CN206906704U - A kind of light and thin type virtual image forming device and use its near-eye display device - Google Patents
A kind of light and thin type virtual image forming device and use its near-eye display device Download PDFInfo
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- CN206906704U CN206906704U CN201720639555.XU CN201720639555U CN206906704U CN 206906704 U CN206906704 U CN 206906704U CN 201720639555 U CN201720639555 U CN 201720639555U CN 206906704 U CN206906704 U CN 206906704U
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Abstract
It the utility model is related to a kind of light and thin type virtual image forming device and use its near-eye display device, include amplifying lens, reflection type polarizer and it is placed in phase varying components therebetween, the polarizability of light be make use of to amplify twice by amplifying lens, realize that screen is located at the amplification requirement to display image when in nearly Vitrea eye domain, make integral device very frivolous.
Description
Technical field
It the utility model is related to a kind of light and thin type virtual image forming device, more particularly to a kind of regarding greatly with afocal lens realization
The lightening virtual image forming device in field, in the case of using transparent display element, near-eye display device is formed, realizes virtual reality
Nearly eye show various applications.
Background technology
Virtual reality (virtual reality, VR) and the concept of augmented reality (augmented reality, AR) carry
Since going out, have been limited to the data processing amount of image processor, the refresh rate of display, feedback speed of sensor etc. because
Element, cause the VR/AR equipment that can obtain better effects to be difficult to avoid that relatively large volume, and consumer layer can not be obtained
Extensive use on face.And in recent years, with flourishing for consumer electronics, the VR/AR displays of wear-type are (also known as
VR/AR glasses, or nearly eye display device) progressively reach what consumer can bear on device volume and user interactivity
Scope, and be more and more called calculating platform of future generation and held in both hands by all big enterprises' heat.
In VR fields, in order to pursue feeling of immersion, most of existing product, which is located at the optical element of user at the moment, to be had necessarily
Thickness and be closed in eye circumference, the distance by adjusting display element and optical element can realize that certain diopter is pervasive
Property, but it is difficult to lightening under big visual field, burden can be brought during wearing.In AR fields, the head-mounted display of transmission-type
(HMD) one or two will be come from using optical elements such as speculum (reflect mirror), prism and hololenses
The image light of (even more) small size display element is added in the visual pathway of user, in the form of the virtual image and by user
Vision system perceive.The visual angle (FOV) and luminous intensity that the image light that small size display element provides can reach depend on light
The selection and design of element are learned, will not using the mode of splicing although more wide visual angle can be realized by splicing
The complexity of evitable increase image optical processing system, and add the cost and volume of device.Meanwhile inherently
Say, optical element aims at increases image light in the visual pathway of user, and is influenceed and miniature by external environmental light
The virtual objects such as the limitation of display element brightness, augmented reality image look translucent (translucent) or had
Ghost image (ghosted), the image light intensity that the autonomous light emitting-type Micro display element particularly with low-power consumption advantage is sent are difficult
To reach higher brightness degree, and the intensity of external environmental light can not be required and actively adapt to the image that Micro display element is sent
Brightness so that the image under augmented reality or other mixed reality situations looks untrue.
Utility model content
A kind of light and thin type virtual image forming device is the utility model is related to, based on the amplifying lens without burnt curved month type, is realized light
The virtual reality or augmented reality of thin big visual field show that the integral thickness of imaging device can be decreased to about below 20mm, can
Greatly to improve the usage experience of user.
According to a kind of virtual image forming device of the present utility model, including：
Amplifying lens, including first surface and second surface, the first surface or second surface there is beam splitter layer so that
Natural light can pass through the amplifying lens；
Phase varying components, it is adjacent with the amplifying lens, and be coaxially disposed with amplifying lens；
Reflection type polarizer, it is close to the phase varying components, is placed in the opposite side of the amplifying lens,
Wherein, the thickness D of the amplifying lens in the direction of the optical axis meets 1mm≤D≤10mm, the virtual image forming device
Meet 10mm ＜ L ＜ 21mm in the thickness L along optical axis direction.
In a kind of specific example, the face type of first surface is consistent with the face type of second surface, so that the amplification is saturating
Mirror by its natural light to not possessing focal power；Or in other example, the face type of first surface and second surface
Face type is inconsistent so that the amplifying lens possesses predetermined focal power to the natural light by it, this predetermined focal power with
The diopter of observer's eyes matches.
Preferably, phase varying components are quarter wave plate；Reflection type polarizer can be sub-wave length metal grating structure.
Further, amplifying lens includes the adjacent surface of the first lens and the second lens, the first lens and the second lens
Keep identical surface face type and between have no more than 0.3mm interplanar distance.
According to amplifying lens of the present utility model, when it includes two lens, the first lens and the second lens have not
Same focal power type, form the class double agglutination lens group of concave-convex or male-female.
The utility model also provides a kind of near-eye display device with above-mentioned virtual image forming device, wherein further comprising
Display element, the display element are sent with predetermined polarization to display image to the virtual image forming device side
Polarised light.
Such display element can be liquid crystal display device, including light source, liquid crystal layer and translucency light guide plate, the light
Source is located at the side near surface of light guide plate.When realizing the application of non-transmissive, in the remote liquid crystal layer one of the light guide plate
The surface of side is covered with lighttight reflecting layer.
Optionally, such display element can also be OLED escope parts, in OLED escope part directions
The surface of the virtual image forming device side has polarizing layer.
According to virtual image forming device of the present utility model and near-eye display device, it is possible to achieve answering under VR and AR patterns
With when being only located at by the i.e. achievable screen of amplifying lens in nearly Vitrea eye domain, the amplification to display image requires, makes integral device
It is frivolous, it is more preferably comfortable when being worn as near-eye display device.
Brief description of the drawings
Fig. 1 is the nearly eye display device principle schematic with virtual image forming device of the present utility model
Fig. 2 is the virtual image forming schematic device according to the utility model first embodiment
Fig. 3 is to form nearly eye using the virtual image forming device of the utility model first embodiment according to the utility model to show
The schematic diagram of device
Fig. 4 is the virtual image forming schematic device according to the utility model second embodiment
Fig. 5 is the virtual image forming schematic device according to the utility model 3rd embodiment
Embodiment
The specific implementation virtual image of the present utility model is discussed in detail in refer to the attached drawing and the structure of each element etc. by herein below
The actual example of imaging device, identical or corresponding part use like number.The utility model can be with many different
Form is realized and should not be construed as limited by each embodiment set forth herein.And these embodiments are to provide so that the disclosure is filled
Divide and complete, and design of the present utility model is comprehensively passed on to those skilled in the art.In addition, in each embodiment
Feature can also be combined in the way of outside following embodiments, the technical scheme after combination still fall scope of the present application it
It is interior.
In the disclosure, statement " first " and " second " etc. can modify a variety of element of the disclosure, but unlimited
Element corresponding to system.For example, statement does not limit order and/or importance of corresponding element etc..Statement can be used
In an element is made a distinction with another element.For example, first user device and second user device are all
User's set, and represent different user's sets.For example, the first element can be named as the second element without de-
From spirit and scope of the present disclosure.In the same manner, the first element can also be named as even if the second element.
[first embodiment]
Fig. 1 shows the example embodiment of near-eye display device one with augmented reality ability, such as a kind of optical perspective formula
HMD device, including to add the virtual image forming device of image light, virtual image forming device is positioned over the front of eyes of user, class
Eyeglass lens are similar to, generally, there is provided a pair of virtual image forming devices, each eye are corresponding one.
Virtual image forming device is by the eyes of augmented reality (AR) image directive user, specifically, coming from real-world scene
120 light (i.e. ambient light), such as light 114, with the light from display element, such as light 116, merged at eyes of user,
So that user sees image 132.In image 132, it can be seen that a part for reality scene 120, such as a hurst,
And the image 104 for augmented reality from display element, for example now it is not present in woodsy flying bird.At this
Towards in the example of amusement, can be superimposed with the incoherent image of reality scene, for example flying bird replaced with dolphin, so that user
See that dolphin has leaped the peculiar image of trees.In the example towards advertisement, the image of the augmented reality can be revealed as wishing
The image for showing user, such as a tank carbonated drink on the table are hoped, and, it can also expand to many other applications.This
Art personnel are it should be understood that same virtual image forming device is readily applicable to the nearly eye for not possessing enhancing display capabilities
Display device, such as stop ambient light when entering virtual image device, the near-eye display device as virtual reality (VR).
According to the virtual image forming device of the utility model first embodiment, as shown in Fig. 2 including ambient side to observer one
Side is arranged in sequence with, amplifying lens 1, and phase varying components 2 and reflection type polarizer 3, wherein amplifying lens 1 are simple lens, tool
There are the first surface 11 of close ambient side (display element) and the second surface 12 close to observer side, in the present embodiment,
First surface has the part reflective semitransparent film for being divided, and the part reflective semitransparent film does not possess polarizability, ambient light part by when,
Its polarization state is not influenceed.When ambient light is incident to amplifying lens 1 in the form of natural light, part reflective semitransparent film by reflecting part from
Right light and permeation parts natural light, typical transflection ratio are 1:1, but not limited to this, transflection ratio can be according to luminous intensity need
To ask and be changed, the membrane system of corresponding part reflective semitransparent film is changed accordingly, or, it is selectable, it is former to add other light splitting
The beam splitter layer of reason, can be with equally applicable the utility model when it does not increase significant thickness on the first surface.
As shown in figure 3, the display element 10 that image light is provided in near-eye display device can be the LCD display members of small size
Part, sent to display image and to image light to observer side, in general, the image light that LCD display elements are sent has
Predetermined polarization state, the polarization state of emergent light determine with the polarizer inside LCD display elements；Display element 10 is sent
The image light with predetermined polarization be incident to amplifying lens 1, the half-reflection and half-transmission layer of the first surface 11 of amplified lens 1
Afterwards, the image light of transmission enters amplifying lens 1 from first surface 11, is traveled in amplifying lens 1 up to second surface 12, first
It is secondary to transmit amplifying lens 1, into phase varying components 2.As a kind of typical mode, phase varying components 2 are 1/4 ripples
Piece, image light pass through phase varying components 2, reach reflection type polarizer 3 for the first time, and reflection type polarizer 3 can be selected from such as
Sub-wave length metal grating is a kind of, polarised light high reflection to particular polarization, and to the orthogonal polarization in polarization direction therewith
Light is highly transmissive；Above-mentioned first time reaches the polarization state of the image light of reflection type polarizer 3 and the specific polarization of reflection type polarizer 3
Direction matches, so as to be again introduced into phase varying components 2 from the reflection of reflection type polarizer 3, through phase varying components 2 and amplification
The second surface 12 of lens 1 is transmitted, and the first surface 11 for reaching amplifying lens 1 is reflected back toward in amplifying lens, again passes by the
Two surfaces 12 are transmitted with after phase varying components 2, and polarization state reaches the state for meeting that reflection type polarizer 3 transmits, so as to arrive
It is imaged up to observer's eyes, due in the surface transmission with curvature and reflection, being equivalent to twice and make use of curved surface twice
Focal power is to change the direction of propagation, so as to reach the multiple requirement that optical amplifier is carried out to the image shown by display element.
Transparent type display element
Transparent type display element is before virtual image forming device of the present utility model realizes augmented reality (AR) mode of operation
Carry, a kind of typical transparent type display element can be liquid crystal display device (LCD), as one kind in the utility model preferably
Embodiment, it is as shown in Figure 3, liquid crystal display device LCD include the high brightness low-power consumption light source such as liquid crystal LC layers, LED/QD and
Translucency light guide plate, LED light source are arranged on the side of translucency light guide plate, and translucency light guide plate includes two tables being parallel to each other
Face, and there is between two surfaces the light splitting surface at pre-determined tilt angle with two surfaces, the light sent by light source is via light guide plate
Side is incident, is propagated in a manner of total reflection in light guide plate, has part reflective semitransparent film on light splitting surface, when light is passed to light splitting surface
When, due to the reflex of light splitting surface, the light of the face reflection that is split no longer meet total reflection condition and from two tables parallel to each other
It is emitted in face in face of the side of LC layers, as the illumination light of LC layers, LCD is turned into transparent display.When LC aspects product is smaller
When, light splitting surface can be only distributed in light guide plate in the region of face LC layers.The intensity of LED light source can adjust, existing by enhancing
The control of real image controller.
In the near-eye display device for showing there is augmented reality ability in Fig. 1, in addition to ambient light sensor (not shown),
To sense ambient light intensity, augmented reality image controller receives the signal provided from ambient light sensor, can weaken
Or strengthen LED light-source brightness, to adapt to ambient light and image light in the visual contrast requirement of user.For example, work as ring
When border light strength ratio is higher, ambient light enters by translucency light guide plate in itself is transmitted into the intensity of liquid crystal display device also phase
To higher, can be used as LCD outer light source, now the intensity of LED/QD light sources can maintain certain brightness, as
The intensity of loss of the ambient light after guide-lighting flaggy is compensated, the image light intensity sent to reach ambient light intensity and LCD exists
By, with probably consistent intensity, the image for seeing user is realistic during subsequent optical element.It is strong when ambient light
When spending relatively low, ambient light will be significantly smaller into the intensity for being transmitted into liquid crystal display device by translucency light guide plate, now
The intensity of LED light source needs to improve, to ensure that the image light that LCD is sent reaches certain brightness.But not limited to this, can also
LED brightness is adjusted according to ambient light intensity according to the needs of scene contrast, makes the display effect of augmented reality more preferably comfortable
With it is true.
Above-mentioned pattern is not limited to, the example of the near-eye display device shown in Fig. 1 is also used as the use of VR patterns, VR moulds
Because without transmitted ambient light, translucency light guide plate coats reflector layer on the laminated opposite faces of LC, with shading ring under formula
Border light and the illumination efficiency for improving LED light source.
When near-eye display device is operated in VR patterns, the face type of first surface and the face type of second surface are according to display member
The requirement of part size and enlargement ratio can be configured；And when near-eye display device is operated in AR patterns, it is necessary to using saturating
Bright type display element, and preferably, make first surface 11 and second surface 12 that there is consistent face type, now, for environment
For light, because it is natural light, the overwhelming majority does not possess polarization state, and in the case of two surface face type identicals, amplifying lens 1 is right
Focal power is not introduced for the ambient light being transmitted through, i.e., ambient light is successively by amplifying lens 1, the and of phase varying components 2
Reflection type polarizer 3, only occurs light energy losses, without changing the direction of propagation, is showed from observer's improvement of visual effect
For luminance-reduction, without influenceing ambient light in intraocular normal imaging, it is thereby achieved that the display effect of augmented reality.
As a kind of optional mode, first surface 11 and second surface 12 can have different face types, so that amplification
Lens 1 can be equivalent to the eyeglass corrected defects of vision relative to ambient light, pass through first surface 11 and the face type of second surface 12
Difference forms predetermined diopter to adapt to the diopter demand of observer, and first surface 11 is still used as half-reflection and half-transmission face, for display
The image light that element is sent provides curved surface focal power, to ensure that the image that display element is shown meets wanting for optical magnification
Ask.
According to the virtual image forming device of the utility model first embodiment, a kind of specific amplifying lens 1 can have such as
Each surface parameter shown in table 1, such simple lens can reach 1mm thickness, and be bent to display element direction to be formed
Meniscus shaped, from reflection type polarizer 3 near the surface of human eye side to amplifying lens 1 near the surface of display element side, institute
The axial width L for stating virtual image forming device is not more than 13mm, reduces the volume taken on user's direction of visual lines, is advantageous to fill
The miniaturization and lightweight put.
| Surface label | Curvature (unit mm) | Thickness (unit mm) | Refractive index |
| 1 | ∞ | 1 | 16.5270053837925 |
| 2 | ∞ | 0.1 | 16.8756545625419 |
| 3 | ∞ | 1 | 16.9332895894609 |
| 4 | ∞ | 4.93070726476682 | 17.2819387682103 |
| 5 | -33.6539903291253 | 1 | 17.3395819764002 |
| 6 | -33.6539903291253 | 0 | 14.8545154251814 |
| 7 | ∞ | 3.80134632929511 | 12.2410812048296 |
| 8 | ∞ | 1 | 9.35113657659484 |
| 9 | ∞ | 0 | 8.91599516990909 |
Table 1
[second embodiment]
As shown in figure 4, realize nearly eye display device of the present utility model can also use the virtual image such as second embodiment into
As device, including ambient side is arranged in sequence with to observer side, amplifying lens 1, phase varying components 2 and reflective polarizing
Piece 3, unlike first embodiment, amplifying lens 1 is double lens 1A, and double lens includes concavees lens and convex lens, two lens
Between there is a tiny air-gap, the adjacent surface of two lens is respectively close to the surface of ambient side (display element) on convex lens
Surface 12A, surface 11A and surface 12A on 11A and concavees lens close to observer side have consistent face type.In this embodiment party
In formula, surface 11A has part reflective semitransparent film, and the part reflective semitransparent film does not possess polarizability, ambient light part by when, do not influence
Its polarization state.When ambient light is incident to amplifying lens 1 in the form of natural light, part reflective semitransparent film by reflecting part natural light simultaneously
Permeation parts natural light.
Accordingly, amplifying lens 1 similar with first embodiment, being formed as double lens 1A, have close to ambient side
First surface 11 and the second surface 12 close to observer side, as shown in Figure 4.When near-eye display device is operated in VR patterns,
The face type of first surface and the face type of second surface can be configured according to the requirement of display element size and enlargement ratio；And
When near-eye display device is operated in AR patterns, it is necessary to using transparent type display element, and preferably, make first surface 11 with
Second surface 12 has consistent face type, and now, for ambient light, because it is natural light, the overwhelming majority does not possess partially
Polarization state, in the case of the type identical of above-mentioned two surface face, amplifying lens 1A is still equivalent to plate glass on the whole, if ambient light
Pass through amplifying lens 1A, phase varying components 2 and reflection type polarizer 3 successively, light energy losses only occur, without changing
The direction of propagation, luminance-reduction is shown as from observer's improvement of visual effect, without influenceing ambient light in intraocular normal imaging,
It is thereby achieved that the display effect of augmented reality.
According to the virtual image forming device of the utility model second embodiment, the amplification that a kind of specific double lens 1A is formed is saturating
Mirror 1 can have each surface parameter as shown in table 2, and such double lens 1A has thick along optical axis direction no more than 6mm
Degree, including the airspace with about 0.1mm between surface 11A and surface 12A, with similar double glued lens
Constituted mode realize double lens 1A, can so realize the reduction of virtual image forming device actual aberration and the increase of magnifying power,
But it is corresponding, from reflection type polarizer 3 near the surface of human eye side to amplifying lens 1 near the surface of display element side,
The axial width L about 21mm of the virtual image forming device.
| Surface label | Curvature (unit mm) | Thickness (unit mm) | Refractive index |
| 1 | ∞ | 1 | 16 |
| 2 | ∞ | 0.1 | 16 |
| 3 | ∞ | 1 | 16 |
| 4 | ∞ | 0.1 | 16 |
| 5 | 60.4789995842229 | 4.17 | 16 |
| 6 | -94.2651543543704 | 0.1 | 16 |
| 7 | -94.2651543543704 | 1 | 16 |
| 8 | 60.4789995842229 | 0 | 16 |
| 9 | ∞ | 12.2 | 13.9088872254126 |
| 10 | ∞ | 1 | 16 |
| 11 | ∞ | 0 | 10.8189036548695 |
Table 2
[3rd embodiment]
As shown in figure 3, according to the virtual image forming device of the utility model 3rd embodiment, it is different from second embodiment
It is, including ambient side is arranged in sequence with to observer side, reflection type polarizer 3, phase varying components 2 and amplifying lens 1, with
Similarly, amplifying lens 1 is double lens 1B to second embodiment, and double lens 1B includes concavees lens and convex lens, had between two lens
There is a tiny air-gap, the adjacent surface of two lens is respectively close to the surface 11B of ambient side (display element) on concavees lens
There is consistent face type with the surface 12B, surface 11B and surface 12B on convex lens close to observer side.In present embodiment
In, surface 11B has part reflective semitransparent film, and the part reflective semitransparent film does not possess polarizability (polarization state for not influenceing light), works as environment
When light is incident to amplifying lens 1 in the form of natural light, part reflective semitransparent film is by reflecting part natural light and permeation parts natural light.
Accordingly, amplifying lens 1 similar with first and second embodiment, being formed as double lens 1B, have close to ambient side
First surface 11 and second surface 12 towards ambient side, as shown in Figure 3.When near-eye display device is operated in VR patterns,
The face type of first surface and the face type of second surface can be configured according to the requirement of display element size and enlargement ratio；And
When near-eye display device is operated in AR patterns, it is necessary to using transparent type display element, and preferably, make first surface 11 with
Second surface 12 has consistent face type, and now, for ambient light, because it is natural light, the overwhelming majority does not possess partially
Polarization state, in the case of the type identical of above-mentioned two surface face, amplifying lens 1B is still equivalent to plate glass on the whole, if ambient light
Pass through reflection type polarizer 3, phase varying components 2 and amplifying lens 1B successively, light energy losses only occur, without changing
The direction of propagation, luminance-reduction is shown as from observer's improvement of visual effect, without influenceing ambient light in intraocular normal imaging,
It is thereby achieved that the display effect of augmented reality.
According to the virtual image forming device of the utility model 3rd embodiment, the amplification that a kind of specific double lens 1B is formed is saturating
Mirror 1 can have each surface parameter about shown in table 3, and such double lens 1B has no more than 5mm along optical axis direction thickness,
Including the airspace with about 0.1mm between surface 11B and surface 12B, with the structure of similar double glued lens
Double lens 1B is realized into mode, can so realize the reduction of virtual image forming device actual aberration and the increase of magnifying power, but phase
Answer, it is described from amplifying lens 1 near the surface of human eye side to reflection type polarizer 3 near the surface of display element side
The axial width L about 21mm of virtual image forming device.
| Surface label | Curvature (unit mm) | Thickness (unit mm) | Refractive index |
| 1 | -361.104887244362 | 0.85 | 14.2399436126742 |
| 2 | 56.4077576062901 | 0.1 | 15.6523597694952 |
| 3 | 56.4077576062901 | 3.5 | 15.8781832040196 |
| 4 | -361.104887244362 | 0.1 | 16.2340457291648 |
| 5 | ∞ | 1 | 16.5416969483132 |
| 6 | ∞ | 0.1 | 16.9321689902439 |
| 7 | ∞ | 1 | 17.1958857605869 |
| 8 | ∞ | 13.3 | 16.8874213927637 |
| 9 | ∞ | 1 | 10.6237277172717 |
| 10 | ∞ | 0 | 10.4995236955036 |
Table 3
Optionally, OLED escopes part can also as the transparent type display element in the utility model, but due to
OLED escopes part will not send the image light with polarization state in itself, when using OLED escope parts, show in OLED
Showing the exiting surface of device has polarizing layer.
According to virtual image forming device of the present utility model and near-eye display device, it is possible to achieve answering under VR and AR patterns
With the face type of first surface and second surface can be implemented as sphere, aspherical, the face such as free form surface type, form simple lens
Thickness of the amplifying lens on optical axis be decreased to 1-3mm, thickness of the amplifying lens that double lens is formed on optical axis does not also surpass
Cross 10mm, it is contemplated that the requirement of assembly precision and total length, the interval between double lens adjacent surface are no more than 0.3mm, so as to
To realize the lightening of overall virtual image forming device under big visual field；The half-reflection and half-transmission face of amplifying lens can be utilized in imaging process
Realization is amplified twice, and when meeting screen and be located in nearly Vitrea eye domain, the amplification to display image requires, and suitably reduces energy
Ambient light also effectively raise the image light and contrast of the ambient light at human eye during visual image that display element projects
Strong sense is spent, makes the display effect of augmented reality more preferably comfortable.
Described above is only embodiment of the present utility model, not structure of the present utility model is made any formal
Limitation.Every any simple modification made according to the technical essence of the utility model to above example, equivalent variations with
Modification, in the range of still falling within the technical solution of the utility model.
Claims (10)
1. a kind of light and thin type virtual image forming device, including：
Amplifying lens, including first surface and second surface, the first surface or second surface have beam splitter layer so that nature
Light can pass through the amplifying lens；
Phase varying components, it is adjacent with the amplifying lens, and be coaxially disposed with amplifying lens；
Reflection type polarizer, it is close to the phase varying components, is placed in the opposite side of the amplifying lens,
Wherein, the thickness D of the amplifying lens in the direction of the optical axis meets 1mm≤D≤10mm, and the virtual image forming device is on edge
The thickness L of optical axis direction meets 10mm ＜ L ＜ 21mm.
2. light and thin type virtual image forming device as claimed in claim 1, it is characterised in that the face type of the first surface and second
The face type on surface is consistent, so that the amplifying lens by its natural light to not possessing focal power；Or the first surface
Face type and second surface face type it is inconsistent so that the amplifying lens possesses predetermined focal power to the natural light by it,
The predetermined focal power and the diopter of observer's eyes match.
3. light and thin type virtual image forming device as claimed in claim 1, it is characterised in that the phase varying components are 1/4 ripple
Piece.
4. light and thin type virtual image forming device as claimed in claim 1, it is characterised in that the reflection type polarizer includes sub- ripple
Long metal grating structure.
5. light and thin type virtual image forming device as claimed in claim 1, it is characterised in that the amplifying lens includes the first lens
With the second lens, the adjacent surfaces of the first lens and the second lens keep identical surface face type and between have and be no more than
0.3mm interplanar distance.
6. light and thin type virtual image forming device as claimed in claim 5, it is characterised in that the first lens and the second lens tool
There is different focal power types, form the class double agglutination lens group of concave-convex or male-female.
7. a kind of near-eye display device with any light and thin type virtual image forming devices of claim 1-6, it is characterised in that also wrap
Display element is included, the display element is sent with predetermined polarisation to display image to the virtual image forming device side
The polarised light of state.
8. near-eye display device as claimed in claim 7, it is characterised in that the display element is liquid crystal display device, including
Light source, liquid crystal layer and translucency light guide plate, the light source are located at the side near surface of light guide plate.
9. near-eye display device as claimed in claim 8, it is characterised in that in the remote liquid crystal layer side of the light guide plate
Surface is covered with lighttight reflecting layer.
10. near-eye display device as claimed in claim 9, it is characterised in that the display element is OLED escope parts,
The OLED escopes part has polarizing layer towards the surface of the virtual image forming device side.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024773A (en) * | 2017-06-02 | 2017-08-08 | 北京耐德佳显示技术有限公司 | A kind of light and thin type virtual image forming device |
| CN109188695A (en) * | 2018-09-29 | 2019-01-11 | 北京蚁视科技有限公司 | A kind of nearly eye display device of slim big field angle |
| CN109709675A (en) * | 2019-02-26 | 2019-05-03 | 京东方科技集团股份有限公司 | Augmented reality shows equipment and augmented reality glasses |
| CN110596897A (en) * | 2019-09-17 | 2019-12-20 | 北京耐德佳显示技术有限公司 | Head-up display equipment |
| CN110873967A (en) * | 2019-11-28 | 2020-03-10 | Oppo广东移动通信有限公司 | Near-to-eye display optical system and head-mounted display |
| CN111474715A (en) * | 2020-04-23 | 2020-07-31 | 歌尔股份有限公司 | Optical system and augmented reality device |
| CN111766705A (en) * | 2020-06-19 | 2020-10-13 | 江西微瑞光学有限公司 | Short-distance and high-lens-birefringence-tolerance optical imaging module |
| CN111766706A (en) * | 2020-06-19 | 2020-10-13 | 江西微瑞光学有限公司 | Short-distance and high-lens-birefringence-tolerance optical imaging module |
| TWI800711B (en) * | 2020-03-06 | 2023-05-01 | 廣達電腦股份有限公司 | Optical system of miniature head-mounted display |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024773A (en) * | 2017-06-02 | 2017-08-08 | 北京耐德佳显示技术有限公司 | A kind of light and thin type virtual image forming device |
| CN107024773B (en) * | 2017-06-02 | 2023-12-19 | 北京耐德佳显示技术有限公司 | Light and thin virtual image imaging device |
| CN109188695A (en) * | 2018-09-29 | 2019-01-11 | 北京蚁视科技有限公司 | A kind of nearly eye display device of slim big field angle |
| CN109709675A (en) * | 2019-02-26 | 2019-05-03 | 京东方科技集团股份有限公司 | Augmented reality shows equipment and augmented reality glasses |
| CN110596897A (en) * | 2019-09-17 | 2019-12-20 | 北京耐德佳显示技术有限公司 | Head-up display equipment |
| CN110873967A (en) * | 2019-11-28 | 2020-03-10 | Oppo广东移动通信有限公司 | Near-to-eye display optical system and head-mounted display |
| TWI800711B (en) * | 2020-03-06 | 2023-05-01 | 廣達電腦股份有限公司 | Optical system of miniature head-mounted display |
| CN111474715A (en) * | 2020-04-23 | 2020-07-31 | 歌尔股份有限公司 | Optical system and augmented reality device |
| CN111766705A (en) * | 2020-06-19 | 2020-10-13 | 江西微瑞光学有限公司 | Short-distance and high-lens-birefringence-tolerance optical imaging module |
| CN111766706A (en) * | 2020-06-19 | 2020-10-13 | 江西微瑞光学有限公司 | Short-distance and high-lens-birefringence-tolerance optical imaging module |
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Effective date of registration: 20200401 Address after: 212002 No. 707 Changjiang Road, hi tech Zone, Zhenjiang, Jiangsu Patentee after: DEJIA INTELLIGENT PHOTOELECTRIC (ZHENJIANG) Co.,Ltd. Address before: 100081 Haidian science and technology building, 5 South Avenue, Beijing, Haidian District, 1302, Zhongguancun Patentee before: Beijing NED+AR Display Technology Co.,Ltd. |