CN110161687A - AR display device and wearable AR equipment - Google Patents
AR display device and wearable AR equipment Download PDFInfo
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- CN110161687A CN110161687A CN201810146915.1A CN201810146915A CN110161687A CN 110161687 A CN110161687 A CN 110161687A CN 201810146915 A CN201810146915 A CN 201810146915A CN 110161687 A CN110161687 A CN 110161687A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
-
- 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
-
- 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
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
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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
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0112—Head-up displays characterised by optical features comprising device for genereting colour display
- G02B2027/0114—Head-up displays characterised by optical features comprising device for genereting colour display comprising dichroic elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
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- Optics & Photonics (AREA)
Abstract
The present invention provides a kind of AR display devices and wearable AR equipment, belong to augmented reality technical field of imaging.For AR display device of the invention using delay polarization spectroscope, delay polarization spectroscope includes delay wave plate, light polarizing film and the polarization beam splitter being arranged successively；Delay wave plate is located remotely from the side of described image grenade instrumentation, for changing the polarization state of polarised light；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；Polarization beam splitter is located at the side for closing on described image grenade instrumentation, and for being the polarised light of first direction by polarization state, reflected polarization state is the polarised light of second direction.After postponing polarization spectroscope, substantially noiseless light is reflected into human eye external interference light, can remove interference light, improves the contrast of image light and ambient light, reduces interference.
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 have been added to the same picture or sky in real time
Between exist 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 top
Lens 12 are injected downwards.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, is done
It disturbs light also while being injected upwards from spectroscopical lower section.The some light of image light is bent by the reflection directive of spectroscope 3
Face 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 passes through curved surface half-reflecting mirror 4 and spectroscope 3 arrives at human eye；The some light of interference light passes through spectroscope 3
Reflection arrive at human eye.Parts of images light, component environment light and part interference light finally arrive at human eye simultaneously, so that with
Family 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 equipment has the following deficiencies: that existing AR equipment due to using common spectroscope, causes interference with light
Largely enter human eye, and the contrast of the external interference light severe jamming image source image injected, so that picture material is chaotic.
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 delay polarization spectroscope, can be improved picture contrast, reduce interference.
In a first aspect, the embodiment of the invention provides a kind of AR display device, including image projection apparatus and delay polarization
Spectroscope；
Described image grenade instrumentation includes image source；
The delay polarization spectroscope includes delay wave plate, light polarizing film and the polarization beam splitter being arranged successively；
The delay wave plate is located remotely from the side of described image grenade instrumentation；
The polarization beam splitter is located at the side for closing on described image grenade instrumentation.
In preferred embodiments of the present invention, the wave plate that postpones is for changing the polarization state of polarised light；
The light polarizing film is used for the polarised light by polarization state for first direction, absorbs the polarization that polarization state is second direction
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.
In preferred embodiments of the present invention, the delay polarization spectroscope further includes anti-reflection film.
In preferred embodiments of the present invention, the anti-reflection film is located at the delay side of the wave plate far from the image source.
In preferred embodiments of the present invention, the delay polarization spectroscope further includes substrate.
In preferred embodiments of the present invention, the substrate is located at the delay side of the wave plate far from the image source；
Or the substrate is between the delay wave plate and the light polarizing film；
Or the substrate is between the light polarizing film and the polarization beam splitter；
The substrate is located at the polarization beam splitter close to the side of the image source.
In preferred embodiments of the present invention, the anti-reflection film is located at the delay polarization spectroscope far from the image source
Side.
In preferred embodiments of the present invention, the anti-reflection film is located at the two sides of the delay polarization spectroscope.
In preferred embodiments of the present invention, described image grenade instrumentation further includes matching mirror and/or lens.
It is described when described image grenade instrumentation includes image source, matching mirror and lens in preferred embodiments of the present invention
It matches and is fitted closely between the side and the image source of mirror；The other side is fitted closely with the lens.
In preferred embodiments of the present invention, when described image grenade instrumentation includes image source and lens, the image source with
It is fitted closely between the lens.
In preferred embodiments of the present invention, described device further includes wave plate component and curved surface half-reflecting mirror；The delay
Polarization spectroscope is arranged successively with the wave plate component and the curved surface half-reflecting mirror, collectively constitutes polarization optical path component.
In preferred embodiments of the present invention, the plane of reflection and the curved surface half-reflecting mirror of the delay polarization spectroscope
Optical axis between angle be α；The normal of the image source and it is described delay polarization spectroscope the plane of reflection between angle be
β；α value range is and 90 ° >=α >=0 ° between β -10 ° to+10 ° of β.
In preferred embodiments of the present invention, β is 0 °~90 °.
In preferred embodiments of the present invention, β is 40 °~50 °.
In preferred embodiments of the present invention, 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, the polarization beam splitter and the wave plate group
Part will also change corresponding angle.
In preferred embodiments of the present invention, the wave plate component is quarter wave plate.
In preferred embodiments of the present invention, the quarter wave plate is set to the delay polarization spectroscope and the curved surface
Between half-reflecting mirror；
Or the quarter wave plate fits in the inside of the curved surface half-reflecting mirror.
In preferred embodiments of the present invention, the refractive index of the matching mirror is 1~2.7.
In preferred embodiments of the present invention, the matching mirror is by liquid material, liquid crystal, semisolid material or solid material
It constitutes.
It is described when the matching mirror is liquid material, liquid crystal or semisolid material in preferred embodiments of the present invention
Image projection apparatus further includes sealing structure, and matching mirror is sealed between the image source and the lens.
In preferred embodiments of the present invention, when the matching mirror is solid material, the image source, matching mirror and described
Lens are connected directly to one another.
In preferred embodiments of the present invention, 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 AR equipment, aobvious including clamping piece and above-mentioned AR
Showing device.
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 are provided with delay polarization spectroscope, delay
Polarization spectroscope includes delay wave plate, light polarizing film and the polarization beam splitter being arranged successively, and can remove interference light, improves image
The contrast of light and ambient light reduces interference.
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, claims
And specifically noted structure is achieved and obtained in 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 cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
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 is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, 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 delay polarization spectroscope provided by the embodiment of the present invention；
Fig. 5 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- prolongs
Slow polarization spectroscope；51- substrate；52- postpones wave plate；53- light polarizing film；54- polarization beam splitter；6- wave plate component.
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 matched with a variety of different
It sets to arrange and design.Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below
The range of claimed invention, but it is merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work, belongs to the present invention
The range of protection.
It is easy aiming at the problem that interference light, which enters, influences picture contrast existing AR display device, the present invention is real
It applies example and provides a kind of AR display device and wearable AR equipment, be situated between in detail to AR display device of the invention first below
It continues.
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, postpone polarization spectroscope 5, wave plate component 6 and curved surface half-reflecting mirror 4.Postpone polarization spectroscope 5 and wave plate component 6 and curved surface half
Reflecting mirror 4 is arranged successively, and collectively constitutes 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, and image source 11 can
To use plane image source, the including but not limited to image source of integrated optical source or single image source.For example, OLED (Organic Light-
Emitting Diode, Organic Light Emitting Diode), LCOS (Liquid Crystal On Silicon, liquid crystal on silicon), LCD
(Liquid Crystal Display, liquid crystal display), MEMS (Microelectromechanical Systems, microcomputer
Electric display system), the electronics devices of the displaying principles such as DMD (Digital Micro-mirror Device, digital micromirror elements)
Part.Wherein, OLED and LCD is the image source of integrated optical source；LCOS, MEMS and DMD are single image source, need in addition to increase fill-in 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 refractive index of air.
Matching mirror 13 can be made of transparent liquid material, such as water, alcohol etc.；It can also be made of transparent solid material, example
Such as glass, resin；It can also be made of liquid crystal or semisolid material.
When the material for matching mirror 13 is liquid, it is provided with outer seal structure between lens 12 and image source 11, for example, close
Frame is closed, makes to form closed cavity between lens 12 and image source 11, matching mirror material is prevented to be lost.When the material of matching mirror 13
Matching mirror 13 can be directly connected to when being solid, between image source 11 and lens 12, without frame.That is image source 11 and matching mirror 13 is straight
It connects or is bonded by glue in succession, match mirror 13 and lens 12 are directly connected to or are bonded by glue.
Lens 12 can be the lens group an of lens or multiple lens composition.Every face lens can be in lens or lens group
It is convex lens, concavees lens or convex lens and concavees lens any combination etc., the face type of lens can be spherical surface, aspherical, freedom song
Light refraction, matching polarized light road component are completed to be imaged by face 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, a side
The size that face 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, the more difficult raising of numerical aperture, system
Limiting resolution is limited, and design difficulty is high.And since the refringence of air and lens interface is away from larger, so that the face
Reflectivity 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 optical system
The additional image that 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
With mirror, since matching mirror material has high transparency and certain refractive index, compared with air dielectric, reduces light and enter thoroughly
The refringence of interface when mirror, improves lens upper surface transmitance, increases light efficiency, while inhibiting stray light and ghost image
It generates.It further says, the refractive index of air is 1, and the refractive index of matching mirror material can be between 1~2.7, according to R=
(R is diffraction spot radius to (0.61* λ)/(n*sin θ) calculation formula, and λ is optical wavelength, and n is image planes refractive index, and θ is input aperture
Angle), the refractive index for improving medium is capable of providing smaller diffraction pattern, improves imaging resolution.By improving image space refractive index,
Biggish numerical aperture is realized with relatively small angular aperture, reduces the deflection angle of rim ray, reduces design difficulty.
Polarizing optical path component includes the delay polarization spectroscope 5, wave plate component 6 and curved surface being arranged successively in the horizontal direction
Half-reflecting mirror 4.Delay polarization spectroscope 5 is located at the below or above of image projection apparatus 1.
As shown in figure 4, delay polarization spectroscope 5 include be arranged successively substrate 51, delay wave plate 52, light polarizing film 53 and partially
Shake spectro-film 54.Postpone wave plate 52 for changing the polarization state of polarised light.Light polarizing film 53 is used to through polarization state be first party
To polarised light, absorb polarization state be second direction polarised light.Polarization beam splitter 54 is used to through polarization state be first direction
Polarised light, reflected polarization state be second direction polarised light.Delay polarization spectroscope 5 is obliquely installed, and polarization beam splitter 54
In the side for closing on image projection apparatus 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 can
To rotate under the premise of satisfaction is mutually perpendicular to around the light direction of propagation, therefore, first direction polarised light is also possible to polarization state
With the polarised light of the direction P at an angle, second direction polarised light is also possible to polarization state and the polarization of the direction S at an angle
Light, in the embodiment of the present invention, without limiting.
Delay wave plate 52 can use quarter wave plate.When external interference light or stray light, by polarization beam splitter and
After light polarizing film, the polarised light of second direction is absorbed by light polarizing film, and the polarised light of first direction passes through quarter wave plate, by substrate reflection,
Then quarter wave plate is again passed through, 90 ° of change of polarized direction, forms the polarised light of second direction, it is inclined when using light polarizing film
Light film absorbs, and therefore, stray light can not enter back into optical path, to prevent stray light by polarization beam splitter and light polarizing film, directly
Optical path can be reentered after substrate reflection by, which connecing, forms ghost image, and low in cost, and effect is obvious, can effectively improve image
Contrast interferes picture by ghost image, promotes picture quality.
In actual production, substrate, delay wave plate, light polarizing film and polarization beam splitter through-thickness put in order, can
Be it is as shown in Figure 4, be followed successively by substrate, delay wave plate, light polarizing film and polarization beam splitter, i.e. substrate is located at the outer of delay wave plate
Side；Or delay wave plate, substrate, light polarizing film and polarization beam splitter, i.e. substrate are located between delay wave plate and light polarizing film；?
It can be delay wave plate, light polarizing film, substrate and polarization beam splitter, i.e., substrate is between light polarizing film and polarization beam splitter；Or
For delay wave plate, light polarizing film, polarization beam splitter and substrate, i.e. substrate is located on the outside of polarization beam splitter.
Optionally, delay polarization spectroscope 5 can not also include substrate, only include delay wave plate, light polarizing film and polarization point
Light film.Polarization beam splitter is located at the side for closing on image projection apparatus and wave plate component, and delay wave plate is located remotely from image projection
The side of device and wave plate component.When not having substrate, delay polarization spectroscope can still remove interference light, improve image
The contrast of light and ambient light.
As shown in Fig. 2, the plane of reflection of delay polarization spectroscope 5 and the optical axis of curved surface half-reflecting mirror 4 are in the angle α, the picture
Angle between the normal in source and the plane of reflection of the delay polarization spectroscope is β；α value range be β -10 ° to+10 ° of β it
Between, and 90 ° >=α >=0 °.β is preferably 40 ° -50 ° between 0 ° -90 °, at this point, the visual field of image light is maximum, image light
Visual range it 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 circularly polarized 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 aspherical
Structure.Quarter wave plate can be set between delay polarization spectroscope 5 and curved surface half-reflecting mirror 4, as shown in Figure 2.
The working principle of AR display device provided in an embodiment of the present invention is as follows: the image light being emitted from lens 12 enters
Onto delay polarization spectroscope 5, image light touches polarization beam splitter 54 first, and the polarization direction in image light is at this time
The polarised light of second direction can be reflected onto wave plate component 6.Polarization direction is that the polarised light of second direction passes through wave plate component 6,
It is changed into circularly polarized light, then a part injects to the external world through curved surface half-reflecting mirror 4, and another part is anti-by curved surface half-reflecting mirror 4
It penetrates.Reflected image light becomes the first polarised light through quarter wave plate, by circularly polarized light, i.e. polarization state is the inclined of first direction
Shake light.The first polarised light after transformation is again incident on polarization spectroscope 5, since polarization direction is first direction, at this time light
It passes through polarization beam splitter, light polarizing film, delay wave plate and substrate to enter in human eye, enables users to the void for seeing big visible angle
Quasi- image.
When ambient light incidence curved surface half-reflecting mirror 4, a part of ambient light penetrates curved surface half-reflecting mirror 4, wave plate group
Part 6 and delay polarization spectroscope 5 allow users to see true external environment into human eye, by virtual image and really
The Overlapping display of environment achievees the effect that augmented reality.
Above-mentioned first direction polarised light and second direction polarised light can pass under the premise of satisfaction is mutually perpendicular to around light
The rotation of 0~360 ° of the direction broadcast, polarization beam splitter and quarter wave plate will also change corresponding angle at this time.Therefore, in production,
The peace of delay polarization spectroscope and wave plate component can be determined according to the angle of first direction polarised light and second direction polarised light
Fill angle.
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 promote image quality and optical property by increasing lens numbers.
Compared with prior art, the embodiment of the present invention can be improved 1 times of the efficiency of light energy utilization or more using polarization optical path component, image light
Energy efficiency can be promoted to about 25%, improve image light brightness, save power consumption, reduce system heat generation amount.
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, reduces side
The deflection angle of edge light, 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, delay 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, ghost image caused by stray light is removed, low in cost, effect is obvious, improves image optical contrast ratio.Picture is not
It is interfered by ghost image, picture quality is promoted；
8th, in the case where same image light brightness demand, which can reduce equipment with energy saving
Calorific value.
Embodiment two
A kind of AR display device is present embodiments provided, as shown in figure 5, the AR display device, including image projection apparatus 1
With 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.Picture
Source 11 is fitted closely with lens 12.
Since image source 11 and lens 12 fit closely, the image light that image source 11 issues be will be directed into lens 12,
The refringence for reducing interface when light enters lens improves lens upper surface transmitance, increases light efficiency, can also
To 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 not
It repeats again.
Embodiment three
The embodiment of the invention also provides a kind of wearable AR equipment, including clamping piece and above-described embodiment one or embodiment
AR display device documented by 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 group
Part, polarization optical path component include the delay polarization spectroscope, wave plate component and curved surface half-reflecting mirror being arranged successively, image projection dress
Above or below delay polarization spectroscope.
The wearable AR equipment is passed through when extraneous interference light using delay polarization spectroscope and is postponed polarization spectroscope,
Substantially noiseless light is reflected into human eye, to improve picture contrast, reduces interference.The figure being emitted from image projection apparatus
Postpone on polarization spectroscope as light projects, polarization state is the light of first direction through delay polarization spectroscope in image light
Into external environment, the partial polarization state in image light is that the light of second direction is reflected on wave plate component；Pass through wave plate
Component is changed into circularly polarized light, is incident to curved surface half-reflecting mirror, and a part of light is projected to the external world, and another part is anti-by curved surface half
It penetrates after mirror reflection using wave plate component, the light that polarization state is first direction is transformed by circularly polarized light, through delay polarization point
Light microscopic enters human eye, allows users to the virtual image for seeing big visible angle, improves the efficiency of light energy utilization, improve image light
Line brightness.In the case where same image light brightness demand, which can reduce equipment heating with energy saving
Amount.
Meanwhile having the further advantage that by improving image space refractive index, biggish number is realized with relatively small angular aperture
It is worth aperture, reduces the deflection angle of rim ray, reduce design difficulty；Reduce the refringence of lens interface, improves
The transmitance of rim ray reduces ghost image, and highlights；Element arrangements are compact, are convenient for adjustment, system strength is high, and weight is more
Gently, comfortable wearing；The energy efficiency of image light is promoted to about 25%, brightness is obviously improved；Ghost image caused by stray light is removed,
Low in cost, effect is obvious, improves image optical contrast ratio.Picture is not interfered by ghost image, and picture quality is promoted；In same image
In the case where light luminance demand, which can reduce equipment heating amount with energy saving.
AR display device provided in an embodiment of the present invention and wearable AR equipment technical characteristic having the same, so also can
Identical technical problem is solved, identical technical effect is reached.
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 integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language 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, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" 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 the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, those skilled in the art should understand that: anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover in protection of the invention
Within the scope of.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (24)
1. a kind of AR display device, which is characterized in that including image projection apparatus and delay polarization spectroscope；
Described image grenade instrumentation includes image source；
The delay polarization spectroscope includes delay wave plate, light polarizing film and the polarization beam splitter being arranged successively；
The delay wave plate is located remotely from the side of described image grenade instrumentation；
The polarization beam splitter is located at the side for closing on described image grenade instrumentation.
2. AR display device according to claim 1, which is characterized in that the delay wave plate is for changing the inclined of polarised light
Vibration state；
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.
3. AR display device according to claim 1, which is characterized in that the delay polarization spectroscope further includes anti-reflection
Film.
4. AR display device according to claim 3, which is characterized in that it is separate that the anti-reflection film is located at the delay wave plate
The side of the image source.
5. AR display device according to claim 1, which is characterized in that the delay polarization spectroscope further includes substrate.
6. AR display device according to claim 5, which is characterized in that the substrate is located at the delay wave plate far from institute
State the side of image source；
Or the substrate is between the delay wave plate and the light polarizing film；
Or the substrate is between the light polarizing film and the polarization beam splitter；
The substrate is located at the polarization beam splitter close to the side of the image source.
7. AR display device according to claim 2, which is characterized in that the anti-reflection film is located at the delay polarization spectro
Side of the mirror far from the image source.
8. AR display device according to claim 2, which is characterized in that the anti-reflection film is located at the delay polarization spectro
The two sides of mirror.
9. AR display device according to claim 1, which is characterized in that described image grenade instrumentation further includes matching mirror
And/or lens.
10. AR display device according to claim 9, 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.
11. AR display device according to claim 9, which is characterized in that when described image grenade instrumentation include image source and
When lens, fitted closely between the image source and the lens.
12. AR display device according to claim 1, which is characterized in that described device further includes wave plate component and curved surface
Half-reflecting mirror；The delay polarization spectroscope is arranged successively with the wave plate component and the curved surface half-reflecting mirror, is collectively constituted
Polarize optical path component.
13. AR display device according to claim 12, which is characterized in that the plane of reflection of the delay polarization spectroscope
Angle between the optical axis of the curved surface half-reflecting mirror is α；The normal of the image source and it is described delay polarization spectroscope it is anti-
The angle penetrated between plane is β；α value range is and 90 ° >=α >=0 ° between β -10 ° to+10 ° of β.
14. AR display device according to claim 13, which is characterized in that β is 0 °~90 °.
15. AR display device according to claim 13, which is characterized in that β is 40 °~50 °.
16. AR display device according to claim 12, which is characterized in that when the polarised light of the first direction and described
The polarised light of second direction meet be mutually perpendicular under the premise of around light propagate 0 °~360 ° rotations in direction when, the polarization
Spectro-film and the wave plate component will also change corresponding angle.
17. AR display device according to claim 12, which is characterized in that the wave plate component is quarter wave plate.
18. AR display device according to claim 17, which is characterized in that it is inclined that the quarter wave plate is set to the delay
It shakes between spectroscope and the curved surface half-reflecting mirror；
Or the quarter wave plate fits in the inside of the curved surface half-reflecting mirror.
19. AR display device according to claim 10, which is characterized in that the refractive index of the matching mirror is 1~2.7.
20. AR display device according to claim 19, which is characterized in that the matching mirror is by liquid material, liquid crystal, half
Solid-state material or solid material are constituted.
21. AR display device according to claim 20, 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 the matching mirror is sealed in the image source and institute
It states between lens.
22. AR display device according to claim 20, 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.
23. 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.
24. a kind of wearable AR equipment, which is characterized in that including described in any one of clamping piece and the claims 1~23
AR display device.
Priority Applications (29)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810146915.1A CN110161687A (en) | 2018-02-12 | 2018-02-12 | AR display device and wearable AR equipment |
| CN201980001727.2A CN110537134A (en) | 2018-02-12 | 2019-02-12 | Augmented reality equipment and its employed in optical system |
| CN201980001721.5A CN110537133A (en) | 2018-02-12 | 2019-02-12 | Wearable AR system, AR show equipment and its projection source mould group |
| CN201980001716.4A CN110573933A (en) | 2018-02-12 | 2019-02-12 | Wearable AR system, AR display equipment and projection source module thereof |
| PCT/CN2019/074852 WO2019154426A1 (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 |
| JP2020565008A JP7418706B2 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system therefor |
| EP19751742.8A EP3754411A4 (en) | 2018-02-12 | 2019-02-12 | Wearable ar system, ar display device, and projection source module thereof |
| EP19750620.7A EP3754409A4 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system used therein |
| JP2020565011A JP7285579B2 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system therefor |
| PCT/CN2019/074857 WO2019154428A1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device, optical system and half mirror employed therein |
| KR1020207026326A KR102455328B1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system therefor |
| 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 |
| PCT/CN2019/074863 WO2019154429A1 (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 |
| EP19750326.1A EP3754407B1 (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 |
| CN201980001732.3A CN110537135A (en) | 2018-02-12 | 2019-02-12 | Augmented reality equipment and its employed in optical system and half-reflecting mirror |
| EP19750619.9A EP3754408A4 (en) | 2018-02-12 | 2019-02-12 | Wearable ar system, and ar display device and projection source module thereof |
| US16/930,061 US11693244B2 (en) | 2018-02-12 | 2020-07-15 | Augmented reality apparatus and optical system therefor |
| US16/930,000 US11042040B2 (en) | 2018-02-12 | 2020-07-15 | Augmented reality apparatus 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 |
| US16/989,502 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810146915.1A CN110161687A (en) | 2018-02-12 | 2018-02-12 | AR display device and wearable AR equipment |
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| Publication Number | Publication Date |
|---|---|
| CN110161687A true CN110161687A (en) | 2019-08-23 |
Family
ID=67635011
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810146915.1A Pending CN110161687A (en) | 2018-02-12 | 2018-02-12 | AR display device and wearable AR equipment |
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