CN107153257A - Optical imaging system - Google Patents

Optical imaging system Download PDF

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Publication number
CN107153257A
CN107153257A CN201710338407.9A CN201710338407A CN107153257A CN 107153257 A CN107153257 A CN 107153257A CN 201710338407 A CN201710338407 A CN 201710338407A CN 107153257 A CN107153257 A CN 107153257A
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China
Prior art keywords
lens
imaging system
optical imaging
optical axis
optical
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Granted
Application number
CN201710338407.9A
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Chinese (zh)
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CN107153257B (en
Inventor
戴付建
闻人建科
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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Priority to CN201710338407.9A priority Critical patent/CN107153257B/en
Publication of CN107153257A publication Critical patent/CN107153257A/en
Priority to PCT/CN2017/102633 priority patent/WO2018209855A1/en
Priority to US15/772,854 priority patent/US10996435B2/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Abstract

This application discloses a kind of optical imaging system, the optical imaging system has effective focal length f and entrance pupil diameter EPD, and sequentially includes the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens by thing side to image side along optical axis.Wherein, the 3rd lens have negative power；5th lens have positive light coke or negative power, and its image side surface is convex surface；7th lens have positive light coke or negative power, and its thing side is concave surface；First lens, the second lens, the 4th lens and the 6th lens have positive light coke or negative power respectively；And apart from the half ImgH of the imaging surface of TTL and the optical imaging system on effective pixel area diagonal line length between satisfaction of the first lens thing side to imaging surface on the optical axis：TTL/ImgH<1.6.

Description

Optical imaging system
Technical field
The application is related to a kind of optical imaging system, more specifically, the application is related to a kind of light being made up of seven eyeglasses Learn imaging system.
Background technology
With the development of science and technology, mobile phone market increases high-pixel mobile phone lens demand, because mobile phone thickness is thinned, Camera lens overall length is limited, so as to increase the difficulty of mobile lens design.The conventional photo-sensitive cell of current optical system is electrically coupled Device (charge-coupled device, CCD) and CMOS (complementary metal- Oxide semiconductor, CMOS) performance of imaging sensor improves and size reduces, and corresponding pick-up lens also needs full The high image quality of foot and the requirement of miniaturization.
In order to meet the requirement of miniaturization, the F numbers that existing camera lens is generally configured are 2.0 or more than 2.0, but with intelligence Imaging lens are proposed higher requirement, by continuing to develop for the portable type electronic products such as energy mobile phone especially for light not Situations such as foot (such as overcast and rainy, dusk), hand shaking, so 2.0 or more than 2.0 F numbers can not meet the imaging of higher order It is required that.
Therefore the present invention proposes a kind of miniaturization, large aperture, the optical imaging system of high image quality.
The content of the invention
The technical scheme that the application is provided solves the problems, such as techniques discussed above at least in part.
According to the one side of the application there is provided such a optical imaging system, the optical imaging system has Imitate focal length f and entrance pupil diameter EPD, and sequentially include by thing side to image side along optical axis the first lens, it is the second lens, the 3rd saturating Mirror, the 4th lens, the 5th lens, the 6th lens and the 7th lens.Wherein, the 3rd lens have negative power；5th lens With positive light coke or negative power, its image side surface is convex surface；7th lens have positive light coke or negative power, its thing side For concave surface；First lens, the second lens, the 4th lens and the 6th lens have positive light coke or negative power respectively；And institute State the first lens thing side to imaging surface on the optical axis on the imaging surface of TTL and the optical imaging system effectively Met between the half ImgH of pixel region diagonal line length：TTL/ImgH<1.6, for example, TTL/ImgH≤1.546.
The application employs multi-disc (for example, seven) eyeglass, passes through total effective focal length of reasonable distribution optical imaging system Relation between Entry pupil diameters, during thang-kng amount is increased, makes system have under large aperture advantage, enhancing dark situation Imaging effect；Reduce the aberration of peripheral field simultaneously.
According to further aspect of the application, such a optical imaging system is additionally provided, optical imaging system tool There are an effective focal length f and entrance pupil diameter EPD, and sequentially include by thing side to image side along optical axis the first lens, the second lens, the Three lens, the 4th lens, the 5th lens and multiple subsequent lens.Wherein, the 3rd lens have negative power；5th lens have There are positive light coke or negative power, its image side surface is convex surface；First lens, the second lens, the 4th lens have positive light focus respectively Degree or negative power；And the aperture of optical imaging system to imaging surface on optical axis apart from SL and the first lens thing side extremely Imaging surface can be met between TTL on optical axis：SL/TTL<0.85, for example, SL/TTL≤0.808.
In one embodiment, the entrance pupil diameter EPD of the effective focal length f of optical imaging system and optical imaging system Between can meet：f/EPD<1.6, for example, f/EPD≤1.550.
In one embodiment, during center thickness CT1 and the second lens of first lens on optical axis are on optical axis Heart thickness CT2 and the 4th lens can be met between the center thickness CT4 on optical axis：1.5<(CT1+CT2)/CT4<2.3, example Such as：1.880≤(CT1+CT2)/CT4≤2.140.
In one embodiment, during center thickness CT2 and the 4th lens of second lens on optical axis are on optical axis It can be met between heart thickness CT4：0.75<CT2/CT4<1.5, for example：0.794≤CT2/CT4≤1.498.
In one embodiment, the 4th lens thing side and optical axis intersection point to the 4th lens thing side effective radius The intersection point apart from SAG41 and the 4th lens image side surface and optical axis between summit on optical axis is effective to the 4th lens image side surface Can be met between SAG42 on optical axis between radius summit：0<SAG41/SAG42<0.5, for example：0.016≤ SAG41/SAG42≤0.439。
In one embodiment, the combined focal length f12 and the 5th lens and the 6th lens of the first lens and the second lens Combined focal length f56 between can meet：0.6<f12/f56<1.2, for example：0.796≤f12/f56≤1.109.
In one embodiment, effectively the half of the effective radius DT11 of the first lens thing side and the 5th lens image side surface It can be met between the DT52 of footpath：0.7<DT11/DT52<1, for example：0.822≤DT11/DT52≤0.922.
In one embodiment, on the imaging surface of optical imaging system effective pixel area diagonal line length half ImgH It can be met between the effective focal length f of optical imaging system：0.8<ImgH/f<1, for example：0.844≤ImgH/f≤0.871.
In one embodiment, spacing distance T34 and the 4th lens on optical axis of the 3rd lens and the 4th lens and 5th lens can be met between the spacing distance T45 on optical axis：0.5<T34/T45<1, for example：0.540≤T34/T45≤ 0.886。
In one embodiment, it can expire between the effective focal length f5 of the 5th lens and the effective focal length f7 of the 7th lens Foot：1.5<|f5/f7|<2.5, for example：1.506≤|f5/f7|≤2.322.
In one embodiment, the curvature of the lens image side surface of radius of curvature R 13 and the 7th of the 7th lens thing side half It can be met between the R14 of footpath：-1.8<R13/R14<- 1, for example：-1.778≤R13/R14≤-1.099.
By the optical imaging system of above-mentioned configuration, ultra-thin, miniaturization, large aperture, high imaging product are can be further provided with Matter, low sensitivity, balance aberration, preferably disappear at least one beneficial effect such as distortion ability.
Brief description of the drawings
By referring to the detailed description made by the following drawings, the above and further advantage of presently filed embodiment will become Obtain 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 is the structural representation for showing the optical imaging system according to the embodiment of the present application 1；
Fig. 2A shows chromatic curve on the axle of the optical imaging system of embodiment 1；
Fig. 2 B show the astigmatism curve of the optical imaging system of embodiment 1；
Fig. 2 C show the distortion curve of the optical imaging system of embodiment 1；
Fig. 2 D show the ratio chromatism, curve of the optical imaging system of embodiment 1；
Fig. 3 is the structural representation for showing the optical imaging system according to the embodiment of the present application 2；
Fig. 4 A show chromatic curve on the axle of the optical imaging system of embodiment 2；
Fig. 4 B show the astigmatism curve of the optical imaging system of embodiment 2；
Fig. 4 C show the distortion curve of the optical imaging system of embodiment 2；
Fig. 4 D show the ratio chromatism, curve of the optical imaging system of embodiment 2；
Fig. 5 is the structural representation for showing the optical imaging system according to the embodiment of the present application 3；
Fig. 6 A show chromatic curve on the axle of the optical imaging system of embodiment 3；
Fig. 6 B show the astigmatism curve of the optical imaging system of embodiment 3；
Fig. 6 C show the distortion curve of the optical imaging system of embodiment 3；
Fig. 6 D show the ratio chromatism, curve of the optical imaging system of embodiment 3；
Fig. 7 is the structural representation for showing the optical imaging system according to the embodiment of the present application 4；
Fig. 8 A show chromatic curve on the axle of the optical imaging system of embodiment 4；
Fig. 8 B show the astigmatism curve of the optical imaging system of embodiment 4；
Fig. 8 C show the distortion curve of the optical imaging system of embodiment 4；
Fig. 8 D show the ratio chromatism, curve of the optical imaging system of embodiment 4；
Fig. 9 is the structural representation for showing the optical imaging system according to the embodiment of the present application 5；
Figure 10 A show chromatic curve on the axle of the optical imaging system of embodiment 5；
Figure 10 B show the astigmatism curve of the optical imaging system of embodiment 5；
Figure 10 C show the distortion curve of the optical imaging system of embodiment 5；
Figure 10 D show the ratio chromatism, curve of the optical imaging system of embodiment 5；
Figure 11 is the structural representation for showing the optical imaging system according to the embodiment of the present application 6；
Figure 12 A show chromatic curve on the axle of the optical imaging system of embodiment 6；
Figure 12 B show the astigmatism curve of the optical imaging system of embodiment 6；
Figure 12 C show the distortion curve of the optical imaging system of embodiment 6；
Figure 12 D show the ratio chromatism, curve of the optical imaging system of embodiment 6；
Figure 13 is the structural representation for showing the optical imaging system according to the embodiment of the present application 7；
Figure 14 A show chromatic curve on the axle of the optical imaging system of embodiment 7；
Figure 14 B show the astigmatism curve of the optical imaging system of embodiment 7；
Figure 14 C show the distortion curve of the optical imaging system of embodiment 7；
Figure 14 D show the ratio chromatism, curve of the optical imaging system of embodiment 7.
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 illustrative embodiments simply 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 grade is only used for a feature and another feature differentiation Come, and do not indicate that any limitation to feature.Therefore, it is discussed below in the case of without departing substantially from teachings of the present application First lens are also known as the second lens.
In the accompanying drawings, for convenience of description, thickness, the size and dimension of lens are somewhat exaggerated.Specifically, accompanying drawing Shown in sphere or aspherical shape be illustrated by way of example.That is, sphere or aspherical shape is not limited to accompanying drawing In the sphere that shows or aspherical shape.Accompanying drawing is merely illustrative and simultaneously non-critical is drawn to scale.
It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory Represented when being used in bright book exist stated feature, entirety, step, operation, element and/or part, but do not exclude the presence of or It is attached with 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, the whole listed feature of modification, rather than modification Individual component in list.In addition, when describing presently filed embodiment, use " can with " represent " one of the application or Multiple embodiments ".Also, term " exemplary " is intended to refer to example or illustration.
As it is used in the present context, term " substantially ", " about " and similar term are used as the approximate term of table, and The term of table degree is not used as, and is intended to explanation by recognized by those of ordinary skill in the art, measured value or calculated value In inherent variability.
Unless otherwise defined, otherwise all terms (including technical terms and scientific words) used herein be respectively provided with The application one skilled in the art's is generally understood that identical implication.It will also be appreciated that term is (such as in everyday words Term defined in allusion quotation) implication consistent with their implications in the context of correlation technique should be interpreted as having, and It will not explained with idealization or excessively formal sense, unless clearly such herein limit.
In addition, near axis area refers to the region near optical axis.First lens are closest to the lens of object and the 7th lens It is closest to the lens of photo-sensitive cell.Herein, it is referred to as thing side, each lens near the surface of object in each lens In be referred to as image side surface near the surface of imaging surface.
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 application is further described below in conjunction with specific embodiment.
Such as seven lens are had according to the optical imaging system of the application illustrative embodiments, i.e. the first lens, the Two lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens.This seven lens are along optical axis from thing side To image side sequential.The optical imaging system can have effective focal length f and entrance pupil diameter EPD.
In the exemplary embodiment, the 3rd lens can have negative power；5th lens can have positive light coke or negative Focal power, its image side surface is convex surface；7th lens can have positive light coke or negative power, and its thing side is concave surface；And the One lens, the second lens, the 4th lens and the 6th lens can have positive light coke or negative power respectively.By reasonably controlling The positive and negative distribution of the power of lens of each in system, can effectively balance control system low order aberration so that system is obtained Preferably image quality.
In the exemplary embodiment, the first lens thing side to imaging surface on optical axis apart from TTL and optical imagery It can be met between the half ImgH of effective pixel area diagonal line length on the imaging surface of system：TTL/ImgH<1.6, more specifically, TTL/ImgH≤1.546 can further be met.By the optics total length to system and as a high proportion of control, can effectively it press The overall size of contracting optical imaging system, to realize ultra-slim features and the miniaturization of optical imaging system, so that above-mentioned optics Imaging system can preferably be applied to such as limited system of portable type electronic product equidimension.
In the exemplary embodiment, the entrance pupil diameter of the effective focal length f of optical imaging system and optical imaging system It can be met between EPD：f/EPD<1.6, more specifically, f/EPD≤1.550 can further be met.Such configuration can increased During thang-kng amount, make system that there is large aperture, large aperture advantage, so as to strengthen while the aberration of peripheral field is reduced Imaging effect under dark situation so that system has low sensitivity.
In the exemplary embodiment, the aperture of optical imaging system is saturating with first apart from SL on optical axis to imaging surface Mirror thing side can be met between TTL on optical axis to imaging surface：SL/TTL<0.85, more specifically, can further meet SL/TTL≤0.808.By effective control to system optics total length, the miniaturization of system is advantageously implemented.
In the exemplary embodiment, center thickness CT1 and second lens of first lens on optical axis are on optical axis Center thickness CT2 and the 4th lens can be met between the center thickness CT4 on optical axis：1.5<(CT1+CT2)/CT4<2.3, more Specifically, 1.880≤(CT1+CT2)/CT4≤2.140 can further be met.The ratio is then unfavorable for elimination system color very much greatly Difference, it is too small, lens can be caused too thin, manufacturability is not good, meeting above formula can active balance system aberration and manufacturability.
In the exemplary embodiment, center thickness CT2 and fourth lens of second lens on optical axis are on optical axis It can be met between center thickness CT4：0.75<CT2/CT4<1.5, more specifically, can further meet 0.794≤CT2/CT4≤ 1.498.Such configuration contributes to lens dimension to be evenly distributed, ensures assemble stable and the aberration of reduction whole system and contracting The overall length of short optical imaging system.
In the exemplary embodiment, the intersection point of the 4th lens thing side and optical axis is to effectively the half of the 4th lens thing side Intersection point the having to the 4th lens image side surface apart from SAG41 and the 4th lens image side surface and optical axis between the summit of footpath on optical axis Imitate can be met between SAG42 on optical axis between radius summit：0<SAG41/SAG42<0.5, more specifically, one can be entered Step meets 0.016≤SAG41/SAG42≤0.439.The ratio can reduce system and the risk of ghost image occur, and active balance is Size of uniting and manufacturability.
In the exemplary embodiment, the combined focal length f12 and the 5th lens and the 6th of the first lens and the second lens are saturating It can be met between the combined focal length f56 of mirror：0.6<f12/f56<1.2, more specifically, 0.796≤f12/f56 can further be met ≤1.109.The ratio can then make the 5th lens, the 6th lens undertake excessive focal power very much greatly, and manufacturability is too poor and is unfavorable for Aberration is corrected, it is too small, cause the first lens, the second aperture of lens not to be easy to do greatly, cause the vertical manufacturability of group not good.Meet above formula It can effectively ensure that the vertical manufacturability of manufacturability and group of eyeglass.
In the exemplary embodiment, the effective radius DT11 of the first lens thing side and the 5th lens image side surface is effective It can be met between radius DT52：0.7<DT11/DT52<1, more specifically, can further meet 0.822≤DT11/DT52≤ 0.922.The too big miniaturization for being then unfavorable for system of the ratio, it is too small, it is unfavorable for assembling, ratio active balance camera lens chi Very little and manufacturability.
In the exemplary embodiment, on the imaging surface of optical imaging system effective pixel area diagonal line length half It can be met between ImgH and the effective focal length f of optical imaging system：0.8<ImgH/f<1, more specifically, can further meet 0.844≤ImgH/f≤0.871.In the system less than 180 °, under same ImgH, the oversize meaning of focal length is then larger negative abnormal Become, it is too short, poor manufacturability is had, and be difficult to ensure the brightness of edge image planes, above formula is met while having taken into account distortion, is drawn The manufacturability of matter and system.
In the exemplary embodiment, the spacing distance T34 and the 4th lens of the 3rd lens and the 4th lens on optical axis And the 5th can meet between spacing distance T45 of the lens on optical axis：0.5<T34/T45<1, more specifically, can further meet 0.540≤T34/T45≤0.886.Such configuration advantageously ensures that eyeglass moulded manufacturability and assemble stable.
In the exemplary embodiment, it can expire between the effective focal length f5 of the 5th lens and the effective focal length f7 of the 7th lens Foot：1.5<|f5/f7|<2.5, more specifically, can further meet 1.506≤| f5/f7 |≤2.322.Pass through reasonable distribution Five lens and the 7th power of lens, can effectively reduce the aberration of whole system, reduce the sensitiveness of system.
In the application, the radius of curvature of each minute surface can be optimized.For example, in the exemplary embodiment, the 7th is saturating It can be met between the radius of curvature R 14 of the lens image side surface of radius of curvature R 13 and the 7th of mirror thing side：-1.8<R13/R14<- 1, More specifically, -1.778≤R13/R14≤- 1.099 can further be met.Such configuration contributes to the aberration of correction system, The ratio realizes the balance of the various aberrations of optical imaging system.
In the exemplary embodiment, optical imaging system is also provided with the aperture STO for confine optical beam, adjust into Light quantity, improves image quality.According to the optical imaging system of the above-mentioned embodiment of the application can use multi-disc eyeglass, for example on Seven described in text.By between each power of lens of reasonable distribution, face type, the center thickness of each lens and each lens Spacing etc. on axle, can effectively expand aperture, reduction system sensitivity, the miniaturization of guarantee camera lens and the raising of optical imaging system Image quality, so that optical imaging system is more beneficial for producing and processing and being applicable to portable type electronic product.At this In the embodiment of application, at least one in the minute surface of each lens is aspherical mirror.The characteristics of non-spherical lens is：Curvature It is consecutive variations from lens centre to periphery.It is different from there is the spherical lens of constant curvature from lens centre to periphery, aspheric Face lens have more preferably radius of curvature characteristic, have the advantages that to improve and distort aberration and improve astigmatic image error, enable to regard Open country becomes much larger and true.After non-spherical lens, the aberration occurred when imaging can be eliminated as much as possible, so that Improve image quality.In addition, the use of non-spherical lens can also efficiently reduce the lens number in optical system.
However, it will be understood by those of skill in the art that without departing from this application claims technical scheme situation Under, the lens numbers for constituting camera lens can be changed, to obtain each result and the advantage described in this specification.For example, although It is described in embodiment by taking seven lens as an example, but the optical imaging system is not limited to include seven lens.If Need, the optical imaging system may also include the lens of other quantity.
The specific embodiment for the optical imaging system for being applicable to above-mentioned embodiment is further described with reference to the accompanying drawings.
Embodiment 1
The optical imaging system according to the embodiment of the present application 1 is described referring to Fig. 1 to Fig. 2 D.
Fig. 1 shows the structural representation of the optical imaging system according to the embodiment of the present application 1.As shown in figure 1, optics into As system includes from thing side to seven lens L1-L7 into image side sequential along optical axis.First lens L1 has thing side S1 and image side surface S2；Second lens L2 has thing side S3 and image side surface S4；3rd lens L3 has thing side S5 and image side surface S6；4th lens L4 has thing side S7 and image side surface S8；And the 5th lens L5 there is thing side S9 and image side surface S10, the 6th There is lens L6 thing side S11 and image side surface S12 and the 7th lens L7 to have thing side S13 and image side surface S14.In the implementation In example, the 3rd lens can have negative power；5th lens can alternatively have positive light coke or negative power, and its image side surface is Convex surface；7th lens can alternatively have positive light coke or negative power, and its thing side is concave surface；And first lens, second Lens, the 4th lens and the 6th lens alternatively can have positive light coke or negative power respectively.The present embodiment optics into As in system, in addition to for confine optical beam, the aperture STO that is arranged between the second lens L2 and the 3rd lens L3.Come from The light of object sequentially through each surface S1 to S14 and is ultimately imaged on imaging surface S15.
Table 1 show the surface types of each lens of the optical imaging system of embodiment 1, radius of curvature, thickness, material and Circular cone coefficient.
Table 1
Face number Surface type Radius of curvature Thickness Material Circular cone coefficient
OBJ Sphere It is infinite It is infinite
ST1 Sphere It is infinite -0.2272
S1 It is aspherical 2.2340 0.5567 1.546/56.11 -0.1988
S2 It is aspherical 16.9730 0.0300 -0.1744
S3 It is aspherical 11.3936 0.4654 1.546/56.11 0.0583
S4 It is aspherical -10.4770 0.0000 17.4771
STO Sphere It is infinite 0.0200
S5 It is aspherical 3.9593 0.2400 1.666/20.37 -0.7145
S6 It is aspherical 1.9403 0.3838 1.2096
S7 It is aspherical 10.4396 0.4942 1.548/53.38 -0.0961
S8 It is aspherical -21.5320 0.4549 0.0336
S9 It is aspherical -4.2371 0.5227 1.556/47.04 0.0000
S10 It is aspherical -1.8258 0.0300 -0.1739
S11 It is aspherical 15.3152 0.5504 1.666/20.37 0.1080
S12 It is aspherical -32.9581 0.2405 -0.0117
S13 It is aspherical -3.1322 0.3200 1.516/56.11 -0.9757
S14 It is aspherical 2.7023 0.8500 -4.2417
S15 Sphere It is infinite
It can be obtained by table 1, centers of center thickness CT1s and second lens L2 of the first lens L1 on optical axis on optical axis is thick Spend satisfaction (CT1+CT2)/CT4=2.068 between the center thickness CT4 of CT2 and the 4th lens L4 on optical axis；Second lens L2 CT2/CT4=0.942 is met between the center thickness CT4 of center thickness CT2 and the 4th lens L4 on optical axis on optical axis； And the 7th lens L7 things side S13 the lens L7 image side surfaces S14 of radius of curvature R 13 and the 7th radius of curvature R 14 between it is full Sufficient R13/R14=-1.159.
The present embodiment employs seven lens as an example, by the focal length and face type of each eyeglass of reasonable distribution, effectively expanding The aperture of macro lens, shortens camera lens total length, it is ensured that the large aperture of camera lens and miniaturization；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 height be h position when, 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 1 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, which is shown, can be used for each minute surface in embodiment 1 S1-S10 high order term coefficient A4、A6、A8、A10、A12、A16、A18And A20。
Table 2
Face number A4 A6 A8 A10 A12 A14 A16
S1 -3.3159E-02 4.2150E-03 -3.8349E-02 2.2136E-02 -3.6527E-03 0.0000E+00 0.0000E+00
S2 -1.0036E-01 7.7591E-02 -3.7920E-02 1.0045E-02 -8.2398E-04 0.0000E+00 0.0000E+00
S3 -3.0798E-02 8.7207E-02 -4.9014E-02 3.0724E-02 -1.6818E-02 1.5571E-03 6.5540E-04
S4 1.7621E-01 -3.1963E-01 3.9710E-01 -3.8723E-01 2.3812E-01 -7.9721E-02 1.1045E-02
S5 -6.5643E-03 -1.0020E-01 1.6498E-01 -1.7120E-01 1.1011E-01 -3.2501E-02 3.0663E-03
S6 -1.8186E-01 2.4963E-01 -4.3738E-01 5.8029E-01 -4.9153E-01 2.3425E-01 -4.7048E-02
S7 -5.1926E-02 1.6333E-02 -7.9360E-02 1.2052E-01 -1.1126E-01 4.7291E-02 -7.0131E-03
S8 -3.5888E-02 -2.2347E-02 1.4209E-02 -4.3554E-02 4.6604E-02 -2.5628E-02 5.6780E-03
S9 7.7707E-03 -2.3605E-02 1.9999E-03 -7.6956E-04 -4.9704E-04 1.2674E-04 7.7229E-05
S10 -1.8969E-03 6.6284E-02 -9.7368E-02 7.9866E-02 -3.1560E-02 5.9656E-03 -4.3164E-04
S11 -5.7691E-02 2.0152E-02 -7.9912E-02 7.6828E-02 -3.3453E-02 6.9396E-03 -5.5042E-04
S12 6.6745E-02 -9.6011E-02 3.7024E-02 -5.1167E-03 -5.9027E-04 2.4771E-04 -1.9553E-05
S13 1.9421E-03 -7.5590E-03 4.3976E-03 -8.1582E-04 6.7004E-05 -2.0986E-06 0.0000E+00
S14 -1.1855E-01 5.9067E-02 -1.8439E-02 3.5257E-03 -4.0693E-04 2.5811E-05 -6.8283E-07
Table 3 as shown below, which provides the effective focal length f1 to f7 of each lens of embodiment 1, optical imaging system, always to be had Imitate focal length f, the half ImgH of effective pixel area diagonal line length, optical imaging system be most on the imaging surface of optical imaging system Big angle of half field-of view HFOV, the F-number Fno of optical imaging system and the first lens L1 thing side S1 are to optical imaging system Imaging surface S15 on optical axis apart from TTL.
Table 3
f1(mm) 4.650 f(mm) 4.111
f2(mm) 10.073 ImgH 3.582
f3(mm) -5.994 HFOV(°) 40.886
f4(mm) 12.868 Fno 1.55
f5(mm) 5.336 TTL(mm) 5.159
f6(mm) 15.762
f7(mm) -2.607
According to table 3, the first lens L1 thing side S1 to imaging surface S15 on optical axis apart from TTL and optical imagery system On the imaging surface S15 of system TTL/ImgH=1.440 is met between the half ImgH of effective pixel area diagonal line length；Optical imagery On the imaging surface S15 of system between the half ImgH of effective pixel area diagonal line length and the effective focal length f of optical imaging system ImgH/f=0.871 can be met；Met between 5th lens L5 effective focal length f5 and the 7th lens L7 effective focal length f7 | F5/f7 |=2.047.
In this embodiment, between the effective focal length f of optical imaging system and the entrance pupil diameter EPD of optical imaging system Meet f/EPD=1.549；The aperture STO of optical imaging system to imaging surface S15 on optical axis apart from SL and the first lens L1 Thing side S1 to imaging surface S15 meets SL/TTL=0.796 on optical axis between TTL；First lens L1 and second is saturating F12/f56=0.836 is met between mirror L2 combined focal length f12 and the 5th lens L6 and the 6th lens L6 combined focal length f56； The intersection point of 4th lens L4 things side S7 and optical axis between the 4th lens L4 things side S7 effective radius summit on optical axis The intersection point apart from SAG41 and the 4th lens L4 image side surfaces S8 and optical axis to the 4th lens L4 image side surfaces S8 effective radius summit Between SAG41/SAG42=0.208 is met between SAG42 on optical axis；Effectively the half of first lens L1 things side S1 DT11/DT52=0.831 is met between footpath DT11 and the 5th lens L5 image side surfaces S10 effective radius DT52；3rd lens L3 With spacing distance T34 and fourth lens L4 and fiveth lens L5 spacing distances on optical axis of the 4th lens L4 on optical axis T34/T45=0.844 is met between T45.
Fig. 2A shows chromatic curve on the axle of the optical imaging system of embodiment 1, and it represents the light warp of different wave length Deviateed by the converging focal point after optical imaging system.Fig. 2 B show the astigmatism curve of the optical imaging system of embodiment 1, its table Show meridianal image surface bending and sagittal image surface bending.Fig. 2 C show the distortion curve of the optical imaging system of embodiment 1, and it is represented Distortion sizes values in the case of different visual angles.Fig. 2 D show the ratio chromatism, curve of the optical imaging system of embodiment 1, its table Show deviation of the light via the different image heights after optical imaging system on imaging surface.Understood, implemented according to Fig. 2A to Fig. 2 D Optical imaging system given by example 1 can realize good image quality.
Embodiment 2
The optical imaging system according to the embodiment of the present application 2 is described referring to Fig. 3 to Fig. 4 D.Except optical imagery system Outside the parameter of each eyeglass of system, such as except between on the radius of curvature of each eyeglass, thickness, circular cone coefficient, effective focal length, axle Outside, high order term coefficient of each minute surface etc., optical imaging system and reality described in the present embodiment 2 and following embodiment The arrangement for applying optical imaging system described in example 1 is identical.For brevity, it is clipped is similar to Example 1 Description.
Fig. 3 shows the structural representation of the optical imaging system according to the embodiment of the present application 2.As shown in figure 3, according to reality Apply the first to the 7th lens L1-L7 that the optical imaging system of example 2 includes having thing side and image side surface respectively.According to embodiment 2 optical imaging system may include that the optical filter L8 with thing side S15 and image side surface S16, optical filter L8 can be used for correction color Color deviation.Light from object sequentially through each surface S1 to S16 and is ultimately imaged on imaging surface S17.
Table 4 show the surface types of each lens of the optical imaging system of embodiment 2, radius of curvature, thickness, material and Circular cone coefficient.Table 5 shows the high order term coefficient of each aspherical mirror in embodiment 2.Table 6 shows each lens of embodiment 2 Effective focal length f1 to f7, total effective focal length f of optical imaging system, effective pixel area on the imaging surface of optical imaging system The half ImgH of diagonal line length, the maximum angle of half field-of view HFOV of optical imaging system, the F-number Fno of optical imaging system and First lens L1 thing side S1 to optical imaging system imaging surface S17 on optical axis apart from TTL.Wherein, it is each aspherical The formula (1) that face type can be provided in above-described embodiment 1 is limited.
Table 4
Table 5
Face number A4 A6 A8 A10 A12 A14 A16
S1 -3.2744E-02 5.2795E-03 -4.0845E-02 2.3395E-02 -3.7972E-03 0.0000E+00 0.0000E+00
S2 -1.0276E-01 8.0930E-02 -4.1140E-02 1.1343E-02 -9.2288E-04 0.0000E+00 0.0000E+00
S3 -3.0318E-02 8.5611E-02 -4.5254E-02 2.5016E-02 -1.3134E-02 6.8995E-04 7.1454E-04
S4 1.7198E-01 -3.0749E-01 3.7568E-01 -3.5768E-01 2.1400E-01 -6.9660E-02 9.3903E-03
S5 5.1565E-03 -1.3411E-01 1.9716E-01 -1.7668E-01 1.0342E-01 -2.9897E-02 3.0968E-03
S6 -1.5515E-01 1.7176E-01 -3.0974E-01 4.3068E-01 -3.6927E-01 1.7425E-01 -3.4166E-02
S7 -3.9879E-02 -5.4190E-04 -5.3243E-02 9.1570E-02 -9.3519E-02 4.1796E-02 -6.3416E-03
S8 -2.8816E-02 -4.4221E-02 7.3521E-02 -1.3197E-01 1.1686E-01 -5.4277E-02 1.0384E-02
S9 4.4885E-03 -2.2993E-02 2.1724E-03 -7.9266E-04 -5.1539E-04 1.2674E-04 7.7229E-05
S10 6.1058E-03 4.4430E-02 -7.2505E-02 6.4463E-02 -2.6071E-02 4.9226E-03 -3.5114E-04
S11 -5.6433E-02 1.0190E-02 -7.9295E-02 8.3119E-02 -3.7696E-02 8.0404E-03 -6.5164E-04
S12 5.9374E-02 -9.2210E-02 3.1418E-02 -8.7620E-04 -2.2020E-03 5.4416E-04 -4.0327E-05
S13 2.9031E-03 -9.1316E-03 5.1819E-03 -9.9623E-04 8.6355E-05 -2.8932E-06 0.0000E+00
S14 -1.1045E-01 5.2874E-02 -1.6298E-02 3.1585E-03 -3.7700E-04 2.5025E-05 -6.9702E-07
Table 6
f1(mm) 4.628 f(mm) 4.215
f2(mm) 10.573 ImgH 3.582
f3(mm) -6.112 HFOV(°) 39.740
f4(mm) 12.657 Fno 1.55
f5(mm) 5.129 TTL(mm) 5.289
f6(mm) 16.899
f7(mm) -2.674
Fig. 4 A show chromatic curve on the axle of the optical imaging system of embodiment 2, and it represents the light warp of different wave length Deviateed by the converging focal point after optical imaging system.Fig. 4 B show the astigmatism curve of the optical imaging system of embodiment 2, its table Show meridianal image surface bending and sagittal image surface bending.Fig. 4 C show the distortion curve of the optical imaging system of embodiment 2, and it is represented Distortion sizes values in the case of different visual angles.Fig. 4 D show the ratio chromatism, curve of the optical imaging system of embodiment 2, its table Show deviation of the light via the different image heights after optical imaging system on imaging surface.Understood, implemented according to Fig. 4 A to Fig. 4 D Optical imaging system given by example 2 can realize good image quality.
Embodiment 3
The optical imaging system according to the embodiment of the present application 3 is described referring to Fig. 5 to Fig. 6 D.
Fig. 5 shows the structural representation according to the optical imaging system of the embodiment of the present application 3 as shown in figure 5, according to reality Apply the first to the 7th lens L1-L7 that the optical imaging system of example 3 includes having thing side and image side surface respectively.According to embodiment 3 optical imaging system may include that the optical filter L8 with thing side S15 and image side surface S16, optical filter L8 can be used for correction color Color deviation.Light from object sequentially through each surface S1 to S16 and is ultimately imaged on imaging surface S17.
Table 7 show the surface types of each lens of the optical imaging system of embodiment 3, radius of curvature, thickness, material and Circular cone coefficient.Table 8 shows the high order term coefficient of each aspherical mirror in embodiment 3.Table 9 shows each lens of embodiment 3 Effective focal length f1 to f7, total effective focal length f of optical imaging system, effective pixel area on the imaging surface of optical imaging system The half ImgH of diagonal line length, the maximum angle of half field-of view HFOV of optical imaging system, the F-number Fno of optical imaging system and First lens L1 thing side S1 to optical imaging system imaging surface S17 on optical axis apart from TTL.Wherein, it is each aspherical The formula (1) that face type can be provided in above-described embodiment 1 is limited.
Table 7
Table 8
Face number A4 A6 A8 A10 A12 A14 A16
S1 -5.8149E-04 -3.6399E-02 1.2644E-02 -1.0019E-03 -2.3813E-04 0.0000E+00 0.0000E+00
S2 5.4739E-02 -1.2562E-01 9.5557E-02 -3.5476E-02 5.0059E-03 0.0000E+00 0.0000E+00
S3 1.3703E-01 -1.2273E-01 5.9549E-02 3.9948E-02 -6.2921E-02 2.8309E-02 -4.5090E-03
S4 -3.8046E-02 1.4995E-01 -2.7643E-01 2.8481E-01 -1.7406E-01 5.9991E-02 -8.9873E-03
S5 -5.9733E-02 2.0010E-01 -4.1470E-01 4.7036E-01 -3.2122E-01 1.2845E-01 -2.3128E-02
S6 -8.6379E-02 5.8184E-02 8.8610E-04 -1.7473E-01 2.6430E-01 -1.6146E-01 3.7175E-02
S7 -1.9476E-02 -9.5634E-03 6.2008E-02 -1.7552E-01 2.2008E-01 -1.4177E-01 3.6954E-02
S8 -3.9362E-02 -2.6720E-02 4.0196E-02 -6.0524E-02 4.4477E-02 -1.9043E-02 3.6563E-03
S9 -4.3413E-02 -4.5231E-02 8.8334E-03 4.6526E-03 5.6221E-04 -8.0267E-04 7.9569E-05
S10 -1.8526E-01 3.2923E-01 -3.0329E-01 1.5996E-01 -4.3194E-02 5.0302E-03 -1.2724E-04
S11 -3.4748E-01 5.5412E-01 -4.3913E-01 2.0916E-01 -6.1602E-02 1.0120E-02 -6.9687E-04
S12 -6.7169E-02 7.8038E-02 -2.5796E-02 1.5080E-03 8.2932E-04 -1.8008E-04 1.1845E-05
S13 -1.4705E-01 8.0529E-02 -2.0233E-02 3.1515E-03 -3.0959E-04 1.4520E-05 0.0000E+00
S14 -6.2701E-02 2.5425E-02 -7.5540E-03 1.4140E-03 -1.7314E-04 1.3035E-05 -4.5699E-07
Table 9
f1(mm) -615.542 f(mm) 4.197
f2(mm) 3.847 ImgH 3.582
f3(mm) -8.745 HFOV(°) 39.831
f4(mm) 8.529 Fno 1.55
f5(mm) 4.388 TTL(mm) 5.431
f6(mm) -131.285
f7(mm) -2.863
Fig. 6 A show chromatic curve on the axle of the optical imaging system of embodiment 3, and it represents the light warp of different wave length Deviateed by the converging focal point after optical imaging system.Fig. 6 B show the astigmatism curve of the optical imaging system of embodiment 3, its table Show meridianal image surface bending and sagittal image surface bending.Fig. 6 C show the distortion curve of the optical imaging system of embodiment 3, and it is represented Distortion sizes values in the case of different visual angles.Fig. 6 D show the ratio chromatism, curve of the optical imaging system of embodiment 3, its table Show deviation of the light via the different image heights after optical imaging system on imaging surface.Understood, implemented according to Fig. 6 A to Fig. 6 D Optical imaging system given by example 3 can realize good image quality.
Embodiment 4
The optical imaging system according to the embodiment of the present application 4 is described referring to Fig. 7 to Fig. 8 D.
Fig. 7 shows the structural representation of the optical imaging system according to the embodiment of the present application 4.As shown in fig. 7, according to reality Apply the first to the 7th lens L1-L7 that the optical imaging system of example 4 includes having thing side and image side surface respectively.According to embodiment 4 optical imaging system may include that the optical filter L8 with thing side S15 and image side surface S16, optical filter L8 can be used for correction color Color deviation.Light from object sequentially through each surface S1 to S16 and is ultimately imaged on imaging surface S17.
Table 10 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging system of embodiment 4 And circular cone coefficient.Table 11 shows the high order term coefficient of each aspherical mirror in embodiment 4.Table 12 shows each of embodiment 4 The effective focal length f1 to f7 of lens, total effective focal length f of optical imaging system, valid pixel on the imaging surface of optical imaging system The half ImgH of region diagonal line length, the maximum angle of half field-of view HFOV of optical imaging system, the F-number Fno of optical imaging system And first lens L1 thing side S1 to optical imaging system imaging surface S17 on optical axis apart from TTL.Wherein, it is each non- The formula (1) that spherical surface type can be provided in above-described embodiment 1 is limited.
Table 10
Table 11
Face number A4 A6 A8 A10 A12 A14 A16
S1 -1.5643E-02 -1.0490E-02 -2.6942E-03 3.4237E-03 -8.1079E-04 0.0000E+00 0.0000E+00
S2 5.3634E-02 -1.2585E-01 9.7778E-02 -3.6595E-02 5.0409E-03 0.0000E+00 0.0000E+00
S3 1.6921E-01 -2.3324E-01 2.5252E-01 -1.7325E-01 7.8611E-02 -2.1592E-02 2.5917E-03
S4 -2.9663E-02 9.6428E-02 -1.6870E-01 1.6971E-01 -9.5764E-02 2.8616E-02 -3.5841E-03
S5 -4.9737E-02 1.2067E-01 -2.3864E-01 2.7159E-01 -1.8133E-01 6.6603E-02 -1.0419E-02
S6 -8.3288E-02 2.8844E-02 3.8419E-02 -1.5165E-01 1.8822E-01 -1.0866E-01 2.4611E-02
S7 -1.6402E-02 -6.5879E-03 2.9325E-02 -9.3314E-02 1.2163E-01 -7.9098E-02 2.0197E-02
S8 -3.7392E-02 -3.8382E-02 7.4534E-02 -1.1562E-01 9.4542E-02 -4.1199E-02 7.3555E-03
S9 -4.0207E-02 -4.4159E-02 9.2073E-03 4.7940E-03 6.2239E-04 -7.7394E-04 8.0012E-05
S10 -1.7307E-01 2.6742E-01 -2.1281E-01 1.0100E-01 -2.5576E-02 2.9796E-03 -9.8755E-05
S11 -3.1439E-01 4.4473E-01 -2.9798E-01 1.1137E-01 -2.2863E-02 1.8280E-03 4.3976E-05
S12 8.6891E-03 -8.8681E-04 4.5870E-03 6.2987E-04 -1.4274E-03 3.6685E-04 -2.8410E-05
S13 -7.3882E-02 3.2655E-02 -4.5719E-03 2.2544E-04 -3.4911E-06 5.5681E-07 0.0000E+00
S14 -4.3626E-02 1.5312E-02 -3.6665E-03 5.0867E-04 -3.9599E-05 1.4485E-06 -1.4827E-08
Table 12
f1(mm) -46.106 f(mm) 4.200
f2(mm) 3.541 ImgH 3.582
f3(mm) -8.646 HFOV(°) 39.751
f4(mm) 8.596 Fno 1.55
f5(mm) 5.293 TTL(mm) 5.537
f6(mm) 9.934
f7(mm) -2.280
Fig. 8 A show chromatic curve on the axle of the optical imaging system of embodiment 4, and it represents the light warp of different wave length Deviateed by the converging focal point after optical imaging system.Fig. 8 B show the astigmatism curve of the optical imaging system of embodiment 4, its table Show meridianal image surface bending and sagittal image surface bending.Fig. 8 C show the distortion curve of the optical imaging system of embodiment 4, and it is represented Distortion sizes values in the case of different visual angles.Fig. 8 D show the ratio chromatism, curve of the optical imaging system of embodiment 4, its table Show deviation of the light via the different image heights after optical imaging system on imaging surface.Understood, implemented according to Fig. 8 A to Fig. 8 D Optical imaging system given by example 4 can realize good image quality.
Embodiment 5
The optical imaging system according to the embodiment of the present application 5 is described referring to Fig. 9 to Figure 10 D.
Fig. 9 shows the structural representation of the optical imaging system according to the embodiment of the present application 5.As shown in figure 9, according to reality Apply the first to the 7th lens L1-L7 that the optical imaging system of example 5 includes having thing side and image side surface respectively.According to embodiment 5 optical imaging system may include that the optical filter L8 with thing side S15 and image side surface S16, optical filter L8 can be used for correction color Color deviation.Light from object sequentially through each surface S1 to S16 and is ultimately imaged on imaging surface S17.
Table 13 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging system of embodiment 5 And circular cone coefficient.Table 14 shows the high order term coefficient of each aspherical mirror in embodiment 5.Table 15 shows each of embodiment 5 The effective focal length f1 to f7 of lens, total effective focal length f of optical imaging system, valid pixel on the imaging surface of optical imaging system The half ImgH of region diagonal line length, the maximum angle of half field-of view HFOV of optical imaging system, the F-number Fno of optical imaging system And first lens L1 thing side S1 to optical imaging system imaging surface S17 on optical axis apart from TTL.Wherein, it is each non- The formula (1) that spherical surface type can be provided in above-described embodiment 1 is limited.
Table 13
Table 14
Face number A4 A6 A8 A10 A12 A14 A16
S1 -1.4890E-04 -2.6479E-02 -3.6071E-03 6.6299E-03 -1.3033E-03 0.0000E+00 0.0000E+00
S2 4.8527E-02 -9.2259E-02 5.1726E-02 -1.3409E-02 1.2698E-03 0.0000E+00 0.0000E+00
S3 1.1584E-01 -9.0824E-02 7.4141E-02 -3.5265E-02 1.0083E-02 -1.9046E-03 1.7281E-04
S4 -1.6697E-03 6.4238E-06 -1.0481E-08 1.2199E-11 -1.0006E-13 3.4700E-14 -5.8889E-15
S5 -2.5203E-02 3.6812E-03 8.8779E-04 -3.0309E-04 3.3502E-05 -1.6526E-06 3.0816E-08
S6 -8.5001E-02 4.3171E-02 -6.1408E-02 1.0313E-01 -1.0902E-01 5.8888E-02 -1.2673E-02
S7 -2.2233E-02 1.1860E-02 -3.8063E-02 4.5976E-02 -3.3917E-02 1.1182E-02 -1.2771E-03
S8 -4.7491E-02 -6.4657E-03 9.4645E-03 -3.2516E-02 3.0447E-02 -1.3552E-02 2.1677E-03
S9 -4.3630E-02 -4.4889E-02 8.9471E-03 4.6321E-03 4.8670E-04 -8.8643E-04 7.9569E-05
S10 -2.1376E-01 4.2312E-01 -4.2232E-01 2.3787E-01 -7.2729E-02 1.1256E-02 -6.9076E-04
S11 -3.9543E-01 7.0035E-01 -6.1246E-01 3.1748E-01 -1.0022E-01 1.7603E-02 -1.3122E-03
S12 -8.2893E-02 1.1331E-01 -5.3838E-02 1.2594E-02 -1.5823E-03 1.0192E-04 -2.6322E-06
S13 -1.3852E-01 7.0654E-02 -1.5350E-02 1.7796E-03 -1.0563E-04 2.5195E-06 0.0000E+00
S14 -5.1067E-02 1.5706E-02 -3.4328E-03 3.8094E-04 -2.0952E-05 5.6063E-07 -5.8537E-09
Table 15
f1(mm) 4.671 f(mm) 4.102
f2(mm) 11.495 ImgH 3.600
f3(mm) -6.641 HFOV(°) 40.594
f4(mm) 10.457 Fno 1.55
f5(mm) 5.906 TTL(mm) 5.287
f6(mm) 16.650
f7(mm) -2.635
Figure 10 A show chromatic curve on the axle of the optical imaging system of embodiment 5, and it represents the light warp of different wave length Deviateed by the converging focal point after optical imaging system.Figure 10 B show the astigmatism curve of the optical imaging system of embodiment 5, its Represent meridianal image surface bending and sagittal image surface bending.Figure 10 C show the distortion curve of the optical imaging system of embodiment 5, its Represent the distortion sizes values in the case of different visual angles.Figure 10 D show that the ratio chromatism, of the optical imaging system of embodiment 5 is bent Line, it represents deviation of the light via the different image heights after optical imaging system on imaging surface.According to Figure 10 A to Figure 10 D Understand, the optical imaging system given by embodiment 5 can realize good image quality.
Embodiment 6
The optical imaging system according to the embodiment of the present application 6 is described referring to Figure 11 to Figure 12 D.
Figure 11 shows the structural representation of the optical imaging system according to the embodiment of the present application 6.As shown in figure 11, according to The optical imaging system of embodiment 6 includes first to the 7th lens L1-L7 respectively with thing side and image side surface.According to implementation The optical imaging system of example 6 may include that the optical filter L8 with thing side S15 and image side surface S16, optical filter L8 can be used for correcting Color error ratio.Light from object sequentially through each surface S1 to S16 and is ultimately imaged on imaging surface S17.
Table 16 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging system of embodiment 6 And circular cone coefficient.Table 17 shows the high order term coefficient of each aspherical mirror in embodiment 6.Table 18 shows each of embodiment 6 The effective focal length f1 to f7 of lens, total effective focal length f of optical imaging system, valid pixel on the imaging surface of optical imaging system The half ImgH of region diagonal line length, the maximum angle of half field-of view HFOV of optical imaging system, the F-number Fno of optical imaging system And first lens L1 thing side S1 to optical imaging system imaging surface S17 on optical axis apart from TTL.Wherein, it is each non- The formula (1) that spherical surface type can be provided in above-described embodiment 1 is limited.
Table 16
Table 17
Face number A4 A6 A8 A10 A12 A14 A16
S1 4.2125E-03 -3.3195E-02 -2.9426E-03 9.4868E-03 -2.3601E-03 0.0000E+00 0.0000E+00
S2 5.6682E-02 -1.1857E-01 7.8216E-02 -2.3832E-02 2.5499E-03 0.0000E+00 0.0000E+00
S3 1.1710E-01 -9.2202E-02 6.4348E-02 -8.4102E-03 -1.4146E-02 7.2920E-03 -1.0767E-03
S4 -1.6973E-02 7.5507E-02 -1.4263E-01 1.4141E-01 -8.1925E-02 2.6780E-02 -3.8082E-03
S5 -4.0241E-02 9.7083E-02 -2.0962E-01 2.5267E-01 -1.8404E-01 7.8450E-02 -1.4877E-02
S6 -8.5142E-02 5.0245E-02 -4.4159E-02 1.1568E-02 1.4104E-02 -1.1281E-02 2.6108E-03
S7 -1.8938E-02 -1.2362E-03 1.2170E-02 -6.2751E-02 9.0064E-02 -6.5696E-02 1.9176E-02
S8 -4.5024E-02 1.2120E-03 -1.8146E-02 3.4104E-03 5.8017E-03 -7.0060E-03 2.1692E-03
S9 -4.3723E-02 -4.5511E-02 8.7529E-03 4.6436E-03 5.6724E-04 -7.9792E-04 7.9569E-05
S10 -1.8630E-01 3.3290E-01 -3.1158E-01 1.6820E-01 -4.6817E-02 5.7155E-03 -1.6943E-04
S11 -3.4540E-01 5.4635E-01 -4.2615E-01 1.9847E-01 -5.7028E-02 9.1355E-03 -6.1240E-04
S12 -6.6738E-02 7.7769E-02 -2.4667E-02 3.2843E-04 1.3043E-03 -2.6278E-04 1.7034E-05
S13 -1.5037E-01 8.3445E-02 -2.1394E-02 3.4341E-03 -3.4939E-04 1.6887E-05 0.0000E+00
S14 -6.4027E-02 2.5784E-02 -7.7388E-03 1.4592E-03 -1.7829E-04 1.3245E-05 -4.5607E-07
Table 18
f1(mm) 13.418 f(mm) 4.236
f2(mm) 5.571 ImgH 3.582
f3(mm) -9.070 HFOV(°) 39.566
f4(mm) 8.702 Fno 1.55
f5(mm) 4.357 TTL(mm) 5.380
f6(mm) -59.117
f7(mm) -2.892
Figure 12 A show chromatic curve on the axle of the optical imaging system of embodiment 6, and it represents the light warp of different wave length Deviateed by the converging focal point after optical imaging system.Figure 12 B show the astigmatism curve of the optical imaging system of embodiment 6, its Represent meridianal image surface bending and sagittal image surface bending.Figure 12 C show the distortion curve of the optical imaging system of embodiment 6, its Represent the distortion sizes values in the case of different visual angles.Figure 12 D show that the ratio chromatism, of the optical imaging system of embodiment 6 is bent Line, it represents deviation of the light via the different image heights after optical imaging system on imaging surface.According to Figure 12 A to Figure 12 D Understand, the optical imaging system given by embodiment 6 can realize good image quality.
Embodiment 7
The optical imaging system according to the embodiment of the present application 7 is described referring to Figure 13 to Figure 14 D.
Figure 13 shows the structural representation of the optical imaging system according to the embodiment of the present application 7.As shown in figure 13, according to The optical imaging system of embodiment 7 includes first to the 7th lens L1-L7 respectively with thing side and image side surface.According to implementation The optical imaging system of example 7 may include that the optical filter L8 with thing side S15 and image side surface S16, optical filter L8 can be used for correcting Color error ratio.Light from object sequentially through each surface S1 to S16 and is ultimately imaged on imaging surface S17.
Table 19 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging system of embodiment 7 And circular cone coefficient.Table 20 shows the high order term coefficient of each aspherical mirror in embodiment 7.Table 21 shows each of embodiment 7 The effective focal length f1 to f7 of lens, total effective focal length f of optical imaging system, valid pixel on the imaging surface of optical imaging system The half ImgH of region diagonal line length, the maximum angle of half field-of view HFOV of optical imaging system, the F-number Fno of optical imaging system And first lens L1 thing side S1 to optical imaging system imaging surface S17 on optical axis apart from TTL.Wherein, it is each non- The formula (1) that spherical surface type can be provided in above-described embodiment 1 is limited.
Table 19
Table 20
Face number A4 A6 A8 A10 A12 A14 A16
S1 4.2125E-03 -3.3195E-02 -2.9426E-03 9.4868E-03 -2.3601E-03 0.0000E+00 0.0000E+00
S2 5.6682E-02 -1.1857E-01 7.8216E-02 -2.3832E-02 2.5499E-03 0.0000E+00 0.0000E+00
S3 1.1710E-01 -9.2202E-02 6.4348E-02 -8.4102E-03 -1.4146E-02 7.2920E-03 -1.0767E-03
S4 -1.6973E-02 7.5507E-02 -1.4263E-01 1.4141E-01 -8.1925E-02 2.6780E-02 -3.8082E-03
S5 -4.0241E-02 9.7083E-02 -2.0962E-01 2.5267E-01 -1.8404E-01 7.8450E-02 -1.4877E-02
S6 -8.5142E-02 5.0245E-02 -4.4159E-02 1.1568E-02 1.4104E-02 -1.1281E-02 2.6108E-03
S7 -1.8938E-02 -1.2362E-03 1.2170E-02 -6.2751E-02 9.0064E-02 -6.5696E-02 1.9176E-02
S8 -4.5024E-02 1.2120E-03 -1.8146E-02 3.4104E-03 5.8017E-03 -7.0060E-03 2.1692E-03
S9 -4.3723E-02 -4.5511E-02 8.7529E-03 4.6436E-03 5.6724E-04 -7.9792E-04 7.9569E-05
S10 -1.8630E-01 3.3290E-01 -3.1158E-01 1.6820E-01 -4.6817E-02 5.7155E-03 -1.6943E-04
S11 -3.4540E-01 5.4635E-01 -4.2615E-01 1.9847E-01 -5.7028E-02 9.1355E-03 -6.1240E-04
S12 -6.6738E-02 7.7769E-02 -2.4667E-02 3.2843E-04 1.3043E-03 -2.6278E-04 1.7034E-05
S13 -1.5037E-01 8.3445E-02 -2.1394E-02 3.4341E-03 -3.4939E-04 1.6887E-05 0.0000E+00
S14 -6.4027E-02 2.5784E-02 -7.7388E-03 1.4592E-03 -1.7829E-04 1.3245E-05 -4.5607E-07
Table 21
f1(mm) 13.600 f(mm) 4.242
f2(mm) 5.509 ImgH 3.582
f3(mm) -8.911 HFOV(°) 39.672
f4(mm) 8.683 Fno 1.55
f5(mm) 4.388 TTL(mm) 5.380
f6(mm) -93.328
f7(mm) -2.906
Figure 14 A show chromatic curve on the axle of the optical imaging system of embodiment 7, and it represents the light warp of different wave length Deviateed by the converging focal point after optical imaging system.Figure 14 B show the astigmatism curve of the optical imaging system of embodiment 7, its Represent meridianal image surface bending and sagittal image surface bending.Figure 14 C show the distortion curve of the optical imaging system of embodiment 7, its Represent the distortion sizes values in the case of different visual angles.Figure 14 D show that the ratio chromatism, of the optical imaging system of embodiment 7 is bent Line, it represents deviation of the light via the different image heights after optical imaging system on imaging surface.According to Figure 14 A to Figure 14 D Understand, the optical imaging system given by embodiment 7 can realize good image quality.
To sum up, embodiment 1 to embodiment 7 meets the relation shown in table 22 below respectively.
Table 22
Conditional embodiment 1 2 3 4 5 6 7
f/EPD 1.549 1.550 1.550 1.550 1.549 1.550 1.550
TTL/ImgH 1.440 1.476 1.516 1.546 1.469 1.502 1.502
R13/R14 -1.159 -1.343 -1.778 -1.099 -1.206 -1.573 -1.751
|f5/f7| -2.047 -1.918 -1.533 -2.322 -2.241 -1.506 -1.510
T34/T45 0.844 0.886 0.540 0.559 0.866 0.660 0.549
SL/TTL 0.796 0.804 0.803 0.798 0.805 0.808 0.808
(CT1+CT2)/CT4 2.068 2.012 2.094 2.122 1.880 2.001 2.140
CT2/CT4 0.942 0.890 1.498 1.477 0.794 1.397 1.495
SAG41/SAG42 0.208 0.240 0.439 0.016 0.205 0.058 0.053
f12/f56 0.836 0.855 0.855 1.109 0.796 0.841 0.849
DT11/DT52 0.831 0.917 0.848 0.865 0.922 0.822 0.836
ImgH/f 0.871 0.850 0.854 0.853 0.878 0.846 0.844
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 invention scope involved in the application, however it is not limited to the technology of the particular combination of above-mentioned technical characteristic Scheme, while should also cover in the case where not departing from the inventive concept, is carried out by above-mentioned technical characteristic or its equivalent feature Other technical schemes formed by any combination.Such as features described above has similar work(with (but not limited to) disclosed herein The technical characteristic of energy carries out technical scheme formed by replacement mutually.

Claims (13)

1. optical imaging system, with effective focal length f and entrance pupil diameter EPD, the optical imaging system is along optical axis by thing Side to image side sequentially includes the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens and the 7th Lens,
Characterized in that,
3rd lens have negative power；
5th lens have positive light coke or negative power, and its image side surface is convex surface；
7th lens have positive light coke or negative power, and its thing side is concave surface；
First lens, second lens, the 4th lens and the 6th lens have positive light coke or negative respectively Focal power；And
Imaging surface apart from TTL and the optical imaging system of the first lens thing side to imaging surface on the optical axis Met between the half ImgH of upper effective pixel area diagonal line length：TTL/ImgH<1.6.
2. optical imaging system according to claim 1, full between the effective focal length f and the entrance pupil diameter EPD Foot：f/EPD<1.6.
3. optical imaging system according to claim 1 or 2, it is characterised in that the aperture of the optical imaging system is extremely The distance apart from SL and first lens thing side to imaging surface on the optical axis of the imaging surface on the optical axis Met between TTL：SL/TTL<0.85.
4. optical imaging system according to claim 1 or 2, it is characterised in that first lens are on the optical axis Center thickness CT2 on the optical axis of center thickness CT1 and second lens with the 4th lens in the optical axis On center thickness CT4 between meet：1.5<(CT1+CT2)/CT4<2.3.
5. optical imaging system according to claim 4, it is characterised in that institute of second lens on the optical axis State satisfaction between the center thickness CT4 of center thickness CT2 and the 4th lens on the optical axis：0.75<CT2/CT4 <1.5。
6. optical imaging system according to claim 1 or 2, it is characterised in that 0<SAG41/SAG42<0.5,
Wherein, SAG41 represents intersection point the having to the 4th lens thing side of the 4th lens thing side and the optical axis Distance between effect radius summit on the optical axis；And
SAG42 represents the intersection point of the 4th lens image side surface and the optical axis to the effective radius of the 4th lens image side surface Distance between summit on the optical axis.
7. optical imaging system according to claim 1 or 2, it is characterised in that first lens and described second saturating Met between the combined focal length f12 of mirror and the 5th lens and the combined focal length f56 of the 6th lens：0.6<f12/f56< 1.2。
8. optical imaging system according to claim 1 or 2, it is characterised in that the first lens thing side it is effective Met between the effective radius DT52 of radius DT11 and the 5th lens image side surface：0.7<DT11/DT52<1.
9. optical imaging system according to claim 1 or 2, it is characterised in that the imaging surface of the optical imaging system Met between the half ImgH of upper effective pixel area diagonal line length and the effective focal length f of the optical imaging system：0.8 <ImgH/f<1。
10. optical imaging system according to claim 1 or 2, it is characterised in that the 3rd lens and described 4th saturating Spacing distance T34 of the mirror on the optical axis and the spacing distance of the 4th lens and the 5th lens on the optical axis Met between T45：0.5<T34/T45<1.
11. optical imaging system according to claim 1 or 2, it is characterised in that the effective focal length f5 of the 5th lens Met between the effective focal length f7 of the 7th lens：1.5<|f5/f7|<2.5.
12. optical imaging system according to claim 11, it is characterised in that the curvature of the 7th lens thing side half Met between the radius of curvature R 14 of footpath R13 and the 7th lens image side surface：-1.8<R13/R14<-1.
13. optical imaging system, with effective focal length f and entrance pupil diameter EPD, the optical imaging system is along optical axis by thing Side to image side sequentially includes the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and multiple subsequent lens,
Characterized in that,
3rd lens have negative power；
5th lens have positive light coke or negative power, and its image side surface is convex surface；
First lens, second lens, the 4th lens have positive light coke or negative power respectively；And
The aperture of the optical imaging system to imaging surface on the optical axis apart from SL and the first lens thing side extremely Imaging surface being met between TTL on the optical axis：SL/TTL<0.85.
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