fixed clutch holding forces as a function of optical assembly position, and clutches that exhibit varying clutch holding forces as a function of optical assembly position. Electrically adjustable brakes may be used to help secure the optical assemblies in place.

A headset includes an optical assembly, an adjustment assembly, and a measurement component. The measurement component is configured to measure an interpupillary distance provided by an adjustment assembly in a first direction and an eye relief distance provided by the adjustment assembly in a second direction, where the first direction is orthogonal to the second direction. The measurement component includes a first rheostat configured to measure the interpupillary distance and a second rheostat configured to measure the eye relief distance, wherein the second rheostat is placed parallel to the first rheostat. The measurement component further includes a linkage configured to translate a motion of the adjustment assembly in the second direction to the first direction.

A method includes determining that an inter-pupil distance (IPD) between display lenses of a video perspective (VST) augmented reality (XR) device has been adjusted relative to a default IPD. The method further includes obtaining an image captured using a perspective camera of the VST XR device. The perspective camera is configured to capture an image of a three-dimensional (3D) scene. The method further includes transforming the image according to a change in the IPD relative to the default IPD to match a viewpoint of a corresponding one of the display lenses to generate a transformed image. The method further includes correcting distortion in the transformed image based on one or more lens distortion coefficients corresponding to the change in the IPD to generate a corrected image. Further, the method includes initiating presentation of the corrected image on a display panel of the VST XR device.

The utility model provides an interpupillary distance adjusting structure and multi-view observation equipment. The interpupillary distance adjusting structure comprises a bridge body. And the bridge connecting piece is used for rotatably connecting a lens cone assembly to the bridge body, and the bridge connecting piece is provided with an insertion part. The limiting adjusting assembly comprises a clamping plate connecting piece and a rotary adjusting piece, the bridge connecting piece is connected with the bridge body through the clamping plate connecting piece, a containing hole is formed in the clamping plate connecting piece, the rotary adjusting piece is rotatably arranged on the inserting part in a sleeving mode, and an assembling face between the rotary adjusting piece and the inserting part comprises an inclined face; the rotary adjusting part is rotatably arranged in the containing hole, a limiting structure is arranged between the inner circumferential face of the containing hole and the outer circumferential face of the rotary adjusting part, and the limiting structure is used for limiting the rotation limit range of the rotary adjusting part in the containing hole.

Provided is an augmented reality device including a variable focus lens, an eye tracking sensor configured to emit light to eyes of a user, receive the light reflected by the eyes of the user, and detect a plurality of feature points based on the light reflected by the eyes of the user, and at least one processor configured to obtain information with respect to eye relief, which is a distance between the eyes of the user and the variable focus lens, based on position information of the plurality of feature points detected by the eye tracking sensor, obtain information with respect to a gaze point at which gaze directions of the eyes of the user converge, and an interpupillary distance of the eyes of the user, based on the plurality of feature points, and determine a position of a focal region of the variable focus lens based on the information with respect to the eye relief, the gaze point, and the interpupillary distance.

An optical location of camera(s) relative to a display area of a multiscopic display is detected or retrieved. Another optical location is selected, the another optical location being offset from the optical location of the camera(s) by a given angular interpupillary distance. An estimated pitch of a multiscopic optical element is selected. A first image and a second image are obtained, wherein the first image has first colour(s), and the second image has second colour(s) being different from the first colour(s). A multiscopic image is generated, based on the estimated pitch. The multiscopic image is displayed, whilst capturing image(s) of the display area. A correct pitch of the multiscopic optical element is determined, based on an interference pattern represented in the image(s).

This invention discloses a head-mounted display device, relating to the field of smart wearable technology. The head-mounted display device includes a housing, two optical modules, and an adjustment assembly. A receiving cavity is formed within the housing. The two optical modules are spaced apart in the left-right direction and movably mounted within the receiving cavity. Each optical module includes a lens barrel, and each lens barrel has a lens. The adjustment assembly extends laterally on the side of the two lens barrels away from the lenses. The adjustment assembly includes an adjustment body, a clutch structure, and a first and second mating structures corresponding to each optical module and arranged in the front-back direction. When adjusting the interpupillary distance, the clutch structure controls the first mating structure to engage with the adjustment body and the second mating structure to disengage from the adjustment body. When adjusting the focal length, the clutch structure controls the second mating structure to engage with the adjustment body and the first mating structure to disengage from the adjustment body. The technical solution provided by this invention simultaneously achieves the adjustment of both the interpupillary distance and the focal length of the head-mounted display device.

The utility model discloses a handheld observation device which is applied to the technical field of optical equipment. The handheld observation device comprises two monocular observation assemblies and a connecting structure, and the two monocular observation assemblies are arranged side by side in the first direction; each monocular observation assembly comprises a main body and an eyepiece, the main body extends along a second direction, the second direction is different from the first direction, and the eyepiece is arranged at one end of the main body along the second direction; the connecting structure is located between the two monocular observation assemblies, and the two monocular observation assemblies are detachably connected through the connecting structure, so that the two monocular observation assemblies form the binocular handheld observation equipment; the at least one monocular observation assembly can move in the first direction relative to the connecting structure so as to adjust the interpupillary distance between the two eyepieces. The handheld observation equipment is flexible and convenient to use, can realize the adjustment of the interpupillary distance between the two eyepieces so as to adapt to the use requirements of different interpupillary distances, and is flexible and convenient to use and good in applicability.

The invention discloses an interactive naked-eye 3D scene dynamic adaptive construction method of a cross-scale model, and relates to the technical field of civil engineering BIM + GIS. According to the method, a dynamic three-dimensional scene is constructed based on multi-source BIM + GIS data; adjusting the position and attitude parameters of the main camera according to the observer position; calculating the position and attitude parameters of the slave camera according to the interpupillary distance of the observer; according to the dynamically changing scene, calculating visual cone parameters of the master and slave cameras in real time; then, a viewport picture of the main camera is calculated based on forward perspective projection, a viewport picture of the slave camera is calculated based on oblique perspective projection, self-adaption is carried out on display equipment, a multi-viewport image is synthesized, picture interweaving is carried out, the picture is input into a naked eye 3D display screen, and real-time and multi-angle picture three-dimensional presentation is carried out through a real and three-dimensional BIM + GIS three-dimensional scene. Interactive camera operation and scene modification and re-rendering are supported, and the effect of intelligent design and intelligent construction result visualization is remarkably improved.

A head-mountable device can provide a thermal mitigation system that effectively manages heat while also allowing adjustment of optical modules to accommodate particular users. For a given interpupillary distance to accommodate a user, different heat sinks can be provided with optimized fin patterns, lengths, or shapes. Other mechanisms for managing airflow, such as intake modules, can be provided with custom or adjustable characteristics to achieve different airflow patterns and thereby accommodate movement of the optical modules. Such customization and / or adjustability of thermal mitigations by can allow users to experience optimal performance from temperature-sensitive modules such as displays, cameras, sensors, circuitry, and the like.

The application relates to the field of optical imaging equipment, in particular to optical imaging equipment for multiple users and an image generation method. The optical imaging equipment comprises a server and multiple head-mounted devices, the head-mounted device comprises a display screen, two groups of optical lenses and a fixing mechanism, and the server is provided with an information input unit and an image generation system. With the development of VR technology, more and more fields apply VR technology to stereoscopic display of scenes. In public scenes such as meteorological museums, there are usually many users, and if an image rendering system is equipped for each user, the cost will be greatly increased. The multiple-user optical imaging equipment and the image generation method can realize the image generation requirement of a large number of users by using only one or several image generation systems, and the image can be adjusted for users with different interpupillary distances, so that the image generation quality is ensured and the cost is greatly reduced.

The invention relates to the technical field of night vision devices, and provides a left and right eye switching device of a monocular night vision device, which comprises a head cover, and a bracket is detachably mounted on one side of the head cover. According to the invention, the screw rod is rotated by hand to move towards the outer side, the state of abutting against the U-shaped strip is released, then the movable block is pushed by hand to slide towards one side along the outer surface of the U-shaped strip, the pointers are moved to a proper position, and the distance between the two pointers can be observed by observing the scale marks, so that the distance is the same as the pupil distance of a user. Under the action of a limiting strip, a strip-shaped block can be prevented from rotating upwards reversely, so that a sliding block can be kept at a fixed position, the left-right moving distance of the monocular night vision device body can be properly adjusted according to different interpupillary distances of users, it can be guaranteed that the eyes of the users are aligned with an observation opening of the monocular night vision device body, and the user experience is improved. Therefore, the observation effect of the user is improved.

The present invention relates to the technical field of microscopes, and in particular to a solid microscope comprising an eyepiece, an interpupillary distance adjustment component, an optical hinge group, a prism steering group, a distributed reflective optical path component, and a continuously variable magnification objective lens group; the distributed reflective optical path component comprises a negative lens group, a positive lens, a negative lens, and a positive lens group; the negative lens group is arranged between the prism steering group and the continuously variable magnification objective lens group, the positive lens is arranged between the optical hinge group and the prism steering group, and both the negative lens and the positive lens group are arranged between right-angle prisms in the optical hinge group; by sequentially arranging the negative lens group, the positive lens, the negative lens, and the positive lens group between various components of the solid microscope, thereby combining the mechanical structure spatial layout, adjusting the light beam aperture, reducing the interception of the light beam by the prism, and reducing off-axis vignetting, thereby solving the technical problem in the prior art that the solid microscope has large off-axis vignetting and poor imaging quality due to the light path passing through multiple prism groups, and meeting the overall imaging requirements.

A manipulation assistance unit that functions as a gaze detection apparatus includes: an interpupillary distance detector that detects an interpupillary distance of a driver, who is a target person; and a gaze detector that detects a gaze position of the driver, wherein the gaze detector includes a gaze change determiner that determines that, if the gaze change determiner detects an eye movement involving two occurrences of change in the interpupillary distance within a predefined time period, the change in the interpupillary distance being equal to or greater than a predefined amount, a change has occurred in the gaze position of the driver, the change in the gaze position involving a change in viewing distance.

Systems and methods of detecting pupillary positions on a head of a subject are described. While a camera and a light source are positioned in front of the head of the subject, the camera is caused to capture image data representative of a frontal portion of the head of the subject. From the image data, a face of the subject is detected. Up to two eyes are identified from the detected face. A reflection of the light source on each identified eye is detected. A pupillary position of each identified eye is estimated based on a position of the detected light source reflection on the identified eye. One or more of interpupillary distance, left pupil distance, and right pupil distance may be determined from the estimated pupillary positions.

Embodiments of the present disclosure provide VR glasses including a bracket body, a first mounting hole and a second mounting hole, and a first lens module and a second lens module respectively mounted in the first mounting hole and the second mounting hole. The VR glasses include a driving module. The driving module includes a frame fixed to the bracket body, a driving unit fixed to one side of the frame, a gear member rotatably disposed in the frame and torque-transmissively connected to the driving unit, a first rack meshed with the gear member, and a second rack meshed with the gear member. The VR glasses can automatically and synchronously adjust the interpupillary distance, and has high adjustment accuracy, small volume occupation, high driving efficiency, high reliability, and good user experience.

An optical module for a head-mounted device is configured to present content to a user. The optical module includes a housing, a first optical module disposed in the housing, and a second optical module disposed in the housing. The optical module includes an interpupillary distance adjustment assembly including supports coupled to the housing and configured to guide motion of the first optical module and the second optical module with respect to the housing to allow adjustment of a distance between the first optical module and the second optical module. The optical axes of the first optical module and the second optical module extend generally in a front-to-back direction of the housing. Motion axes of the supports extend generally in a side-to-side direction of the housing.

This utility model discloses an adjustable pupillary distance clip-on eyeglasses lens suitable for clinical optometry, comprising a frame and a replaceable lens body. The frame has a clamping part; the frame includes a frame beam, which is hollow inside and contains a first magnet, the length of which is less than the length of the frame beam. The bottom of the frame beam is flat, and the first magnet has an adjustment slider for adjusting the position of the first magnet inside the frame beam; the replaceable lens body includes a frame beam, which contains a second magnet, which is cylindrical and can rotate around an axis inside the frame beam; a lens is fixedly mounted on the bottom surface of the frame beam, and the top of the frame beam is a flat surface that matches the bottom of the frame beam. This solution allows people with moderate to high myopia, hyperopia, and astigmatism who need different prescriptions for near and far vision to conveniently clip an additional near lens onto their existing lenses while wearing their original eyeglasses, and the pupillary distance can be adjusted to suit different people.

Methods for selecting pairs of cameras in a multicamera array configured to image a scene to generate stereoscopic views, and associated systems and devices, are disclosed herein. In some embodiments, a representative method includes selecting a pair of cameras in the multicamera array from which to generate a stereoscopic view, and receiving images of the scene from the selected pair of the cameras. The method further includes cropping the images based on a known calibration of the cameras and a desired disparity, and displaying the cropped images on a display device to generate the stereoscopic view. The desired disparity can correspond to an interpupillary distance of a user.

A system performs an interpupillary distance estimation method, which includes capturing a plurality of depth images of a user's face where each depth image comprises a 2D image and a 2D map of data representative of the distances of each pixel from an observation point. For each of the captured depth images, the system processes the captured depth image by correcting the alignment between the 2D map of data and the 2D image, locates two first marker points corresponding to the pupils on the 2D image, and obtains the spatial coordinates in metric units of the first marker points from the 2D data map. The system further determines an initial estimate of the interpupillary distance by calculating the distance between the first marker points, determines a second estimate of the interpupillary distance, and calculates the final estimate of the interpupillary distance based on the first estimates or the second estimates.

Images of a user's face are captured at a plurality of time instants. Tracking parameters are determined, tracking parameters include: a pose of the user's head, positions of eyeballs, and at least one of: relative positions of irises with respect to boundaries of the eyeballs, relative positions of irises with respect to corners, shapes of the user's eyes. Uncalibrated gaze vectors of the user's eyes are estimated. A set of uncalibrated gaze vectors is generated. The uncalibrated gaze vectors of thset are stored along with corresponding time instants and tracking parameters. A first subset of uncalibrated gaze vectors whose direction matches with a predefined forward axis of vision, is selected. For the uncalibrated gaze vectors, corresponding tracking parameters are fetched. A maximum distance between the irises is determined. The maximum distance is considered as an interpupillary distance.

The invention belongs to the technical field of visual light equipment, and relates to a night visual function tester which comprises a shell and a controller, a dioptric lens and a display screen are arranged in the shell, two groups of holes are formed in the rear side of the shell, the display screen is arranged between the holes and the dioptric lens, and a compression motor is arranged on the inner side wall of the shell. The output end of the compression motor is connected with the refraction lens, eye movement tracking modules are arranged at the two ends of the front side of the shell correspondingly, and the compression motor, the display screen and the eye movement tracking modules are all electrically connected with the controller. Through forward and backward movement of the dioptric lens, the imaging distance can be adjusted from 0.1 m to infinity, and the night vision function testing device is suitable for night vision function testing of different myopic people; a Micro-oled display screen is adopted, so that the adjustment of the brightness of eyes from 0 to 3000nit is realized; the distance between the two dioptric lenses is adjusted through the interpupillary distance adjusting module, so that the centers of the dioptric lenses are accurately aligned with the pupil center of a testee, and the accuracy of a test result is improved.

The present application provides a convergence distance adjustment method and apparatus for a smart wearable device, a device, and a medium. The method comprises: calculating a first convergence distance on the basis of a first interpupillary distance of a target user to achieve customized convergence distance calculation; calculating a convergence distance adjustment amount on the basis of a current scene depth, a current parallax of the target user, and a second interpupillary distance; and performing a convergence distance adjustment on the smart wearable device, such that a display position of a target display object matches a viewing distance of the target user.

System and associated methods of use for rapid assessment of visual field integrity. In one embodiment, the device comprises a frame that rests near a patient's eyes with pinpoint lights or mechanical stimuli that act as visual stimuli mounted at locations within the frame and in the patient's peripheral visual field. A vantage point in front of the frame allows an operator to view the patient's eyes during assessment, enabling the operator to maximize the accuracy during both in person and telemedicine assessments. The lights or mechanical stimuli are positioned such that they are visible to patients with a wide range of interpupillary distances, enabling the use of a single-size device for all patients.