CN206930822U - Imaging lens group - Google Patents
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- CN206930822U CN206930822U CN201720605343.XU CN201720605343U CN206930822U CN 206930822 U CN206930822 U CN 206930822U CN 201720605343 U CN201720605343 U CN 201720605343U CN 206930822 U CN206930822 U CN 206930822U
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Abstract
The utility model provides a kind of imaging lens group, sequentially includes the first lens group and the second lens group from thing side into image side along optical axis, wherein, the first lens group has positive light coke；Second lens group has negative power.First lens group sequentially includes the first lens, the second lens and the 3rd lens along optical axis from thing side into image side, wherein, the first lens have positive light coke, and its thing side is convex surface；Second lens have negative power；And the 3rd lens there is positive light coke or negative power.Second lens group sequentially includes the 4th lens and the 5th lens along optical axis from thing side into image side, wherein, the 4th lens have negative power；And the 5th lens there is positive light coke or negative power, its thing side is convex surface at paraxial place.Meet between the effective focal length f and the 4th lens and the combined focal length f45 of the 5th lens of imaging lens group：‑1.0≤f/f45≤‑0.5.
Description
Technical field
The application is related to a kind of imaging lens group, more particularly, to a kind of small-sized imaging being made up of five eyeglasses
Lens set.
Background technology
Regenerate with the continuous renewal of consumption electronic product, pay attention to all the more for imaging lens quality therein.To ensure
Electronic product frivolous is, it is necessary to which camera lens is increasingly miniaturized, while needs the conditions such as high pixel, high magnification.Taken the photograph generally with double
The it is proposed of thought, focal length cooperate with wide-angle lens, in the state of auto-focusing, all can obtain clearly in close shot and distant view
High quality image.
Be applicable to portable type electronic product the utility model proposes one kind, miniaturization, there is good image quality
Imaging lens group.
Utility model content
The technical scheme that the application provides solves the problems, such as techniques discussed above at least in part.
According to the one side of the application, there is provided a kind of imaging lens group.The imaging lens group is along optical axis from thing side
Extremely it sequentially may include the first lens group and the second lens group into image side, wherein, the first lens group can have positive light coke；Second is saturating
Microscope group can have negative power.First lens group is along optical axis from thing side to sequentially may include the first lens, second saturating into image side
Mirror and the 3rd lens, wherein, the first lens can have positive light coke, and its thing side is convex surface；Second lens can have negative light focus
Degree；And the 3rd lens can have positive light coke or negative power.Second lens group along optical axis from thing side into image side sequentially
It may include the 4th lens and the 5th lens, wherein, the 4th lens can have negative power；And the 5th lens can have positive light focus
Degree or negative power, its thing side are convex surface at paraxial place.The effective focal length f and the 4th lens and the 5th lens of imaging lens group
Combined focal length f45 between can meet：- 1.0≤f/f45≤- 0.5, for example, -0.78≤f/f45≤- 0.58.
According to the another aspect of the application, there is provided a kind of imaging lens group.The imaging lens group is along optical axis from thing side
Extremely it sequentially may include the first lens group and the second lens group into image side, wherein, the first lens group can have positive light coke；Second is saturating
Microscope group can have negative power.First lens group is along optical axis from thing side to sequentially may include the first lens, second saturating into image side
Mirror and the 3rd lens, wherein, the first lens can have positive light coke, and its thing side is convex surface；Second lens can have negative light focus
Degree；And the 3rd lens can have positive light coke or negative power.Second lens group along optical axis from thing side into image side sequentially
It may include the 4th lens and the 5th lens, wherein, the 4th lens can have negative power；And the 5th lens can have positive light focus
Degree or negative power, its thing side are convex surface at paraxial place.Distance BFL of the 5th lens image side surface to imaging surface on optical axis
It can meet between distance TTL of the first lens thing side to imaging surface on optical axis： 0.15<BFL/TTL<0.3, for example,
0.19≤BFL/TTL≤0.25。
According to the another aspect of the application, there is provided a kind of imaging lens group.The imaging lens group is along optical axis from thing side
Extremely it sequentially may include the first lens group and the second lens group into image side, wherein, the first lens group can have positive light coke；Second is saturating
Microscope group can have negative power.First lens group is along optical axis from thing side to sequentially may include the first lens, second saturating into image side
Mirror and the 3rd lens, wherein, the first lens can have positive light coke, and its thing side is convex surface；Second lens can have negative light focus
Degree；And the 3rd lens can have positive light coke or negative power.Second lens group along optical axis from thing side into image side sequentially
It may include the 4th lens and the 5th lens, wherein, the 4th lens can have negative power；And the 5th lens can have positive light focus
Degree or negative power, its thing side are convex surface at paraxial place.The effective focal length f of imaging lens group and the first lens thing side into
Image planes can meet between the distance TTL on optical axis：TTL/f<1.0, for example, TTL/f≤0.97.
, can between the effective focal length f2 of the second lens and the effective focal length f4 of the 4th lens according to presently filed embodiment
Meet：0.3<f2/f4<1.0, for example, 0.36≤f2/f4≤0.62.
According to presently filed embodiment, the curvature of the lens image side surface of radius of curvature R 3 and second of the second lens thing side
It can meet between radius R4：-1.5<R3/R4<- 0.5, for example, -1.06≤R3/R4≤- 0.62.
According to presently filed embodiment, between the effective focal length f of imaging lens group and the effective focal length f3 of the 3rd lens
It can meet：|f/f3|<0.5, for example, | f/f3 |≤0.33.
According to presently filed embodiment, between the effective focal length f of imaging lens group and the effective focal length f5 of the 5th lens
It can meet：|f/f5|<0.5, for example, | f/f5≤0.28.
According to presently filed embodiment, the radius of curvature of the effective focal length f of imaging lens group and the 5th lens thing side
It can meet between R9：f/R9<1.0, for example, f/R9≤0.81.
According to presently filed embodiment, the airspace T23 and the 3rd of the second lens and the 3rd lens on optical axis is saturating
Mirror and the 4th lens can meet between the airspace T34 on optical axis：T23/T34≤0.5, for example, T23/T34≤0.45.
The application employs multi-disc (for example, five) lens, by each power of lens of reasonable distribution, face type, each
Spacing etc. on axle between mirror, it can make imaging lens group that there is miniaturization, small field of view, high magnification, good image quality, low
At least one beneficial effect in sensitivity sense, balance aberration.
Brief description of the drawings
By referring to the detailed description of the following drawings progress, more than presently filed embodiment and further advantage will become
It is clear that accompanying drawing is intended to show that the illustrative embodiments of the application rather than is limited.In the accompanying drawings：
Fig. 1 shows the schematic diagram of the imaging lens group of embodiments herein 1；
Fig. 2A shows chromatic curve on the axle of the imaging lens group of embodiment 1；
Fig. 2 B show the astigmatism curve of the imaging lens group of embodiment 1；
Fig. 2 C show the distortion curve of the imaging lens group of embodiment 1；
Fig. 2 D show the ratio chromatism, curve of the imaging lens group of embodiment 1；
Fig. 3 shows the schematic diagram of the imaging lens group of embodiments herein 2；
Fig. 4 A show chromatic curve on the axle of the imaging lens group of embodiment 2；
Fig. 4 B show the astigmatism curve of the imaging lens group of embodiment 2；
Fig. 4 C show the distortion curve of the imaging lens group of embodiment 2；
Fig. 4 D show the ratio chromatism, curve of the imaging lens group of embodiment 2；
Fig. 5 shows the schematic diagram of the imaging lens group of embodiments herein 3；
Fig. 6 A show chromatic curve on the axle of the imaging lens group of embodiment 3；
Fig. 6 B show the astigmatism curve of the imaging lens group of embodiment 3；
Fig. 6 C show the distortion curve of the imaging lens group of embodiment 3；
Fig. 6 D show the ratio chromatism, curve of the imaging lens group of embodiment 3；
Fig. 7 shows the schematic diagram of the imaging lens group of embodiments herein 4；
Fig. 8 A show chromatic curve on the axle of the imaging lens group of embodiment 4；
Fig. 8 B show the astigmatism curve of the imaging lens group of embodiment 4；
Fig. 8 C show the distortion curve of the imaging lens group of embodiment 4；
Fig. 8 D show the ratio chromatism, curve of the imaging lens group of embodiment 4；
Fig. 9 shows the schematic diagram of the imaging lens group of embodiments herein 5；
Figure 10 A show chromatic curve on the axle of the imaging lens group of embodiment 5；
Figure 10 B show the astigmatism curve of the imaging lens group of embodiment 5；
Figure 10 C show the distortion curve of the imaging lens group of embodiment 5；
Figure 10 D show the ratio chromatism, curve of the imaging lens group of embodiment 5.
Figure 11 shows the schematic diagram of the imaging lens group of embodiments herein 6；
Figure 12 A show chromatic curve on the axle of the imaging lens group of embodiment 6；
Figure 12 B show the astigmatism curve of the imaging lens group of embodiment 6；
Figure 12 C show the distortion curve of the imaging lens group of embodiment 6；
Figure 12 D show the ratio chromatism, curve of the imaging lens group of embodiment 6.
Embodiment
In order to more fully understand the application, refer to the attached drawing is made into more detailed description to the various aspects of the application.Should
Understand, these describe the description of the simply illustrative embodiments to the application in detail, rather than limit the application in any way
Scope.In the specification, identical reference numbers identical element.Stating "and/or" includes associated institute
Any and all combinations of one or more of list of items.
It should be noted that in this manual, the statement of first, second, third, etc. is only used for a feature and another spy
Sign makes a distinction, and does not indicate that any restrictions to feature.Therefore, in the case of without departing substantially from teachings of the present application, hereinafter
The first lens discussed are also known as the second lens or the 3rd lens.
In the accompanying drawings, for convenience of description, thickness, the size and dimension of lens are somewhat exaggerated, it should be understood that each portion
The size of part is not limited by accompanying drawing, but can suitably be adjusted in certain scope.Specifically, the sphere shown in accompanying drawing or
Aspherical shape is illustrated by way of example.That is, sphere or aspherical shape be not limited to the sphere shown in accompanying drawing or
Aspherical shape.Accompanying drawing is merely illustrative and and non-critical drawn to scale.
In addition, near axis area refers to the region near optical axis.First lens are the lens near object and the 5th lens
It is the lens near photo-sensitive cell.Herein, it is referred to as thing side, each lens near the surface of object in each lens
In near the surface of imaging surface be referred to as image side surface.
It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory
Represent stated feature, entirety, step, operation, element and/or part be present when being used in bright book, but do not exclude the presence of or
Add one or more of the other feature, entirety, step, operation, element, part and/or combinations thereof.In addition, ought be such as
When the statement of " ... at least one " is appeared in after the list of listed feature, whole listed feature, rather than modification are modified
Individual component in list.In addition, when describing presently filed embodiment, " can with/can " be used to represent " one of the application
Or multiple embodiments ".Also, term " exemplary " is intended to refer to example or illustration.
Unless otherwise defined, otherwise all terms (including technical terms and scientific words) used herein be respectively provided with
The utility model one skilled in the art's is generally understood that identical implication.It will also be appreciated that term (such as normal
With the term defined in dictionary) implication consistent with their implications in the context of correlation technique should be interpreted as having,
And it will not be explained with idealization or excessively formal sense, unless clearly so limiting herein.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The feature of the application, principle and other aspects are described in detail below.
This application provides a kind of imaging lens group.According to the illustrative embodiments of the application, the imaging lens group edge
The first lens group and the second lens group can be disposed with from thing side into image side by optical axis.In the exemplary embodiment,
One lens group can have positive light coke, and the second lens group can have negative power.
In the exemplary embodiment, the first lens group is saturating from thing side to that can be disposed with first into image side along optical axis
Mirror, the second lens and the 3rd lens.Second lens group along optical axis from thing side into image side can be disposed with the 4th lens and
5th lens.
In the exemplary embodiment, the first lens can have positive light coke, and its thing side is convex surface；Second lens can have
There is negative power；3rd lens can alternatively have positive light coke or negative power；4th lens can have negative power；And
5th lens can alternatively have positive light coke or negative power, and its thing side is convex surface at paraxial place.By reasonably controlling
The positive and negative distribution of each power of lens in system, can effectively balance control system low order aberration so that system obtains
Preferably image quality.By above-mentioned configuration, the first lens group forms one group of telephoto lens with the second lens group, can obtain small scape
Depth and high magnification, imaging lens group is set to possess focal length characteristic.
In the exemplary embodiment, the combination of the effective focal length f of imaging lens group and the 4th lens and the 5th lens is burnt
Away from can meet between f45：- 1.0≤f/f45≤- 0.5, more specifically, -0.78≤f/f45≤- 0.58 can be met.By reasonable
Effective focal length f and f45 combined focal length is configured, the focal power of the first lens group can be effectively reduced, reduces high-order spherical aberration, while can put down
Weigh higher order astigmatism.
In the exemplary embodiment, can expire between the effective focal length f2 of the second lens and the effective focal length f4 of the 4th lens
Foot：0.3<f2/f4<1.0, more specifically, 0.36≤f2/f4≤0.62 can be met.Pass through the lens of reasonable disposition second and the 4th
Power of lens, advanced coma and higher order astigmatism can be balanced.
In the exemplary embodiment, the curvature of the lens image side surface of radius of curvature R 3 and second of the second lens thing side half
It can meet between the R4 of footpath：-1.5<R3/R4<- 0.5, more specifically, -1.06≤R3/R4≤- 0.62 can be met.By such
Configuration, can be balanced to spherical aberration, reduce coma, avoid periphery slope variation larger, and then reduce the generation of veiling glare.
In the exemplary embodiment, can between the effective focal length f of imaging lens group and the effective focal length f3 of the 3rd lens
Meet：|f/f3|<0.5, more specifically, can meet | f/f3 |≤0.33.By such configuration, deflection of light can be reduced
Degree, correction mirror head portrait is poor, reduces tolerance sensitivity, evades veiling glare.
In the exemplary embodiment, can between the effective focal length f of imaging lens group and the effective focal length f5 of the 5th lens
Meet：|f/f5|<0.5, more specifically, can meet | f/f5≤0.28.By such configuration, astigmatism, lifting imaging can be balanced
Quality, improve CRA matchings.
In the exemplary embodiment, the radius of curvature R 9 of the effective focal length f of imaging lens group and the 5th lens thing side
Between can meet：f/R9<1.0, more specifically, f/R9≤0.81 can be met.：By such configuration, advanced coma can be improved
And higher order astigmatism, lift image quality.
In the exemplary embodiment, the airspace T23 and the 3rd lens of the second lens and the 3rd lens on optical axis
And the 4th can meet between airspace T34 of the lens on optical axis：T23/T34≤0.5, more specifically, T23/ can be met
T34≤0.45.By such configuration, deflection of light can be reduced, reduce senior aberration, as matter in lift shaft, reduced sensitive
Degree.
In the exemplary embodiment, distance BFL and first lens of the 5th lens image side surface to imaging surface on optical axis
Thing side can meet between distance TTL of the imaging surface on optical axis： 0.15<BFL/TTL<0.3, more specifically, can meet
0.19≤BFL/TTL≤0.25.By such configuration, camera lens can be kept to minimize, while reduce camera lens and motor and core
Piece influences each other, and keeps camera lens clean appearance, reduces optics significant surface.
In the exemplary embodiment, the effective focal length f of imaging lens group and the first lens thing side to imaging surface in light
It can meet between distance TTL on axle：TTL/f<1.0, more specifically, TTL/f≤0.97 can be met.By such configuration,
Telephoto lens can be maintained to minimize, realize small field of view, high magnification.
In the exemplary embodiment, imaging lens system system is also provided with the aperture STO for confine optical beam, to adjust
Save light-inletting quantity.It will be apparent to a skilled person that aperture STO can be arranged as required at any lens position,
That is, the setting of aperture STO should not be limited to the position shown in accompanying drawing.
Multi-disc eyeglass can be used according to the optical imagery eyeglass group of the above-mentioned embodiment of the application, for example, it is described above
Five.Pass through spacing on the axle between each power of lens of reasonable distribution, face type, the center thickness of each lens and each lens
Deng, can effectively expand optical imagery eyeglass system system aperture, reduce system sensitivity, ensure camera lens ultra-thin property and miniaturization
And image quality is improved, so that optical imagery eyeglass system system is more beneficial for producing and processing and being applicable to portable electric
Sub- product.In presently filed embodiment, at least one in the minute surface of each lens is aspherical mirror.Non-spherical lens
Feature is：Curvature is consecutive variations from lens centre to periphery.With there is the sphere of constant curvature saturating from lens centre to periphery
Mirror is different, and non-spherical lens has more preferably radius of curvature characteristic, and having improves the advantages of distorting aberration and improving astigmatic image error,
The visual field is enabled to become much larger and true.After non-spherical lens, it can as much as possible eliminate and occur when imaging
Aberration, so as to improve image quality.In addition, the use of non-spherical lens can also efficiently reduce the lens in optical system
Number.
However, it will be understood by those of skill in the art that without departing substantially from this application claims technical scheme situation
Under, the composition quantity of camera lens can be changed, to obtain various results and advantage described below.Although for example, in the first embodiment party
Used in description in formula by being described exemplified by five lens, but the imaging lens group is not limited to include five lens.
If desired, the imaging lens group may also include the lens of other quantity.
The specific embodiment for the imaging lens group for being applicable to above-mentioned embodiment is further described with reference to the accompanying drawings.
Embodiment 1
The embodiment 1 of the imaging lens group of the above-mentioned embodiment of the application is described referring to Fig. 1 to Fig. 2 D.Fig. 1 is shown
According to the structural representation of the imaging lens group of the embodiment of the present application 1.
As shown in figure 1, the embodiment 1 of imaging lens group sequentially includes two imaging lens along optical axis from thing side into image side
Piece group, wherein, the first lens set is included along optical axis from thing side to the first lens E1 into image side sequential, the second lens E2
With the 3rd lens E3；Second lens set is included along optical axis from thing side to saturating into the 4th lens E4 of image side sequential and the 5th
Mirror E5.First lens group can have positive light coke, and the second lens group can have negative power.
First lens E1 has thing side S1 and image side surface S2；Second lens E2 has thing side S3 and image side surface S4；The
Three lens E3 have thing side S5 and image side surface S6；4th lens E4 has thing side S7 and image side surface S8；And the 5th lens
E5 has thing side S9 and image side surface S10.In this embodiment, the first lens can have positive light coke, and its thing side is convex
Face；Second lens can have negative power；3rd lens can alternatively have positive light coke or negative power；4th lens can have
There is negative power；And the 5th lens can alternatively have positive light coke or negative power, its thing side is convex surface at paraxial place.
The imaging lens group also can be set for filter out infrared light, have thing side S11 and image side surface S12 optical filter E6.At this
In the imaging lens group of embodiment, aperture STO is additionally provided with to adjust light-inletting quantity, improves the image quality of system.From object
Light sequentially through each surface S1 to S12 and being ultimately imaged on imaging surface S13.
Table 1 shows surface type, radius of curvature, thickness, material and the circular cone coefficient of each lens in the embodiment 1.
Table 1
With reference to table 1, the second lens E2 things side S3 lens E2 image side surfaces S4 of radius of curvature R 3 and second radius of curvature
Meet R3/R4=-0.88 between R4；And second airspace T23s and threeth of the lens E2 and the 3rd lens E3 on optical axis
Lens E3 and the 4th lens E4 meet T23/T34=0.45 between the airspace T34 on optical axis.
The present embodiment employs 5 lens as an example, by the focal lengths of 5 eyeglasses of reasonable distribution and face type, effectively expands
The aperture of macro lens, shorten camera lens total length, ensure large aperture and the miniaturization of camera lens；All kinds of aberrations are corrected simultaneously, are improved
The resolution and image quality of camera lens.Each aspherical face type x is limited by below equation：
Wherein, x be it is aspherical along optical axis direction when being highly h position, away from aspheric vertex of surface apart from rise；C is
Aspherical paraxial curvature, c=1/R (that is, paraxial curvature c is the mean curvature radius R of upper table 2 inverse)；K be circular cone coefficient (
Provided in upper table 1)；Ai is the correction factor of aspherical i-th-th ranks.Table 2 below is shown available for each in the embodiment 1
Each sphere of lens or aspherical S1-S10 high order term coefficient A4, A6, A8, A10, A12, A14 and A16.
Table 2
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 4.1590E-01 | -6.1728E-01 | 9.6355E-01 | -9.8614E-01 | 5.8615E-01 | -0.145221433 | 0 |
| S2 | -1.2034E-02 | 2.7259E-02 | 2.8481E-02 | -1.0015E-01 | 1.2624E-01 | -0.068926453 | 0 |
| S3 | 8.4089E-03 | 1.8618E-01 | -1.8103E-01 | -3.0275E-02 | 1.4363E-01 | -0.094734793 | 0 |
| S4 | 2.8567E-02 | 3.7633E-01 | -7.5548E-01 | 1.5246E+00 | -1.7883E+00 | 0.884106151 | 0 |
| S5 | -1.7781E-01 | 1.9272E-01 | -9.8119E-02 | 2.3987E-01 | -2.8074E-01 | 0.097636216 | 0 |
| S6 | -1.5903E-01 | 2.2526E-01 | -2.5529E-01 | 4.1229E-01 | -3.1672E-01 | 0.083066222 | 0 |
| S7 | -2.0534E-01 | 2.9911E-02 | 5.4869E-04 | 8.6485E-03 | -4.1934E-03 | 0.00056183 | 0 |
| S8 | -1.2732E-01 | 3.4079E-02 | -5.8550E-03 | -2.9483E-04 | 4.6048E-04 | -0.000113079 | 9.1232E-06 |
| S9 | -6.5236E-02 | 4.0104E-02 | -1.7119E-02 | 4.0871E-03 | -5.3463E-04 | 3.65912E-05 | -1.0572E-06 |
| S10 | -6.4868E-02 | 1.6621E-02 | 2.4095E-03 | -2.8267E-03 | 7.2712E-04 | -8.17E-05 | 3.5100E-06 |
Shown in table 3 below the effective focal length f1 to f5 of each lens in embodiment 1, imaging lens group effective focal length f,
First lens E1 thing side S1 to imaging lens group distance TTLs and imaging lens group of the imaging surface S13 on optical axis
The half HFOV at maximum field of view angle.
Table 3
| f1(mm) | 2.88 | f(mm) | 5.49 |
| f2(mm) | -4.40 | TTL(mm) | 5.31 |
| f3(mm) | 23.87 | HFOV(°) | 30.5 |
| f4(mm) | -7.69 | ||
| f5(mm) | 38.55 |
It can be seen from table 1 and table 3, the effective focal length f and the 4th lens E4 and the 5th lens E5 of imaging lens group combination
Meet f/f45=-0.58 between focal length f45；Second lens E2 effective focal length f2 and the 4th lens E4 effective focal length f4 it
Between meet f2/f4=0.57；It is full between the effective focal length f of imaging lens group and the 5th lens E5 things side S9 radius of curvature R 9
Sufficient f/R9=0.65；Meet between the effective focal length f and the 3rd lens E3 of imaging lens group effective focal length f3 | f/f3 |=
0.23；Meet between the effective focal length f and the 5th lens E5 of imaging lens group effective focal length f5 | f/f5 |=0.14；5th is saturating
Distance BFLs and first lens E1 thing side S1 to imaging surface S13 of the mirror E5 image side surfaces S10 to imaging surface S13 on optical axis are in light
Meet BFL/TTL=0.25 between distance TTL on axle；And effective focal length f and the first lens E1 things side of imaging lens group
Face S1 to imaging surface S13 meets TTL/f=0.97 between the distance TTL on optical axis.
Fig. 2A shows chromatic curve on the axle of the imaging lens group of embodiment 1, its represent different wave length light via
Converging focal point after optical system deviates.Fig. 2 B show the astigmatism curve of the imaging lens group of embodiment 1, and it represents meridian
Curvature of the image and sagittal image surface bending.Fig. 2 C show the distortion curve of the imaging lens group of embodiment 1, and it represents that difference regards
Distortion sizes values in the case of angle.Fig. 2 D show the ratio chromatism, curve of the imaging lens group of embodiment 1, and it represents light warp
By the deviation of the different image heights after imaging lens group on imaging surface.In summary and reference picture 2A to Fig. 2 D can be seen that
The feature of miniaturization, good image quality and hyposensitivity can be achieved according to the imaging lens group of embodiment 1.
Embodiment 2
The embodiment 2 of the above-mentioned imaging lens group of the application is described referring to Fig. 3 to Fig. 4 D.Except imaging lens group
Outside the parameter of each eyeglass, for example, it is spacing on the radius of curvature except each eyeglass, thickness, circular cone coefficient, effective focal length, axle, each
Outside high order term coefficient of minute surface etc., in the imaging lens group and embodiment 1 described in the present embodiment 2 and following embodiment
The arrangement of the imaging lens group of description is identical.For simplicity, by clipped description similar to Example 1.
Fig. 3 shows the structural representation of the imaging lens group according to the embodiment of the present application 2.As shown in figure 3, according to implementation
The imaging lens group of example 2 sequentially includes two imaging lens groups along optical axis from thing side into image side, wherein, the first lens set bag
Include along optical axis from thing side to the first lens E1, the second lens E2 and the 3rd lens E3 into image side sequential, the second eyeglass
Group is included along optical axis from thing side into the 4th lens E4 of image side sequential and the 5th lens E5.Table 4 below shows the reality
Apply surface type, radius of curvature, thickness, material and the circular cone coefficient of each lens in example 2.Table 5 is shown available for the implementation
Each sphere of each lens in example 2 or aspherical S1-S10 high order term coefficient A4, A6, A8, A10, A12, A14, A16, A18
And A20.Wherein, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.Embodiment 2 is shown in table 6
In the effective focal length f1 to f5 of each lens, the effective focal length f of imaging lens group, the first lens E1 thing side S1 is to imaging lens
The half HFOV at distance TTLs and imaging lens group of the imaging surface S13 of piece group on optical axis maximum field of view angle.
Table 4
Table 5
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 4.2050E-01 | -7.3219E-01 | 1.6805E+00 | -3.2484E+00 | 4.7493E+00 | -4.7776E+00 | 3.0649E+00 | -1.1108E+00 | 1.7075E-01 |
| S2 | -1.6798E-02 | 1.0165E-01 | -5.5495E-01 | 2.2228E+00 | -5.5595E+00 | 8.7348E+00 | -8.4115E+00 | 4.5437E+00 | -1.0592E+00 |
| S3 | 1.6283E-02 | 5.3669E-02 | 4.7048E-01 | -2.4870E+00 | 6.4952E+00 | -1.0364E+01 | 1.0001E+01 | -5.3293E+00 | 1.1883E+00 |
| S4 | 4.7864E-02 | 2.4123E-01 | -4.1962E-01 | 8.7440E-01 | -2.8650E-01 | -3.4161E+00 | 8.6059E+00 | -8.6053E+00 | 3.3036E+00 |
| S5 | -1.5759E-01 | 1.1379E-01 | -6.3794E-02 | 7.0193E-01 | -2.4291E+00 | 4.6734E+00 | -5.2284E+00 | 3.1336E+00 | -7.7553E-01 |
| S6 | -1.4668E-01 | 3.0739E-01 | -9.7818E-01 | 3.0271E+00 | -5.8956E+00 | 7.3616E+00 | -5.7081E+00 | 2.4895E+00 | -4.6630E-01 |
| S7 | -1.4538E-01 | 1.0646E-04 | 3.2207E-02 | -3.9778E-02 | 3.7602E-02 | -2.0688E-02 | 6.2202E-03 | -9.4020E-04 | 5.42048E-05 |
| S8 | -9.3019E-02 | 1.6767E-02 | 2.0125E-03 | -9.2111E-04 | -1.9679E-03 | 1.6298E-03 | -5.3021E-04 | 8.1029E-05 | -4.8272E-06 |
| S9 | -6.1503E-02 | 3.1835E-02 | -7.2630E-03 | -2.2901E-03 | 1.8182E-03 | -4.5900E-04 | 5.4936E-05 | -2.7631E-06 | 1.9396E-08 |
| S10 | -6.8956E-02 | 2.6831E-02 | -9.8077E-03 | 4.9309E-03 | -2.1351E-03 | 5.6256E-04 | -8.4676E-05 | 6.8050E-06 | -2.2856E-07 |
Table 6
| f1(mm) | 2.89 | f(mm) | 5.48 |
| f2(mm) | -4.99 | TTL(mm) | 5.31 |
| f3(mm) | 62.25 | HFOV(°) | 30.7 |
| f4(mm) | -8.06 | ||
| f5(mm) | 51.29 |
Fig. 4 A show chromatic curve on the axle of the imaging lens group of embodiment 2, its represent different wave length light via
Converging focal point after optical system deviates.Fig. 4 B show the astigmatism curve of the imaging lens group of embodiment 2, and it represents meridian
Curvature of the image and sagittal image surface bending.Fig. 4 C show the distortion curve of the imaging lens group of embodiment 2, and it represents that difference regards
Distortion sizes values in the case of angle.Fig. 4 D show the ratio chromatism, curve of the imaging lens group of embodiment 2, and it represents light warp
By the deviation of the different image heights after imaging lens group on imaging surface.In summary and reference picture 4A to Fig. 4 D can be seen that
The feature of miniaturization, good image quality and hyposensitivity can be achieved according to the imaging lens group of embodiment 2.
Embodiment 3
The embodiment 3 of the above-mentioned imaging lens group of the application is described referring to Fig. 5 to Fig. 6 D.Fig. 5 is shown according to this
Apply for the structural representation of the imaging lens group of embodiment 3.As shown in Fig. 5, according to the imaging lens group of embodiment 3 along light
Axle sequentially includes two imaging lens groups from thing side into image side, wherein, the first lens set include along optical axis from thing side into
The first lens E1, the second lens E2 and the 3rd lens E3 of image side sequential, the second lens set are included along optical axis from thing side
Extremely into the 4th lens E4 of image side sequential and the 5th lens E5.
Table 7 below shows surface type, radius of curvature, thickness, material and the circular cone system of each lens in the embodiment 3
Number.Table 8 show available for each lens in the embodiment 3 each sphere or aspherical S1-S10 high order term coefficient A4, A6,
A8, A10, A12, A14, A16, A18 and A20.Wherein, each aspherical face type can be by the formula (1) that is provided in above-described embodiment 1
Limit.The effective focal length f1 to f5 of each lens in embodiment 3, the effective focal length f of imaging lens group, first are shown in table 9
Lens E1 thing side S1 to distance TTLs and imaging lens group of the imaging surface S13 on optical axis of imaging lens group maximum
The half HFOV of the angle of visual field.
Table 7
Table 8
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 4.1524E-01 | -7.4419E-01 | 1.7702E+00 | -3.5984E+00 | 5.5755E+00 | -6.0101E+00 | 4.1924E+00 | -1.6897E+00 | 2.9883E-01 |
| S2 | -1.2009E-02 | 7.8011E-02 | -3.7994E-01 | 1.4119E+00 | -3.3864E+00 | 5.1703E+00 | -4.8537E+00 | 2.5573E+00 | -5.7914E-01 |
| S3 | 1.1402E-02 | 8.0007E-02 | 2.3759E-01 | -1.5432E+00 | 4.0190E+00 | -6.0205E+00 | 5.2959E+00 | -2.5166E+00 | 4.8710E-01 |
| S4 | 4.2995E-02 | 2.4061E-01 | -6.5634E-01 | 2.3092E+00 | -5.6113E+00 | 8.9388E+00 | -8.4466E+00 | 4.2247E+00 | -7.8311E-01 |
| S5 | -1.5521E-01 | 1.2099E-01 | -2.4229E-01 | 1.2642E+00 | -3.4602E+00 | 6.0226E+00 | -6.3983E+00 | 3.7362E+00 | -9.2208E-01 |
| S6 | -1.1632E-01 | 1.9477E-01 | -5.6898E-01 | 1.8268E+00 | -3.5506E+00 | 4.4791E+00 | -3.5315E+00 | 1.5692E+00 | -3.0249E-01 |
| S7 | -1.4945E-01 | 3.1875E-02 | -4.9977E-02 | 6.8214E-02 | -5.2352E-02 | 2.6280E-02 | -8.3396E-03 | 1.4965E-03 | -1.1546E-04 |
| S8 | -8.3742E-02 | 1.7280E-02 | -1.4135E-02 | 1.7387E-02 | -1.2299E-02 | 4.9697E-03 | -1.1495E-03 | 1.4217E-04 | -7.3182E-06 |
| S9 | -6.0152E-02 | 3.8631E-02 | -1.7097E-02 | 4.8801E-03 | -1.0592E-03 | 1.9681E-04 | -2.7825E-05 | 2.3684E-06 | -8.6669E-08 |
| S10 | -4.3112E-02 | 7.3788E-03 | -3.2209E-04 | 5.4347E-04 | -3.6486E-04 | 9.1289E-05 | -1.1142E-05 | 6.7297E-07 | -1.6184E-08 |
Table 9
| f1(mm) | 2.83 | f(mm) | 5.48 |
| f2(mm) | -4.25 | TTL(mm) | 5.31 |
| f3(mm) | 22.62 | HFOV(゜) | 30.6 |
| f4(mm) | -8.62 | ||
| f5(mm) | -85.37 |
Fig. 6 A show chromatic curve on the axle of the imaging lens group of embodiment 3, its represent different wave length light via
Converging focal point after optical system deviates.Fig. 6 B show the astigmatism curve of the imaging lens group of embodiment 3, and it represents meridian
Curvature of the image and sagittal image surface bending.Fig. 6 C show the distortion curve of the imaging lens group of embodiment 3, and it represents that difference regards
Distortion sizes values in the case of angle.Fig. 6 D show the ratio chromatism, curve of the imaging lens group of embodiment 3, and it represents light warp
By the deviation of the different image heights after imaging lens group on imaging surface.In summary and reference picture 6A to Fig. 6 D can be seen that
The feature of miniaturization, good image quality and hyposensitivity can be achieved according to the imaging lens group of embodiment 3.
Embodiment 4
The embodiment 4 of the above-mentioned imaging lens group of the application is described referring to Fig. 7 to Fig. 8 D.Fig. 7 is shown according to this
Apply for the structural representation of the imaging lens group of embodiment 4.As shown in Fig. 7, according to the imaging lens group of embodiment 4 along light
Axle sequentially includes two imaging lens groups from thing side into image side, wherein, the first lens set include along optical axis from thing side into
The first lens E1, the second lens E2 and the 3rd lens E3 of image side sequential, the second lens set are included along optical axis from thing side
Extremely into the 4th lens E4 of image side sequential and the 5th lens E5.
Table 10 below shows surface type, radius of curvature, thickness, material and the circular cone system of each lens in the embodiment 4
Number.Table 11 show available for each lens in the embodiment 4 each sphere or aspherical S1-S10 high order term coefficient A4,
A6, A8, A10, A12, A14, A16, A18 and A20.Wherein, each aspherical face type can be by the formula that is provided in above-described embodiment 1
(1) limit.Shown in table 12 the effective focal length f1 to f5 of each lens in embodiment 4, imaging lens group effective focal length f,
First lens E1 thing side S1 to imaging lens group distance TTLs and imaging lens group of the imaging surface S13 on optical axis
The half HFOV at maximum field of view angle.
Table 10
Table 11
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 4.1168E-01 | -7.3665E-01 | 1.7487E+00 | -3.5538E+00 | 5.5163E+00 | -5.9680E+00 | 4.1859E+00 | -1.6995E+00 | 3.0346E-01 |
| S2 | -1.0317E-02 | 7.2165E-02 | -3.4916E-01 | 1.2846E+00 | -3.0510E+00 | 4.6162E+00 | -4.2951E+00 | 2.2432E+00 | -5.0330E-01 |
| S3 | 1.3172E-02 | 7.2797E-02 | 2.0940E-01 | -1.3656E+00 | 3.5371E+00 | -5.2542E+00 | 4.5733E+00 | -2.1455E+00 | 4.0801E-01 |
| S4 | 5.0700E-02 | 2.0417E-01 | -5.4719E-01 | 1.8994E+00 | -4.4621E+00 | 6.8427E+00 | -6.1422E+00 | 2.8439E+00 | -4.4810E-01 |
| S5 | -1.4561E-01 | 1.1719E-01 | -2.5713E-01 | 1.2581E+00 | -3.3013E+00 | 5.5925E+00 | -5.8305E+00 | 3.3563E+00 | -8.1976E-01 |
| S6 | -1.0628E-01 | 1.7413E-01 | -4.8834E-01 | 1.5359E+00 | -2.8920E+00 | 3.5600E+00 | -2.7560E+00 | 1.2084E+00 | -2.3179E-01 |
| S7 | -1.4188E-01 | 2.5341E-02 | -4.6865E-02 | 6.6386E-02 | -5.0989E-02 | 2.4959E-02 | -7.5636E-03 | 1.2831E-03 | -9.3491E-05 |
| S8 | -7.9348E-02 | 1.1092E-02 | -1.0635E-02 | 1.6300E-02 | -1.2087E-02 | 4.9106E-03 | -1.1299E-03 | 1.3884E-04 | -7.1158E-06 |
| S9 | -6.3294E-02 | 4.1487E-02 | -1.8660E-02 | 5.4822E-03 | -1.2260E-03 | 2.2756E-04 | -3.1242E-05 | 2.5706E-06 | -9.1493E-08 |
| S10 | -4.2359E-02 | 5.2242E-03 | 1.6123E-03 | -7.6425E-04 | 1.5964E-04 | -2.9569E-05 | 4.7795E-06 | -4.4546E-07 | 1.6349E-08 |
Table 12
| f1(mm) | 2.84 | f(mm) | 5.48 |
| f2(mm) | -4.19 | TTL(mm) | 5.31 |
| f3(mm) | 20.10 | HFOV(゜) | 30.6 |
| f4(mm) | -9.48 | ||
| f5(mm) | -39.51 |
Fig. 8 A show chromatic curve on the axle of the imaging lens group of embodiment 4, its represent different wave length light via
Converging focal point after optical system deviates.Fig. 8 B show the astigmatism curve of the imaging lens group of embodiment 4, and it represents meridian
Curvature of the image and sagittal image surface bending.Fig. 8 C show the distortion curve of the imaging lens group of embodiment 4, and it represents that difference regards
Distortion sizes values in the case of angle.Fig. 8 D show the ratio chromatism, curve of the imaging lens group of embodiment 4, and it represents light warp
By the deviation of the different image heights after imaging lens group on imaging surface.In summary and reference picture 8A to Fig. 8 D can be seen that
The feature of miniaturization, good image quality and hyposensitivity can be achieved according to the imaging lens group of embodiment 4.
Embodiment 5
The embodiment 5 of the above-mentioned imaging lens group of the application is described referring to Fig. 9 to Figure 10 D.Fig. 9 is shown according to this
Apply for the structural representation of the imaging lens group of embodiment 5.As shown in Fig. 9, according to the imaging lens group of embodiment 5 along light
Axle sequentially includes two imaging lens groups from thing side into image side, wherein, the first lens set include along optical axis from thing side into
The first lens E1, the second lens E2 and the 3rd lens E3 of image side sequential, the second lens set are included along optical axis from thing side
Extremely into the 4th lens E4 of image side sequential and the 5th lens E5.
Table 13 below shows surface type, radius of curvature, thickness, material and the circular cone system of each lens in the embodiment 5
Number.Table 14 show available for each lens in the embodiment 5 each sphere or aspherical S1-S10 high order term coefficient A4,
A6, A8, A10, A12, A14, A16, A18 and A20.Wherein, each aspherical face type can be by the formula that is provided in above-described embodiment 1
(1) limit.Shown in table 15 the effective focal length f1 to f5 of each lens in embodiment 5, imaging lens group effective focal length f,
First lens E1 thing side S1 to imaging lens group distance TTLs and imaging lens group of the imaging surface S13 on optical axis
The half HFOV at maximum field of view angle.
Table 13
Table 14
Table 15
| f1(mm) | 2.86 | f(mm) | 5.48 |
| f2(mm) | -4.13 | TTL(mm) | 5.31 |
| f3(mm) | 17.93 | HFOV(゜) | 30.6 |
| f4(mm) | -10.86 | ||
| f5(mm) | -22.87 |
Figure 10 A show chromatic curve on the axle of the imaging lens group of embodiment 5, its represent different wave length light via
Converging focal point after optical system deviates.Figure 10 B show the astigmatism curve of the imaging lens group of embodiment 5, and it represents meridian
Curvature of the image and sagittal image surface bending.Figure 10 C show the distortion curve of the imaging lens group of embodiment 5, and it represents that difference regards
Distortion sizes values in the case of angle.Figure 10 D show the ratio chromatism, curve of the imaging lens group of embodiment 5, and it represents light
Via the deviation of the different image heights after imaging lens group on imaging surface.In summary and reference picture 10A to Figure 10 D can be seen
Go out, the feature of miniaturization, good image quality and hyposensitivity can be achieved according to the imaging lens group of embodiment 5.
Embodiment 6
The embodiment 6 of the above-mentioned imaging lens group of the application is described referring to Figure 11 to Figure 12 D.Figure 11 shows root
According to the structural representation of the imaging lens group of the embodiment of the present application 6.As shown in figure 11, according to the imaging lens group edge of embodiment 6
Optical axis sequentially includes two imaging lens groups from thing side into image side, wherein, the first lens set is included along optical axis from thing side
To into image side sequential the first lens E1, the second lens E2 and the 3rd lens E3, the second lens set include along optical axis from
Thing side is extremely into the 4th lens E4 of image side sequential and the 5th lens E5.
Table 16 below shows surface type, radius of curvature, thickness, material and the circular cone system of each lens in the embodiment 6
Number.Table 17 show available for each lens in the embodiment 6 each sphere or aspherical S1-S10 high order term coefficient A4,
A6, A8, A10, A12, A14, A16, A18 and A20.Wherein, each aspherical face type can be by the formula that is provided in above-described embodiment 1
(1) limit.Shown in table 18 the effective focal length f1 to f5 of each lens in embodiment 6, imaging lens group effective focal length f,
First lens E1 thing side S1 to imaging lens group distance TTLs and imaging lens group of the imaging surface S13 on optical axis
The half HFOV at maximum field of view angle.
Table 16
Table 17
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 3.9105E-01 | -6.8508E-01 | 1.5736E+00 | -3.0977E+00 | 4.6725E+00 | -4.927431937 | 3.3763E+00 | -1.3410E+00 | 2.3444E-01 |
| S2 | -4.0284E-03 | 5.9779E-02 | -2.6972E-01 | 9.6042E-01 | -2.2396E+00 | 3.33486289 | -3.0553E+00 | 1.5723E+00 | -3.4812E-01 |
| S3 | 1.0186E-02 | 1.0152E-01 | -3.3517E-02 | -4.2581E-01 | 1.2888E+00 | -1.886534514 | 1.5203E+00 | -6.2199E-01 | 8.9603E-02 |
| S4 | 6.9879E-02 | 1.0726E-01 | -3.0311E-01 | 1.1620E+00 | -2.8741E+00 | 4.677031086 | -4.5773E+00 | 2.4657E+00 | -5.5150E-01 |
| S5 | -1.2953E-01 | 1.0669E-01 | -1.4059E-01 | 5.7399E-01 | -1.2193E+00 | 1.827854006 | -1.8044E+00 | 1.0175E+00 | -2.5035E-01 |
| S6 | -7.6873E-02 | 1.1889E-01 | -2.1690E-01 | 6.3079E-01 | -9.9941E-01 | 1.079442954 | -7.8656E-01 | 3.5570E-01 | -7.8761E-02 |
| S7 | -1.0012E-01 | -4.8010E-02 | 6.2744E-02 | -6.1166E-02 | 4.9087E-02 | -0.027798623 | 9.7394E-03 | -1.8271E-03 | 1.3894E-04 |
| S8 | -6.1333E-02 | -3.5985E-02 | 4.6006E-02 | -2.7365E-02 | 1.0159E-02 | -0.002570854 | 4.2801E-04 | -4.0305E-05 | 1.5230E-06 |
| S9 | -7.3110E-02 | 5.2005E-02 | -2.8514E-02 | 1.2435E-02 | -4.1028E-03 | 0.000912179 | -1.2445E-04 | 9.3579E-06 | -2.9779E-07 |
| S10 | -4.6777E-02 | 3.1767E-03 | 5.1824E-03 | -3.9358E-03 | 1.6109E-03 | -0.000387498 | 5.3577E-05 | -3.9188E-06 | 1.1707E-07 |
Table 18
Figure 12 A show chromatic curve on the axle of the imaging lens group of embodiment 6, its represent different wave length light via
Converging focal point after optical system deviates.Figure 12 B show the astigmatism curve of the imaging lens group of embodiment 6, and it represents meridian
Curvature of the image and sagittal image surface bending.Figure 12 C show the distortion curve of the imaging lens group of embodiment 6, and it represents that difference regards
Distortion sizes values in the case of angle.Figure 12 D show the ratio chromatism, curve of the imaging lens group of embodiment 6, and it represents light
Via the deviation of the different image heights after imaging lens group on imaging surface.In summary and reference picture 12A to Figure 12 D can be seen
Go out, the feature of miniaturization, good image quality and hyposensitivity can be achieved according to the imaging lens group of embodiment 6.
In summary, with reference to table 1 to table 18, table 19 below institute can be met respectively between each parameter of embodiment 1 to embodiment 6
The relation shown.
Table 19
| Formula embodiment | 1 | 2 | 3 | 4 | 5 | 6 |
| f/f45 | -0.58 | -0.59 | -0.73 | -0.74 | -0.77 | -0.78 |
| f2/f4 | 0.57 | 0.62 | 0.49 | 0.44 | 0.38 | 0.36 |
| R3/R4 | -0.88 | -0.62 | -0.72 | -0.78 | -0.97 | -1.06 |
| f/R9 | 0.65 | 0.70 | 0.81 | 0.73 | 0.59 | 0.53 |
| f/f3 | 0.23 | 0.09 | 0.24 | 0.27 | 0.31 | 0.33 |
| f/f5 | 0.14 | 0.11 | -0.06 | -0.14 | -0.24 | -0.28 |
| BFL/TTL | 0.25 | 0.23 | 0.20 | 0.19 | 0.19 | 0.19 |
| T23/T34 | 0.45 | 0.44 | 0.35 | 0.35 | 0.32 | 0.31 |
| TTL/f | 0.97 | 0.97 | 0.97 | 0.97 | 0.97 | 0.97 |
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that utility model scope involved in the application, however it is not limited to what the particular combination of above-mentioned technical characteristic formed
Technical scheme, while should also cover in the case where not departing from utility model design, by above-mentioned technical characteristic or its be equal
Other technical schemes that feature is combined and formed.Such as features described above has with (but not limited to) disclosed herein
The technical scheme that the technical characteristic for having similar functions is replaced mutually and formed.
Claims (27)
1. a kind of imaging lens group, sequentially include the first lens group and the second lens group from thing side into image side along optical axis,
Characterized in that,
First lens group has positive light coke；And
Second lens group has negative power,
Wherein, first lens group sequentially includes along the optical axis from thing side into image side：
First lens, there is positive light coke, its thing side is convex surface；
Second lens, there is negative power；And
3rd lens, there is positive light coke or negative power,
Wherein, second lens group sequentially includes along the optical axis from thing side into image side：
4th lens, there is negative power；And
5th lens, there is positive light coke or negative power, its thing side is convex surface at paraxial place, and
It is full between the effective focal length f of the imaging lens group and the 4th lens and the combined focal length f45 of the 5th lens
Foot：-1.0≤f/f45≤-0.5.
2. imaging lens group as claimed in claim 1, it is characterised in that the effective focal length f2 of second lens and described the
Meet between the effective focal length f4 of four lens：0.3<f2/f4<1.0.
3. imaging lens group as claimed in claim 1 or 2, it is characterised in that the radius of curvature of the second lens thing side
Meet between the radius of curvature R 4 of R3 and the second lens image side surface：-1.5<R3/R4<-0.5.
4. imaging lens group as claimed in claim 1, it is characterised in that the effective focal length f of the imaging lens group with
Meet between the effective focal length f3 of 3rd lens：|f/f3|<0.5.
5. imaging lens group as claimed in claim 1, it is characterised in that the effective focal length f of the imaging lens group with
Meet between the effective focal length f5 of 5th lens：|f/f5|<0.5.
6. imaging lens group as claimed in claim 5, it is characterised in that the effective focal length f of the imaging lens group with
Meet between the radius of curvature R 9 of the 5th lens thing side：f/R9<1.0.
7. imaging lens group as claimed in claim 1, it is characterised in that second lens and the 3rd lens are described
Between the airspace T34 of airspace T23 and the 3rd lens and the 4th lens on the optical axis on optical axis
Meet：T23/T34≤0.5.
8. imaging lens group as claimed in claim 1, it is characterised in that the 5th lens image side surface is to imaging surface described
Distance BFL and the first lens thing side on optical axis meet between distance TTL of the imaging surface on the optical axis：0.15
<BFL/TTL<0.3。
9. imaging lens group as claimed in claim 8, it is characterised in that the effective focal length f of the imaging lens group with
The first lens thing side meets between distance TTL of the imaging surface on the optical axis：TTL/f<1.0.
10. a kind of imaging lens group, sequentially include the first lens group and the second lens group from thing side into image side along optical axis,
Characterized in that,
First lens group has positive light coke；And
Second lens group has negative power,
Wherein, first lens group sequentially includes along the optical axis from thing side into image side：
First lens, there is positive light coke, its thing side is convex surface；
Second lens, there is negative power；And
3rd lens, there is positive light coke or negative power,
Wherein, second lens group sequentially includes along the optical axis from thing side into image side：
4th lens, there is negative power；And
5th lens, there is positive light coke or negative power, its thing side is convex surface at paraxial place, and
Distance BFL of the 5th lens image side surface to imaging surface on the optical axis is extremely imaged with the first lens thing side
Face meets between the distance TTL on the optical axis：0.15<BFL/TTL<0.3.
11. imaging lens group as claimed in claim 10, it is characterised in that the effective focal length f2 of second lens with it is described
Meet between the effective focal length f4 of 4th lens：0.3<f2/f4<1.0.
12. imaging lens group as claimed in claim 11, it is characterised in that the effective focal length f of the imaging lens group and institute
State and meet between the combined focal length f45 of the 4th lens and the 5th lens：-1.0≤f/f45≤-0.5.
13. the imaging lens group as described in claim 10 or 12, it is characterised in that the curvature of the second lens thing side half
Meet between the radius of curvature R 4 of footpath R3 and the second lens image side surface：-1.5<R3/R4<-0.5.
14. imaging lens group as claimed in claim 10, it is characterised in that the effective focal length f of the imaging lens group and institute
State and meet between the effective focal length f3 of the 3rd lens：|f/f3|<0.5.
15. imaging lens group as claimed in claim 10, it is characterised in that the effective focal length f of the imaging lens group and institute
State and meet between the effective focal length f5 of the 5th lens：|f/f5|<0.5.
16. imaging lens group as claimed in claim 14, it is characterised in that the effective focal length f of the imaging lens group
Meet between the radius of curvature R 9 of the 5th lens thing side：f/R9<1.0.
17. imaging lens group as claimed in claim 10, it is characterised in that second lens and the 3rd lens are in institute
State airspace T23 on the optical axis and airspace T34 of the 3rd lens and the 4th lens on the optical axis it
Between meet：T23/T34≤0.5.
18. imaging lens group as claimed in claim 17, it is characterised in that the effective focal length f of the imaging lens group and institute
The first lens thing side is stated between distance TTL of the imaging surface on the optical axis to meet：TTL/f<1.0.
19. a kind of imaging lens group, sequentially include the first lens group and the second lens group from thing side into image side along optical axis,
Characterized in that,
First lens group has positive light coke；And
Second lens group has negative power,
Wherein, first lens group sequentially includes along the optical axis from thing side into image side：
First lens, there is positive light coke, its thing side is convex surface；
Second lens, there is negative power；And
3rd lens, there is positive light coke or negative power,
Wherein, second lens group sequentially includes along the optical axis from thing side into image side：
4th lens, there is negative power；And
5th lens, there is positive light coke or negative power, its thing side is convex surface at paraxial place, and
The effective focal length f of the imaging lens group and distance of the first lens thing side to imaging surface on the optical axis
Meet between TTL：TTL/f<1.0.
20. imaging lens group as claimed in claim 19, it is characterised in that the effective focal length f of the imaging lens group
Meet between the 4th lens and the combined focal length f45 of the 5th lens：-1.0≤f/f45≤-0.5.
21. imaging lens group as claimed in claim 19, it is characterised in that the effective focal length f2 of second lens with it is described
Meet between the effective focal length f4 of 4th lens：0.3<f2/f4<1.0.
22. the imaging lens group as described in claim 19 or 21, it is characterised in that the curvature of the second lens thing side half
Meet between the radius of curvature R 4 of footpath R3 and the second lens image side surface：-1.5<R3/R4<-0.5.
23. imaging lens group as claimed in claim 19, it is characterised in that the effective focal length f of the imaging lens group
Meet between the effective focal length f3 of the 3rd lens：|f/f3|<0.5.
24. imaging lens group as claimed in claim 19, it is characterised in that the effective focal length f of the imaging lens group
Meet between the effective focal length f5 of the 5th lens：|f/f5|<0.5.
25. imaging lens group as claimed in claim 23, it is characterised in that the effective focal length f of the imaging lens group
Meet between the radius of curvature R 9 of the 5th lens thing side：f/R9<1.0.
26. imaging lens group as claimed in claim 19, it is characterised in that second lens and the 3rd lens are in institute
State airspace T23 on the optical axis and airspace T34 of the 3rd lens and the 4th lens on the optical axis it
Between meet：T23/T34≤0.5.
27. imaging lens group as claimed in claim 19, it is characterised in that the 5th lens image side surface is to imaging surface in institute
The distance BFL on optical axis and the first lens thing side is stated between distance TTL of the imaging surface on the optical axis to meet：
0.15<BFL/TTL<0.3。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720605343.XU CN206930822U (en) | 2017-05-27 | 2017-05-27 | Imaging lens group |
| PCT/CN2017/107332 WO2018218856A1 (en) | 2017-05-27 | 2017-10-23 | Imaging lens set |
| US16/074,680 US11372208B2 (en) | 2017-05-27 | 2017-10-23 | Imaging lens assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720605343.XU CN206930822U (en) | 2017-05-27 | 2017-05-27 | Imaging lens group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206930822U true CN206930822U (en) | 2018-01-26 |
Family
ID=61350981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720605343.XU Active CN206930822U (en) | 2017-05-27 | 2017-05-27 | Imaging lens group |
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| Country | Link |
|---|---|
| CN (1) | CN206930822U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113514937A (en) * | 2021-05-27 | 2021-10-19 | 江西晶超光学有限公司 | Optical system, camera module and electronic equipment |
| CN114384668A (en) * | 2020-10-22 | 2022-04-22 | 华为技术有限公司 | Optical system and terminal device |
| WO2023174212A1 (en) * | 2022-03-15 | 2023-09-21 | 华为技术有限公司 | Long-focus lens, camera module and electronic device |
-
2017
- 2017-05-27 CN CN201720605343.XU patent/CN206930822U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114384668A (en) * | 2020-10-22 | 2022-04-22 | 华为技术有限公司 | Optical system and terminal device |
| CN113514937A (en) * | 2021-05-27 | 2021-10-19 | 江西晶超光学有限公司 | Optical system, camera module and electronic equipment |
| CN113514937B (en) * | 2021-05-27 | 2023-11-07 | 江西晶超光学有限公司 | Optical system, camera module and electronic equipment |
| WO2023174212A1 (en) * | 2022-03-15 | 2023-09-21 | 华为技术有限公司 | Long-focus lens, camera module and electronic device |
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