CN109407284A - Optical imaging system - Google Patents

Optical imaging system Download PDF

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Publication number
CN109407284A
CN109407284A CN201811600411.9A CN201811600411A CN109407284A CN 109407284 A CN109407284 A CN 109407284A CN 201811600411 A CN201811600411 A CN 201811600411A CN 109407284 A CN109407284 A CN 109407284A
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CN
China
Prior art keywords
lens
imaging system
object side
optical imaging
optical
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Granted
Application number
CN201811600411.9A
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Chinese (zh)
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CN109407284B (en
Inventor
黄林
戴付建
赵烈烽
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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Application filed by Zhejiang Sunny Optics Co Ltd filed Critical Zhejiang Sunny Optics Co Ltd
Priority to CN201811600411.9A priority Critical patent/CN109407284B/en
Priority to CN202111254754.6A priority patent/CN113917661B/en
Publication of CN109407284A publication Critical patent/CN109407284A/en
Priority to PCT/CN2019/095606 priority patent/WO2020134026A1/en
Application granted granted Critical
Publication of CN109407284B publication Critical patent/CN109407284B/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 systems, by object side to image side sequentially include: the first lens, the second lens, the third lens, the 4th lens and the 5th lens along optical axis.Wherein, the first lens have positive light coke, and object side is convex surface；Second lens have negative power；The third lens have negative power, and image side surface is concave surface；4th lens have positive light coke or negative power；5th lens have negative power, and object side is concave surface.The object side of first lens to optical imaging system imaging surface on distance TTL, total effective focal length f of optical imaging system and the imaging surface of optical imaging system on optical axis the half ImgH of effective pixel area diagonal line length satisfy the following conditional expression: TTL/f≤0.95；And f/ImgH > 4.5.

Description

Optical imaging system
Technical field
This application involves a kind of optical imaging systems, more particularly, to a kind of optical imagery system including five lens System.
Background technique
In recent years, keeping updating with electronic products such as smart phone, plates, the optical imagery being applied thereon Systems face the challenge of high pixel, low cost, ultrathin.However, for most of low and middle-end type, for cost control System considers that the lens system of five chips is still its important selection.
Camera lens high-resolution and lightening is increasingly pursued by major intelligent terminal manufacturer, super large work image planes and short system it is total It is grown to the principal element of major intelligent terminal manufacturer concern.Super large work image planes mean that higher image resolution may be provided Rate, short system overall length mean that camera lens can be more lightening.While realization reduces cost realize super large work image planes and Short system overall length greatly improves the design difficulty of optical system.
Summary of the invention
This application provides be applicable to portable electronic product, can at least solve or part solve it is in the prior art The optical imaging system of at least one above-mentioned disadvantage.
On the one hand, this application provides such a optical imaging systems, are sequentially wrapped along optical axis by object side to image side It includes: the first lens, the second lens, the third lens, the 4th lens and the 5th lens.Wherein, the first lens can have positive light coke, Its object side can be convex surface；Second lens can have negative power；The third lens can have negative power, and image side surface can be recessed Face；4th lens have positive light coke or negative power；5th lens can have negative power, and object side can be concave surface.Its In, distance TTL of the imaging surface of the object side of the first lens to optical imaging system on optical axis, optical imaging system always have The half ImgH of effective pixel area diagonal line length can meet the following conditions on the imaging surface of effect focal length f and optical imaging system Formula: TTL/f≤0.95；And f/ImgH > 4.5.
In one embodiment, the radius of curvature R 9 of the object side of the 5th lens and the effective focal length f5 of the 5th lens can Meet 0 < R9/f5 < 1.
In one embodiment, the effective focal length f2 of the second lens and the effective focal length f3 of the third lens can meet 0 < F2/f3 < 1.
In one embodiment, the curvature of the image side surface of the radius of curvature R 1 and the third lens of the object side of the first lens Radius R6 can meet 0 < R1/R6 < 1.4.
In one embodiment, center thickness CT1, second lens center on optical axis of first lens on optical axis The effective focal length f1 of thickness CT2 and the first lens can meet 0 < (CT1+CT2)/f1 < 0.7.
In one embodiment, the abbe number V2 of the second lens, the abbe number V3 and the 4th of the third lens are saturating The abbe number V4 of mirror can meet 30 < (V2+V3+V4)/3 < 40.
In one embodiment, spacing distance T12 and the 4th lens on optical axis of the first lens and the second lens and Spacing distance T45 of 5th lens on optical axis can meet 0 < T12*T45 < 0.2mm2。
In one embodiment, center thickness CT3, fourth lens center on optical axis of the third lens on optical axis The center thickness CT5 of thickness CT4 and the 5th lens on optical axis can meet 0 < CT5/ (CT3+CT4) < 0.5.
In one embodiment, the object side of the first lens to optical imaging system distance of the imaging surface on optical axis TTL and the first lens the summation ∑ AT of spacing distance of two lens of arbitrary neighborhood on optical axis into the 5th lens can meet 4 < TTL/ ∑ AT < 5.
In one embodiment, the object side of maximum the effective radius DT11 and the 5th lens of the object side of the first lens Maximum effective radius DT51 can meet 1 < DT11/DT51 < 2.
In one embodiment, the object side of the maximum effective radius DT21, the 4th lens of the object side of the second lens Maximum effective radius DT41 and optical imaging system imaging surface on the half ImgH of effective pixel area diagonal line length can Meet 1 < (DT21+DT41)/ImgH < 1.5.
On the other hand, this application provides such a optical imaging system, along optical axis by object side to image side sequentially It include: the first lens, the second lens, the third lens, the 4th lens and the 5th lens.Wherein, the first lens can have positive light focus Degree, object side can be convex surface；Second lens can have negative power；The third lens can have negative power, and image side surface can For concave surface；4th lens have positive light coke or negative power；5th lens can have negative power, and object side can be recessed Face.Wherein, the object side of the first lens is to distance TTL of the imaging surface on optical axis of optical imaging system and the first lens to The summation ∑ AT of spacing distance of two lens of arbitrary neighborhood on optical axis can meet 4 < TTL/ ∑ AT < 5 in five lens.
In one embodiment, the object side of the first lens to optical imaging system distance of the imaging surface on optical axis Total effective focal length f of TTL and optical imaging system can meet TTL/f < 1.
In one embodiment, have on total effective focal length f of optical imaging system and the imaging surface of optical imaging system The half ImgH of effect pixel region diagonal line length can meet f/ImgH > 4.5.
In another aspect, this application provides such a optical imaging system, along optical axis by object side to image side sequentially It include: the first lens, the second lens, the third lens, the 4th lens and the 5th lens.Wherein, the first lens can have positive light focus Degree, object side can be convex surface；Second lens can have negative power；The third lens can have negative power, and image side surface can For concave surface；4th lens have positive light coke or negative power；5th lens can have negative power, and object side can be recessed Face.Wherein, the maximum effective radius of the object side of the maximum effective radius DT11 and the 5th lens of the object side of the first lens DT51 can meet 1 < DT11/DT51 < 2.
In another aspect, this application provides such a optical imaging system, along optical axis by object side to image side sequentially It include: the first lens, the second lens, the third lens, the 4th lens and the 5th lens.Wherein, the first lens can have positive light focus Degree, object side can be convex surface；Second lens can have negative power；The third lens can have negative power, and image side surface can For concave surface；4th lens have positive light coke or negative power；5th lens can have negative power, and object side can be recessed Face.Wherein, the maximum effective radius DT21 of the object side of the second lens, the object side of the 4th lens maximum effective radius DT41 And on the imaging surface of optical imaging system the half ImgH of effective pixel area diagonal line length can meet 1 < (DT21+DT41)/ ImgH < 1.5.
The application use five lens, by each power of lens of reasonable distribution, face type, each lens center thickness And spacing etc. on the axis between each lens, so that above-mentioned optical imaging system has ultrathin, high resolution, low cost etc. extremely A few beneficial effect.
Detailed description of the invention
In conjunction with attached drawing, by the detailed description of following non-limiting embodiment, other features of the application, purpose and excellent Point will be apparent.In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of the optical imaging system according to the embodiment of the present application 1；
Fig. 2A to Fig. 2 D respectively illustrates chromatic curve on the axis of the optical imaging system of embodiment 1, astigmatism curve, distortion Curve and ratio chromatism, curve；
Fig. 3 shows the structural schematic diagram of the optical imaging system according to the embodiment of the present application 2；
Fig. 4 A to Fig. 4 D respectively illustrates chromatic curve on the axis of the optical imaging system of embodiment 2, astigmatism curve, distortion Curve and ratio chromatism, curve；
Fig. 5 shows the structural schematic diagram of the optical imaging system according to the embodiment of the present application 3；
Fig. 6 A to Fig. 6 D respectively illustrates chromatic curve on the axis of the optical imaging system of embodiment 3, astigmatism curve, distortion Curve and ratio chromatism, curve；
Fig. 7 shows the structural schematic diagram of the optical imaging system according to the embodiment of the present application 4；
Fig. 8 A to Fig. 8 D respectively illustrates chromatic curve on the axis of the optical imaging system of embodiment 4, astigmatism curve, distortion Curve and ratio chromatism, curve；
Fig. 9 shows the structural schematic diagram of the optical imaging system according to the embodiment of the present application 5；
Figure 10 A to Figure 10 D respectively illustrates chromatic curve on the axis of the optical imaging system of embodiment 5, astigmatism curve, abnormal Varied curve and ratio chromatism, curve；
Figure 11 shows the structural schematic diagram of the optical imaging system according to the embodiment of the present application 6；
Figure 12 A to Figure 12 D respectively illustrates chromatic curve on the axis of the optical imaging system of embodiment 6, astigmatism curve, abnormal Varied curve and ratio chromatism, curve；
Figure 13 shows the structural schematic diagram of the optical imaging system according to the embodiment of the present application 7；
Figure 14 A to Figure 14 D respectively illustrates chromatic curve on the axis of the optical imaging system of embodiment 7, astigmatism curve, abnormal Varied curve and ratio chromatism, curve.
Specific embodiment
Various aspects of the reference attached drawing to the application are made more detailed description by the application in order to better understand.It answers Understand, the only description to the illustrative embodiments of the application is described in detail in these, rather than limits the application in any way Range.In the specification, the identical element of identical reference numbers.Stating "and/or" includes associated institute Any and all combinations of one or more of list of items.
It should be noted that in the present specification, first, second, third, etc. statement is only used for a feature and another spy Sign distinguishes, without indicating any restrictions to feature.Therefore, without departing substantially from teachings of the present application, hereinafter The first lens discussed are also known as the second lens or the third lens.
In the accompanying drawings, for ease of description, thickness, the size and shape of lens are slightly exaggerated.Specifically, attached drawing Shown in spherical surface or aspherical shape be illustrated by way of example.That is, spherical surface or aspherical shape are not limited to attached drawing Shown in spherical surface or aspherical shape.Attached drawing is merely illustrative and and non-critical drawn to scale.
Herein, near axis area refers to the region near optical axis.If lens surface is convex surface and does not define convex surface position When setting, then it represents that the lens surface is convex surface near axis area is less than；If lens surface is concave surface and does not define the concave surface position When, then it represents that the lens surface is concave surface near axis area is less than.Each lens are known as this thoroughly near the surface of subject The object side of mirror, each lens are known as the image side surface of the lens near the surface of imaging surface.
It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory It indicates there is stated feature, element and/or component when using in bright book, but does not preclude the presence or addition of one or more Other feature, component, assembly unit and/or their combination.In addition, ought the statement of such as at least one of " ... " appear in institute When after the list of column feature, entire listed feature is modified, rather than modifies the individual component in list.In addition, when describing this When the embodiment of application, " one or more embodiments of the application " are indicated using "available".Also, term " illustrative " It is intended to refer to example or illustration.
Unless otherwise defined, otherwise all terms (including technical terms and scientific words) used herein all have with The application one skilled in the art's is generally understood identical meaning.It will also be appreciated that term (such as in everyday words Term defined in allusion quotation) it should be interpreted as having and their consistent meanings of meaning in the context of the relevant technologies, and It will not be explained with idealization or excessively formal sense, unless clear herein so limit.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.The application is described 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.
Optical imaging system according to the application illustrative embodiments may include such as five lens with focal power, That is, the first lens, the second lens, the third lens, the 4th lens and the 5th lens.This five lens are along optical axis by object side to picture Side sequential.In the first lens into the 5th lens, can have airspace between two lens of arbitrary neighborhood.
In the exemplary embodiment, the first lens can have positive light coke, and object side can be convex surface；Second lens can With negative power；The third lens can have negative power, and image side surface can be concave surface；4th lens have positive light coke or negative Focal power；5th lens can have negative power, and object side can be concave surface.The first lens of reasonable distribution having to the 5th lens Effect focal length can reduce the deviation angle of light, reduces the tolerance sensitivity of each lens, improves the image quality of optical system.
In the exemplary embodiment, conditional TTL/f < 1 can be met according to the optical imaging system of the application, wherein TTL is the object side of the first lens to distance of the imaging surface on optical axis of optical imaging system, and f is the total of optical imaging system Effective focal length.More specifically, TTL and f can further meet 0.88≤TTL/f≤0.95.The size of system is effectively had compressed, Guarantee camera lens compact dimensioning characteristic, while reasonably increasing image planes size, guarantees in the case where taking into account ultra-thin and big image planes Preferable image quality.
In the exemplary embodiment, conditional f/ImgH > 4.5 can be met according to the optical imaging system of the application, In, f is total effective focal length of optical imaging system, and ImgH is effective pixel area diagonal line on the imaging surface of optical imaging system Long half.More specifically, f and ImgH can further meet 4.90≤f/ImgH≤5.36.Meet conditional f/ImgH > 4.5, it is advantageously implemented the characteristic of focal length and super large work image planes.
In the exemplary embodiment, 0 < R9/f5 < 1 of conditional can be met according to the optical imaging system of the application, In, f5 is the effective focal length of the 5th lens, and R9 is the radius of curvature of the object side of the 5th lens.More specifically, f5 and R9 is into one Step can meet 0.25≤R9/f5≤0.63.By the ratio for rationally controlling the 5th lens effective focal length and its object flank radius Value in a certain range, can control peripheral field in the deflection angle of the 5th lens, can effectively reduce the quick of system Perception, while the image side surface edge face inclination angle of the 5th lens is reduced, eliminate the risk that ghost image generates herein.
In the exemplary embodiment, 0 < f2/f3 < 1 of conditional can be met according to the optical imaging system of the application, In, f2 is the effective focal length of the second lens, and f3 is the effective focal length of the third lens.More specifically, f2 and f3 can further meet 0.06≤f2/f3≤0.80.The focal power of reasonable distribution the second lens and the third lens, is capable of the aberration of balance system, so that Optical system has preferable balanced capacity.
In the exemplary embodiment, 0 < R1/R6 < 1.4 of conditional can be met according to the optical imaging system of the application, Wherein, R1 is the radius of curvature of the object side of the first lens, and R6 is the radius of curvature of the image side surface of the third lens.More specifically, R1 and R6 can further meet 0.04≤R1/R6≤1.10.The rationally radius of curvature ratio of setting the first lens and the third lens, It can reduce the deflection angle of light, the aberration of balance system can be easier to, improve the image quality of system.
In the exemplary embodiment, according to the optical imaging system of the application can meet 0 < of conditional (CT1+CT2)/ F1 < 0.7, wherein f1 is the effective focal length of the first lens, and CT1 is center thickness of first lens on optical axis, CT2 second Center thickness of the lens on optical axis.More specifically, f1, CT1 and CT2 can further meet 0.2 < (CT1+CT2)/f1 < 0.6, for example, 0.34≤(CT1+CT2)/f1≤0.48.By rationally controlling the first lens effective focal length and the first lens and the The ratio of the sum of the center thickness of two lens in a certain range, can guarantee that the first lens and the second lens arrangement are reasonable While the curvature of field and astigmatism of system are corrected using the first, second lens.
In the exemplary embodiment, 30 < (V2+V3+ of conditional can be met according to the optical imaging system of the application V4)/3 < 40, wherein V2 is the abbe number of the second lens, and V3 is the abbe number of the third lens, and V4 is the color of the 4th lens Dissipate coefficient.More specifically, V2, V3 and V4 can further meet 30 < (V2+V3+V4)/3 < 35, for example, (V2+V3+V4)/3= 33.34.The various combination for realizing different optical materials can effectively reduce the color difference of optical system, improve the resolving power of camera lens.
In the exemplary embodiment, 0 < T12*T45 < of conditional can be met according to the optical imaging system of the application 0.2mm2, wherein T12 is the spacing distance of the first lens and the second lens on optical axis, and T45 is the 4th lens and the 5th lens Spacing distance on optical axis.More specifically, T12 and T45 can further meet 0.04mm2≤T12*T45≤0.15mm2.Pass through The relational expression is controlled, the ability for making optical system have preferable balance dispersion is reached using the light path of adjustment airspace To the purpose of effective focal length control.
In the exemplary embodiment, 0 < CT5/ (CT3+ of conditional can be met according to the optical imaging system of the application CT4) 0.5 <, wherein CT3 is center thickness of the third lens on optical axis, and CT4 is that center of the 4th lens on optical axis is thick Degree, CT5 are center thickness of the 5th lens on optical axis.More specifically, CT3, CT4 and CT5 can further meet 0.2 < CT5/ (CT3+CT4) 0.5 <, for example, 0.22≤CT5/ (CT3+CT4)≤0.39.Reasonably it is distributed the third lens, the 4th lens and the The center thickness of five lens can make optical system have the energy of preferably balance aberration while guaranteeing good processability Power.
In the exemplary embodiment, 4 < TTL/ ∑ AT < of conditional can be met according to the optical imaging system of the application 5, wherein TTL is the object side of the first lens to distance of the imaging surface on optical axis of optical imaging system, and ∑ AT is first thoroughly The summation of the mirror spacing distance of two lens of arbitrary neighborhood on optical axis into the 5th lens.More specifically, TTL and ∑ AT are further 4.18≤TTL/ ∑ AT≤4.83 can be met.Rationally airspace and first lens object side of the control lens on axis are extremely imaged Distance on the axis in face, it is ensured that the overall length of optical imaging lens in the appropriate range, while being conducive to adjust optical imaging lens Structure, reduce machining eyeglass and assembling difficulty.
In the exemplary embodiment, 1 < DT11/DT51 < of conditional can be met according to the optical imaging system of the application 2, wherein DT11 is the maximum effective radius of the object side of the first lens, and DT51 is that the maximum of the object side of the 5th lens is effective Radius.More specifically, DT11 and DT51 can further meet 1.1 < DT11/DT51 < 1.6, for example, 1.26≤DT11/DT51 ≤1.48.Rationally the maximum effective radius of the first lens of control and the 5th lens can reduce the volume on camera lens head, accomplish small The effect on head is conducive to the screen accounting for improving mobile phone.
In the exemplary embodiment, 1 < (DT21+ of conditional can be met according to the optical imaging system of the application DT41)/ImgH < 1.5, wherein DT21 is the maximum effective radius of the object side of the second lens, and DT41 is the object of the 4th lens The maximum effective radius of side, ImgH are the half of effective pixel area diagonal line length on the imaging surface of optical imaging system.More Specifically, DT21, DT41 and ImgH can further meet 1.21≤(DT21+DT41)/ImgH≤1.32.Rationally control second is thoroughly The maximum effective radius of mirror and the 4th lens can reduce lens body while guaranteeing the characteristic of big image planes of optical system Product.
In the exemplary embodiment, above-mentioned optical imaging system may also include diaphragm.Object side can be for example arranged in diaphragm Between the first lens.It will be appreciated by those skilled in the art that appointing between object side and image side can be set as needed in diaphragm At meaning position.
Optionally, above-mentioned optical imaging system may also include optical filter for correcting color error ratio and/or for protecting The protection glass of photosensitive element on imaging surface.
Multi-disc eyeglass, such as described above five can be used according to the optical imaging system of the above embodiment of the application Piece.By each power of lens of reasonable distribution, face type, each lens center thickness and each lens between axis on spacing Deng can effectively reduce the volume of imaging system, reduce the susceptibility of imaging system and improve the machinability of imaging system, make Optical imaging system is obtained to be more advantageous to production and processing and be applicable to portable electronic product.Optics through the above configuration at As system can also have the beneficial effects such as ultra-thin, big image planes, high resolution, low cost, high imaging quality, can better meet The use demand of most of mobile lens.
In presently filed embodiment, at least one of mirror surface of each lens is aspherical mirror, that is, first thoroughly Mirror, the second lens, the third lens, the 4th lens and each lens in the 5th lens object side and image side surface at least one A is aspherical mirror.The characteristics of non-spherical lens is: from lens centre to lens perimeter, curvature is consecutive variations.With from Lens centre has the spherical lens of constant curvature different to lens perimeter, and non-spherical lens has more preferably radius of curvature special Property, have the advantages that improve and distorts aberration and improvement astigmatic image error.After non-spherical lens, can eliminate as much as possible at As when the aberration that occurs, so as to improve image quality.Optionally, the first lens, the second lens, the third lens, the 4th thoroughly The object side and image side surface of mirror and each lens in the 5th lens are aspherical mirror.
However, it will be understood by those of skill in the art that without departing from this application claims technical solution the case where Under, the lens numbers for constituting optical imaging system can be changed, to obtain each result and advantage described in this specification.Example Such as, although being described by taking five lens as an example in embodiments, which is not limited to include five Lens.If desired, the optical imaging system may also include the lens of other quantity.
The specific embodiment for being applicable to the optical imaging system of above embodiment is further described with reference to the accompanying drawings.
Embodiment 1
Referring to Fig. 1 to Fig. 2 D description according to the optical imaging system of the embodiment of the present application 1.Fig. 1 is shown according to this Apply for the structural schematic diagram of the optical imaging system of embodiment 1.
As shown in Figure 1, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, optical filter E6 and imaging surface S13.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is convex surface.Second lens E2 has Negative power, object side S3 are concave surface, and image side surface S4 is concave surface.The third lens E3 has negative power, and object side S5 is Convex surface, image side surface S6 are concave surface.4th lens E4 has positive light coke, and object side S7 is convex surface, and image side surface S8 is at paraxial place For plane.5th lens E5 has negative power, and object side S9 is concave surface, and image side surface S10 is plane at paraxial place.Optical filter E6 has object side S11 and image side surface S12.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged and is being imaged On the S13 of face.
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, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 1
In embodiment 1, the object side of any one lens of the first lens E1 into the 5th lens E5 and image side surface are equal To be aspherical, the face type x of each non-spherical lens is available but is not limited to following aspherical formula and is defined:
Wherein, x be it is aspherical along optical axis direction when being highly the position of h, away from aspheric vertex of surface apart from rise；C is Aspherical paraxial curvature, c=1/R (that is, inverse that paraxial curvature c is upper 1 mean curvature radius R of table)；K is circular cone coefficient；Ai It is the correction factor of aspherical i-th-th rank.The following table 2 gives the high order that can be used for each aspherical mirror S1-S10 in embodiment 1 Term coefficient A4、A6、A8、A10、A12、A14、A16、A18And A20。
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -1.1267E-03 2.3655E-04 -1.0395E-04 -4.4283E-05 6.5201E-05 -3.1763E-05 8.1863E-06 -1.1290E-06 6.5761E-08
S2 -1.5884E-02 3.4614E-02 -3.6444E-02 2.2487E-02 -8.4701E-03 1.9443E-03 -2.6040E-04 1.8067E-05 -4.6414E-07
S3 -1.0049E-02 2.9515E-02 -3.2400E-02 2.0340E-02 -7.7927E-03 1.8290E-03 -2.5318E-04 1.8645E-05 -5.5069E-07
S4 5.0337E-03 2.5450E-03 -2.2562E-03 -1.7734E-04 1.0875E-03 -7.4588E-04 2.6000E-04 -4.6637E-05 3.3130E-06
S5 -1.1579E-02 9.0709E-03 -2.9319E-03 -2.9917E-03 4.0812E-03 -2.4223E-03 8.4156E-04 -1.6080E-04 1.2726E-05
S6 -1.5881E-02 1.0964E-02 -8.1716E-03 4.3912E-03 -2.4041E-03 1.0201E-03 -1.7667E-04 -1.7920E-05 7.0101E-06
S7 -1.1070E-02 1.8860E-03 -1.3639E-03 -4.1375E-03 4.9686E-03 -3.0141E-03 1.0732E-03 -2.0442E-04 1.6632E-05
S8 -9.9748E-03 2.5892E-03 -5.5357E-03 2.5812E-03 -1.1801E-03 4.5465E-04 -5.9080E-05 -1.8987E-05 5.8243E-06
S9 -8.8786E-02 4.5386E-02 -4.6454E-02 4.5347E-02 -4.1493E-02 2.8458E-02 -1.2638E-02 3.1688E-03 -3.3570E-04
S10 -4.0147E-02 1.5395E-02 -2.3209E-02 3.3337E-02 -3.2725E-02 2.0345E-02 -7.6585E-03 1.5929E-03 -1.4033E-04
Table 2
Table 3 gives half ImgH, the first lens of effective pixel area diagonal line length on imaging surface S13 in embodiment 1 Distance TTL, maximum angle of half field-of view HFOV, f-number Fno, optical imagery of the object side S1 to imaging surface S13 of E1 on optical axis Total effective focal length f of the system and effective focal length f1 to f5 of each lens.
ImgH(mm) 2.70 f1(mm) 5.56
TTL(mm) 12.67 f2(mm) -11.36
HFOV(°) 10.4 f3(mm) -26.55
Fno 3.47 f4(mm) 34.70
f(mm) 14.47 f5(mm) -12.26
Table 3
Optical imaging system in embodiment 1 meets:
TTL/f=0.88, wherein TTL is distance of the object side S1 of the first lens E1 to imaging surface S13 on optical axis, f For total effective focal length of optical imaging system；
F/ImgH=5.36, wherein f is total effective focal length of optical imaging system, and ImgH is effective picture on imaging surface S13 The half of plain region diagonal line length；
R9/f5=0.55, wherein f5 is the effective focal length of the 5th lens E5, and R9 is the object side S9's of the 5th lens E5 Radius of curvature；
F2/f3=0.43, wherein f2 is the effective focal length of the second lens E2, and f3 is the effective focal length of the third lens E3；
R1/R6=0.61, wherein R1 is the radius of curvature of the object side S1 of the first lens E1, and R6 is the third lens E3's The radius of curvature of image side surface S6；
(CT1+CT2)/f1=0.43, wherein f1 is the effective focal length of the first lens E1, and the first lens of CT1 E1 is in optical axis On center thickness, center thickness of the second lens of CT2 E2 on optical axis；
(V2+V3+V4)/3=33.34, wherein V2 is the abbe number of the second lens E2, and V3 is the color of the third lens E3 Coefficient is dissipated, V4 is the abbe number of the 4th lens E4；
T12*T45=0.04mm2, wherein T12 is the spacing distance of the first lens E1 and the second lens E2 on optical axis, Spacing distance of T45 the 4th lens E4 and the 5th lens E5 on optical axis；
CT5/ (CT3+CT4)=0.27, wherein CT3 is center thickness of the third lens E3 on optical axis, and CT4 is the 4th Center thickness of the lens E4 on optical axis, CT5 are center thickness of the 5th lens E5 on optical axis；
TTL/ ∑ AT=4.54, wherein TTL be the first lens E1 object side S1 to imaging surface S13 on optical axis away from From ∑ AT is the summation of the first lens E1 spacing distance of two lens of arbitrary neighborhood on optical axis into the 5th lens E5；
DT11/DT51=1.48, wherein DT11 is the maximum effective radius of the object side S1 of the first lens E1, and DT51 is The maximum effective radius of the object side S9 of 5th lens E5；
(DT21+DT41)/ImgH=1.25, wherein DT21 is the maximum effective radius of the object side S3 of the second lens E2, DT41 is the maximum effective radius of the object side S7 of the 4th lens E4, and ImgH is effective pixel area diagonal line on imaging surface S13 Long half.
Fig. 2A shows chromatic curve on the axis of the optical imaging system of embodiment 1, indicates the light warp of different wave length Deviateed by the converging focal point after camera lens.Fig. 2 B shows the astigmatism curve of the optical imaging system of embodiment 1, indicates meridian picture Face bending and sagittal image surface bending.Fig. 2 C shows the distortion curve of the optical imaging system of embodiment 1, indicates different visual fields In the case of distortion sizes values.Fig. 2 D shows the ratio chromatism, curve of the optical imaging system of embodiment 1, indicates light warp By the deviation of the different image heights after camera lens on imaging surface.According to fig. 2 A to Fig. 2 D it is found that optics given by embodiment 1 at As system can be realized good image quality.
Embodiment 2
Referring to Fig. 3 to Fig. 4 D description according to the optical imaging system of the embodiment of the present application 2.In the present embodiment and following In embodiment, for brevity, by clipped description similar to Example 1.Fig. 3 is shown according to the embodiment of the present application 2 Optical imaging system structural schematic diagram.
As shown in figure 3, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, optical filter E6 and imaging surface S13.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is convex surface.Second lens E2 has Negative power, object side S3 are concave surface, and image side surface S4 is concave surface.The third lens E3 has negative power, and object side S5 is Convex surface, image side surface S6 are concave surface.4th lens E4 has positive light coke, and object side S7 is concave surface, and image side surface S8 is convex surface.The Five lens E5 have negative power, and object side S9 is concave surface, and image side surface S10 is plane at paraxial place.Optical filter E6 has object Side S11 and image side surface S12.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged on imaging surface S13.
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, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 4
In embodiment 2, the object side of any one lens of the first lens E1 into the 5th lens E5 and image side surface are It is aspherical.Table 5 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 2, wherein each aspherical face type can be by The formula (1) provided in above-described embodiment 1 limits.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -4.4844E-04 -7.0879E-04 3.1100E-04 -6.7831E-05 -2.5646E-05 2.3561E-05 -7.0819E-06 9.8286E-07 -5.2677E-08
S2 -5.4309E-03 1.8276E-02 -2.3834E-02 1.7991E-02 -8.2433E-03 2.2805E-03 -3.6734E-04 3.1177E-05 -1.0467E-06
S3 -6.2315E-03 2.4222E-02 -2.9793E-02 2.1843E-02 -1.0067E-02 2.8751E-03 -4.8988E-04 4.5384E-05 -1.7506E-06
S4 -1.2232E-02 3.8952E-02 -4.5191E-02 3.5593E-02 -2.0404E-02 8.0101E-03 -1.9978E-03 2.8353E-04 -1.7421E-05
S5 -3.0456E-02 5.5812E-02 -6.5064E-02 5.5227E-02 -3.4974E-02 1.5396E-02 -4.3381E-03 6.9787E-04 -4.8619E-05
S6 -1.9842E-02 3.0428E-02 -4.2242E-02 4.5841E-02 -3.7397E-02 2.0701E-02 -7.1114E-03 1.3446E-03 -1.0445E-04
S7 -7.3497E-03 1.6694E-02 -1.1608E-02 -1.3024E-02 3.1750E-02 -3.1671E-02 1.7284E-02 -5.0296E-03 6.1715E-04
S8 -1.1701E-02 1.7898E-02 -1.3374E-02 -6.1852E-03 2.0617E-02 -2.1459E-02 1.1740E-02 -3.3471E-03 3.9594E-04
S9 -7.8183E-02 4.0263E-02 -4.8455E-02 5.6042E-02 -5.0019E-02 2.9294E-02 -1.0544E-02 2.0852E-03 -1.6734E-04
S10 -4.6174E-02 2.3792E-02 -3.6019E-02 4.6072E-02 -3.9515E-02 2.1517E-02 -7.1738E-03 1.3383E-03 -1.0696E-04
Table 5
Table 6 gives half ImgH, the first lens of effective pixel area diagonal line length on imaging surface S13 in embodiment 2 Distance TTL, maximum angle of half field-of view HFOV, f-number Fno, optical imagery of the object side S1 to imaging surface S13 of E1 on optical axis Total effective focal length f of the system and effective focal length f1 to f5 of each lens.
ImgH(mm) 2.70 f1(mm) 5.06
TTL(mm) 12.69 f2(mm) -11.65
HFOV(°) 10.5 f3(mm) -14.59
Fno 3.47 f4(mm) 34.95
f(mm) 14.46 f5(mm) -14.10
Table 6
Fig. 4 A shows chromatic curve on the axis of the optical imaging system of embodiment 2, indicates the light warp of different wave length Deviateed by the converging focal point after camera lens.Fig. 4 B shows the astigmatism curve of the optical imaging system of embodiment 2, indicates meridian picture Face bending and sagittal image surface bending.Fig. 4 C shows the distortion curve of the optical imaging system of embodiment 2, indicates different visual fields In the case of distortion sizes values.Fig. 4 D shows the ratio chromatism, curve of the optical imaging system of embodiment 2, indicates light warp By the deviation of the different image heights after camera lens on imaging surface.According to Fig. 4 A to Fig. 4 D it is found that optics given by embodiment 2 at As system can be realized 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 basis The structural schematic diagram of the optical imaging system of the embodiment of the present application 3.
As shown in figure 5, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, optical filter E6 and imaging surface S13.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is convex surface.Second lens E2 has Negative power, object side S3 are concave surface, and image side surface S4 is concave surface.The third lens E3 has negative power, and object side S5 is Convex surface, image side surface S6 are concave surface.4th lens E4 has positive light coke, and object side S7 is concave surface, and image side surface S8 is convex surface.The Five lens E5 have negative power, and object side S9 is concave surface, and image side surface S10 is convex surface.Optical filter E6 have object side S11 and Image side surface S12.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged on imaging surface S13.
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, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 7
In embodiment 3, the object side of any one lens of the first lens E1 into the 5th lens E5 and image side surface are It is aspherical.Table 8 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 3, wherein each aspherical face type can be by The formula (1) provided in above-described embodiment 1 limits.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -1.3987E-03 8.4417E-04 -2.8331E-05 -2.3059E-04 1.4153E-04 -4.4902E-05 8.3826E-06 -8.7804E-07 3.9921E-08
S2 1.5663E-03 1.7106E-03 -3.8196E-03 2.3450E-03 -4.9076E-04 -4.8054E-05 3.8599E-05 -6.3025E-06 3.5671E-07
S3 1.1616E-02 -1.1636E-02 4.3596E-03 -1.5694E-04 -2.5812E-04 4.3164E-05 4.4731E-06 -1.6973E-06 1.2273E-07
S4 3.1745E-02 -5.0489E-02 4.7490E-02 -2.9899E-02 1.3457E-02 -4.2244E-03 8.6089E-04 -1.0149E-04 5.2621E-06
S5 1.4244E-02 -4.8253E-02 5.3282E-02 -3.8323E-02 1.8974E-02 -6.1993E-03 1.2418E-03 -1.3839E-04 6.8734E-06
S6 2.6885E-04 -1.3116E-02 1.8706E-02 -1.7213E-02 1.0591E-02 -4.0493E-03 9.1045E-04 -1.2300E-04 1.0213E-05
S7 2.9199E-03 -4.2288E-03 4.8854E-03 -7.7173E-03 6.8186E-03 -3.4402E-03 8.9803E-04 -9.6491E-05 1.9783E-06
S8 7.1449E-04 -2.3015E-03 2.4581E-03 -4.6948E-03 4.5010E-03 -2.5295E-03 7.6218E-04 -1.0480E-04 4.4943E-06
S9 -4.6860E-02 1.5979E-02 -1.0949E-02 2.1117E-03 4.3839E-03 -5.0659E-03 2.2990E-03 -4.6930E-04 3.3781E-05
S10 -1.0574E-02 -4.5786E-03 -6.2197E-04 4.2431E-03 -3.4428E-03 1.1347E-03 -1.0152E-04 -2.3368E-05 4.0989E-06
Table 8
Table 9 gives half ImgH, the first lens of effective pixel area diagonal line length on imaging surface S13 in embodiment 3 Distance TTL, maximum angle of half field-of view HFOV, f-number Fno, optical imagery of the object side S1 to imaging surface S13 of E1 on optical axis Total effective focal length f of the system and effective focal length f1 to f5 of each lens.
ImgH(mm) 2.70 f1(mm) 6.08
TTL(mm) 12.78 f2(mm) -9.99
HFOV(°) 10.4 f3(mm) -157.04
Fno 3.31 f4(mm) 23.28
f(mm) 14.47 f5(mm) -11.72
Table 9
Fig. 6 A shows chromatic curve on the axis of the optical imaging system of embodiment 3, indicates the light warp of different wave length Deviateed by the converging focal point after camera lens.Fig. 6 B shows the astigmatism curve of the optical imaging system of embodiment 3, indicates meridian picture Face bending and sagittal image surface bending.Fig. 6 C shows the distortion curve of the optical imaging system of embodiment 3, indicates different visual fields In the case of distortion sizes values.Fig. 6 D shows the ratio chromatism, curve of the optical imaging system of embodiment 3, indicates light warp By the deviation of the different image heights after camera lens on imaging surface.According to Fig. 6 A to Fig. 6 D it is found that optics given by embodiment 3 at As system can be realized 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 basis The structural schematic diagram of the optical imaging system of the embodiment of the present application 4.
As shown in fig. 7, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, optical filter E6 and imaging surface S13.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is convex surface.Second lens E2 has Negative power, object side S3 are concave surface, and image side surface S4 is concave surface.The third lens E3 has negative power, and object side S5 is Convex surface, image side surface S6 are concave surface.4th lens E4 has negative power, and object side S7 is concave surface, and image side surface S8 is convex surface.The Five lens E5 have negative power, and object side S9 is concave surface, and image side surface S10 is convex surface.Optical filter E6 have object side S11 and Image side surface S12.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged on imaging surface S13.
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, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 10
In embodiment 4, the object side of any one lens of the first lens E1 into the 5th lens E5 and image side surface are It is aspherical.Table 11 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 4, wherein each aspherical face type can It is limited by the formula (1) provided in above-described embodiment 1.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -1.1727E-03 1.6649E-06 6.9576E-05 -1.5404E-04 9.5037E-05 -2.8959E-05 4.6028E-06 -3.2753E-07 6.0604E-09
S2 -7.2358E-03 1.5173E-02 -1.5574E-02 8.6735E-03 -2.4602E-03 2.0536E-04 6.3610E-05 -1.6989E-05 1.1948E-06
S3 -2.5785E-03 1.3568E-02 -1.5269E-02 9.2865E-03 -3.0927E-03 4.7867E-04 1.0367E-06 -9.5621E-06 8.3234E-07
S4 5.0187E-03 1.0470E-03 -3.7842E-03 4.7837E-03 -3.3979E-03 1.4372E-03 -3.6728E-04 5.3434E-05 -3.4489E-06
S5 -6.6546E-03 1.3276E-03 -2.0408E-03 4.1043E-03 -3.7643E-03 1.8821E-03 -5.5042E-04 9.0470E-05 -6.5280E-06
S6 -9.2038E-03 6.9962E-04 -9.4711E-04 2.6783E-03 -3.6421E-03 2.4574E-03 -9.5863E-04 2.0839E-04 -1.9470E-05
S7 -9.7468E-03 -6.0960E-04 8.6054E-04 -3.0478E-03 3.6576E-03 -3.0873E-03 1.5830E-03 -4.5088E-04 5.5295E-05
S8 -8.8393E-03 2.3409E-03 -1.6545E-03 2.0013E-03 -2.3078E-03 1.6046E-03 -6.7251E-04 1.5572E-04 -1.5145E-05
S9 -9.6574E-02 7.4850E-02 -8.5955E-02 8.3668E-02 -6.0316E-02 2.9787E-02 -9.4524E-03 1.7247E-03 -1.3688E-04
S10 -2.6900E-02 4.2896E-03 -1.5529E-03 1.1428E-03 -8.3714E-04 3.9121E-04 -1.0952E-04 1.6814E-05 -1.0854E-06
Table 11
Table 12 gives half ImgH, the first lens of effective pixel area diagonal line length on imaging surface S13 in embodiment 4 Distance TTL, maximum angle of half field-of view HFOV, f-number Fno, optical imagery of the object side S1 to imaging surface S13 of E1 on optical axis Total effective focal length f of the system and effective focal length f1 to f5 of each lens.
Table 12
Fig. 8 A shows chromatic curve on the axis of the optical imaging system of embodiment 4, indicates the light warp of different wave length Deviateed by the converging focal point after camera lens.Fig. 8 B shows the astigmatism curve of the optical imaging system of embodiment 4, indicates meridian picture Face bending and sagittal image surface bending.Fig. 8 C shows the distortion curve of the optical imaging system of embodiment 4, indicates different visual fields In the case of distortion sizes values.Fig. 8 D shows the ratio chromatism, curve of the optical imaging system of embodiment 4, indicates light warp By the deviation of the different image heights after camera lens on imaging surface.According to Fig. 8 A to Fig. 8 D it is found that optics given by embodiment 4 at As system can be realized 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 basis The structural schematic diagram of the optical imaging system of the embodiment of the present application 5.
As shown in figure 9, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, optical filter E6 and imaging surface S13.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has Negative power, object side S3 are convex surface, and image side surface S4 is concave surface.The third lens E3 has negative power, and object side S5 is Convex surface, image side surface S6 are concave surface.4th lens E4 has positive light coke, and object side S7 is concave surface, and image side surface S8 is convex surface.The Five lens E5 have negative power, and object side S9 is concave surface, and image side surface S10 is convex surface.Optical filter E6 have object side S11 and Image side surface S12.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged on imaging surface S13.
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, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 13
In embodiment 5, the object side of any one lens of the first lens E1 into the 5th lens E5 and image side surface are It is aspherical.Table 14 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 5, wherein each aspherical face type can It is limited by the formula (1) provided in above-described embodiment 1.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -1.5049E-03 4.9177E-04 -7.6924E-05 -1.6264E-04 1.0720E-04 -2.7454E-05 2.6601E-06 5.9943E-08 -1.7996E-08
S2 -1.9893E-02 4.1835E-02 -4.3733E-02 2.6253E-02 -9.4458E-03 2.0425E-03 -2.5434E-04 1.6181E-05 -3.7408E-07
S3 -1.3956E-02 3.6471E-02 -4.0349E-02 2.5081E-02 -9.2476E-03 2.0268E-03 -2.5127E-04 1.5261E-05 -2.9167E-07
S4 1.3666E-02 -1.7081E-03 -6.7742E-03 8.4598E-03 -4.7603E-03 1.4368E-03 -2.3543E-04 1.9603E-05 -6.8833E-07
S5 -1.9624E-03 -1.5332E-03 -4.2415E-03 7.4132E-03 -4.8385E-03 1.5858E-03 -2.7745E-04 2.6456E-05 -1.3284E-06
S6 -8.2200E-03 6.2080E-04 -3.3270E-03 6.4443E-03 -5.8290E-03 2.7341E-03 -7.5038E-04 1.2414E-04 -1.0043E-05
S7 -1.2183E-02 -5.6606E-04 3.1217E-03 -7.9898E-03 9.9073E-03 -7.9416E-03 3.7736E-03 -9.7284E-04 1.0607E-04
S8 -7.7820E-03 -3.0561E-04 7.0527E-03 -1.1662E-02 1.0626E-02 -6.0241E-03 2.0455E-03 -3.7761E-04 2.9011E-05
S9 -9.1968E-02 7.2555E-02 -8.3297E-02 8.0468E-02 -5.8670E-02 2.9420E-02 -9.4935E-03 1.7591E-03 -1.4182E-04
S10 -2.9048E-02 4.6322E-03 -2.1435E-03 1.3191E-03 -9.9960E-04 4.9667E-04 -1.4810E-04 2.4036E-05 -1.6363E-06
Table 14
Table 15 gives half ImgH, the first lens of effective pixel area diagonal line length on imaging surface S13 in embodiment 5 Distance TTL, maximum angle of half field-of view HFOV, f-number Fno, optical imagery of the object side S1 to imaging surface S13 of E1 on optical axis Total effective focal length f of the system and effective focal length f1 to f5 of each lens.
Table 15
Figure 10 A shows chromatic curve on the axis of the optical imaging system of embodiment 5, indicates the light warp of different wave length Deviateed by the converging focal point after camera lens.Figure 10 B shows the astigmatism curve of the optical imaging system of embodiment 5, indicates meridian Curvature of the image and sagittal image surface bending.Figure 10 C shows the distortion curve of the optical imaging system of embodiment 5, indicates different Distortion sizes values in the case of visual field.Figure 10 D shows the ratio chromatism, curve of the optical imaging system of embodiment 5, indicates Light via the different image heights after camera lens on imaging surface deviation.According to Figure 10 A to Figure 10 D it is found that given by embodiment 5 Optical imaging system can be realized 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 root According to the structural schematic diagram of the optical imaging system of the embodiment of the present application 6.
As shown in figure 11, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, optical filter E6 and imaging surface S13.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is convex surface.Second lens E2 has Negative power, object side S3 are concave surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is Convex surface, image side surface S6 are concave surface.4th lens E4 has positive light coke, and object side S7 is concave surface, and image side surface S8 is convex surface.The Five lens E5 have negative power, and object side S9 is concave surface, and image side surface S10 is convex surface.Optical filter E6 have object side S11 and Image side surface S12.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged on imaging surface S13.
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, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 16
In embodiment 6, the object side of any one lens of the first lens E1 into the 5th lens E5 and image side surface are It is aspherical.Table 17 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 6, wherein each aspherical face type can It is limited by the formula (1) provided in above-described embodiment 1.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -1.1551E-03 -1.6849E-04 3.2962E-04 -3.9592E-04 2.2298E-04 -7.1284E-05 1.3326E-05 -1.3736E-06 6.1844E-08
S2 -5.0704E-03 1.0457E-02 -6.8037E-03 4.3499E-04 1.7122E-03 -9.7490E-04 2.4165E-04 -2.8900E-05 1.3490E-06
S3 -4.7998E-03 1.3744E-02 -1.1575E-02 4.4601E-03 -3.1712E-04 -3.5630E-04 1.2935E-04 -1.7642E-05 8.6082E-07
S4 4.8630E-03 6.3294E-03 -9.2550E-03 7.0177E-03 -3.3296E-03 1.0150E-03 -1.9971E-04 2.4368E-05 -1.4673E-06
S5 -9.6696E-03 8.0194E-03 -1.0065E-02 9.2182E-03 -5.6600E-03 2.3366E-03 -6.3438E-04 1.0425E-04 -7.8707E-06
S6 -1.1051E-02 3.3610E-03 -5.0547E-03 5.5473E-03 -4.5309E-03 2.4963E-03 -8.8659E-04 1.8629E-04 -1.7513E-05
S7 -7.3188E-03 -2.1189E-03 -2.0636E-03 2.2756E-03 -3.1079E-03 2.7076E-03 -1.4479E-03 4.3450E-04 -5.4548E-05
S8 -3.6250E-03 -1.7364E-03 4.3237E-05 -1.3014E-03 1.4179E-03 -8.6694E-04 3.1785E-04 -6.0950E-05 4.6148E-06
S9 -1.0015E-01 9.0244E-02 -1.1241E-01 1.1519E-01 -8.7845E-02 4.6211E-02 -1.5682E-02 3.0787E-03 -2.6453E-04
S10 -2.7387E-02 6.0197E-03 -3.2601E-03 2.4226E-03 -1.7333E-03 8.8826E-04 -2.8672E-04 5.2747E-05 -4.2036E-06
Table 17
Table 18 gives half ImgH, the first lens of effective pixel area diagonal line length on imaging surface S13 in embodiment 6 Distance TTL, maximum angle of half field-of view HFOV, f-number Fno, optical imagery of the object side S1 to imaging surface S13 of E1 on optical axis Total effective focal length f of the system and effective focal length f1 to f5 of each lens.
ImgH(mm) 2.70 f1(mm) 5.90
TTL(mm) 12.59 f2(mm) -13.71
HFOV(°) 11.0 f3(mm) -100.36
Fno 3.31 f4(mm) 64.80
f(mm) 13.77 f5(mm) -10.96
Table 18
Figure 12 A shows chromatic curve on the axis of the optical imaging system of embodiment 6, indicates the light warp of different wave length Deviateed by the converging focal point after camera lens.Figure 12 B shows the astigmatism curve of the optical imaging system of embodiment 6, indicates meridian Curvature of the image and sagittal image surface bending.Figure 12 C shows the distortion curve of the optical imaging system of embodiment 6, indicates different Distortion sizes values in the case of visual field.Figure 12 D shows the ratio chromatism, curve of the optical imaging system of embodiment 6, indicates Light via the different image heights after camera lens on imaging surface deviation.According to Figure 12 A to Figure 12 D it is found that given by embodiment 6 Optical imaging system can be realized 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 root According to the structural schematic diagram of the optical imaging system of the embodiment of the present application 7.
As shown in figure 13, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, optical filter E6 and imaging surface S13.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is convex surface.Second lens E2 has Negative power, object side S3 are concave surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is Concave surface, image side surface S6 are concave surface.4th lens E4 has negative power, and object side S7 is concave surface, and image side surface S8 is convex surface.The Five lens E5 have negative power, and object side S9 is concave surface, and image side surface S10 is concave surface.Optical filter E6 have object side S11 and Image side surface S12.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged on imaging surface S13.
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, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 19
In embodiment 7, the object side of any one lens of the first lens E1 into the 5th lens E5 and image side surface are It is aspherical.Table 20 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 7, wherein each aspherical face type can It is limited by the formula (1) provided in above-described embodiment 1.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -1.1830E-03 -8.6345E-07 4.8061E-05 -1.2626E-04 7.7479E-05 -2.4747E-05 4.6165E-06 -4.9118E-07 2.4407E-08
S2 -4.1134E-03 1.0288E-02 -8.6813E-03 3.3753E-03 -4.2721E-04 -1.1747E-04 4.7685E-05 -5.6321E-06 1.9604E-07
S3 -3.8938E-03 1.2288E-02 -1.1420E-02 5.7827E-03 -1.7033E-03 2.9512E-04 -3.3322E-05 3.3910E-06 -2.5002E-07
S4 7.0964E-03 2.7590E-03 -5.6080E-03 4.4151E-03 -2.1082E-03 6.4264E-04 -1.2779E-04 1.6366E-05 -1.0644E-06
S5 -5.0845E-03 3.3622E-03 -5.8415E-03 5.4696E-03 -3.1897E-03 1.2061E-03 -2.9641E-04 4.5243E-05 -3.3005E-06
S6 -1.0576E-02 9.5479E-04 -2.0272E-03 1.6873E-03 -8.2101E-04 1.3121E-04 5.7444E-05 -2.7885E-05 3.4807E-06
S7 -5.6928E-03 -2.4629E-03 -5.6404E-04 -6.1055E-04 8.5037E-04 -6.3174E-04 2.5316E-04 -4.6334E-05 2.9479E-06
S8 -4.8815E-03 -4.1028E-04 -2.8444E-04 -7.0042E-04 8.6816E-04 -5.8258E-04 2.3501E-04 -5.1064E-05 4.6406E-06
S9 -7.6550E-02 4.5210E-02 -4.2155E-02 3.5655E-02 -2.3366E-02 1.0744E-02 -3.2130E-03 5.5923E-04 -4.2756E-05
S10 -3.2469E-02 8.0898E-03 -2.6065E-03 8.9880E-04 -2.7426E-04 5.7264E-05 -4.6136E-06 -5.0336E-07 9.4500E-08
Table 20
Table 21 gives half ImgH, the first lens of effective pixel area diagonal line length on imaging surface S13 in embodiment 7 Distance TTL, maximum angle of half field-of view HFOV, f-number Fno, optical imagery of the object side S1 to imaging surface S13 of E1 on optical axis Total effective focal length f of the system and effective focal length f1 to f5 of each lens.
ImgH(mm) 2.70 f1(mm) 5.65
TTL(mm) 12.51 f2(mm) -17.18
HFOV(°) 11.4 f3(mm) -94.78
Fno 3.18 f4(mm) -527.57
f(mm) 13.22 f5(mm) -10.25
Table 21
Figure 14 A shows chromatic curve on the axis of the optical imaging system of embodiment 7, indicates the light warp of different wave length Deviateed by the converging focal point after camera lens.Figure 14 B shows the astigmatism curve of the optical imaging system of embodiment 7, indicates meridian Curvature of the image and sagittal image surface bending.Figure 14 C shows the distortion curve of the optical imaging system of embodiment 7, indicates different Distortion sizes values in the case of visual field.Figure 14 D shows the ratio chromatism, curve of the optical imaging system of embodiment 7, indicates Light via the different image heights after camera lens on imaging surface deviation.According to Figure 14 A to Figure 14 D it is found that given by embodiment 7 Optical imaging system can be realized good image quality.
To sum up, embodiment 1 to embodiment 7 meets relationship shown in table 22 respectively.
Conditional/embodiment 1 2 3 4 5 6 7
TTL/f 0.88 0.88 0.88 0.93 0.93 0.91 0.95
DT11/DT51 1.48 1.47 1.44 1.28 1.26 1.39 1.36
f/ImgH 5.36 5.36 5.36 5.09 5.15 5.10 4.90
(V2+V3+V4)/3 33.34 33.34 33.34 33.34 33.34 33.34 33.34
(CT1+CT2)/f1 0.43 0.48 0.35 0.39 0.34 0.40 0.45
f2/f3 0.43 0.80 0.06 0.15 0.13 0.14 0.18
R1/R6 0.61 0.62 1.10 0.61 0.74 0.60 0.04
R9/f5 0.55 0.55 0.47 0.33 0.25 0.46 0.63
TTL/∑AT 4.54 4.48 4.40 4.62 4.83 4.18 4.19
CT5/(CT3+CT4) 0.27 0.29 0.35 0.39 0.29 0.22 0.26
(DT21+DT41)/ImgH 1.25 1.25 1.32 1.22 1.21 1.25 1.25
T12*T45(mm2) 0.04 0.04 0.07 0.06 0.06 0.15 0.13
Table 22
The application also provides a kind of imaging device, and electronics photosensitive element can be photosensitive coupling element (CCD) or complementation Property matal-oxide semiconductor element (CMOS).Imaging device can be the independent imaging equipment of such as digital camera, be also possible to The image-forming module being integrated on the mobile electronic devices such as mobile phone.The imaging device is equipped with optical imagery system described above System.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein Can technical characteristic replaced mutually and the technical solution that is formed.

Claims (10)

  1. It by object side to image side sequentially include: the first lens, the second lens, the third lens, along optical axis 1. optical imaging system Four lens and the 5th lens, which is characterized in that
    First lens have positive light coke, and object side is convex surface；
    Second lens have negative power；
    The third lens have negative power, and image side surface is concave surface；
    4th lens have positive light coke or negative power；
    5th lens have negative power, and object side is concave surface；
    The object side of first lens to the optical imaging system distance TTL of the imaging surface on the optical axis, described Effective pixel area diagonal line length on total effective focal length f of optical imaging system and the imaging surface of the optical imaging system Half ImgH is satisfied the following conditional expression:
    TTL/f≤0.95；And
    F/ImgH > 4.5.
  2. 2. optical imaging system according to claim 1, which is characterized in that the curvature of the object side of the 5th lens half The effective focal length f5 of diameter R9 and the 5th lens meets 0 < R9/f5 < 1.
  3. 3. optical imaging system according to claim 1, which is characterized in that the effective focal length f2 of second lens and institute The effective focal length f3 for stating the third lens meets 0 < f2/f3 < 1.
  4. 4. optical imaging system according to claim 1, which is characterized in that the curvature of the object side of first lens half The radius of curvature R 6 of diameter R1 and the image side surface of the third lens meets 0 < R1/R6 < 1.4.
  5. 5. optical imaging system according to claim 1, which is characterized in that first lens on the optical axis in The effective focal length f1 of the center thickness CT2 and first lens of heart thickness CT1, second lens on the optical axis are full 0 < of foot (CT1+CT2)/f1 < 0.7.
  6. 6. optical imaging system according to claim 1, which is characterized in that the abbe number V2 of second lens, institute The abbe number V4 of the abbe number V3 and the 4th lens that state the third lens meet 30 < (V2+V3+V4)/3 < 40.
  7. 7. optical imaging system according to claim 1, which is characterized in that first lens and second lens exist Spacing distance T12 and the spacing distance T45 of the 4th lens and the 5th lens on the optical axis on the optical axis Meet 0 < T12*T45 < 0.2mm2。
  8. 8. optical imaging system according to claim 1, which is characterized in that the third lens on the optical axis in The center thickness CT4 and the 5th lens of heart thickness CT3, the 4th lens on the optical axis are on the optical axis Center thickness CT5 meets 0 < CT5/ (CT3+CT4) < 0.5.
  9. 9. optical imaging system according to any one of claim 1 to 8, which is characterized in that the object of second lens The maximum effective radius DT21 of side, the object side of the 4th lens maximum effective radius DT41 and the optical imagery The half ImgH of effective pixel area diagonal line length meets 1 < (DT21+DT41)/ImgH < 1.5 on the imaging surface of system.
  10. 10. optical imaging system, along optical axis by object side to image side sequentially include: the first lens, the second lens, the third lens, 4th lens and the 5th lens, which is characterized in that
    First lens have positive light coke, and object side is convex surface；
    Second lens have negative power；
    The third lens have negative power, and image side surface is concave surface；
    4th lens have positive light coke or negative power；
    5th lens have negative power, and object side is concave surface；And
    The object side of first lens to the optical imaging system distance TTL of the imaging surface on the optical axis with it is described The summation ∑ AT of the first lens spacing distance of two lens of arbitrary neighborhood on the optical axis into the 5th lens meets 4 < TTL/ ∑ AT < 5.
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