CN110515212A - A kind of near-eye display system - Google Patents
A kind of near-eye display system Download PDFInfo
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- CN110515212A CN110515212A CN201910921643.2A CN201910921643A CN110515212A CN 110515212 A CN110515212 A CN 110515212A CN 201910921643 A CN201910921643 A CN 201910921643A CN 110515212 A CN110515212 A CN 110515212A
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- display system
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- eye display
- spectroscope
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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Abstract
The present invention provides a kind of near-eye display systems, including at least one reflection-type spectroscope not coaxial with user's optical axis, the spectroscope is fixed on the predetermined position of user at the moment, the reflectance coating of predetermined transflection ratio is coated with towards human eye side, it is greater than 15mm close to one end of user at a distance from user.Using nearly eye display device of the present invention, moulding is light, has good display effect, and can be adapted to the user of different diopters, has wide range of applications.
Description
Technical field
The present invention relates to augmented reality fields, particularly relate to a kind of near-eye display system.
Background technique
It is general with virtual reality (virtual reality, VR) and augmented reality (augmented reality, AR)
It has read since proposing, the market of the nearly eye display device based on VR AR mode also achieves significant progress.In many applications
In the hardware implementation mode of AR VR technology, head-mounted display (Helmet-Mounted Display, HMD) and nearly eye are aobvious
Show that device (Near-to-Eye Display, NED) is most effective and can bring optimum experience to user in the prior art
Implementation.
Near-eye display is a kind of head-mounted display that can be projected directly at image in viewer's eye.NED's is aobvious
Display screen is close less than the distance of distinct vision apart from human eye, and human eye can not directly differentiate picture material thereon, can by NED optical system
Image is amplified and is caused at a distance, on the retina of refocusing to human eye, seems picture seen by person except several meters, thus real
The display effect of existing AR, VR technology.
Because near-eye display needs to be worn on head part, small-sized and good display effect just seems especially
It is important.
Summary of the invention
In view of this, can adjust the main purpose of the present invention is to provide a kind of hinged portable display apparatus
The position of display device and easy to carry.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of nearly eye display device, including at least one reflection-type spectroscope not coaxial with user's optical axis, described point
Light microscopic is fixed on the predetermined position of user at the moment, and the reflectance coating of predetermined transflection ratio is coated with towards human eye side, close to make
One end of user is greater than 15mm at a distance from user.
Further, the spectroscope receives the image light from micro-display, the micro-display by LCD, OLED,
The mode of LCoS or MEMS scanning mirror is realized.
Further, the micro-display is the flexible displays that flexible displays, especially OLED or MEMS are realized,
Convex surface emits image light.
Further, the nearly eye display device further comprises lens group, reflecting mirror, wherein above spectroscope, by a left side
Reflecting mirror, lens group and micro-display are arranged in sequence with to the right side；Lens group includes at least a piece of lens, optical axis and micro-display
Optical axis shape is at a certain angle；Reflecting mirror is curved surface, forms conjugate relation with micro-display.
Further, the spectroscope towards human eye side be curved surface.
Further, the nearly eye display device further comprises that the image for issuing micro-display is embodied as curved picture
Relay lens.
Further, the curved picture be spectroscope inner surface to unlimited far object at ideal image.
Further, nearly eye display device further comprises the diffuser screen for increasing the transmission angle of the curved picture.
Further, the relay lens is microlens array, and the curvature of microlens array middle section is greater than upper area
With the curvature of lower area.
Further, which is characterized in that spectroscopical surfaces externally and internally is different, constitutes diopter to external environmental light, with
User's diopter matches.
Using near-eye display system of the present invention, reflected using image light of the reflecting mirror to micro-display, greatly
The volume for reducing display system greatly, amplifies image by lens group, improves display effect.In addition, further leading to
MEMS, relay lens, the diffuser screen crossed in near-eye display system form curved intermediary image, effectively improve aberration, further mention
Rise image quality.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one near-eye display system of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of one near-eye display system of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of two near-eye display system of the embodiment of the present invention；
Fig. 4 (a), Fig. 4 (b) are the structural schematic diagram of three near-eye display system of the embodiment of the present invention；
Fig. 5 (a) is the right view of three relay lens of the embodiment of the present invention；
Fig. 5 (b) is the main view of three relay lens of the embodiment of the present invention.
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
Whole 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, is all to belong to the scope of protection of the 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.
Near-eye display system of the invention includes micro-display, spectroscope；
Wherein, received image light is reflected, is amplified into human eye, together for issuing image light, spectroscope by micro-display
When, the environment light in external environment also enters human eye via spectroscope, achievees the effect that augmented reality is shown.Micro-display divides
Scheduled position and angle are formed between light microscopic and human eye, after being reflected with the image light of micro-display via spectroscope, all into
Entering human eye is advisable.
Embodiment one
The present invention provides a kind of near-eye display system, as shown in Figures 1 and 2, in preferred embodiment of the invention, nearly eye
The composition of display system specifically includes:
At least a piece of reflection-type spectroscope 102, inner surface is curved surface, towards human eye, thereon coated with predetermined transflection ratio
Reflectance coating, outer surface are curved surface, and the predetermined transflection ratio can be set as needed, to keep the image light intensity for reaching human eye suitable
In, it is preferred that image light penetration rate is 30%~50%；The curved surface can be free form surface, cylinder, aspherical, spherical surface etc.；
Spectroscope 102 is fixed on the predetermined position before human eye, and optical axis is not coaxial with human eye's visual axis, and the angular range of optical axis and the optical axis is
15 degree~45 degree, it is preferred that the angle is 25 degree, so that more image lights are reflected into human eye.
Micro-display 101 is disposed in proximity to the position of human eye, at an angle towards spectroscope 102, to spectroscope 102
Emit image light, the angle is set as needed, it is ensured that the image light of micro-display can be projected spectroscope 102.For reality
Existing small-sized, the micro-display 101 can select LCD, OLED and Lcos micro-display.Micro-display 101 can be flat
Face display, as shown in Figure 1；It is also possible to flexible displays as shown in Figure 2, convex surface emits image light, aobvious using curved surface
Show device, it can effective aberration correction, it is preferred that the curved surface of the flexible displays can be free form surface, spherical surface, aspheric
Face.
The image light that micro-display 101 issues partially is reflected into human eye, utilizes spectroscope 102 after spectroscope 102
Face type, curvature be amplified the image light of micro-display 101 throwing is remote, the image for the micro-display seen at human eye seem from
Several meters of remote distances are issued rather than are issued from immediating vicinity, and external environment light enters human eye through spectroscope, make human eye
The image light and environment light that image source issues can be seen simultaneously, reach the display effect of augmented reality.
Embodiment two:
Further embodiment of this invention is as shown in figure 3, in the top of spectroscope 304, along 302 optical axis direction of lens group, from a left side
Reflecting mirror 303, lens group 302, micro-display 301 are arranged in sequence with to the right side.
Micro-display 301 issues image light, after the amplification of lens group 302, is reflected to spectroscope 304 by reflecting mirror 303,
Then human eye is reflexed to by 304 part of spectroscope, external ambient light enters human eye also by spectroscope 304, and it is existing to reach enhancing
Real effect.
Specifically, the optical axis of lens group 302 and 301 optical axis shape of micro-display are at a certain angle, it is preferred that the angle
Less than 20 degree, also, the length of lens group 302 in the y-axis direction is equal to or more than micro-display 301, all micro- to receive
The image light that display 301 emits, further, the distance between micro-display 301 and lens group 302 are small as far as possible, from
And reduce the volume of near-eye display system, it is preferred that the distance is less than 10mm.Lens group 302 includes at least a piece of lens, right
The quantity of the lens, face type without limitation, as long as being able to achieve the effect amplified to image.In the embodiment of the present invention
Using a piece of convex lens as an example, the convex lens is spherical surface.
The face type of reflecting mirror 303 can be plane, or spherical surface, aspherical, free form surface etc., with spectroscope 304
Cooperation, can further aberration correction, reach preferable display effect.The position of reflecting mirror 303 and micro-display 301 is formed closely
Like infinite conjugate relationship.And blocking in order to avoid sight, reflecting mirror 303, lens group 302 and micro-display 301 will be in people
Other than the range of visibility of eye.
Spectroscope 304, inner surface are curved surface, towards human eye, are coated with the reflectance coating of certain splitting ratio thereon, outer surface is
Curved surface；The curved surface can be free form surface, cylinder, aspherical, spherical surface etc.；Spectroscope 304 is fixed on the pre-determined bit before human eye
It sets, so that image light is reflected into human eye.
Embodiment three
In the present embodiment, micro-display is MEMS (Micro Electromechanical Systems, micro-electro-mechanical systems
System) scanning mirror, near-eye display system further comprises spectroscope 404, relay lens 402, wherein 404 top of spectroscope, Cong Zuozhi
The right side is arranged in sequence with relay lens 402 and MEMS scanning mirror 401.
Specifically, MEMS scanning mirror 401 generates picture signal by way of progressive scan as shown in Fig. 4 (a), 4 (b),
It is projected to relay lens 402, forms curved picture after relay lens 402, can effectively improve aberration, the shape in human eye in this way
At clearly image, the curved picture and spectroscope 404 are identical to ideal image formed by unlimited far object.In the present embodiment
In, relay lens 402 is realized by the way of microlens array, it will be appreciated by those skilled in the art that the realization of relay lens 402 is not
It is limited to this mode, as long as being capable of forming the relay lens 402 for improving the curved picture of aberration in protection scope of the present invention
Within.Microlens array such as Fig. 5 (a) in this implementation, shown in 5 (b), it can be divided into different regions, divided in the present embodiment
Division proportion for three parts, upper area A1, middle section A2, lower area A3, three parts can be as needed
Setting.The curvature in each region is different, and wherein the curvature of middle section A2 is greater than the curvature of upper area A1 and lower area A2.
Image light passes through microlens array, and transmission angle becomes smaller, and when being transmitted to spectroscope 404, effect can be poor, preferably
, the near-eye display system in this implementation further comprises being located at same level direction with relay lens 402, and be located at relay lens
The diffuser screen 403 in 402 left sides, the diffuser screen 403 receive the image light of relay lens transmitting at a certain angle；The angle can be with
It is set as needed, diffuser screen 403 is matched with spectroscope 404, by the image light of received relay lens 402, is transferred to light splitting
Mirror 404.
Diffuser screen 403 increases the transmission of described image light for the image light of received microlens array to be scattered
Angle, to ensure that image light reaches spectroscope 404 with preferable display effect, optionally, diffuser screen 304 can be ground glass.
Spectroscope 404, inner surface are curved surface, towards human eye, are coated with the reflectance coating of certain splitting ratio thereon, outer surface is
Curved surface；The curved surface can be free form surface, cylinder, aspherical, spherical surface etc.；Spectroscope 404 is fixed on the pre-determined bit before human eye
It sets.
Embodiment one can adjust the transflection of spectroscope inner surface reflectance coating into embodiment three according to micro-display
Than keeping the light luminance into human eye moderate；Antireflection material can also be coated on spectroscopical outer surface to reduce dazzle.
The setting of inner surface certain distance is removed along its primary optical axis in spectroscopical outer surface, which is spectroscopical thickness.Further,
When the thickness distribution is uneven, that is, when spectroscope surfaces externally and internally difference, the user with diopter problem can be supplied to.
For example, some optical treatments for aiming at visual impairment user configuration glasses can be carried out to spectroscopical outer surface, to make thickness
Degree changes, and optimizes to spectroscopical inner surface, eliminates the distortion and deformation that may cause after optical treatment, guarantees
The picture quality that user is watched by the display system.
To sum up, technical solution of the present invention provides the near-eye display system design of a kind of application and AR or VR technology, nearly
Eye display system is designed to more compact structure, and at the same time realizing biggish field angle (more than 55 degree).The nearly eye is aobvious
Show that all optical elements of system can be installed on HMD or NED equipment by mechanical installation seat, makes the mechanical erection of whole system
It is easier with packaging.
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 etc.
Change with replacement and obviously obtained scheme, should all be included within protection scope of the present invention.
Claims (10)
1. a kind of near-eye display system, which is characterized in that be divided including at least one with the not coaxial reflection-type of user's optical axis
Mirror, the spectroscope are fixed on the predetermined position of user at the moment, and the reflectance coating of predetermined transflection ratio is coated with towards human eye side,
It is greater than 15mm close to one end of user at a distance from user.
2. near-eye display system according to claim 1, which is characterized in that the spectroscope is received from micro-display
Image light, the micro-display are realized by way of LCD, OLED, Lcos or MEMS scanning mirror.
3. near-eye display system according to claim 2, which is characterized in that the micro-display is flexible displays,
Convex surface emits image light.
4. near-eye display system according to claim 2, which is characterized in that the nearly eye display device further comprises
Microscope group, reflecting mirror, wherein above spectroscope, be arranged in sequence with reflecting mirror, lens group and micro-display from left to right；
Lens group includes at least a piece of lens, and optical axis and micro-display optical axis shape are at a certain angle；
Reflecting mirror is curved surface, forms conjugate relation with micro-display.
5. near-eye display system according to claim 4, which is characterized in that the spectroscope towards human eye side be curved surface.
6. near-eye display system according to claim 2, which is characterized in that the near-eye display system further comprise by
The image that micro-display issues is embodied as the relay lens of curved picture.
7. near-eye display system according to claim 6, which is characterized in that the curved picture is spectroscope inner surface pair
Unlimited far object at ideal image.
8. near-eye display system according to claim 7, which is characterized in that near-eye display system further comprises will be described
The diffuser screen that the transmission angle of curved picture increases.
9. near-eye display system according to claim 8, which is characterized in that the relay lens is microlens array, micro-
The curvature of lens array middle section is greater than the curvature of upper area and lower area.
10. near-eye display system according to any one of claims 1 to 9, which is characterized in that spectroscopical surfaces externally and internally
Difference constitutes diopter to external environmental light, matches with user's diopter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910921643.2A CN110515212B (en) | 2019-09-27 | 2019-09-27 | Near-to-eye display system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910921643.2A CN110515212B (en) | 2019-09-27 | 2019-09-27 | Near-to-eye display system |
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| CN110515212A true CN110515212A (en) | 2019-11-29 |
| CN110515212B CN110515212B (en) | 2021-12-14 |
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| CN113655616A (en) * | 2021-06-01 | 2021-11-16 | 李湘裔 | Reflective spectral imaging system for near-eye display |
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| Publication number | Publication date |
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| CN110515212B (en) | 2021-12-14 |
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