CN108732728A - A kind of lens system and camera lens - Google Patents
A kind of lens system and camera lens Download PDFInfo
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- CN108732728A CN108732728A CN201810368607.3A CN201810368607A CN108732728A CN 108732728 A CN108732728 A CN 108732728A CN 201810368607 A CN201810368607 A CN 201810368607A CN 108732728 A CN108732728 A CN 108732728A
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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
- G02B3/00—Simple or compound lenses
- G02B3/12—Fluid-filled or evacuated lenses
- G02B3/14—Fluid-filled or evacuated lenses of variable focal length
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Abstract
A kind of lens system and camera lens, to solve the problems, such as that VCM realizes that caused image quality is deteriorated when focusing in the prior art.In the application, the lens system includes focal length lens group and liquid lens；The focal length lens group includes the first fixed lens group and the second fixed lens group successively from the object side to image side along optical axis；The liquid lens is between the arbitrary side or first fixed lens group and the second fixed lens group that optical axis direction is located at the focal length lens group.Liquid lens is arranged in lens system, need to only change the voltage of liquid lens both sides, and focal length may be implemented and can be changed, do not need the lens in moving long focus lens group, can ensure the clear of imaging.
Description
Technical field
This application involves technical field of electronic devices more particularly to a kind of lens system and camera lenses.
Background technology
Development scientific and technological at any time is integrated with more and more functions in smart electronics product, wherein relatively conventional is to clap
According to function, and with the promotion of the miniaturization of sensitive chip size, resolution ratio and image quality, the lens that are arranged in smart electronics product
System more levels off to the small-pitch compact imaging lens system of each lens, but for compact imaging lens system in order to
Ensure imaging clearly, needs focal length variable, and then realize focusing.
Currently, realizing that focal length is variable in lens system mainly passes through voice coil motor (voice coli motor, VCM)
Each lens in lens system are adjusted to the realization of the distance between sensitive chip.
VCM is a kind of device converting electrical energy into mechanical energy, is produced using the magnetic field and hot-wire coil conductor of permanent magnet
Effect of the raw magnetic field to magnetic pole generates movement, so that magnetic pole drive lens do the movement of linear type and limited pivot angle.
In the scheme for realizing focusing using VCM, VCM can drive the lens in lens system integrally to move up and down, and make
It obtains camera lens and easy tos produce inclination, be unfavorable for being imaged, the image quality for eventually leading to lens system is deteriorated.
Invention content
The application provides a kind of lens system and camera lens, to solve when VCM in the prior art realizes focusing it is caused at
As the problem of degradation.
In a first aspect, the embodiment of the present application provides a kind of lens system, the lens system include focal length lens group and
Liquid lens；Wherein, the focal length lens group along optical axis from the object side to image side can successively include the first fixed lens group and
Second fixed lens group；The liquid lens can be located at the arbitrary side of the focal length lens group along optical axis direction or be located at
Between first fixed lens group and the second fixed lens group.Since the liquid lens is arranged in lens system, so
By the voltage for changing liquid lens both sides, so that it may to realize that focal length is variable, and no longer need saturating in moving long focus lens group
Mirror, therefore the clarity of imaging can be effectively ensured.
A kind of possible embodiment, the lens system can also include prism group, and the prism group is along optical axis direction
Side of the focal length lens group towards object side can be located at.In this way by increasing prism group, light can be changed in lens system
Circulation way in system so that the application range of lens system is more extensive.
A kind of possible embodiment, if the liquid lens is located at the focal length lens group towards object side along optical axis direction
Side, then the prism group can be between the focal length lens group and the liquid lens along optical axis direction.By institute
Prism group is stated along optical axis direction between the focal length lens group and the liquid lens, the prism group described in this way can conduct
The substrate of liquid lens need not be further added by the substrate for additionally serving as supporting the liquid lens, therefore can preferably control
The volume size of lens system.
The refracting power of a kind of possible embodiment, the liquid lens can be positive number, then the song of the liquid lens
Rate variation range can be 0 to 0.1 between.The liquid lens described in this way can be convex lens, and convergence can be played to light
Effect, the curvature of liquid lens changes the focal length that can be used for changing lens system in setting range, and then realizes focusing.
The refracting power of a kind of possible embodiment, the liquid lens may be negative, then the liquid lens
Curvature varying may range between -0.1 to 0.The liquid lens described in this way can also be concavees lens, and hair can be played to light
Effect is dissipated, the curvature of liquid lens changes the focal length that can be used for changing lens system in setting range, and then realizes focusing.
A kind of possible embodiment, first fixed lens group can include successively from the object side to image side along optical axis
First lens and the second lens；Second fixed lens group can include that third is saturating successively from the object side to image side along optical axis
Mirror, the 4th lens and the 5th lens；Wherein, the refracting power of first lens and the 4th lens can be positive number, described second
The refracting power of lens, the third lens and the 5th lens can be negative.By the above-mentioned means, focal length lens group can include more
A lens, multiple lens combinations can achieve the effect that preferable aberration correction and aberration.
A kind of possible embodiment, first lens towards object side surface can be convex surface, the third lens,
The surface of 4th lens and the 5th lens towards object side can be concave surface, and the surface of second lens towards image side can be recessed
Face.When light is by the surfaces of each lens in this way, since each lens surface meets above-mentioned shape, so that it may so that light
It finally can preferably project in the image planes of lens system, and then form preferable presentation effect.
Some or all of in a kind of possible embodiment, the focal length lens group can meet in following condition,
In, V1 is the Abbe number of first lens, and V2 is the Abbe number of second lens, and V3 is the Abbe of the third lens
Number, V4 are the Abbe number of the 4th lens, and V5 is the Abbe number of the 5th lens：
330<V1-V2<35；30<V1-V4<35；30<V1-V5<35；30<V3-V4<35；30<V3-V5<35；30<V3-V2
<35；
By the above-mentioned means, the Abbe number difference of lens can be guaranteed at specific range intervals so that each lens
Degree of dispersion preferably match, and then can preferably calibrate the aberration that aberration and light generate, be further ensured that imaging is clear
Clear degree.
The Abbe number of a kind of possible embodiment, first lens and the third lens can be identical, and described
The Abbe number of two lens, the 4th lens and the 5th lens can also be identical.
Second aspect, the embodiment of the present application provide a kind of camera lens, and the camera lens includes diaphragm and above-mentioned first aspect
And the lens system described in any one embodiment.
The third aspect, the embodiment of the present application provide a kind of camera module, and the camera module includes sensitive chip
And the camera lens provided in above-mentioned second aspect.
Fourth aspect, the embodiment of the present application provide a kind of electronic equipment, the electronic equipment include processor and
Photographic device, the photographic device include the lens system described in above-mentioned first aspect and any one embodiment；Wherein,
The processor is saturating to change the liquid for controlling the voltage on the liquid lens being loaded into the lens system
The curvature of mirror.
Description of the drawings
Fig. 1 is the structural schematic diagram of the first lens system provided by the present application；
Fig. 2 is the structural schematic diagram of second of lens system provided by the present application；
Fig. 3 is the structural schematic diagram of the third lens system provided by the present application；
Fig. 4 A are the structural schematic diagram of the 4th kind of lens system provided by the present application；
Fig. 4 B are the structural schematic diagram of the 5th kind of lens system provided by the present application；
Fig. 4 C are the structural schematic diagram of the 6th kind of lens system provided by the present application；
Fig. 5 is the structural schematic diagram of focal length lens group provided by the present application；
Fig. 6 is the structural schematic diagram of the 7th kind of lens system provided by the present application；
Fig. 7 is the structural schematic diagram of the 8th kind of lens system provided by the present application；
Fig. 8 is the structural schematic diagram of the 9th kind of lens system provided by the present application；
Fig. 9 is a kind of structural schematic diagram of camera lens provided by the present application；
Figure 10 is a kind of structural schematic diagram of camera module provided by the present application；
Figure 11 is the structural schematic diagram of a kind of electronic equipment provided by the present application.
Specific implementation mode
First, the part term in the application is explained, to make those skilled in the art understand that.
1), liquid lens is made of film package liquid, by changing the voltage of liquid lens both sides, can make liquid
The curvature of body lens occurs, and then changes focal length.
2), refracting power (refractive power), the convergence for characterizing lens on light line or disperse function can use coke
Away from it is reciprocal indicate, when refracting power is timing, indicates that lens on light line has converging action, be convex lens；When refracting power is negative,
Expression has disperse function to light, is concavees lens.
3), Abbe number, the Abbe number of lens are the abbe numbers of the lens, refer to the refraction of lens at different wavelengths
The difference ratio of rate, the degree of dispersion for characterizing lens.
4), refractive index is used to indicate the extent of refraction of lens on light, incidence angle when being according to rays pass through lens and folding
What firing angle determined.
5), multiple, refer to two or more.
The embodiment of the present application provides a kind of lens system, can be applied to include focal length lens group lens system, change
The focal length of elongated focus lens group realizes focusing.The lens system can be applied to have in the optical system of imaging function, example
Such as telescope, periscope；It can also be applied in the electronic equipment with camera function, such as camera, camera, mobile phone, flat
The lens system application scenarios are not limited in plate apparatus such as computer, in the embodiment of the present application, above description is only citing.
Specifically, the lens system may include focal length lens group and liquid lens；The focal length lens group can wrap
Containing two groups of lens groups, two groups of lens groups match synthesized image, and the focal length lens group includes successively from the object side to image side along optical axis
First fixed lens group and the second fixed lens group.
Liquid lens be placed on include focal length lens group lens system in, the placement location of the liquid lens can be with
There are many, for example, the liquid lens is located at the arbitrary side of the focal length lens group along optical axis direction, in another example, the liquid
Body lens are along optical axis direction between first fixed lens group and the second fixed lens group.
Specifically, the liquid lens is there are three kinds of possible positions, position one, the liquid lens is along optical axis direction position
In the focal length lens group towards the side of object side；Position two, the liquid lens are located at the long focus lens along optical axis direction
Side of the group towards image side；Position three, the liquid lens are located at first fixed lens group and second along optical axis direction and consolidate
Between fix-focus lens group.These three situations are introduced separately below.
Position one, the liquid lens are located at side of the focal length lens group towards object side along optical axis direction.
As shown in Figure 1, being a kind of lens system provided by the embodiments of the present application, the lens system 100 includes that focal length is saturating
Microscope group 101 and liquid lens 102；
The focal length lens group 101 includes the first fixed lens group 103 and second successively from the object side to image side along optical axis
Fixed lens group 104；
The liquid lens 102 is located at side of the focal length lens group 101 towards object side along optical axis direction.
In lens system as shown in Figure 1, changes the voltage on the outside of liquid lens, make the curvature of liquid lens that can occur
Variation, so that the focal length of entire lens system changes, and the position for two fixed lens groups for including in focal length lens group
Immobilize, will not be mobile there is a situation where lens or tilt, so can to avoid being moved due to lens caused by be imaged
The problem of variation.
Voltage change on the outside of liquid lens realizes Curvature varying, and the voltage in outside can be symmetrically the same, also may be used
To be symmetrical different；When outside, voltage symmetry is identical, and the even variation of liquid lens curvature may be implemented；When the voltage in outside
When symmetrical different, liquid lens curvature and non-uniform change, the direction of light can be changed so that focus is at an angle
It moves, it, can be by applying different voltage on the outside of liquid lens, changing bifocal when lens system, which exists, shakes
Position can also avoid the problem that being deteriorated due to shaking the imaging brought.
Optionally, it is supported to give the liquid lens to increase, optical filter, substrate of glass can be increased in lens system
Or other assemblies, the substrate as liquid lens.
Position two, the liquid lens along optical axis direction be located at first fixed lens group and the second fixed lens group it
Between.
As shown in Fig. 2, being a kind of lens system provided by the embodiments of the present application, the lens system 200 includes that focal length is saturating
Microscope group 201 and liquid lens 202.
The focal length lens group includes the first fixed lens group 203 and second successively from the object side to image side along 201 optical axis
Fixed lens group 204.
The liquid lens 202 is located at first fixed lens group, 203 and second fixed lens group 204 along optical axis direction
Between.
In lens system as shown in Figure 2, liquid lens is placed on the inside of focal length lens group, can be with using liquid lens
It realizes that focal length is variable, while the gap in focal length lens group between two fixed lens groups can be efficiently used, it may further
The area that effectively control lens system occupies.
Position three, the liquid lens are located at side of the focal length lens group towards image side along optical axis direction.
As shown in figure 3, being a kind of lens system provided by the embodiments of the present application, the lens system 300 includes that focal length is saturating
Microscope group 301 and liquid lens 302.
The focal length lens group includes the first fixed lens group 303 and second successively from the object side to image side along 301 optical axis
Fixed lens group 304.
The liquid lens 302 is located at side of the focal length lens group 301 towards image side along optical axis direction.
Likewise, liquid lens is increased in focal length lens group, it need to only change the voltage on the outside of liquid lens, so that it may with
It realizes that focal length is variable, does not need the lens in moving long focus lens group, can ensure the clear of imaging.
Optionally, it is supported to give the liquid lens to increase, optical axis direction can be prolonged towards image side in liquid lens
Side increases optical filter, substrate of glass or other assemblies, the substrate as liquid lens.
It is the coke that lens system is realized by the curature variation of liquid lens in lens system as shown in Figures 1 to 3
Away from can be changed, in practical applications, the lens of focal length lens group need not be moved, that is to say, that in lens system design,
The space that lens movement need not be reserved, can effectively reduce the area occupied of lens system.
A kind of possible embodiment, the lens system can also include prism group, and the prism group is along optical axis direction
Positioned at the focal length lens group towards the side of object side.
Prism group is set in lens system, the direction of propagation of light can be changed so that the application of the lens system
Range is more extensive, such as applied to periscope, scouting field etc..
The prism group is located at side of the focal length lens group towards object side along optical axis direction, can enter institute in light
Make light that the turnover of certain angle occur when stating lens system.
Corresponding to three kinds of different locations of liquid lens, when in lens system further including prism group, there are following three kinds
Situation, it should be noted that can include multiple prisms in prism group, realize the multiple turnover of light, the application is with prism group
In comprising similar the case where illustrating for a prism, can include multiple prisms in prism group, details are not described herein again.
Situation one, as shown in Figure 4 A, the lens system 400 include focal length lens group 401, liquid lens 402 and rib
Microscope group 403.
The focal length lens group 401 includes the first fixed lens group 404 and second successively from the object side to image side along optical axis
Fixed lens group 405.
The liquid lens 402 is located at side of the focal length lens group 401 towards object side along optical axis direction；The prism
Group 403 is along optical axis direction between the focal length lens group 401 and the liquid lens 402.
Such as Fig. 4 A, the focal length that lens system may be implemented in the setting of the liquid lens is variable, and the prism group can change
Become the direction of propagation of light, and the liquid lens is located at the side of the prism group, the liquid lens can be with the rib
The side of microscope group is substrate, does not need substrate of the additional component as the liquid lens so that the occupancy face of lens system
Product becomes smaller.
Situation two, as shown in Figure 4 B, the lens system 400 include focal length lens group 401, liquid lens 402 and rib
Microscope group 403.
The focal length lens group 401 includes the first fixed lens group 404 and second successively from the object side to image side along optical axis
Fixed lens group 405.
The liquid lens 402 is located at first fixed lens group, 404 and second fixed lens group 405 along optical axis direction
Between.The prism group 402 is located at side of the focal length lens group 401 towards object side along optical axis direction.
Such as Fig. 4 C, the liquid lens is arranged in focal length lens group, and the focal length that lens system both may be implemented is variable,
The gap in focal length lens group can be efficiently used, so that the area occupied of lens system becomes smaller.
Situation three, as shown in Figure 4 C, the lens system 400 include focal length lens group 401, liquid lens 402 and rib
Microscope group 403.
The focal length lens group 401 includes the first fixed lens group 404 and second successively from the object side to image side along optical axis
Fixed lens group 405.
The liquid lens 402 is located at side of the focal length lens group 401 towards image side along optical axis direction；The prism
Group 402 is located at side of the focal length lens group 401 towards object side along optical axis direction.
About can include multiple lens in lens system provided by the embodiments of the present application in the focal length lens group for including.
Specifically, as shown in figure 5, being a kind of focal length lens group provided by the embodiments of the present application, focal length lens group edge
401 optical axis include the first fixed lens group 501 and the second fixed lens group 502 successively from the object side to image side.
First fixed lens group 501 includes that the first lens 503 and second are saturating successively from the object side to image side along optical axis
Mirror 504.
Described second fixes 502 groups of lens along optical axis from the object side to image side successively including the third lens 505, the 4th lens
506 and the 5th lens 507.
Wherein, the refracting power of first lens, 503 and the 4th lens 506 is positive number, the second lens 504, the third lens
505 and the 5th lens 507 refracting power be negative.
That is, first lens and the 4th lens are convex lens, the second lens, the third lens and the 5th lens are
Concavees lens.
Since convex lens and concavees lens are there are many different shapes, such as convex lens has a biconvex lens, planoconvex spotlight and
Concave-convex lens, concavees lens have biconcave lens, plano-concave lens and concave-convex lens.The first lens, the second lens, are not limited herein
The concrete shape of three lens, the 4th lens and the 5th lens, every refracting power requirement that disclosure satisfy that each lens, and being capable of structure
The lens for focus lens system of growing up are suitable for the embodiment of the present application.
Specifically, the surface of first lens towards object side is convex surface, the third lens, the 4th lens and the 5th lens court
It is concave surface to the surface of object side, the surface of second lens towards image side is concave surface.
That is, the first lens can be biconvex lens, it can also be planoconvex spotlight, can also be meniscus, only
Need to be convex surface towards the surface of object side；Second lens can be biconcave lens, can also be plano-concave lens, in can also be
The centre part meniscus thinner than marginal portion only need to be concave surface towards the surface of image side；4th lens can be center
The part concave-convex lens thicker than marginal portion, the surface towards object side are concave surface, and the surface towards image side is convex surface；The third lens
It can be biconcave lens with the 5th lens, can also be plano-concave lens, can also be the center portion convex-concave thinner than marginal portion
Lens only need to be concave surface towards the surface of object side.
Specifically, the Abbe number V1 of first lens, the Abbe number V2 of second lens, the third lens Ah
Shellfish number V3, the Abbe number V5 of the Abbe number V4 of the 4th lens, the 5th lens can meet the part in following condition
Or all：
Condition one, 30<V1-V2<35；Condition two, 30<V1-V4<35；Condition three, 30<V1-V5<35；Condition four, 30<
V3-V4<35；Condition five, 30<V3-V5<35；Condition six, 30<V3-V2<35.
In specific implementation, condition one can be met one or more of to condition six, the Abbe number of two lens is poor
Value can make the degree of dispersion of two lens preferably match, and then can preferably calibrate between specific range
Aberration and light aberration, may further ensure imaging clearly.
Optionally, the Abbe number for each lens for including in focal length lens group may be the same or different, can also portion
Split-phase is same.
The Curvature varying range of the liquid lens is larger, enables to the adjustable focal range of the lens system more
Greatly, the scope of application of the lens system is widened.
Optionally, the refracting power of the liquid lens be positive number, the Curvature varying ranging from 0 to 0.1 of the liquid lens,
That is, liquid lens is convex lens, the shape of liquid lens is not limited herein, every refracting power is the liquid of positive number
Lens are suitable for the embodiment of the present application, and the Curvature varying range of the liquid lens is larger, enables to the lens system
Adjustable focal range bigger, widens the scope of application of the lens system.
Convex lens has converging action to light so that can be with by the light for the liquid lens that refracting power is positive number
More is transferred on subsequent component, improves the image quality of lens system.
Optionally, the refracting power of the liquid lens is negative, and the Curvature varying ranging from -0.1 of the liquid lens arrives
0, that is to say, that the liquid lens is concavees lens, is not limited the shape of the liquid lens herein, every refracting power is
The liquid lens of negative is suitable for the embodiment of the present application.
Concavees lens have disperse function to light so that by the light projection for the liquid lens that refracting power is negative
Range become larger, the aberration that light is generated due to dispersion can also be reduced.
Specifically, being directed to the first lens, if the focal length of the first lens is f1, the focal length of lens system is F, then f1 and F is full
The following condition of foot：
0.1<f1/F<0.8
The vertex curvature radius of first lens object side is R1, and the vertex curvature radius of image side is that R2, R1 and R2 satisfaction are as follows
Condition：
-1.0<R1/R2<0
For the second lens, if the focal length of the second lens is f2, the focal length of lens system is F, then f2 and F meets following item
Part：
-0.8<f2/F<-0.1
The vertex curvature radius of second lens object side is R3, and the vertex curvature radius of image side is that R4, R3 and R4 satisfaction are as follows
Condition：
-100<R3/R4<100
For the third lens, if the focal length of the third lens is f3, the focal length of lens system is F, then f3 and F meets following item
Part：
-0.8<f3/F<-0.1
The vertex curvature radius of the third lens object side is R5, and the vertex curvature radius of image side is that R6, R5 and R6 satisfaction are as follows
Condition：
-100<R5/R6<100
For the 4th lens, if the focal length of the 4th lens is f4, the focal length of lens system is F, then f4 and F meets following item
Part：
0.1<f4/F<0.8
The vertex curvature radius of 4th lens object side is R7, and the vertex curvature radius of image side is that R8, R7 and R8 satisfaction are as follows
Condition：
-100<R7/R8<100
For the 5th lens, if the focal length of the 5th lens is f5, the focal length of lens system is F, then f5 and F meets following item
Part：
-0.8<f5/F<-0.1
The vertex curvature radius of 5th lens object side is R9, and the vertex curvature radius of image side is that R10, R9 and R10 meet such as
Lower condition：
-100<R5/R6<100
It should be noted that vertex curvature radius refers to the radius of curvature at peak, object side on a side of lens
Vertex curvature radius be radius of curvature in one side of the lens towards object side at peak, the vertex curvature radius of image side is
Radius of curvature of the minute surface in the one side of image side at peak；If curved surface is convex surface, the vertex difference radius in the face is positive number,
If plane when curved surface, the vertex curvature radius in the face is infinity, if curved surface is concave surface, the vertex difference radius in the face is
Negative；The focal length of the focal length of said lens system and each lens carries sign.
It the size of focal length and positive and negative is calculated using formula 1/U+1/V=1/F, wherein U is object distance, and V is apart that F is
The focal length of lens, if image homonymy, U and V are positive number；If image heteropleural, U is positive number, and V is negative.
The Abbe number V1 of a kind of possible embodiment, the first lens and the third lens can be 55.987；Second lens,
The Abbe number V2 of 4th lens and the 5th lens can be 21.514.
For the application there is provided a kind of camera lens, the camera lens can include the lens system that any of the above-described embodiment provides.
Three kinds of specific lens systems are set forth below：
The first, as shown in fig. 6, the lens system 600 includes focal length lens group 601, liquid lens 602 and prism
Group 603；The liquid lens 602 is located at side of the focal length lens group 601 towards object side along optical axis direction；The prism group
603 along optical axis direction between the focal length lens group 601 and the liquid lens 602；The focal length lens group 601 is along light
Axis includes the first fixed lens group 604 and the second fixed lens group 605 successively from the object side to image side；Described first fixes lens
Group 604 includes the first lens 606 and the second lens 607 successively from the object side to image side along optical axis；Described second fixes lens 605
Group includes the third lens 608, the 4th lens 609 and the 5th lens 610 successively from the object side to image side along optical axis.
Further include aperture diaphragm 611 and IR optical filters 612 in the lens system 600；Aperture diaphragm 611 is along optical axis direction
Between the first lens 606 and the second lens 607, IR optical filters 612 are located at the 5th lens 610 towards image side along optical axis direction
Side.
It is the parameters of lens system as shown in table 1A.
Table 1A
| Focal length | 12mm |
| F values | 2.6 |
| Half FOV | 12.5° |
| Total track length | 10.867mm |
| Wave-length coverage | Limit of visible spectrum |
Wherein, F values indicate that the value of focal length and stop opening size, F values can be used for characterizing the thang-kng amount of lens system；With
Lens system is vertex, can be by the angle that two edges of the maximum magnitude of lens system are constituted with the image of measured target
Field angle (field of view, FOV), field angle are used to characterize the field range of lens system, and half FOV is the one of field angle
Half；Total track length (total track length, TTL) refers to from first composition lens of lens system to the length of image planes
Degree；The applicable wave-length coverage of lens system is limit of visible spectrum, about 620nm~450nm.
Specifically, the shape of each lens, material, refracting power and Abbe number parameter as shown in table 1B.
Table 1B
Wherein, it is starting from the object plane of lens system, from object in order to distinguish curved surface of each lens towards object side and image side
Side to image side, successively the curved surface of the various components of duplet lens system be numbered, in order to reach better imaging effect,
The aperture diaphragm and optical filter of control thang-kng amount are increased in lens system, the optical filter chosen in the present embodiment filters for IR
Device (infrared color filter, infrared fileter), IR optical filters refer to the device that can filter out the infrared ray in light
Part, aperture diaphragm correspond to a face, and each lens and IR optical filters correspond to two curved surfaces respectively；Wherein, object plane, aperture diaphragm with
And the corresponding face shape of IR optical filters is FLAT (plane), radius is INF (infinity, infinitely great)；Each lens are corresponding
The shape of curved surface is ASP (aspher, aspherical), and subsequent corrosion is vertex curvature radius.
In one column of thickness or interval, each lens correspond to two values, the thickness of first numerical value expression lens, second
Numerical value indicates the central point of curved surface the distance between of the lens towards the center of surface point of image side to next component towards object side,
Unit is millimeter；By taking liquid lens as an example, first numerical value is 0.005, indicates that the thickness of liquid lens is 0.005mm, second
A numerical value is 0.5, indicates that the distance between center of surface point of the curved surface 2 of liquid lens and the curved surface 3 of prism is 0.5mm.
Wherein, aperture diaphragm only corresponds to a curved surface, and the numerical value in thickness or interval indicates the corresponding curved surface of aperture grating 7
For central point at a distance from 8 central point of curved surface of the second lens, distance is that negative value indicates that the curved surface 8 of the second lens protrudes into the hole
In the aperture of diameter diaphragm.
For the material of the various components of lens system, liquid lens is to be wrapped in what liquid was formed by film, and outside is
Film, inside are liquid；Glass may be used in prism in lens system, and plastics may be used in other lenses.
For liquid lens, since the liquid lens has the film in outside and internal liquid to constitute, therefore record respectively
The refractive index and Abbe number of two external films and internal liquid, wherein 1.41 and 49.9 be respectively the two external films of liquid lens
Refractive index and Abbe number, 1.29 and 108.5 be respectively the refractive index and Abbe number of liquid in liquid lens.
Specifically, the asphericity coefficient for five lens for including in focal length lens group is as shown in table 1C, wherein S indicates each
The label of a lens curved surface, R indicate that radius of curvature, K indicate that circular cone coefficient, A indicate that 4 rank asphericity coefficients, B indicate 6 rank aspheric
Face coefficient, C indicate that 8 rank asphericity coefficients, D indicate 10 rank asphericity coefficients.
Table 1C
Second, as shown in fig. 7, the lens system 700 includes focal length lens group 701, liquid lens 702；The length
Focus lens group 701 includes the first fixed lens group 703 and the second fixed lens group 704 successively from the object side to image side along optical axis；
First fixed lens group 703 includes the first lens 705 and the second lens 706 successively from the object side to image side along optical axis；Institute
It includes the third lens 707, the 4th lens 708 and the 5th successively from the object side to image side that 704 groups of the second fixation lens, which are stated, along optical axis
Lens 709.The liquid lens 702 is located at first fixed lens group, 703 and second fixed lens group 704 along optical axis direction
Between.
Wherein, further include aperture diaphragm 710 and IR optical filters 711；Aperture diaphragm 710 is located at the first lens along optical axis direction
705 and second between lens 706, and IR optical filters 711 are located at side of the 5th lens 709 towards image side along optical axis direction.
As set forth in table 2, it is the parameters of lens system.
Table 2A
| Focal length | 12mm |
| F values | 2.6 |
| Half FOV | 12.5° |
| Total track length | 11.475mm |
| Design wavelength | Limit of visible spectrum |
Wherein, the meaning that table 2A parameters indicate sees that details are not described herein again referring to the associated description to table 1A.
Specifically, the shape of each lens, material, refracting power and Abbe number parameter as shown in table 2B.
Table 2B
Wherein, in order to support liquid lens, increase a substrate of glass in the side of liquid lens towards image side.Glass
The corresponding curved surface number of glass substrate is 8 and 9.The meaning of parameters expression is seen referring to the associated description to table 1B in table 2B, this
Place repeats no more.
Table 2C
The third, as shown in figure 8, the lens system 800 includes focal length lens group 801, liquid lens 802；The liquid
Body lens 802 are located at side of the focal length lens group 801 towards image side along optical axis direction；The focal length lens group 801 is along light
Axis includes the first fixed lens group 803 and the second fixed lens group 804 successively from the object side to image side；Described first fixes lens
Group 803 includes the first lens 805 and the second lens 806 successively from the object side to image side along optical axis；Described second fixes lens 804
Group includes the third lens 807, the 4th lens 808 and the 5th lens 809 successively from the object side to image side along optical axis.
Wherein, further include aperture diaphragm 810 and IR optical filters 811；Aperture diaphragm 810 is located at the first lens along optical axis direction
805 and second between lens 806, and IR optical filters 811 are located at side of the liquid lens 802 towards image side along optical axis direction.
It is the parameters of lens system as shown in table 3A.
Table 3A
| Focal length | 12mm |
| F values | 2.6 |
| Half FOV | 12.5° |
| Total track length TTL | 11.2mm |
| Wave-length coverage | Limit of visible spectrum |
Wherein, the meaning that table 3A parameters indicate sees that details are not described herein again referring to the associated description to table 1A.
Specifically, the shape of each lens, material, refracting power and Abbe number parameter as shown in table 3B.
Table 3B
Wherein, liquid lens can be using IR optical filters as substrate, and the meaning that parameters indicate in table 3B is seen referring to right
The associated description of table 1B, details are not described herein again.
Specifically, the asphericity coefficient for five lens for including in focal length lens group is as shown in table 2C, wherein S indicates each
The label of a lens curved surface, R indicate that radius of curvature, K indicate that circular cone coefficient, A indicate that 4 rank asphericity coefficients, B indicate 6 rank aspheric
Face coefficient, C indicate that 8 rank asphericity coefficients, D indicate 10 rank asphericity coefficients.
Table 3C
As shown in figure 9, for a kind of camera lens provided by the embodiments of the present application, comprising diaphragm 901 and thoroughly in the camera lens 900
Mirror system 902, it is only symbolistic in Fig. 9 to show to include multiple lens in the lens system 902, in fact, the lens
System 902 can be the lens system mentioned by any of the above-described embodiment；The diaphragm is used to control the thang-kng amount of the camera lens,
It can be arranged according to concrete condition in the object side of the lens system, in Fig. 9, the diaphragm 901 is located at the lens system
Before 902, it can also be arranged between the lens of the lens system.
It can also include the other assemblies such as grating, optical filter in the camera lens 900, can add according to specific application scenarios
Canadian dollar part, the embodiment of the present application do not limit.
Camera lens provided by the embodiments of the present application can be applied in the equipment of various specific shootings or observing function, such as look in the distance
Mirror, camera, mobile phone, in camera, the embodiment of the present application does not limit.
As shown in Figure 10, it is a kind of camera module 1000 provided by the embodiments of the present application, the camera module 1000
Including sensitive chip 1001 and camera lens 1002, the sensitive chip 1001 is located at the image side of the camera lens 1001, realizes imaging work(
Energy；The camera lens 1001 includes diaphragm 1003 and lens system 1004.It is only symbolistic in Figure 10 that the lens system is shown
Include multiple lens in 1004, in fact, the lens system 1004 can be the lens mentioned by any of the above-described embodiment
System.
Light enters the lens system 1004 from 1004 object side of the lens system by the diaphragm 1003, described
In lens system 1004 under the action of each lens, after converging, dissipating, the sensitive chip 1001 is reached, optical signal exists
Electric signal is converted under the action of the sensitive chip 1001.
Camera module provided by the embodiments of the present application can be applied in the equipment of various specific shootings or observing function, this
Application embodiment does not limit.
The embodiment of the present application also provides a kind of electronic equipment, the electronic equipment includes processor and photographic device, institute
It includes the lens system that any of the above-described embodiment refers to state photographic device, and the processor is loaded into the lens system for controlling
The voltage on the outside of the liquid lens in system is to change the curvature of the liquid lens.
Wherein, the electronic equipment includes but not limited to personal computer, server computer, hand-held or on knee sets
Standby, mobile device (such as mobile phone, mobile phone, tablet computer, personal digital assistant, media player etc.), consumption-orientation electricity
Sub- equipment, minicomputer, mainframe computer, film camera, digital camera, video camera, monitoring device etc., it is every specifically to take the photograph
The lens system provided by the embodiments of the present application may be used in the electronic equipment of picture or camera function.
As shown in figure 11, it is a kind of electronic equipment provided by the embodiments of the present application, the electronic equipment 1100 includes processing
Device 1101 and photographic device 1102, the photographic device 1102 include the lens system 1103, the lens system 1103
Include focal length lens group 1104 and liquid lens 1105, the processor 1101 can control load in the liquid lens
The voltage in 1105 outsides is to change the curvature of the liquid lens.
Optionally, can also include the element of sensitive chip, diaphragm, grating, optical filter in the photographic device 1102, it can
According to specific application scenarios, to increase element, to realize camera function.
Specifically, the outside of the liquid lens 1105 is provided with wire coil (such as iron ring) and magnet, the processing
Device 1101 can be by voltage-drop loading on the wire coil in 1105 outside of the liquid lens so that is generated on the wire coil
Electric current, when the voltage that the processor 1101 loads changes, the electric current on the wire coil changes；The magnet
Magnetic force is generated to the wire coil to alive so that the wire coil squeezes the liquid lens 1105, and then changes liquid
The curvature of body lens 1105.
Do not applied in 1105 outside of the liquid lens with the focal length lens group 1104 in the lens system 1103 below
When voltage, focal length introduces the method that the processor 1101 controls 1105 curvature of liquid lens for infinity：
When the electronic equipment 1100 needs the object shot to move closer to the electronic equipment, the processing from infinity
Device 1101 applies voltage to the wire coil so that the wire coil squeezes the liquid under the action of magnet
Lens 1105 make the curvature of the liquid lens 1105 become larger, and the focal length of the lens system becomes smaller；Opposite, if the need
For the object to be shot far from the electronic equipment, the processor 1101 can reduce the voltage applied to the wire coil,
So that the wire coil, under the action of the magnet, the degree for squeezing the liquid lens 1105 becomes smaller, and makes the liquid
The curvature of lens 1105 becomes smaller, and the focal length of the lens system becomes larger.
It answers it is to be understood that in foregoing description, the focal length is in the object distance that infinity refers to the focal length lens group 1104
More than a certain range, object can regard a luminous point positioned at infinite point as, and the light beam that the luminous point emits can be regarded as parallel
Inject the state of the focal length lens group 1104.
It should be noted that the processor 1101 controls the curature variation of the liquid lens 1105 in on-load voltage
Mode, be with the focal length of the focal length lens group 1104 and shooting object when object distance it is related, in the example above, be with
What the focal length of the focal length lens group illustrated for infinity, if the focal length of the focal length lens group 1104 is other values,
The processor 1101 needs, according to concrete scene, to apply voltage, change the curvature of the liquid lens 1105.
The point on the basis of the focal length of the focal length lens group 1104, when object distance is moved from from the lens system 1103
When to the datum mark, the curvature of the liquid lens 1105 need to become smaller, when object distance is from datum mark movement and close to the lens
The curvature of system 1103, the liquid lens 1105 need to become larger.
Obviously, those skilled in the art can carry out the application essence of the various modification and variations without departing from the application
God and range.In this way, if these modifications and variations of the application belong to the range of the application claim and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (13)
1. a kind of lens system, which is characterized in that the lens system includes focal length lens group and liquid lens；
The focal length lens group includes the first fixed lens group and the second fixed lens group successively from the object side to image side along optical axis；
The liquid lens along optical axis direction be located at the focal length lens group arbitrary side or first fixed lens group and
Between second fixed lens group.
2. lens system as described in claim 1, which is characterized in that the lens system further includes prism group, the prism
Group is located at side of the focal length lens group towards object side along optical axis direction.
3. lens system as claimed in claim 2, which is characterized in that if the liquid lens is located at the length along optical axis direction
Focus lens group is located at the focal length lens group and the liquid lens towards the side of object side, the then prism group along optical axis direction
Between.
4. lens system as claimed in claim 1 or 2, which is characterized in that the refracting power of the liquid lens is positive number.
5. lens system as claimed in claim 4, which is characterized in that the Curvature varying of the liquid lens ranging from 0 arrives
0.1。
6. lens system as claimed in claim 1 or 2, which is characterized in that the refracting power of the liquid lens is negative.
7. lens system as claimed in claim 6, which is characterized in that the Curvature varying of the liquid lens ranging from -0.1 arrives
0。
8. lens system as claimed in claim 1 or 2, which is characterized in that first fixed lens group is along optical axis from object
Side includes the first lens and the second lens successively to image side；
Second fixed lens group includes that the third lens, the 4th lens and the 5th are saturating successively from the object side to image side along optical axis
Mirror；
Wherein, the refracting power of first lens and the 4th lens be positive number, the second lens, the third lens and the 5th lens folding
Luminous power is negative.
9. lens system as claimed in claim 8, which is characterized in that the surface of first lens towards object side is convex surface,
The surface of the third lens, the 4th lens and the 5th lens towards object side is concave surface, table of second lens towards image side
Face is concave surface.
10. lens system as claimed in claim 8, which is characterized in that the focal length lens group meets the portion in following condition
Divide or whole：
30<V1-V2<35；30<V1-V4<35；30<V1-V5<35；30<V3-V4<35；30<V3-V5<35；30<V3-V2<35；
Wherein, V1 is the Abbe number of first lens, and V2 is the Abbe number of second lens, and V3 is the third lens
Abbe number, V4 are the Abbe number of the 4th lens, and V5 is the Abbe number of the 5th lens.
11. a kind of camera lens, which is characterized in that the camera lens includes that diaphragm and such as claim 1~10 any one of them are saturating
Mirror system.
12. a kind of camera module, which is characterized in that the camera module includes sensitive chip and such as claim 11 institute
The camera lens stated.
13. a kind of electronic equipment, which is characterized in that including processor and photographic device, the photographic device includes that right such as is wanted
Seek 1~10 any one of them lens system；Wherein, the processor for control be loaded into it is described in the lens system
Voltage on the outside of liquid lens is to change the curvature of the liquid lens.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810368607.3A CN108732728A (en) | 2018-04-23 | 2018-04-23 | A kind of lens system and camera lens |
| PCT/CN2019/075756 WO2019205789A1 (en) | 2018-04-23 | 2019-02-21 | Lens system, lens, camera module and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810368607.3A CN108732728A (en) | 2018-04-23 | 2018-04-23 | A kind of lens system and camera lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108732728A true CN108732728A (en) | 2018-11-02 |
Family
ID=63939758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810368607.3A Pending CN108732728A (en) | 2018-04-23 | 2018-04-23 | A kind of lens system and camera lens |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108732728A (en) |
| WO (1) | WO2019205789A1 (en) |
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| WO2019205789A1 (en) * | 2018-04-23 | 2019-10-31 | 华为技术有限公司 | Lens system, lens, camera module and electronic device |
| CN110661955A (en) * | 2019-10-14 | 2020-01-07 | Oppo广东移动通信有限公司 | Control method of camera module |
| CN110661953A (en) * | 2019-10-14 | 2020-01-07 | Oppo广东移动通信有限公司 | Camera module and terminal equipment |
| CN110708447A (en) * | 2019-10-14 | 2020-01-17 | Oppo广东移动通信有限公司 | Camera module and terminal equipment |
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| WO2019205789A1 (en) * | 2018-04-23 | 2019-10-31 | 华为技术有限公司 | Lens system, lens, camera module and electronic device |
| CN111552066B (en) * | 2019-02-11 | 2021-08-13 | 华为技术有限公司 | Zoom assembly, lens module and electronic equipment |
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| CN112584001A (en) * | 2019-09-27 | 2021-03-30 | 华为技术有限公司 | Camera module and terminal equipment |
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| CN113225471A (en) * | 2019-10-14 | 2021-08-06 | Oppo广东移动通信有限公司 | Camera module and terminal equipment |
| CN110708447A (en) * | 2019-10-14 | 2020-01-17 | Oppo广东移动通信有限公司 | Camera module and terminal equipment |
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| CN110661955A (en) * | 2019-10-14 | 2020-01-07 | Oppo广东移动通信有限公司 | Control method of camera module |
| CN111638039A (en) * | 2020-04-20 | 2020-09-08 | 中国科学技术大学智慧城市研究院(芜湖) | Laser speckle measurement system based on human visual characteristics |
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