CN106125268A - A kind of liquid lens zoom lens and include its shooting instrument - Google Patents
A kind of liquid lens zoom lens and include its shooting instrument Download PDFInfo
- Publication number
- CN106125268A CN106125268A CN201610654107.7A CN201610654107A CN106125268A CN 106125268 A CN106125268 A CN 106125268A CN 201610654107 A CN201610654107 A CN 201610654107A CN 106125268 A CN106125268 A CN 106125268A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/02—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective
- G02B15/04—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective by changing a part
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- 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
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Abstract
Liquid lens zoom lens according to the present invention and include its shooting instrument, liquid lens zoom lens includes: fix group from first lens with negative power of thing side to image side order arrangement, first focusing group, group fixed by second lens with positive light coke, second focusing group, group fixed by 3rd lens with positive light coke, 3rd focusing group and there are the 4th lens of positive light coke fix group, wherein, group fixed by first lens, group fixed by second lens, group fixed by 3rd lens and the 4th lens are fixed group and included at least one lens respectively, first focusing group, second focusing group and the 3rd focusing group are respectively provided with a liquid lens.
Description
Technical field
The present invention relates to a kind of pick-up lens and include its shooting instrument, particularly relating to a kind of liquid lens varifocal mirror
Head and the shooting instrument including it.
Background technology
In recent years, varifocal optical system rises in the equipment such as photographing unit, video camera, microscope, telescope, spectrophotometer
Vital effect, the change of focal length can be by the movement of lens, the change of refractive index or the change of lens shape
Realize.Liquid lens is namely based on the change of lens shape to realize focal length variations, has that volume is little, response speed fast, consumption
The advantages such as electricity is few, pinpoint accuracy, for auto-focusing and the change in the fields such as medical image, network camera or industrial endoscope
Burnt scheme provides and more preferably selects.In the conventional lenses of tool automatic focusing function, need through machinery moving lens
Group is focused, but liquid lens need not through complicated machinery i.e. can auto-focusing, the principle of utilization is just as people
Eyes the same.Compared with traditional autofocus lens, use the camera lens of liquid lens because having lacked the frame for movement of movement,
Not only be difficult to because of collision or mechanical wear and damage, the life-span is longer compared with conventional lenses, and volume is less, response speed the most more
Hurry up.So that optical design based on liquid lens is to meet imaging demand.
Summary of the invention
The present invention proposes for solving the problems referred to above, it is therefore intended that by changing refractive index or the shape of liquid lens
Shape realizes zoom purpose, it is provided that a kind of liquid lens zoom lens with brand-new zoom mode.
Present invention employs techniques below scheme:
A kind of liquid lens zoom lens, it is characterised in that including: there is negative light Jiao from what thing side to image side order was arranged
Group fixed by first lens of degree, the first focusing group, second lens with positive light coke are fixed group, the second focusing group, just had
3rd lens of focal power are fixed group, the 3rd focusing group and have the 4th lens of positive light coke and fix group, and wherein, first is saturating
Group fixed by mirror, group fixed by the second lens, group fixed by the 3rd lens and the 4th lens are fixed group and included at least one lens respectively,
First focusing group, the second focusing group and the 3rd focusing group are respectively provided with a liquid lens.
The liquid lens zoom lens that the present invention provides, it is also possible to having a feature in that wherein, group fixed by the first lens
Fix group with the 3rd lens and include lens respectively.
The liquid lens zoom lens that the present invention provides, it is also possible to having a feature in that wherein, lens are that sphere is saturating
Mirror.
The liquid lens zoom lens that the present invention provides, it is also possible to have the feature that, also include: diaphragm, this diaphragm
It is arranged on the second focusing group and the 3rd lens are fixed between the light path of group.
The liquid lens zoom lens that the present invention provides, it is also possible to having a feature in that wherein, group fixed by the second lens
Fix group with the 4th lens and be cemented doublet.
The liquid lens zoom lens that the present invention provides, it is also possible to have a feature in that wherein, liquid lens varifocal mirror
Image planes a size of 1/3 inch CCD of head.
The liquid lens zoom lens that the present invention provides, it is also possible to have a feature in that wherein, liquid lens varifocal mirror
Head meets 5 ＜ (vmax-vmin) condition of ＜ 60, vmaxAnd vminIt is the maximum Abbe number of lens in liquid lens zoom lens respectively
With minimum Abbe number.
The liquid lens zoom lens that the present invention provides, it is also possible to have a feature in that wherein, liquid lens varifocal mirror
Head meets the condition of TTL/FW ＜ 25 and FS/FW=6, and in formula, TTL is the entire length of liquid lens zoom lens, and FW is liquid
Body lens camera lens is at the focal length of Radix Rumicis state, and FS is the liquid lens zoom lens focal length in focal length state, also meets wide
Angle end F number 5, telescope end F number 7, the condition of the short burnt angle of visual field 120 °, F be f/d, f be the focal length of liquid lens zoom lens, d is
Entrance pupil diameter.
The liquid lens zoom lens that the present invention provides, it is also possible to have a feature in that wherein, liquid lens varifocal mirror
Head meets nmax-nminThe condition of ＞ 0.5, nmax、nminIt is respectively the largest refractive index and of lens in liquid lens zoom lens
Little refraction rate.
The present invention also provides for a kind of shooting instrument including aforesaid liquid lens camera lens, it is characterised in that: wherein, take the photograph
As instrument is any one in photographing unit, video camera, microscope, telescope, spectrophotometer.
Invention effect and effect
The liquid lens zoom lens provided according to the present invention is based on three groups of liquid lens zoom lens optical designs, logical
Cross the fixing group of interpolation, it is achieved 6 times of zooms and effectively correct aberration, meet blur-free imaging requirement；It is simultaneously based on three groups of liquid lens
Optical design, make full use of liquid lens self and correct mutually the feature of aberration and correct aberration, there is fixing group simple in construction,
Less number of lenses；System allows build-up tolerance relatively large；The advantages such as all eyeglasses all use sphere, and processing cost is low.
Accompanying drawing explanation
Fig. 1 is the liquid lens zoom lens structural representation figure structure schematic representation in wide-angle side of the embodiment of the present invention；
Fig. 2 Fig. 1 is the liquid lens zoom lens structural representation figure structure schematic representation at telescope end of the embodiment of the present invention；
Fig. 3 be in embodiments of the invention liquid lens zoom lens at the curvature of field performance diagram of wide-angle side；
Fig. 4 be in embodiments of the invention liquid lens zoom lens at the distortion performance curve chart of wide-angle side；
Fig. 5 be in embodiments of the invention liquid lens zoom lens at the MTF curve figure of wide-angle side；
Fig. 6 be in embodiments of the invention liquid lens zoom lens at the curvature of field performance diagram of telescope end；
Fig. 7 be in embodiments of the invention liquid lens zoom lens at the distortion performance curve chart of telescope end；
Fig. 8 be in embodiments of the invention liquid lens zoom lens at the MTF curve figure of telescope end.
Detailed description of the invention
Embodiment
The detailed description of the invention of embodiments of the invention is described below in conjunction with accompanying drawing.
Fig. 1 is the liquid lens zoom lens structural representation figure structure schematic representation in wide-angle side of the embodiment of the present invention；
Fig. 2 is the liquid lens zoom lens structural representation figure structure schematic representation at telescope end of the embodiment of the present invention.
As depicted in figs. 1 and 2, liquid lens zoom lens 100 includes arranging the first lens admittedly from thing side to image side order
Surely organize that group the 30, second focusing group 40 fixed by 10, first focusing group the 20, second lens, group 60 fixed by diaphragm 50, the 3rd lens,
Group 80 fixed by three focusing groups 70 and the 4th lens.
First fixed lens group 10 includes a spherical lens with negative power, and it is used for expanding liquid lens zoom
Camera lens 100 is in the angle of visual field of wide-angle side.
Second fixed lens group 30 is to have the cemented doublet of positive burnt luminosity, is used for improving light and becomes through liquid lens
The aberration that zoom lens 100 produces.
Diaphragm 50 is for the size of confine optical beam, and the size of diaphragm changes in zooming procedure between 3mm to 6.5mm.
3rd fixed lens group 60 includes a spherical lens with positive light coke, near diaphragm, can effectively correct
The off-axis aberration such as the curvature of field.
4th fixed lens group 80 is the cemented doublet with positive light coke, is used for improving light and becomes through liquid lens
The aberration that zoom lens 100 produces, it is ensured that image height, corrects residual aberration.
First focusing group 20 is fixed between 10 groups of lens and the second fixed lens group 30 first, the second focusing group 40
Between the second fixed lens group 30 and diaphragm 50, the 3rd focusing group 70 be positioned at the 3rd focusing group 60 and the 4th focusing group 80 it
Between.First focusing group the 20, second focusing group 40 and the 3rd focusing group 70 are liquid lens, can be by changing liquid surface
Curvature realize self focal length variations, thus realize the zoom ratio change of liquid lens zoom lens 100, focal length and the shortest
The change of the ratio of Jiao.The present embodiment uses the liquid lens of Electrowetting, this liquid lens be liquid lens be by two kinds mutually the most not
Mixing and have the liquid composition of different refractivity, both are contained in an one end has inside the short tube of transparent cover plate, pipe interior
Being coated with hydrophobic material on the cover plate of wall and the other end, this makes aqueous solution owing to capillary effect is to not having hydrophobicity
One end of material bent to one hemispherical, by adding DC voltage on two plate electrodes, make liquid surface curvature change, from
And changing the focal length of lens, its zoom principle is similar to the focusing mechanism of human eye.Say from optical property, the focal length of liquid lens
Can in use recur change.The deformability of the contact surface of two kinds of liquid is to affect liquid lens certainly
The key factor of body zoom capabilities, and owing to the size of liquid lens bore limits and the optical surface of two kinds of liquid contacts
Deformability limited, cause the multiplying power excursion of zoom system, pancreatic system to be restricted, and then cause optical designers to liquid
The system of lens camera lens 100 is designed to image a big difficult point of imaging system, the liquid lens bore that this example uses
Size is 5mm, and power variation scope is-0.02mm～0.02mm.In the present embodiment, the liquid lens of the first zoom group 20 is
Zoom use, the liquid lens of the second zoom group 40 is for compensating use, and the liquid lens of the 3rd zoom group 70 can either assist the first change
Burnt group zoom, can correct again aberration.
Fig. 1 and Fig. 2 is respectively liquid lens surface configuration combining form under short Jiao and focal length state between liquid, this reality
Execute example and put on the voltage of liquid lens by change, thus it is possible to vary the focal length of three groups of liquid lens, so that whole system is complete
Become zoom function.Zooming range is determined by liquid lens focal length excursion completely.Three groups of liquid lens focal length changes, liquid
Boundary spheric curvature change, utilizes three groups of liquid lens self to correct aberration.Fig. 1 and Tu.
The liquid lens zoom lens 100 of the present embodiment, meets following condition:
1.TTL/fw < 25, TTL is the camera lens overall length of this liquid lens zoom lens, and fw is this liquid lens zoom lens
At the focal length of wide-angle side, the requirement that lens construction is compact so can be realized；
2.FS/FW=6, ensures to reach 6 times based on liquid lens zoom lens zoom ratio, and FW is liquid lens zoom lens
At the focal length of Radix Rumicis state, FS is the liquid lens zoom lens focal length in focal length state；
3. the image planes of liquid lens zoom lens 100 use 1/3 inch CCD, and areas imaging is bigger.
Each battery of lens of liquid lens zoom lens 100 also needs to meet the condition listed by table 1～2:
Table 1
| Parameter | Wide-angle side | Telescope end |
| EFFL | 5.19mm | 31.16mm |
| WFNO | 4.99 | 7.05 |
| The angle of visual field | 120° | 5.50° |
| Image height | 3mm | 3mm |
In table 1, EFFL represents: effective focal length；
WFNO represents: F number, i.e. f/d, and f is the focal length of liquid lens zoom lens, and d is entrance pupil diameter.
Table 2
The zoom capabilities of the liquid lens zoom lens 100 of the present embodiment is analyzed as follows:
Fig. 3 be in embodiments of the invention liquid lens zoom lens at the curvature of field performance diagram of wide-angle side；
Fig. 4 be in embodiments of the invention liquid lens zoom lens at the distortion performance curve chart of wide-angle side；
Fig. 5 be in embodiments of the invention liquid lens zoom lens at the MTF curve figure of wide-angle side；
Fig. 6 be in embodiments of the invention liquid lens zoom lens at the curvature of field performance diagram of telescope end；
Fig. 7 be in embodiments of the invention liquid lens zoom lens at the distortion performance curve chart of telescope end；
Fig. 8 be in embodiments of the invention liquid lens zoom lens at the MTF curve figure of telescope end.
At the aberration characteristic curve of wide-angle side if Fig. 3 is to shown in 5, at the aberration characteristic curve of telescope end respectively such as Fig. 6 to 8
Shown in.Zoom lens is when wide-angle side, and its liquid lens structure is as it is shown in figure 1, fixing group is constant；Zoom lens is at telescope end
Time, its liquid lens structure is as in figure 2 it is shown, fixing group is constant.Zoom lens is when wide-angle side, and the angle of visual field is 120 °, causes this
Time systematical distortion bigger, but the curvature of field is thrown away in the range of being maintained at-0.10mm-0.10mm.And now polychrome based on diffraction modulation passes
Delivery function (MTF) is as it is shown in figure 5, maximum spatial frequency is 100 cycles/mm, and minimum mtf value throws away holding more than 30%, minimum
Relative illumination is about 71%.So give and conclude a contract or treaty the image diameter of 6mm and the selection of detector can be reached conventional resolution
Requirement.Zooming camera lens when telescope end, meridianal curvature of field value (T) total for Fig. 6 and Sagittal field curvature value (S) all control (-
0.20mm～0.20mm) in the range of, Fig. 7 is visible, and distortion is within 2%, in the optical transfer function (MTF) of Fig. 8, minimum
Mtf value is about 30%, and minimum relative illumination is about 86%.Zooming camera lens is minimum wide-angle side, intermediate ends and telescope end
Relative illumination, is can be received for the detector of prior art.As can be seen here, the aberration of zooming camera lens is equal
Can well be corrected.
The effect of embodiment and effect
The liquid lens zoom lens provided according to the present embodiment, based on three groups of liquid lens zoom lens optical designs,
By adding fixing group, it is achieved 6 times of zooms and effectively correct aberration, meet blur-free imaging requirement.It is simultaneously based on three groups of liquid saturating
The optical design of mirror, makes full use of liquid lens self and corrects mutually the feature rectification aberration of aberration, have fixing group structure letter
Single, less number of lenses；System allows build-up tolerance relatively large；The advantages such as all eyeglasses all use sphere, and processing cost is low；
Again due to the TTL/fw < 25 of the present embodiment, the requirement that liquid lens Zoom lens structure is compact so can be realized.
Although above the detailed description of the invention of description of the invention being described, in order to the technology of the art
Personnel understand the present invention, the common skill it should be apparent that the invention is not restricted to the scope of detailed description of the invention, to the art
From the point of view of art personnel, as long as various change limits and in the spirit and scope of the present invention that determine in appended claim, these
Change is apparent from, and all utilize the innovation and creation of present inventive concept all at the row of protection.
Claims (10)
1. a liquid lens zoom lens, it is characterised in that including:
Fix group, the first focusing group from first lens with negative power of thing side to image side order arrangement, there is positive light Jiao
Group fixed by second lens of degree, the second focusing group, the 3rd lens with positive light coke are fixed group, the 3rd focusing group and have
Group fixed by 4th lens of positive light coke,
Wherein, group fixed by described first lens, group fixed by described second lens, group and the described 4th fixed by described 3rd lens
Lens are fixed group and are included at least one lens respectively,
Described first focusing group, described second focusing group and described 3rd focusing group are respectively provided with a liquid lens.
2. liquid lens zoom lens as claimed in claim 1, it is characterised in that:
Wherein, the fixing group of described first lens and described 3rd lens are fixed group and are included lens respectively.
3. liquid lens zoom lens as claimed in claim 1, it is characterised in that:
Wherein, described lens are spherical lens.
4. liquid lens zoom lens as claimed in claim 1, it is characterised in that also include:
Diaphragm, this diaphragm is arranged on described second focusing group and described 3rd lens are fixed between the light path of group.
5. liquid lens zoom lens as claimed in claim 1, it is characterised in that:
Wherein, the fixing group of described second lens and described 4th lens are fixed group and are cemented doublet.
6. liquid lens zoom lens as claimed in claim 1, it is characterised in that:
Wherein, image planes a size of 1/3 inch CCD of described liquid lens zoom lens.
7. liquid lens zoom lens as claimed in claim 1, it is characterised in that:
Wherein, described liquid lens zoom lens meets 5 ＜ (vmax-vmin) condition of ＜ 60,
vmaxAnd vm i nIt is the maximum Abbe number of lens in liquid lens zoom lens and minimum Abbe number respectively.
8. liquid lens zoom lens as claimed in claim 1, it is characterised in that:
Wherein, described liquid lens zoom lens meets the condition of TTL/FW ＜ 25 and FS/FW=6,
In formula, TTL is the entire length of described liquid lens zoom lens, and FW is that described liquid lens zoom lens is at Radix Rumicis shape
The focal length of state, FS is the described liquid lens zoom lens focal length in focal length state,
Also meet wide-angle side F number 5, telescope end F number 7, the condition of the short burnt angle of visual field 120 °,
F be f/d, f be the focal length of described liquid lens zoom lens, d is entrance pupil diameter.
9. liquid lens zoom lens as claimed in claim 1, it is characterised in that:
Wherein, described liquid lens zoom lens meets nmax-nminThe condition of ＞ 0.5, nmax、nminIt is respectively liquid lens zoom
The largest refractive index of lens and minimum refractive index in camera lens.
10. the shooting instrument of the liquid lens zoom lens that a kind includes as described in claim 1 to 9, it is characterised in that:
Wherein, described shooting instrument is any one in photographing unit, video camera, microscope, telescope, spectrophotometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610654107.7A CN106125268B (en) | 2016-08-11 | 2016-08-11 | A kind of liquid lens zoom lens and the camera shooting instrument including it |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610654107.7A CN106125268B (en) | 2016-08-11 | 2016-08-11 | A kind of liquid lens zoom lens and the camera shooting instrument including it |
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| Publication Number | Publication Date |
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| CN106125268A true CN106125268A (en) | 2016-11-16 |
| CN106125268B CN106125268B (en) | 2018-08-31 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109471251A (en) * | 2019-01-10 | 2019-03-15 | 厦门爱劳德光电有限公司 | A kind of near-infrared zoom lens of embedded liquid lens subassembly |
| CN110221418A (en) * | 2019-07-16 | 2019-09-10 | 厦门爱劳德光电有限公司 | A kind of scanning autofocus lens that liquid lens component is preposition |
| WO2019205789A1 (en) * | 2018-04-23 | 2019-10-31 | 华为技术有限公司 | Lens system, lens, camera module and electronic device |
| CN110709746A (en) * | 2017-04-05 | 2020-01-17 | 康宁股份有限公司 | Liquid lens control system and method |
| US11570338B2 (en) | 2019-09-27 | 2023-01-31 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Light-concentrating device, light-concentrating display screen, and mobile electric product |
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| US20090034093A1 (en) * | 2007-08-01 | 2009-02-05 | Masahiro Katakura | Two-unit zoom lens system and image pickup apparatus using the same |
| JP2011099924A (en) * | 2009-11-04 | 2011-05-19 | Nikon Corp | Zoom lens system, optical device, method for manufacturing zoom lens system |
| CN102346293A (en) * | 2010-07-30 | 2012-02-08 | 株式会社尼康 | Zooming lens, optical apparatus and method of manufacturing zooming lens |
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| US20090034093A1 (en) * | 2007-08-01 | 2009-02-05 | Masahiro Katakura | Two-unit zoom lens system and image pickup apparatus using the same |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110709746A (en) * | 2017-04-05 | 2020-01-17 | 康宁股份有限公司 | Liquid lens control system and method |
| CN110709732A (en) * | 2017-04-05 | 2020-01-17 | 康宁股份有限公司 | Liquid lens control system and method |
| CN110709746B (en) * | 2017-04-05 | 2022-02-01 | 康宁股份有限公司 | Liquid lens control system and method |
| US11474284B2 (en) | 2017-04-05 | 2022-10-18 | Corning Incorporated | Liquid lens control systems and methods |
| US11822100B2 (en) | 2017-04-05 | 2023-11-21 | Corning Incorporated | Liquid lens control systems and methods |
| US11960104B2 (en) | 2017-04-05 | 2024-04-16 | Corning Incorporated | Liquid lens feedback and control |
| WO2019205789A1 (en) * | 2018-04-23 | 2019-10-31 | 华为技术有限公司 | Lens system, lens, camera module and electronic device |
| CN109471251A (en) * | 2019-01-10 | 2019-03-15 | 厦门爱劳德光电有限公司 | A kind of near-infrared zoom lens of embedded liquid lens subassembly |
| CN109471251B (en) * | 2019-01-10 | 2024-02-06 | 厦门爱劳德光电有限公司 | Near infrared zoom lens with embedded liquid lens component |
| CN110221418A (en) * | 2019-07-16 | 2019-09-10 | 厦门爱劳德光电有限公司 | A kind of scanning autofocus lens that liquid lens component is preposition |
| CN110221418B (en) * | 2019-07-16 | 2023-11-28 | 厦门爱劳德光电有限公司 | Front-mounted automatic focusing lens for scanning of liquid lens assembly |
| US11570338B2 (en) | 2019-09-27 | 2023-01-31 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Light-concentrating device, light-concentrating display screen, and mobile electric product |
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