CN108415109A - A kind of optics retroreflector and reflector array - Google Patents
A kind of optics retroreflector and reflector array Download PDFInfo
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- CN108415109A CN108415109A CN201810089252.4A CN201810089252A CN108415109A CN 108415109 A CN108415109 A CN 108415109A CN 201810089252 A CN201810089252 A CN 201810089252A CN 108415109 A CN108415109 A CN 108415109A
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- optics
- retroreflector
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- major axes
- axes orientation
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/12—Reflex reflectors
- G02B5/122—Reflex reflectors cube corner, trihedral or triple reflector type
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention discloses a kind of optics retroreflector and reflector arrays, are made of anisotropic medium, and shape can be adjusted as needed.Used anisotropic medium tool there are one major axes orientation, along on major axes orientation dielectric constant and magnetic conductivity it is very big, and the dielectric constant and magnetic conductivity on major axes orientation are intended to zero.The plane of incidence and exit facet of device are all planes, between be connected by this high anisotropy medium with major axes orientation.As long as the point distribution on the plane of incidence and exit facet meets the inverse relation of 180 degree angle, which can be realized the effect of optics retroreflector, i.e., the light wave being incident at a certain angle on the device will be reflected back according to original opposite direction.
Description
Technical field
The invention belongs to optics retroreflectors.
Background technology
It refers to the phenomenon that reflection light is according to being propagated with incident light exactly opposite direction to return reflection (reflex reflection).Optics
Retroreflector is in optical measurement, warning mark, highway traffic safety product (such as the reflective membrane for making traffic sign) and a
The numerous areas such as the people's traffic safety product reflective vest of worker's dress of keeping a public place clean (such as traffic police) have important application.Tradition
Optics retroreflector be mainly based upon geometric optics method design, can be mainly divided into prism of corner cube retroreflector
【1,2】With two class of opal retroreflector【3,4】.Retroreflector on vehicle is formed by means of angle prism array, can be with
By incident light negative direction retroeflection, and then serve as a warning.In angle prism array, each reflecting unit is by three
Mutually perpendicular face constitutes concave prism of corner cube.When people penetrates light perpendicular to reflector element, reflected light is most strong (efficiency highest), changes
Changing incident angle of light, reflective area reduce, and intensity of light reflection weakens.Its effective operating angle can only be from -45 degree to+45 degree.Separately
A kind of outer cat's eye reflex device is to receive the eyes of cat when being irradiated by light at night, will produce very strong reflective inspiration.Mesh
The retroreflector of preceding this cat-eye type is mainly to be realized by means of bead array.In order to can effectively consolidate in body surface
Fixed and protective glass pearl array, around be all filled with a lot of other coatings, this makes the effect of the retroreflector of this cat-eye type
Rate and effective operating angle are nor highly desirable.
【1】Scholl,M.S.Ray trace through a corner-cube retroreflector with
complex reflection coefficients.JOSAA,12(7),1589-1592(1995).
【2】Eckhardt,H.D.Simple model of corner reflector phenomena.Applied
Optics,10(7),1559-1566(1971).
【3】Takatsuji,T.,Goto,M.,Osawa,S.,Yin,R.,&Kurosawa,T.Whole-viewing-
angle cat's-eye retroreflector as a target of laser trackers.Measurement
Science and Technology,10(7),N87(1999).
【4】Biermann,M.L.,Rabinovich,W.S.,Mahon,R.,&Gilbreath,G.C.Design and
analysis of a diffraction-limited cat’s-eye retroreflector.Optical
Engineering,41(7),1655-1660(2002).
Invention content
1. the purpose of the present invention.
In order to solve, the existing optics time effective operating angle of reflection technology is limited and efficiency is limited and then proposes one kind
By means of the retroreflector and reflector array of the efficient wide operating angle of high anisotropy media implementation.
2. the technical solution adopted in the present invention.
The present invention proposes a kind of optics retroreflector, is made of anisotropic medium, used each anisotropy
Medium tool there are one major axes orientation, along on major axes orientation dielectric constant and magnetic conductivity it is very big, on major axes orientation
Dielectric constant and magnetic conductivity be intended to zero, between by this high anisotropy medium with major axes orientation be connected
It connects, the plane of incidence and exit facet are all planes, and the point on the plane of incidence and exit facet corresponds, and distribution meets the anti-of 180 degree angle
Transfer the registration of Party membership, etc. from one unit to another, i.e., the light wave being incident at a certain angle on the device will be reflected back according to original opposite direction.
Further specific implementation mode, by two symmetrical settings of isosceles right triangle anisotropic medium, first
The major axes orientation of anisotropic medium is+45 degree relative to bottom edge, and the major axes orientation that second area anisotropic medium is is opposite
It is -45 degree in bottom edge, the working face of device is the bottom edge of two anisotropic mediums composition, first area anisotropic medium bottom
Point on side meets the reversion correspondence of 180 degree angle with the point on second area anisotropic medium bottom edge.
Further specific implementation mode, two anisotropic mediums are respectively a quarter circle structure, two respectively to
Anisotropic medium is disposed proximate to composition semicircular structure on one side, and the major axes orientation of two anisotropic mediums is along the tangential of semicircle
Direction, the working face of device are the bottom edge of two anisotropic mediums composition, the point on the anisotropic medium bottom edge of first area
Meet the reversion correspondence of 180 degree angle with the point on second area anisotropic medium bottom edge.
Further specific implementation mode, two right angled triangles and an isosceles triangle anisotropic medium are constituted
Flat rectangular configuration reflector, the anisotropic medium major axes orientation in two right angled triangle regions is along the directions y, isoceles triangle
For the major axes orientation of shape high anisotropy medium along the directions x, the working face of device is the bottom of two anisotropic mediums composition
Side, the point on the anisotropic medium bottom edge of first area meet 180 degree angle with the point on second area anisotropic medium bottom edge
The reversion correspondence of degree.
Further specific implementation mode, incident light beam strikes angle relative to isosceles triangle center line be -80 degree to+
80 degree.
The present invention proposes a kind of optics retroreflector array, and using the optics retroreflector, design as desired is led
Axis direction carries out array combination, and constitute compact large area returns reflective array.
Further specific implementation mode forms a square back-to-back using the optics retroreflector of isosceles triangle
360 degree return is carried out to reflect.
3. beneficial effects of the present invention.
(1) effective operating angle range of device of the present invention can effectively work from -80 degree to+80 degree greatly very much.Very
The operating angle of 360 degree of the total space can also extremely be extended further to
(2) efficiency of device of the present invention is very high.It is spent from -60 to+60 when incident light beam strikes angle and spends the work for being incident on device
When making on face, which can realize returns reflection efficiency higher than 70%.Even if incident angle from -80 degree to -60 degree (or
+ 60 degree to+80 degree) return reflection efficiency can be higher than 50%.
(3) shape of device of the present invention can be designed to arbitrarily, for example can be designed very thin.
Description of the drawings
Fig. 1 is 1 structure chart of the embodiment of the present invention.
Fig. 2 is 2 structure chart of the embodiment of the present invention.
Fig. 3 is 3 structure chart of the embodiment of the present invention.
Fig. 4 is that the incident angle of the embodiment of the present invention 1 changes relational graph.
Specific implementation mode
In order to enable the auditor especially public of Patent Office that the technical spirit of the present invention is more clearly understood and have
Beneficial effect, applicant will elaborate by way of examples below, but be not to this hair to the description of embodiment
The limitation of bright scheme, the made only formal but not substantive equivalent transformation of any design according to the present invention are all answered
It is considered as technical scheme of the present invention scope.
Embodiment 1
Optics retroreflector of the present invention, is made of anisotropic medium.Anisotropic medium used herein
There are a major axes orientations, very big along the dielectric constant and magnetic conductivity of medium on major axes orientation, and perpendicular to major axes orientation
The dielectric constant and magnetic conductivity of upper medium are intended to zero.The plane of incidence and exit facet of device are all planes, between by this
High anisotropy medium with major axes orientation is connected.As long as the point distribution on the plane of incidence and exit facet meets 180 degree angle
The effect of optics retroreflector can be realized in the inverse relation of degree, the device.Other regions other than device are all air, can be with
It uses in normal circumstances, it is applied widely.After on ambient or light-wave irradiation to the working face of device, you can in Kuan Jiao
It spends in range (- 80 degree to+80 degree) and realizes high efficiency retrodirective reflection.
(two-dimensional section figure) as shown in Figure 1, a kind of optics retroreflector proposed by the present invention, by isosceles right triangle
The structure that two anisotropic mediums are disposed proximate to form on one side is made of the isosceles of (1-1) and (1-2) anisotropic medium
Right angled triangle.For anisotropic medium used herein there are a major axes orientation, the dielectric along medium on major axes orientation is normal
Number and magnetic conductivity are very big, and the dielectric constant of medium and magnetic conductivity are intended to zero on major axes orientation.In region (1-1)
Anisotropic medium major axes orientation along+45 degree (relative to horizontal x-axis), the master of the anisotropic medium in region (1-2)
Axis direction is along -45 degree (relative to horizontal x-axis).Other regions are all air.The working face of device is S1 and S2.
Optics retroreflector proposed by the present invention, when incident light beam strikes angle is incident from -60 degree to+60 degree (relative to y-axis)
When on to the working face of device, which can realize returns reflection efficiency higher than 70%.Even if incident angle is spent from -80
50% can be higher than by returning reflection efficiency to -60 degree (or+60 degree to+80 degree).The plane of incidence and exit facet of device are all flat
Face, between be connected by this high anisotropy medium with major axes orientation.As long as on the plane of incidence and exit facet
Point distribution meets the inverse relation of 180 degree angle, which can be realized the effect of optics retroreflector, and the shape of device is unlimited
In isosceles right triangle shown in figure.
S1 and S2 is the working surface (being the plane of two docking) of device.It is each by the height with main shaft between S1 and S2
Anisotropy medium (1-1) and (1-2) connection.This high anisotropy medium, along the dielectric constant of medium on major axes orientation
It is very big with magnetic conductivity, and the dielectric constant of medium and magnetic conductivity are intended to zero on major axes orientation.The master of medium (1-1)
Axis direction is along+45 degree (relative to x-axis), and the major axes orientation of medium (1-2) is along -45 degree (relative to x-axis).Pay attention to here
Medium is all isosceles right triangle just, but its shape can be adjusted flexibly when actual design (at this time major axes orientation point
Cloth can be also varied from).This high anisotropy medium (1-1) and (1-2) with major axes orientation are equivalent to fixed
Point on surface S1 and S2 is established one-to-one relationship by " waveguide " to guidance quality.And the main shaft square arranged by Fig. 1
To anisotropic medium, the point distribution on surface S1 and S2 meets the reversion correspondence of 180 degree angle just.At this point, whole
A device can generate back the light being incident on working face the effect of reflection.
The corresponding devices of Fig. 1 return reflection efficiency as the relationship of the change of incident angle is as shown in Figure 4.Pay attention to device sheet
Body is symmetrical along y-axis.Therefore, we only depict the case where incident angle is spent from 0 degree to+80 in analysis efficiency.Separately
Outside, a kind of method that can further expand the effective operating angle range of device is provided, is exactly by 4 isosceles right angles three in Fig. 1
Angular device back-to-back reflect by one square of composition, effective return that 360 degree of the total space may be implemented.
Here provide a kind of scheme for realizing this high anisotropy medium (specific implementation is without being limited thereto)：Fig. 1
In the main shaft of (1-1) can be by along the anisotropic medium of+45 degree (relative to x-axis), along the metal plank in+45 degree directions
It is staggered realization with zero refraction materials；The anisotropic medium that the main shaft of (1-2) spends (relative to x-axis) along -45 in Fig. 1
Can be by, it is staggered realization along the metal plank and zero refraction materials in -45 degree directions.Pay attention to metal plank and zero refraction
The unit size of rate composition is required 1/10th or so of operation wavelength.This structure is directed to the design of TM polarized waves.
Embodiment 2
Optics retroreflector proposed by the present invention, the distribution for connecting the high anisotropy medium between S1 and S2 completely may be used
Otherwise, to realize back that the key of reflection is to meet the point distribution on surface S1 and S2 into the reversion of 180 degree angle
Correspondence.As long as it should be pointed out that meeting the reversion correspondence pass that the point distribution on the faces S1 and S2 meets 180 degree angle just
Retroreflector can be realized in system, and the shape of specific retroreflector might not be the shape for the isosceles right triangle that Fig. 1 is provided
Shape.
Such as the optics retroreflector of the semicircular structure in Fig. 2, the master of high anisotropy medium (being marked by 2-1) at this time
Axis direction is the tangential direction along semicircle.
Embodiment 3
Reflecting effect is similarly returned as the flat rectangular configuration optics retroreflector in Fig. 3 can also be realized.3-1,3-2 at this time
High anisotropy medium major axes orientation in region along the directions y, and in the regions 3-3 high anisotropy medium main shaft square
To along the directions x.
Embodiment 4
Any optics retroreflectors of above-described embodiment 1-3 can line up array structure use, constitute optics and return
Reflective array, and then realize time reflecting effect of compact large area.
In the description of the present invention, it is to be understood that, the term of indicating position or position relationship is based on shown in attached drawing
Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, do not indicate or imply the indicated equipment
Or element must have a particular orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be that machinery connects
It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Claims (7)
1. a kind of optics retroreflector, it is characterised in that：It is made of anisotropic medium, used each anisotropic medium
Tool there are one major axes orientation, along on major axes orientation dielectric constant and magnetic conductivity it is very big, Jie on major axes orientation
Electric constant and magnetic conductivity are intended to zero, between be connected by this high anisotropy medium with major axes orientation, enter
It is plane to penetrate face and exit facet all, and the point on the plane of incidence and exit facet corresponds, and the reversion that distribution meets 180 degree angle is closed
System, i.e., the light wave being incident at a certain angle on the device will be reflected back according to original opposite direction.
2. optics retroreflector according to claim 1, it is characterised in that：By two isosceles right triangle anisotropy
The major axes orientation of medium (1-1,1-2) symmetrical setting, the first anisotropic medium (1-1) is spent relative to bottom edge for+45, and second
Region anisotropic medium is that the major axes orientation of (1-2) relative to bottom edge be -45 degree, and the working face of device is two anisotropy
The bottom edge of medium composition, the point on the anisotropic medium bottom edge of first area and the point on second area anisotropic medium bottom edge
Meet the reversion correspondence of 180 degree angle.
3. optics retroreflector according to claim 1, it is characterised in that：Two anisotropic mediums (2-1,2-2) point
Not Wei a quarter circle structure, two anisotropic mediums be disposed proximate on one side composition semicircular structure, two anisotropy
The major axes orientation of medium is the tangential direction along semicircle, and the working face of device is the bottom edge of two anisotropic mediums composition,
Point on the anisotropic medium bottom edge of first area meets 180 degree angle with the point on second area anisotropic medium bottom edge
Invert correspondence.
4. optics retroreflector according to claim 1, it is characterised in that：Two right angled triangles and an isosceles three
Angular anisotropic medium constitutes flat rectangular configuration reflector, the anisotropic medium main shaft square in two right angled triangle regions
To along the directions y, for the major axes orientation of isosceles triangle high anisotropy medium along the directions x, the working face of device is two
The bottom edge of anisotropic medium composition, the point on the anisotropic medium bottom edge of first area and second area anisotropic medium bottom
Point on side meets the reversion correspondence of 180 degree angle.
5. optics retroreflector according to claim 1, it is characterised in that：Incident light beam strikes angle is relative to isoceles triangle
The center line of shape is -80 degree to+80 degree.
6. a kind of optics retroreflector array, it is characterised in that：Using any optics retroreflector of claim 1, press
Array combination is carried out according to Demand Design major axes orientation, constitute compact large area returns reflective array.
7. optics retroreflector array according to claim 6, it is characterised in that：Use the optics described in claim 2
The retroreflector square time reflection for carrying out 360 degree of composition one back-to-back.
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| CN201810089252.4A CN108415109B (en) | 2018-01-30 | 2018-01-30 | Optical retroreflector and reflector array |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794589A (en) * | 2019-08-15 | 2020-02-14 | 浙江大学 | Super-resolution imaging method, imaging device and device based on zero-space medium |
| CN111290060A (en) * | 2020-04-02 | 2020-06-16 | 太原理工大学 | Novel light beam deflector with fixed deflection angle |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1157929A (en) * | 1996-10-31 | 1997-08-27 | 汪凌志 | Optical element for controling surface image changing mirror surface reflection and its manufacturing method |
| US20040004765A1 (en) * | 2002-06-27 | 2004-01-08 | Ichiro Ihara | Corner cube array and method of making the corner cube array |
| JP2004326083A (en) * | 2003-04-09 | 2004-11-18 | Seiko Instruments Inc | Method for manufacturing mirror, and mirror device |
| CN101392103A (en) * | 2007-09-19 | 2009-03-25 | Jds尤尼弗思公司 | Anisotropic magnetic flakes |
| CN102738592A (en) * | 2011-03-31 | 2012-10-17 | 深圳光启高等理工研究院 | Meta-material for realizing deflection of electromagnetic waves |
| CN102800987A (en) * | 2011-06-03 | 2012-11-28 | 深圳光启高等理工研究院 | Metamaterial reflecting mirror |
| CN203587889U (en) * | 2013-10-03 | 2014-05-07 | 浙江大学 | Electromagnetic wave stealth device |
| US20140243483A1 (en) * | 2013-02-26 | 2014-08-28 | California Institute Of Technology | Chiral Polymers for the Self-Assembly of Photonic Crystals |
-
2018
- 2018-01-30 CN CN201810089252.4A patent/CN108415109B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1157929A (en) * | 1996-10-31 | 1997-08-27 | 汪凌志 | Optical element for controling surface image changing mirror surface reflection and its manufacturing method |
| US20040004765A1 (en) * | 2002-06-27 | 2004-01-08 | Ichiro Ihara | Corner cube array and method of making the corner cube array |
| JP2004326083A (en) * | 2003-04-09 | 2004-11-18 | Seiko Instruments Inc | Method for manufacturing mirror, and mirror device |
| CN101392103A (en) * | 2007-09-19 | 2009-03-25 | Jds尤尼弗思公司 | Anisotropic magnetic flakes |
| CN102738592A (en) * | 2011-03-31 | 2012-10-17 | 深圳光启高等理工研究院 | Meta-material for realizing deflection of electromagnetic waves |
| CN102800987A (en) * | 2011-06-03 | 2012-11-28 | 深圳光启高等理工研究院 | Metamaterial reflecting mirror |
| US20140243483A1 (en) * | 2013-02-26 | 2014-08-28 | California Institute Of Technology | Chiral Polymers for the Self-Assembly of Photonic Crystals |
| CN203587889U (en) * | 2013-10-03 | 2014-05-07 | 浙江大学 | Electromagnetic wave stealth device |
Non-Patent Citations (1)
| Title |
|---|
| YIMIN LOU: "《Analysis and fabrication of Corner cube array based on laser direct writing technology》", 《APPLIED OPTICS》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794589A (en) * | 2019-08-15 | 2020-02-14 | 浙江大学 | Super-resolution imaging method, imaging device and device based on zero-space medium |
| CN111290060A (en) * | 2020-04-02 | 2020-06-16 | 太原理工大学 | Novel light beam deflector with fixed deflection angle |
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| CN108415109B (en) | 2021-07-13 |
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