CN104597533A - Annular-aperture transflective mixed type liquid lens - Google Patents
Annular-aperture transflective mixed type liquid lens Download PDFInfo
- Publication number
- CN104597533A CN104597533A CN201510010780.2A CN201510010780A CN104597533A CN 104597533 A CN104597533 A CN 104597533A CN 201510010780 A CN201510010780 A CN 201510010780A CN 104597533 A CN104597533 A CN 104597533A
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- China
- Prior art keywords
- liquid
- annular
- lens
- liquid lens
- panel
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Classifications
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- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/004—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
Abstract
The invention discloses an annular-aperture transflective mixed type liquid lens. The annular-aperture transflective mixed type liquid lens comprises an incident faceplate, an exit faceplate, a case, a dielectric hydrophobic layer, a filling liquid I, a filling liquid II, a side wall transparent electrode, an exit surface transparent electrode, an incident surface round reflecting film and an exit surface annular reflecting film. Light is incident into the lens through an annular aperture and then is reflected twice by the exit surface annular reflecting film and the incident surface round reflecting film, thereby passing through liquid-liquid curved surfaces three times to obtain focal power. The annular-aperture transflective mixed type liquid lens can effectively enhance the focal power.
Description
Technical field
The present invention relates to a kind of liquid lens, more particularly, the present invention relates to the box-like liquid lens of the saturating back mixing of a kind of annular aperture.
Background technology
Along with the development of lightweight camera lens, microminiaturization and the lightweight of the optical imaging system such as camera and projector become possibility.Various Lightweight Technology becomes the focus that people pay close attention to, and the liquid lens technology particularly closely grown up during the last ten years has become the important direction of of camera lens lightweight development gradually.Liquid lens forms liquid-liquid curved surface by two kinds of immiscible liquid thus has the function of lens reflection light, and the more important thing is that the technology such as, dielectric power moistening by electricity can change the curvature of liquid-liquid curved surface, therefore liquid lens has the function of autozoom.LUCENT company released the voltage-controlled liquid lens of first item in the world in 2003.Within 2004, PHILIPS company develops the zooming liquid lens of novel inorganic tool movable part.And the Varioptic companies of 2006 to 2014 France is proposed many moneys liquid lenss such as Arctic320, Arctic416, Arctic39N0.These indicate that liquid lens achieves commercialization, and therefore liquid lens is also regarded as the direction of following lens development.
Although liquid lens has zoom function, current liquid lens forms a curved surface by two kinds of liquid.The refringence of usual two kinds of liquid is also little in such an embodiment, and therefore, even if curvature of curved surface alters a great deal, its focal power is also extremely limited.The liquid lens of other types, such as elastic membrane liquid lens, forms curvature between liquid and gas, and its focal power is comparatively large, but cannot overcome gravitational effect, is therefore difficult to be used widely.Document " Liquid lens with double tunable surfaces for large power tunability and improved optical performance (Journal of Optics; Vol.13; No.13; pp115503-115508,2011) " discloses a kind of liquid lens increasing liquid lens power variation scope.Focal power is risen to the twice of traditional liquid lens by the method that these lens use three kinds of liquid to form two liquid-liquid levels, but these lens considerably increase the thickness of lens while improving focal power, be unfavorable for that lightweight develops.
Summary of the invention
The present invention proposes the box-like liquid lens of the saturating back mixing of a kind of annular aperture.As shown in Figure 1, these lens comprise: the circular reflectance coating of incident panel, outgoing panel, lens case, hydrophobic dielectric layer, filling liquid I, filling liquid II, sidewall transparency electrode, exit facet transparency electrode, the plane of incidence and exit facet endless belt reflectance coating.
The principle of work of the box-like liquid lens of the saturating back mixing of annular aperture of the present invention as shown in Figure 2.Light first incides liquid lens by the annular aperture of incident panel and first time obtains focal power by liquid-liquid level; When light arrives outgoing panel, by exit facet endless belt reflecting film reflects, light path is turned back, and again also obtain focal power for the second time by liquid-liquid curved surface.Light moves on when arriving incident panel, is again turned back by the circular reflecting film reflects of the plane of incidence, obtains focal power by liquid-liquid curved surface third time.Last light leaves liquid lens from the central area of outgoing panel.The focal power obtained in the process of whole ray tracing
provided by formula below:
（1）
Wherein
n water for the refractive index of filling liquid II,
n oil for the refractive index of filling liquid I,
cfor the curvature of liquid-liquid curved surface.Because the reflectance coating of incident panel and outgoing panel makes light path multiple reflections in liquid lens, thus increase the focal power of liquid lens.Compared with traditional liquid lens, focal power, when not increasing liquid lens thickness, is increased to original 3 times by the present invention, is equivalent to reuse the effect that 3 identical liquid lenss obtain.
Preferably, lens case is high
d 1>=3mm and
d 1≤ 5mm, diameter
d 2>=5mm and
d 2≤ 10mm.
Preferably, incident panel is identical with exit facet board size, plane of incidence board diameter
d 3>=5mm and
d 3≤ 10mm, thickness
d 4>=0.5mm and
d 4≤ 1mm, exit facet board diameter
d 5>=5mm and
d 5≤ 10mm, thickness
d 6>=0.5mm and
d 6≤ 1mm.
Preferably, the circular reflectance coating diameter of the plane of incidence
d 7>=0.7
d 3and
d 7≤ 0.9
d 3, exit facet endless belt reflectance coating overall diameter
d 8=
d 3, interior diameter
d 8>=0.7
d 3and
d 8≤ 0.9
d 3.
Preferably, filling liquid I is identical with the density of filling liquid II.
Preferably, filling liquid I is silicone oil, and filling liquid II is electrolytic liquid or ionic liquid.
Preferably, the type of drive of the box-like liquid lens of the saturating back mixing of annular aperture is that electric moistening driving or mechanical wet drive.
Accompanying drawing explanation
Accompanying drawing 1 is the section of structure of the box-like liquid lens of the saturating back mixing of annular aperture of the present invention.
Accompanying drawing 2 is the structure side view of the box-like liquid lens of the saturating back mixing of annular aperture of the present invention.
Accompanying drawing 3 is principle of work schematic diagram of the present invention.
Accompanying drawing 4 is the focal power of the box-like liquid lens of the saturating back mixing of annular aperture and the relation schematic diagram of voltage in embodiment.
Shown by reference numeral in above-mentioned each accompanying drawing is:
1 incident panel, 2 outgoing panels, 3 lens cases, 4 hydrophobic dielectric layers, 5 filling liquid I, 6 filling liquid II, 7 transparency electrodes, 8 exit facet transparency electrodes, the circular reflectance coating of 9 planes of incidence, 10 exit facet endless belt reflectance coatings.
Should be appreciated that above-mentioned accompanying drawing just schematically, do not draw in proportion.
Embodiment
The following detailed description of the embodiment of the box-like liquid lens of the saturating back mixing of a kind of annular aperture that the present invention proposes, the present invention is conducted further description.What be necessary to herein means out is; following examples are only described further for the present invention; limiting the scope of the invention can not be interpreted as; this art skilled person makes some nonessential improvement and adjustment according to foregoing invention content to the present invention, still belongs to protection scope of the present invention.
One embodiment of the present of invention are: as shown in Figure 1, and in the present embodiment, the bore of incident panel and outgoing panel is 3mm, and thickness is 100 μm.Reflectance coating selects silverskin, its reflectivity ~ 92%.At the silver-plated film of incident panel outer surface, the region of silver-plated film is the round region of diameter 5mm.The region of the silver-plated film of outgoing panel is endless belt, its external diameter 6mm, internal diameter 5mm.The design parameter of lens body part: the bore of lens housing is 3mm, and thickness is 2mm; Hydrophobic medium thickness ~ 1 μm; Filling liquid I is water white transparency silicone oil, and filling liquid II is NaCl solution.The refractive index of NaCl solution is 1.33, and Abbe number is 55.8.And the refractive index of water white transparency silicone oil is 1.65, Abbe number is 62.8.
The service band that the present embodiment adopts is 456nm-656nm.Voltage is applied to the present invention thus causes liquid-liquid curvature change thus realize the change of focal power.When voltage changes from 0V to 60V, its power variation as shown in Figure 4.In the embodiment of the present invention that it may be noted that, the driving voltage of liquid lens is ~ 35V, and therefore during 0-30V, focal length is also unchanged.
Claims (3)
1. a light path multiple reflections annular aperture formula liquid lens, comprise: incident panel, outgoing panel, shell, dielectric hydrophobic layer, filling liquid I, filling liquid II, sidewall transparency electrode, exit facet transparency electrode, the circular reflectance coating of the plane of incidence, exit facet endless belt reflectance coating, it is characterized in that, incident panel, outgoing panel, shell and dielectric hydrophobic layer composition airtight container, incident panel and outgoing panel are coated with the circular reflectance coating of the plane of incidence and exit facet endless belt reflectance coating respectively, central filler liquid I and filling liquid II, two kinds of liquid are immiscible, there is different refractive indexes, and contact with each other.
2. a kind of light path multiple reflections annular aperture formula liquid lens according to claim 1, it is characterized in that, filling liquid I is silicone oil, and filling liquid II is electrolyte or ionic liquid.
3. a kind of light path multiple reflections annular aperture formula liquid lens according to claim 1, is characterized in that, drive pattern is that electric moistening driving or mechanical wet drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510010780.2A CN104597533A (en) | 2015-01-09 | 2015-01-09 | Annular-aperture transflective mixed type liquid lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510010780.2A CN104597533A (en) | 2015-01-09 | 2015-01-09 | Annular-aperture transflective mixed type liquid lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104597533A true CN104597533A (en) | 2015-05-06 |
Family
ID=53123435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510010780.2A Pending CN104597533A (en) | 2015-01-09 | 2015-01-09 | Annular-aperture transflective mixed type liquid lens |
Country Status (1)
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| CN (1) | CN104597533A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093775A (en) * | 2015-09-05 | 2015-11-25 | 四川大学 | Large-focal-power and small-aberration liquid lens |
| CN107678155A (en) * | 2017-09-30 | 2018-02-09 | 四川大学 | A kind of aspherical electro wetting liquid lens |
| CN107942423A (en) * | 2017-11-12 | 2018-04-20 | 四川大学 | A kind of liquid prism for realizing light beam large deflection angle and translation |
| CN110226124A (en) * | 2016-12-09 | 2019-09-10 | Lg伊诺特有限公司 | Camera model |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005518052A (en) * | 2002-02-14 | 2005-06-16 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Variable focus lens |
| US20070139785A1 (en) * | 2003-05-14 | 2007-06-21 | Koninklijke Philips Electronics N.V. | Variable lens |
| US20080180806A1 (en) * | 2005-04-22 | 2008-07-31 | Koninklijke Philips Electronics, N.V. | Variable Focus Lens |
| CN102466825A (en) * | 2010-11-16 | 2012-05-23 | 中国科学院兰州化学物理研究所 | Electrowetting zoom lens based on ion liquid |
-
2015
- 2015-01-09 CN CN201510010780.2A patent/CN104597533A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005518052A (en) * | 2002-02-14 | 2005-06-16 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Variable focus lens |
| US20070139785A1 (en) * | 2003-05-14 | 2007-06-21 | Koninklijke Philips Electronics N.V. | Variable lens |
| US20080180806A1 (en) * | 2005-04-22 | 2008-07-31 | Koninklijke Philips Electronics, N.V. | Variable Focus Lens |
| CN102466825A (en) * | 2010-11-16 | 2012-05-23 | 中国科学院兰州化学物理研究所 | Electrowetting zoom lens based on ion liquid |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093775A (en) * | 2015-09-05 | 2015-11-25 | 四川大学 | Large-focal-power and small-aberration liquid lens |
| CN105093775B (en) * | 2015-09-05 | 2017-10-20 | 四川大学 | The liquid lens of big focal power and small aberration |
| CN110226124A (en) * | 2016-12-09 | 2019-09-10 | Lg伊诺特有限公司 | Camera model |
| CN110226124B (en) * | 2016-12-09 | 2022-08-02 | Lg伊诺特有限公司 | Camera module, optical apparatus, and method of driving liquid lens |
| US11822095B2 (en) | 2016-12-09 | 2023-11-21 | Lg Innotek Co., Ltd. | Camera module including liquid lens, optical device including the module, and method for driving the liquid lens |
| CN107678155A (en) * | 2017-09-30 | 2018-02-09 | 四川大学 | A kind of aspherical electro wetting liquid lens |
| CN107942423A (en) * | 2017-11-12 | 2018-04-20 | 四川大学 | A kind of liquid prism for realizing light beam large deflection angle and translation |
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Application publication date: 20150506 |