CN110146983A - A kind of head-wearing display device - Google Patents
A kind of head-wearing display device Download PDFInfo
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- CN110146983A CN110146983A CN201811633637.9A CN201811633637A CN110146983A CN 110146983 A CN110146983 A CN 110146983A CN 201811633637 A CN201811633637 A CN 201811633637A CN 110146983 A CN110146983 A CN 110146983A
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- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000007 visual effect Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 210000001747 pupil Anatomy 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 210000001508 eye Anatomy 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 230000003190 augmentative effect Effects 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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Classifications
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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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
The present invention discloses a kind of head-wearing display device.Head-wearing display device includes: micro-display, lens, planar waveguide, total reflection mirror and triangle microstructured layers.The present invention is provided with triangle microstructured layers on planar waveguide, with it is traditional by a large amount of small prisms fittings are fixed form the technical solution of waveguide compared with, display device manufacturing process provided by the invention is simple, and difficulty of processing is small, is convenient for mass production.Simultaneously, the present invention adjusts optical path by adding triangle micro-structure on planar waveguide surface, so that head-mounted display apparatus provided by the invention has the advantages that miniaturization, lightness, field angle is big, emergent pupil visual field is uniform, brightness of image is high, easy to use, at low cost, applied widely.
Description
Technical field
The present invention relates to field of display devices, more particularly to a kind of head-wearing display device.
Background technique
In recent years, with the economic fast development with science and technology, construct virtual reality system and augmented reality system by
Step becomes social hotspots research topic.Augmented reality is a kind of by the new of real world information and virtual world information integration
Technology, it can bring many conveniences in daily life, realize the visual experience for surmounting electronic curtain, using will be true
The method that the real world is complementary to one another and is superimposed with the information of digital world, so that the information of the information of real world and virtual world
It is able to show and be clearly presented on simultaneously in user's eye.Head-mounted display be then augmented reality system critical component it
One.Wearing display system is a kind of visual optical system that image information or data information can be projected directly to eyes of user
System, it is initially to be present in Military Application aspect more, in recent years along with the continuous expansion of head-mounted display application field, Yi Jixin
Technology, new material, new construction, new process etc. it is extensive research and application, wear display system military field, health care,
Industrial design field and the audio-visual equal multiple fields of amusement play increasingly important role.But existing wear shows dress
It sets and forms waveguide piece by fixing a large amount of small prism fittings mostly, manufacturing process is complicated, and difficulty of processing is big.
Summary of the invention
The object of the present invention is to provide a kind of head-wearing display devices, and manufacturing process is simple, and difficulty of processing is small, are convenient for volume production
Change.
To achieve the above object, the present invention provides following schemes:
A kind of head-wearing display device, the head-wearing display device include: micro-display, lens, planar waveguide, total reflection mirror
With triangle microstructured layers, wherein
The setting of micro-display described in the lens face, the image light for showing the micro-display carry out quasi-
Directly, collimated light beam is obtained；The total reflection mirror is embedded in the planar waveguide, and the total reflection mirror is located at the lens
On emitting light path, the triangle microstructured layers are set on a surface of the planar waveguide, and the collimated light beam passes through institute
Total reflection propagation is carried out in the planar waveguide after stating total reflection mirror reflection, the light for being totally reflected propagation is incident on the triangle
Shape microstructured layers, the emergent ray of the triangle microstructured layers is projected perpendicular to light-emitting surface enters human eye, and the light-emitting surface is
The surface of the planar waveguide of triangle microstructured layers described in face.
Optionally, the triangle microstructured layers are identical with the material of the planar waveguide.
Optionally, the range of the total reflection mirror and the angle α of the planar waveguide is:
Wherein, n indicates triangle microstructured layers and planar waveguide
Refractive index, ω indicate the incident ray of planar waveguide and the angle of planar waveguide normal.
Optionally, the collimated light beam carries out total reflection biography after total reflection mirror reflection in the planar waveguide
The range of the total reflection angle beta of sowing time is:
Optionally, the triangle microstructured layers include N number of single triangle micro-structure in cyclic array arrangement, N
≥2。
Optionally, the section of the single triangle micro-structure is right angled triangle, and one of the right angled triangle is straight
Contact surface of the arm of angle perpendicular to the planar waveguide and the triangle microstructured layers, another right angle of the right angled triangle
Side is located in the contact surface.
Optionally, the angle and the total reflection mirror and the plate of the bevel edge of the right angled triangle and the contact surface
The angle of waveguide is equal.
Optionally, the length of the triangle microstructured layers are as follows:
Wherein, l indicates the length of triangle microstructured layers, and T indicates plate
The thickness of waveguide.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
A kind of head-wearing display device provided by the invention includes: micro-display, lens, planar waveguide, total reflection mirror and three
Angular microstructured layers.The setting of lens face micro-display, the image light for showing micro-display are collimated, are put down
Row light beam.Total reflection mirror is embedded in planar waveguide, and total reflection mirror is located on the emitting light path of lens, triangle microstructured layers
On a surface of planar waveguide, collimated light beam carries out total reflection biography after total reflection mirror reflects in planar waveguide
It broadcasts, the light for being totally reflected propagation is incident on triangle microstructured layers, and the emergent ray of triangle microstructured layers is perpendicular to light-emitting surface
It projects and enters human eye, light-emitting surface is the surface of triangle microstructured layers described in the face of planar waveguide.The present invention is in planar waveguide
Upper setting triangle microstructured layers, with it is traditional by a large amount of small prisms fittings are fixed form the technical solution of waveguide piece compared with, this
The manufacturing process for inventing the display device provided is simple, and difficulty of processing is small, is convenient for mass production.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of head-wearing display device provided in an 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
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, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of head-wearing display devices, and manufacturing process is simple, and difficulty of processing is small, are convenient for volume production
Change.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is a kind of structural schematic diagram of head-wearing display device provided in an embodiment of the present invention.As shown in Figure 1, a kind of head
Display device is worn, the head-wearing display device includes: that micro-display 1, lens 2, planar waveguide 3, total reflection mirror 4 and triangle are micro-
Structure sheaf 5.
The setting of micro-display 1 described in 2 face of lens, the image light for showing the micro-display 1 carry out
Collimation obtains collimated light beam.The total reflection mirror 4 is embedded in the planar waveguide 3, and the total reflection mirror 4 is positioned at described
On the emitting light path of lens 2, the triangle microstructured layers 5 are set on a surface of the planar waveguide 3, the directional light
Beam carries out total reflection propagation in the planar waveguide 3 after the total reflection mirror 4 reflection, and the light for being totally reflected propagation is incident
To the triangle microstructured layers 5, the emergent ray of the triangle microstructured layers 5 is projected perpendicular to light-emitting surface enters human eye 6,
The light-emitting surface is the surface of the planar waveguide 3 of triangle microstructured layers 5 described in face.
In the present embodiment, the triangle microstructured layers 5 are identical with the material of the planar waveguide 3.
The range of the total reflection mirror 4 and the angle α of the planar waveguide 3 is:
Wherein, n indicates triangle microstructured layers and planar waveguide
Refractive index, ω indicate the incident ray of planar waveguide and the angle of planar waveguide normal.
When the collimated light beam carries out total reflection propagation after the total reflection mirror 4 reflection in the planar waveguide 3
The range of total reflection angle beta be:
Specifically, the triangle microstructured layers 5 include N number of single triangle micro-structure in cyclic array arrangement, N
≥2.The section of the single triangle micro-structure is right angled triangle, and a right-angle side of the right angled triangle is perpendicular to institute
The contact surface of planar waveguide 3 Yu the triangle microstructured layers 5 is stated, another right-angle side of the right angled triangle is located at described
In contact surface.The angle and the total reflection mirror 4 and the planar waveguide 3 of the bevel edge of the right angled triangle and the contact surface
Angle it is equal.
The width of triangle microstructured layers 5 is of same size with planar waveguide 3, the length of triangle microstructured layers 5 are as follows:
Wherein, l indicates the length of triangle microstructured layers, and T indicates plate
The thickness of waveguide, T=Dsin α, D are the equivalent diameter of a circle of lens emergent light spot.
When light passes through as the triangle micro-structure 5 for going out coupled structure, finally from the work of the other side of planar waveguide 3
Surface outgoing, final parallel rays enter in observer's eye display process of completing, good imaging quality, brightness height.
In practical application, the micro-display 1 is chosen as LOCS (Liquid Crystal on Silicon, silicon substrate liquid
It is brilliant) display, OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) display, FLCOS
(Ferroelectric Liquid Crystal On Silicon, silicon-based ferroelectric liquid crystal) display or AM-LCD (active
Matrix liquid crystal display, active matrix liquid crystal display) display.The lens 2 are chosen as double gluings
Lens, biconvex lens or plano-convex lens.
In the prior art, light is more through multiple reflections energy loss in waveguide, and the efficiency of light energy utilization is low.The present invention is in plate
Triangle micro-structure is arranged in the surface of waveguide, carries out image coupling using triangle micro-structure, can be improved light extraction yield and light
It can utilization rate.Not only the efficiency of light energy utilization is high for display device provided by the invention, and image clearly brightness is high, and easy to use, dress
Setting has the advantages that miniaturization and lightness.
Further, visual field is uneven at existing display device emergent pupil, the general disadvantage of imaging effect, the present invention
The extension of vertical direction emergent pupil is carried out using triangle micro-structure, the visual field magnifying power in equilibrium level direction makes vertical direction and water
Square to visual field magnifying power it is identical, make display device that there is better visual field uniformity, have that emergent pupil is big, field angle is big, view
Uniformly, high resolution, comfortable user's use feeling the features such as.
The course of work of display device provided in this embodiment are as follows:
(1) display device provided by the invention is wearable on existing frame, and planar waveguide is fixed on glasses
On frame, make triangle micro-structure face human eye, it is preferable that make the center of triangle micro-structure and the eyeball center weight of user
It closes.Micro-display 1 and lens 2 are set to the side of frame.Micro-display 1 show image light through lens 2 collimation after,
The light of different visual fields is switched into directional light, directional light is coupled to planar waveguide by being embedded in the total reflection mirror 4 of planar waveguide 3
In, and multiple total reflection propagation is carried out in planar waveguide.
(2) light enters triangle microstructured layers progress vertical direction emergent pupil in planar waveguide after multiple total reflection
Extension, the visual field magnifying power in equilibrium level direction guarantee that vertical direction is identical as the visual field magnifying power of horizontal direction.
(3) when light is after triangle microstructure area carries out the extension of vertical direction emergent pupil, from the another of planar waveguide 3
The working surface vertical exit of side, into completion display process in observer's eye.
The present invention adjusts optical path, wear-type provided by the invention by adding triangle micro-structure on planar waveguide surface
Display device have miniaturization, lightness, field angle greatly, emergent pupil visual field is uniform, brightness of image is high, easy to use, at low cost, suitable
With the wide advantage of range.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (8)
1. a kind of head-wearing display device, which is characterized in that the head-wearing display device includes: micro-display, lens, plate wave
It leads, total reflection mirror and triangle microstructured layers, wherein
The setting of micro-display described in the lens face, the image light for showing the micro-display are collimated, are obtained
Obtain collimated light beam；The total reflection mirror is embedded in the planar waveguide, and the total reflection mirror is located at the outgoing of the lens
In optical path, the triangle microstructured layers are set on a surface of the planar waveguide, and the collimated light beam is by described complete
Total reflection propagation is carried out in the planar waveguide after reflecting mirror reflection, being totally reflected the light of propagation, to be incident on the triangle micro-
Structure sheaf, the emergent ray of the triangle microstructured layers is projected perpendicular to light-emitting surface enters human eye, and the light-emitting surface is face
The surface of the planar waveguide of the triangle microstructured layers.
2. a kind of head-wearing display device according to claim 1, which is characterized in that triangle microstructured layers and described
The material of planar waveguide is identical.
3. a kind of head-wearing display device according to claim 2, which is characterized in that the total reflection mirror and the plate wave
The range for the angle α led is:
Wherein, n indicates the refraction of triangle microstructured layers and planar waveguide
Rate, ω indicate the incident ray of planar waveguide and the angle of planar waveguide normal.
4. a kind of head-wearing display device according to claim 3, which is characterized in that be all-trans described in the collimated light beam process
The range for penetrating total reflection angle beta when carrying out total reflection propagation after mirror reflects in the planar waveguide is:
5. a kind of head-wearing display device according to claim 4, which is characterized in that the triangle microstructured layers include N
A single triangle micro-structure in cyclic array arrangement, N >=2.
6. a kind of head-wearing display device according to claim 5, which is characterized in that the single triangle micro-structure is cut
Face is right angled triangle, and a right-angle side of the right angled triangle is perpendicular to the planar waveguide and the triangle micro-structure
The contact surface of layer, another right-angle side of the right angled triangle are located in the contact surface.
7. a kind of head-wearing display device according to claim 6, which is characterized in that the bevel edge of the right angled triangle and institute
The angle for stating contact surface is equal with the angle of the planar waveguide with the total reflection mirror.
8. a kind of head-wearing display device according to claim 6, which is characterized in that the length of the triangle microstructured layers
Are as follows:
Wherein, l indicates the length of triangle microstructured layers, and T indicates planar waveguide
Thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811633637.9A CN110146983B (en) | 2018-12-29 | 2018-12-29 | Head-mounted display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811633637.9A CN110146983B (en) | 2018-12-29 | 2018-12-29 | Head-mounted display device |
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| CN110146983A true CN110146983A (en) | 2019-08-20 |
| CN110146983B CN110146983B (en) | 2024-01-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474720A (en) * | 2020-05-05 | 2020-07-31 | 谷东科技有限公司 | Optical waveguide display device and augmented reality display apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2244112A1 (en) * | 2009-04-20 | 2010-10-27 | BAE Systems PLC | Improvements in optical waveguides |
| CN105929545A (en) * | 2016-06-20 | 2016-09-07 | 东莞市长资实业有限公司 | Waveguide type head-mounted display optical device |
| CN108983425A (en) * | 2018-08-29 | 2018-12-11 | 深圳珑璟光电技术有限公司 | A kind of nearly optics of the eye display device of two-dimensional exit pupil extension waveguide |
-
2018
- 2018-12-29 CN CN201811633637.9A patent/CN110146983B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2244112A1 (en) * | 2009-04-20 | 2010-10-27 | BAE Systems PLC | Improvements in optical waveguides |
| CN105929545A (en) * | 2016-06-20 | 2016-09-07 | 东莞市长资实业有限公司 | Waveguide type head-mounted display optical device |
| CN108983425A (en) * | 2018-08-29 | 2018-12-11 | 深圳珑璟光电技术有限公司 | A kind of nearly optics of the eye display device of two-dimensional exit pupil extension waveguide |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474720A (en) * | 2020-05-05 | 2020-07-31 | 谷东科技有限公司 | Optical waveguide display device and augmented reality display apparatus |
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| CN110146983B (en) | 2024-01-09 |
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