A kind of diopter self adaptation head-mounted display apparatusTechnical field
The present invention relates to a kind of head-wearing display device, particularly to a kind of diopter being suitable for human eyeSelf adaptation head-wearing display device.
Background technology
Within display screen ten centimetres of the eyeball of distance of head-wearing display device, the nearest image conventional andSpeech is that human eye cannot be seen clearly.And the 3-D view that head-wearing display device is shown, due to imageThere is three-dimensional space, so wearer will be real-time to quick three dimensions dynamic menuThe direction of visual lines actively regulating eyes and eye lens focal length, owing to for a long time eye being enteredRow sum-equal matrix will result in wearer eyestrain, affects the visual experience of device.This device is by regulationDisplay screen and optical lens, invented a kind of adaptive diopter head-wearing display device, can avoidDirection of visual lines to eyes and the eye lens focal length of wearer's initiative are adjusted.Strengthen and useFamily is experienced.
Summary of the invention
According to an aspect of the invention, it is provided a kind of diopter self adaptation head-mounted display apparatus,Including towards the display screen of human eye, the optical lens being positioned between described display screen and human eye and eyeballTracking module: described display screen is for presenting picture towards human eye, with described optical lens centerDistance is object distance u；Described optical lens can into human eye for being focused into by the picture of described display screenThe image seen clearly, the virtual image of described image and human eye lay respectively at the both sides of described display screen, describedThe virtual image is image distance v with the distance of described optical lens center, and described optical lens also has focal distance f；Described eye tracking module positions the point of observation position of user for detection eyes direction of visual lines in real timePut, the relative position of display screen described in the position adjustments put according to the observation and described optical lens；InstituteStating that display screen is set to described optical lens can independently or jointly the most relative shifting along optical axis directionDynamic, and according in optical lens described in the point of observation position adjustments of described eye tracking module acquisitionDistance between the heart and described display so that object distance u of regulation meets condition 1/f=1/u-1/v.
Preferably, described display screen is set to described optical lens admittedly with the relative movement of optical lensFixed, described display screen moves in the direction of the optical axis.
Preferably, described display screen is also configured to described display screen admittedly with the relative movement of optical lensFixed, described optical lens moves in the direction of the optical axis.
Preferably, the relative movement of described display screen and optical lens be also configured to described display screen withDescribed optical lens coordinates movement the most mutually.
Preferably, described optical lens is provided with ultrasonic motor, is used for controlling described optical lensMovement in the direction of the optical axis.
Preferably, described optical lens is set to array type optical lens.
Preferably, described display screen is provided with power drill/driver, is used for controlling described display screen at lightMovement on direction of principal axis.
Preferably, described display screen is set to LCD display or LED display.
According to another aspect of the present invention, it is provided that a kind of diopter self adaptation wear-type display dressThe method put, described device includes the display screen towards human eye, is positioned between described display screen and human eyeOptical lens and eye tracking module, said method comprising the steps of: a) pass through eye trackingModule detection Binocular vison line position；B) according to position calculation picture point and the described optical lens of eyes sight lineThe distance at center, i.e. image distance v；C) described optical lens center and described display are regulated according to image distance vDistance between device, i.e. object distance u；D) image distance v is made to meet first condition by instrumentality away from u, i.e.1/f=1/u-1/v；E) circulation step a)～d), adjusts described display and described optical lens in real timeThe relative position at center so that it is meet 1/f=1/u-1/v.
According to a kind of diopter self adaptation head-wearing display device of the present invention, can be adjusted voluntarily by equipmentJoint display screen and the relative distance of optical lens, instead of wearer's initiative sight line side to eyesIt is adjusted to eye lens focal length, contributes to protecting eyes, avoiding visual fatigue；DeviceCompact, easily install, wear comfortable, its thorough fare and extensively, it is adaptable to regarding of 3D effectFeel and experience.
Should be appreciated that aforementioned description substantially is exemplary illustration with follow-up detailed description and conciliatesRelease, the restriction of content claimed to the present invention should not be used as.
Accompanying drawing explanation
With reference to the accompanying drawing enclosed, the more purpose of the present invention, function and advantage will be real by the present inventionExecute the described below of mode to be illustrated, wherein:
Fig. 1 (a) schematically shows the use of the diopter self adaptation head-wearing display device according to the present inventionState diagram；
Fig. 1 (b) schematically shows the main of the diopter self adaptation head-wearing display device according to the present inventionStructure；
Fig. 2 schematically shows the display screen of the diopter self adaptation head-wearing display device according to the present inventionThe relation of the relative movement with optical lens and light path principle figure；
Fig. 3 schematically shows the workflow of the diopter self adaptation head-wearing display device according to the present inventionCheng Tu.
Fig. 4 schematically shows a reality of the diopter self adaptation head-wearing display device according to the present inventionExecute example；
Fig. 5 schematically shows a reality of the diopter self adaptation head-wearing display device according to the present inventionExecute example；
Fig. 6 schematically shows a reality of the diopter self adaptation head-wearing display device according to the present inventionExecute example.
Detailed description of the invention
By with reference to one exemplary embodiment, the purpose of the present invention and function and be used for realizing these meshAnd the method for function will be illustrated.But, the present invention is not limited to disclosed below showingExemplary embodiment；By multi-form, it can be realized.The essence of description is onlyHelp the detail of the various equivalent modifications Integrated Understanding present invention.
Hereinafter, embodiments of the invention will be described with reference to the drawings.In the accompanying drawings, identical attachedFigure labelling represents same or similar parts.
Fig. 1 (a) shows the use shape of the diopter self adaptation head-wearing display device according to the present inventionState figure；As shown in Fig. 1 (a), beholder wears described head-wearing display device 110 viewing ring aroundBorder image 120.
Fig. 1 (b) schematically shows the master of the diopter self adaptation head-wearing display device according to the present inventionWant structure；As shown in Fig. 1 (b), head-wearing display device 110 include the display screen 103 towards human eye,The optical lens 102 being positioned between display screen 103 and human eye and eye tracking module 101 and lightAxle 104.
Display screen 103, for presenting picture towards human eye, is object distance with the distance of optical lens centeru；
According to one embodiment of present invention, display screen 103 is provided with power drill/driver, is used for controllingMake the movement in the direction of the optical axis of described display screen.
According to one embodiment of present invention, display screen 103 is set to LCD display or LEDDisplay screen.
Optical lens 102 is for being focused into, by the picture of display screen 103, the figure can seen clearly for human eyePicture, the virtual image of image and human eye lay respectively in the both sides of display screen 103, the virtual image and optical lensThe distance of the heart is image distance v, and optical lens 102 also has focal distance f；
According to one embodiment of present invention, optical lens 102 is provided with ultrasonic motor, is used forControl the movement in the direction of the optical axis of described optical lens.
According to one embodiment of present invention, optical lens is set to array type optical lens.
Eye tracking module 101 positions the observation of user for detection eyes direction of visual lines in real timePoint position, the relative position of the position adjustments display screen 103 put according to the observation and optical lens 102；
Display screen 103 and optical lens 102 are set to can independently or jointly along optical axis directionRelative movement, and the point of observation position adjustments optical lens obtained according to eye tracking module 101Distance between 102 centers and display so that object distance u of regulation meets condition 1/f=1/u-1/v.
Fig. 2 schematically shows the display screen of the diopter self adaptation head-wearing display device according to the present inventionThe relation of the relative movement with optical lens and light path principle figure；As in figure 2 it is shown, optical lens 201Having focal distance f, the first image 202a has object distance u1, and the second image 202b has object distance u2,Described first image 202a and the second image 202b is respectively in display screen space bit in three-dimensional picturePut different images；From index path in Fig. 2, the first image 202a and the second image 202bConverge in, through optical lens 201, the virtual image presented in eye and be respectively the first virtual image 203a and secondVirtual image 203b, and the first virtual image 203a and the second virtual image 203b is respectively provided with image distance v1 and image distancev2；It is apparent that due to object distance u real-time change, so image distance v that the virtual image presented in eye is hadAlso it is real-time change.Owing to the focal distance f of optical lens 201 is fixing characteristic, so can only rootAccording to object distance u, beholder actively regulates direction of visual lines and the eye lens focal length of eyes, with under viewingThe image in one moment, so makes human eye produce feeling of fatigue.
The diopter self adaptation head-wearing display device of the present invention is by regulating described optical lens with describedDisplay screen is along the relative distance in optical axis 204 direction so that have the object of different object distances u in eyeImage distance v that the virtual image presented is had is constant or changes within the specific limits, and meets firstCondition 1/f=1/u-1/v, so can eliminate or alleviate human eye feeling of fatigue.
Diopter self adaptation head-wearing display device according to the present invention, has three kinds of modes and regulates describedOptical lens and described display screen, along the relative distance in optical axis 204 direction, are respectively as follows:
A) described display screen and the relative movement of optical lens are set to described optical lens and fix, instituteState display screen to move in the direction of the optical axis, in below figure 4 described in embodiment 1；
B) described display screen and the relative movement of optical lens are also configured to described display screen and fix, instituteState optical lens to move in the direction of the optical axis, in below figure 5 described in embodiment 2；
C) described display screen is also configured to described display screen and described light with the relative movement of optical lensLearn lens and coordinate movement the most mutually, in below figure 6 described in embodiment 3.
Fig. 3 schematically shows the workflow of the diopter self adaptation head-wearing display device according to the present inventionCheng Tu: the method diopter self adaptation of a kind of diopter self adaptation head-wearing display device wears display dressPutting, described device includes the display screen towards human eye, the optics being positioned between described display screen and human eyeLens and eye tracking module, said method comprising the steps of:
Step 301: detect Binocular vison line position by eye tracking module；
Step 302: according to the position calculation picture point of eyes sight line and described optical lens center away fromFrom, i.e. image distance v；
Step 303: according to image distance v regulate between described optical lens center and described display away fromFrom, i.e. object distance u；
Step 304: make image distance v meet first condition by instrumentality away from u, i.e. 1/f=1/u-1/v；
Step 305: circulation step 301～304, adjusts described display and described optical lens in real timeThe relative position at center so that it is meet 1/f=1/u-1/v.
Embodiment 1
Fig. 4 schematically shows a reality of the diopter self adaptation head-wearing display device according to the present inventionExecute example: described display screen is set to described optical lens 401 with the relative movement of optical lens 401Fixing, described display screen moves up optical axis 404 side so that object distance u2 after regulation, image distanceV3 and focal distance f meet first condition 1/f=1/u2-1/v3.
As shown in Fig. 4 (a), the present image 402 in display screen has object distance u1, shown optical lensMirror has focal distance f, and present image 402 converges in, through optical lens 401, presented in eye currentVirtual image 403a has image distance v1, and the virtual image 403b of previous moment image has image distance v2, in order to keep awayExempt from beholder actively to regulate the direction of visual lines of eyes and eye lens focal length and produce feeling of fatigue, thisInvention takes to adjust the position of display screen, and i.e. instrumentality is away from u1 so that current in display screen 402The virtual image 403a of image 402 also has identical image distance v2.
As shown in Fig. 4 (b), by regulation display screen on optical axis 404 direction with described optical lensThe relative position of mirror 401, method is that described optical lens 401 position is fixed, regulation display screenPosition, when original object distance u1 of the present image 402 of display screen is adjusted to object distance u2, currentlyThe image distance of the virtual image 403a of image 402 is also become image distance v3, and v2=v3 by original image distance v1,The most described image distance v3 is equal with image distance v2 of the virtual image 403b of previous moment image.And described displayScreen displacement on described optical axis 404 direction meets described first condition, i.e. 1/f=1/u2-1/v3:I.e. present image 402 converges in the current virtual image 403a's that presented in eye through optical lens 401Position is identical with the virtual image 403b position of previous moment image, then beholder need not actively regulate eyesDirection of visual lines and eye lens focal length, can reduce or eliminate eyestrain.
Embodiment 2
Fig. 5 schematically shows a reality of the diopter self adaptation head-wearing display device according to the present inventionExecute example: described display screen is also configured to described optical lens 501 with the relative movement of optical lens 501Fixing, described display screen moves up optical axis 504 side so that object distance u2 after regulation, image distanceV3 and focal distance f meet first condition 1/f=1/u2-1/v3.
As shown in Fig. 5 (a), the present image 502 in display screen has object distance u1, shown optical lensMirror has focal distance f, and present image 502 converges in, through optical lens 501, presented in eye currentVirtual image 503a has image distance v1, and the virtual image 503b of previous moment image has image distance v2, in order to keep awayExempt from beholder actively to regulate the direction of visual lines of eyes and eye lens focal length and produce feeling of fatigue, thisInvention takes to adjust the position of display screen, and i.e. instrumentality is away from u1 so that the present image in display screenThe virtual image 503a of 502 also has identical image distance v2.
As shown in Fig. 5 (b), by regulation display screen on optical axis 504 direction with described optical lensThe relative position of mirror 501, method is that described screen position is fixed, regulation optical lens 501Position, when original object distance u1 of the present image 502 of display screen is adjusted to object distance u2, currentlyThe image distance of the virtual image 503a of image 502 is also become image distance v3, and v2=v3 by original image distance v1,The most described image distance v3 is equal with image distance v2 of the virtual image 503b of previous moment image.And described displayScreen displacement on described optical axis 504 direction meets described first condition, i.e. 1/f=1/u2-1/v3:I.e. present image 502 converges in the current virtual image 503a's that presented in eye through optical lens 501Position is identical with the virtual image 503b position of previous moment image, then beholder need not actively regulate eyesDirection of visual lines and eye lens focal length, can reduce or eliminate eyestrain.
Embodiment 3
Fig. 6 schematically shows a reality of the diopter self adaptation head-wearing display device according to the present inventionExecute example: described display screen is also configured to described display screen and institute with the relative movement of optical lens 601State optical lens and coordinate movement mutually on optical axis 604 direction so that object distance u2 after regulation,Image distance v3 and focal distance f meet first condition 1/f=1/u2-1/v3.
As shown in Fig. 6 (a), the present image 602 in display screen has object distance u1, shown optical lensMirror 601 has focal distance f, and present image 602 converges in through optical lens 601 and presented in eyeCurrent virtual image 603a has image distance v1, and the virtual image 603b of previous moment image has image distance v2, forAvoid beholder actively to regulate the direction of visual lines of eyes and eye lens focal length and produce fatigueSense, the present invention takes the phase para-position on optical axis 604 direction of adjustment display screen and optical lens 601Putting, i.e. instrumentality is away from u1 so that the virtual image 603a of the present image 602 in display screen also has phaseSame image distance v2.
As shown in Fig. 6 (b), by regulation display screen on optical axis 604 direction with described optical lensThe relative position of mirror 601, method is described display screen with described optical lens 601 at optical axis 604Movement is coordinated mutually, when original object distance u1 of the present image 602 of display screen becomes thing on directionWhen u2, the image distance of the virtual image 603a of present image 602 is also become picture by original image distance v1Away from v3, and image distance v2 of the virtual image 603b of v2=v3, the most described image distance v3 and previous moment imageEqual.And described display screen and the movement on described optical axis 604 direction of the described optical lens 601Displacement meets described first condition, i.e. 1/f=1/u2-1/v3: i.e. present image 602 is through optical lensMirror 601 converges in the position of the current virtual image 603a presented in eye and the virtual image of previous moment image603b position is identical, then beholder need not actively regulate direction of visual lines and eye lens Jiao of eyesAway from, can reduce or eliminate eyestrain.
Described accompanying drawing is only and schematically and not in scale draws.Although already in connection with being preferable to carry outInvention has been described for example, it is to be understood that protection scope of the present invention is not limited to hereDescribed embodiment.
In conjunction with explanation and the practice of the present invention disclosed here, other embodiments of the present invention are for thisSkilled person is easy to expect and understand.Illustrate and embodiment is to be considered only as exemplary, true scope and the purport of the present invention are all defined in the claims.