CN106444028B - A kind of near-eye display system and virtual reality device - Google Patents
A kind of near-eye display system and virtual reality device Download PDFInfo
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- CN106444028B CN106444028B CN201610851902.5A CN201610851902A CN106444028B CN 106444028 B CN106444028 B CN 106444028B CN 201610851902 A CN201610851902 A CN 201610851902A CN 106444028 B CN106444028 B CN 106444028B
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- 238000001514 detection method Methods 0.000 claims abstract description 23
- 238000003860 storage Methods 0.000 claims abstract description 13
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- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims 2
- 210000000695 crystalline len Anatomy 0.000 description 68
- 238000000034 method Methods 0.000 description 14
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- 229910001635 magnesium fluoride Inorganic materials 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 5
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 4
- 239000005083 Zinc sulfide Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
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- 239000012528 membrane Substances 0.000 description 3
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 3
- 210000002858 crystal cell Anatomy 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
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- 238000009738 saturating Methods 0.000 description 2
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- 239000011248 coating agent Substances 0.000 description 1
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- 238000005094 computer simulation Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
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Classifications
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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
- G02B27/0101—Head-up displays characterised by optical features
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a kind of near-eye display system and virtual reality device, which includes image source, electrically-controlled liquid crystal lens, the first beam splitting lens, magnification eyepiece, human eye diopter detection device, storage device and processor；Human eye diopter detection device is used to detect the human eye diopter of active user；Storage device is used for the first corresponding relationship for storing human eye diopter and being applied between the voltage of electrically-controlled liquid crystal lens；Processor is used for when human eye diopter detection device determines the human eye diopter of active user, and according to the first corresponding relationship, controlling the voltage being applied on electrically-controlled liquid crystal lens is voltage corresponding with the human eye diopter of active user.The technical solution that near-eye display system in the present invention focuses automatically due to using the voltage that control is applied on electrically-controlled liquid crystal lens, reduces the complexity of structure design, alleviates the weight of near-eye display system.
Description
Technical field
The present invention relates to field of virtual reality more particularly to a kind of near-eye display systems and virtual reality device.
Background technique
Virtual reality (English: Virtual Reality；It referred to as: VR) is a kind of can create and the experiencing virtual world
Computer simulation system, it generates a kind of simulated environment using computer, passes through interactive Three-Dimensional Dynamic what comes into a driver's and entity row
For system emulation be immersed to user in the environment, bring the sensory experience for surmounting real life environment for user.In vision
For aspect, virtual reality technology generates the image of virtual scene using computer equipment, and passes through optical device for image light
Line is transmitted to human eye, allows users to visually experience the virtual scene completely.
Currently, user group of the virtual reality devices such as head-mounted display for myopia, is adjusted by mechanical structure
The distance between display screen and optical lens, so that the focus for the light being emitted from optical lens is not identical, to meet difference
The user of myopic degree, still, this mode not only will increase the complexity of structure design, also will increase weight, while user
Focus also can not necessarily be precisely adjusted to the position for being suitble to oneself, be not easy to user's use.
Therefore, virtual reality device in the prior art exists and will increase because having the mechanical structure for adjusting focal length
The technical issues of complexity and weight of structure design.
Summary of the invention
The object of the present invention is to provide a kind of near-eye display system and virtual reality devices, without passing through mechanical structure pair
Focal length is adjusted, and the virtual reality device for solving the prior art is existing due to having the mechanical structure for adjusting focal length
The technical issues of will increase the complexity and weight of structure design.
In order to achieve the above-mentioned object of the invention, first aspect of the embodiment of the present invention provides a kind of near-eye display system, special
Sign is, including image source, electrically-controlled liquid crystal lens, the first beam splitting lens, magnification eyepiece, human eye diopter detection device, storage
Device and processor；
The light of described image source outgoing is successively transmitted through the electrically-controlled liquid crystal lens, first beam splitting lens and described
Enter human eye after magnification eyepiece；
The human eye diopter detection device is used to detect the human eye diopter of active user；
The storage device is used to store the between human eye diopter and the voltage for being applied to the electrically-controlled liquid crystal lens
One corresponding relationship；
The processor and the human eye diopter detection device, the storage device and the electrically-controlled liquid crystal lens phase
Even, when for determining the human eye diopter of the active user in the human eye diopter detection device, according to described first
Corresponding relationship, it is corresponding with the human eye diopter of the active user for controlling the voltage being applied on the electrically-controlled liquid crystal lens
Voltage, so that the focal length of the near-eye display system is corresponding with the human eye diopter of the active user.
Optionally, described image source is specially LCD display, LED display or OLED display screen.
Optionally, first beam splitting lens is specially the planar lens for being coated with spectro-film.
Optionally, the human eye diopter detection device specifically includes driving motor, infrared light supply, the second beam splitting lens and
Infrared detector；
The driving motor is connected with the infrared light supply, and the driving motor can drive the infrared light supply being emitted
The axis of infrared ray moves up；
The light of infrared light supply outgoing is then anti-by first beam splitting lens transmitted through after second beam splitting lens
Again transmitted through being reflected by human eye after the magnification eyepiece after penetrating, the light reflected by human eye transmitted through after the magnification eyepiece, then
After first beam splitting lens reflection, the infrared detector is finally reflected by second beam splitting lens；
The storage device is also used to store the second corresponding pass between the displacement of the infrared light supply and human eye diopter
System；
The processing implement body is connected with the driving motor and the infrared detector, for detecting the infrared acquisition
The size for the hot spot that device receives, and in the hot spot minimum that the infrared detector receives, determine that the driving motor drives
The displacement of the infrared light supply in the axial direction is moved, and according to second corresponding relationship, determines that the human eye of the active user is bent
Luminosity.
Optionally, the human eye diopter detection device further includes infrared fileter, and the infrared fileter is set to institute
It states in the optical path between infrared detector and first beam splitting lens.
Optionally, second beam splitting lens is specially the planar lens for being coated with spectro-film.
Second aspect of the embodiment of the present invention provides a kind of virtual reality device, including nearly eye described in two sets of first aspects
Display system, wherein the light of a set of outgoing enters the left eye of people, the light of another set of outgoing enters the right eye of people.
One or more technical solution in the embodiment of the present invention, at least has the following technical effect that or advantage:
The electricity that near-eye display system provided in an embodiment of the present invention is applied on electrically-controlled liquid crystal lens due to using control
It presses and avoids answering for due to using the mechanical structure of adjustment focal length increased structure design come the technical solution that focuses automatically
The technical issues of polygamy and weight, alleviates the weight of near-eye display system, simultaneously so reducing the complexity of structure design
Manually adjusted without user, ensure that it is corresponding between the focal length of near-eye display system and the human eye diopter of active user,
To ensure that near-eye display system is supplied to the visual experience of user.
Detailed description of the invention
Fig. 1 is the structure chart of near-eye display system provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to FIG. 1, Fig. 1 is the structure chart of near-eye display system provided in an embodiment of the present invention, as shown in Figure 1, this is close
Eye display system includes image source 101, electrically-controlled liquid crystal lens 102, the first beam splitting lens 103, magnification eyepiece 104, human eye dioptric
Spend detection device 105, storage device 106 and processor 107；
As shown in Figure 1, electrically-controlled liquid crystal lens 102 are arranged on the emitting light path of image source 101, the first beam splitting lens 103
It is arranged on the emitting light path of electrically-controlled liquid crystal lens 102, the emitting light path of the first beam splitting lens 103 is arranged in magnification eyepiece 104
On, the light transmitted through magnification eyepiece 104 can enter human eye, in this way, the light that image source 101 is emitted can successively thoroughly
Electrically-controlled liquid crystal lens 102, the first beam splitting lens 103 and magnification eyepiece 104 were penetrated into human eye；
Human eye diopter detection device 105 is able to detect the human eye diopter of active user, for example, detecting active user
Human eye diopter be 5D；
First be stored in storage device 106 between human eye diopter and the voltage for being applied to the electrically-controlled liquid crystal lens
Corresponding relationship, for example, the voltage for being applied to electrically-controlled liquid crystal lens 102 is 0.3V, in human eye dioptric when human eye diopter is 5D
When degree is 8D, the voltage for being applied to electrically-controlled liquid crystal lens 102 is 0.5V, etc.；In practical applications, according to used automatically controlled
The differences such as material, the technology of liquid crystal lens, technical staff belonging to this field can according to the actual situation, to human eye diopter and
The first corresponding relationship between voltage is demarcated in detail, and to meet the needs of actual conditions, details are not described herein again；
Processor 107 is connected with human eye diopter detection device 105, storage device 106 and electrically-controlled liquid crystal lens 102, In
After the human eye diopter for determining active user by human eye diopter detection device 105, i.e., according to the first corresponding relationship, control
Making the voltage being applied on electrically-controlled liquid crystal lens 102 is voltage corresponding with the human eye diopter of active user, in this way can
So that the focal length of near-eye display system is corresponding with the human eye diopter of active user.
As can be seen that near-eye display system provided in an embodiment of the present invention is saturating due to being applied to electrically-controlled liquid crystal using control
Voltage on mirror avoids increased structure due to using the mechanical structure of adjustment focal length come the technical solution focused automatically
The technical issues of complexity and weight of design, alleviates near-eye display system so reducing the complexity of structure design
Weight, while being manually adjusted without user, it ensure that the focal length of near-eye display system and the human eye diopter of active user
Between it is corresponding, to ensure that near-eye display system is supplied to the visual experience of user.
With continued reference to FIG. 1, in the present embodiment, human eye diopter detection device 105 specifically include driving motor 1051,
Infrared light supply 1052, the second beam splitting lens 1053 and infrared detector 1054, driving motor 1051 are connected with infrared light supply 1052,
Second beam splitting lens 1053 is arranged on the emitting light path of infrared light supply 1052, transmitted through the light meeting of the second beam splitting lens 1053
It is incident on the first beam splitting lens 103, is incident in infrared detector 1054 by the meeting that the second beam splitting lens 1053 reflects.
With continued reference to FIG. 1, the human eye diopter detection device 105 further includes infrared fileter 1055, infrared fileter
1055 are arranged in the optical path between infrared detector 1054 and the first beam splitting lens 103, in the present embodiment, infrared fileter
Between 1055 setting infrared detectors 1054 and the second beam splitting lens 1053, in another embodiment, infrared fileter 1055
It can be set between the second beam splitting lens 1053 and the first beam splitting lens 103, in this way, the outgoing of image source 101 can be filtered off
Light, avoid the detection result to infrared detector 1054 from adversely affecting, guarantee the accuracy of detection result.
In the specific implementation process, image source 101 is specifically as follows LCD display, LED display or OLED and shows
Screen, is subject to the needs for meeting actual conditions, herein with no restrictions.
In the specific implementation process, electrically-controlled liquid crystal lens 102 are to constitute liquid by pressing from both sides one layer of liquid crystal between two pieces of electro-conductive glass
The electro-conductive glass of liquid crystal cell can be etched the shapes such as circular hole or annulus by brilliant box structure, a kind of mode on one side, be formed up and down
The unsymmetric structure of glass electrically-conductive backing plate can generate inhomogeneous field distribution when two panels electro-conductive glass applies voltage in this way, right
Liquid crystal director generates induction, forms effective refractive index distribution heterogeneous, i.e. liquid crystalline sample shows optical lens gradual change folding
Rate gradient distribution is penetrated, the deviation to light is caused, reaches focusing effect, forms focusing optical lenses, another way is in plate
Liquid crystal is injected micro-structure, generates and focus by symmetrical conduction liquid crystal cell internal production at the spherical surface surface structure of protrusion, but
Under electric field regulation, the rotation of liquid crystal optic axis generates the variation of refractive index, realizes the purpose focused.
In the specific implementation process, as shown in Figure 1, in the present embodiment, the first beam splitting lens 103 and the second beam splitting lens
1053 are specifically as follows the planar lens for being coated with spectro-film, spectro-film for example can be can anti-permeable membrane layer, can anti-permeable membrane tool
Body, which can be, selects zinc sulphide (chemical formula: ZnS) with a high refractive index and with low-refraction by plating on plate glass
The film layer that is formed of the materials such as magnesium fluoride (chemical formula: MgF2), specifically, to use zinc sulphide and refraction of the refractive index for 2.3
For the magnesium fluoride that rate is 1.38, G can be passed through | HLHL | A or G | 2LHLHL | the coating structure of A can thoroughly can be anti-to realize
Function, wherein G is glass baseplate, and H is zinc sulphide, L magnesium fluoride, and 2L indicates that two layers of magnesium fluoride of plating, A indicate air, actually answering
In, the ratio of transmitted light and reflected light can be controlled by the thickness of film layer, such as can be by transmitted light and reflected light
Ratio control is 1:1 etc., and details are not described herein again.
In another embodiment, the first beam splitting lens 103 and the second beam splitting lens 1053 can also be by two right-angled edges
The column prism that the inclined-plane of mirror is bonded, can plate on any inclined-plane above-mentioned introduction can anti-permeable membrane layer, herein just not
It repeats again.
In the specific implementation process, magnification eyepiece 104 for example can be convex lens, or can be that by same function
The lens combination of energy, herein with no restrictions.
In the specific implementation process, driving motor 1051, which can be, can drive the infrared light supply 1052 to move in the axial direction
Motor, it should be noted that the connection type between driving motor 1051 and infrared light supply 1052 shown in FIG. 1 is only one
Example, in other embodiments, the connection type between driving motor 1051 and infrared light supply 1052 is to meet actual conditions
Subject to demand, guarantee under the action of driving motor 1051, infrared light supply 1052 can move in the axial direction, axis herein
To the direction for the infrared light for referring to the outgoing of infrared light supply 1052.
In the specific implementation process, the wavelength for the infrared light that infrared light supply 1052 is emitted can be as the skill belonging to this field
Art personnel select according to the actual situation, are subject to the needs for meeting actual conditions, and details are not described herein again.
In the specific implementation process, infrared detector 1054 can generate corresponding figure according to the infrared light detected
Picture, it should be noted that the infrared light wave-length coverage that can be detected of infrared detector 1054 needs to include infrared light supply 1052
The wave-length coverage of the infrared light of outgoing.
In the following section, the operational process of near-eye display system provided in an embodiment of the present invention will be introduced.
With continued reference to FIG. 1, magnification eyepiece 104 can be located at human eye during user uses the near-eye display system
201 front, it is possible, firstly, to first set electrically-controlled liquid crystal lens 102 to be not powered on the state of pressure, the light that image source 101 is emitted
Line is transmitted through human eye 201 is entered after electrically-controlled liquid crystal lens 102, the first beam splitting lens 103 and magnification eyepiece 104, due to automatically controlled
Liquid crystal lens 102 are in off position, so the light that image source 101 is emitted at this time can be amplified lens and be modulated into infinite
Light beam remote or in 201 front 1~2m imaging of human eye, human eye can loosen circumference of eyes muscle as much as possible at this time, it is intended to obtain
Obtain clearly image.
Meanwhile the infrared light that is emitted of infrared light supply 1052 is transmitted through after the second beam splitting lens 1053, then by the first light splitting
Lens 103 reflect, then finally converge at into human eye 201 by pupil of human, crystalline lens etc. after transmiting overdischarge eyepiece 104
Near human eye retina 2011, an approximate confocal system is formed, at this moment, part infrared light can be reflected by human eye 201, reflection
Infrared light afterwards reflexes to the second beam splitting lens 1053 transmitted through magnification eyepiece 104, then by the first beam splitting lens 103, then by
Second beam splitting lens 1053 reflexes to infrared detector 1054, and infrared detector 1054 can be according to the infrared light detected
Image is formed, such as can be a hot spot.
Then, infrared light supply 1052 is driven to be moved forward and backward in the axial direction by driving motor 10, due to infrared light supply 1052
Optical path between infrared detector 1054 changes, so infrared detector 1054 is according to the infrared light institute shape detected
At spot size can also change therewith, in hot spot minimum, the position where infrared detector 1054 is exactly complete confocal
Position, by the second corresponding relationship demarcated between the displacement in the axial direction of infrared light supply 1052 and human eye diopter in advance,
The diopter of human eye can be obtained at this time.
Finally, can be got by the first corresponding relationship should be applied to after obtaining the diopter of human eye
Voltage on electrically-controlled liquid crystal lens 102, change electrically-controlled liquid crystal lens 102 focal length so that near-eye display system can adapt in
The diopter of human eye, so that human eye is able to observe that clearly virtual image.
As can be seen that near-eye display system provided in an embodiment of the present invention is saturating due to being applied to electrically-controlled liquid crystal using control
Voltage on mirror avoids increased structure due to using the mechanical structure of adjustment focal length come the technical solution focused automatically
The technical issues of complexity and weight of design, alleviates near-eye display system so reducing the complexity of structure design
Weight, while being manually adjusted without user, it ensure that the focal length of near-eye display system and the human eye diopter of active user
Between it is corresponding, to ensure that near-eye display system is supplied to the visual experience of user.
Certainly, in practical applications, detect human eye diopter when, can detect several times more, be then averaged or
Person's median, to improve the accuracy of the diopter of human eye detected, details are not described herein again.
Based on the same inventive concept, on the other hand the embodiment of the present invention also provides a kind of virtual reality device, this is virtual existing
Real equipment includes the near-eye display system of two sets of such as preceding sections introductions, wherein the light of a set of outgoing enters the left eye of people, separately
The light of a set of outgoing enters the right eye of people, in this way, when user uses the virtual reality device, due in virtual reality device
Near-eye display system use the voltage that is applied on electrically-controlled liquid crystal lens of control come the technical solution focused automatically, keep away
The technical issues of having exempted from the complexity and weight of increased structure design due to using the mechanical structure of adjustment focal length, so reducing
The complexity of structure design alleviates the weight of near-eye display system, while manually adjusting without user, ensure that close
It is corresponding between the focal length of eye display system and the human eye diopter of active user, to ensure that near-eye display system is supplied to use
The visual experience at family, by the introduction of preceding sections, nearly eye display system can be well understood in technical staff belonging to this field
The structure and its operational process of system, details are not described herein again.
One or more technical solution in the embodiment of the present invention, at least has the following technical effect that or advantage:
The electricity that near-eye display system provided in an embodiment of the present invention is applied on electrically-controlled liquid crystal lens due to using control
It presses and avoids answering for due to using the mechanical structure of adjustment focal length increased structure design come the technical solution that focuses automatically
The technical issues of polygamy and weight, alleviates the weight of near-eye display system, simultaneously so reducing the complexity of structure design
Manually adjusted without user, ensure that it is corresponding between the focal length of near-eye display system and the human eye diopter of active user,
To ensure that near-eye display system is supplied to the visual experience of user.
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
The invention is not limited to specific embodiments above-mentioned.The present invention, which expands to, any in the present specification to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (6)
1. a kind of near-eye display system, which is characterized in that including image source, electrically-controlled liquid crystal lens, the first beam splitting lens, amplification mesh
Mirror, human eye diopter detection device, storage device and processor；
The light of described image source outgoing is successively transmitted through the electrically-controlled liquid crystal lens, first beam splitting lens and the amplification
Enter human eye after eyepiece；
The human eye diopter detection device is used to detect the human eye diopter of active user；
The storage device is used to store first pair between human eye diopter and the voltage for being applied to the electrically-controlled liquid crystal lens
It should be related to；
The processor is connected with the human eye diopter detection device, the storage device and the electrically-controlled liquid crystal lens, uses
When determining the human eye diopter of the active user in the human eye diopter detection device, according to the described first corresponding pass
System, controlling the voltage being applied on the electrically-controlled liquid crystal lens is voltage corresponding with the human eye diopter of the active user,
So that the focal length of the near-eye display system is corresponding with the human eye diopter of the active user；
The human eye diopter detection device specifically includes driving motor, infrared light supply, the second beam splitting lens and infrared detector；
The driving motor is connected with the infrared light supply, and the driving motor can drive the infrared light supply infrared in outgoing
The axis of line moves up；
The light of infrared light supply outgoing is transmitted through after second beam splitting lens, then by after first beam splitting lens reflection
Again transmitted through being reflected after the magnification eyepiece by human eye, the light reflected by human eye is transmitted through after the magnification eyepiece, then by institute
After stating the reflection of the first beam splitting lens, the infrared detector is finally reflected by second beam splitting lens；
The storage device is also used to store the second corresponding relationship between the displacement of the infrared light supply and human eye diopter；
The processing implement body is connected with the driving motor and the infrared detector, connects for detecting the infrared detector
The size of the hot spot received, and in the hot spot minimum that the infrared detector receives, determine driving motor driving institute
The displacement of infrared light supply in the axial direction is stated, and according to second corresponding relationship, determines the human eye diopter of the active user.
2. near-eye display system as described in claim 1, which is characterized in that described image source is specially LCD display, LED
Display screen or OLED display screen.
3. near-eye display system as described in claim 1, which is characterized in that first beam splitting lens is specially to be coated with light splitting
The planar lens of film.
4. near-eye display system as claimed in any one of claims 1-3, which is characterized in that the human eye diopter detection dress
Setting further includes infrared fileter, and the infrared fileter is set between the infrared detector and first beam splitting lens
In optical path.
5. near-eye display system as claimed in claim 4, which is characterized in that second beam splitting lens is specially to be coated with light splitting
The planar lens of film.
6. a kind of virtual reality device, which is characterized in that aobvious including two sets of nearly eyes as described in claim any in claim 1-5
Show system, wherein the light of a set of outgoing enters the left eye of people, the light of another set of outgoing enters the right eye of people.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610851902.5A CN106444028B (en) | 2016-09-27 | 2016-09-27 | A kind of near-eye display system and virtual reality device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610851902.5A CN106444028B (en) | 2016-09-27 | 2016-09-27 | A kind of near-eye display system and virtual reality device |
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| CN106444028A CN106444028A (en) | 2017-02-22 |
| CN106444028B true CN106444028B (en) | 2019-11-19 |
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| CN111281331B (en) * | 2020-04-02 | 2023-02-07 | 京东方科技集团股份有限公司 | Vision detection method and device and wearable display device |
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