CN204740362U - Beam direction follows free adjustable fluid lenticule of dimension - Google Patents
Beam direction follows free adjustable fluid lenticule of dimension Download PDFInfo
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- CN204740362U CN204740362U CN201520390348.6U CN201520390348U CN204740362U CN 204740362 U CN204740362 U CN 204740362U CN 201520390348 U CN201520390348 U CN 201520390348U CN 204740362 U CN204740362 U CN 204740362U
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- fluid
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- sandwich layer
- microcavity
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Abstract
The utility model provides a beam direction follows free adjustable fluid lenticule of dimension, including the fluid fiber waveguide, the incident laser ware, face and outflow fluid container are received to the light beam, it has the runner that is used for bearing the weight of the microfluid to open in the fluid fiber waveguide, the runner includes a sandwich layer fluid entry, the covering fluid entry of two symmetries, the fluid issuing of fluid microcavity and two symmetries, sandwich layer fluid entry, covering fluid entry all communicates with the entrance side of fluid microcavity, outlet side and two fluid issuings of fluid microcavity are connected, fluid issuing and outflow fluid container intercommunication, coaxial the arranging of face is received to incident laser ware and light beam, the the central axis direction of microcavity is unanimously followed with the parallel just direction of fluid flow direction to axis between them, the installation is used for adjusting the stream speed adjusting festival equipment of fluid speed in sandwich layer fluid entry and the covering fluid entry. The utility model discloses can be dynamic harmonious, the integrated level is high, simple structure, convenient, the low cost of preparation.
Description
Technical field
The utility model relates to integrated-type optical device, especially a kind of tunable lenticule in focused ray direction of integrated-type.
Background technology
The shaping technique of light beam includes the regulation and control such as focusing, collimation, deflection, beam splitting, coupling to light beam, and the index distribution of regulation and control optical medium just can realize the control such as focusing, collimation, deflection, beam splitting to incident beam easily usually.Micro-fluidic optical technology fast-developing is in recent years the new method we providing beam shaping, its principle to flow control (the Mao X realized light micro-scale by controlling fluid, Lin SS, Lapsley MI, Shi J, JuluriBK, Tunable liquid gradient refractive index (L-GRIN) lens with twodegrees of freedom, Lab.Chip., 9 (2009): 2050-2058, there is the tunable liquid gradual index lens of 2 degree of freedom regulating powers, laboratory on sheet, 9 (2009): 2050-2058, Yang Y, Liu AQ, Chin LK, Zhang XM, Tsai DP, LinCL, Lu C, Wang GP, Zheludev NI, Optofluidic waveguide as atransformation optics device for lightwave bending and manipulation, Nat.Commun., 3 (2012): 651-657, the transfer optics based on optofluidic waveguide bending for light wave and control, nature-communication, 3 (2012): 651-657).Given this, microflow control technique and system can be introduced into beam direction along in the free adjustable lenticular designing and making of fluid of one or more dimension.First the diffusion in the fluid that refractive index is lower of fluid that a kind of refractive index is higher and convection current is utilized, form a kind of optical waveguide of controllable index distribution, then carry out tuning light wave in the deflection of exit end and focusing by the index distribution of dynamic regulation optical waveguide, obtain the effect of one-dimensional deflection and focusing.
There is no beam direction at present along the free adjustable lens arrangement of one or more dimension, the adjustment of beam direction needs to be realized by external accurate machine construction, therefore structure is very complicated, size large, and cannot realize the dynamically adjustable continuously of beam direction.Be difficult to the active demand meeting field of photodetection and light sensory field.For meeting the active demand of application, the utility model proposes the lenticule that a kind of novel beam direction combining integrated-type and tunable function is adjustable, namely based on the beam direction of optical waveguide along the freely adjustable fluid lenticule of a dimension.
Summary of the invention
In order to overcome the external accurate machine construction of existing lenticular needs to realize that lens beam direction is tuning, complex structure, bulky dimensions, making difficulty, regulation and control very flexible, deficiency that integrated level is low, the utility model provides a kind of dynamic is tuning, integrated level is high, structure is simple, easy to make, with low cost beam direction along the freely adjustable fluid lenticule of a dimension.
The utility model solves the technical scheme that its technical matters adopts:
A kind of beam direction is along the free adjustable fluid lenticule of a dimension, comprise optical waveguide, incident laser device, beam reception face and effluent fluid reservoir, described optical waveguide has the runner for carrying microfluid, described runner comprises a sandwich layer fluid intake, two symmetrical covering fluid intakes, fluid microcavity and two symmetrical fluid egress points, described sandwich layer fluid intake, covering fluid intake all with the inlet side communication of described fluid microcavity, the outlet side of described fluid microcavity is connected with two fluid egress points, described fluid egress point is communicated with effluent fluid reservoir, described incident laser device and beam reception face coaxially arranged, described incident laser device and direction consistent central axial direction along microcavity parallel with fluid flow direction with the axis in beam reception face, described sandwich layer fluid intake and the interior flow rate regulating device installed in order to regulate fluid velocity of covering fluid intake, described flow rate regulating device control sandwich layer fluid and covering rate of flow of fluid are to realize beam direction along the free adjustable effect of a dimension,
Only there is diffusion and convective motion each other in described sandwich layer fluid and covering fluid, covering fluid ring is around sandwich layer fluid, described sandwich layer fluid and covering fluid are two kinds of fluids with different refractivity, and described sandwich layer fluid and covering fluid flow and jointly form optical waveguide in fluid microcavity.
Further, described flow rate regulating device is the peristaltic pump injecting fluid.
Further again, described covering fluid refractive index is higher than described sandwich layer fluid refractive index.
Technical conceive of the present utility model is: utilize and form the sandwich layer of optical waveguide and the diffusion of covering two kinds of fluids and convection process dynamic regulation waveguide index, affect two kinds of fluid diffusion and convection processes also so that the principal element affecting optical waveguide index distribution comprise the flow velocity of sandwich layer and covering fluid and the selection of different refractivity microfluid.If rate of flow of fluid is lower in time-limited micro-raceway groove, then diffusional effect is obvious, be now the cross-sectional direction of microcavity or all will consider the impact of diffusional effect on concentration gradient along fluid flow direction, and the diffusion of sandwich layer fluid in the covering fluid graded index optical waveguide theoretical foundation that can realize just.Further, different from the gradual index lens in the past based on micro-fluidic optical technology, allow the flow velocity of side covering be greater than opposite side, form the distribution of offsets of the higher core region of refractive index, and carry out deflection and the focusing of light beam with this.Therefore, not only effectively can be controlled the space distribution of fluid diffusion concentration and refractive index by the flow velocity and type of fluid controlling sandwich layer fluid and covering fluid, deflection and the focusing effect of light wave can also be controlled.
The beneficial effects of the utility model are mainly manifested in: 1, based on the beam shaping method of micro-fluidic optical technology, fluid optical waveguide structure is formed with the convection current between two kinds of fluids and diffusion process, by controlling flow velocity and the type of fluid of sandwich layer and covering fluid, flexible and changeable index distribution can be obtained, realize the tunable lenticule of focus direction, and the angle of deflection and focal length can regulate in real time; 2, by the beam direction tunable lenticule of utility model based on optical waveguide, a kind of novel beam direction having integration and tunable function concurrently can be built along the freely adjustable fluid lenticule of a dimension; 3, direction of beam propagation is along lenticular central shaft liquid flow direction, effectively ensure that the adjustability of graded--index planar waveguides to lenticule beam direction; 4, compared with traditional beam direction regulate and control method, have and do not need external mechanical mechanism, single lenticule can realize the advantage of beam direction dynamic adjustments, and has the advantages such as integrated level is high, structure is simple, easy to make, with low cost.
Accompanying drawing explanation
Fig. 1 is that the beam direction of the utility model based on optical waveguide is along the free adjustable lenticular schematic diagram of fluid of a dimension.
Fig. 2 is the utility model based on the beam direction of optical waveguide along the cavity schematic diagram of optical waveguide carrying microfluid in the freely adjustable fluid lenticule of a dimension.
Fig. 3 keeps both sides covering rate of flow of fluid identical, along the index distribution of fluid flow direction diverse location cross-section.
When Fig. 4 is both sides covering rate of flow of fluid difference, along the index distribution of fluid flow direction diverse location cross-section.
Fig. 5 changes side covering rate of flow of fluid, and the center high index of refraction realizing index distribution deflects to side, and then realizes the deflection of beam direction to side.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
With reference to Fig. 1 ~ Fig. 5, a kind of beam direction is along the free adjustable fluid lenticule of a dimension, comprise optical waveguide 1, incident laser device 2, beam reception face 3 and effluent fluid reservoir 4, described optical waveguide 1 has the runner for carrying microfluid, described runner comprises a sandwich layer fluid intake 5, two symmetrical covering fluid intakes 6, fluid microcavity 7 and two symmetrical fluid egress points 8, described sandwich layer fluid intake 5, covering fluid intake 6 all with the inlet side communication of described fluid microcavity 7, the outlet side of described fluid microcavity 7 is connected with two fluid egress points 8, described fluid egress point 8 is communicated with effluent fluid reservoir 4, described incident laser device 2 and described beam reception face 3 coaxially arranged, described incident laser device is consistent with fluid flow direction with the axis in described beam reception face, described sandwich layer fluid intake 5 and the interior flow rate regulating device installed in order to regulate fluid velocity of covering fluid intake 6, described flow rate regulating device control sandwich layer fluid and covering rate of flow of fluid are to realize beam direction along the free adjustable effect of a dimension,
Only there is diffusion and convective motion each other in described sandwich layer fluid and covering fluid, covering fluid ring is around sandwich layer fluid, described sandwich layer fluid and covering fluid are two kinds of fluids with different refractivity, described sandwich layer fluid and covering fluid flow in fluid microcavity, jointly form optical waveguide.
Further, described flow rate regulating device is the peristaltic pump injecting fluid, certainly, also can adopt other flow rate regulating device.
Further again, described covering fluid refractive index is higher than described sandwich layer fluid refractive index.
The beam direction of the present embodiment is along the free adjustable fluid lenticule of a dimension, and the method realizing light wave beam splitting comprises the following steps:
(1) only there is diffusion and convective motion (sandwich layer fluid and covering fluid chemical reaction do not occur each other) each other in described sandwich layer fluid and covering fluid, covering equal flows ground is around sandwich layer fluid, described sandwich layer fluid and covering fluid are two kinds of fluids with different refractivity, described sandwich layer fluid and covering fluid flow in fluid microcavity, jointly form optical waveguide;
(2) laser beam of setting wavelength is incided described optical waveguide by described incident laser device, and direction of beam propagation is consistent with fluid flow direction, and described beam reception face receives the light beam exported after optical waveguide;
(3) by selecting microfluid kind, the refractive index of refractive index higher than described covering fluid of described sandwich layer fluid is controlled;
(4) by regulating rate of flow of fluid, controlling the space distribution of fluid diffusion process and refractive index, realizing the focusing of light beam and the beam direction free deflection along a dimension.
In the present embodiment, in described step (3), by selecting the kind of sandwich layer fluid and covering fluid, and in described step (4), effectively can be controlled the process of diffusion and convection current by the flow velocity controlling sandwich layer fluid and covering fluid, thus control the space distribution of fluid diffusion and refractive index; Specific as follows:
1) impact of flow velocity refractive index distribution, keep other parameter constants, select the index distribution along fluid flow direction diverse location cross-section, its flow velocity is sandwich layer (Q
core) and left (Q
left) right bag (Q
right) laminar flow speed is 5000pL/s.
2) impact of the different refractive index distribution of both sides covering flow velocity, condition previously discussed is the situation of sandwich layer flow velocity flow velocity identical with both sides covering, and the result that this flow conditions obtains is the center of refractive index center at fluid microcavity.If keep the covering fluid of side constant, change opposite side covering rate of flow of fluid, then can regulate the index distribution of optical waveguide more neatly, obtain along the asymmetric index distribution of optical axis, and then the deflection of light beam can be regulated and controled.Same selection along fluid flow direction diverse location cross-section index distribution as a reference, keep Q
core=Q
right=2500pL/s, changes Q
left, be 15000pL/s, opposite side covering flow velocity have chosen 500pL/s, 1500pL/s, 2500pL/s, 5000pL/s and 10000pL/s index distribution at this moment as shown in Figure 4 respectively.The change of this spatial refractive index skew the most directly affects the focus deflection that can realize light beam exactly on light, and deflection angle is along with the change continuously adjustabe of covering flow velocity.
3) when sandwich layer fluid adopts the dilute solution of ethylene glycol that refractive index is higher, covering fluid adopts the deionized water that refractive index is lower, keeps sandwich layer equal and constant with side covering rate of flow of fluid simultaneously.The deflection of the core region to high index of refraction is realized by the flow velocity of continuous setup opposite side covering.Adopt fr to represent flow velocity 5000pL/s, as shown in Figure 5, the flow velocity when right side is increased to 10fr from 1fr, and the high index of refraction center of index distribution is increased to 58 μm from 0 μm.Namely the sandwich layer liquid that refractive index is higher there occurs obvious deflection effect, and along with this deflection of increase of flow velocity be continuously adjustable.
Claims (3)
1. a beam direction is along the free adjustable fluid lenticule of a dimension, it is characterized in that: comprise optical waveguide, incident laser device, beam reception face and effluent fluid reservoir, described optical waveguide has the runner for carrying microfluid, described runner comprises a sandwich layer fluid intake, two symmetrical covering fluid intakes, fluid microcavity and two symmetrical fluid egress points, described sandwich layer fluid intake, covering fluid intake all with the inlet side communication of described fluid microcavity, the outlet side of described fluid microcavity is connected with two fluid egress points, described fluid egress point is communicated with effluent fluid reservoir, described incident laser device and beam reception face coaxially arranged, described incident laser device and direction consistent central axial direction along microcavity parallel with fluid flow direction with the axis in beam reception face, described sandwich layer fluid intake and the interior flow rate regulating device installed in order to regulate fluid velocity of covering fluid intake,
Only there is diffusion and convective motion each other in described sandwich layer fluid and covering fluid, covering fluid ring is around sandwich layer fluid, described sandwich layer fluid and covering fluid are two kinds of fluids with different refractivity, and described sandwich layer fluid and covering fluid flow and jointly form optical waveguide in fluid microcavity.
2. beam direction as claimed in claim 1 is along the free adjustable fluid lenticule of a dimension, it is characterized in that: described flow rate regulating device is the peristaltic pump injecting fluid.
3. beam direction as claimed in claim 1 is along the free adjustable fluid lenticule of a dimension, it is characterized in that: described covering fluid refractive index is higher than described sandwich layer fluid refractive index.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104932044A (en) * | 2015-06-08 | 2015-09-23 | 浙江工业大学 | Fluid microlens with one-dimensional freely adjustable light-beam direction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104932044A (en) * | 2015-06-08 | 2015-09-23 | 浙江工业大学 | Fluid microlens with one-dimensional freely adjustable light-beam direction |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 Termination date: 20180608 |