64 results about "Vision table" patented technology

The invention discloses handhold equipment for inspecting vision and a method. The handhold equipment for inspecting the vision comprises a storage device, a display device, a first instruction receiving device, a second instruction receiving device and a control device, wherein the storage device is used for storing a vision table and a corresponding relation of display size of a vision icon element in the vision table and an arm length value; the first instruction receiving device is used for receiving the arm length value input by a user and selection of the user to the vision icon element; the second instruction receiving device is used for receiving feedback information of the user, wherein the feedback information is the description to the selected vision icon element; and the control device is used for calling the corresponding vision table according to the arm length value to display on the display device, and comparing the feedback information with the selected vision icon element to obtain a vision inspection result. By adopting the handhold equipment, the trouble of testing in a hospital or an eyeglasses store is eliminated, so that a user can conveniently test vision anytime.

The invention discloses a handheld vision detecting device which at least comprises an imaging lens set and a vision chart, wherein the imaging lens set is composed of at least one imaging lens. The cornea of a detected person can be located at the position of the focus on one side of the imaging lens set, the center of the vision chart is arranged on the other side of the imaging lens set, and the vision chart can move in a front-and-back mode along a light path. The invention further discloses a vision detecting method and the steps which can measure various visions with the handheld vision detecting device without wearing glasses. By means of the device, the functions that the naked eye vision is measured, the corrected vision is measured, the worn-glass degree are measured when the corrected vision achieves 1.0, the low vision and the weak vision are detected, and the astigmatism is detected can be achieved. By means of the handheld vision detecting device and the vision detecting method, users can detect the vision at any time and any place, the detecting results are accurate, and the operation is conveniently and easily achieved.

The invention discloses a method for detecting the vision of an infant. The method comprises the following steps of A, setting system parameters, wherein the system parameters comprise an initial detection vision value, the distance from a display to the infant, the time interval of changing the position of a pattern for one time and the test times of each vision value; B, drawing the attention of the infant; C, displaying an infant selective watching chart on an image display, wherein the selective watching chart is formed by vision test bar grating patterns and a grey background, and the width of each bar grate corresponds to one vision value in the international standard vision chart; D, changing the positions of the bar grating patterns in the selective watching chart; testing each vision value according to the test times set in the step A; E, adjusting a next test vision value according a test result in the step D until a highest vision value is detected. According to the method disclosed by the invention, the selective watching capacity of the infant can be objectively, effectively, conveniently and automatically identified.

A visual acuity chart displaying apparatus, which is thin, has many indexes, including minutely small index. It includes a first index indicating mode for illuminating the film member having indexes from the rear lighting the liquid crystal display device, and a second mode for retreating the film member from the position located in front of the liquid crystal device and displaying the index pattern on the liquid crystal display device to project the index or index pattern on the eye to be examined, and a mode switching control unit of the CPU to switch between the first and second mode.

The invention discloses a VR technology-based visual chart projection method and a visual chart projector for VR eyeglasses and belongs to the technical field of optometry. The visual chart projection method comprises the steps of (a) building a universal international visual chart library in a VR system; (2) building a function relation between each visual chart and the distance projected to a VR display screen, and projecting the visual charts on the VR display screen in a form of a slide; (c) numbering various visual charts in the VR system, and marking and controlling the visual chart play state and playback speed; (d) building a plurality of feedback options for each visual chart in a form of a weighted choice question; (e) further making weighted statistic analysis according to the choice of a user in the step (d), and finally balancing the integrated test vision of the user in an overall scoring form; and (f) outputting and storing a detection report. The method is simple, feasible, reliable and stable, and the visual chart projector is lightweight, convenient, low in cost and convenient to carry.

The invention discloses an eyesight testing method and device, electronic equipment and a computer storage medium. The method comprises the steps of measuring the test distance between an examinee anda vision test card case; according to the test distance, adjusting the display size of a vision test card displayed in the vision test card case; through the adjusted vision test card, testing the eyesight of the examinee, and obtaining the eyesight value of the examinee. In this way, the eyesight testing process is not affected by a site, even when the site cannot meet the requirement for a standard distance, the eyesight still can be accurately tested, and great convenience is brought.

The invention discloses an infant sighting mark identification ability and color reaction tendency evaluation system and method. According to the development feature of visual perception ability of infants ranging from 3 years old to 5 years old, a psychophysics research method is applied, and corresponding theoretical assumptions and deductive reasoning conclusions are proposed. On this basis, through multi-factor mixed experimental design, an interactive touch-control integrated machine and a global standardized psychological experiment are adopted to generate system software E-Prime 2.0 to serve as a test platform, and the sighting mark identification ability and color reaction tendency evaluation system and method suitable for being used by infants is provided to verify and analyze the theoretical background assumptions and the deductive reasoning conclusions of the theoretical background assumptions, so that the visual chart sighting marks, ideal background setting parameters and the best limiting time for vision examination of a single sighting mark which are recommended to be used for the infants ranging from 3 years old to 5 years old, the reliability and efficiency of visual chart vision measurement of the infants ranging from 3 years old to 5 years old are improved, and the abnormal vision screening effect is improved.

The invention provides a detecting device for testing the eyesight of human eyes and for detecting color blindness. The device comprises a control mainframe, a test information display screen, a keypad at an input end, and a supervisory computer at an output end or another display screen which can display and record a testing result. In the detecting device, a fixedly printed visual testing chart is replaced by the test information display screen controlled by a single-chip; and the test information display screen can random display multi-directional letter ''E'' or ''C'' and pictures of different colors, so as to instantly test the human eyes. The detection is judged automatically by the single-chip, the result is displayed or printed, and the eyesight and the color discrimination ability of a testee are faithfully and objectively recorded. The detecting device can not only save work force, but also effectively avoid the disadvantage of false testing result, and is convenient for the computerized management of physical-examination materials. Therefore, the device is a safe, reliable, and effective detecting device for testing the eyesight of human eyes and for detecting color blindness.

The invention discloses an online optometry system and method, wherein the system includes a mobile client, a display device, and an optometry server, wherein the optometry server is used to provide optometry test information to the display device, according to the mobile client Reply information to adjust the size of the optometry target in the optometry test information output by the display device of the optometry center, and send the optometry result to the mobile client of the optometry center according to the reply information of the mobile client user of the optometry center after adjusting the size of the target. The test information includes an association relationship between the optometry test and its test information, wherein the test information includes an optometry chart and / or question-and-answer information. The present invention can realize optometry only through a display device and a mobile terminal, which is simple and easy, and the user does not need to go to an optical shop or a hospital for optometry, so that the optometry efficiency is high and the user experience is good.

The invention discloses a vision measurement table, which comprises a box body and a vision testing chart, wherein the box body is of a rectangular structure; the box body is about 5cm thick; a lighting source is arranged in the box body; the vision testing chart is arranged on the surface of the box body; and the vision testing chart has 14 rows of sighting targets in all, wherein 9 sighting targets are respectively arranged in each row from the first row to the 11th row, 7 sighting targets are arranged on the 12th row, 3 sighting targets are arranged on the 13th row, 1 sighting target is arranged on the 14th row, the sighting targets of all rows are symmetrically and regularly arranged up and down, and all the sighting targets are stereoscopically and uniformly distributed from big to small. Due to adoption of the embodiment of the invention, the vision testing charge which is more accurate to detect, wider to apply, more scientific to design and more accordant with human vision physiological reaction can be obtained.

The general type visual chart has several rows of visual marks arranged from top to bottom with large ones in the top side. Each row has 4 or 4n visual marks in different directions, including upwards, downwards, rightwards and leftwards, separately, with n being integral number. In addition, astigmatism detecting chart and myopia and hyperopia detecting chart may be also provided simultaneously for expanding the functions.

The invention discloses an intelligent vision testing system. The intelligent vision testing system comprises an input unit, a storage unit, a distance sensor, a processing unit and a data server, wherein the processing unit is connected with the input unit, the storage unit, a display unit and the distance sensor; the data server is connected with the display unit and the processing unit. According to the intelligent vision testing system, the detection answer information of a tested person is analyzed, the analysis result is transmitted to the display unit or printed, and if the information entry of the tested person is not the first time, the data server compares the current detection answer of the tested person with the last-time detection result, analyzes, and transmits the analysis result to the display unit or prints the analysis result. According to the intelligent vision testing system, the data analysis result is available, and the analysis result obtained by tracking the vision change of the tested person is also available, meanwhile, the tested person does not need to stand at a position with the fixed distance away from a visual chart for testing, the intelligent vision testing system can carry out the testing with the distance between the tested person and the visual chart changing aiming at the tested hyperopia and myopia persons, and the accuracy of the testing result is improved.

The invention discloses a vision detecting device with replaceable visual charts, comprising a box body, a visual chart, a standby visual chart, a lighting device, a driving shaft, a transmission shaft and a driving device, wherein the visual chart and the standby visual chart are arranged in the box body and wound into a closed ring through a rolling shaft; the driving device is connected with the rolling shaft; and the visual chart and the standby visual chart are mutually switched under the drive of the rolling shaft. The vision detecting device has the beneficial effects that different visual charts can be freely switched, the condition that a testee remembers the contents of the visual charts in advance is stopped, and the fairness of visual test is improved.

The invention discloses a vision training instrument capable of being automatically operated. The vision training instrument comprises a base, a vision cylinder, a second rotary shaft, a stool, an operating panel and a screw rod; a vision table is arranged on the outer cylinder face of the vision cylinder; the screw rod is located above the vision cylinder, the outer periphery of a rod body of thescrew rod is sleeved with a screw rod sleeve matched with the screw rod, a connecting rod is fixed to the bottom of the screw rod sleeve, an indicating block is arranged at the end of the connectingrod, and a camera is installed at the side, close to the vision cylinder, of the indicating block; the stool is movably arranged in the center of the top of the base, and the stool is located at the front side of the vision cylinder. The vision training instrument is simple in structure and convenient to operate, during use, the eye muscle can be fully exercised, the vision fatigue is relieved, the development of visual central cells is activated, the retina cone is strengthened, and the vision effect is improved; meanwhile, in the using process, the instrument is completely operated by a userhimself / herself, so that passive treatment is changed into active treatment, the training enthusiasm of the user is motivated, and therefore the vision training effect is improved.

The invention relates to a vision testing device, and in particular relates to a protection type vision testing device for the ophtalmology department. The invention aims at providing the protection type vision testing device for the ophtalmology department, which can protect a visual chart and can maintain the cleanliness of the visual chart. In order to solve the technical problems, the following technical scheme is adopted: the protection type vision testing device for the ophtalmology department comprises a mounting frame, a mounting plate, first bearing blocks, first rotation rods, rolling barrels, shielding cloth, the visual chart, belt pulleys, a flat belt, a glass plate, a worm wheel, a second bearing block and the like, wherein the mounting plate is arranged on the top of the mounting frame, the first bearing blocks are arranged on the left and right sides of the mounting plate, the first rotation rods are mounted in the first bearing blocks on the left and right sides, and the rolling barrels are connected to the middle parts of the first rotation rods. With the protection type vision testing device for the ophtalmology department, the effects that the visual chart is protected and the cleanliness of the visual chart is maintained are achieved, through the rolling barrels, the visual chart can be folded and unfolded freely, and thus the effect of protecting the visualchart is achieved.

The invention discloses an automatic eyesight tester. After a registered user logs in, a national standard visual chart is displayed on a display screen by software, a character indication identifier is appointed to a character of a corresponding eyesight level row of the national standard visual chart according to historical eyesight data of a current testee or eyesight data input by the testee at present, or the character indication identifier is randomly appointed to a character of one row of the national standard visual chart by the software; the direction, input by a current user through a remote control or voice, of a current visual chart character is compared with a real direction of a corresponding visual chart character by the software, and testing data are stored; after two eyes of the current user are completely tested, testing results are output by the software through a display screen and / or voice, and a dialog box asking the user whether to print the testing result data or not can be propped out via the display screen; furthermore, the testing result data of the current user are transmitted to a cloud storage server through a communication module.

The invention relates to an eyesight testing device, and in particular relates to a self-service eyesight testing device. The invention aims at providing the self-service eyesight testing device whichcan prevent the ache of the arms and alleviate the labor intensity. The technical scheme is as follows: the self-service eyesight testing device comprises a left support base, a mounting frame, bearing blocks, rotation rods, rollers, a visual chart, a connecting block, an outer ratchet wheel, an inner ratchet wheel, an annular plate, a flexible catch pawl, a swing catch pawl and the like, whereinthe mounting frame is connected to the top of the left support base, the bearing blocks are mounted on the front and rear sides of the upper part in the mounting frame, the bearing blocks are also mounted on the front and rear sides of he lower part in the mounting frame, and the rotation rods are connected between the front and rear bearing blocks. For the device provided by the invention, a swing rod is downwards moved by hands, then the visual chart rotates clockwise, eyesight testing then can be carried out by observing a plane mirror, liftable rods move vertically for enabling eye-shielding plates to move vertically, and therefore, people do not need to cover the eyes by hands for eyesight testing.

A remotely controlled lest chart is composed of a test chart case with test chart, infrared receiver, LEDs for all signs (one for one), received signal converter, loudspeaker and light source, and a remote controller consisting of encoder, infrared emitter and keys. Said LED is a bichromatic one, so it can also test color amblyopia.

The invention belongs to the technical field of semiconductor lighting devices, and specifically relates to a visual acuity test system with adjustable lighting spectrum, which is characterized in that it is an eye chart light box with adjustable lighting spectrum, an enclosure structure with blackened inner surface, lighting lamps, and a spectral illuminance meter and control devices; the lighting source of the eye chart light box and the lighting fixtures of the enclosure structure include LED packaging devices whose spectrum can be changed synchronously; the vision testing system with adjustable illumination spectrum, people test their vision in the enclosure structure, and at the same time Adjust the spectrum of the eye chart light source and the ground lighting lamps, test the eyesight of the subjects, and study the influence of the lighting spectrum on the resolution of small targets on the road; asynchronously adjust the power of the eye chart light source and the ground lighting source, thereby changing the vertical illuminance and The horizontal illuminance of the ground is used to study the influence of illuminance on the visibility of small targets on the road.

The invention provides an eyesight testing device and method and relates to the field of eyesight testing. The eyesight testing device and method has the advantages that the horizontal distance between a testee and a visual chart can be precisely calculated through an ultrasonic emission device, a first ultrasonic receiver, a second ultrasonic receiver and a central processing unit, and the testeecan be reminded to adjust the distance through the voice of a voice module until the distance meets the requirements of testing standards so as to guarantee the accuracy of the testing result; the height difference between a horizontal plane where the testee is located and the horizontal plane where the visual marks on the 1.0 row are located can be precisely calculated through the ultrasonic emission device, the first ultrasonic receiver, the second ultrasonic receiver and the central processing unit, a controller regulates a stepping motor to drive the visual chart to move upwards and downwards to guarantee the horizontal plane where the testee is located and the horizontal plane where the visual marks on the 1.0 row are located are on the same horizontal plane to meet the requirementsof the testing standards so as to guarantee the accuracy of the testing result; the testing result can be transmitted by the central processing unit to the mobile phone of the testee through Bluetooth, saved into a storage and compared with the subsequent testing results of the testee to judge whether the eyesight changes or not.

The invention discloses a vision detecting method, device and system based on a VR technology, and a storage medium. The vision detecting method comprises the steps that responding to a starting instruction input by a user, a preset image is displayed in a preset display area, and the eye image of the user is collected; the sight direction in the eye image is obtained and matched with the preset direction, and according to the matched result, whether the user is in an eye fatigue state or not is judged; and when the user is not in the eye fatigue state, a preset virtual vision table is projected in the preset display area, and the vision detected result of the user is obtained according to feedback information of the user to the preset virtual vision table. By judging whether the user is in the eye fatigue state or not before vision detecting, the error of vision detecting under the eye fatigue state is avoided, and the accuracy of vision detecting is improved; and the vision of the user is detected through the VR technology, site limitation is avoided, and the user experience is high.

The invention discloses a method and system for detecting vision by using an image technology and cloud control technology, the method comprises the following steps of: running an application for vision detection on a cloud device and generating corresponding cloud content, transmitting the content to two-dimensional (2D) devices and three-dimensional (3D) devices (including a television, a computer, a mobile phone, a tablet, a projector, VRBOX, VR, AR, a cinema and the like); and completing the vision detection according to the cloud content generated by the cloud device; wherein the cloud content is a cloud graphic image generated by the cloud device, according to the cloud graphic image, the functions of a single, a single line and a single column sighting marks of a variety of sightingmarks (including a sighting mark C, a sighting mark E, a digital sighting mark, a children's graphic comparison sighting mark and a special vision table) and the detection functions related to various vision function detection sighting marks or the combination are completed. The invention also discloses a cloud vision detection system. The method can perform the vision detection according to thecloud content, and is simple and practical.

The invention discloses a method for drawing a standard naked-eye E chart. The method comprises following steps of step 1, acquiring pixel point data occupied by a reference standard card on a display through the display of a computer equipped with the eyesight screening software; step 2, calculating to acquire the actual side length of the E chart; step 3, comparing the actual width of an identity card with the actual side length of the E chart to acquire the actual ratio of the E characters; step 4, comparing the pixel width corresponding to the identity card with the actual ratio of the E characters to acquire side length pixels of the E characters; step 5, carrying out pixel side length restriction on an E character vector graph (which is square) drawn in the system; and step 6, displaying images of the E characters. According to the invention, the size of the standard naked-eye E chart is drawn based on the actual object size and computer displays with different resolutions; the size of the standard naked-eye E chart can be equivalently scaled according to the distance value; consistent effects with actual eyesight measurement data are achieved; and accuracy and reliability of the eyesight measurement data are ensured.

The invention discloses an eyesight monitoring method, device and terminal. Current eyesight data is obtained, and an eyesight protection scheme is set according to the eyesight data. According to the technical scheme, the user can know the length of time spending on using a mobile terminal in real time, the user can be timely prompted to pay attention to eye health, and the problem existing in the prior art that the eyesight is detected through professional equipment and a standard visual chart inconveniently is effectively solved.

A system or method for detection of vision problems. The system or method may include one or more of an eye chart, eye patch, reply form, instruction sheet, and reward for returning the reply form. One or more of the eye chart, eye patch, and / or reply form may be packaged together within a single envelope for delivery to a potential user. In order to be effective with individuals that are not well versed in language or numbers, such as infants, children, adults with certain learning disabilities, or others (e.g., adults not fluent in a particular language, such as English), the eye chart may include only graphical elements for visual identification in the vision test by the individual. One or more different eye charts, eye patches or rewards may be provided to a particular user based upon determinations made about the particular user (e.g., age, sex, interests, etc.).

The invention relates to a liquid crystal display multi-function training instrument comprising a display screen, a case, a central control chip and a power switch. The instrument is characterized in that the lightness of the display screen can be adjusted according to that of the surroundings, and an eyesight test button C, a training button A and a training button B are adopted to select different eyesight test charts. The instrument has the advantages that the joy of using the instrument is increased, the attention of young children can be drawn more easily, and the effect of correction can be improved; different processes are selected randomly, and the problem of inaccurate test caused by eyesight test chart memorizing in the process of eyesight test can be avoided during eyesight test; the lightness of the display screen is adjustable and is adjusted according to that of the surroundings, the eyesight correction effect is improved, and the influence of external light is avoided.

The invention relates to a test table, in particular to an ophthalmic vision test table. Therefore, the technical problem of the present invention is to provide an ophthalmic vision test table that enables a patient to see the symbol clearly and has a good test effect. The technical embodiment of the invention is as follows: an ophthalmic visual acuity test table comprises a bottom bracket, a U-shaped bracket, a first bearing, a first shaft, a first reel, a second bearing, a second shaft, a second reel, a first rocker arm, a visual acuity chart and the like. The top of the bottom bracket is connected with a U-shaped bracket, the left and right sides of the U-shaped bracket are provided with sliding grooves, the left side sliding groove left wall and the right side sliding groove right wallare uniformly provided with a plurality of grooves, and the lower parts of the left and right sides of the U-shaped bracket are provided with first bearings. A medical staff grasp that first rocker arm and rotate or reverse the second shaft rod, and the second shaft rod rotates or reverse to drive the second reel to rotate or reverse, thereby driving the visual acuity chart to rotate, so that symbols seen by the patient from the t hole are different in size, and the eyesight of the patient is tested.