CN107277496B - Nearly eye field display system and control circuit - Google Patents
Nearly eye field display system and control circuit Download PDFInfo
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- CN107277496B CN107277496B CN201710582149.9A CN201710582149A CN107277496B CN 107277496 B CN107277496 B CN 107277496B CN 201710582149 A CN201710582149 A CN 201710582149A CN 107277496 B CN107277496 B CN 107277496B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/24—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type involving temporal multiplexing, e.g. using sequentially activated left and right shutters
Abstract
The present invention proposes a kind of nearly eye field display system and control circuit, wherein system includes: N layers of holographic element, the corresponding optical waveguide of every layer of holographic element and imaging device；Every layer of holographic element includes the holographic input subcomponent occurred in pairs and holographic output subcomponent；Within a display cycle, holography of the imaging device according to the preset time interval into i-th layer of holographic element inputs subcomponent throw light, holography input subcomponent by the light of projection be incident on i-th layer corresponding to conduct in optical waveguide, reach i-th layer of holographic output subcomponent, based on being time-multiplexed, the light that each layer holography output subcomponent is exported carries out fusion output, to form 3D rendering at human eye.By the system, can true light field in simulated three-dimensional space, realize nature 3D display, solve the problems, such as influx branch hazard bring visual fatigue and dizziness in the prior art.
Description
Technical field
The present invention relates to technical field of stereoscopic vision more particularly to a kind of nearly eye field display systems and control circuit.
Background technique
With virtual reality (Virtual Reality, VR) equipment and augmented reality (Augmented Reality, AR)
The development of equipment, nearly eye shows (Near-to-Eye Display, NED), and technology is come into being, and is increasingly becoming research hotspot.
In current nearly eye display technology, in user's wearing augmented reality equipment (for example, HoloLens of Microsoft) it
Afterwards, shown 3D object is the stereoscopic vision formed and the images of left and right eyes to user shows different images respectively.
However, there is influx branch hazard in the 3D display technology based on binocular stereo vision, so that when with the head of a household
Between wearable device when be easy to feel visual fatigue and dizziness.Therefore, how to solve the problems, such as that this becomes in nearly eye display technology urgently
Problem to be solved.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, the first purpose of this invention is to propose a kind of nearly eye field display system, in simulated three-dimensional space
True light field, realize nature 3D display, solve asking for influx branch hazard bring visual fatigue and dizziness in the prior art
Topic.
Second object of the present invention is to propose a kind of control circuit.
In order to achieve the above object, first aspect present invention embodiment proposes a kind of nearly eye field display system, comprising:
N layers of holographic element, the corresponding optical waveguide of every layer of holographic element and imaging device；Wherein, every layer of holographic element packet
The holographic input subcomponent occurred in pairs and holographic output subcomponent are included, N is integer；
Within a display cycle, the imaging device is complete into i-th layer of holographic element according to the preset time interval
Breath input subcomponent throw light, the holographic input subcomponent by the light of projection be incident on i-th layer corresponding to optical waveguide
In conducted, reach i-th layer of holographic output subcomponent, the light exported based on each layer holography output subcomponent that is time-multiplexed
Line carries out fusion output, to form 3D rendering at human eye；Wherein, 1≤i≤N, N >=2；I and N is integer；
Wherein, N-1 layers remaining when i-th layer of holographic input subcomponent and in running order holographic output subcomponent
Holographic input subcomponent and holographic output subcomponent be in pellucidity；The display cycle is less than the refresh time of human eye.
The nearly eye field display system of the embodiment of the present invention passes through setting imaging device, N layers of holographic element and every layer
The corresponding optical waveguide of holographic element, every layer of holographic element include the holographic input subcomponent occurred in pairs and holographic output member
Part, within a display cycle, holographic input of the imaging device according to the preset time interval into each layer of holographic element is sub
Element throw light, the light of projection is incident in corresponding optical waveguide by holography input subcomponent to be conducted, and is reached holographic
Subcomponent is exported, the light that each layer holography output subcomponent is exported carries out fusion output based on being time-multiplexed, at human eye
Form 3D rendering.Thereby, it is possible to the true light fields in simulated three-dimensional space, realize nature 3D display, and user is avoided to see for a long time
Visual fatigue and dizziness when seeing promote user experience.
In order to achieve the above object, second aspect of the present invention embodiment proposes a kind of control circuit, for first aspect reality
The display for applying nearly eye field display system described in example is controlled.
The control circuit of the embodiment of the present invention is controlled by the display to nearly eye field display system, can be simulated
True light field in three-dimensional space realizes nature 3D display, and visual fatigue and dizziness when user being avoided to watch for a long time are promoted and used
Family experience.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the 3D display imaging schematic diagram based on binocular stereo vision；
Fig. 2 is the structural schematic diagram for the nearly eye field display system that one embodiment of the invention proposes；
Fig. 3 is the structural schematic diagram of imaging device；
Fig. 4 is a structural schematic diagram when optical waveguide being arranged between the holographic element of adjacent two layers；
Fig. 5 is process chart of the nearly eye field display system in first time；
Fig. 6 is process chart of the nearly eye field display system in the second time；
Fig. 7 is the workflow schematic diagram of the nearly eye field display system of the present embodiment；
Fig. 8 is the structural schematic diagram for the control circuit that one embodiment of the invention proposes.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the nearly eye field display system and control circuit of the embodiment of the present invention are described.
Due to the existing 3D display technology based on binocular stereo vision, the focusing distance of user's right and left eyes on a display screen
It is not identical as influx distance of the right and left eyes at 3D display, that is, there are problems that influx adjusts conflict, needs the left and right of user
Eye constantly adjusts between focusing distance and influx distance, as shown in Figure 1, being easy to cause user's visual fatigue and dizziness.
In view of the above-mentioned problems, the embodiment of the present invention proposes a kind of nearly eye field display system, it is aobvious to can be realized nature 3D
Show, solves the problems, such as visual fatigue and dizziness in the prior art.
Fig. 2 is the structural schematic diagram for the nearly eye field display system that one embodiment of the invention proposes.
As shown in Fig. 2, the nearly eye field display system 10 includes: N layers of holographic element 101, every layer of correspondence of holographic element 101
Optical waveguide 102 and imaging device 103.Wherein,
Every layer of holographic element 101 includes the holographic input subcomponent 1011 and holographic output subcomponent 1012 occurred in pairs,
And the holographic input subcomponent 1011 in every layer of holographic element 101 and holographic output subcomponent 1012 are automatically controlled diffraction grating.
The first end of corresponding optical waveguide 102 is arranged in holographic input subcomponent 1011 in every layer of holographic element 101, and first end is light
Line input terminal；The second end of corresponding optical waveguide 102 is arranged in holography output subcomponent 1012, and second end is light output
End, the light of output are able to enter human eye.In the present embodiment, when i-th layer of holographic input subcomponent 1011 and holographic output member
When part 1012 is in running order, remaining N-1 layers of holographic input subcomponent 1011 and holographic output subcomponent 1012 are in
Pellucidity, the holographic element 101 under pellucidity do not work.
In the present embodiment, every layer of holographic element 101 can be automatically controlled, and specifically, synchronization is sub to i-th layer of holographic input
Element 1011 and holographic output subcomponent 1012 power on, i-th layer of holographic input subcomponent 1011 and holographic output member after powering on
Part 1012 is in running order, and the holographic input subcomponent 1011 of N-1 layers of residue and holographic output subcomponent 1012 do not power on,
It is in pellucidity, the holographic element 101 under pellucidity does not work, that is to say, the holographic element 101 of N-1 layers of residue
It does not work, passes through above-mentioned processing, it is ensured that only have one layer of holographic element 101 in running order at current time, so
N layers of holographic element 101 replace in running order in the entire display cycle.
Within a display cycle, imaging device 103 is according to the preset time interval into i-th layer of holographic element 101
The light of projection is incident on corresponding to i-th layer by holography input 1011 throw light of subcomponent, holography input subcomponent 1011
It is conducted in optical waveguide 102, reaches i-th layer of holographic output subcomponent 1012.By taking the 1st layer of holographic element 101 as an example, light
Line is entered in corresponding optical waveguide 102 by the holographic input subcomponent 1011 in the 1st layer of holographic element 101, then in light
Light transmission is carried out in waveguide 102, then by holographic output 1012 output light of subcomponent in the 1st layer of holographic element 101.
Time-division multiplex technology is a kind of intersection digit pulse by different channels or time slot, while in the same communication matchmaker
The technology of multiple digitalized datas, voice and video signal etc. is transmitted on body.It is needed using time-division multiplex technology with each road signal
Premised on not overlapping on a timeline, and in the present embodiment, within a display cycle, control according to the preset time interval
Different holographic elements 101 works, and only one layer of holographic element 101 is in running order every time, so as to guarantee that each layer is complete
The light that holographic input subcomponent 1012 in breath element 101 exports is not interfere with each other.It therefore, can be at one in the present embodiment
The light exported in display cycle based on each layer holography output subcomponent 1012 of time-division multiplex technology carries out fusion output, with
3D rendering is formed at human eye.Wherein, 1≤i≤N, N >=2；I and N is integer.
Wherein, the display cycle is less than the refresh time of human eye, that is, display frequency is greater than the refreshing frequency of human eye.At
As the time interval of device 103 to holographic input 1011 throw light of subcomponent can be according to the layer of display cycle and holographic element
Number N is preset, and the present invention is not specifically limited.
Fig. 3 is the structural schematic diagram of imaging device.As shown in figure 3, imaging device 103 includes: control unit 1031, holography
Control unit 1032, image rendering unit 1033, display unit 1034 and the projecting cell 1035 of element.Wherein,
Control unit 1031 is connect with the control unit 1032 of holographic element and image rendering unit 1033, image rendering
Unit 1033 is connect with display unit 1034.
Control unit 1031, for sending the first instruction, while the control to holographic element to image rendering unit 1033
Unit 1032 sends the second instruction.
Image rendering unit 1033 for carrying out image rendering according to the preset time interval according to the first instruction, and leads to
Display unit 1034 is crossed to be shown.
The control unit 1032 of holographic element, for controlling holographic element according to the preset time interval according to the second instruction
I-th layer of holographic element in 101 is in running order, and remaining N-1 layers of holographic element is in pellucidity.Holographic element
It include holographic input subcomponent control unit and holographic output subcomponent control unit in control unit 1032.
Display unit 1034, for by projecting cell 1035 by i-th layer of holographic node is projected at the light of image
In holographic input subcomponent in part.
In a kind of possible implementation of the embodiment of the present invention, one can be respectively set for every layer of holographic element 101
The number of plies of individual optical waveguide 102, optical waveguide 102 is N, and N is integer, as shown in Figure 2.Distinguish when for every layer of holographic element 101
Holographic input subcomponent 1011 and holographic output member when one individual optical waveguide 102 is set, in every layer of holographic element 101
Part 1012 is the automatically controlled diffraction grating of reflection-type.The light for reaching holographic input subcomponent 1011 reflects here, with one
Determine angle to reflex in optical waveguide.
It optionally, can also be in the holographic node of adjacent two layers in the alternatively possible implementation of the embodiment of the present invention
One optical waveguide 102 is set between part 101, and the number of plies of optical waveguide 102 is N-1, and N is integer, as shown in Figure 4.When adjacent two
When one optical waveguide 102 is set between the holographic element 101 of layer, the 1st layer of holographic element 101 and the 2nd layer of holographic element 101
The optical waveguide 102 between layers 1 and 2 is arranged in multiplexing.
It should be noted that except layers 1 and 2 holographic element 101 need be multiplexed setting layers 1 and 2 it
Between optical waveguide 102 except, to the independent corresponding optical waveguide 102 of every layer of holographic element of n-th layer 101 since the 3rd layer.Specifically
Ground, the corresponding 2nd layer of optical waveguide 102 of the 3rd layer of holographic element 101, the corresponding 3rd layer of optical waveguide 102 of the 4th layer of holographic element 101, with this
Analogize, the corresponding N-1 layers of optical waveguide 102 of n-th layer holographic element 101.
Wherein, the holographic input subcomponent 1011 in Fig. 4 in the 1st layer of holographic element 101 and holographic output subcomponent 1012
Holographic input subcomponent 1011 and holographic output subcomponent for the automatically controlled diffraction grating of transmission-type, in the 2nd layer of holographic element 101
1012 be the automatically controlled diffraction grating of reflection-type.The light for reaching the 1st layer of holographic input subcomponent 1011 is transmitted through in optical waveguide, and
The light for reaching the holographic input subcomponent 1011 of other layers, reflects at holography input subcomponent 1011, with certain angle
Degree reflexes in optical waveguide, that is to say, that the holographic element 101 since the 2nd layer to n-th layer is the automatically controlled diffraction light of reflection-type
Grid.
It should be noted that being entered to be totally reflected light in optical waveguide 102 by holography input subcomponent 1011
The angle being mapped in optical waveguide 102 will meet the condition of total reflection, i.e. incident angle is greater than critical angle.
By setting multilayer holographic element 101 and optical waveguide 102, it is capable of forming Multi-level display, passes through time division multiplexing, human eye
It can observe spatially there are multiple display images of certain intervals simultaneously, multiple display images pass the field information of object
It is directed at human eye, can be realized the natural 3D display of the object in true environment, it is tired to solve generation eyes when human eye wears AR equipment
The problem of labor and dizziness.
In order to clearly illustrate the present embodiment nearly eye field display system formed hologram image process, below with
Progress is specific for nearly eye field display system includes two layers of holographic element, an optical waveguide is arranged between two layers of holographic element
Explanation.Since the nearly eye field display system includes two layers of holographic element, then within a display cycle, imaging device only need to be
Holographic input subcomponent throw light of two times into holographic element.
Fig. 5 is process chart of the nearly eye field display system in first time.As shown in figure 5, at the first time, control
Holographic input subcomponent control unit of the unit into the control unit of holographic element sends the second instruction, with the holographic input of control
Subcomponent control unit keeps holographic input subcomponent 1 in running order, and holographic input subcomponent 2 is in pellucidity.Together
When, control unit issues the first instruction to image rendering unit, and so that image rendering unit is carried out image rendering according to the first instruction,
And rendering image is shown on display unit, and then the light for rendering image is projected into holographic input member by projecting cell
On part 1.Holography input subcomponent 1 is the automatically controlled diffraction grating of transmission-type, after light reaches in holographic input subcomponent 1, with one
Determine angle to enter in optical waveguide.Reflection of the light in optical waveguide meets total reflection condition, so that light conducts in optical waveguide,
It eventually arrives at holographic output subcomponent 1.Control unit controls holography output subcomponent control unit, so that holographic defeated
Subcomponent 1 is in running order out, and holographic output subcomponent 2 is in pellucidity.Holography output subcomponent 1 will pass through light wave
The light for leading conduction carries out coupling output, and human eye is made to receive the image that display unit is shown.
Fig. 6 is process chart of the nearly eye field display system in the second time.As shown in fig. 6, in the second time, control
Holographic input subcomponent control unit of the unit into the control unit of holographic element sends the second instruction, with the holographic input of control
Subcomponent control unit keeps holographic input subcomponent 2 in running order, and holographic input subcomponent 1 is in pellucidity.Together
When, control unit issues the first instruction to image rendering unit, and so that image rendering unit is carried out image rendering according to the first instruction,
And rendering image is shown on display unit, and then the light for rendering image is projected into holographic input member by projecting cell
On part 2.Holography input subcomponent 2 is the automatically controlled diffraction grating of reflection-type, after light reaches in holographic input subcomponent 2, with one
Determine angle to be reflected into optical waveguide.Reflection of the light in optical waveguide meets total reflection condition, so that light passes in optical waveguide
It leads, eventually arrives at holographic output subcomponent 2.Control unit controls holography output subcomponent control unit, so that entirely
Breath output subcomponent 2 is in running order, and holographic output subcomponent 1 is in pellucidity.Holography output subcomponent 2 will pass through
The light of optical waveguide conduction carries out coupling output, and human eye is made to receive the image that display unit is shown.
Later, the light that the holographic output subcomponent based on time division multiplexing first layer and the second layer is exported merge defeated
Out, 3D rendering is formed at human eye.
The nearly eye field display system of the present embodiment, by using time-multiplexed method, control unit controls holographic node
The control unit of part, so that holographic input/output subcomponent 1 and holographic input/output in the control unit of holographic element
Element 2 works alternatively, and the frequency of switching is greater than 2 times of the perceptible refreshing frequency of human eye, i.e. the refreshing frequency of ordinary human is
30Hz, the frequency of switching need to be greater than 60Hz, and human eye can observe that exporting subcomponent 1 and 2 by holography couples simultaneously as a result,
The image of output.Since holography output subcomponent 1 and 2 spatially has certain interval, double-layer showing, Ke Yitong are formd
It crosses the specific image of image rendering unit rendering and enters human eye to simulate nature light field, provide certain human eye focal adjustments model
It encloses, adjusts conflict, relieving eye strain and dizziness so as to solve influx to a certain extent.
Fig. 7 is the workflow schematic diagram of the nearly eye field display system of the present embodiment.As shown in fig. 7, control unit to
Holographic input/output subcomponent control unit sends the second instruction, while sending the first instruction to image rendering unit.It is holographic defeated
Enter/export subcomponent control unit control holography input/output subcomponent i (i=1,2,3 ..., N) successively to work alternatively, every time
Only one group of holography input/output subcomponent work, and other holographic input/output subcomponents are in pellucidity.Image wash with watercolours
Dye unit renders image according to the first instruction, and is shown by display unit.Display unit passes through projecting cell
The light for rendering image is projected to in running order holographic input subcomponent i, and inputs subcomponent i coupling by holographic
Optical waveguide is entered to be conducted.Light conduction to holography exports subcomponent i, and couples output to human eye.Repeat the above process N
It is secondary to terminate the 3D rendering that output is formed up to first display cycle, wherein N is the number of plies of holographic element.It repeats the above process
Until the last one display cycle terminates.
It is worked alternatively by the way that holographic input/output subcomponent 1 to N is arranged, human eye can be observed simultaneously to be exported by holography
Subcomponent 1 realizes Multi-level display, and then the true light field in simulated three-dimensional space, realizes nature 3D to the image of N coupling output
Display solves the problems, such as the visual fatigue and dizziness generated when human eye wears augmented reality equipment for a long time.
The nearly eye field display system of the present embodiment passes through setting imaging device, N layers of holographic element and every layer of holography
The corresponding optical waveguide of element, every layer of holographic element include that the holographic input subcomponent occurred in pairs and holography export subcomponent,
In one display cycle, holographic input subcomponent of the imaging device according to the preset time interval into each layer of holographic element is thrown
Light is penetrated, the light of projection is incident in corresponding optical waveguide by holography input subcomponent to be conducted, and holographic output is reached
Element, based on being time-multiplexed, the light that each layer holography output subcomponent is exported carries out fusion output, to form 3D at human eye
Image.Thereby, it is possible to the true light fields in simulated three-dimensional space, realize nature 3D display, view when user being avoided to watch for a long time
Feel fatigue and dizziness, promotes user experience.
In order to realize above-described embodiment, the present invention also proposes a kind of control circuit, for close described in previous embodiment
The display of eye field display system is controlled.
Fig. 8 is the structural schematic diagram for the control circuit that one embodiment of the invention proposes.
As shown in figure 8, the control circuit 80 includes: governor circuit 801, first control circuit 802 and the second control electricity
Road 803.Wherein,
Governor circuit 801 is sent out for driving imaging device, and to first control circuit 802 and second control circuit 803
Send control instruction.
Wherein, control instruction includes the display cycle.
In a kind of possible implementation of the embodiment of the present invention, governor circuit 801 is also used to first control circuit
802 and second control circuit 803 when sending control instruction, image rendering unit into imaging device sends render instruction, with
Image rendering unit is set to carry out image rendering according to render instruction.
First control circuit 802, for controlling the holographic input subcomponent of holographic element.
Specifically, first control circuit 802 for controlling i-th layer of holography according to the preset time interval within the display cycle
Holographic input subcomponent in element is in running order, and the holographic input member in control N-1 layers of holographic element of residue
Part is in pellucidity.Wherein, 1≤i≤N, N >=2；I and N is integer.
Second control circuit 803, for controlling the holographic output subcomponent in holographic element.
Specifically, second control circuit 803 is used for according to control instruction, according to i-th layer of holographic element of time interval controls
In holographic output subcomponent it is in running order, and holography in control N-1 layer holographic element of residue exports at subcomponent
The light that holographic output subcomponent in pellucidity, and within a display cycle based on every layer of time division multiplexing is exported into
Row fusion output, to form 3D rendering at human eye.
The control circuit of the present embodiment is controlled by the display to nearly eye field display system, can simulate three-dimensional
True light field in space realizes nature 3D display, and visual fatigue and dizziness when user being avoided to watch for a long time promote user's body
It tests.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing custom logic function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction
The instruction fetch of row system, device or equipment and the system executed instruction) it uses, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium ", which can be, any may include, stores, communicates, propagates or pass
Defeated program is for instruction execution system, device or equipment or the dress used in conjunction with these instruction execution systems, device or equipment
It sets.The more specific example (non-exhaustive list) of computer-readable medium include the following: there is the electricity of one or more wirings
Interconnecting piece (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.Such as, if realized with hardware in another embodiment, following skill well known in the art can be used
Any one of art or their combination are realized: have for data-signal is realized the logic gates of logic function from
Logic circuit is dissipated, the specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene can compile
Journey gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, each functional unit in each embodiment of the present invention can integrate in a processing module
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..Although having been shown and retouching above
The embodiment of the present invention is stated, it is to be understood that above-described embodiment is exemplary, and should not be understood as to limit of the invention
System, those skilled in the art can be changed above-described embodiment, modify, replace and become within the scope of the invention
Type.
Claims (8)
1. a kind of nearly eye field display system characterized by comprising
N layers of holographic element, the corresponding optical waveguide of every layer of holographic element and imaging device；Wherein, every layer of holographic element includes into
Holographic input subcomponent and holographic output subcomponent to appearance, N is integer；
Within a display cycle, holography of the imaging device according to the preset time interval into i-th layer of holographic element is defeated
Enter subcomponent throw light, the holographic input subcomponent by the light of projection be incident on i-th layer corresponding in optical waveguide into
Row conduction reaches i-th layer of holographic output subcomponent, based on be time-multiplexed light that each layer holography output subcomponent is exported into
Row fusion output, to form 3D rendering at human eye；Wherein, 1≤i≤N, N >=2；I and N is integer；
Wherein, when i-th layer of holographic input subcomponent and in running order holographic output subcomponent, remaining N-1 layers complete
Breath input subcomponent and holographic output subcomponent are in pellucidity；The display cycle is less than the refresh time of human eye.
2. nearly eye field display system according to claim 1, which is characterized in that the holographic input in every layer of holographic element
Subcomponent and holographic output subcomponent are automatically controlled diffraction grating.
3. nearly eye field display system according to claim 2, which is characterized in that
An individual optical waveguide is respectively set for every layer of holographic element；The number of plies of the optical waveguide is N；
Alternatively, an optical waveguide is arranged between the holographic element of adjacent two layers, the number of plies of the optical waveguide is N-1.
4. nearly eye field display system according to claim 3, which is characterized in that
When an optical waveguide is arranged between the holographic element in adjacent two layers, the 1st layer of the holographic element is complete with the 2nd layer
The optical waveguide between layers 1 and 2 is arranged in breath element multiplexing；
Wherein, the holographic input subcomponent in the 1st layer of holographic element and holographic output subcomponent are the automatically controlled diffraction grating of transmission-type,
Holographic input subcomponent and holographic output subcomponent in the 2nd layer of holographic element are the automatically controlled diffraction grating of reflection-type.
5. nearly eye field display system according to claim 1-4, which is characterized in that in every layer of holographic element
The first end of corresponding optical waveguide is arranged in holography input subcomponent, and the first end is light input terminal；Holography output son member
The second end of corresponding optical waveguide is arranged in part, and the second end is light output end, and the light of output enters human eye.
6. nearly eye field display system according to claim 1-4, which is characterized in that the imaging device packet
Include: control unit, the control unit of holographic element, image rendering unit, display unit and projecting cell, described control unit with
The control unit and image rendering unit of holographic element connect, and described image rendering unit is connect with the display unit；
Control unit, for sending the first instruction to described image rendering unit, while to the control unit of the holographic element
Send the second instruction；
Described image rendering unit for carrying out image rendering according to the preset time interval according to first instruction, and is led to
The display unit is crossed to be shown；
The control unit of the holographic element, for controlling holographic element according to the preset time interval according to second instruction
In i-th layer of holographic element it is in running order, remaining N-1 layers of holographic element is in pellucidity；
The display unit, for by the projecting cell by projected at the light of image in i-th layer of holographic element
Holographic input subcomponent on.
7. a kind of control circuit, which is characterized in that for nearly eye field display system described in any one of claims 1-6
Display is controlled；Wherein, the control circuit includes:
The first control circuit of holographic input subcomponent for driving the governor circuit of imaging device, for controlling holographic element
And the second control circuit for controlling the holographic output subcomponent in holographic element；
The main control circuit, for sending control instruction to the first control circuit and the second control circuit；It is described
Control instruction includes the display cycle；
The first control circuit, for controlling i-th layer of holographic element according to the preset time interval within the display cycle
In holographic input subcomponent it is in running order, and holography in control N-1 layer holographic element of residue inputs at subcomponent
In pellucidity；Wherein, 1≤i≤N, N >=2；I and N is integer；
The second control circuit is used for according to the control instruction, according in i-th layer of holographic element of the time interval controls
Holographic output subcomponent it is in running order, and holography in control N-1 layer holographic element of residue exports subcomponent and is in
Pellucidity, the light that the holographic output subcomponent within a display cycle based on every layer of time division multiplexing is exported are merged
Output, to form 3D rendering at human eye.
8. control circuit according to claim 7, which is characterized in that the main control circuit is also used to described
When one control circuit and the second control circuit send the control instruction, the image rendering unit into imaging device is sent
Render instruction, so that described image rendering unit carries out image rendering according to the render instruction.
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| CN109683320A (en) | 2019-02-20 | 2019-04-26 | 京东方科技集团股份有限公司 | Display device and display methods |
| CN109725426B (en) * | 2019-02-26 | 2022-04-22 | 清华大学深圳研究生院 | Volume holographic waveguide display device |
| CN112578574B (en) * | 2019-09-30 | 2022-04-05 | 中山大学 | Optical waveguide optical field display system based on grating |
| CN110954983B (en) * | 2019-12-18 | 2021-05-11 | 京东方科技集团股份有限公司 | Colored light waveguide structure and display device |
| CN111221126B (en) * | 2020-01-17 | 2022-01-14 | 歌尔股份有限公司 | Imaging system, imaging method and virtual reality equipment |
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