CN106019587A - Near-to-eye display device capable of automatically focusing and method - Google Patents
Near-to-eye display device capable of automatically focusing and method Download PDFInfo
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- CN106019587A CN106019587A CN201610466292.7A CN201610466292A CN106019587A CN 106019587 A CN106019587 A CN 106019587A CN 201610466292 A CN201610466292 A CN 201610466292A CN 106019587 A CN106019587 A CN 106019587A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0138—Head-up displays characterised by optical features comprising image capture systems, e.g. camera
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
The invention provides a near-to-eye display device capable of automatically focusing. The device comprises a lens unit, a display unit, a shooting unit, a processing unit and a motion unit, wherein the shooting unit and the motion unit are electrically connected with the processing unit, the display unit, the shooting unit and the processing unit are fixed in the near-to-eye display device, and the lens unit can be driven by the motion unit to move. Compared with the prior art, the near-to-eye display device capable of automatically focusing can be more conveniently used, a shooting unit is arranged at a rim of a display screen to excellently utilize a display blind zone caused by reverse distortion, the shooting device is made to have a larger angle and a larger focal length space to shoot eye ball images of the user, the shooting device is guaranteed to shoot sharp enough eyeball images by arranging an infrared light supplement device, and automatic focusing precision is further improved.
Description
Technical field
The present invention relates to nearly eye field of display devices, more particularly, it relates to a kind of can near with automatic focusing
Eye display device and method.
Background technology
Nearly eye display device includes the head-mounted display (HMD) that can be projected directly at by image in observer's eye,
This nearly eye display device is the device that current virtual reality (VR) or augmented reality (AR) field are conventional.
Generally, the eyeball of the display screen distance user of nearly eye display device is less than ten centimetres, by special
Optical treatment, image can be clearly incident upon on the retina of people by nearly eye display device, at user's eye
Before present virtual large area image, be consequently for virtual reality or augmented reality.
Nearly eye display device has to pass through focusing before use.When the eyeball position of user or dioptric system with
When the optical system of nearly eye display device can not coordinate very well, need to adjust the optical system of nearly eye display device
System, makes user can see image clearly in eye.Prior art is many manually adjusts optical glass
Method adjusts optical system, and the optical system precision that this method adjusts is poor, and inconvenient.
Summary of the invention
In order to solve that current nearly eye display device focusing accuracy is poor and the defect of inconvenience, the present invention provides
What a kind of precision was higher and easy to use can be with the nearly eye display device of automatic focusing and method.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of can be with automatic focusing
Nearly eye display device, including lens unit, display unit, image unit, processing unit and moving cell,
Wherein, described image unit and described moving cell are electrically connected with described processing unit respectively, described display
Unit, described image unit and described processing unit are fixed in described nearly eye display device, and described motion is single
Unit can drive described lens unit to move,
Preferably, described image unit includes that at least two camera head, described display unit include display screen,
Described camera head is arranged on the edge of described display screen, and described camera head can shoot user eyeball
Image-forming information, and by the transmission of user ocular imaging information to described processing unit.
Preferably, described camera head be fixed focal length and towards camera head.
Preferably, described image unit farther includes infrared light compensating apparatus, and described infrared light compensating apparatus is arranged
At the edge of described display screen, described infrared light compensating apparatus shoots user ocular imaging at described camera head
User eyeball position can be carried out light filling during information.
Preferably, between described lens unit and described display unit, be provided with a confined space, described in take the photograph
As unit is placed in this confined space.
Preferably, described moving cell includes at least one motor, and described motor is according to described process
The signal of telecommunication that unit sends drives the motion of described lens unit.
Preferably, described nearly eye display device is virtual implementing helmet.
A kind of method providing nearly eye display device automatic focusing, described nearly eye display device includes lens list
Unit, display unit, image unit, processing unit and moving cell, described image unit shooting user eye
The image-forming information of ball, and by this information real-time Transmission to described processing unit, described processing unit is to receiving
Information process, and according to result transmission order to described moving cell, described moving cell drives
Dynamic described lens unit motion, when the image that the judgement of described processing unit receives is enough clear, closes institute
State image unit and described moving cell.
Preferably, described image unit include at least two fixed focal length and towards camera head, described aobvious
Show that unit includes that display screen, described camera head are arranged on the edge of described display screen.
Preferably, display screen is play image and is transferred user direction of visual lines, make the direction of user sight line towards
The direction that image unit is corresponding, the simultaneously image of the image unit shooting user eyeball of correspondence direction.
Compared with prior art, the present invention uses the method for automatic focusing to make the use of near-eye display system more
Add conveniently.The edge that camera head is arranged on display screen preferably make use of the display brought that reversely distorts
Blind area, makes camera head have bigger angle and focal length space to shoot the eyeball image of user.Use solid
Focus away from towards camera head, it is therefore prevented that general image pixel is the highest and feelings that ocular imaging is blurred
Condition, and then prevent processing unit from producing erroneous judgement.The use of motor and MCU makes control more accurate.
Between lens unit and display unit, it is provided with a confined space accommodates image unit, it is to avoid dust etc. enter
The surfaces externally and internally of camera head and the inner surface of lens unit are polluted by this space, and impact is to eyeball figure
The judgement of picture.By the image-forming information of image unit shooting user eyeball, and judge to connect by processing unit
The image received method the most clearly, to judge image imaging method the most clearly in user eye, is tied
Resultant motion unit controls the method for display unit and preferably achieves automatic focusing.The setting of infrared light compensating apparatus
Can ensure that camera head photographs eyeball image the most clearly, further increase the precision of automatic focusing.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is nearly eye display device image-forming principle schematic diagram；
Fig. 2 is the present invention nearly eye display device first embodiment structural representation；
Fig. 3 is the present invention nearly eye display device modular structure schematic diagram.
Fig. 4 is the present invention nearly eye display device the second embodiment camera head particular location schematic diagram；
Fig. 5 is the present invention nearly eye display device the second embodiment concrete structure schematic diagram；
Fig. 6 is that the present invention nearly eye display device the second embodiment camera head shoots image schematic diagram；
Detailed description of the invention
In order to solve that current nearly eye display device focusing accuracy is poor and the defect of inconvenience, the present invention provides
What a kind of precision was higher and easy to use can be with the nearly eye display device of automatic focusing and method.
In order to be more clearly understood from the technical characteristic of the present invention, purpose and effect, now comparison accompanying drawing is detailed
Describe the detailed description of the invention of the bright present invention in detail.
Fig. 1 is nearly eye display device image-forming principle schematic diagram.Display unit 13 sends parallel rays, light
Through the optical treatment of lens unit 12, inject in user eyeball, after crystalline lens reflects on the retina
Imaging.If imaging clearly, user is it can be seen that scene clearly, and in its eyeball, the image of reflection is also clear
Clear.Therefore, i.e. may know that user whether may be used by the readability of monitoring user ocular reflex image
The image sent with clear viewing display unit 13.Display unit 13 includes at least one display screen 23.Aobvious
Display screen 23 can be OLED (Organic Light-Emitting Diode；Organic Electricity laser display) screen
Or LCD (Liquid Crystal Display；Liquid crystal display) screen.
Referring to Fig. 2 Fig. 3, first embodiment of the invention includes that near-eye display system 10, the display of nearly eye are
System 10 can be virtual implementing helmet.Near-eye display system 10 includes lens unit 12, display unit
13, image unit 14, processing unit 15 and moving cell 16, image unit 14 can shoot user
The image-forming information of eyeball.In near-eye display system 10, image unit 14 and moving cell 16 respectively with
Processing unit 15 is electrically connected with, and the signal of telecommunication that moving cell 16 sends according to processing unit 15 drives lens
Unit 12 moves.Processing unit 15 includes MCU (Micro Controller Unit, micro-control unit),
MCU can control image unit 14 and the duty of moving cell 16.
In this embodiment, image unit 14 is arranged on lens unit 12 around, user ocular reflex
Light directly incident image unit 14.Image unit 14 can include a fixed focal length and towards take the photograph
As device 24, the directly image of shooting user eyes, it is also possible to include multiple fixed focal length and towards
Camera head 24, shoots user glasses picture picture by different angles and orientation, carries out result comprehensively
Process.In the scheme using multiple camera heads 24, display screen 23 can be play associated picture transfer and make
User's direction of visual lines, makes the direction towards camera head 24 correspondence, the direction of user sight line, the most corresponding
The camera head 24 in direction shoots the image of user eyeball, so, the camera head 24 of correspondence direction
Just can photograph the image become apparent from.Camera head 24 can shoot the image-forming information of user eyeball,
And transmit to processing unit 15.Here we select fixed focal length and towards camera head 24, mainly
Allow for the video camera of band automatic focusing function during shooting user ocular imaging information, may
There will be that general image pixel is the highest and situation that topography's (such as ocular imaging) is blurred, so can make
Processing unit 15 produces erroneous judgement, causes focusing unsuccessful.And use instead fixed focal length and towards camera head
After 24, the definition of ball portions imaging determines the pixel of general image, does not thus have above-mentioned
The problem that automatic focusing video camera is likely to occur.
Image unit 14 farther includes infrared light compensating apparatus 28.In order to prevent light leak impact during using
Display effect, virtual implementing helmet is many is arranged around soft encapsulant at lens unit 12, makes
After user wears nearly eye display device, eye is only capable of receiving the light that display screen 23 is launched.Thus
Making eye light very dark, during automatic focusing, camera head 24 is difficult to capture the figure of eyeball when working
Picture.We can make user eye be illuminated by the method improving display screen 23 brightness, but this needs
Light intensity that will be higher, and the vision of user can be caused the biggest infringement by higher light intensity.Therefore, we
Infrared light compensating apparatus 28 is set on the side of camera head 24, when camera head 24 prepares to start working,
Infrared light compensating apparatus 28 starts, and user eye carries out light filling, so on the one hand protects user
Vision, on the other hand makes camera head 24 can photograph image clearly.
In the first embodiment of the invention, arranging of camera head 24 is forward, and such angle and distance is clapped
Take the photograph eyeball image and need that camera head 24 itself is had higher parameter request and it is necessary to by display screen
23 playing videos are transferred eyeball and are turned to camera head 24.Even so, owing to distance is too near, focusing and
Shooting angle all receives great limitation.Therefore, if can allow camera head 24 position rearward,
Then can obtain bigger shooting angle and focusing space, convenient shooting user eyes image.
Fig. 4 Fig. 5 shows the second embodiment of the present invention.In the imaging of nearly eye display device, due to
The impact of lens unit 12, the image on display screen 23 there will be pincushion distortion, and it is near for eliminating this distortion
The problem that eye display field must solve.Will typically now by the way of by change, display screen 23 shows image,
It is reversely distorted.Image after the image of display screen 23 display is reversely distortion in Fig. 3, should
Image can be reduced into normal image model by after lens unit 12.During reversely distortion, by
In the change of display image, there will be the region that a part does not shows, this part at the edge of display screen 23
Region does not the most show image, is display blind area.We are by camera head 24 and infrared light compensating apparatus 28
Arrange and show in this section in blind area, the most do not affect the display effect of display screen 23, the most sharp again
Space with display screen 23, it is often more important that, such a larger distance and bigger shooting angle
The image making shooting eyeball becomes to be more prone to, and also reduces the parameter request of camera head 24 itself a lot.
Space between lens unit 12 and display unit 13 is confined space, and image unit 14 is arranged on
In this confined space.Confined space is set between lens unit 12 and display unit 13 and is possible to prevent this sky
Between come in contact with the external world, it is to avoid dusts etc. enter this space to the surfaces externally and internally of image unit 14 and lens
The inner surface of unit 12 pollutes, the impact judgement to eyeball image.
Refer to Fig. 6, owing to camera head 24 is arranged between lens unit 12 and display unit 13
In confined space, its image information gathering eyeball must be by the optical treatment of lens unit 12, therefore
Need accurately its towards, make the image light of user eyeball can inject after lens unit 12 processes and take the photograph
As device 24.We can determine its orientation information by the way of experiment, makes camera head 24 to clap
Taking the photograph the image of user eyeball, this is towards being identical for different user.At lens unit
In the case of 12 is no motion of, according to light path principle of reversibility, camera head 24 photographs image and uniquely determines.
When lens unit 12 moves, owing to motion amplitude is the least, the image information of camera head 24 shooting can be sent out
Raw movement by a small margin, but still can ensure that the image photographing user eyeball.
When user has worn near-eye display system 10, when automatic focusing starts, display screen 23 plays one
" ten " word image, meanwhile, infrared light compensating apparatus 28 starts, and camera head 24 gathers user eye figure
Picture, and by image information transmission to processing unit 15.At the processing unit 15 information to receiving
Reason, and according to result transmission order to moving cell 16, moving cell 16 drives lens unit 12
Motion, when " ten " word image that processing unit 15 judgement receives is enough clear, closes image unit
14 and moving cell 15, automatic focusing completes.Judge that " ten " word the most clearly can be by horizontal line with perpendicular
The modes such as the analysis of the concrete pixel of line judge.
Compared with prior art, the present invention uses the method for automatic focusing to make the use of near-eye display system 10
Convenient.Camera head 24 is arranged on the edge of display screen 23, preferably make use of the band that reversely distorts
The display blind area come, makes camera head 24 have bigger angle and focal length space to shoot the eyeball of user
Image.Use fixed focal length and towards camera head 24, it is therefore prevented that general image pixel is the highest and eyeball
The situation that imaging is blurred, and then prevent processing unit 15 from producing erroneous judgement.Motor and MCU make
With making control more accurate.Between lens unit 12 and display unit 13, it is provided with a confined space accommodate
Image unit 14, it is to avoid dust etc. enter this space to the surfaces externally and internally of camera head 24 and lens unit 12
Inner surface pollute, the impact judgement to eyeball image.User eye is shot by image unit 14
The image-forming information of ball, and judge that the image received method the most clearly judges by processing unit 15
Image is imaging method the most clearly in user eye, controls display unit 13 in conjunction with moving cell 16
Method preferably achieve automatic focusing.The setting of infrared light compensating apparatus 28 can ensure that camera head 24
Photograph eyeball image the most clearly, further increase the precision of automatic focusing.
Above in conjunction with accompanying drawing, embodiments of the invention are described, but the invention is not limited in above-mentioned
Detailed description of the invention, above-mentioned detailed description of the invention is only schematic rather than restrictive, this
The those of ordinary skill in field, under the enlightenment of the present invention, is being protected without departing from present inventive concept and claim
Under the ambit protected, it may also be made that a lot of form, within these belong to the protection of the present invention.
Claims (10)
1. one kind can the nearly eye display device of automatic focusing, it is characterised in that include lens unit, aobvious
Show unit, image unit, processing unit and moving cell, wherein, described image unit and described motion list
Unit is electrically connected with described processing unit respectively, described display unit, described image unit and described process list
Unit is fixed in described nearly eye display device, and described moving cell can drive described lens unit to move.
Nearly eye display device the most according to claim 1, it is characterised in that described image unit bag
Including at least two camera head, it is described aobvious that described display unit includes that display screen, described camera head are arranged on
The edge of display screen, described camera head can shoot the image-forming information of user eyeball, and by user eyeball
Image-forming information transmission is to described processing unit.
Nearly eye display device the most according to claim 2, it is characterised in that described camera head is
Fixed focal length and towards camera head.
Nearly eye display device the most according to claim 2, it is characterised in that described image unit enters
One step includes that infrared light compensating apparatus, described infrared light compensating apparatus are arranged on the edge of described display screen, described red
Outer light compensating apparatus can be to user eyeball position when described camera head shooting user ocular imaging information
Put and carry out light filling.
Nearly eye display device the most according to claim 1, it is characterised in that at described lens unit
And being provided with a confined space between described display unit, described image unit is placed in this confined space.
Nearly eye display device the most according to claim 1, it is characterised in that described moving cell bag
Including at least one motor, the signal of telecommunication that described motor sends according to described processing unit drives described
Mirror unit moves.
7. according to the nearly eye display device described in any one of claim 16, it is characterised in that described closely
Eye display device is virtual implementing helmet.
8. the method for a nearly eye display device automatic focusing, it is characterised in that described nearly eye display device
Including lens unit, display unit, image unit, processing unit and moving cell, described image unit is clapped
Take the photograph the image-forming information of user eyeball, and by this information real-time Transmission to described processing unit, described process list
The information received is processed by unit, and according to result transmission order to described moving cell, described
Moving cell drives the motion of described lens unit, when described processing unit judges that the image received is the most clear
Time, close described image unit and described moving cell.
The method of nearly eye display device automatic focusing the most according to claim 8, it is characterised in that
Described image unit include at least two fixed focal length and towards camera head, described display unit includes showing
Display screen, described camera head is arranged on the edge of described display screen.
The method of nearly eye display device automatic focusing the most according to claim 8, it is characterised in that
Described display screen is play image and is transferred user direction of visual lines, makes the direction of user sight line towards described shooting
The direction that unit is corresponding, the simultaneously image of the described image unit shooting user eyeball of correspondence direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610466292.7A CN106019587A (en) | 2016-06-23 | 2016-06-23 | Near-to-eye display device capable of automatically focusing and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610466292.7A CN106019587A (en) | 2016-06-23 | 2016-06-23 | Near-to-eye display device capable of automatically focusing and method |
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| CN106019587A true CN106019587A (en) | 2016-10-12 |
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| CN201610466292.7A Pending CN106019587A (en) | 2016-06-23 | 2016-06-23 | Near-to-eye display device capable of automatically focusing and method |
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| CN108051925A (en) * | 2016-10-31 | 2018-05-18 | 杜比实验室特许公司 | Glasses device with focus adjustable lens |
| CN108803006A (en) * | 2017-09-18 | 2018-11-13 | 成都理想境界科技有限公司 | Optical fiber scanning imaging system, equipment and its Distortion Detect and correction system |
| TWI646356B (en) * | 2018-01-05 | 2019-01-01 | 宏碁股份有限公司 | Head mounted display |
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