CN106226902A - Display device is worn alternately for what augmented reality showed - Google Patents

Abstract

It is an object of the invention to provide and wear display device alternately for what augmented reality showed, this device has binocular, big visual field, feature that light efficiency is high.For solving above-mentioned technical problem, the present invention is realized by below scheme: a kind of display device of wearing alternately shown for augmented reality includes: image collecting device, microprocessor, illuminator, graphics device, expand device, light splitting device, binocular waveguide display device；Image collecting device includes left eye photographic head, right eye photographic head；Binocular waveguide display device includes left vision light guiding surface；Right vision light guiding surface；Left eye membrane array；Right eye membrane array；Binocular waveguide；Left eye extinction sheet；Right eye extinction sheet.

Description

Display device is worn alternately for what augmented reality showed

Technical field

The present invention relates to augmented reality field, existing being used for strengthens now the extension of a kind of fiber waveguide based on membrane array Show in fact wears display device alternately.

Background technology

Head-mounted display is a kind of brand-new modern times integrating photoelectron, microelectronics, precision optical machinery and signal processing Display Technique.Have a wide range of applications in fields such as military combat, city anti-terrorism, clinical treatments.

Prior art US6747611B1, in invention in 2004, uses prism as wearing display Optical devices, it is possible to achieve The purpose of augmented reality.Its shortcoming is that prism thickness is the thickest, and the monocular angle of visual field is the least, is unfavorable for actually used.

Prior art PCT817033103822, in invention in 2003, uses LED to reflect with reflecting mirror, it is possible to achieve Illumination.Its shortcoming be device complicated, cannot be by whole for incident illumination polarizations, capacity usage ratio is the lowest.

Prior art US20080285140A1 and invention in 2008, use guide technology to carry out light transmission and control.It lacks Point is to use binocular structure to need two set display device, illumination apparatus, causes head-wearing display device heavier

Summary of the invention

It is an object of the invention to provide and wear display device alternately for what augmented reality showed, this device has binocular The features such as display, big visual field, light efficiency is high, display effect is clear.

For solving above-mentioned technical problem, the present invention is realized by below scheme: a kind of friendship shown for augmented reality Wear display device mutually to include: image collecting device, microprocessor, illuminator, graphics device, expand device, polarization Light-dividing device, binocular waveguide display device；

Image collecting device includes left eye photographic head, right eye photographic head；

Binocular waveguide display device includes left vision light guiding surface；Right vision light guiding surface；Left eye membrane array；Right eye is thin Membrane array；Binocular waveguide；Left eye extinction sheet；Right eye extinction sheet；

Preferably, it is provided with attachment structure for installing image display device outside described binocular waveguide display device；Institute State image collecting device and be connected to microprocessor by video line；Described microprocessor connects graphics device；Described figure The image exiting surface front of shape display device is provided with light splitting device；The light of described illuminator injects polarization spectro dress Putting, described light splitting device one end is provided with and expands device；It is provided with binocular waveguide before the described exiting surface expanding device to show Showing device, and will correct after optical image through left vision light guiding surface；Right vision light guiding surface, respectively to binocular waveguide display dress Put two ends to transmit；Described illuminator realizes the s polarized light that outgoing polarizes entirely；Described graphics device is LCOS display screen, LCOS display screen display is divided into homalographic two parts to show through microprocessor, and display content is completely the same；Described binocular waveguide Display device Yanzhong axisymmetrical is provided with images of left and right eyes transmission and display structure；Its left eye transmission and display Structural assignments are left Eye vision light guiding surface, binocular waveguide, left eye membrane array, binocular waveguide, left eye extinction sheet；Its right eye transmission and display structure row Cloth is right vision light guiding surface, binocular waveguide, right eye membrane array, binocular waveguide, right eye extinction sheet；Described binocular waveguide shows Showing device two bottom is respectively arranged with left eye extinction sheet, right eye extinction sheet.

Preferably, described left vision light guiding surface is reflecting mirror based on total reflection principle or based on holographic optics complete Breath optical element realizes；Described left vision light guiding surface is arranged in binocular waveguide display device, left vision light guiding surface and warp The shadow image direction of propagation expanded in device is provided with certain angle, the propagation path phase of the size of its angle and shadow image Association；Described right vision light guiding surface is consistent with left vision light guiding surface material；Described right vision light guiding surface regards with left eye Feel that light guiding surface prolongs binocular waveguide display device setting substantially symmetrical about its central axis.

Preferably, the thin film of the stacking that described left eye membrane array is formed by stacking by two or more film parallel Group；Described thin film is multilayer nanoscale film system processing and fabricating, and its technique is that a thin film is adding man-hour to every thin film Thickness and refractive index are measured in real time, and error produced by previously deposited thin film being controlled by film thickness monitoring system will The thickness of thin film to be deposited is modified, by physical deposition, chemical deposition process by film preparation thin film；Described left eye Membrane array is plated on tilted-putted transparent dielectric substrate according to certain angle, to ensure to be formed continuously in the design angle of visual field Optical image imaging region without ghost image free of discontinuities；Described left eye membrane array is consistent with the material of right eye membrane array；Described Left eye membrane array and right eye membrane array prolong binocular waveguide display device setting substantially symmetrical about its central axis.

Preferably, described in expand device and be made up of the first battery of lens and the second battery of lens, the first battery of lens and the second lens Group is processed by simple lens or balsaming lens group.

Preferably, it is provided with Polarization-Sensitive film system in described light splitting device structure；Polarize through illuminator incidence s Optical projection is to graphics device, then outgoing p-polarization light after graphics device reflects, and transmission-polarizing light-dividing device enters and expands Bundle device.

Preferably, described illuminator includes light source, the first reflection unit, the second reflection unit, full polarization device；Described One reflection unit is arranged on the positive front end of light source exiting surface；Described second reflection unit is arranged on the rear end of light source exiting surface；The The free form surface structure of opening centered by two reflection units；Aperture position is consistent with the exiting surface of light source；Described light source sends Light is being reflected into full polarization device through the second reflection unit after the first reflection unit is by light line reflection by light, and its purpose exists In the light collimation that light source is launched and inject the full polarization device of entrance uniformly, reduce due to light intensity and light weak produced by hot spot or Halation.

Preferably, it is provided with spread out prism, medium air sheet heap, the second folding of the first folding in described full polarization device to spread out prism；Institute State the first folding prism that spreads out to be made up of refracting prisms and the diffraction surfaces that is arranged on refracting prisms；Described second folding spreads out prism by reflecting Prism and the diffraction surfaces composition being arranged on refracting prisms；Described medium air sheet pile structure is by multi-layer transparent material with empty The alternating structure superposition composition of gas-bearing formation；Its alternating structure is consistent with the area coverage of light.

Accompanying drawing explanation

Fig. 1 is the structural representation of this technical products；

Fig. 2 is the schematic flow sheet of this technical products；

Fig. 3 is the binocular waveguide display device structure schematic top plan view of this technical products；

Fig. 4 is the binocular waveguide display device structure front elevational schematic of this technical products；

Fig. 5 be this technical products expand apparatus structure schematic diagram；

Fig. 6 is the image display device display effect figure of this technical products；

Fig. 7 is the illuminator structure schematic diagram of this technical products；

Fig. 8 is the full polarization device structural representation of this technical products；

Fig. 9 is that the folding of this technical products spreads out prism structure schematic diagram；

Figure 10 is that the folding of this technical products spreads out optical path prism design sketch 1；

The refracting prisms light path design sketch of Figure 11 correlation technique product；

Figure 12 is the medium air pile structure schematic diagram of this technical products；

Figure 13 is that the folding of this technical products spreads out optical path prism design sketch 2；

Figure 14 is the medium air heap light path design sketch of this technical products；

Figure 15 is the membrane array angle of incidence transmittance graph of this technical products；

Figure 16 is the fiber waveguide illumination pattern of this technical products；

Figure 17 is the fiber waveguide distortion figure of this technical products；

Figure 18 is the fiber waveguide energy curve of this technical products；

Figure 19 is the fiber waveguide MTF curve of this technical products；

Figure 20 is the fiber waveguide point range figure of this technical products.

Labelling in accompanying drawing:

Detailed description of the invention

Below in conjunction with the accompanying drawings the preferred embodiments of the present invention are described in detail, so that advantages and features of the invention energy It is easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention is made apparent clear and definite defining.

Refer to accompanying drawing 1-14, a kind of display of wearing alternately shown for augmented reality that this technology is realized in sets Standby include: image collecting device, microprocessor, illuminator, graphics device, expand device, light splitting device, binocular Waveguide display device；

Image collecting device includes left eye photographic head, right eye photographic head；

Binocular waveguide display device includes left vision light guiding surface；Right vision light guiding surface；Left eye membrane array；Right eye is thin Membrane array；Binocular waveguide；Left eye extinction sheet；Right eye extinction sheet；

Preferably, it is provided with attachment structure for installing image display device outside described binocular waveguide display device；Institute State image collecting device and be connected to microprocessor by video line；Described microprocessor connects graphics device；Described figure The image exiting surface front of shape display device is provided with light splitting device；The light of described illuminator injects polarization spectro dress Putting, described light splitting device one end is provided with and expands device；It is provided with binocular waveguide before the described exiting surface expanding device to show Showing device, and will correct after optical image through left vision light guiding surface；Right vision light guiding surface, respectively to binocular waveguide display dress Put two ends to transmit；Described illuminator realizes the s polarized light that outgoing polarizes entirely；Described graphics device is LCOS display screen, LCOS display screen display is divided into homalographic two parts to show through microprocessor as shown in Figure 7, and display content is completely the same；Micro-place Reception is processed left eye right eye photographic head visual signal and drives LCOS display screen (3-1) by reason device, carries microprocessor and controls Present the display content of left eye and right eye part on LCOS display screen (3-1), process right and left eyes camera video stream information, and lead to Crossing human eye principle of stereoscopic vision and obtain the depth information in spatial dimension pointed by photographic head, microprocessor controls LCOS display screen (3-1) show, by the ray machine of penetration, be superimposed upon on real-world object, virtual shown by LCOS display screen (3-1) The positional information of object, the depth information obtained by left and right photographic head and two-dimensional color information, obtained through microprocessor processes again Arrive.

Preferably, described binocular waveguide display device Yanzhong axisymmetrical is provided with images of left and right eyes transmission and display structure；Its Left eye transmission and display Structural assignments are left vision light guiding surface, binocular waveguide, left eye membrane array, binocular waveguide, left eye suction Mating plate；Its right eye transmission and display Structural assignments be right vision light guiding surface, binocular waveguide, right eye membrane array, binocular waveguide, Right eye extinction sheet；Described binocular waveguide display device two bottom is respectively arranged with left eye extinction sheet, right eye extinction sheet.

Preferably, described left vision light guiding surface is reflecting mirror based on total reflection principle or based on holographic optics complete Breath optical element realizes；Described left vision light guiding surface is arranged in binocular waveguide display device, left vision light guiding surface and warp The shadow image direction of propagation expanded in device is provided with certain angle, the propagation path phase of the size of its angle and shadow image Association；Described right vision light guiding surface is consistent with left vision light guiding surface material；Described right vision light guiding surface regards with left eye Feel that light guiding surface prolongs binocular waveguide display device setting substantially symmetrical about its central axis.

Preferably, the thin film of the stacking that described left eye membrane array is formed by stacking by two or more film parallel Group；Described thin film is multilayer nanoscale film system processing and fabricating, and its technique is that a thin film is adding man-hour to every thin film Thickness and refractive index are measured in real time, and error produced by previously deposited thin film being controlled by film thickness monitoring system will The thickness of thin film to be deposited is modified, by physical deposition, chemical deposition process by film preparation thin film；Described left eye Membrane array is plated on tilted-putted transparent dielectric substrate according to certain angle, to ensure to be formed continuously in the design angle of visual field Optical image imaging region without ghost image free of discontinuities；Described left eye membrane array is consistent with the material of right eye membrane array；Described Left eye membrane array and right eye membrane array prolong binocular waveguide display device setting substantially symmetrical about its central axis.

As Figure 2-3, binocular waveguide display device includes: left vision light guiding surface (1-1)；Right vision light guiding surface (1-2)；Left eye membrane array (1-3)；Right eye membrane array (1-4)；Binocular waveguide (1-5)；Left eye extinction sheet (1-8)；Right eye Extinction sheet (1-9)；

Attachment structure it is provided with for installing image display device outside binocular waveguide display device；

Binocular waveguide display device Yanzhong axisymmetrical is provided with images of left and right eyes transmission and display structure as shown in Figure 1-2；Its Left eye transmission and display Structural assignments be left vision light guiding surface (1-1), binocular waveguide (1-5), left eye membrane array (1-3), Binocular waveguide (1-5), left eye extinction sheet (1-8)；Its right eye transmission and display Structural assignments be left vision light guiding surface (1-2), Binocular waveguide (1-5), right eye membrane array (1-4), binocular waveguide (1-5), right eye extinction sheet (1-9)；

Binocular waveguide display device two bottom is respectively arranged with extinction sheet, and its function is to absorb unnecessary veiling glare, suppression Veiling glare reflection thus reduce the veiling glare image contributions on affecting in viewing area.

Left vision light guiding surface (1-1) is reflecting mirror based on total reflection principle or holographic optics based on holographic optics Element HOE realizes；Left vision light guiding surface (1-1) is arranged in binocular waveguide display device, left vision light guiding surface (1-1) with The shadow image direction of propagation in expanding device is provided with certain angle, the size of its angle and the propagation path of shadow image It is associated.

Right vision light guiding surface (1-2) is consistent with left vision light guiding surface (1-1) material；

It is substantially symmetrical about its central axis that right vision light guiding surface (1-2) and left vision light guiding surface (1-1) prolong binocular waveguide display device Arrange；

The thin film group of the stacking that left eye membrane array is formed by stacking by two or more film parallel；Described thin film For multilayer nanoscale film system processing and fabricating, its technique is that thickness and the refractive index of every thin film are entered by a thin film in processing Row is measured in real time, the thin film being controlled error produced by previously deposited thin film by film thickness monitoring system i.e. will to deposit Thickness is modified.；

Left eye membrane array is plated on the interface of inclination, and forms optical image imaging region in slant setting region.

Left eye membrane array is consistent with the material of right eye membrane array；

Left eye membrane array and right eye membrane array prolong binocular waveguide display device setting substantially symmetrical about its central axis；

This technology employing membrane array carries out reflecting output to image can make binocular waveguide display device structure to do Become binocular superthin structure；Membrane array can realize the effect reducing duct thickness with expanding the angle of visual field (FOV)；Prior art is very Many is the most all to use prism structure to carry out the output of image as carrier, and the thickness of prism structure is typically at about 10-12mm, and thin Membrane array can accomplish that thickness is 2mm-4mm, and the thickness that therefore can be substantially reduced product waveguiding structure expands the angle of visual field simultaneously.

The angle of incidence that left eye membrane array slant setting is formed has two kinds of situations, and the first experiences at waveguide upper and lower interface Arriving left eye membrane array after odd-times total reflection, a part of transmission, a part is reflected into human eye, and its angle of incidence is β₃；The Two kinds of whole transmissions at interface, its angle of incidence is β₄, angular relationship is

β₃=β₁

β₄=3 β₁

In viewing area, eye pupil size is d_e, exit pupil position is D, fiber waveguide thickness T, and the angle of visual field of described structure is

$FOV=2\mathrm{\θ}=2\arctan \frac{\frac{3}{2}{\mathrm{Tcot\β}}_1-\frac{1}{2}{d}_e}{D}$

Fiber waveguide thickness with the relation of the angle of visual field is

T=(DtanFOV+d_e)tanβ₁

Image transmission can be n according to waveguide substrate refractive index₁, air refraction is n₀, it is totally reflected at the bottom of waveguide-based Condition be

$\mathrm{\β}=\arcsin \frac{n_0}{n_1}$

β₂=2 β₁

β₂＞ β

Through left the optical image that sends of right vision light guiding surface again through being arranged on binocular waveguide (1-5) transmit respectively into Enter after reflecting to left eye membrane array (1-3) and right eye membrane array (1-4), image is exported, and is seen by human eye Examine image display effect.

Preferably, described in expand device and be made up of the first battery of lens and the second battery of lens, the first battery of lens and the second lens Group is processed by simple lens or balsaming lens group.The design expanding device can be carried out according to the size of the screen of image display device Flexible design, expand device more can also carry out flexible design in duct thickness and light guiding surface inclination angle simultaneously, saturating by first The structure of mirror group and the second battery of lens is adjusted.

The front end of the optical image exit direction expanding device (2-1) is provided with binocular waveguide display device, and by after rectification Optical image through left vision light guiding surface (1-1)；Right vision light guiding surface (1-2), respectively to binocular waveguide display device two ends Transmit；

Described amplification M of device that expands is by images of left and right eyes vision light guiding surface size L_REPLECTEffective with LCOS display screen Size L_lcosDetermine,

$M-\frac{L_{lcos}}{L_{REFLECT}}$

Preferably, it is provided with Polarization-Sensitive film system in described light splitting device structure；Polarize through illuminator incidence s Optical projection is to graphics device, then outgoing p-polarization light after graphics device reflects, and transmission-polarizing light-dividing device enters and expands Bundle device.

Light splitting device is one or more prism group structure composition；Its function is: incident through illuminator (3-3) S polarized light projects to LCOS display screen (3-1), then outgoing p-polarization light after LCOS display screen (3-1) reflects, and transmission-polarizing divides Electro-optical device (3-2) enters and expands device (2-1).Its function is to carry out without abnormal by the light beam of light splitting device (PBS) outgoing Become expands；

Preferably, described illuminator includes light source, the first reflection unit, the second reflection unit, full polarization device；Described One reflection unit is arranged on the positive front end of light source exiting surface；Described second reflection unit is arranged on the rear end of light source exiting surface；The The free form surface structure of opening centered by two reflection units；Aperture position is consistent with the exiting surface of light source；Described light source sends Light is being reflected into full polarization device through the second reflection unit after the first reflection unit is by light line reflection by light, and its purpose exists In the light collimation that light source is launched and inject the full polarization device of entrance uniformly, reduce due to light intensity and light weak produced by hot spot or Halation.

First reflection unit, the second reflection unit and the distance of light source and Random Curved Surface Designing refer to prior art: CN103912809B。

Preferably, it is provided with spread out prism, medium air sheet heap, the second folding of the first folding in described full polarization device to spread out prism；Institute State the first folding prism that spreads out to be made up of refracting prisms and the diffraction surfaces that is arranged on refracting prisms；Described second folding spreads out prism by reflecting Prism and the diffraction surfaces composition being arranged on refracting prisms；Described medium air sheet pile structure is by multi-layer transparent material with empty The alternating structure superposition composition of gas-bearing formation；Its alternating structure is consistent with the area coverage of light.

It is provided with spread out prism, medium air sheet heap, the second folding of the first folding in full polarization device to spread out prism；

The first folding prism that spreads out is made up of refracting prisms and the diffraction surfaces that is arranged on refracting prisms；

The second folding prism that spreads out is made up of refracting prisms and the diffraction surfaces that is arranged on refracting prisms；

Medium air sheet pile structure is to be superposed with the alternating structure of air layer by multi-layer transparent material to form；It is alternately tied Structure is thought consistent with the area coverage of light；

Described diffraction surfaces uses the method for Ultra-precision Turning to produce diffraction micro structural, utilizes the negative dispersion of diffraction element The dispersion of matter and refracting prisms is offset, and then realizes achromatism.Utilize negative dispersion character and the refracting prisms of diffraction element Dispersion properties offset, thus realize achromatism.Compared to tradition refracting prisms structure, this folding spreads out mixing prism structure There is in terms of correcting chromatic aberration the advantage of uniqueness, reduce lens usage quantity, reduce and alleviate system weight, reduce system cost. The processing method using ultraprecise diffraction surfaces so that diffraction surfaces has specific PHASE DISTRIBUTION function.Distribution function is

Z (x, y)=C₀₀+C₀₁y+C₁₀x+C₁₁xy+C₂₀x²+…+C_i,k-ixⁱy^k-i+…(1)

The spread out micro structure of diffraction surfaces of prism of folding is not fixed, according to the optimum results that formed of diffraction surfaces be different, Than if any microstructure design low cost some, but compensate dispersion limited in one's ability, easy to process；Some diffraction surfaces micro structure meetings The most complicated, compensate dispersive power fine, its processing technique and material select upper selectivity very wide, and implementation result can be wanted according to technology Ask and be further optimized.

The mathematical theory of diffraction surfaces is as follows:

Wavelength is λ_middleThe light grating with angle θ to d as cycle on, m order diffraction angle is θ_dmiddle, that θ_dmiddleWith the relation of θ it is

d(sinθ_dmiddle-sin θ)=m λ_middle (2)

θ can be obtained_dExpression formula

${\mathrm{sin\θ}}_{dmiddle}=sin\mathrm{\θ}+\frac{{\mathrm{m\λ}}_{middle}}{d}---\left(3\right)$

So λ_middleThe refractive index of the light m order diffraction light of wavelength is

$n\left({\mathrm{\λ}}_{middle}\right)=\frac{{\mathrm{sin\θ}}_{dmiddle}}{\sin \mathrm{\θ}}=1+\frac{{\mathrm{m\λ}}_{middle}}{dsin\mathrm{\θ}}---\left(4\right)$

In like manner, wavelength be the light of λ with identical incident angles to changing on grating, the refractive index that this order diffraction light is corresponding is

$n\left(\mathrm{\λ}\right)=\frac{{\mathrm{sin\θ}}_d}{sin\mathrm{\θ}}=1+\frac{m\mathrm{\λ}}{d\sin \mathrm{\θ}}---\left(5\right)$

Can be obtained by (4), (5)

$n\left(\mathrm{\λ}\right)=\frac{\mathrm{\λ}}{{\mathrm{\λ}}_{middle}}\[n\left({\mathrm{\λ}}_{middle}\right)-1\]+1---\left(6\right)$

Being known for diffraction optical element by (6), its refractive index increases along with wavelength and increases, and Abbe number is

$v_{dif}=\frac{n_{middle}-1}{n_{short}-n_{long}}=\frac{{\mathrm{\λ}}_{middle}}{{\mathrm{\λ}}_{short}-{\mathrm{\λ}}_{long}}---\left(7\right)$

From (7), the Abbe number of diffraction optical element is negative value, refraction optical element be on the occasion of.For correction of refractive The aberration of prism, needs to meet achromatism formula

$H_{ref}=H_{total}\frac{v_{ref}}{v_{ref}-v_{dif}}$

$H_{dif}=H_{total}\frac{v_{dif}}{v_{dif}-v_{ref}}---\left(8\right)$

The diffraction surfaces face type meeting achromatism formula is the face type of needs herein.

The characteristic of described diffraction prism is to compensate refracting prisms chromatic dispersion problem, and diffraction optics original paper (DOE) Abbe number is negative Value, can eliminate the aberration problem of refracting prisms.If not using diffraction optical element, it may appear that serious chromatic dispersion problem, use Diffraction optical element, then can make up aberration problem, and ensure the natural light of incident white, and outgoing is still that the natural light of white.

Natural light glancing incidence the first folding of white spreads out prism, and diffraction surfaces is used for achromatism, and refracting prisms are for light Deviation, refractive index corresponding to the angle of refracting prisms deviation and refracting prisms corner angle, achromatism centre wavelength is relevant, mathematics Expression formula is

Solve the process of deflection angle, it is simply that solve the process of above-mentioned trigonometric function nonlinear equation.

Only when the angle inciding medium air sheet heap is equal to Brewster's angle, reaching foot reflex light is s polarized light Result, therefore

$tan\mathrm{\γ}=\frac{1}{n}---\left(10\right)$

N is the refractive index of glassy layer.Angle of incidence when γ is to incide glass interface.

The foregoing is only the preferred embodiment of the present invention, not thereby limit the scope of the claims of the present invention, every profit The equivalent structure made by description of the invention and accompanying drawing content or equivalence flow process conversion, or directly or indirectly it is used in other phase The technical field closed, is the most in like manner included in the scope of patent protection of the present invention.

Claims (7)

1. the display device of wearing alternately shown for augmented reality includes: image collecting device, microprocessor, illumination dress Put, graphics device, expand device, light splitting device, binocular waveguide display device；

Image collecting device includes left eye photographic head, right eye photographic head；

Binocular waveguide display device includes left vision light guiding surface；Right vision light guiding surface；Left eye membrane array；Right eye thin film battle array Row；Binocular waveguide；Left eye extinction sheet；Right eye extinction sheet；

It is characterized in that: outside described binocular waveguide display device, be provided with attachment structure for installing image display device；Institute State image collecting device and be connected to microprocessor by video line；Described microprocessor connects graphics device；Described figure The image exiting surface front of shape display device is provided with light splitting device；The light of described illuminator injects polarization spectro dress Putting, described light splitting device one end is provided with and expands device；It is provided with binocular waveguide before the described exiting surface expanding device to show Showing device, and will correct after optical image through left vision light guiding surface；Right vision light guiding surface, respectively to binocular waveguide display dress Put two ends to transmit；Described illuminator realizes the s polarized light that outgoing polarizes entirely；Described graphics device is LCOS display screen, LCOS display screen display is divided into homalographic two parts to show through microprocessor, and display content is completely the same；Described binocular waveguide Display device Yanzhong axisymmetrical is provided with images of left and right eyes transmission and display structure；Its left eye transmission and display Structural assignments are left Eye vision light guiding surface, binocular waveguide, left eye membrane array, binocular waveguide, left eye extinction sheet；Its right eye transmission and display structure row Cloth is right vision light guiding surface, binocular waveguide, right eye membrane array, binocular waveguide, right eye extinction sheet；Described binocular waveguide shows Device two bottom is respectively arranged with left eye extinction sheet, right eye extinction sheet.

The most according to claim 1 wear display device alternately for what augmented reality showed, it is characterised in that: a described left side Eye vision light guiding surface is reflecting mirror based on total reflection principle or holographic optical elements (HOE) based on holographic optics realization；A described left side Eye vision light guiding surface is arranged in binocular waveguide display device, and left vision light guiding surface passes with the shadow image in expanding device Broadcasting direction and be provided with certain angle, the size of its angle is associated with the propagation path of shadow image；Described right vision is guide-lighting Face is consistent with left vision light guiding surface material；Described right vision light guiding surface and left vision light guiding surface prolong binocular waveguide and show Device setting substantially symmetrical about its central axis.

The most according to claim 1 and 2 wear display device alternately for what augmented reality showed, it is characterised in that: institute State the thin film group of the stacking that left eye membrane array is formed by stacking by two or more film parallel；Described thin film is multilamellar Nanoscale film system processing and fabricating, its technique is that a thin film carries out reality to thickness and the refractive index of every thin film adding man-hour Time measure, error produced by previously deposited thin film is controlled by film thickness monitoring system the thickness of the thin film that i.e. will deposit It is modified, by physical deposition, chemical deposition process by film preparation thin film；Described left eye membrane array is according to certain angle Degree is plated on tilted-putted transparent dielectric substrate, to ensure to form the continuous shadow without ghost image free of discontinuities in the design angle of visual field As imaging region；Described left eye membrane array is consistent with the material of right eye membrane array；Described left eye membrane array and right eye Membrane array prolongs binocular waveguide display device setting substantially symmetrical about its central axis.

The most according to claim 1 wear display device alternately for what augmented reality showed, it is characterised in that: described expansion Bundle device is made up of the first battery of lens and the second battery of lens, and the first battery of lens and the second battery of lens are by simple lens or balsaming lens Group processing.

The most according to claim 1 wear display device alternately for what augmented reality showed, it is characterised in that: described partially Polarization-Sensitive film system it is provided with in light-dividing device structure of shaking；Graphics device is projected to through illuminator incidence s polarized light, Outgoing p-polarization light after graphics device reflects again, transmission-polarizing light-dividing device enters and expands device.

The most according to claim 1 wear display device alternately for what augmented reality showed, it is characterised in that: described photograph Bright device includes light source, the first reflection unit, the second reflection unit, full polarization device；Described first reflection unit is arranged on light source The positive front end of exiting surface；Described second reflection unit is arranged on the rear end of light source exiting surface；Opening centered by second reflection unit Free form surface structure；Aperture position is consistent with the exiting surface of light source；The light that described light source sends will through the first reflection unit Through the second reflection unit, light is reflected into full polarization device after light line reflection, its object is to the light collimation launched by light source And inject the full polarization device of entrance uniformly, reduce due to the weak produced hot spot of light intensity and light or halation.

The most according to claim 6 wear display device and display system alternately for what augmented reality showed, its feature It is: be provided with spread out prism, medium air sheet heap, the second folding of the first folding in described full polarization device and spread out prism；Described first folding spreads out Prism is made up of refracting prisms and the diffraction surfaces that is arranged on refracting prisms；Described second folding spreads out prism by refracting prisms and setting Diffraction surfaces composition on refracting prisms；Described medium air sheet pile structure be by multi-layer transparent material and air layer alternately Folded structures forms；Its alternating structure is consistent with the area coverage of light.