CN109425985A - A kind of near-eye display system and near-eye display - Google Patents
A kind of near-eye display system and near-eye display Download PDFInfo
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- G02B27/01—Head-up displays
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- G—PHYSICS
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Abstract
The invention discloses a kind of near-eye display system and near-eye displays, belong to augmented reality technical field of imaging；Near-eye display system includes curved element, it include at least one curved surface in curved element, the eyes of the inner surface of curved surface towards user are arranged, and the distance setting of one thickness of inner surface is removed along primary optical axis in the outer surface of curved surface, and inner surface is coated with light fractional transmission part reflecting material；Imaging device is disposed in proximity to the position of the eyes of user；Imaging device further comprises light source and miniscope, and light source is for irradiating miniscope, in eyes of the light beam that miniscope issues via the laggard access customer of camber reflection in curved element；Curved surface is also used to for external light being transmitted through in the eyes of user.The beneficial effect of above-mentioned technical proposal is: can keep the structure of compact and portable while promoting the field angle of near-eye display device, promote the viewing experience and aesthetics of user, reduce the process complexity and manufacturing cost of display equipment.
Description
Technical field
The present invention relates to augmented reality technical field of imaging more particularly to a kind of near-eye display systems and near-eye display.
Background technique
Portable device with the development of augmented reality (Augmented Reality, AR) technology, applied to AR technology
It is also being increased rapidly with the market of wearable device.In many hardware implementation modes using AR technology, head-mounted display
(Helmet-Mounted Display, HMD) and near-eye display (Near-to-Eye Display, NED) be it is most effective and
The implementation of optimum experience can be brought to user in the prior art.
So-called head-mounted display (HMD), because its shape is similar to glasses, and is referred to alternatively as glasses type displayer or video
Glasses can send optical signalling to eyes by various head-mounted display apparatus, to realize that the difference in AR technology is aobvious
Show effect.
So-called near-eye display (NED) is that the wear-type that image can be projected directly in viewer's eye by one kind is shown
Device (HMD).For eyeball of the display screen of NED apart from people within 10 centimetres, so close image is usually nothing for human eye
What method was seen clearly, but the retina of human eye can be focused an image to by designing specific lens array in NED optical system
On, it is processed using visual system, so as to show the image of virtual large format before user, thus may be used
To realize the various different display effects of AR technology.
The size of near-eye display in the prior art, field angle (Field of View, FOV) determines nearly eye
The field range size of display, generally, field angle is bigger, and field range is bigger.And in near-eye display, field angle
Promotion be usually associated with the increase of hardware device complexity so that entire near-eye display is heavier, to weaken user's body
Test comfort.
Summary of the invention
According to the above-mentioned problems in the prior art, the technology of a kind of near-eye display system and near-eye display is now provided
Scheme, it is intended to keep the light comfort level of equipment while promoting the visual field of near-eye display device, while reduce entire display and setting
Standby process complexity.
Above-mentioned technical proposal specifically includes:
A kind of near-eye display system, wherein include:
Curved element, includes at least one curved surface in the curved element, the eye of the inner surface of the curved surface towards user
The outer surface of eyeball setting, the curved surface is arranged along one pre-determined distance of key light axis direction offset internal surface, and the inner surface is coated with
Light fractional transmission part reflecting material；
Imaging device is disposed in proximity to the position of the eyes of the user；
The imaging device further comprises light source and miniscope, and the light source is for irradiating the miniature display
Device, the light beam that the light source issues after the camber reflection in the curved element via entering in the eyes of the user；
The curved surface is used to for external light being transmitted through in the eyes of the user.
Preferably, the near-eye display system, wherein the curved surface of the curved element forms a free form surface form,
Relationship of the free form surface form between the coordinate (x, y, z) in XYZ coordinate system handles to obtain according to following multinomials:
Wherein,
Z is used to indicate the numerical value of the free form surface form；
C is for indicating the curvature；
K is circular cone coefficient；
N is used to indicate the number of coefficients in the multinomial.
Preferably, near-eye display system, wherein include a curved surface in the curved element；
The miniscope in the imaging device is active miniscope, and the light source is included in described
In miniscope；
The miniscope contradicts the forehead in the user by isolated material, and between the forehead of the user
In one first predetermined angle, the display surface of the miniscope is arranged towards the curved element；
One mechanical installation seat is set between the miniscope and the curved surface, for fixing the miniscope
With the relative position of the curved surface.
Preferably, near-eye display system, wherein the thickness of the curved surface is in xy coordinate space uneven distribution.
Preferably, near-eye display system, wherein include a curved surface in the curved element；
The miniscope in the imaging device is passive type miniscope；
The light source is set to the front of the eyes of the user；
The miniscope is perpendicular to the light source and is set to the top of the light source, the miniscope it is aobvious
Show facing towards the curved element and is arranged；
One polarizing beam splitter is set between the light source and the miniscope.
Preferably, near-eye display system, wherein include the institute of multiple sequentials from top to bottom in the curved element
Curved surface is stated, is touched from beginning to end between multiple curved surfaces；
The miniscope in the imaging device is active miniscope, and the light source is included in described
In miniscope；
The miniscope contradicts the forehead in the user by isolated material, and between the forehead of the user
In one first predetermined angle, the display surface of the miniscope is arranged towards the curved element；
One mechanical installation seat is set between the miniscope and the curved surface, for fixing the miniscope
With the relative position of the curved surface.
Preferably, near-eye display system, wherein include a curved surface in the curved element；
The miniscope in the imaging device is active miniscope, and the light source is included in described
In miniscope；
The miniscope contradicts the forehead in the user by isolated material, and between the forehead of the user
In one first predetermined angle, the display surface of the miniscope is arranged towards the curved element；
One mechanical installation seat is set between the miniscope and the curved surface, for fixing the miniscope
With the relative position of the curved surface；
Polarization selectivity polymer film is coated in the inner surface of the curved surface；
A polarizer is inserted between the miniscope and the curved element, the polarizer is parallel to described micro-
Escope setting；
The polarizer is used to the non-polarized light that the light source issues being converted into polarised light.
Preferably, near-eye display system, wherein include a curved surface in the curved element；
The miniscope in the imaging device is active miniscope, and the light source is included in described
In miniscope；
One end of the miniscope contradicts on the curved surface, and the other end is fixed by a mechanical installation seat, so that
Eyes of the display surface of the miniscope towards the user；
In placing a reflecting mirror on the forehead of the user, the reflecting mirror is fixed by the mechanical installation seat, and with
It is in one second predetermined angle between the forehead of the user, the reflecting mirror is used for the light source in the miniscope
The light of sending is reflected on the inner surface of the curved surface.
A kind of near-eye display, wherein an above-mentioned near-eye display system is respectively arranged in each eye of the corresponding user；
The miniscope in each near-eye display system be separately positioned on corresponding eyes outside or
Top.
Preferably, near-eye display, wherein the miniscope in two near-eye display systems is integrated
In a display device；
The display device is located at the top of two eye centers of the user.
The beneficial effect of above-mentioned technical proposal is: providing a kind of near-eye display system, can expand near-eye display device
Field angle (reaching 50 degree or more) while keep the compact and portable of entire display structure, so as to improve light propagation efficiency from
And energy consumption is saved, the process complexity and manufacturing cost of display equipment are reduced, expands what AR eyeglass industry was designed beautifully comprehensively
Space improves the comfort level and usage experience of user's wearing.
Detailed description of the invention
Fig. 1 is the general structure schematic diagram of near-eye display system in preferred embodiment of the invention；
Fig. 2-7 is the structural schematic diagram of near-eye display system in different embodiments of the invention；
Fig. 8-10 is that the nearly eye of user's binocular vision is constituted using near-eye display system in different embodiments of the invention
The structural schematic diagram of display.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
According to the above-mentioned problems in the prior art, a kind of technical solution of near-eye display system is now provided, the technology
Scheme is used in AR technology it is particularly applicable in HMD device or NED equipment.
Then as shown in fig. 1, in preferred embodiment of the invention, the general structure of above-mentioned near-eye display system constitutes tool
Body includes:
Curved element, includes at least one curved surface 11 in curved element, the eyes of the inner surface 11a of curved surface 11 towards user
12 settings, the outer surface 11b of curved surface along primary optical axis removes inner surface 11a mono-, and apart from setting, (distance is free form surface form
Thickness), concave surface 11a is coated with specific reflection/transmittance light transflector material, and convex surface 11b is not coated with any material；
Imaging device 2 is disposed in proximity to the position of the eyes 12 of user；
Above-mentioned imaging device 2 further comprises light source and miniscope (the mutual pass between light source and miniscope
Tying up to can hereinafter be described in detail), light source is for irradiating miniscope, and the light beam that light source issues is via the song in curved element
Face 11 is reflected in the eyes 12 of laggard access customer；
Curved surface 11 is also used to for external light being transmitted through in the eyes 12 of user.
Specifically, in the present embodiment, above-mentioned near-eye display system designed for passing through the collection of multiple optical components
At arrangements lifting HMD device or the field angle (FOV) and eye movement frame (Eye Movement Box, EMB) of NED equipment.
At least one curved surface 11 (being a curved surface 11 in Fig. 1) in structure as shown in Figure 1, in above-mentioned curved element
For the curved surface of free form, also referred to as free form surface form, the free form of the free form surface form may include annular
(toroid), other than ring type or biconial (atoroid/biconic), non-cylindrical (acylinder), off-axis parabolic
Several forms such as (off-axis parabola), gradation type (anamorph) and multinomial, the virtual graph generated using AR technology
The display content of picture is passed on the inner surface 11a of free form surface form, and 13 in Fig. 1 are the front view of the curved surface 11.It should
Inner surface 11a in curved surface 11 is a part of transmissive portion reflecting surface, by the curvature of preset free form surface form,
The free form surface form by 3 collimated reflected of light beam issued in Fig. 1 by imaging device 2 to infinity, to create directional light
Beam 4, to simulate the light of the generation of the real-world object in true environment, in other words, free form surface form can be reflected from imaging
The light of device 2, and by the eyes of the light transmission from external environment to user, thus can by the light of " virtual " and
The light of " reality ", which combines, to be transmitted in the eyes of user, is created that the user's body for being more nearly " augmented reality " of display
It tests.In the present embodiment, the ratio between above-mentioned reflected light and transmitted light is applied by the polymer for being coated in the inner surface 11a of curved surface 11
Layer determines.Specifically, can also on inner surface 11a coated polymer film, and on the 11b of outer surface coat antireflection material
Material is to reduce dazzle.
In the present embodiment, for the light source in above-mentioned imaging device 2 for irradiating miniscope, which can be LED light
Source, laser or other kinds of luminaire.In order to realize the display effect of full color, need using comprising red, green
Miniscope is irradiated with the combination of light sources of three light sources composition of blue.
In the present embodiment, for miniscope such as Organic Light Emitting Diode (the Organic Light- of active type
Emitting Diode, OLED) display, light source can integrate in the inside of miniscope, i.e. miniscope itself
With luminaire, additional external light source is not needed.But what is used in some traditional NED is usually passive miniature aobvious
Show device, needs to achieve the purpose that imaging by introducing external light source irradiation miniscope at this time.
In preferred embodiment of the invention, seat of the free form surface form that above-mentioned curved surface 11 is formed in XYZ coordinate system
Relationship between mark (x, y, z) handles to obtain according to following multinomials:
Wherein,
Z is used to indicate the numerical value of free form surface form；
C is for indicating curvature；
K is circular cone coefficient；
N is for the number of coefficients in representative polynomial.
Specifically, in the present embodiment, pass of the above-mentioned free form surface form between the coordinate (x, y, z) of its XYZ coordinate axis
System is as shown in above-mentioned multinomial (1), and wherein x and y is respectively the coordinate (x, y) of XOY coordinate system where free form surface form, and z is
Perpendicular to the coordinate in the reference axis in free form surface form direction.Specifically, the origin that above-mentioned XOY coordinate rises sets for optics
Primary optical axis passes through a bit for the free form surface form that curved surface 11 is formed in meter, and position is depending on specific different designs.
In above-mentioned multinomial (1), AiIt is the coefficient of i-th of extension Polynomial Terms, which is the power level of x and y
Number, wherein first item is x, and Section 2 is y, is then followed successively by x*x, x*y, y*y etc..The polynomial order for having 2 is 1,3
Order be 2,4 order be 3, and so on.Above-mentioned coordinate value x and y is divided by normalization radius, therefore above-mentioned multinomial
(1) coefficient in is nondimensional.
Each coefficient in above-mentioned multinomial (1) is by optimization, so that outgoing beam collimates and reaches difference range
Interior maximum field of view angle.And the thickness of free form surface form is consistent in xy reference axis physical space, and optimization makes as far as possible
The part has the smallest curvature so that the appearance of eyepiece is as normal as possible.
Embodiment one:
It as shown in Figure 2, include a curved surface 11 in above-mentioned curved element；
Miniscope 21 in imaging device 2 is active miniscope, and light source is included in miniscope 21
In；
Then miniscope 21 contradicts the forehead 22 in user by isolated material, and is in one between the forehead of user 22
The display surface of first predetermined angle α, miniscope 21 are arranged towards curved element；
One mechanical installation seat 23 is set between miniscope 21 and curved surface 11, for fixing miniscope 21 and song
The relative position in face 11.
Specifically, in the present embodiment, above-mentioned miniscope 21 is the display such as OLED display of active type, because
Luminaire is come in this miniscope 21 as light source, such design separately adds additional light without showing in equipment
Source, so that the entirely more compact structure of display equipment.
In the present embodiment, miniscope 21 is resisted against the forehead of user by some sealings at the back side and the material of isolation
It is positioned on 22, and forms one first predetermined angle α between the miniscope 21 and the forehead 22 of user.Lead to simultaneously
A mechanical installation seat 23 connection miniscope 21 and curved surface 11 are crossed, it is both above-mentioned with fixation.
In the present embodiment, under above-mentioned first predetermined angle α is required according to specific implementation form, the different field angles of curved surface 11
Optimum results and many factors such as height of miniscope determine.
Near-eye display system in the present embodiment is applied in near-eye display device, be easy wearing and equipment it is more tight
Under the premise of gathering, field angle still is able to more than 50 degree, and eye movement frame size can achieve 8mm*8mm.And this is freely bent
The manufacturing process of face form is also very convenient, and the plastic material of refractive index 1.3-1.9 by diamond turning or is molded into
Type.Therefore the design of the near-eye display system in technical solution of the present invention is more suitable for producing in enormous quantities, and cost is also more traditional close
Eye display or head-mounted display are lower.
Embodiment two:
As shown in figure 3, on the basis of the above embodiment 1, the thickness of above-mentioned curved surface 11 can be in xy coordinate space not
Be uniformly distributed, i.e. outer surface 11b takes the free form surface form different from inner surface 11a, be specially supplied to have myopia or
The user of the visual impairments such as person's long sight.For example, in order to make near-eye display system more suitable for the user of visual impairment, it can be upper
The polymer that semi-transparent reflection is coated on the inner surface 11a of curved surface 11 is stated, to be responsible for collimation and group light combination, and in above-mentioned curved surface 11
Outer surface 11b on carry out some optical treatments for aiming at visual impairment user configuration glasses so that the thickness of curved surface 11
The above variation occurs.After carrying out optical treatment, need to carry out the inner surface 11a of above-mentioned curved surface 11 again excellent
Change, to eliminate the distortion and deformation that carry out may cause after optical treatment, guarantees that user is observed by the near-eye display system
Picture quality.
Embodiment three:
As shown in figure 4, including a curved surface 11 in above-mentioned curved element；
Miniscope 21 in imaging device 2 is passive type miniscope；
Light source is set to the front of the eyes 12 of user；
Miniscope 21 is perpendicular to light source 45 and is set to the top of light source, 41 direction of display surface of miniscope 21
Curved surface 11 in curved element is arranged；
One polarizing beam splitter 42 is set between light source and miniscope 21.
Specifically, in the present embodiment, above-mentioned miniscope 21 is the miniscope of passive type, such as liquid crystal display
(Liquid Crystal Display, LCD) or Liquiid crystal on silicon (lcos) display (Liquid Crystal on Silicon,
) or Digital Micromirror Device (Digital Mirror Device, DMD) or MEMS (Micro- LCOS
Electromechanical Systems, MEMS) scanner or driving fibre bundle (actuated fiber bundle)
Deng.Due to the display that above-mentioned miniscope 21 is passive type, inside not automatic light source, it is therefore desirable to additional addition one
External light source is irradiated it, and the light source of the outside is as mentioned above it is possible, can be LED, laser or other types of
Luminaire, if the forms such as the combination of light sources including RGB three-color light source can also be formed for the needs of full-color EL display effect.
In the present embodiment, a polarizing beam splitter 42 (PBS), the polarization point are also set up between light source and miniscope 21
The plane of incidence 44 of light device 42 is towards the exit facet of light source, and the one of the adjacent above-mentioned plane of incidence 44 of polarizing beam splitter 42 is facing towards miniature aobvious
The display surface 41 for showing device 21 has a polarization light-dividing surface 43 and the plane of incidence 44 into 45 degree of angles in the inside of polarizing beam splitter 42,
The light splitting surface 43 is arranged to reflect a type of polarised light and transmits another type of polarised light, such as is arranged to anti-
Penetrate S polarized light and transmitting P-type polarisation light.Then when the polarization S light from light source is by 43 quilt of Amici prism in polarizing beam splitter 42
Reflection, reflected light of the optical path after reflection/transmission several times carry the display content from miniscope 21, and
Its polarised light is changed type (such as being converted into P light by S light), to penetrate Amici prism 43 and to be not reflected, the transmitted light
It reaches curved surface 11 and is focused onto infinite point and is reflected in the eyes 12 of user, so that user observes miniature aobvious
Show the display content for being imaged and showing on the display surface 41 of device 21.
Example IV:
In the application of common HMD and NED, more it is important that increasing the field angle of display equipment.However as view
The increase of rink corner, the curved surface in curved element are just requested to have bigger curvature, this allows for the eyepiece in display equipment
Appearance is more unnatural, shows a kind of shape for being similar to " insect eye ".
It in order to solve this problem, include more in curved element as shown in figure 5, on the basis of above-described embodiment two
The curved surface 11 of a sequential from top to bottom is touched from beginning to end between multiple curved surfaces 11, the cascade formed by using multiple curved surfaces
Array, each small curved surface can increase curvature to optimize the local optical power of corresponding light beam, so as to promote whole view
Rink corner, and do not interfere with the appearance of eyepiece.
Other in the present embodiment are constituted described in equal similar embodiment two, such as the miniscope in imaging device 2
21 be active miniscope, and light source is included in miniscope；
Miniscope 21 contradicts the forehead 22 in user by isolated material, and in one the between the forehead of user 22
The display surface of one predetermined angle α, miniscope 21 are arranged towards curved element；
One mechanical installation seat 23 is set between miniscope 21 and curved surface 11, for fixing miniscope and curved surface
Relative position.
Embodiment five:
Near-eye display system in above-described embodiment two, one of defect are that curved surface 11 is partially reflecting miniature display
When the display content of device 21, it is possible to display content can be partially transmitted in external environment, to will show that content part is sudden and violent
Reveal to other users, and since curved surface is needed inside external environment light transmission to near-eye display system, the above problem
So that the viewing privacy of user is unable to get guarantee.
In this case, in the present embodiment, as shown in fig. 6, the inner surface 11a coating polarization selectivity in curved surface 11 is poly-
Compound film 61, the polarization selectivity polymer film 61 can a kind of fully reflective polarised light (for example can be designed as S light or P
Light total reflection) and without transmission, while a polarizer 62 being arranged in the curved surface in miniscope 21 and curved element
Between 11, specifically it is arranged in front of miniscope 21, which can be linear optics polarizer or circular polarization
The polarizer of device or other suitable types.By taking linear polarization as an example, which can be issued miniscope 21
Non-polarized light be converted into polarised light, which is reflected by the inner surface 11a of curved surface 11 completely, therefore user is observed that
The 50% of illumination light, this 50% loss come from polarizer, in this way can to avoid by light loss on curved surface 11.Therefore this implementation
It is scarce that near-eye display system in example eliminates display content while being capable of providing the identical optical efficiency of the embodiment with before
The problem of weary privacy, has ensured the privacy of user.
Embodiment six:
The present embodiment be on the basis of example 2 be solves the problems, such as privacy of user realization another way.In this reality
It applies in example, includes a curved surface 11 in curved element as shown in Figure 7；
Miniscope 21 in imaging device 2 is active miniscope, and light source is included in miniscope 21
In；
One end of miniscope 21 contradicts on curved surface 11, and the other end is fixed by a mechanical installation seat 23, so that micro-
Eyes of the display surface of escope 21 towards user；
In placing a reflecting mirror 71 on the forehead 22 of user, reflecting mirror 71 is same by 23 fixations of mechanical erection, and with
It is in one second predetermined angle β between the forehead 22 of user, reflecting mirror 71 is used for the light for issuing the light source in miniscope 21
It is reflected on curved surface 11.
In the present embodiment, above-mentioned second predetermined angle β also needs the specific implementation form according to curved surface 11, different visual fields
The many factors such as the height of optimum results and miniscope under the requirement of angle determine.
Specifically, in the present embodiment, the light from miniscope 21 can be reflected into curved surface by the setting of reflecting mirror 71
On 11, and reflecting mirror is tilted with the second predetermined angle β, can be collected and be reflected from miniscope with highest light efficiency
The light of 21 transmittings.Such structure can equally leak into external environment to avoid display content and be known by other users, from
And it ensure that the viewing privacy of user.
Above-described embodiment one to six is the optical texture for realizing the near-eye display system of monocular vision production of user.?
In following embodiments, in order to realize for eyes observation display, need to the near-eye display system in above-described embodiment into
Row improves, specifically:
Embodiment seven:
As shown in Figure 8, a pair of near-eye display for applying family binocular vision of setting, in the near-eye display, to application
A near-eye display system is respectively arranged in each eye at family；
Miniscope 21 in each near-eye display system is separately positioned on the outside of corresponding eyes 12 (in such as Fig. 8
It is shown) or top (as shown in Figure 9).
Specifically, in the present embodiment, it includes micro- in imaging device 2 for including one in above-mentioned each near-eye display system
Escope 21 and include curved surface 11 in curved element, remaining construction is referred to above-described embodiment one to six and root
It is configured according to actual conditions.
In the present embodiment, the light beam issued from miniscope 21 illuminates the curved surface 11 in 12 front of each eye, each
Curved surface 11 is collimated and is reflected to light respectively, and the light in the light and external environment of virtual image is combined, finally
It is respectively transmitted to show in the eyes of user, allows a user to enough eyes and observe display content in near-eye display.
In the present embodiment, above-mentioned two miniscope 21 can be located at the side of the eyes of user (such as institute in Fig. 8 simultaneously
Show), the top (as shown in Figure 9) of the eyes of user, display shown by two miniscopes 21 can also be located at simultaneously
Content can be identical or different, and the three-dimensional imaging view of user's binocular vision is created with this.
In the present embodiment, when the display content of two miniscopes 21 is identical, need according to two eyes of user
The related informations such as the interpupillary distance of eyeball and eye movement frame adjust the distance between two curved surfaces 11, avoiding two display images not complete
Full alignment for example generates dizziness etc. to user's bring viewing obstacle, to promote the viewing experience of user.
Embodiment eight:
In order to further solve to give user's bring viewing barrier because the display image of two miniscopes is not perfectly aligned
Hinder and for example lead to the problem of dizziness, in the present embodiment, the miniscope in two near-eye display systems is integrated into one
In display device 101 (as shown in Figure 10), i.e. the public display device 101 of two near-eye display systems, and can be
Some additional optical elements are added between display device 101 and curved surface 11, by photodegradation and are directed on two curved surfaces 11,
To realize the binocular vision experience of user.
To sum up, technical solution of the present invention provides a kind of nearly eye applied to HMD device in AR technology and NED equipment and shows
Near-eye display system, is designed to more compact structure, and at the same time realizing biggish field angle (more than 50 by system design
Degree), and eye movement frame is greater than 8mm*8mm, so that the viewing experience of user is more preferably.All light in the near-eye display system simultaneously
Learning component can be installed in mechanical installation seat, so that the mechanical erection of whole system and packaging are easier, structure is fixed
It is more firm, therefore the near-eye display system in technical solution of the present invention can be used in the projection or imaging system of batch production
In, the complexity of technique is reduced while guaranteeing image quality and user's viewing experience, and reduce manufacturing cost.
The foregoing is merely preferred embodiments of the present invention, are not intended to limit embodiments of the present invention and protection model
It encloses, to those skilled in the art, should can appreciate that all with made by description of the invention and diagramatic content
Equivalent replacement and obviously change obtained scheme, should all be included within the scope of the present invention.
Claims (10)
1. a kind of near-eye display system characterized by comprising
Curved element, includes at least one curved surface in the curved element, and the eyes of inner surface towards the user of the curved surface are set
It sets, the outer surface of the curved surface is arranged along one thickness of key light axis direction offset internal surface distance, and the inner surface is coated with light portion
Divide transmissive portion reflecting material；
Imaging device is disposed in proximity to the position of the eyes of the user；
The imaging device further comprises light source and miniscope, and the light source is for irradiating the miniscope, institute
State light source sending light beam via after the camber reflection in the curved element enter the user eyes in；
The curved surface is used to for external light being transmitted through in the eyes of the user.
2. near-eye display system as described in claim 1, which is characterized in that the curved surface is formed by a free form surface form,
Relationship of the free form surface form between the coordinate (x, y, z) in XYZ coordinate system handles to obtain according to following multinomials:
Wherein,
Z is used to indicate the numerical value of the free form surface form；
C is for indicating the curvature；
K is circular cone coefficient；
N is used to indicate the number of coefficients in the multinomial.
3. near-eye display system as described in claim 1, which is characterized in that include a curved surface in the curved element；
The miniscope in the imaging device is active miniscope, and the light source is included in described miniature
In display；
The miniscope contradicts the forehead in the user by isolated material, and is in one between the forehead of the user
The display surface of first predetermined angle, the miniscope is arranged towards the curved element；
One mechanical installation seat is set between the miniscope and the curved surface, for fixing the miniscope and institute
State the relative position of curved surface.
4. near-eye display system as claimed in claim 3, which is characterized in that the free form surface of the inner surface of the curved surface
Form and the free form surface form of the outer surface of the curved surface are inconsistent, so that the thickness of the curved surface is in xy coordinate
Space uneven distribution.
5. near-eye display system as described in claim 1, which is characterized in that include a curved surface in the curved element；
The miniscope in the imaging device is passive type miniscope；
The light source is set to the front of the eyes of the user；
The miniscope is perpendicular to the light source and is set to the top of the light source, the display surface of the miniscope
It is arranged towards the curved element；
One polarizing beam splitter is set between the light source and the miniscope.
6. near-eye display system as described in claim 1, which is characterized in that in the curved element include it is multiple from top to bottom
The curved surface of sequential is touched from beginning to end between multiple curved surfaces；
The miniscope in the imaging device is active miniscope, and the light source is included in described miniature
In display；
The miniscope contradicts the forehead in the user by isolated material, and is in one between the forehead of the user
The display surface of first predetermined angle, the miniscope is arranged towards the curved element；
One mechanical installation seat is set between the miniscope and the curved surface, for fixing the miniscope and institute
State the relative position of curved surface.
7. near-eye display system as described in claim 1, which is characterized in that include a curved surface in the curved element；
The miniscope in the imaging device is active miniscope, and the light source is included in described miniature
In display；
The miniscope contradicts the forehead in the user by isolated material, and is in one between the forehead of the user
The display surface of first predetermined angle, the miniscope is arranged towards the curved element；
One mechanical installation seat is set between the miniscope and the curved surface, for fixing the miniscope and institute
State the relative position of curved surface；
Polarization selectivity polymer film is coated in the inner surface of the curved surface；
A polarizer is inserted between the miniscope and the curved element, the polarizer is parallel to described miniature aobvious
Show that device is arranged；
The polarizer is used to the non-polarized light that the light source issues being converted into polarised light.
8. near-eye display system as described in claim 1, which is characterized in that include a curved surface in the curved element；
The miniscope in the imaging device is active miniscope, and the light source is included in described miniature
In display；
One end of the miniscope contradicts on the curved surface, and the other end is fixed by a mechanical installation seat, so that described
Eyes of the display surface of miniscope towards the user；
In placing a reflecting mirror on the forehead of the user, the reflecting mirror is fixed by the mechanical installation seat, and with it is described
It is in one second predetermined angle between the forehead of user, the reflecting mirror is used to issue the light source in the miniscope
Light be reflected on the inner surface of the curved surface.
9. a kind of near-eye display, which is characterized in that each eye of the corresponding user is respectively arranged just like in claim 1-8
Near-eye display system described in any one；
The miniscope in each near-eye display system is separately positioned on the outside or top of corresponding eyes.
10. near-eye display as described in claim 1, which is characterized in that described micro- in two near-eye display systems
Escope is integrated in a display device；
The display device is located at the top of two eye centers of the user.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710762925.3A CN109425985B (en) | 2017-08-30 | 2017-08-30 | Near-eye display system and near-eye display |
| PCT/CN2018/100674 WO2019042133A1 (en) | 2017-08-30 | 2018-08-15 | Near-eye display system and near-eye display device |
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| CN201710762925.3A CN109425985B (en) | 2017-08-30 | 2017-08-30 | Near-eye display system and near-eye display |
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| CN109425985B CN109425985B (en) | 2020-08-28 |
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| WO2019042133A1 (en) | 2019-03-07 |
| CN109425985B (en) | 2020-08-28 |
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