CN110161685A - AR display device and wearable AR equipment - Google Patents
AR display device and wearable AR equipment Download PDFInfo
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- CN110161685A CN110161685A CN201810146905.8A CN201810146905A CN110161685A CN 110161685 A CN110161685 A CN 110161685A CN 201810146905 A CN201810146905 A CN 201810146905A CN 110161685 A CN110161685 A CN 110161685A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B2027/0178—Eyeglass type
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Abstract
The present invention provides a kind of AR display devices and wearable AR equipment, belong to augmented reality technical field of imaging.AR display device of the invention is using polarization optical path component, and polarization optical path component includes that the polarization spectroscope being arranged successively in the horizontal direction, wave plate component and curved surface reduce by half reflecting mirror, and image projection apparatus is located at the top of polarization spectroscope.The image light being emitted from image projection apparatus projects on the polarization spectroscope of polarization optical path component, polarization optical path component can make the light of polarization state second direction that can also be received by human eye, allow users to see the virtual image of big visible angle, the efficiency of light energy utilization is improved, image light brightness is improved.In the case where same image light brightness demand, which can reduce equipment heating amount with energy saving.
Description
Technical field
The present invention relates to augmented reality technical field of imaging, in particular to a kind of AR display device and wearable AR
Equipment.
Background technique
AR (Augmented Reality, augmented reality) is also referred to as mixed reality, principle be by computer technology,
By virtual Information application to real world, true environment and virtual object be added in real time the same picture or
Space exists simultaneously.
Currently, people can be interacted by wearable device, such as AR glasses or the AR helmet with real world.Such as
Fig. 1 shows the structural schematic diagram of the AR display device in existing AR glasses or the AR helmet, as shown in Figure 1, existing AR is aobvious
Showing device optical system includes image source 11, spectroscope 3, curved surface half-reflecting mirror 4 and the lens 12 above spectroscope 3, image source
11 are arranged in the top of optical system, and have certain distance between image source 11 and lens 12, and the image light of image source 11 is from upper
Lens 12 are injected under direction.At the same time, ambient light is injected from the right side of curved surface half-reflecting mirror 4 (human eye direction) to the left,
Interference light is also injected from spectroscopical lower section upwards simultaneously.The some light of image light passes through the reflection directive of spectroscope 3
Curved surface half-reflecting mirror 4, some light using curved surface half-reflecting mirror 4 reflection directive spectroscope 3.At the same time, ambient light
Some light sequentially pass through curved surface half-reflecting mirror 4 and spectroscope 3 and arrive at human eye；The some light of interference light is by light splitting
Human eye is arrived in the reflection of mirror 3.Parts of images light, component environment light and part interference light finally arrive at human eye simultaneously, make
User it can be seen that extraneous true environment while can also be seen that the image of the image source being superimposed upon in true environment 11.
Existing AR display device has the following deficiencies: that the theoretical energy efficiency of image light only has about 12.5%, image
The brightness critical constraints of light.
Summary of the invention
For above-mentioned problems of the prior art, the present invention provides a kind of AR display devices and wearable AR to set
It is standby, it using polarization optical path component, can be improved the efficiency of light energy utilization, improve image light brightness and image quality.
In a first aspect, the embodiment of the invention provides a kind of AR display device, including image projection apparatus and polarization optical path
Component；
Described image grenade instrumentation includes image source；
The polarization optical path component includes that the polarization spectroscope being arranged successively, wave plate component and curved surface reduce by half reflecting mirror.
With reference to first aspect, the embodiment of the invention provides the first possible embodiments of first aspect, wherein
Described image grenade instrumentation further includes matching mirror and/or lens.
The possible embodiment of with reference to first aspect the first, the embodiment of the invention provides the second of first aspect
The possible embodiment of kind, wherein when described image grenade instrumentation includes image source, matching mirror and lens, the matching mirror
It is fitted closely between side and the image source；The other side is fitted closely with the lens.
The possible embodiment of with reference to first aspect the first, the embodiment of the invention provides the thirds of first aspect
The possible embodiment of kind, wherein when described image grenade instrumentation includes image source and lens, the image source and the lens
Between fit closely.
Any one into the 4th kind of possible embodiment of first aspect with reference to first aspect, the present invention are implemented
Example provides the 4th kind of possible embodiment of first aspect, wherein the polarization spectroscope includes light polarizing film and polarization point
Light film；
The light polarizing film is used for the polarised light by polarization state for first direction, and absorbing polarization state is the inclined of second direction
Shake light；
The polarization beam splitter is used for the polarised light by polarization state for first direction, and reflected polarization state is second direction
Polarised light；
The first direction and the second direction are mutually perpendicular to.
The 4th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the 5th of first aspect the
The possible embodiment of kind, wherein the polarization beam splitter, which is located at, closes on the one of described image grenade instrumentation and wave plate component
Side, the light polarizing film are located remotely from the side of described image grenade instrumentation and wave plate component.
The 4th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the 6th of first aspect the
The possible embodiment of kind, wherein the polarization spectroscope further includes spectroscope substrate；The spectroscope substrate is located at described
On the outside of light polarizing film, among the light polarizing film and the polarization beam splitter or on the outside of the polarization beam splitter.
The 5th kind with reference to first aspect or the 6th kind of possible embodiment, the embodiment of the invention provides first party
The 7th kind of possible embodiment in face, wherein the plane of reflection of the polarization spectroscope and the curved surface reduce by half reflecting mirror
Angle between optical axis is α；Angle between the normal of the image source and the plane of reflection of the polarization spectroscope is β；α's
Value range is and 90 ° >=α >=0 ° between β -10 ° to+10 ° of β.
The 7th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the 8th of first aspect the
The possible embodiment of kind, wherein β is 0 °~90 °.
The 7th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the 9th of first aspect the
The possible embodiment of kind, wherein β is 40 °~50 °.
The 8th kind with reference to first aspect or the 9th kind of possible embodiment, the embodiment of the invention provides first party
The tenth kind of possible embodiment in face, wherein when the polarised light of the first direction and the polarised light of the second direction exist
When meeting under the premise of being mutually perpendicular to around 0 °~360 ° rotations in direction that light is propagated, polarization beam splitter and wave plate component are also wanted
Change corresponding angle.
The 9th kind with reference to first aspect or the tenth kind of possible embodiment, the embodiment of the invention provides first party
A kind of possible embodiment of the tenth of face, wherein the wave plate component is quarter wave plate.
A kind of possible embodiment of the tenth with reference to first aspect, the embodiment of the invention provides the of first aspect
12 kinds of possible embodiments, wherein the quarter wave plate is set to the polarization spectroscope and the curved surface reflects by half
Between mirror.
A kind of possible embodiment of the tenth with reference to first aspect, the embodiment of the invention provides the of first aspect
13 kinds of possible embodiments, wherein the quarter wave plate fits in the curved surface and reduces by half the inside of reflecting mirror.
The 12nd kind with reference to first aspect or the 13rd kind of possible embodiment, the embodiment of the invention provides
14th kind of possible embodiment of one side, wherein the curved surface reflecting mirror that reduces by half includes curved mirror substrate and semi-transparent half
Anti- film, the semi-transparent semi-reflecting film are located remotely from the side of the wave plate component.
The 14th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the of first aspect
15 kinds of possible embodiments, wherein the curved surface reflecting mirror that reduces by half further includes anti-reflection film；The anti-reflection film, which is located at, to be closed on
The side of the wave plate component.
The possible embodiment of with reference to first aspect the first, the embodiment of the invention provides the tenth of first aspect the
Six kinds of possible embodiments, wherein the refractive index of the matching mirror is 1~2.7.
The 16th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the of first aspect
17 kinds of possible embodiments, wherein the matching mirror is by liquid material, liquid crystal, semisolid material or solid material structure
At.
The 17th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the of first aspect
18 kinds of possible embodiments, wherein when the matching mirror is liquid material, liquid crystal or semisolid material, described image
Grenade instrumentation further includes sealing structure, and matching mirror is sealed between the image source and the lens.
The 17th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the of first aspect
19 kinds of possible embodiments, wherein when the matching mirror is solid material, the image source, matching mirror and the lens
It is connected directly to one another.
With reference to first aspect, the embodiment of the invention provides the 20th kind of possible embodiment of first aspect,
In, the image source is the image source or single image source of integrated optical source.
Second aspect, the embodiment of the invention also provides a kind of wearable devices, show including clamping piece and above-mentioned AR
Device.
Basic functional principle of the invention:
AR display device provided by the invention and wearable AR equipment, AR display device is using polarization optical path component, polarization
Optical path component includes that the polarization spectroscope being arranged successively in the horizontal direction, wave plate component and curved surface reduce by half reflecting mirror, and image is thrown
Injection device is located at the top of polarization spectroscope.The image light being emitted from image projection apparatus projects on polarization spectroscope, schemes
As the polarised light of the first direction in light is projected through polarization spectroscope to the external world, the second direction in image light it is inclined
Vibration light is reflected on wave plate component；It is changed into circularly polarized light by wave plate component, is incident to curved surface and reduces by half reflecting mirror, one
Light splitter is projected to the external world, another part by curved surface reduce by half reflecting mirror reflect after using wave plate component, changed by circularly polarized light
At the polarised light of first direction, enter human eye through polarization spectroscope.Last part image light is received by human eye, is used
Family it can be seen that big visible angle virtual image.
The embodiment of the present invention bring it is following the utility model has the advantages that
AR display device provided in an embodiment of the present invention and wearable AR equipment, can promote the energy dose-effect of image light
Rate improves image light brightness.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention are in specification, claim
Specifically noted structure is achieved and obtained in book and attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and match
Appended attached drawing is closed, is described in detail below.
Detailed description of the invention
It, below will be to tool in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Body embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing be some embodiments of the present invention, for those of ordinary skill in the art, what is do not made the creative labor
Under the premise of, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of AR display device of the prior art；
Fig. 2 is the structural schematic diagram of AR display device provided by first embodiment of the invention；
Fig. 3 is the structural schematic diagram of image projection apparatus provided by first embodiment of the invention；
Fig. 4 is the structural schematic diagram of polarization spectroscope provided by the embodiment of the present invention；
Fig. 5 is that curved surface provided by the embodiment of the present invention reduces by half the structural schematic diagram of reflecting mirror；
Fig. 6 is the structural schematic diagram of AR display device provided by second embodiment of the invention.
Icon:
1- image projection apparatus；11- image source；12- lens；13- matches mirror；3- spectroscope；4- curved surface half-reflecting mirror；5-
Polarization spectroscope；51- spectroscope substrate；52- light polarizing film；53- polarization beam splitter；6- wave plate component；7- curved surface reflects by half
Mirror；71- anti-reflection film；72- curved mirror substrate；73- semi-transparent semi-reflecting film.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.The component of embodiments of the present invention, which are generally described and illustrated herein in the accompanying drawings can be with a variety of different
Configuration is to arrange and design.Therefore, below the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit
The range of claimed invention processed, but it is merely representative of selected embodiment of the invention.Based on the implementation in the present invention
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The scope of protection of the invention.
For existing AR display device the efficiency of light energy utilization it is lower the problems such as, the embodiment of the invention provides a kind of AR
Display device and wearable AR equipment, below first describe to AR display device of the invention in detail.
Embodiment one
A kind of AR display device is present embodiments provided, as shown in Fig. 2, the AR display device, including image projection apparatus
1 and polarization optical path component.
Image projection apparatus 1 includes image source 11, matching mirror 13 and lens 12.It should be noted that image projection apparatus
It can only include image source and matching mirror.Wherein, the effect of image source 11 is to show the image for needing to project in human eye, image source 11
Plane image source, the including but not limited to image source of integrated optical source or single image source can be used.For example, OLED (Organic
Light-Emitting Diode, Organic Light Emitting Diode), LCOS (Liquid Crystal On Silicon, silicon substrate liquid
It is brilliant), LCD (Liquid Crystal Display, liquid crystal display), MEMS (Microelectromechanical
Systems, micro electronmechanical display system), the display such as DMD (Digital Micro-mirror Device, digital micromirror elements)
The electronic device of principle.Wherein, OLED and LCD is the image source of integrated optical source；LCOS, MEMS and DMD are single image source, are needed
In addition increase secondary light source.
Mirror 13 is matched positioned at image source 11 and lens 12 between, the side of matching mirror 13 is bonded with image source 11, the other side with it is saturating
Mirror 12 is bonded.Matching mirror 13 has high transparency and certain refractive index, and the refractive index of matching mirror 13 is greater than the refraction of air
Rate.Matching mirror 13 can be made of transparent liquid material, such as water, alcohol etc.；It can also be by transparent solid material system
At, such as glass, resin etc.；It can also be made of liquid crystal or semisolid material.
When the material for matching mirror 13 is liquid, semisolid or liquid crystal, it is provided between lens 12 and image source 11 external close
Seal structure prevents matching mirror material to be lost for example, closed frame, makes to form closed cavity between lens 12 and image source 11.
When the material for matching mirror 13 is solid, matching mirror 13 can be directly connected between image source 11 and lens 12, without frame.I.e.
Image source 11 and matching mirror 13 are directly connected to or are bonded by glue, match mirror 13 and lens 12 are directly connected to or are glued by glue
It connects.
Lens 12 can be the lens group an of lens or multiple lens composition.Every face lens can in lens or lens group
To be convex lens, concavees lens or convex lens and concavees lens any combination etc., the face type of lens can be spherical surface, aspherical, free
Light refraction, matching polarized light road component are completed to be imaged by curved surface etc., lens 12 jointly.
As shown in Figure 1, due between the image source and lens of existing AR display device have gap and gap it is excessive, one
The size that aspect will cause AR display device is bigger than normal, and the distribution of element relatively disperses, and causes optical system structure size bigger than normal, fills
It adjusts difficult and is easily damaged.On the other hand, since image source is in air, refractive index is low, and the more difficult raising of numerical aperture is
Limiting resolution of uniting is limited, and design difficulty is high.And since the refringence of air and lens interface is away from larger, so that should
The reflectivity in face is higher, is easy to cause the stray lights such as ghost image to follow-up system.Ghost image refers to due to reflextion from lens surface and in light
The additional image that system focal plane nearby generates, the additional image brightness is generally darker, and is staggered with preimage.
Compared with the above-mentioned prior art, as shown in figure 3, the image light that the image source of the present embodiment issues is first into
Match mirror, due to matching mirror material have high transparency and certain refractive index, compared with air dielectric, reduce light into
The refringence of interface when entering lens, improves lens upper surface transmitance, increases light efficiency, at the same inhibit stray light and
The generation of ghost image.It further says, the refractive index of air is 1, and the refractive index of matching mirror material can be between 1~2.7, root
According to R=(0.61* λ)/(n*sin θ) calculation formula (R is diffraction spot radius, and λ is optical wavelength, and n is image planes refractive index, θ be into
Penetrate angular aperture), the refractive index for improving medium is capable of providing smaller diffraction pattern, improves imaging resolution.By improving image space
Refractive index realizes biggish numerical aperture with relatively small angular aperture, reduces the deflection angle of rim ray, reduce and set
Count difficulty.
Polarization optical path component includes polarization spectroscope 5, wave plate component 6 and the curved surface folding being arranged successively in the horizontal direction
Half-reflecting mirror 7.Polarization spectroscope 5 is located at the below or above of image projection apparatus 1.
As shown in figure 4, polarization spectroscope 5 includes spectroscope substrate 51, light polarizing film 52 and polarization beam splitter 53.Light polarizing film
52 for the polarised light by polarization state for first direction, absorbs the polarised light that polarization state is second direction.Polarization beam splitter 53
For being the polarised light of first direction by polarization state, reflected polarization state is the polarised light of second direction.Polarization spectroscope 5 inclines
Tiltedly setting, polarization beam splitter 53 are located at the side for closing on image projection apparatus 1 and wave plate component 6, and light polarizing film 52 is located remotely from figure
As the side of grenade instrumentation 1 and wave plate component 6.
Wherein, first direction and second direction are mutually perpendicular to.For example, it is the side P that first direction polarised light, which can be polarization state,
To polarised light, second direction polarised light can be polarization state be the direction S polarised light.In view of P-polarized light and S polarized light
It can be rotated under the premise of satisfaction is mutually perpendicular to around the light direction of propagation, therefore, first direction polarised light is also possible to polarize
State and the polarised light of the direction P at an angle, second direction polarised light are also possible to polarization state and the direction S at an angle
Polarised light, in the embodiment of the present invention, without limiting.
Wherein, light polarizing film, spectroscope substrate and polarization beam splitter through-thickness put in order, and can be such as Fig. 4 institute
Show, be followed successively by spectroscope substrate, light polarizing film and polarization beam splitter, i.e. spectroscope substrate is located on the outside of light polarizing film；Or
Light polarizing film, spectroscope substrate and polarization beam splitter, i.e. spectroscope substrate are located among light polarizing film and polarization beam splitter；Or it is
Light polarizing film, polarization beam splitter and spectroscope substrate, i.e. spectroscope substrate are located on the outside of polarization beam splitter.
Optionally, polarization spectroscope 5 can not also include spectroscope substrate, only include light polarizing film and polarization beam splitter.Partially
Vibration spectro-film is located at the side for closing on image projection apparatus and wave plate component, and light polarizing film is located remotely from image projection apparatus and wave
The side of piece component.
Since existing AR display device uses common spectroscope, causes interference with light and largely enter human eye, and is external
The contrast of the interference light severe jamming image of injection seriously affects the contrast of image so that picture material is chaotic.
In the present embodiment, when extraneous interference light is incident in polarization spectroscope 5, interference light can be first passed through
The polarised light of light polarizing film 52, second direction therein is absorbed, and the polarised light of remaining first direction can pass through light polarizing film and polarization
Spectro-film, substantially noiseless light are reflected into human eye, can promote image-watching contrast, reduce interference.
As shown in Fig. 2, the plane of reflection of polarization spectroscope 5 and curved surface reduce by half, the optical axis of reflecting mirror 7 is in the angle α, the method for image source
The plane of reflection of line and polarization spectroscope 5 is in the angle β, and the value range of α is between β -10 ° to+10 ° of β, and 90 ° >=α >=0 °.β
Between 0 ° -90 °, preferably 40 ° -50 °, at this point, the visual field of image light is maximum, the visual range of image light is maximum.
Wave plate component 6 can use quarter wave plate.Quarter wave plate is used to the second incident polarised light being changed into circular polarization
Light.Quarter wave plate can be planar structure or curved-surface structure；Quarter wave plate can also be cylindrical structure；Quarter wave plate can also be spherical surface or non-
Spherical structure.Quarter wave plate can be set to reduce by half between reflecting mirror 7 in polarization spectroscope 5 and curved surface, as shown in Figure 2.Quarter wave plate
Curved surface can also be fitted in reduce by half the inside of reflecting mirror 7, that is, close on the side of polarization spectroscope 5.
As shown in figure 5, curved surface reduces by half, reflecting mirror 7 includes anti-reflection film 71, curved mirror substrate 72 and semi-transparent semi-reflecting film 73.
Optionally, curved surface reduce by half reflecting mirror 7 may include only include curved mirror substrate and semi-transparent semi-reflecting film.It is semi-transparent semi-reflecting
Film is located remotely from the side of wave plate component 6.A part of incident ray can be reflected back wave plate component 6 by semi-transparent semi-reflecting film.
If curved surface reduces by half, reflecting mirror 7 includes anti-reflection film 71, curved mirror substrate 72 and semi-transparent semi-reflecting film 73, anti-reflection film 71
Positioned at the side for closing on wave plate component 6, semi-transparent semi-reflecting film 73 is located remotely from the side of wave plate component 6.That is anti-reflection film, curved mirror
Substrate and semi-transparent semi-reflecting film through-thickness put in order, can be it is as shown in Figure 5, be followed successively by from inside to outside anti-reflection film,
Curved mirror substrate and semi-transparent semi-reflecting film.Herein, to close on the side of wave plate component 6 as inside, the side far from wave plate component 6
For outside.Since the curved surface reflecting mirror that reduces by half includes making original positioned at the anti-reflection film of inside and positioned at the semi-transparent semi-reflecting film in outside
The curved mirror of primary event increases as refraction and primary event twice.It is increased under the premise of system bulk does not change
The quantity of plane of refraction, improves design freedom, provides the foundation to reduce aberration and improving optical performance, is reducing volume
While, keep the clarity of imaging system higher, visible angle is bigger.
The image light being emitted from lens 12 enters on polarization spectroscope 5, and image light touches polarization spectro first
Film 53, the partial polarization direction in image light is that the polarised light of second direction can be reflected onto wave plate component 6 at this time.Polarization
Direction is that the polarised light of second direction passes through wave plate component 6, is changed into circularly polarized light, is then incident on curved surface and reduces by half reflecting mirror 7
71 side of anti-reflection film, the light occur for the first time reflect；Curved surface is then incident on to reduce by half the semi-transparent semi-reflecting film 73 1 of reflecting mirror
Side, image light is divided at this time, and a part injects to the external world, and another part is reflected by semi-transparent semi-reflecting film 73.The figure reflected
As light can be again incident on the side of anti-reflection film 71, occur second and reflect, then incident quarter wave plate again, by circular polarization
Light becomes the first polarised light, i.e. the polarization state polarised light that is first direction.The first polarised light after transformation is again incident on polarization
Spectroscope 5, due to polarization direction be first direction, at this time light pass through polarization beam splitter, spectroscope substrate and light polarizing film into
Enter into human eye, enables users to the virtual image for seeing big visible angle.
First polarised light and the second polarised light can meet be mutually perpendicular under the premise of around the direction 0 that light is propagated~
360 ° of rotations, polarization beam splitter and quarter wave plate will also change corresponding angle at this time.It therefore, can be according to the in production
The angle of one direction polarised light and second direction polarised light, determines the setting angle of polarization spectroscope and wave plate component.
In view of the theoretical energy efficiency of the image light of the AR device of the prior art only has about 12.5%, image light
Brightness critical constraints；And the volume of system is limited, it is difficult to image quality and optical is promoted by increasing lens numbers
Energy.
Compared with prior art, the embodiment of the present invention use polarization optical path component can be improved the efficiency of light energy utilization 1 again with
On, the energy efficiency of image light can be promoted to about 25%, improve image light brightness, save power consumption, reduce system heat generation
Amount.
When ambient light incidence curved surface reduces by half reflecting mirror 7, a part of ambient light reduces by half reflecting mirror 7, wave through curved surface
Piece component 6 and polarization spectroscope 5 allow users to see true external environment into human eye, by virtual image and very
The Overlapping display of real environment achievees the effect that augmented reality.
In conclusion AR display device provided in this embodiment, has the advantages that
First, it is bonded between image source and lens or gapless, makes that optical system structure is more compact, volume is smaller, weight
Lighter, comfortable wearing；
Second, by improving image space refractive index, biggish numerical aperture is realized with relatively small angular aperture, is reduced
The deflection angle of rim ray, reduces design difficulty；
Third reduces the refringence of lens interface, improves the transmitance of rim ray, reduces ghost image, and enhance
Brightness；
4th, element arrangements are compact, are convenient for adjustment, and system strength is high；
5th, polarization spectroscope removes interference light, improves the contrast of image light and ambient light；
6th, the energy efficiency of image light is promoted to about 25%, and brightness is obviously improved；
7th, in the case where same image light brightness demand, which can be set with energy saving, reduction
Preparation heat；
8th, reduced by half the parameters such as the face type on reflecting mirror two sides, thickness, material by designing curved surface, is made original only primary anti-
The curved mirror penetrated increases to reflect primary event twice.The number of plane of refraction is increased under the premise of system bulk does not change
Amount, improves design freedom, provides the foundation to reduce aberration and improving optical performance, while reducing volume, makes into
As the clarity of system is higher, visible angle is bigger.
Embodiment two
A kind of AR display device is present embodiments provided, as shown in fig. 6, the AR display device, including image projection apparatus
1 and polarization optical path component.
Difference with above-described embodiment one is: the image projection apparatus 1 of the embodiment includes image source 11 and lens 12.
Image source 11 is fitted closely with lens 12.
As shown in fig. 6, the image light that image source 11 issues will be directed into since image source 11 and lens 12 fit closely
Into lens 12, reduce the refringence of interface when light enters lens, improve lens upper surface transmitance, increases
Light efficiency, can also inhibit the generation of stray light and ghost image.
AR display device provided in this embodiment, fits closely between image source and lens, steps up optical system structure more
It gathers, volume is smaller, weight is lighter, comfortable wearing.
In order to save length, the content that embodiment two is the same as example 1 may refer to above-described embodiment one, herein
It repeats no more.
Embodiment three
The embodiment of the invention also provides a kind of wearable AR equipment, including clamping piece and above-described embodiment one or implementation
AR display device documented by example two.
The wearable AR equipment can be but not limited to AR glasses, the AR helmet or AR mask.When wearable AR equipment is AR
When glasses, clamping piece is frame, and AR display device is mounted on frame, is equivalent to the position of two eyeglasses.When wearable AR is set
When for being the AR helmet, clamping piece can be headpiece case, and AR display device is installed on the face-port portion on front side of headpiece case.
The wearable AR equipment of the present embodiment is provided with above-mentioned AR display device, and AR display device is using polarization optical path
Component, polarization optical path component include that the polarization spectroscope being arranged successively, wave plate component and curved surface reduce by half reflecting mirror, image projection
Device is located at the top of polarization spectroscope.The image light being emitted from image projection apparatus projects on polarization spectroscope, image
Polarization state is that the light of first direction enters human eye through polarization spectroscope in light, and the partial polarization state in image light is the
The light in two directions is reflected on wave plate component；It is changed into circularly polarized light by wave plate component, is incident to curved surface and reflects by half
Mirror, a part of light are projected to the external world, another part by curved surface reduce by half reflecting mirror reflect after using wave plate component, it is inclined by circle
Vibration light is transformed into the light that polarization state is first direction, enters human eye through polarization spectroscope.It allows users to see big angle of visibility
The virtual image of degree, improves the efficiency of light energy utilization, improves image light brightness.In the feelings of same image light brightness demand
Under condition, which can reduce equipment heating amount with energy saving.
Meanwhile having the further advantage that by improving image space refractive index, it is realized with relatively small angular aperture biggish
Numerical aperture reduces the deflection angle of rim ray, reduces design difficulty；The refringence for reducing lens interface, mentions
The transmitance of high rim light reduces ghost image, and highlights；Element arrangements are compact, are convenient for adjustment, system strength is high, weight
It is lighter, comfortable wearing；Polarization spectroscope removes interference light, and for image without veiling glare, contrast is high；Promote the energy of image light
To about 25%, brightness is obviously improved efficiency；Reduced by half the parameters such as the face type on reflecting mirror two sides, thickness, material by designing curved surface,
Increase the curved mirror of original primary event to reflect primary event twice.Increase under the premise of system bulk does not change
The quantity for having added plane of refraction, improves design freedom, provides the foundation, is reducing to reduce aberration and improving optical performance
While volume, keep the clarity of imaging system higher, visible angle is bigger.
AR display device provided in an embodiment of the present invention and wearable AR equipment technical characteristic having the same, so
It can solve identical technical problem, reach identical technical effect.
It should be noted that in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or one
Ground connection；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, the indirect phase of intermediary can also be passed through
Even, it can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, be only for
Convenient for the description present invention and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side
Position is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " the
Two ", " third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
Finally, it should be noted that embodiment described above, only a specific embodiment of the invention, to illustrate this hair
Bright technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although right with reference to the foregoing embodiments
The present invention is described in detail, those skilled in the art should understand that: any technology for being familiar with the art
Personnel in the technical scope disclosed by the present invention, can still modify to technical solution documented by previous embodiment
Or variation or equivalent replacement of some of the technical features can be readily occurred in；And these modifications, variation or replacement,
The spirit and scope for technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution, should all cover in this hair
Within bright protection scope.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (22)
1. a kind of AR display device, which is characterized in that including image projection apparatus and polarization optical path component；
Described image grenade instrumentation includes image source；
The polarization optical path component includes that the polarization spectroscope being arranged successively, wave plate component and curved surface reduce by half reflecting mirror.
2. AR display device according to claim 1, which is characterized in that described image grenade instrumentation further includes matching mirror
And/or lens.
3. AR display device according to claim 2, which is characterized in that when described image grenade instrumentation include image source,
With mirror and when lens, fitted closely between the side and the image source of the matching mirror；The other side is fitted closely with the lens.
4. AR display device according to claim 2, which is characterized in that when described image grenade instrumentation include image source and thoroughly
When mirror, fitted closely between the image source and the lens.
5. AR display device according to any one of claims 1 to 4, which is characterized in that the polarization spectroscope includes
Light polarizing film and polarization beam splitter；
The light polarizing film is used for the polarised light by polarization state for first direction, absorbs the polarised light that polarization state is second direction；
The polarization beam splitter is used for the polarised light by polarization state for first direction, and reflected polarization state is the polarization of second direction
Light；
The first direction and the second direction are mutually perpendicular to.
6. AR display device according to claim 5, which is characterized in that the polarization beam splitter, which is located at, closes on described image
The side of grenade instrumentation and the wave plate component, the light polarizing film are located remotely from described image grenade instrumentation and the wave plate component
Side.
7. AR display device according to claim 5, which is characterized in that the polarization spectroscope further includes spectroscope base
Piece；The spectroscope substrate is located among the light polarizing film outside, the light polarizing film and the polarization beam splitter or the polarization
On the outside of spectro-film.
8. AR display device according to claim 6 or 7, which is characterized in that the plane of reflection of the polarization spectroscope and
The curved surface reduce by half reflecting mirror optical axis between angle be α；The reflection of the normal of the image source and the polarization spectroscope is flat
Angle between face is β；The value range of α is and 90 ° >=α >=0 ° between β -10 ° to+10 ° of β.
9. AR display device according to claim 8, which is characterized in that β is 0 °~90 °.
10. AR display device according to claim 8, which is characterized in that β is 40 °~50 °.
11. AR display device according to claim 9 or 10, which is characterized in that when the first direction polarised light and
The polarised light of the second direction meet be mutually perpendicular under the premise of around light propagate 0 °~360 ° rotations in direction when, it is described
Polarization beam splitter and the wave plate component will also change corresponding angle.
12. AR display device according to claim 11, which is characterized in that the wave plate component is quarter wave plate.
13. AR display device according to claim 12, which is characterized in that the quarter wave plate is set to the polarization point
Light microscopic and the curved surface reduce by half between reflecting mirror.
14. AR display device according to claim 12, which is characterized in that the quarter wave plate fits in the curved surface folding
The inside of half-reflecting mirror.
15. AR display device described in 3 or 14 according to claim 1, which is characterized in that the curved surface reduces by half reflecting mirror including bent
Face mirror substrate and semi-transparent semi-reflecting film, the semi-transparent semi-reflecting film are located remotely from the side of the wave plate component.
16. AR display device according to claim 15, which is characterized in that the curved surface reflecting mirror that reduces by half further includes anti-reflection
Film；The anti-reflection film is located at the side for closing on the wave plate component.
17. AR display device according to claim 2, which is characterized in that the refractive index of the matching mirror is 1~2.7.
18. AR display device according to claim 17, which is characterized in that the matching mirror is by liquid material, liquid crystal, half
Solid-state material or solid material are constituted.
19. AR display device according to claim 18, which is characterized in that when the matching mirror is liquid material, liquid crystal
Or when semisolid material, described image grenade instrumentation further includes sealing structure, and matching mirror is sealed in the image source and described
Between mirror.
20. AR display device according to claim 18, which is characterized in that when the matching mirror is solid material, institute
Image source, matching mirror and the lens are stated to be connected directly to one another.
21. AR display device according to claim 1, which is characterized in that the image source is the image source or list of integrated optical source
One image source.
22. a kind of wearable AR equipment, which is characterized in that including described in any one of clamping piece and the claims 1~21
AR display device.
Priority Applications (30)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810146905.8A CN110161685A (en) | 2018-02-12 | 2018-02-12 | AR display device and wearable AR equipment |
| PCT/CN2019/074863 WO2019154429A1 (en) | 2018-02-12 | 2019-02-12 | Wearable ar system, and ar display device and projection source module thereof |
| CN201980001716.4A CN110573933A (en) | 2018-02-12 | 2019-02-12 | Wearable AR system, AR display equipment and projection source module thereof |
| PCT/CN2019/074857 WO2019154428A1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device, optical system and half mirror employed therein |
| EP19751742.8A EP3754411A4 (en) | 2018-02-12 | 2019-02-12 | Wearable ar system, ar display device, and projection source module thereof |
| CN201980001732.3A CN110537135A (en) | 2018-02-12 | 2019-02-12 | Augmented reality equipment and its employed in optical system and half-reflecting mirror |
| PCT/CN2019/074852 WO2019154426A1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system used therein |
| KR1020207026342A KR102564295B1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system and semi-reflector therefor |
| EP19750619.9A EP3754408A4 (en) | 2018-02-12 | 2019-02-12 | Wearable ar system, and ar display device and projection source module thereof |
| CN201980001731.9A CN110546550A (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system used therein |
| PCT/CN2019/074868 WO2019154430A1 (en) | 2018-02-12 | 2019-02-12 | Wearable ar system, ar display device, and projection source module thereof |
| JP2020565008A JP7418706B2 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system therefor |
| CN201980001727.2A CN110537134A (en) | 2018-02-12 | 2019-02-12 | Augmented reality equipment and its employed in optical system |
| KR1020207026193A KR102628264B1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality devices and optical systems used in augmented reality devices |
| JP2020565009A JP7329207B2 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system and semi-reflector therefor |
| PCT/CN2019/074876 WO2019154432A1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system used therein |
| EP19750620.7A EP3754409A4 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system used therein |
| EP19750326.1A EP3754407B1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system used therein |
| EP19750958.1A EP3754410A4 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device, optical system and half mirror employed therein |
| CN201980001721.5A CN110537133A (en) | 2018-02-12 | 2019-02-12 | Wearable AR system, AR show equipment and its projection source mould group |
| KR1020207026326A KR102455328B1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system therefor |
| JP2020565011A JP7285579B2 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system therefor |
| US16/930,156 US11693245B2 (en) | 2018-02-12 | 2020-07-15 | Wearable AR system, AR display device and its projection source module |
| US16/930,000 US11042040B2 (en) | 2018-02-12 | 2020-07-15 | Augmented reality apparatus and optical system therefor |
| US16/930,061 US11693244B2 (en) | 2018-02-12 | 2020-07-15 | Augmented reality apparatus and optical system therefor |
| US16/989,502 US11874466B2 (en) | 2018-02-12 | 2020-08-10 | Augmented reality apparatus, and optical system and semi-reflector therefor |
| US16/990,633 US11500205B2 (en) | 2018-02-12 | 2020-08-11 | Wearable AR system, AR display device and its projection source module |
| US17/326,014 US11460704B2 (en) | 2018-02-12 | 2021-05-20 | Augmented reality apparatus and optical system therefor |
| US18/325,986 US11988839B2 (en) | 2018-02-12 | 2023-05-30 | Augmented reality apparatus and optical system therefor |
| US18/624,141 US20240241384A1 (en) | 2018-02-12 | 2024-04-02 | Augmented reality apparatus and optical system therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810146905.8A CN110161685A (en) | 2018-02-12 | 2018-02-12 | AR display device and wearable AR equipment |
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| CN110161685A true CN110161685A (en) | 2019-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810146905.8A Pending CN110161685A (en) | 2018-02-12 | 2018-02-12 | AR display device and wearable AR equipment |
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