CN201987843U - Virtual eye guard - Google Patents

Virtual eye guard Download PDF

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Publication number
CN201987843U
CN201987843U CN2010206198136U CN201020619813U CN201987843U CN 201987843 U CN201987843 U CN 201987843U CN 2010206198136 U CN2010206198136 U CN 2010206198136U CN 201020619813 U CN201020619813 U CN 201020619813U CN 201987843 U CN201987843 U CN 201987843U
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CN
China
Prior art keywords
optical
virtual
eyeshield
mainframe box
lens barrel
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Expired - Fee Related
Application number
CN2010206198136U
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Chinese (zh)
Inventor
邱启仓
王丽萍
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Hangzhou Huatai Medical Science & Technology Co Ltd
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Hangzhou Huatai Medical Science & Technology Co Ltd
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Priority to CN2010206198136U priority Critical patent/CN201987843U/en
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Abstract

The utility model discloses a virtual eye guard, comprising a mainframe box, and an optical observation lens barrel, wherein the mainframe box is connected to the optical observation lens barrel; the optical observation lens barrel is internally equipped with two light paths which are independent and symmetrical; each light path comprises a liquid crystal display (LCD)display screen, an optical system and an observation window; the optical system comprises a convex lens and a plane mirror; an included angle between a light direction of the LCD display screen and the mirror direction of the convex lens is 90 DEG; the intersection part of the light direction of the LCD display screen and the mirror direction of the convex lens is equipped with the plane mirror; the included angles of the plane mirror to the two lights are 45 DEG, respectively; the mainframe box is internally equipped with a control system; the control system comprises two video graphics array (VGA) outputs; and the two VGA outputs are respectively connected to the two LCD display screens. The virtual eye guard provided by the utility model has the advantages that the different stimulating graphs or games can be observed by the eyes through different light paths by separating the visual field of the eyes, the full visual field training by separating the two eyes can be carried out, the therapeutic effect can be improved, and the function for training the amblyopia with visual function without controlling the health eye is carried out.

Description

Virtual eyeshield
[technical field]
This utility model belongs to ophthalmic medical instrument manufacturing technology field, is specifically related to a kind of virtual eyeshield that is used for amblyopia treatment.
[background technology]
Amblyopia is meant that eye does not have organic disease, and simple eye or eyes are corrected defects of vision and do not reached 0.9, and perhaps eyes are corrected defects of vision and differed more than 2 row.Amblyopia belongs to the growth disorder disease, often be attended by symptoms such as stravismus, ametropia, the harm of amblyopia is that not only monocular vision is low, more seriously lack perfect binocular visual function and more high-grade stereoscopic vision function, promptly lack the various object distances of three dimensions, front and back, just, the depth and convexo-concave perception, and this peculiar senior visual function that just is people and higher mammal, amblyopia influences the quality of life that people adapt to modernized society.Look side ways centre of prevention and cure various places findings of the survey at home according to national amblyopia, the prevalence of amblyopia is 3.83%, and stravismus then is about 2.3%.China has 300,000,000 approximately whatever amount virgin, and estimation has 10,000,000 children with amblyopia suddenly to treat diagnosis and treatment approximately.
For many years, from psychology, neuro physiology and electrophysiology aspect, utilize experimental animal model to discover that the visual development process has plastic stage, it is generally acknowledged, the treatment of amblyopia and stravismus and the foundation of stereopsis and age are closely related, age is more little, and curative effect is good more, early treatment and adhere to becoming the key factor that influences the amblyopia curative effect for a long time.
At present, the treatment of amblyopia mainly adopts covering method, medicine to suppress method and vision physiological stimulus therapy etc.After professor Malik of U.S. ophthalmologist oculist has contrasted various therapy, find that the covering method effect is best, vision rises the fastest, and treating method for children's myopia using should at first be selected this method for use.The traditional covering therapy is to hide strong eye by eyeshield, eliminates the inhibition of dominant eye to the amblyopia eye, forces and uses the amblyopia eye to reach the purpose that improves its vision.Yet the drawback of traditional covering therapy is not allowed out in the cold yet: need suppress strong eye owing to hide, make the probability of suffering from occlusion amblyopia increase greatly; The covering process most of the time is used the mono-vision thing, and this has just hindered the growth of child in the eyes function of critical period; Because some improper factor (as when the adult is careless, infant can be taken eyeshield, sees thing in the slot of eyeshield), this not only affects the treatment, and also might cause stravismus.Simultaneously, traditional covering influence is attractive in appearance, and the mental health of infant is brought influence.
[summary of the invention]
This utility model utilizes VR (VirtualReality virtual reality technology) method that presents different pictures to right and left eyes, provide a kind of based on the isolating virtual eyeshield of eyes light path, it is by separating binocular visual field, allow every eyes watch different stimulation figure or recreation by different light paths respectively, reach and separate eyes full visual field training, to improve therapeutic effect, realized the purpose of training amblyopia eye visual function under the situation that does not suppress strong eye.
For realizing above-mentioned functions, the technical scheme that this utility model adopted is: virtual eyeshield, it comprises mainframe box, optical observation lens barrel, mainframe box links to each other with the optical observation lens barrel, establish two independences and symmetrical light path in the optical observation lens barrel, every light path comprises LCD display, optical system and watch window, optical system comprises a convex lens and a plane mirror, the light of LCD display is invested with the convex lens minute surface and is spent towards being 90, both cross parts are settled described plane mirror, and plane mirror is 45 degree with both throw light respectively; Dress control system in the described mainframe box, control system comprise two VGA outputs, and two VGA outputs link with described two LCD displays respectively.
Described virtual eyeshield, two optical systems link to each other by screw mandrel, and optical system and screw mandrel be by being threaded, and the screw mandrel two ends are rotatably assorted with the barrel of optical observation lens barrel respectively, the affixed tube in the outer end of screw mandrel is apart from adjusting knob, and this knob is in outside the optical observation lens barrel.
Described virtual eyeshield, the leading flank of mainframe box are the inclined-plane, settle described operation keyboard on this inclined-plane.
Described virtual eyeshield, mainframe box has outlet.
Described virtual eyeshield, control system comprises external interface module, this external interface module comprises USB interface, Ethernet interface, CF clamping mouth.
Described virtual eyeshield, mainframe box have and CF clamping mouth, Ethernet interface, the suitable socket of USB interface.
Described virtual eyeshield, watch window stretches out outside the optical observation lens barrel.
This utility model has significant effect clinically based on the isolating virtual eyeshield of eyes light path:
1, this utility model utilizes the full visual field amblyopia treatment scheme that virtual reality technology and computer technology provide eyes to carry out interactive training, not needing that strong eye is carried out real eyeshield hides, eliminated the drawback of traditional eyeshield occlusion therapy, compliance to child patient improves greatly, has improved therapeutic effect.
Clinical research is found, utilize VR (VirtualReality virtual reality technology), when not suppressing healthy eyes, the mode by computer game has successfully obtained the effect that will need nearly 400 hours traditional covering mode just can reach in the middle of training in 1 hour.The result shows that the therapeutic effect of the virtual covering that this technology reaches produces effects very rapid.
2, this utility model has designed two independently light paths, utilize the show media of 3.5 inches miniature LCD displays as high-quality image and animation, can can't or be difficult to the difficulty that two eyes provide stimulating image separately thereby overcome regular display for every eyes provide displaying contents separately.
3, this utility model replaces uninteresting traditional covering method to treat by the mode of watching interesting animation fragment or carrying out the VR developmental game, makes the more acceptant treatment of child, improves the enthusiasm of its treatment.
4, this utility model is provided with background data base, make patient's particulars and training process in every index and data can be recorded in real time in the system, be convenient to follow the tracks of patient's treatment process, for it in time adjusts the successive treatment scheme, thereby improve the effect of treatment, reduce the time of treatment.
5, utilize this utility model to treat, its preliminary clinical effectiveness is very good, shortens dramatically than treatment time of traditional covering therapy.
[description of drawings]
Fig. 1 is the contour structures sketch map of the virtual eyeshield of this utility model.
Fig. 2 is the front view of the virtual eyeshield hardware configuration of this utility model.
Fig. 3 is the side view of the virtual eyeshield hardware configuration of this utility model.
Fig. 4 is the vertical view of the virtual eyeshield hardware configuration of this utility model.
Fig. 5 is solid (partly cut-away) figure of the virtual eyeshield hardware configuration of this utility model.
Fig. 6 is light path separation principle figure of the present utility model.
Fig. 7 is system framework figure of the present utility model.
Fig. 8 is a control system module map of the present utility model.
[specific embodiment]
Below in conjunction with accompanying drawing this utility model is elaborated.
Shown in Fig. 1-5, this utility model comprises mainframe box 5, optical observation lens barrel 1 based on the isolating virtual eyeshield of eyes light path, the roughly rectangular trapezoidal shape in the side of mainframe box 5, and it is up-narrow and down-wide, and its side, the place ahead is the inclined-plane, is mounted with operation keyboard 6 on the inclined-plane.The end face of mainframe box 5 is convex, is rotatedly connected between two lugs 4 of the bottom of this protuberance insertion lens barrel 1 and by axle.Establish two light paths that are separated in the lens barrel 1, article two, the independently symmetrical design of light path, every light path comprises LCD display 7, optical system 8 and watch window 3, and LCD display 7, optical system 8 are in the lens barrel 1, and watch window 3 is towards the place ahead and stretch out outside the lens barrel 1.The image of seeing by watch window 3 presents by miniature LCD display 7 demonstrations and through contained optics 8 effects.Two optical systems 8 link to each other by screw mandrel 9, the housing outer wall of optical system 8 fixedly mounts a guide bracket, guide bracket crosses screw mandrel 9, between the two by being threaded, screw mandrel 9 two ends are rotatably assorted with the barrel of lens barrel 1 respectively, and the affixed tube in its outer end is apart from adjusting knob 2, knob 2 is in outside the lens barrel 1, drive the rotation of screw mandrel 9 by turning knob 2, and realize regulating the purpose of tube distance, its adjustable extent is at 45-75mm.
Just can make the patient clearly observe the picture content that shows on the LCD display by optical system, therefore, the optical system quality will directly influence the quality of whole visual observation and stimulating system.During design, by inspection requirements, that patient's eye muscle should be in is loose, eyeball does not have adjustment state, so by normal eye (far point is an infinity) design.Therefore, the light that is arrived patient's eye by the optical system outgoing should be directional light, with the scenery of infinity in simulating nature circle, shows that on the eyepiece focal plane various pictures (being equivalent to the graticle in the optical instrument) replace different scenery.
Two light paths about Fig. 6 has shown, corresponding patient's right and left eyes.Optical system 8 comprises a convex lens and a plane mirror, the light of LCD display 7 display images invest with the convex lens minute surface towards being 90 degree, the cross part of light is settled plane mirror between the two, plane mirror is 45 degree with both light respectively.Plane mirror works the light path of turning back.Iris (can realize by software) unthreaded hole variation in diameter scope is Φ 10~60mm, the patient watches picture by eyepiece, because the required precision of picture is not high, so the aberration to optical system does not have specific (special) requirements, eyepiece only needs aplanasia and distortion, generally adopts the positive convex lens of monolithic can satisfy service condition.
During work up, patient's eyeball position correctness will influence certainty of measurement, and the distance among Fig. 6 between eyeball R and the convex lens minute surface is that center of rotation " O " is to the distance between the eyepiece surface.Show according to statistics: the human eye diameter is about 23~24mm, subglobular, as its spheroid as diameter 24mm is treated, center of rotation is 12mm at the centre of sphere, the centre of sphere to the anterior corneal surface distance just, add Several Factors such as the preceding additional horse thickness of eyelash staple length, brow ridge height and eyepiece, this intersegmental distance is designed to 25mm, the place's important parameter during as instrument design.
The eyes that the present invention is based on miniature display screen separate visual observation and stimulating system and realize virtual eyeshield system, the resolution of its demonstration is 640 * 480, eyes interpupillary distance adjustable extent has assembling and advantage easy to use, that volume is little between 45-75mm.
Dress embedded control system in the mainframe box 5, referring to Fig. 8, embedded control system comprises kernel module, power module, audio-frequency module, input/output module, external interface module and display module, kernel module and power module, audio-frequency module, input/output module, external interface module and display module link, kernel module comprises CPU module, real-time timepiece chip, memory modules, flash memory module, and CPU module and real-time timepiece chip, memory modules, flash memory module link.Power module comprises power management module, power supply input, and power management module and power supply input link; Mainframe box 5 rear sides have AC power interface, and this interface is corresponding with the power supply input of power module, and power management module is provided with on and off switch, and on and off switch is arranged at mainframe box 5 right sides.Audio-frequency module comprises audio driven module, stereo audio output module, and audio driven module and stereo audio output module link.Input/output module comprises I/O driver module, keyboard, and I/O driver module and keyboard 11 link.External interface module comprises USB interface, Ethernet interface, CF clamping mouth.Operation keyboard 6 is settled in mainframe box 5 the place aheads, and mainframe box 5 also has CF clamping mouth, Ethernet interface, USB interface, and these interfaces are corresponding with each mouthful of input/output module respectively.Display module comprises video memory module, two apparent driving, VGA output 1, VGA output 2, the video memory module links with two apparent drivings, two apparent drivings and VGA output 1, VGA output 2 link, and VGA output 1, VGA output 2 link with two LCD displays 7 of optical imagery observation system respectively.
3.5 the resolution of inch LCD display 7 be 640 * 480,16 very color or more than, be connected with control system by the VGA signaling interface, for every eyes provide independently pictorial display; The enlargement ratio of optical system 8 is 1.85 times, realizes the function that full field-of-view image presents by the LCD display content being carried out the optics amplification.
Below in conjunction with Fig. 7 in detail, the operation principle of the virtual eyeshield of this utility model is described in detail.
1, this utility model employing embedded control system is a platform.Hardware aspect selects the ARM core also to design peripheral circuit according to actual needs as control module; The operating system of Windows CE.NET as embedded system is selected in the software aspect, Platform Builder4.2 is as the IDE of Windows CE.NET, Embedded visual c++ 4.0 is an application software development platform, is programming language with C/C++.
2, the pattern imaging mould adopts two display graphics modules, in application program, make the information that should be a width of cloth picture in logic split into two corresponding pictures, by the two display drivers in the hardware circuit, image signals corresponding is sent in the specified display screen, realize that figure separates demonstration.
3, the user utilizes human-machine interface module to operate and interaction, and system generates the data record of essential information and training for each user, and is kept among the data base of system, the tracking that makes things convenient for the user to inquire about and treat situation.
Above-mentioned related software platform, hardware platform and data base can adopt existing techniques in realizing.
Below in conjunction with Fig. 8, be described in further detail the control system of the virtual eyeshield of this utility model.
1, being core with the PXA270 processor, having constituted the kernel module of hardware system in conjunction with clock chip (PCF8563) and internal memory, mainly is that the user only need carry out less expansion just can make up an application system for the user provides abundant equipment interface.
PXA270 processor based on Intel XScale framework, integrated memory element controller, clock and power-supply controller of electric, dma controller, lcd controller, AC97 controller, I2S controller, the fast infrared line peripheral controllers such as (FIR) controller of communicating by letter can be realized the peripheral interface function of enriching.Its low power supply operational mode and dynamic power management technology can effectively reduce the power consumption of power supply.
2, the embedded system pattern process module is supported two the demonstration, disposes two VGA video signal output interfaces, is used for connecting the optical imagery observation system, thereby realizes that two are separated the function of independently looking thing.Module Design is a core with SM501 multimedia harmonizing processor chip mainly, is equipped with the drive circuit module that peripheral circuit has constituted pictorial display.SM501 supports multiple input/output interface, comprises AC97, thereby realizes the processing of audio signal.
3, external expansion module is in order to help the expansion of function, and it has drawn following interface, is respectively: USB interface, 502SPI interface, 100M network interface card interface, CF clamping mouth.
Above-mentioned related each module can adopt prior art to realize.
Enumerate the operating process that a concrete game picture describes the virtual eyeshield of this utility model in detail below:
Native system can be analyzed and manage patient's data, patient's treatment data, can carry out the setting of training time, training method, training parameter etc. to the recreation of virtual eyeshield simultaneously.Suppose to select recreation, according to the training method that has provided, the picture separated into two parts of recreation.Wherein a part is mainly formed (being shown as strong eye pattern sheet) by static information, and another part mainly is made up of multidate information (being shown as amblyopia eye pattern sheet).The left figure i.e. picture of strong eye pattern sheet is made up of background, is mainly static information, and is less to patient's captivation, and it is presented on the pairing LCD display of strong eye; Right figure is that the picture of amblyopia eye pattern sheet is made up of the bubble of different colours, is mainly multidate information, and the patient is had bigger captivation, and it is presented on the pairing LCD display of amblyopia eye.After the observation of patient's eyes, two pictures will merge, and obtain a complete game picture (being shown as the actual picture of experiencing).Like this, utilize two isolating training methods of independent sound, can not only activate the ability of amblyopia eye acknowledge(ment) signal effectively, and avoided the unfavorable factor that absolute inhibition caused of traditional covering therapy strong eye.Since this training method eyes look altogether and coordinate operation in carry out, growth and the recovery especially three-dimensional for the eyes merit have positive effect.
This utility model adopts virtual reality technology, and specific stimulation figure and recreation that design needs utilize the optical fractionation technique system again, separates patient's binocular visual field, and stimulating image can be full of whole visual field simultaneously.Eyes obtain two different particular image of same scene by two LCD displays.Give the strong relatively dull or immobilized image of a width of cloth soon, watch the interesting or dynamic relatively image of a width of cloth to amblyopia, the two-dimensional image information that retina of both eyes obtains, import brain into through pathways for vision, carry out complicated information processing, merge and become piece image, watch attentively, promote eyes to drive the growth of cell and X type ganglionic cell thereby force the amblyopia eye to cause more.This method can also improve the fusion faculty of eyes simultaneously, and training is set up and raising stereoscopic vision perception ability.

Claims (7)

1. virtual eyeshield, it is characterized in that: comprise mainframe box, optical observation lens barrel, mainframe box links to each other with the optical observation lens barrel, establish two independences and symmetrical light path in the optical observation lens barrel, every light path comprises LCD display, optical system and watch window, optical system comprises a convex lens and a plane mirror, the light of LCD display is invested with the convex lens minute surface and is spent towards being 90, both cross parts are settled described plane mirror, and plane mirror is 45 degree with both throw light respectively; Dress control system in the described mainframe box, control system comprise two VGA outputs, and two VGA outputs link with described two LCD displays respectively.
2. virtual eyeshield as claimed in claim 1, it is characterized in that: described two optical systems link to each other by screw mandrel, optical system and screw mandrel are by being threaded, the screw mandrel two ends are rotatably assorted with the barrel of optical observation lens barrel respectively, the affixed tube in the outer end of screw mandrel is apart from adjusting knob, and this knob is in outside the optical observation lens barrel.
3. virtual eyeshield as claimed in claim 1 is characterized in that: the leading flank of described mainframe box is the inclined-plane, settles described operation keyboard on this inclined-plane.
4. as claim 1 or 3 described virtual eyeshields, it is characterized in that: described mainframe box has outlet.
5. virtual eyeshield as claimed in claim 1 is characterized in that: described control system comprises external interface module, and this external interface module comprises USB interface, Ethernet interface, CF clamping mouth.
6. virtual eyeshield as claimed in claim 5 is characterized in that: described mainframe box has and CF clamping mouth, Ethernet interface, the suitable socket of USB interface.
7. virtual eyeshield as claimed in claim 1 or 2 is characterized in that: described watch window stretches out outside the optical observation lens barrel.
CN2010206198136U 2010-11-22 2010-11-22 Virtual eye guard Expired - Fee Related CN201987843U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106265005A (en) * 2016-07-20 2017-01-04 李成新 A kind of Novel ocular health-care appliance and application process
CN107095733A (en) * 2017-04-21 2017-08-29 杭州瑞杰珑科技有限公司 Amblyopia treatment system based on AR technologies
CN111202663A (en) * 2019-12-31 2020-05-29 浙江工业大学 Vision training learning system based on VR technique

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106265005A (en) * 2016-07-20 2017-01-04 李成新 A kind of Novel ocular health-care appliance and application process
CN107095733A (en) * 2017-04-21 2017-08-29 杭州瑞杰珑科技有限公司 Amblyopia treatment system based on AR technologies
CN107095733B (en) * 2017-04-21 2019-10-11 杭州瑞杰珑科技有限公司 Amblyopia treatment system based on AR technology
CN111202663A (en) * 2019-12-31 2020-05-29 浙江工业大学 Vision training learning system based on VR technique

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110928

Termination date: 20181122