CN101464558A - Electric tuning optical attenuator - Google Patents
Electric tuning optical attenuator Download PDFInfo
- Publication number
- CN101464558A CN101464558A CNA2009100283118A CN200910028311A CN101464558A CN 101464558 A CN101464558 A CN 101464558A CN A2009100283118 A CNA2009100283118 A CN A2009100283118A CN 200910028311 A CN200910028311 A CN 200910028311A CN 101464558 A CN101464558 A CN 101464558A
- Authority
- CN
- China
- Prior art keywords
- fluid
- optical attenuator
- lens
- connector pin
- sleeve pipe
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 41
- 239000012530 fluid Substances 0.000 claims abstract description 54
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 239000004020 conductor Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000013307 optical fiber Substances 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 6
- 230000002209 hydrophobic effect Effects 0.000 claims description 6
- 229920000297 Rayon Polymers 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009736 wetting Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920002379 silicone rubber Polymers 0.000 description 4
- 235000002639 sodium chloride Nutrition 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000010365 information processing Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000006059 cover glass Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- PBLNBZIONSLZBU-UHFFFAOYSA-N 1-bromododecane Chemical compound CCCCCCCCCCCCBr PBLNBZIONSLZBU-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004890 Hydrophobing Agent Substances 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010876 biochemical test Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- ALKZAGKDWUSJED-UHFFFAOYSA-N dinuclear copper ion Chemical compound [Cu].[Cu] ALKZAGKDWUSJED-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- PQPVPZTVJLXQAS-UHFFFAOYSA-N hydroxy-methyl-phenylsilicon Chemical compound C[Si](O)C1=CC=CC=C1 PQPVPZTVJLXQAS-UHFFFAOYSA-N 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000052 poly(p-xylylene) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Landscapes
- Mechanical Light Control Or Optical Switches (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
An electric tuning optical attenuator relates to an optical attenuator structure which is based on electric wetting effect and comprises a variable focus lens. The optical attenuator takes a precise sleeve with a cylindrical through hole as a main body; and the sleeve is positioned between a left connector base pin (2) and a right connector base pin (12). A lens cavity is formed by a gap among the sleeve, the left connector base pin (2) and the right connector base pin (12) and is used for storing liquid lens material; three types of insoluble liquids, namely a first low refractive index liquid (3), a high refractive index liquid (4) and a second low refractive index liquid (5), are placed in the lens cavity; a double-lens medium is formed by the three types of insoluble liquid; one of or both the first low refractive index liquid (3) and the second low refractive index liquid (5) is (are) conducting fluid; the sleeve is made of conducting materials and taken as an electrode; another electrode or two electrodes is (are) the left connector base pin (2) and the right connector base pin (12) made of conducting materials.
Description
Technical field
The present invention relates to a kind of electric tuning optical attenuator structure of novelty, belong to the technical field of optical communication, photoelectric sensing and optical information processing device.
Background technology
Electric-controlled adjustable optical attenuator is one of important passive device in the optical communication system, and it is widely used in the light power equalization of each channel of dense wave division multipurpose (DWDM) and adjusts light signal after fiber amplifier amplifies etc.Also can be used for the detection of dynamic of the long Distance Transmission of analog optical fiber, transmission system etc.Utilize the Micro-Opto-Electro-Mechanical Systems adjustable optical attenuator of micro mechanical technology manufacturing to have advantages such as volume is little, in light weight, energy consumption is little in recent years, the new method of having opened up the optical attenuator design and having produced.General adjustable optical attenuator can not realize that damping capacity accurately regulates and be locked in particular value, and is generally attenuator and stepper motor associative form, reaches digitizing variable optical attenuation amount by micro-step motor control continuous gradation attenuator rotation or translation.But such design is subject to stepper motor cost height, and volume is bigger, is difficult to be integrated in the optical communication module of dwindling day by day; And the continuous gradation attenuator of one of its core component, coating process requires high, at present domesticly still can not produce.
And can change the luminous flux and the visual field performance of micro-optical systems based on the zoom lenticule of electrowetting effect, have good handling and adaptability, can be applicable to optical switch and systems such as light interconnection, three-dimensional light storage, static digital camera and medical science endoscope as replacing conventional lenses.Existing research and application concentrate on simple lens varifocal imaging technology, the miniature liquid zoom lens of the FluidFocus of relatively more typical as Dutch Philips company issue and the issue of French Varioptic company, the zoom of these lens be utilize electric-control method by changing liquid interfacial curvature so that focus.This technology has adopted the lens subassembly of flowing liquid as zoom, and present relatively mechanical zoom mode will have a lot of advantage parts.But existing research and application concentrate on simple lens varifocal imaging technology, relate to seldom for the interface unit that is applied to optical communication field.
Summary of the invention
Technical matters: the objective of the invention is to propose a kind of electric tuning optical attenuator structure of novelty, solve the automatically controlled tuning problem of optical attenuator.Having important techniques is worth.The optical attenuator of the present invention design has simple in structure, easy making, advantage such as with low cost.
Technical scheme: electric tuning optical attenuator of the present invention is to have the accurate sleeve pipe of cylindric through hole, and accurate sleeve pipe is between left connector pin and right connector pin, and the space between the above-mentioned three forms lens cavity, is used for the storage of liquids lens material; Place three kinds of immiscible liquid i.e. first low-refraction fluid, high index of refraction dielectric fluid and the second low-refraction fluid in the lens cavity, these three kinds of liquid constitute the double lens medium, and one or both in the first low-refraction fluid, the second low-refraction fluid are conductive fluid; Sleeve pipe adopts conductive material to make and as an electrode, another or two electrodes then are left connector pin and the right connector pins of making of conductive material.
The inboard of described sleeve pipe is provided with insulation course, and the inboard that insulation course contacts with fluid is provided with hydrophobic layer.
Accurate sleeve pipe one side has the injection that three fluid injection apertures are respectively applied for three kinds of fluids.Left and right connector pin hollow is the insertion mouth of input optical fibre, output optical fibre, inserts mouth and prevents escape of liquid with the fluid contact position with the seal glass sealing.Be provided with viscose glue in the mesopore of described left connector pin and right connector pin.
During concrete the making, select the dielectric fluid and the conductive fluid of specific refractive index, calculated the volume proportion scheme, the contact end face of incident optical is centered close near the focus of first liquid lens, the contact end face of outgoing optical fiber is centered close near the focus of second liquid lens.After adding voltage between sleeve pipe and left connector pin or the right connector pin, interfacial tension between conductive fluid and the sidewall reduces because of the effect of electrowetting effect, thereby change the shape of liquid surface, realize the tuning of the focal length of lens, and then the regulation and control of realization optical fiber coupling light intensity, purpose is controlled in the decay that reaches light.
Beneficial effect: according to above narration as can be known, the present invention has following characteristics:
The present invention combines the lenticule zoom technology with the modern optical communication technology, designed a kind of automatically controlled tuning optical attenuator of novelty, owing to complex devices such as not using motor makes cost of manufacture, production technology reduce greatly, have important techniques and be worth and economic worth, will be widely used in optical communication and optical information processing field.
The innovation part is: liquid zoom lens is applied to realize the automatically controlled tuning of optical attenuator among the optical connector spare.The optical attenuator of this novelty will be widely used in optical communication field and optical information processing field.
Description of drawings
Fig. 1 is an electric tuning optical attenuator structural representation.Have among the figure: accurate sleeve pipe 1, left connector pin 2, the first low-refraction fluid 3, high index of refraction dielectric fluid 4, the second low-refraction conductive fluid 5, seal glass 6, insulation course 7, hydrophobic layer 8, input optical fibre 9, output optical fibre 10, viscose glue 11, right connector pin 12, fluid injecting hole 13.
Fig. 2 is an electric tuning optical attenuator principle of work synoptic diagram.
Fig. 3 is a kind of design drawing of sleeve pipe.
Embodiment
A kind of electric tuning optical attenuator of novelty is characterized in that sleeve pipe is between left connector pin 2 and right connector pin 12 to have the accurate sleeve pipe 1 of cylindric through hole.Space between the above-mentioned three forms lens cavity, is used for the storage of liquids lens material; Place three kinds of immiscible liquid i.e. first low-refraction fluid (conduction or non-conductive) 3, high index of refraction dielectric fluid 4 and the second low-refraction fluid (conduction) 5 in the lens cavity, these three kinds of liquid constitute the double lens medium, and one or both in the first low-refraction fluid 3, the second low-refraction fluid 5 are conductive fluid; Sleeve pipe adopts conductive material to make and as an electrode, another or two electrodes then are left connector pin 2 and the right connector pins of making of conductive material 12.The inboard of described sleeve pipe 1 is provided with insulation course 7, and the inboard that insulation course 7 contacts with fluid is provided with hydrophobic layer 8.Sleeve pipe one side has the injection that three fluid injection apertures 13 are respectively applied for three-fluid.Left and right connector pin hollow is the insertion mouth of input optical fibre 9, output optical fibre 10, inserts mouth and prevents escape of liquid with the fluid contact position with glass sheet 6 sealings.
Embodiment 1:
Conductive silicon rubber is adopted in accurate sleeve pipe 1 preparation.This is because conductive silicon rubber is easy to extrusion modling, can realize large-scale production by the mold injection job operation, and can be used as an electrode; One side of sleeve pipe is reserved three fluid injection apertures 13.Another electrode connector pin two or 12 adopts punching of metallic copper post precision optical machinery and polishing to form, and this is because metallic copper is common metal and is easy to processing; The size in hole and input optical fibre 9, output optical fibre 10 external diameters are complementary. Conductive fluid 3 or 5 may have freezing problem when low temperature uses.Can reduce freezing point with the salt solusion of high concentration.For low-density and the refractive index that keeps salt solution, adopt the salt of low atomic weight: lithium chloride.The lithium chloride of 20% concentration causes freezing point to be lower than-40 ℃, and density p is 1.12kg/m3, and refractive index is 1.38.Dielectric fluid 4 adopts the phenyl methyl siloxane that mixes, and it has high index of refraction and good electric wet performance.Dissolve several percentage points of carbon tetrabormated compound (ρ=2.96kg/m
3) the density of iknsulating liquid and the density of salt solusion be complementary.The refractive index that obtains thus is 1.55.The temperature correlation refractive index of these two kinds of liquid is identical (dn/dT=-0.0003/K) substantially.Therefore, in required temperature range, be very little to the effect of the focal length of lens, the remaining little change of focal length can be by adjusting voltage a little.Seal glass 6 adopts the high performance thin glass sheet (cover glass of a kind of biochemical test special use of producing as VWR Scientific company.Model: WESTChester, PA19380), this slide toughness is fine, the transmittance height; Insulation course 7 adopts growth method to generate the SiO of one deck 500nm on the cover inner tube layer
2, hydrophobic layer 8 can be realized by dipping hydrophobing agent FOTs.Fluid sealant 11 adopts epoxy resin.
During fluid injection, in three homepage apertures, slowly inject the first low-refraction fluid (conduction), high index of refraction dielectric fluid, the second low-refraction fluid (conduction) successively according to calculating good liquid volume.This programme adopts dual power supply control.Because left connector pin directly contacts with first conductive fluid, first power source voltage is applied on the dielectric insulation layer between first conductive fluid and the sleeve pipe, its interfacial tension reduces because of the effect of electrowetting effect, thereby change the shape at first conducting liquid and iknsulating liquid interface, realize the control of first focal length of lens.Above-mentioned principle is equally applicable to the focus controlling of second lens.Thereby the focus of scioptics moves forward and backward the control that the coupling light intensity of regulating optical fiber realizes the decay of light at fiber end face.Also can use single supply to control the decay control that second focal length of lens realizes light.The relation of its voltage and output intensity is calculated by design proposal and is tried to achieve or record by experiment, then the decay ratio of direct display light power on display module.
Embodiment 2:
Accurate sleeve pipe preparation adopts metallic copper copper post precision optical machinery to be processed into pipe box and polishing forms, and the copper sheathing tube wall is reserved three apertures and injected for fluid.The connector pin adopts the conductive silicon rubber mold to form, and hollow is the optical fiber reserved location and since the pliability of silicon rubber make optical fiber insertion with extract more convenient.Transparent substrate still adopts high performance cover glass.Insulation course adopts Vacuum Coating method to generate the Parylene of 3 micron thickness.Hydrophobic layer adopts the polytetrafluoroethylene polymer material, and (english abbreviation is PTFE, trade (brand) name
, Teflon@AF) coating realizes.For simplifying manufacturing process, the first low-refraction fluid can adopt ultraviolet or visible-light curing viscose glue to be made into cured lens.Dielectric fluid adopts bromododecane (density 1.0399, refractive index 1.4583), and conductive fluid adopts and is configured to the common salt aqueous solution that density equates with it, to remove the influence of gravity.The shape at Control of Voltage dielectric fluid and conductive fluid interface is adjusted the focal position, thereby adjusts the light intensity coupling of lens-optical fiber.Consistent with fiber optic hub for the center that further guarantees lens, the electric core of sleeve pipe can be designed to shown in Figure 3, and each valve is as electrode, and its voltage is by the control of IC circuit.
Claims (5)
1, a kind of electric tuning optical attenuator, it is characterized in that to have the accurate sleeve pipe (1) of cylindric through hole, accurate sleeve pipe (1) is positioned between left connector pin (2) and the right connector pin (12), and the space between the above-mentioned three forms lens cavity, is used for the storage of liquids lens material; Place three kinds of immiscible liquid i.e. first low-refraction fluid (3), high index of refraction dielectric fluid (4) and the second low-refraction fluid (5) in the lens cavity, these three kinds of liquid constitute the double lens medium, and one or both in the first low-refraction fluid (3), the second low-refraction fluid (5) are conductive fluid; Sleeve pipe adopts conductive material to make and as an electrode, another or two electrodes then are left connector pin (2) and the right connector pins of making of conductive material (12).
2. electric tuning optical attenuator according to claim 1 is characterized in that the inboard of described sleeve pipe (1) is provided with insulation course (7), and the inboard that insulation course (7) contacts with fluid is provided with hydrophobic layer (8).
3. electric tuning optical attenuator according to claim 1 is characterized in that accurate sleeve pipe (1) one side has the injection that three fluid injection apertures (13) are respectively applied for three kinds of fluids.
4. electric tuning optical attenuator according to claim 1 is characterized in that left and right connector pin hollow is the insertion mouth of input optical fibre (9), output optical fibre (10), inserts mouth and prevents escape of liquid with the fluid contact position with seal glass (6) sealing.
5. electric tuning optical attenuator according to claim 1 is characterized in that being provided with viscose glue (11) in the mesopore of described left connector pin (2) and right connector pin (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100283118A CN101464558B (en) | 2009-01-13 | 2009-01-13 | Electric tuning optical attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100283118A CN101464558B (en) | 2009-01-13 | 2009-01-13 | Electric tuning optical attenuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101464558A true CN101464558A (en) | 2009-06-24 |
| CN101464558B CN101464558B (en) | 2010-07-28 |
Family
ID=40805223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100283118A Active CN101464558B (en) | 2009-01-13 | 2009-01-13 | Electric tuning optical attenuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101464558B (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103231A (en) * | 2011-02-28 | 2011-06-22 | 南京邮电大学 | Electric tuning optical attenuator |
| CN102129099A (en) * | 2011-04-15 | 2011-07-20 | 南京邮电大学 | Handheld variable optical attenuator |
| CN102135643A (en) * | 2011-02-28 | 2011-07-27 | 南京邮电大学 | Pressure-control adjustable optical attenuator |
| CN102135642A (en) * | 2011-02-28 | 2011-07-27 | 南京邮电大学 | Variable optical attenuator |
| CN102147504A (en) * | 2011-02-28 | 2011-08-10 | 南京邮电大学 | Variable optical attenuator based on prism with adjustable apex angle |
| CN102162914A (en) * | 2011-04-25 | 2011-08-24 | 南京信息职业技术学院 | Voltage-controlled variable optical attenuator |
| CN102193148A (en) * | 2011-02-28 | 2011-09-21 | 南京邮电大学 | Variable optical attenuator utilizing multifocal lens with adjustable edge apex angle |
| CN102749704A (en) * | 2012-07-18 | 2012-10-24 | 南京邮电大学 | Electromagnetic control-based adjustable optical attenuator |
| CN103293603A (en) * | 2013-06-17 | 2013-09-11 | 南京邮电大学 | Electronic control variable optical attenuator with adjustable attenuation coefficients |
| CN105897332A (en) * | 2016-04-08 | 2016-08-24 | 锐捷网络股份有限公司 | Detection device and detection method |
| WO2018197556A1 (en) * | 2017-04-26 | 2018-11-01 | Carl Zeiss Microscopy Gmbh | Method and device for regulating intensities and/or spectral components of radiation irradiated into an aperture diaphragm |
| CN109239909A (en) * | 2018-09-27 | 2019-01-18 | 广西师范大学 | A kind of modulation film of directional light and the optical signal transmission device without optical cable |
| CN110441902A (en) * | 2019-08-08 | 2019-11-12 | 上海酷聚科技有限公司 | A kind of liquid lens and preparation method thereof |
| CN110456432A (en) * | 2019-08-08 | 2019-11-15 | 上海酷聚科技有限公司 | A kind of liquid lens and preparation method thereof |
| CN113406738A (en) * | 2021-07-14 | 2021-09-17 | 南京邮电大学 | Variable-focal-length bifocal microlens and application method thereof |
-
2009
- 2009-01-13 CN CN2009100283118A patent/CN101464558B/en active Active
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103231B (en) * | 2011-02-28 | 2012-11-28 | 南京邮电大学 | Electric tuning optical attenuator |
| CN102103231A (en) * | 2011-02-28 | 2011-06-22 | 南京邮电大学 | Electric tuning optical attenuator |
| CN102135642A (en) * | 2011-02-28 | 2011-07-27 | 南京邮电大学 | Variable optical attenuator |
| CN102147504A (en) * | 2011-02-28 | 2011-08-10 | 南京邮电大学 | Variable optical attenuator based on prism with adjustable apex angle |
| CN102193148A (en) * | 2011-02-28 | 2011-09-21 | 南京邮电大学 | Variable optical attenuator utilizing multifocal lens with adjustable edge apex angle |
| CN102135643A (en) * | 2011-02-28 | 2011-07-27 | 南京邮电大学 | Pressure-control adjustable optical attenuator |
| CN102129099A (en) * | 2011-04-15 | 2011-07-20 | 南京邮电大学 | Handheld variable optical attenuator |
| CN102162914A (en) * | 2011-04-25 | 2011-08-24 | 南京信息职业技术学院 | Voltage-controlled variable optical attenuator |
| CN102749704A (en) * | 2012-07-18 | 2012-10-24 | 南京邮电大学 | Electromagnetic control-based adjustable optical attenuator |
| CN103293603A (en) * | 2013-06-17 | 2013-09-11 | 南京邮电大学 | Electronic control variable optical attenuator with adjustable attenuation coefficients |
| CN103293603B (en) * | 2013-06-17 | 2016-05-11 | 南京邮电大学 | The automatically controlled variable optical attenuator of adjustable damping coefficient |
| CN105897332A (en) * | 2016-04-08 | 2016-08-24 | 锐捷网络股份有限公司 | Detection device and detection method |
| CN105897332B (en) * | 2016-04-08 | 2018-10-12 | 锐捷网络股份有限公司 | Detection device and detection method |
| WO2018197556A1 (en) * | 2017-04-26 | 2018-11-01 | Carl Zeiss Microscopy Gmbh | Method and device for regulating intensities and/or spectral components of radiation irradiated into an aperture diaphragm |
| CN109239909A (en) * | 2018-09-27 | 2019-01-18 | 广西师范大学 | A kind of modulation film of directional light and the optical signal transmission device without optical cable |
| CN110441902A (en) * | 2019-08-08 | 2019-11-12 | 上海酷聚科技有限公司 | A kind of liquid lens and preparation method thereof |
| CN110456432A (en) * | 2019-08-08 | 2019-11-15 | 上海酷聚科技有限公司 | A kind of liquid lens and preparation method thereof |
| CN113406738A (en) * | 2021-07-14 | 2021-09-17 | 南京邮电大学 | Variable-focal-length bifocal microlens and application method thereof |
| CN113406738B (en) * | 2021-07-14 | 2022-05-10 | 南京邮电大学 | Variable-focus bifocal microlens and application method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101464558B (en) | 2010-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101464558B (en) | Electric tuning optical attenuator | |
| CN101441284A (en) | Electric tuning micro-flow control double-zoom lens | |
| CN102103231B (en) | Electric tuning optical attenuator | |
| CN102135643A (en) | Pressure-control adjustable optical attenuator | |
| CN100342258C (en) | Zoom lens | |
| KR20080031299A (en) | Lens | |
| CN102103220A (en) | Varifocal lens of micro-fluid control liquid based on ionic liquid | |
| Xu et al. | Adaptive liquid lens actuated by photo-polymer | |
| CN102879900A (en) | Zoom micro lens based on piezoelectric inverse effect | |
| CN102096126A (en) | Ion liquid-based microfluidic varifocus lens | |
| CN100495078C (en) | Focal-distance and view-field-adjusting liquid microlens and its production | |
| CN108663869A (en) | A kind of optofluidic lens of big zooming range | |
| An et al. | Spherically encapsulated variable liquid lens on coplanar electrodes | |
| CN1996056A (en) | Method for making electric-tuning micro-fluidic zoom lens array chip | |
| CN102162914B (en) | Voltage-controlled variable optical attenuator | |
| CN202230221U (en) | Electric-tuning optical switch device | |
| CN102135642A (en) | Variable optical attenuator | |
| CN103293603B (en) | The automatically controlled variable optical attenuator of adjustable damping coefficient | |
| CN102129099A (en) | Handheld variable optical attenuator | |
| CN202256729U (en) | Liquid zooming lens | |
| CN201331592Y (en) | Magnetic control variable-focus liquid lens | |
| CN101487906A (en) | Production method of electric tuning microcurrent-control zoom lens array chip | |
| CN102183823A (en) | Optical fiber collimator | |
| CN100443924C (en) | Electric tuning micro-fluid control variable focusing lens array chip | |
| CN103076643A (en) | Liquid continuous zooming lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI DIANWU COLLECTIVE ASSETS MANAGEMENT CO., Effective date: 20150107 Owner name: STATE GRID SHANGHAI ELECTRIC POWER COMPANY Free format text: FORMER OWNER: NANJING POST + TELECOMMUNICATION UNIV. Effective date: 20150107 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 210003 NANJING, JIANGSU PROVINCE TO: 200122 PUDONG NEW AREA, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150107 Address after: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Patentee after: STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee after: SHANGHAI ELECTRIC POWER EQUIPMENT COLLECTIVE ASSETS MANAGEMENT CO.,LTD. Address before: 210003 Nanjing City, Jiangsu Province, the new model road No. 66 Patentee before: NANJING University OF POSTS AND TELECOMMUNICATIONS |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 200122, 1122 deep road, Pudong New Area, Shanghai Patentee after: STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee after: Shanghai Dianwu Asset Management Co.,Ltd. Address before: 200122, 1122 deep road, Pudong New Area, Shanghai Patentee before: STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee before: SHANGHAI ELECTRIC POWER EQUIPMENT COLLECTIVE ASSETS MANAGEMENT Co.,Ltd. Address after: 200122, 1122 deep road, Pudong New Area, Shanghai Patentee after: STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee after: SHANGHAI ZHUORUN ASSET MANAGEMENT Co.,Ltd. Address before: 200122, 1122 deep road, Pudong New Area, Shanghai Patentee before: STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee before: Shanghai Dianwu Asset Management Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210511 Address after: 1122 Yuanshen Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 200122 Patentee after: STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee after: SHANGHAI HENGNENGTAI ENTERPRISE MANAGEMENT Co.,Ltd. Address before: 200122, 1122 deep road, Pudong New Area, Shanghai Patentee before: STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee before: SHANGHAI ZHUORUN ASSET MANAGEMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right |