CN104932044A - Fluid microlens with one-dimensional freely adjustable light-beam direction - Google Patents
Fluid microlens with one-dimensional freely adjustable light-beam direction Download PDFInfo
- Publication number
- CN104932044A CN104932044A CN201510309595.3A CN201510309595A CN104932044A CN 104932044 A CN104932044 A CN 104932044A CN 201510309595 A CN201510309595 A CN 201510309595A CN 104932044 A CN104932044 A CN 104932044A
- Authority
- CN
- China
- Prior art keywords
- fluid
- covering
- sandwich layer
- optical waveguide
- flow
- 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
- G02B3/00—Simple or compound lenses
- G02B3/12—Fluid-filled or evacuated lenses
- G02B3/14—Fluid-filled or evacuated lenses of variable focal length
Abstract
The invention relates to a fluid microlens whose light beam direction can be freely adjustment in one dimension. The fluid microlens comprises a fluid optical waveguide, an incident laser, a light beam reception surface and flow-out fluid containers. A channel for carrying microfluid is formed in the fluid optical waveguide, and comprises a core layer fluid inlet, two symmetrical wrapping layer fluid inlets, a fluid micro-cavity and two symmetrical fluid outlets, the core layer fluid inlet and the wrapping layer fluid inlets are communicated with the inlet side of the fluid micro-cavity, the outlet side of the fluid micro-cavity is connected with the two fluid outlets, and the fluid outlets are communicated with the flow-out fluid containers. The incident laser is arranged coaxial with the light beam reception surface, and the axes of the incident laser and the light beam reception surface are parallel with the flowing direction of fluid and are both along the central axis of the micro-cavity. The core layer fluid inlet and the wrapping layer fluid inlets are internally provided with a flow velocity adjusting device which is used to adjust the velocity of the fluid. The fluid microlens can realize dynamic tuning, and is high in integrated level, simple in structure, convenient to manufacture and low in cost.
Description
Technical field
The present invention 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 present invention proposes the adjustable lenticule of a kind of novel beam direction combining integrated-type and tunable function, 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 invention 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 technical solution adopted for the present invention to solve the technical problems is:
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 invention 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.
Beneficial effect of the present invention is 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 invention based on the tunable lenticule of beam direction of 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 the beam direction that the present invention is based on optical waveguide along the freely adjustable lenticular schematic diagram of fluid of a dimension.
Fig. 2 is that the beam direction that the present invention is based on optical waveguide carries the cavity schematic diagram of microfluid along optical waveguide in the free 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 invention will be 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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510309595.3A CN104932044A (en) | 2015-06-08 | 2015-06-08 | Fluid microlens with one-dimensional freely adjustable light-beam direction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510309595.3A CN104932044A (en) | 2015-06-08 | 2015-06-08 | Fluid microlens with one-dimensional freely adjustable light-beam direction |
Publications (1)
Publication Number | Publication Date |
---|---|
CN104932044A true CN104932044A (en) | 2015-09-23 |
Family
ID=54119292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510309595.3A Pending CN104932044A (en) | 2015-06-08 | 2015-06-08 | Fluid microlens with one-dimensional freely adjustable light-beam direction |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN104932044A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2718669C1 (en) * | 2019-06-28 | 2020-04-13 | Иван Юрьевич Смирнов | Heat-resistant integral-optical radiation divider |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011232506A (en) * | 2010-04-27 | 2011-11-17 | Tokyo Institute Of Technology | Variable-focus liquid lens and focus control method thereof |
US20130021673A1 (en) * | 2009-07-15 | 2013-01-24 | The Penn State Research Foundation | Tunable Liquid Gradient Refractive Index Lens Device |
CN204740362U (en) * | 2015-06-08 | 2015-11-04 | 浙江工业大学 | Beam direction follows free adjustable fluid lenticule of dimension |
-
2015
- 2015-06-08 CN CN201510309595.3A patent/CN104932044A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130021673A1 (en) * | 2009-07-15 | 2013-01-24 | The Penn State Research Foundation | Tunable Liquid Gradient Refractive Index Lens Device |
JP2011232506A (en) * | 2010-04-27 | 2011-11-17 | Tokyo Institute Of Technology | Variable-focus liquid lens and focus control method thereof |
CN204740362U (en) * | 2015-06-08 | 2015-11-04 | 浙江工业大学 | Beam direction follows free adjustable fluid lenticule of dimension |
Non-Patent Citations (1)
Title |
---|
黎永前等: "微纳流体光波导及其在生物传感器中的应用", 《光学精密工程》 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2718669C1 (en) * | 2019-06-28 | 2020-04-13 | Иван Юрьевич Смирнов | Heat-resistant integral-optical radiation divider |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8564885B2 (en) | Tunable liquid gradient refractive index lens device | |
US7826145B2 (en) | Fluidic adaptive lens systems with pumping systems | |
CN103869477B (en) | Tunable optical ripple beam splitter based on optical waveguide | |
Nguyen | Micro-optofluidic Lenses: A review | |
JP2005182008A (en) | Tunable microlens array | |
CN103792664B (en) | A kind of beam shaping method based on micro-fluidic optical technology | |
Rosenauer et al. | 3D fluidic lens shaping—a multiconvex hydrodynamically adjustable optofluidic microlens | |
CN102183822A (en) | Elliptical light spot optical fiber collimator | |
CN204740362U (en) | Beam direction follows free adjustable fluid lenticule of dimension | |
CN104932044A (en) | Fluid microlens with one-dimensional freely adjustable light-beam direction | |
CN204989519U (en) | Beam direction follows two free adjustable fluid lenticules of dimension | |
CN105044804B (en) | Fluid microlens with free adjustable light beam direction along two dimensions | |
Song et al. | Toward the commercialization of optofluidics | |
CN104932109A (en) | One-dimensional tunable light beam direction regulation and control method based on fluid optical waveguide | |
CN103792665A (en) | Beam shaping device based on microfluidic optical technology | |
CN105404068B (en) | A kind of two dimensional tunable beam direction regulation and control method based on optical waveguide | |
CN104777531A (en) | Dynamic adjusting method for focal length based on graded-refractive-index fluid micro lens | |
CN106019473A (en) | Micro-nano-structured wave division multiplexer based on Ag/air medium | |
CN204575878U (en) | The fluid lenticule that in sheet, focal length and focal spot are dynamically adjustable | |
CN104765081A (en) | Fluid micro lens with dynamically adjustable on-chip focal distance and focal spot | |
CN104865622A (en) | Dynamic adjustment method for focal spots based on fluid micro lens with gradually changing refraction index | |
Mao et al. | In-plane tunable optofluidic microlenses | |
CN213302555U (en) | Optical device | |
Le et al. | Simulation of two-dimensional adjustable liquid gradient refractive index (L-GRIN) microlens | |
CN106371172A (en) | Arrayed waveguide grating |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into 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: 20150923 |