CN103336331B - Zigzag optical waveguide device - Google Patents

Zigzag optical waveguide device Download PDF

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Publication number
CN103336331B
CN103336331B CN201310270126.6A CN201310270126A CN103336331B CN 103336331 B CN103336331 B CN 103336331B CN 201310270126 A CN201310270126 A CN 201310270126A CN 103336331 B CN103336331 B CN 103336331B
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prism
light wave
angle
substrate
tortuous
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CN103336331A (en
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张文君
张庆
于德鲁
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University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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Abstract

The invention provides an optical waveguide device used for wearing display. The optical waveguide device comprises an optical wave coupling input prism, an optical wave transmission zigzag substrate, an optical wave coupling output prism, an optical wave spreading assembly and an optical wave beam pressing assembly, wherein the optical wave coupling input prism is used for receiving an optical signal from the outside and inputting the optical signal into the optical wave transmission zigzag substrate; the optical wave transmission zigzag substrate is capable of enabling optical waves to be subjected to total-reflection transmission in the substrate; the optical wave coupling output prism is used for outputting the optical signal transmitted from the optical wave transmission zigzag substrate; the optical wave spreading assembly is used for spreading the optical waves output by the optical wave coupling output prism; the beam pressing assembly is used for receiving the optical waves from the optical wave spreading assembly and enabling the optical waves to be uniformly distributed on the output end surface of the beam pressing assembly. The optical waveguide device has the characteristic of compact structure and can be used in application fields of naked eye displaying, imaging, illuminating and the like.

Description

A kind of Zigzag optical waveguide device
Technical field
The present invention relates to a kind of optical device of waveguide type, particularly a kind of Zigzag optical waveguide device.
Background technology
Wearable display device and other compact flat pannel display, notebook display system etc. all rely on optical element to transmit the image needing display usually.Such as, display system utilize lens by amplify after image information display at, 2 meters, the front of human eye, while do not affect again the observation of human eye to surrounding scenes.Thus movable can browse required electronic information content as driven a car, while operating instrument being engaged in other.Usually the core component optical system of this type of display system forms primarily of three parts: light wave coupling device, light wave transmissions assembly and light wave output coupling device, light wave transmissions assembly is wherein generally the structure of quadrangular, light wave output coupling device is a prism, be totally reflected on the surface of prism after the light of image is transferred to light wave output coupling device by quadrangular, after changing transmission direction, enter human eye.Although adopt conventional formation method can obtain large visual field, along with the increase of visual field, the weight and volume of optical system entirety sharply increases thereupon, and the design therefore seeking light and handy, compact optical system has just become the trend of this type of imaging system.
In order to solve the deficiency that traditional wearable device causes due to optical imaging system weight and volume, the present invention devises a kind of novel optical waveguide assembly.
Summary of the invention
The present invention is raised the price a kind of Zigzag optical waveguide device, it is characterized in that, comprising: light wave coupling input prism, light wave transmissions tortuous substrate, light wave coupling output prism, image spread assembly and light wave pressure beam assembly.Wherein, the tortuous substrate of light wave coupling input prism and light wave transmissions is connected, and is inputed to light wave transmissions complications substrate for the light signal that receives from the external world.The tortuous substrate of light wave transmissions is made up of at least one repetitive, the isosceles trapezoid that two upper bases identical sized by the shape of repetitive are connected, and the shape of isosceles trapezoid can make light signal carry out total reflection transmission wherein.Light wave coupling output prism is connected with the tortuous substrate of light wave transmissions, is exported by the light signal of being come by the tortuous substrate transport of light wave transmissions.Image spread assembly is connected with light wave coupling output prism, the global shape of image spread assembly is isosceles trapezoid, isosceles trapezoid is made up of the identical parallelogram prism of multiple size and shape and at least one polygonal prism, and image spread assembly launches the light signal that light wave coupling output prism exports.Light wave pressure beam assembly receives the light signal from image spread assembly and makes on its output end face being evenly distributed in pressure beam assembly.
In addition, in Zigzag optical waveguide device of the present invention, such feature can also be had:
Wherein, the tortuous lower surface of substrate of light wave transmissions of repetitive and the angle of the axis of tortuous substrate between 10 ° ~ 20 °, and meet with following relationship:
α sur=2α outsur1
Wherein, β sur1the angle of the axis of tortuous substrate lower surface and tortuous substrate, α surthe angle of axial principal ray and tortuous substrate surface normal, α surbe greater than 45 °, α outthe angle of coupling output prismatic reflection face and output face, α out45 ° should be less than.
In addition, in Zigzag optical waveguide device of the present invention, such feature can also be had:
Wherein, the light wave coupling input input face of prism and the angle of reflecting surface are less than 45 °, and equal with the angle of output face with the reflecting surface of light wave coupling output prism.
In addition, in Zigzag optical waveguide device of the present invention, such feature can also be had: wherein, light wave pressure beam assembly is made up of multiple right-angled trapezium prism close-packed arrays that size and shape is identical, the right angle kidney chop of multiple right-angled trapezium is listed on straight line, and the upper base of multiple right-angled trapezium prism is all towards same direction.
In addition, in Zigzag optical waveguide device of the present invention, such feature can also be had:
Wherein, the angle of at 45 ° ~ 90 ° of going to the bottom of the long limit of parallelogram prism and isosceles trapezoid, and meet following relation:
eoout-90°=γ
Wherein, γ is the angle of the emergent ray of image spread assembly and the output surface normal of light wave coupling output prism, α ethe long limit of parallelogram prism and the angle of going to the bottom of isosceles trapezoid, α outthe reflecting surface of coupling output prism and the angle of output face.
In addition, in Zigzag optical waveguide device of the present invention, such feature can also be had: wherein, light wave pressure beam assembly is made up of multiple right-angled trapezium prism close-packed arrays that size and shape is identical, the right angle kidney chop of multiple right-angled trapezium is listed on straight line, and the upper base of multiple right-angled trapezium prism is all towards same direction.
In addition, in Zigzag optical waveguide device of the present invention, such feature can also be had: wherein, parallelogram prism in right-angled trapezium prism and image spread assembly and polygonal prism are one-to-one relationship, and the width of the right angle waist of right-angled trapezium prism is equal with the width of the minor face of parallelogram prism.
In addition, in Zigzag optical waveguide device of the present invention, can also have such feature: wherein, the oblique waist of right-angled trapezium prism meets formula with the angle of going to the bottom:
n*sin(90°-α p)=sinθ
Wherein, θ is the angle of incident ray and light wave pressure beam assembly surface normal, and n is the refractive index of material, α pthe oblique waist of the right-angled trapezium prism in light wave pressure beam assembly and the angle of going to the bottom.
Compared with existing imaging guides system, the invention has the beneficial effects as follows: according to complications expansion pressure beam optical waveguide device of the present invention, on the one hand due to the existence of tortuous substrate, make light signal can enter into the visual field of observer in the different angles of direction of observation, thus expand the visual field of observer, simultaneously due to ghost problems that the existence of tortuous substrate can avoid the change due to light transmition direction to bring effectively.
On the other hand, owing to present invention uses the structure of tortuous substrate, make light can carry out complications transmission wherein, therefore under the prerequisite not changing visual field, on volume, there is obvious reduction to become light and handy, and owing to adopting tortuous shape, material contained by itself reduces, and alleviates the weight of whole imaging system.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of Zigzag optical waveguide device of the present invention;
Fig. 2 is the light wave propagation schematic diagram of Zigzag optical waveguide device of the present invention;
Fig. 3 is the image spreading assembly exploded view of Zigzag optical waveguide device of the present invention;
Fig. 4 is the image spreading assembly constitutional diagram of Zigzag optical waveguide device of the present invention;
Fig. 5 is the single component units figure of the pressure beam prism assemblies of Zigzag optical waveguide device of the present invention;
Fig. 6 is the pressure beam prism assemblies overall diagram of Zigzag optical waveguide device of the present invention;
Fig. 7 is the concrete application schematic diagram of of Zigzag optical waveguide device of the present invention; And
Fig. 8 is the schematic diagram that Zigzag optical waveguide device of the present invention shows for wearable eye.
Embodiment
Below in conjunction with accompanying drawing, specific works process of the present invention is described.
Fig. 1 is the schematic diagram of the present invention's complications expansion pressure beam optical waveguide device, and as shown in Figure 1, the present invention's complications expansion pressure beam optical waveguide device system composition comprises: coupling input prism 10, tortuous substrate 11, coupling output 12, image spread assembly 13, pressure beam assembly 14.
Coupling input prism 10 is mainly used in the optical signal from the external world in tortuous substrate 11, carrying out in the process be coupled, total reflection principle is mainly utilized to change light transmition direction, light wave transmits in tortuous substrate 11 under the condition of satisfied total reflection, in order to can as much as possible coupling light in tortuous substrate 11, light, before entering coupling input prism 10, needs to utilize collimation lens to collimate usually.
The shape of tortuous substrate 11 can be regarded as and be made up of multiple repetitive 111, and the upper base that each shape repeating champion is two isosceles trapezoids is connected formed shape.The visual field of the light signal be coupled in waveguide device for transmitting the light entered wherein, and is awarded amplification by tortuous substrate 11, ensures light wherein with the transmission of the form of total reflection simultaneously.
Coupling output 12, is mainly used to the optical signal propagated in substrate to go out substrate.Owing to meeting total reflection principle when light transmits in the substrate, for making light export from tortuous substrate 11, the reflection angle of light on the reflecting surface of tortuous substrate 11 end should be less than the angle of total reflection, and the angle of total reflection of such as BK7 glass is 42 °.Coupling output 12 is introduced for realizing above-mentioned condition, light is made to be less than the critical angle of total reflection by the reflection angle after the reflection of coupling output 12 in output face 122 thus to export by coupling output 12, in order to complete the output of light better, usually need to carry out coating film treatment on the reflecting surface 121 of coupling output 12.
Image spread assembly 13 forms the shape of isosceles trapezoid by the prism 131 of multiple parallelogram and at least one polygonal prism.For the light by coupling output 12, causing because the angle of divergence is excessive when directly observing only has local light can enter the pupil of observer, thus causes observing visual field too little, therefore needs to introduce image spread assembly 13, the image of coupling output 12 is launched, thus expands observation visual field.The image of coupling output 12 is expanded by image spread assembly 13 of the present invention, makes the similar level crossing of each prism 131, all can imaging output optical signal separately, thus overall expansion observes visual field.
Pressure beam assembly 14 is made up of multiple right-angled trapezium prism.Although the light wave after image spread assembly 13 is expanded contributes to the visual field expanding observer, but because the light wave after expansion can not the output face of overlay image expansion module 13 completely, thus cause there is dark space between image, make can not link up well between image, introduce the distribution that pressure beam assembly 14 makes uniform light for this reason.Light after image spread assembly 13 directly shines in air dielectric, the light entering air dielectric when entering pressure beam assembly 14 due to the change of refraction angle, thus pressure beam effect can be played, make the optics output end face being distributed in whole system of the uniform light of outgoing pressure beam assembly 14.
The job step of waveguide device of the present invention and exemplary application:
Fig. 2 is the light wave propagation schematic diagram of the present invention's complications expansion pressure beam optical waveguide device, and as shown in Figure 2, the lower surface refraction impinging perpendicularly on coupling input prism 10 from the light 22 of same light source and light 23 entering into coupling input prism 10.The reflecting surface 20 inputting prism 10 by being coupled is by coupling light in tortuous substrate 11, and light transmits in tortuous substrate 11 with total reflection.Tortuous substrate 11 can be regarded as and can be made up of the isosceles trapezoid prism that light transmition direction carries out accurately locating a series of, first the light 22 be coupled in tortuous substrate 11 contact with tortuous substrate 11 Tortuous Surface 29, collide through the reflection of the substrate surface 29 of tortuous substrate 11 and tortuous substrate 11 surface 24, iterative cycles like this is transferred to coupling output 12.Equally, first the light 23 be coupled in tortuous substrate 11 contact with substrate surface 26, and collide through the reflection of substrate surface 26 and substrate surface 28, again collide with substrate surface through substrate surface 28, iterative cycles like this is transferred to coupling output 12.In coupling output 12, light 22 and light 23 meet with the reflecting surface 121 of coupling output 12, are reflected to the output face 122 of coupling output 12, thus output in image spread assembly 13 and pressure beam assembly 14, finally output in the visual field of observer.
Fig. 3 is the image spreading assembly exploded view of waveguide device of the present invention, and Fig. 4 is the image spreading assembly constitutional diagram of waveguide device of the present invention.
As shown in Figure 3 and Figure 4, image spread assembly 13 is made up of the shape of isosceles trapezoid the prism 131 of multiple parallelogram and at least one polygonal prism.The upper base width of this isosceles trapezoid is identical with the width of the output face 122 of coupling output, the assembly unit prism 131 of image spread assembly 13 mainly expands through row the light from tortuous substrate, thus making each assembly unit prism 131 can imaging separately, the reflecting surface 42 of assembly unit prism 131 mainly completes the effect of reflecting and expanding in expanding.Utilizing total reflection principle, there is total reflection thus covering assemblies unit lower surface 44 at reflecting surface 42 in incident ray.In order to make incident ray be totally reflected on surface 42, assembly unit interface each other directly contacts, and does not need special gummed.Fig. 4 is that prism unit directly arranges later image spread assembly 13 mutually, due in actual applications, visual field size needed for reality or instrument size can be different, therefore the lower surface size of coupling output also can change accordingly, usually increase and decrease accordingly according to the element number of width to image spread assembly 13 of coupling output lower surface, to reach the best effect strengthening visual field.
Fig. 5 is single component units figure, Fig. 6 of the pressure beam prism assemblies of the present invention's complications expansion pressure beam optical waveguide device is the pressure beam prism assemblies overall diagram that the present invention's complications expand pressure beam optical waveguide device.As shown in Figure 5,6, pressure beam assembly 14 is formed primarily of multiple prism unit 50, can complete the distribution of the uniform light after expanding by prism unit 50.The upper surface 52 of prism unit 50 contacts with air dielectric, reflect when light contacts with upper surface 52, because light dredges from light to enter into optically denser medium, the angle theta of light and interface normal will reduce, utilize this principle can reach intensity redistributing in space to incident ray, when making the lower surface 54 of beam projecting prism unit 50, lower surface 54 can be covered uniformly.Thus effectively avoid the dark space between image.In Fig. 6, the quantity of prism unit 50 is identical with each quantity of polygonal prism with parallelogram prism 131 in Fig. 4, and the width of the right angle waist of prism unit 50 equals the width of parallelogram minor face, and both are with relationship one to one.Fig. 6 is the pressure beam assembly 14 of composition after prism unit gummed, in order to reach better pressure beam effect, need to adopt ultraviolet glue to each prism unit 50 trapezoidal on go to the bottom between glue together to avoid the existence of air gap.
Fig. 7 is the concrete application schematic diagram of of waveguide device of the present invention, as shown in Figure 7, in order to describe the course of work of waveguide device in detail, carrys out illustrated example below with design parameter:
With axial principal ray through row optical design, in order to meet the transmission direction of light in Fig. 7, each parameter meets pass and is:
α sur=2α outsur1
Wherein, β sur1be the angle of dotted line 113 in tortuous substrate lower surface and figure, this dotted line 113 is parallel with tortuous substrate axis 112, therefore uses β at this sur1identical with the effect of the angle using tortuous substrate lower surface and tortuous substrate axis 112 with definition angular relationship, because tortuous substrate is made up of at least one repetitive structure, therefore each corresponding lower surface of tortuous substrate is identical with axis 112 angulation.α surbe the angle of axial principal ray and tortuous substrate surface normal, in order to ensure that light can transmit in tortuous substrate, require α sur45 ° should be greater than.α outbe the base angle of coupling output prism, minimize condition, α in order to what meet waveguide condition and duct thickness out45 ° should be less than.
β sur2sur1
Wherein, β sur2be the angle of dotted line 114 in tortuous substrate top surface and figure, this dotted line 114 is parallel with tortuous substrate axis 112, therefore uses β at this sur1identical with the effect of the angle using tortuous substrate lower surface and tortuous substrate axis 112 with definition angular relationship, because tortuous substrate is made up of at least one repetitive structure, therefore each corresponding upper surface of tortuous substrate is identical with axis 112 angulation.Send two circular cone light when carrying out optical design to make optical axis is put thing there is identical expansion effect in the substrate, angle β must be ensured sur1and β sur2equal.
α outin
Wherein, α outit is the angle of coupling output prismatic reflection face and output face.In order to realize the object of waveguide and keep the constant of light transmission direction, usual α outand α inget identical angle, and avoid choosing 45° angle.
β osur2outsur-90
Wherein, β oit is the angle of axial principal ray and coupling output reflecting surface.
eoout-90°=γ
Wherein, γ is the angle expanding assembly emergent ray and outgoing component bottom plane normal.α eit is the pitch angle expanding assembly unit.The total reflection of cell surface, α is being expanded in order to realize light wave ecan not be too little, otherwise part light-wave energy will be caused to spill expand assembly unit.
n*sin(90°-α p)=sinθ
Wherein, as shown in Figure 5, θ is the angle of incident ray and pressure beam assembly surface normal, α pit is the inclination angle of pressure beam assembly.N is the refractive index of material.Select α powing to will ensure that beam projecting direction does not change and meets the reversible law of light path, α for this reason pangle can not be too large.
sin(θ-α p)=n*sin(γ)
Under meeting the prerequisite of above-mentioned relation, as α out=32 °, α sur=45 °, α e=75 °, time:
βsur1=βsur2=19°
αout=αin=32°
βo=6°
γ=22°
θ-α p=30°
Due to α pangle can not be too large, desirable
α p=30°
With above-mentioned parameter designing waveguide device, from the light 51 of the same light wave of light source 30 and light 52 collimation through collimation lens 53, impinge perpendicularly on the lower surface of coupling input 10, because light 51,52 is through the collimation of collimation lens, can reflects well and enter into coupling input 12.The reflection of 10 reflectings surface is inputted through overcoupling, light 51,52 is coupled and is input in tortuous substrate 11, in order to make light 51,52 lossless propagation in the substrate 11, the condition that incident angle is greater than the angle of total reflection must be met, otherwise along with light transmission in the substrate because refractive power is lost, finally cause the energy of coupling output substrate too little.The light being coupled into substrate 11 finally arrives coupling-out face 12 through the transmission of tortuous substrate waveguide.In order to make light wave export substrate, the angle of light and substrate surface must be made to be less than the cirtical angle of total reflection, adopting prism can change the principle in light transmition direction to change the angle of light and substrate surface for this reason.After light 51,52 and coupling output face 12 collide, reflex to the lower surface of coupling output 12, destroy the total reflection of light wave thus incide in expansion prism assemblies.Prism beam expander assembly is expanded to the light beam 51,52 of incidence through row, that each prism beam expander unit can imaging separately, thus reach the object expanding visual field, but cannot be evenly distributed on owing to expanding rear light beam the lower surface expanding assembly, therefore introduce pressure beam assembly.Light 51 and light 52 enter air dielectric after expanding the expanding of assembly, due to light enter optically denser medium from optically thinner medium time, refraction angle is less than incident angle, therefore can design corresponding prism to complete pressure beam effect, thus make homogenizer be distributed in pressure beam assembly exit surface.Finally, light 51 and light 52 go out to inject the observer visual field 54 from the lower surface of pressure beam assembly.
As shown in Figure 8, for the present invention's complications expansion pressure beam optical waveguide device is used for the schematic diagram of wearable glasses display.By assembly of the present invention is used for wearable display, the information that Shows Picture needing display can be watched on the one hand in real time, moreover do not adopt special diaphragm to stop entering of external scene light completely due to the assembly of this fermentation, therefore change the change simultaneously can observing outside scenery.
Embodiment effect and effect:
According to the complications expansion pressure beam optical waveguide device of the embodiment of the present invention, on the one hand due to the existence of tortuous substrate, make light signal can enter into the visual field of observer in the different angles of direction of observation, thus expand the visual field of observer, simultaneously due to ghost problems that the existence of tortuous substrate can avoid the change due to light transmition direction to bring effectively.
On the other hand, owing to present invention uses the structure of tortuous substrate, make light can carry out complications transmission wherein, therefore under the prerequisite not changing visual field, on volume, there is obvious reduction to become light and handy, and owing to adopting tortuous shape, material contained by itself reduces, and alleviates the weight of whole imaging system.
In addition because assembly of the present invention does not adopt special diaphragm to stop entering of external scene light completely, the change of outside scenery can therefore be observed while the information of viewing display in real time.
Optical waveguide device basic module of the present invention is made up of five parts, can expand accordingly for concrete application to the ingredient of waveguide device of the present invention, thus further elevator system is in the potentiality of application aspect.This kind of optical system not only may be used for wearable display, all has good application potential in spread illumination, auto navigation display and mobile phone display simultaneously.
Certainly, the angle at Sur1 and Sur2 two angles in the present invention is not limited only to 19 °, can carry out total reflection wherein transmit as long as meet incident ray.
α in the present invention esize be also not limited only in embodiment 75 °, its scope is 45 ° ~ 90 °, as long as can ensure that light can realize being totally reflected in image spreading assembly.

Claims (4)

1. a Zigzag optical waveguide device, is characterized in that, comprising:
Light wave coupling input prism, light wave transmissions tortuous substrate, light wave coupling output prism, image spread assembly and light wave pressure beam assembly,
Wherein, described light wave coupling input prism is connected with the tortuous substrate of described light wave transmissions, is inputed to described light wave transmissions complications substrate for the light signal that receives from the external world,
The tortuous substrate of described light wave transmissions is made up of at least one repetitive, and the shape of described repetitive is the isosceles trapezoid that the identical and upper base of two sizes is connected, and the shape of described isosceles trapezoid can make light signal carry out total reflection wherein to transmit,
Described light wave coupling output prism is connected with the tortuous substrate of described light wave transmissions, is exported by the described light signal of being come by the tortuous substrate transport of light wave transmissions,
Described image spread assembly is connected with described light wave coupling output prism, the global shape of described image spread assembly is isosceles trapezoid, described isosceles trapezoid is made up of the identical parallelogram prism of multiple size and shape and at least one polygonal prism, described image spread assembly launches the described light signal that described light wave coupling output prism exports
Described light wave pressure beam assembly receives the described light signal from described image spread assembly and makes on its output end face being evenly distributed in described pressure beam assembly,
Described light wave pressure beam assembly is made up of multiple right-angled trapezium prism close-packed arrays that size and shape is identical, and the right angle kidney chop of described multiple right-angled trapezium is listed on straight line, and the upper base of described multiple right-angled trapezium prism is all towards same direction,
Described parallelogram prism in described right-angled trapezium prism and described image spread assembly and polygonal prism are one-to-one relationship, and the width of the right angle waist of described right-angled trapezium prism is equal with the width of the minor face of described parallelogram prism,
Wherein, the tortuous lower surface of substrate of described light wave transmissions of described repetitive and the angle of the axis of described tortuous substrate between 10 ° ~ 20 °, and meet following relation:
α sur=2α outsur1
Wherein, β sur1the angle of the axis of tortuous substrate lower surface and described tortuous substrate, α surthe angle of axial principal ray and described tortuous substrate surface normal, α surbe greater than 45 °, α outthe angle of described coupling output prismatic reflection face and output face, α out45 ° should be less than.
2. Zigzag optical waveguide device according to claim 1, is characterized in that:
Wherein, the light wave coupling input input face of prism and the angle of reflecting surface are less than 45 °, and equal with the angle of output face with the reflecting surface of light wave coupling output prism.
3. Zigzag optical waveguide device according to claim 1, is characterized in that:
Wherein, the angle of at 45 ° ~ 90 ° of going to the bottom of the long limit of described parallelogram prism and described isosceles trapezoid, and meet following relation:
eoout-90°=γ
Wherein, γ is the angle of the emergent ray of image spread assembly and the output surface normal of light wave coupling output prism, α ethe long limit of described parallelogram prism and the angle of going to the bottom of described isosceles trapezoid, α outthe reflecting surface of coupling output prism and the angle of output face, β oit is the angle of axial principal ray and coupling output reflecting surface.
4. Zigzag optical waveguide device according to claim 1, is characterized in that:
Wherein, the oblique waist of described right-angled trapezium prism meets formula with the angle of going to the bottom:
n*sin(90°-α p)=sinθ
Wherein, θ is the angle of incident ray and described light wave pressure beam assembly surface normal, and n is the refractive index of material, α pthe oblique waist of the described right-angled trapezium prism in described light wave pressure beam assembly and the angle of going to the bottom.
CN201310270126.6A 2013-06-28 2013-06-28 Zigzag optical waveguide device Expired - Fee Related CN103336331B (en)

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CN104536140A (en) * 2015-01-24 2015-04-22 上海理湃光晶技术有限公司 Folding extension display optical device based on prism coupling
CN104536139B (en) * 2015-01-25 2017-06-06 上海理湃光晶技术有限公司 A kind of tapered planar wave guide optics of prism-coupled
CN104536137A (en) * 2015-01-25 2015-04-22 上海理湃光晶技术有限公司 Folding expanding optical waveguide device for image display
CN104536136A (en) * 2015-01-25 2015-04-22 上海理湃光晶技术有限公司 Folding collimating optical waveguide device for display

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CN1439901A (en) * 2002-02-19 2003-09-03 欧姆龙株式会社 Optical fiber waveguide, optical component and photoswitch
CN201540945U (en) * 2009-07-22 2010-08-04 电子科技大学 Serpentine groove guide slow-wave line
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