CN107260505A - Sight protectio method, device and the VR glasses with eyesight protection function - Google Patents
Sight protectio method, device and the VR glasses with eyesight protection function Download PDFInfo
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- CN107260505A CN107260505A CN201710433933.3A CN201710433933A CN107260505A CN 107260505 A CN107260505 A CN 107260505A CN 201710433933 A CN201710433933 A CN 201710433933A CN 107260505 A CN107260505 A CN 107260505A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H5/00—Exercisers for the eyes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/16—Physical interface with patient
- A61H2201/1602—Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
- A61H2201/1604—Head
- A61H2201/1607—Holding means therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/16—Physical interface with patient
- A61H2201/1602—Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
- A61H2201/165—Wearable interfaces
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/50—Control means thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2205/00—Devices for specific parts of the body
- A61H2205/02—Head
- A61H2205/022—Face
- A61H2205/024—Eyes
Abstract
The present invention provides a kind of sight protectio method, for when user wears virtual reality glasses viewing virtual image, the image space of virtual image to be located in the visual range of user in control virtual reality glasses；And the image space of the virtual image is periodically adjusted, to change the eye muscle state of user, protect eyesight.The present invention also provides a kind of vision protection device, including virtual reality glasses, data determination unit, the visual range for determining user simultaneously；Central control unit, for based on the visual range, producing virtual image image space control signal；Adjustment unit; for according to the virtual image image space control signal from central control unit; the image space of virtual image in virtual reality glasses is controlled to be located in the range of the vision correction; and periodically adjust the image space of the virtual image; to change the eye muscle state of user, eyesight is protected.
Description
【Technical field】
The present invention relates to a kind of method and apparatus for carrying out sight protectio, and a kind of VR with eyesight protection function
Glasses.
【Background technology】
With the rise of virtual reality (Virtual Reality, VR) equipment, occur various types of void on the market at present
Intend Reality glasses, i.e. VR glasses, the VR helmets can also be turned into.The structure of these VR glasses be typically all lens+display screen into
Image space formula.In user at the moment, display location is within the focal range of lens, and the image played on display screen passes through for lens
The optical principle of lens produces exaggerated virtual image so that user can see virtual image by lens.General VR
The position of lens and display screen is fixed in glasses, and the visual range substantially according to the user of twenty-twenty vision is set.But no
Detecting eye diopter with user is different, and visual range is also different.Ametropia patient is just highly difficult using this VR glasses,
They can be because do not see and must not can't bear the pain seen, squinted at strength.And if they have on the ametropia of oneself
Correcting spectacle lens go use VR glasses, then can be extruded because of eye by many objects, sensation feel bad very much.Also have now
It is provided for being adapted to the adjustment unit of diopter on VR glasses, by adjusting the position of display screen or lens in VR glasses, comes
Meet different demands.But different diopters can be whether adapted to, existing VR glasses watch virtual graph in user
All it is virtual image is imaged on fixed image space as during, it is solid at one that this just forces user to stare at for a long time
Positioning is put so that the ciliary muscle of eyes of user keeps tightening state or holding to loosen for a long time, causes muscular fatigue, gently then easy
Cause eyes of user acid is swollen can't bear, it is heavy then permanent damage is caused to eyesight.
For the human eye with twenty-twenty vision, when the light of an actual object (real object) is incident
To crystalline lens (Eye lens), lenticular shape will allow these light focusings and produce retinal images on the retina
(retinal image).The eye structure figure of a twenty-twenty vision as shown in Figure 1.In twenty-twenty vision, a practical object
Can correctly it focus on (i.e. retinal images are produced on the retina).When object proximity eyes are (as worked as reading or seeing smart mobile phone
When), retinal images will be far from crystalline lens and retina.Therefore, object will be considered as fuzzy, now, the ciliary muscle of eyes
(ciliary muscles) can tense so that crystalline lens is convex big immediately, retinal images is fallen on the retina, so that in kind become
Obtain clearly.When object is away from eyes, retinal images move towards crystalline lens and leave retina.Therefore, object will be looked first at
Get up fuzzy, now ciliary muscle loosens to cause lenticular shape to tend to flat, so that retinal images will fall in retina
On, object is apparent from.
Ametropia (Refractive errors), especially near-sighted (nearsightedness) and long sight
(farsightedness), refer to that light can not be directly focused on the retina (retina) of eyes.It is ametropia for those,
Retinal images fail to occur on the retina, and these deviations cause perception of the people to actual object to be fuzzy.As shown in Figure 2
Ametropic eye imaging schematic diagram, wherein Fig. 2 a are myopia, and Fig. 2 b are long sight.
There are main and secondary two backfeed loops in the vision accommodation system of human eye, they can easy adjustment retinal images
Position, so as to correct ametropia.The lenticular shape that primary feedback loop adjusts eyes by ciliary muscle regards to respond
Nethike embrane image deviations.Therefore, fuzzy eyesight can cause ciliary muscle to loosen or tense to control lens shapes, so as to retina
Image falls on the retina.Secondary backfeed loop is by extending or shortening eyeball also responsive to retinal images deviation
The longitudinal axis (longitudinal axis).This will make retinal images close to retina.However, these feedback cycles are eventually led
Cause persistently ametropia occur.
The dynamic change of main and secondary backfeed loop can cause the not positive occurrence and development of permanent refractive.Primary feedback
Loop has a shorter time constant ametropia to correct rapidly.However, loosening for a long time or tightening up ciliary muscle and can subtract
The flexibility of few muscle, the regulating power of ciliary muscle declines, and will cause primary feedback loop is invalid in a very long time.
Secondary backfeed loop has individual longer time constant, and can resist the change of eyesight relatively.When ciliary muscular fatigue,
Retinal images will leave retina for a long time, and now secondary feedback loop plays main function, so as to cause longitudinal direction to extend or contract
Short eyeball.It is ametropia due to the fatigue strength of the relative patience and ciliary muscle that can resist eyesight change in secondary feedback loop
Continue.
At present, two kinds of vision correction products can be used for controlling these ametropia：Glasses and contact lenses.
However, these products can not only treat ametropia, these conditions can be deteriorated on the contrary.As shown in figure 3, two kinds of productions
Product all produce the virtual image (virtual image) of a real-world object using an eyeglass.Connect because virtual image is located at
Close or remote from the distance of real object, the light of virtual image can exist through one retinal images of crystalline lens and establishment
Retina.This will be helpful to the primary feedback loop for making up chronic frustration, but not correct the longitudinal extent of eyeball.In fact,
Eyeglass can cause eyeball longitudinal extent to further offset from normal length.For example, for myopia, correcting lens will create one
Than real object closer to dummy object (real object), it is clear to see effectively to make real-world object close to eyes.This
Compensation allows patient to have normal range of vision by the way that artificially the object of distant place is furthered.However, when patient watches those
Than by correcting lens have more clearly visibility close to object when, correcting lens can pull closer these objects.Cause
And cause ciliary muscle more nervous and effect of loss primary feedback circulation will be accelerated, cause to be increasingly dependent on secondary feedback time
Road, so as to further extend eyeball.Therefore, the origin distortion of eyeball is not to be repaired but deepen.This can stimulate myopia
Degree deepen, the range of vision of patient will slowly reduce prescription glasses and contact lenses, it is necessary to the higher number of degrees.Existing skill
Art is there is also many focal length contact lenses or many focus spectacles, and general user is the elderly of myopia and long sight simultaneously.So
And likewise, these glasses are because unnecessarily make ciliary muscle too loosen or nervous so as to the myopia and the journey of long sight that can aggravate
Degree.Obviously, the most popular correcting vision method of above two can not cure ametropia, may deepen disease development on the contrary.
There are two kinds of vision correction modes, lasik surgery (LASIK (Laser Assisted in addition
In-situ Keratomi)) and orthokeratology (orthokeratology, Ortho-K), it is desirable to provide long-term correction is bent
Light is not just.However, the failure in primary feedback loop that these methods only compensate identical with the mode of aforementioned corrected eyeglass, without
Consider the long-term damage to the longitudinal extent of eyeball.And both approaches all directly manipulate eyes in the way of relative invade
, there is risk in lens shapes.
These enabled productions of the prior art can only be passive correction, force the muscle of eyes to be completely dependent on these and turn
Cane and eyeball longitudinal extent is promoted to further offset from perfect condition.These behaviors finally hinder patient to recover twenty-twenty vision.
Therefore, it is necessary to propose a kind of improved technical scheme to solve the above problems.
【The content of the invention】
To achieve these goals, the present invention proposes a kind of sight protectio method and apparatus, so as to can be in different diopters
User using VR glasses when given accurately and effectively sight protectio.
According to an aspect of the present invention, the present invention proposes a kind of sight protectio method, including：
Determine the visual range of user；
When user wears virtual reality glasses viewing virtual image, the imaging of virtual image in control virtual reality glasses
Position is located in the visual range；Based on the visual range, the image space of the virtual image is periodically adjusted, to change
Become the eye muscle state of user, protect eyesight.
Further, acuity threshold and/or vision prescription value can be based on, the visual range is determined.
Further, the acuity threshold, can, when user wears the virtual reality glasses, adjust virtual reality
The virtual image image space of glasses, until user visual maximum distance and/or minimum distance are obtained, and with the maximum distance
And/or minimum distance is used as acuity threshold；Or,
Can be the maximum distance and/or minimum distance pre-set；Or,
Can be that the distance of distinct vision determined according to vision prescription value obtains the visual maximum distance of user and/or most low coverage
From, and acuity threshold is used as using the maximum distance and/or minimum distance.
Further, the vision prescription value, can be the diopter pre-set；Or,
It can be the dioptric that virtual reality glasses detection user eyesight is obtained when user wears the virtual reality glasses
Degree.
Further, based on the visual range, the image space of the virtual image is periodically adjusted, can be included：
According to the visual range, according to Adjustment principle set in advance, the image space of periodic variation virtual image.
Further, can be according to predetermined tune during user wears virtual reality glasses viewing virtual image
Whole time, displacement and moving direction, make the image space of virtual image move closer to the/eyes away from user, until mobile
To an end points of visual range, then make virtual image image space be gradually distance from/close to the eyes of user, until be moved to
Another end points of visual range, so moves in circles.
Further, when virtual reality glasses viewing virtual image can be worn in user, what monitoring user continuously watched
Time, when viewed between exceed time threshold set in advance when, point out user enter sight protectio pattern, or automatically into regarding
Power protected mode.
Further, the instruction that can be inputted according to user, into sight protectio pattern.
According to another aspect of the invention, it is proposed that a kind of vision protection device, including virtual reality glasses,
Data determination unit, the visual range for determining user,
Central control unit, for based on the visual range, producing virtual image image space control signal；
Adjustment unit, for according to the virtual image image space control signal from central control unit, control to be virtual
The image space of virtual image is located in the range of the vision correction in Reality glasses, and periodically adjusts the virtual image
Image space, to change the eye muscle state of user, protects eyesight.
Further, the data determination unit can be determined described visual based on acuity threshold and/or vision prescription value
Scope.
Further, when user wears the virtual reality glasses, the adjustment unit can adjust virtual reality eye
The virtual image image space of mirror, until obtain the visual farthest and/or minimum distance of user, and with the maximum distance and/or
Minimum distance is used as acuity threshold；Or,
Maximum distance and/or minimum distance can be set to be used as acuity threshold for data determination unit in advance；Or,
Data determination unit can be worth to the distance of distinct vision of eyes of user according to the vision prescription of acquired user, enter
And user visual maximum distance and/or minimum distance are obtained, and eyesight threshold is used as using the maximum distance and/or minimum distance
Value.
Further, the data determination unit can using the diopter pre-set as vision prescription value, or,
When user wears the virtual reality glasses, the diopter that the virtual reality glasses detection user eyesight is obtained
To be used as vision prescription value.
Further, the central control unit can according to the visual range, according to Adjustment principle set in advance,
Virtual image image space control signal is periodically produced, virtual image in virtual reality glasses is changed to control to adjust unit
Image space.
Further, can also include monitoring unit, for user wear virtual reality glasses viewing virtual image when,
Monitoring time for continuously watching of user, when viewed between when exceeding time threshold set in advance, point out user to enter eyesight guarantor
Shield pattern, or automatically into sight protectio pattern.
Further, user input unit can also be included, the instruction for receiving user's input, into sight protectio mould
Formula.
Further, the data determination unit, central control unit, adjustment unit, monitoring unit, user input unit
It can be integrated on the virtual reality glasses；Or,
It can be partially integrated on virtual reality glasses, be partially integrated in single functional unit, the functional unit
Wire/wireless communication is carried out by communication unit with the virtual reality glasses.
Further, the adjustment unit can be by changing at least one in lens and display screen in virtual reality glasses
Position of the individual part in virtual reality glasses changes the image space of virtual image；Or,
The lens of the virtual reality glasses can be pancratic lens, and the adjustment unit is described by controlling
The focal length of mirror changes the image space of virtual image.
As the third aspect of the present invention, the present invention also provides a kind of VR glasses with eyesight protection function, the VR
Glasses enter after sight protectio pattern, determine the visual range of user；When user wears VR glasses viewing virtual image, control
The image space of virtual image is located in the visual range in VR glasses；Based on the visual range, periodically adjust described
The image space of virtual image, to change the eye muscle state of user, protects eyesight.
Sight protectio method provided by the present invention, device and the VR glasses with eyesight protection function, can according to
The visual range at family accurately controls the image space of virtual image, and by user's visual range periodically-varied position come
Eye muscle is tempered, this can not only prevent eye fatigue of user when using VR glasses, protect eyesight, improve VR glasses
Usage comfort；Ciliary muscle functional rehabilitation can be more realized, so as to recover normal primary feedback loop, secondary feed back to is prevented
Road stimulates the distortion of eyeball longitudinal extent.Finally, ciliary muscle and eyeball longitudinal extent will all recover normal.
【Brief description of the drawings】
In order to illustrate the technical solution of the embodiments of the present invention more clearly, being used required in being described below to embodiment
Accompanying drawing be briefly described.Wherein：
Fig. 1 is the eye imaging schematic diagram of twenty-twenty vision.
Fig. 2 is ametropic eye imaging schematic diagram, and wherein Fig. 2 a are myopia, and Fig. 2 b are long sight.
Fig. 3 is the correcting principle figure of vision correction lens in the prior art, and wherein Fig. 3 a are myopia, and Fig. 3 b are long sight.
Fig. 4 is a kind of flow chart of preferred embodiment of the sight protectio method of the present invention.
Fig. 5 is a kind of functional-block diagram of preferred embodiment of the vision protection device of the present invention.
【Embodiment】
The present invention is based on virtual reality glasses (VR glasses), propose a kind of sight protectio method, vision protection device and
A kind of VR glasses with eyesight protection function, while using virtual reality glasses, it may be determined that the visual range of user, and
Strengthen eye muscle to take exercise, change the eye muscle state of user, protect eyesight.
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
With reference to Fig. 4, as a kind of preferred embodiment of the present invention, a kind of vision correction procedure, including：
Determine the visual range of user；
When user wears virtual reality glasses viewing virtual image, the imaging of virtual image in control virtual reality glasses
Position is located in the visual range；Based on the visual range, the image space of the virtual image is periodically adjusted, to change
Become the eye muscle state of user, protect eyesight.
The visual range of user can be stored in advance in virtual reality glasses, or be stored in can be to virtual reality glasses
In the miscellaneous equipment that these information are provided.It can be user's setting when carrying out vision correction using the virtual reality glasses
, also what but virtual reality glasses or miscellaneous equipment were prestored in itself.
As a kind of preferably embodiment, the present invention can be based on acuity threshold and/or vision prescription value, it is determined that described can
Depending on scope.
The acuity threshold generally can be, but not limited to determine using following several method：
One is when user wears the virtual reality glasses, the virtual images of virtual reality glasses is adjusted into image position
Put, until obtain the visual maximum distance and/or minimum distance of user, and using the maximum distance and/or minimum distance as regarding
Force threshold；
The second is user voluntarily set or VR glasses/equipment in the maximum distance and/or minimum distance that prestore；
The third is the distance of distinct vision of eyes of user is obtained according to the vision prescription value of user, and then it is visual most to obtain user
Remote and/or minimum distance, and acuity threshold is used as using the maximum distance and/or minimum distance.
In physics, during the too remote soon and too near object of people, eyeball will be adjusted, that is, change lenticular
Projection degree, but there is a distance to make eyes without adjusting with regard to that can see, this distance is just the distance of distinct vision.Namely
Say that the object that eyes are seen at the distance of distinct vision is to feel most comfortable, be best suitable for normal eye's observation nearby compared with the distance of wisp.
The method of the distance of distinct vision of eyes of user is obtained according to the vision prescription value of user a variety of, such as can learn from else's experience and test
Value, normally the distance of distinct vision of people is about 25 centimetres.The distance of distinct vision of myopia is generally less than 20cm, and presbyopic photopic vision
Distance is then generally higher than 30cm.
It can also be calculated according to below equation：
Wherein：F is the inverse of diopter, and u is the distance of distinct vision of normal person, i.e. 0.25m, and v is the distance of distinct vision of user.
Be to calculate exemplified by -1 with 100 degree of myopia degree, i.e. diopter, then v=-0.2m, that is to say, that the photopic vision of user away from
From for 20cm.
Can also have a variety of according to the method for the visual maximum distance of the distance of distinct vision of user acquisition and/or minimum distance,
It for example can up or down be floated with the empirical value of these distances of distinct vision, obtain one apart from interval, and this is interval
End points is used as maximum distance and/or minimum distance.
Alternatively, it is also possible to directly use the computational methods of some conventional near points or far point.These methods and non-invention
Invention main points, therefore repeat no more.
The vision prescription value, can be, but not limited to determine using following two methods：
One is the diopter that user or equipment are pre-set；
The second is when user wears the virtual reality glasses, the dioptric that virtual reality glasses detection user eyesight is obtained
Degree.Now, virtual reality glasses can be as oculist checks user's eyesight, the traditional visual chart of display or eyesight detection
Figure etc. gives user, and waits user feedback identification result, when the multigroup identification result for judging user is all correct, then really
Recognize the diopter of the user of acquisition.
After acuity threshold and/or vision prescription value that user is obtained by above-mentioned steps, you can obtain its visual range, example
Such as, the visual range of the user is made up of the maximum distance and minimum distance of the acuity threshold；Or by the eyesight threshold
Value and the distance of distinct vision obtained by the vision prescription value are constituted.
At this point it is possible to control virtual reality glasses to be produced in the distance of distinct vision of user or the position of acuity threshold virtually
Image, so that virtual image can clearly be watched by obtaining user.
Certainly, the present invention can also be previously stored a tables of data, wherein different visual of different vision prescription value correspondence
Scope, when it is determined that user vision prescription value after, you can corresponding visual range data are obtained by look-up table.
During user's viewing virtual image, based on the visual range, the imaging of virtual image is periodically adjusted
Position.Such as in visual range, according to Adjustment principle set in advance, such as default adjustment time, displacement, movement side
To the image space of periodic variation virtual image, to avoid user from staring at for a long time in a fixed image space, reaches
Change the eye muscle state of user, protect the purpose of eyesight.The adjusting range of the image space of virtual image is according to user's
Ametropia degree and experience comfort level, can between the distance of distinct vision and maximum distance, also can be the distance of distinct vision and most low coverage
From between, can also be between maximum distance and minimum distance etc..
For example, for myopia user, visual range can be set as his distance of distinct vision and maximum distance it
Between, virtual image is imaged in the distance of distinct vision, is allow its easily (i.e. eye muscle is without adjustably) viewing, is passed through again afterwards
The scheduled time, or when detecting the head of user and having motion by a relatively large margin, or the virtual image of display has large change, such as
Change broadcasting film, the follow-up continued broadcasting of pause to put, adjust virtual image image space according to predetermined displacement amount, make it away from user
Eyes, and after direct maximum distance is gradually distance from, then the virtual image that gradually furthers image space.And so on so that
The state of the ciliary muscle of user present loosen-gradually tension-tension-gradually loosen-loosens such cyclically-varying, from
And the eye muscle state for changing user is played, protect the purpose of eyesight.And the adjustment by controlling this periodicity to adjust
Frequency and adjustment amplitude, such as make regulating time interval long, make displacement smaller, then can cause this sight protectio
Carried out in the case where user is without obvious perceive, increase the comfort level used.
As a kind of better embodiment, the present invention can also include visual range and update step, such as periodically or non-periodically
Ground detects and updates the visual range of user, to adjust the image space of virtual image.This is allowed in the mistake corrected defects of vision
In the case of Cheng Zhong, one kind, the eyesight of user may change, therefore can regularly update, or according to the instruction of user
Update.Detection herein can be active detecting, i.e., when user wears virtual reality glasses, and detection user's eyesight is in the wrong to obtain
Luminosity, and based on diopter, obtain new visual range.Either active warning user sets new acuity threshold and/or regarded
Power prescription values.But also passive detection, i.e. user, which actively start, regards force detection program, or be actively entered new acuity threshold and/
Or vision prescription value.And in another case, visual range can also be suitably adjusted, it is for example appropriate to increase maximum distance, so that
Ciliary muscle is set to obtain larger range of exercise.
As another preferred embodiment of the present invention, the present invention provides a kind of vision protection device, including virtual reality eye
Mirror, in addition to：
Data determination unit, the visual range for determining user,
Central control unit, for based on the visual range, producing virtual image image space control signal；
Adjustment unit, for according to the virtual image image space control signal from central control unit, control to be virtual
The image space of virtual image is located in the range of the vision correction in Reality glasses, and periodically adjusts the virtual image
Image space, to change the eye muscle state of user, protects eyesight.
The present embodiment can also include monitoring unit, for user wear virtual reality glasses viewing virtual image when,
Monitoring time for continuously watching of user, when viewed between when exceeding time threshold set in advance, point out user to enter eyesight guarantor
Shield pattern, or automatically into sight protectio pattern.
Also include user input unit in this implementation, the instruction for receiving user's input, into sight protectio pattern.
Wherein, as a kind of preferred embodiment, the data determination unit, central control unit, adjustment unit, monitoring
Unit, user input unit are integrated on the virtual reality glasses.
As another preferred embodiment, it is partially integrated on virtual reality glasses, is partially integrated in single operation
In part, the functional unit carries out wire/wireless communication with the virtual reality glasses by communication unit.For example, described
Adjustment unit, monitoring unit can be integrated in virtual reality glasses, the data determination unit, central control unit, user
Input block can be integrated in the functional units such as similar operations bar, operation handle, remote control, and the functional unit is logical by it
Believe that unit carries out wire/wireless communication with the virtual reality glasses, to pass through the tune being integrated on the virtual reality glasses
Unit is saved, the image space of the virtual image is controlled.
The adjustment unit can adjust the image space of virtual image by way of mechanically or electrically.
For example, the adjustment unit can include stepper motor, control module and transmission module, so that single in center control
Under the control of member, by changing in lens and display screen in virtual reality glasses at least one part in virtual reality glasses
Position change the image space of virtual image；
For another example, the lens of the virtual reality glasses can be pancratic lens, such as variable focal length based on liquid crystal
Eyeglass.The adjustment unit is by changing the voltage of eyeglass so that the focal length of this eyeglass changes, so as to change virtual
The image space of image.
The data determination unit is based on acuity threshold and/or vision prescription value determines the visual range.
Wherein, the data determination unit obtains acuity threshold, can be when user wears the virtual reality glasses,
The adjustment unit adjusts the virtual image image space of virtual reality glasses, until obtain the visual maximum distance of user and/
Or minimum distance, and acuity threshold is used as using the maximum distance and/or minimum distance；Can also be that user is true by the data
Input interface in order member, inputs visual maximum distance and/or minimum distance；It can also be in data determination unit in advance
The maximum distance and/or minimum distance of storage；It can also be and eyes of user is obtained according to the vision prescription value of acquired user
The distance of distinct vision, and then obtain the visual maximum distance and/or minimum distance of user, and with the maximum distance and/or most low coverage
From being used as acuity threshold.
The data determination unit obtains vision prescription value, can be that user passes through the input in the data determination unit
The diopter that interface is pre-entered；It can also be the diopter prestored in data determination unit；It can also be and worn in user
When wearing the virtual reality glasses, the diopter that the virtual reality glasses detection user eyesight is obtained.
The visual range is made up of the maximum distance and minimum distance of the acuity threshold；Can also be by the eyesight threshold
Value and the distance of distinct vision obtained by the vision prescription value are constituted.
Certainly, in the present embodiment, a tables of data can be also stored in the data determination unit in advance, wherein different
The different visual range of vision prescription value correspondence, after data determination unit obtains the vision prescription value of user, you can by looking into
Table method determines corresponding visual range.
The adjustment unit virtual image image spaces of virtual reality glasses can be controlled for the distance of distinct vision of user or
Acuity threshold.
The central control unit, according to Adjustment principle set in advance, is periodically produced according to the visual range
Virtual image image space control signal, to control to adjust the image space that unit changes virtual image in virtual reality glasses.
The data determination unit can also obtain the visual range of renewal, and the central control unit is according to new visual model
Enclose, adjust the image space of virtual image.
As another preferred embodiment of the present invention, the present invention also provides a kind of VR eyes with eyesight protection function
Mirror.
A sight protectio starting switch is provided with the VR glasses, user can be started by sight protectio when in use
Switch enters sight protectio pattern.The sight protectio starting switch can be physical switch, also can be software switch.
For example during user uses VR glasses viewing video, the time that VR glasses monitoring user continuously watches, when
After user is continuously watched more than 20 minutes, VR glasses show the prompting of sight protectio, and eyesight can be entered after user confirms and is protected
Shield pattern.
Under sight protectio pattern, VR glasses determine the visual range of user first.
The mapping table of diopter and visual range can be previously provided with VR glasses.And system default is initial
Visual range is the visual range under twenty-twenty vision, you can regard scope as 25cm~50cm.
VR glasses can show that prompting user inputs the dialog box of diopter, if user inputs diopter, can lead to
Cross look-up table and determine visual range；If user's selection detection visual range, one group of virtual image can be played automatically, and change
The image space of virtual image, to detect the visual range of user.
It is determined that after the visual range of user, in image space to the visual range of VR glasses adjust automatically virtual images,
Such as it is adjusted in the distance of distinct vision of user.Then in visual range, according to predetermined adjustment time, displacement and movement side
To, the image space of virtual image is moved closer to the/eyes away from user, until an end points of visual range is moved to,
The image space for making virtual image again is gradually distance from/close to the eyes of user, until another end points of visual range is moved to,
So move in circles.The operating process of whole cycle adjustment virtual image image space can contemplate the sense for reducing user as far as possible
The movement of degree of knowing, preferably user to image space is not felt.
When user instruction exits sight protectio pattern, or during the shutdown of VR glasses, you can stop circulation, image space is determined
Position is in the distance of distinct vision of initial position or user.
It should be noted that the thinking of the sight protectio of the present invention can also be applied in plurality of application scenes, herein not
Enumerate again.
Sight protectio method provided by the present invention, vision protection device and the VR glasses with eyesight protection function,
The image space of virtual image can be accurately controlled according to the visual range of user, and passes through the periodicity in user's visual range
Change position to temper eye muscle, this can not only prevent eye fatigue of user when using VR glasses, protect eyesight, carry
The usage comfort of high VR glasses；Ciliary muscle functional rehabilitation can be more realized, so as to recover normal primary feedback loop, is prevented
Secondary backfeed loop stimulates the distortion of eyeball longitudinal extent.Finally, ciliary muscle and eyeball longitudinal extent will all recover normal.
Therefore, the present invention can protect eyesight, and clear-cutting forestland eyesight, finally treat ametropia.Meanwhile, those have hair
Disease symptoms (such as ciliary muscle is often very tired, but eyeball longitudinal extent is not yet distorted) will not produce asking for eyeball longitudinal extent distortion
Topic, it is lasting ametropia to prevent developing into can aid in protection eyesight.Certainly, the present invention not only can be for those typical cases
Illness symptom, it can also correct the infringement that traditional eyewear is caused.
Described above has fully disclosed the embodiment of the present invention.It is pointed out that being familiar with the field
Scope of any change that technical staff is done to the embodiment of the present invention all without departing from claims of the present invention.
Correspondingly, the scope of claim of the invention is also not limited only to previous embodiment.
Claims (18)
1. a kind of sight protectio method, it is characterised in that：Including：
Determine the visual range of user；
When user wears virtual reality glasses viewing virtual image, the image space of virtual image in control virtual reality glasses
In the visual range；Based on the visual range, the image space of the virtual image is periodically adjusted, to change use
The eye muscle state at family, protects eyesight.
2. the sight protectio method as described in right 1, it is characterised in that：Based on acuity threshold and/or vision prescription value, it is determined that described
Visual range.
3. method as claimed in claim 2, it is characterised in that：The acuity threshold, is to wear the virtual reality eye in user
During mirror, the virtual image image space of virtual reality glasses is adjusted, until obtaining the visual maximum distance of user and/or most low coverage
From, and acuity threshold is used as using the maximum distance and/or minimum distance；Or,
It is the maximum distance and/or minimum distance pre-set；Or,
It is that the distance of distinct vision determined according to vision prescription value obtains the visual maximum distance and/or minimum distance of user, and with this
Maximum distance and/or minimum distance are used as acuity threshold.
4. method as claimed in claim 2, it is characterised in that：The vision prescription value, is the diopter pre-set；Or,
It is the diopter that virtual reality glasses detection user eyesight is obtained when user wears the virtual reality glasses.
5. such as one of Claims 1-4 methods described, it is characterised in that：Based on the visual range, periodically adjust described
The image space of virtual image, including：
According to the visual range, according to Adjustment principle set in advance, the image space of periodic variation virtual image.
6. method as claimed in claim 5, it is characterised in that：The process that virtual reality glasses watch virtual image is worn in user
In, according to predetermined adjustment time, displacement and moving direction, the image space for making virtual image moves closer to/away from user
Eyes, until be moved to an end points of visual range, then make virtual image image space be gradually distance from/close to user's
Eyes, until being moved to another end points of visual range, so move in circles.
7. method as claimed in claim 1, it is characterised in that：When user wears virtual reality glasses viewing virtual image, prison
Survey time for continuously watching of user, when viewed between when exceeding time threshold set in advance, point out user to enter sight protectio
Pattern, or automatically into sight protectio pattern.
8. method as claimed in claim 1, it is characterised in that：The instruction inputted according to user, into sight protectio pattern.
9. a kind of vision protection device, including virtual reality glasses, it is characterised in that：Also include
Data determination unit, the visual range for determining user,
Central control unit, for based on the visual range, producing virtual image image space control signal；
Adjustment unit, for according to the virtual image image space control signal from central control unit, controlling virtual reality
The image space of virtual image is located in the range of the vision correction in glasses, and periodically adjusts the imaging of the virtual image
Position, to change the eye muscle state of user, protects eyesight.
10. vision protection device as claimed in claim 9, it is characterised in that：The data determination unit be based on acuity threshold and/
Or vision prescription value determines the visual range.
11. device as claimed in claim 10, it is characterised in that：When user wears the virtual reality glasses, the regulation
Unit adjusts the virtual image image space of virtual reality glasses, until the visual farthest and/or minimum distance of user is obtained, and
Acuity threshold is used as using the maximum distance and/or minimum distance；Or,
Maximum distance and/or minimum distance are set to be used as acuity threshold for data determination unit in advance；Or,
Data determination unit is worth to the distance of distinct vision of eyes of user according to the vision prescription of acquired user, and then is used
Family visual maximum distance and/or minimum distance, and acuity threshold is used as using the maximum distance and/or minimum distance.
12. device as claimed in claim 10, it is characterised in that：The data determination unit using the diopter pre-set as
Vision prescription value, or,
When user wears the virtual reality glasses, the virtual reality glasses detect the diopter of user's eyesight acquisition to make
For vision prescription value.
13. such as one of claim 9 to 12 described device, it is characterised in that：The central control unit is according to described visual
Scope, according to Adjustment principle set in advance, periodically produces virtual image image space control signal, to control to adjust list
Member changes the image space of virtual image in virtual reality glasses.
14. device as claimed in claim 9, it is characterised in that：Also include monitoring unit, for wearing virtual reality eye in user
When mirror watches virtual image, monitoring time for continuously watching of user, when viewed between when exceeding time threshold set in advance, carry
Show that user enters sight protectio pattern, or automatically into sight protectio pattern.
15. device as claimed in claim 9, it is characterised in that：Also include user input unit, the finger for receiving user's input
Order, into sight protectio pattern.
16. such as claim 9,14 or 15 described devices, it is characterised in that：The data determination unit, central control unit,
Adjustment unit, monitoring unit, user input unit are integrated on the virtual reality glasses；Or,
It is partially integrated on virtual reality glasses, is partially integrated in single functional unit, the functional unit and the void
Intend Reality glasses and wire/wireless communication is carried out by communication unit.
17. device as claimed in claim 9, it is characterised in that：The adjustment unit is saturating in virtual reality glasses by changing
Position of at least one part in virtual reality glasses changes the image space of virtual image in mirror and display screen；Or,
The lens of the virtual reality glasses are pancratic lens, and the adjustment unit is by controlling the focal lengths of the lens
To change the image space of virtual image.
18. a kind of VR glasses with eyesight protection function, the VR glasses enter after sight protectio pattern, and determine user can
Depending on scope；When user wears VR glasses viewing virtual image, the image space of virtual image is located at described in control VR glasses
In visual range；Based on the visual range, the image space of the virtual image is periodically adjusted, to change the eye of user
Muscular states, protect eyesight.
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