CN104536136A - Folding collimating optical waveguide device for display - Google Patents
Folding collimating optical waveguide device for display Download PDFInfo
- Publication number
- CN104536136A CN104536136A CN201510036541.4A CN201510036541A CN104536136A CN 104536136 A CN104536136 A CN 104536136A CN 201510036541 A CN201510036541 A CN 201510036541A CN 104536136 A CN104536136 A CN 104536136A
- Authority
- CN
- China
- Prior art keywords
- substrate
- light
- optical
- display
- light wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention provides a folding collimating optical waveguide device for display. The folding collimating optical waveguide device comprises a display light source, a collimating lens, an optical wave coupling input surface, an optical wave extension transmission substrate, an optical wave coupling output surface and an optical wave collimating component, wherein the display light source is used for emitting display optical waves for displaying a required image, the collimating lens is used for collimating the optical waves emitted by the light source, the optical wave coupling input surface is used for coupling the collimated optical waves into a planar waveguide, and the optical wave extension transmission substrate is used for performing reflecting propagating on the coupled optical waves to form total reflection optical waves; the optical wave coupling output surface is used for changing a propagation direction of the transmitted optical waves in the substrate, so that the optical waves are output of the substrate in a coupling manner; the optical wave collimating component is used for collimating light which is coupled out of the substrate, so that an observation view field is expanded. The optical device disclosed by the invention has a large view field and a compact optical design, not only can be used for wearable display, but also can be used for fields such as vehicle navigation display as well as naked eye 3D display.
Description
Technical field
The present invention relates to a kind of optical waveguide device, particularly a kind of folding collimating optics waveguide device that can be used for image display.
Background technology
At present, popular wearable display device and the flat pannel display of other compact conformations, notebook display system etc. are all the image information relying on optical device to transmit and show required preview usually.Such as display system a distance by using optical lens picture can be presented at virtually human eye front, thus the content that relevant electronic information is browsed in roadside can be walked in limit, enhance presence.Usually the core component that this type of optical system is main is made up of three parts: coupling input media, transferring substrate and output coupler.Compact conformation, light and handy, that visual field is large and high image resolution ratio are the targets that this type of optical system is pursued always in addition.Although the imaging mode of routine and periscope system can obtain larger visual field, along with the increase of visual field, the weight and volume of optical system entirety also can sharply increase thereupon, causes under many circumstances, and the application of this type of optical system is restricted.Seek light structure for this reason, trend that the design of compact optical system has just become this type of image device to study.
In order to solve the defect that traditional wearable device causes due to optical imaging system weight and volume, the present invention devises a kind of novel folding collimating optics waveguide device for showing.
Summary of the invention
In order to solve the problem, the invention provides a kind of folding collimating optics waveguide device for showing.
In order to achieve the above object, present invention employs following technical scheme:
For the folding collimating optics waveguide device shown, it is characterized in that: comprise successively: display light source, for sending the display light wave of display required image; Collimation lens, collimates the light wave that light source sends; Light wave coupling-in face, is coupled into slab guide by collimated light waves; Light wave expansion transferring substrate, carries out reflections propagate to the light wave be coupled into and forms total reflection light wave; Light wave coupling-out face, changes transmission light direction of wave travel in substrate, makes its coupling output substrate; Light wave collimator assembly, for being collimated by the light being coupled out substrate, thus expands observation visual field.Wherein, collimation lens is between display light source and expansion transferring substrate, and collimation lens and display light source are arranged in the top of substrate coupling-in face side, and light wave collimator assembly is then arranged in the below of substrate coupling-out face side, are close to the lower surface of substrate.The present invention mainly utilizes internal reflection, visual angle amplification and prism change light wave propagation orientation principle to realize.Collimation lens is adopted to be collimated by the light wave from display light source, and the light signal after collimation is directly coupled in substrate, utilize the design of total reflection to make light wave can be transferred to required coupling output position in the substrate losslessly, prism is utilized to break the total reflection condition of light wave in waveguide in coupling output position by light wave coupling output substrate, then utilize the light wave of collimated light beam assembly to coupling output to collimate, thus reach the effect increasing and observe visual field.
The present invention, for the folding collimating optics waveguide device shown, also has such feature: collimation lens is made up of biconvex lens.
The present invention, for the folding collimating optics waveguide device shown, also has such feature: the angle that light wave expansion transferring substrate meets light and the substrate upper and lower surface normal making to transmit in the substrate is greater than the cirtical angle of total reflection.
The present invention, for the folding collimating optics waveguide device shown, also has such feature: light wave collimator assembly is made up of the trapezoidal element of a series of special construction, and the reflecting surface of this trapezoidal element makes the light inciding this reflecting surface be totally reflected.
Compared with existing imaging guides system, the present invention has large visual field and compact optical design.These advantages make the present invention compared to traditional imaging system, and volume and weight is reduced, and under identical volume, visual field is larger, and structure is also compacter, light and handy.Optical system of the present invention can not only be used for wearable display, also can be used for the fields such as auto navigation display and bore hole 3D display.
Accompanying drawing explanation
Fig. 1 is the present invention for the schematic diagram of the folding collimating optics waveguide device shown;
Fig. 2 is the present invention for the schematic diagram of light wave in the folding collimating optics waveguide device that shows in substrate transport;
Fig. 3 is the present invention for the light wave collimator assembly schematic diagram of the folding collimating optics waveguide device shown; And
Fig. 4 is the present invention for a kind of application example of the folding collimating optics waveguide device shown.
Embodiment
Below in conjunction with accompanying drawing, specific works process of the present invention is described.
Fig. 1 is the present invention for the schematic diagram of the folding collimating optics waveguide device shown.As shown in Figure 1, system composition of the present invention comprises: the expansion of display light source 10, collimation lens 11, light wave coupling-in face 12, light wave transferring substrate 13, light wave coupling-out face 14 and light wave collimator assembly 15.The light wave that display light source 10 sends is after the collimation of collimation lens 11, incide on light wave coupling-in face 12, through the reflection of coupling-in face, light wave is coupled in light wave expansion transferring substrate 13, and light wave carries out lossless transmission with the form of total reflection in the substrate, arrive on light wave coupling-out face 14, through the reflection of output face, light wave exports substrate, enters into light wave collimator assembly 15, output beam collimates by this assembly, thus expands observation visual field.
The present invention is made up of six parts for the folding collimating optics waveguide device shown, and can expand accordingly for concrete application to the ingredient of waveguide device of the present invention, thus the application potential of further elevator system.Give respective explanations for concrete tetrameric effect of the present invention below to illustrate:
Display light source 10 is wearing in display application system the image information mainly provided for observing.And the display light source of main flow has LCD, OLED etc. at present.Due to different display light sources, its polarization state is not identical yet, therefore needs when selecting light source to choose according to the requirement of planar tooth waveguide to Different Light lightwave transmission characteristics, otherwise will cause occurring ghost image in image, and then reduce the display quality of image, have impact on point variability of image.
Collimation lens 11 mainly collimates the light wave that display light source sends, and it is made up of biconvex lens.In order to realize the virtual display of image and make light wave be coupled into as much as possible in substrate, usually according to concrete demand, corresponding achromat should be designed light wave is collimated.
Light wave coupling-in face 12 is mainly used for the optical signal in the external world in folded substrate.Can the modes such as prism be had replace for this input face.
Light wave expansion transferring substrate 13 is for amplifying the visual field of the light wave be coupled in substrate.Due to the existence of this expansion transferring substrate, make the different angles of light signal in direction of observation can enter into the visual field of observer, thus expand the visual field of observer.
Light wave coupling-out face 14 is mainly used in the optical signal transmitted in the substrate to go out substrate.Due to light wave transmit in the substrate time, meet total reflection principle, for making light wave coupling output substrate, light wave should be less than the cirtical angle of total reflection in the incident angle of substrate surface, introduce coupling-out face for this reason, make light be less than the cirtical angle of total reflection in the incident angle at substrate surface after the reflection of output face, thus be coupled output substrate.
Light wave collimator assembly 15 consists of a prism.The light exported from substrate causes visual field when directly observing too little because the angle of divergence is excessive, therefore needs to introduce collimator assembly, makes emergent light wave energy as much as possible enough enter into the visual field of observer, thus expands observation visual field.
The job step of optical waveguide device of the present invention and exemplary application:
Fig. 2 is the present invention for the schematic diagram of light wave in the folding collimating optics waveguide device that shows in substrate transport.As shown in Figure 2, light 20,21 from the same light wave of light source impinges perpendicularly on coupling-in face, and the reflecting light through input face is coupled in expansion transferring substrate, propagates with the form be totally reflected, arrive coupling-out face, and then be reflected outside substrate.In order to the condition making light wave can meet total reflection in the substrate, substrate can should be made up of the folding and expanding assembly that the direction of propagation of light carries out accurately locating a series of.First the light be coupled in substrate collide with the upper surface of substrate, and through the reflection of upper surface, incide substrate lower surface, then circle transmission is to coupling-out face.Through this process light wave propagation, can expand the direction of propagation of light on the one hand, play the effect of field expander, the ghost effect can effectively avoiding the change due to light transmition direction to bring on the other hand.
Fig. 3 is the present invention for the light wave collimator assembly schematic diagram of the folding collimating optics waveguide device shown.As shown in Figure 3, light wave collimator assembly is made up of the trapezoidal element 30 of special construction.After the light 31 being coupled out substrate enters into light wave collimator assembly, meet with the reflecting surface 32 of collimator assembly, total reflection occurs this reflecting surface and is output to outside collimator assembly.In order to ensure that the light entering collimator assembly can meet total reflection condition, need to carry out corresponding structural design to reflecting surface 32, the light wave making the reflecting surface collimating trapezium structure be enough to coupling to be come in is as much as possible to be collimated.
Fig. 4 is the present invention for a kind of application example of the folding collimating optics waveguide device shown.Optical waveguide device of the present invention can be used for the aspects such as illumination, imaging and 3D projection, below in conjunction with concrete application example, being further described property of principle of work of the present invention is explained: as shown in Figure 4, from the light 47,48 of the same light wave of light source 40 through the collimation of collimation lens 41, incide coupling-in face 42, because light 47,48 is through the collimation of collimation lens, coupling-in face can be entered into well.Through the reflection of coupling-in face 42, light 47,48 is coupled and is input in expansion transferring substrate 43, when should ensure that light 47,48 is propagated in the substrate simultaneously, the cirtical angle of total reflection of material must be greater than with the angle of substrate upper and lower surface normal, otherwise can owing to reflecting when light transmits in the substrate, cause the significantly loss of energy, finally cause the energy of coupling output substrate too little, reduce the brightness of image.The light being coupled into substrate finally arrives on coupling-out face 44 through the transmission of substrate, and now the angle of light and output surface normal is less than the cirtical angle of total reflection of material, thus breaks the total reflection condition of light wave, and light wave is incided in expansion collimator assembly 45.Under the reflection of each trapezoidal element of collimator assembly, change the direction of propagation of coupling output foundation light, thus make the light be again collimated more can enter into the visual field 46 of people.Because the oculopupillary diameter of people is about 2-8mm, therefore human eye can observe the image of whole light source.For different application, the quantity forming the trapezoidal element of collimator assembly can design accordingly, but the picture of light source must be launched completely.
The effect of the present embodiment
The present embodiment provide in the folding collimating optics waveguide device that shows owing to have employed expansion transferring substrate, can expand the direction of propagation of light on the one hand, play the effect of field expander, the ghost effect can effectively avoiding the change due to light transmition direction to bring on the other hand.In addition because the trapezoidal element of light wave collimator assembly by a series of special construction forms, the surface of each trapezoidal element can collimate the light of coupling output substrate, thus more light can be made to enter human eye, thus expand visual field, improve the brightness of image.
Claims (4)
1. the folding collimating optics waveguide device for showing, comprises successively:
Display light source, for sending the display light wave of display required image;
Collimation lens, collimates the light wave that display light source sends;
Light wave coupling-in face, is coupled into slab guide by collimated light waves;
Light wave expansion transferring substrate, carries out reflections propagate to the light wave be coupled into and forms total reflection light wave;
Light wave coupling-out face, changes transmission light direction of wave travel in substrate, makes its coupling output substrate;
Light wave collimator assembly, for being collimated by the light being coupled out substrate, thus expands observation visual field,
Wherein, collimation lens is between display light source and expansion transferring substrate, and collimation lens and display light source are arranged in the top of substrate coupling-in face side, and light wave collimator assembly is then arranged in the below of substrate coupling-out face side, are close to the lower surface of substrate.
2. optical device according to claim 1, is characterized in that:
Collimation lens is made up of biconvex lens.
3. optical device according to claim 1, is characterized in that:
The angle that light wave expansion transferring substrate meets light and the substrate upper and lower surface normal making to transmit in the substrate is greater than the cirtical angle of total reflection.
4. optical device according to claim 1, is characterized in that:
Light wave collimator assembly is made up of the trapezoidal element of a series of special construction, and the reflecting surface of this trapezoidal element makes the light inciding this reflecting surface be totally reflected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036541.4A CN104536136A (en) | 2015-01-25 | 2015-01-25 | Folding collimating optical waveguide device for display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036541.4A CN104536136A (en) | 2015-01-25 | 2015-01-25 | Folding collimating optical waveguide device for display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104536136A true CN104536136A (en) | 2015-04-22 |
Family
ID=52851690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510036541.4A Pending CN104536136A (en) | 2015-01-25 | 2015-01-25 | Folding collimating optical waveguide device for display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104536136A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018001318A1 (en) * | 2016-07-01 | 2018-01-04 | 成都理想境界科技有限公司 | Near-eye display system, virtual-reality device, and augmented-reality device |
| CN107678161A (en) * | 2017-10-23 | 2018-02-09 | 南京理湃光电技术有限公司 | The folding collimating optic shown for image |
| CN107703632A (en) * | 2017-10-23 | 2018-02-16 | 南京理湃光电技术有限公司 | The light folded waveguide display device of prism-coupled |
| CN107942430A (en) * | 2017-11-21 | 2018-04-20 | 上海理湃光晶技术有限公司 | A kind of complex optics wearing shows waveguide device |
| CN111492302A (en) * | 2017-12-22 | 2020-08-04 | 迪斯帕列斯有限公司 | Stepped waveguide element, personal display device and method of producing an image |
| CN111492273A (en) * | 2017-12-22 | 2020-08-04 | 迪斯帕列斯有限公司 | Multilayer waveguide display element |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0915435A (en) * | 1995-06-26 | 1997-01-17 | Nippon Telegr & Teleph Corp <Ntt> | Optical coupling device and optical function device |
| US6324312B1 (en) * | 1999-11-30 | 2001-11-27 | National Science Council | Structure and method for fabricating a wide-angle TE-TM mode splitter |
| CN201540945U (en) * | 2009-07-22 | 2010-08-04 | 电子科技大学 | Serpentine groove guide slow-wave line |
| CN103336331A (en) * | 2013-06-28 | 2013-10-02 | 上海理工大学 | Zigzag optical waveguide device |
| CN103364952A (en) * | 2012-03-26 | 2013-10-23 | 精工爱普生株式会社 | Virtual image display apparatus |
| CN103424803A (en) * | 2013-08-16 | 2013-12-04 | 上海理工大学 | Optical waveguide device system |
-
2015
- 2015-01-25 CN CN201510036541.4A patent/CN104536136A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0915435A (en) * | 1995-06-26 | 1997-01-17 | Nippon Telegr & Teleph Corp <Ntt> | Optical coupling device and optical function device |
| US6324312B1 (en) * | 1999-11-30 | 2001-11-27 | National Science Council | Structure and method for fabricating a wide-angle TE-TM mode splitter |
| CN201540945U (en) * | 2009-07-22 | 2010-08-04 | 电子科技大学 | Serpentine groove guide slow-wave line |
| CN103364952A (en) * | 2012-03-26 | 2013-10-23 | 精工爱普生株式会社 | Virtual image display apparatus |
| CN103336331A (en) * | 2013-06-28 | 2013-10-02 | 上海理工大学 | Zigzag optical waveguide device |
| CN103424803A (en) * | 2013-08-16 | 2013-12-04 | 上海理工大学 | Optical waveguide device system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018001318A1 (en) * | 2016-07-01 | 2018-01-04 | 成都理想境界科技有限公司 | Near-eye display system, virtual-reality device, and augmented-reality device |
| CN107678161A (en) * | 2017-10-23 | 2018-02-09 | 南京理湃光电技术有限公司 | The folding collimating optic shown for image |
| CN107703632A (en) * | 2017-10-23 | 2018-02-16 | 南京理湃光电技术有限公司 | The light folded waveguide display device of prism-coupled |
| CN107942430A (en) * | 2017-11-21 | 2018-04-20 | 上海理湃光晶技术有限公司 | A kind of complex optics wearing shows waveguide device |
| CN111492302A (en) * | 2017-12-22 | 2020-08-04 | 迪斯帕列斯有限公司 | Stepped waveguide element, personal display device and method of producing an image |
| CN111492273A (en) * | 2017-12-22 | 2020-08-04 | 迪斯帕列斯有限公司 | Multilayer waveguide display element |
| US11281010B2 (en) | 2017-12-22 | 2022-03-22 | Dispelix Oy | Curved staircase waveguide element, personal display device and method of producing an image |
| CN111492273B (en) * | 2017-12-22 | 2023-08-22 | 迪斯帕列斯有限公司 | Multilayer waveguide display element |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104536136A (en) | Folding collimating optical waveguide device for display | |
| TWI837049B (en) | Optical system including light-guide optical element with partially-reflective internal surfaces | |
| CN103513423B (en) | Perspective display device | |
| CN103513424B (en) | Perspective display device | |
| CN103424803B (en) | Optical waveguide device system | |
| US10247942B2 (en) | Device for extending the exit pupil and head up display comprising said device | |
| US9500870B2 (en) | Beam splitting system for laser ranging | |
| US20140192418A1 (en) | Optical Element and Optical Mechanism | |
| CN108681067A (en) | A kind of waveguide display device at extended field of view angle | |
| US20210063765A1 (en) | Waveguide-based augmented reality display apparatus | |
| CN104199187A (en) | Substrate-guided optical device | |
| CN103513422B (en) | Perspective display device | |
| EP4198582A1 (en) | Composite prism based on isosceles prism, and laser ranging telescope comprising composite prism | |
| CN104536139B (en) | A kind of tapered planar wave guide optics of prism-coupled | |
| US8009363B2 (en) | Prism beamsplitters | |
| CN104597602A (en) | Efficiently coupled tooth embedded slab guide optical element in compact structure | |
| CN100405126C (en) | Optical system of small dynamic starlight analog device | |
| CN104536137A (en) | Folding expanding optical waveguide device for image display | |
| CN102830498A (en) | Dynamic large-view-field small-distortion star simulator optical system | |
| CN109581664A (en) | Optical devices and augmented reality display device | |
| CN111175971A (en) | Near-to-eye optical display system and augmented reality glasses | |
| CN104536140A (en) | Folding extension display optical device based on prism coupling | |
| CN110231714B (en) | Method for enhancing light intensity uniformity of optical waveguide of AR glasses | |
| CN101165542B (en) | Retro-reflective type light pipe, illumination device including the same and projection display including the illumination device | |
| CN103336331B (en) | Zigzag optical waveguide device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |