CN107121756A

CN107121756A - Optical imaging system

Info

Publication number: CN107121756A
Application number: CN201710506294.9A
Authority: CN
Inventors: 张凯元; 贾远林
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2017-06-28
Filing date: 2017-06-28
Publication date: 2017-09-01
Anticipated expiration: 2037-06-28
Also published as: CN107121756B

Abstract

This application discloses a kind of optical imaging system, the optical imaging system is sequentially included along optical axis by thing side to image side：First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens.Wherein, the first lens and the 4th lens can have negative power；Second lens and the 6th lens can have positive light coke or negative power；The effective focal length f3 of 3rd lens and the effective focal length f5 of the 5th lens can meet 0 ＜ f3/f5 ＜ 0.8.

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 wide-angle including six-element lens Imaging system.

Background technology

Current optical imaging system is except needing to have higher resolution ratio, and the scope to its angle of visual field it is also proposed more High requirement.Because the optical imaging system of the big angle of visual field can include more object space information in imaging, therefore with big The imaging lens of visual field turn into a kind of trend.

Simultaneously as portable type electronic product is growing, the miniaturization, lightweight to camera lens, which are proposed, accordingly will Ask.Accordingly, it would be desirable to which camera lens is in the case where meeting miniaturization and light-weighted precondition, with ultra-wide angle, high-resolution and height The performances such as image quality.

The content of the invention

This application provides be applicable to portable type electronic product, can at least solve or part solve it is of the prior art The optical imaging system of at least one above-mentioned shortcoming.

The one side of the application provide such a optical imaging system, its along optical axis by thing side to image side sequentially Including：First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens.First lens and the 4th saturating Mirror can have negative power；Second lens and the 6th lens can have positive light coke or negative power；3rd lens have The effective focal length f5 of effect focal length f3 and the 5th lens can meet 0 ＜ f3/f5 ＜ 0.8.

Further aspect of the application provide such a optical imaging system, its have total effective focal length f and along Optical axis is sequentially included by thing side to image side：First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th are saturating Mirror.First lens can have negative power；Second lens and the 6th lens can have positive light coke or negative power；3rd is saturating The combination focal power of mirror, the 4th lens and the 5th lens can be positive light coke, wherein, the 3rd lens, the 4th lens and the 5th are saturating At least one in mirror can have negative power, and the combination focal power f345 of the 3rd lens, the 4th lens and the 5th lens can expire 0.5 ＜ f/f345 ＜ 0.9 of foot.

Further aspect of the application additionally provides such a optical imaging system, and it is along optical axis by thing side to image side Sequentially include the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens with focal power.The One lens and the 4th lens can have negative power；3rd lens and the 5th lens can have positive light coke；Second lens Can have a positive light coke with least one in the 6th lens, and the 6th lens rise of the thing side at maximum radius SAG61 can be met with the 6th lens in the center thickness CT6 on optical axis | SAG61 |/CT6 ＜ 1.

In one embodiment, the combination focal power of the 3rd lens, the 4th lens and the 5th lens can be positive light coke.

In one embodiment, the 3rd lens and the 5th lens are respectively provided with positive light coke.

In one embodiment, the 4th lens can have negative power.

In one embodiment, the maximum angle of half field-of view HFOV of optical imaging system can meet Tan (HFOV/2) >= 0.9。

In one embodiment, the effective focal length f3 of the 3rd lens and the effective focal length f5 of the 5th lens can meet 0 ＜ F3/f5 ＜ 0.8.

In one embodiment, the total effective focal length f and the 3rd lens, the 4th lens and the 5th of optical imaging system are saturating The combined focal length f345 of mirror can meet 0.5 ＜ f/f345 ＜ 0.9.

In one embodiment, the total effective focal length f and the second lens of optical imaging system effective focal length f2 can expire Sufficient f/f2≤0.2.

In one embodiment, the total effective focal length f and the 4th lens of optical imaging system effective focal length f4 can expire - 1.5 ＜ f/f4 ＜ -0.5 of foot.

In one embodiment, the effective focal length f1 and the 6th lens of the first lens effective focal length f6 can be met | f1/ F6 | ＜ 0.5.

In one embodiment, edge thickness ET6 and sixth lens of the 6th lens at maximum radius are on optical axis Center thickness CT6 can meet 1 ＜ ET6/CT6 ＜ 2.

In one embodiment, thing rise SAG61 of the side at maximum radius and the 6th lens of the 6th lens in Center thickness CT6 on optical axis can be met | SAG61 |/CT6 ＜ 1.

In one embodiment, the 6th lens in the center thickness CT6 and the first lens on optical axis on optical axis Heart thickness CT1 can meet 0.5 ＜ CT6/CT1 ＜ 1.0.

In one embodiment, the 5th lens and the 6th lens in the airspace T56 and the first lens on optical axis extremely The summation Σ AT of spacing distance of the lens of arbitrary neighborhood two on optical axis can meet 0.1 ＜ T56/ ∑ AT ＜ 0.5 in 6th lens.

In one embodiment, the curvature of the thing side of total effective focal length f of optical imaging system and the second lens half Footpath R3 can meet f/ | R3 | ＜ 0.3.

In one embodiment, the radius of curvature of the lens image side surface of radius of curvature R 7 and the 4th of the 4th lens thing side R8 can meet -5.0 ＜ R7/R8 ＜ 0.

In one embodiment, the total effective focal length f and the Entry pupil diameters EPD of optical imaging system of optical imaging system F/EPD≤2.2 can be met.

The application employs multi-disc (for example, six) lens, by each power of lens of reasonable distribution, face type, each Spacing etc. on axle between the center thickness of mirror and each lens, can make optical imaging system have at least one following advantage：

Effectively expand the angle of visual field of imaging system；

Shorten imaging system total length；

Correct all kinds of aberrations；And

Improve the resolution ratio and image quality of camera lens.

Brief description of the drawings

With reference to accompanying 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 representation 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 axle of the optical imaging system of embodiment 1, astigmatism curve, multiplying power Chromatic curve and relative illumination curve；

Fig. 3 shows the structural representation of the optical imaging system according to the embodiment of the present application 2；

Fig. 4 A to Fig. 4 D respectively illustrate chromatic curve on the axle of the optical imaging system of embodiment 2, astigmatism curve, multiplying power Chromatic curve and relative illumination curve；

Fig. 5 shows the structural representation of the optical imaging system according to the embodiment of the present application 3；

Fig. 6 A to Fig. 6 D respectively illustrate chromatic curve on the axle of the optical imaging system of embodiment 3, astigmatism curve, multiplying power Chromatic curve and relative illumination curve；

Fig. 7 shows the structural representation of the optical imaging system according to the embodiment of the present application 4；

Fig. 8 A to Fig. 8 D respectively illustrate chromatic curve on the axle of the optical imaging system of embodiment 4, astigmatism curve, multiplying power Chromatic curve and relative illumination curve；

Fig. 9 shows the structural representation of the optical imaging system according to the embodiment of the present application 5；

Figure 10 A to Figure 10 D respectively illustrate chromatic curve on the axle of the optical imaging system of embodiment 5, astigmatism curve, times Rate chromatic curve and relative illumination curve；

Figure 11 shows the structural representation of the optical imaging system according to the embodiment of the present application 6；

Figure 12 A to Figure 12 D respectively illustrate chromatic curve on the axle of the optical imaging system of embodiment 6, astigmatism curve, times Rate chromatic curve and relative illumination curve；

Figure 13 shows the structural representation of the optical imaging system according to the embodiment of the present application 7；

Figure 14 A to Figure 14 D respectively illustrate chromatic curve on the axle of the optical imaging system of embodiment 7, astigmatism curve, times Rate chromatic curve and relative illumination curve；

Figure 15 shows the structural representation of the optical imaging system according to the embodiment of the present application 8；

Figure 16 A to Figure 16 D respectively illustrate chromatic curve on the axle of the optical imaging system of embodiment 8, astigmatism curve, times Rate chromatic curve and relative illumination curve.

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, third, etc. is only used for a feature and another spy Levy and make a distinction, and do not indicate that any limitation to feature.Therefore, in the case of without departing substantially from teachings of the present application, hereinafter The first lens discussed are also known as the second lens or the 3rd lens.

In the accompanying drawings, for convenience of description, thickness, the size and dimension of lens are somewhat exaggerated.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.

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 putting, 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.It is referred to as thing side near the surface of object in each lens, It is referred to as image side surface near the surface of imaging surface in each lens.

It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory Represent there is stated feature, element and/or part when being used in bright book, but do not preclude the presence or addition of one or more Further feature, element, part and/or combinations thereof.In addition, ought the statement of such as " ... at least one " appear in institute When after the list of row feature, the whole listed feature of modification, rather than the individual component in modification list.In addition, working as description originally During the embodiment of application, represented " one or more embodiments of the application " using "available".Also, term " exemplary " It is intended to refer to example or illustration.

Unless otherwise defined, otherwise all terms (including technical terms and scientific words) used herein be respectively provided with The 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.

It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

The feature of the application, principle and other aspects are described in detail below.

Such as six lens with focal power are included according to the optical imaging system of the application illustrative embodiments, i.e., First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens.This six lens are along optical axis from thing Side to image side sequential.It may also include according to the optical imaging system of the application illustrative embodiments and be arranged at imaging surface Electronics photo-sensitive cell.

First lens can have negative power；Second lens can have positive light coke or negative power；3rd lens can have There is positive light coke；4th lens can have negative power；5th lens can have positive light coke；And the 6th lens can have just Focal power or negative power.

The maximum angle of half field-of view HFOV of optical imaging system meets Tan (HFOV/2) >=0.9, more specifically, HFOV enters one Step can meet 0.99≤Tan (HFOV/2)≤1.00.The restriction with the angle of visual field is distributed by rational focal power so that system exists On the premise of ensureing excellent image quality, the larger angle of visual field is obtained.

0 ＜ f3/f5 ＜ 0.8 are met between the effective focal length f3 of 3rd lens and the effective focal length f5 of the 5th lens, more Body, f3 and f5 can further meet 0.36≤f3/f5≤0.63.By entering to the 3rd lens and the 5th power of lens The restriction of row zone of reasonableness, the ability for enabling to system that there is good balance astigmatism.

The total effective focal length f and the combined focal length f345 of the 3rd lens, the 4th lens and the 5th lens of optical imaging system Between can meet 0.5 ＜ f/f345 ＜ 0.9, more specifically, f and f345 can further meet 0.58≤f/f345≤0.78.It is logical Cross and the combination focal power of the 3rd lens, the 4th lens and the 5th lens is defined in rational scope so that this three lens Rational focal power can be undertaken, and meets the demand of imaging viewing field.

F/f2≤0.2 can be met between total effective focal length f of optical imaging system and the effective focal length f2 of the second lens, more Specifically, f and f2 can further meet 0.07≤f/f2≤0.15.By the numerical value model for the effective focal length f2 for constraining the second lens Enclose so that the second lens have rational balance spherical aberration and the ability of coma, so as to the imaging matter of effectively lifting system Amount.

- 1.5 ＜ f/f4 can be met between total effective focal length f of optical imaging system and the effective focal length f4 of the 4th lens ＜ -0.5, more specifically, f and f4 can further meet -1.36≤f/f4≤- 0.83.By the negative light focus for limiting the 4th lens The scope of degree so that the 4th lens produce the positive spherical aberration that can be used to balance system spherical aberration, so that system has well Image quality.

Can be met between the effective focal length f1 of first lens and the effective focal length f6 of the 6th lens | f1/f6 | ＜ 0.5, more Body, f1 and f6 can further meet 0.03≤| f1/f6 |≤0.40.By limiting the first lens and the 6th power of lens Scope, enables to the first lens and the 6th lens to have rational distortion range.

Edge thickness ET6 and sixth lens of 6th lens at maximum radius are between the center thickness CT6 on optical axis 1 ＜ ET6/CT6 ＜ 2 can be met, more specifically, ET6 and CT6 can further meet 1.16≤ET6/CT6≤1.67.By limiting The edge thickness of 6th lens and the scope of center thickness so that the 6th lens have good processability.

Rise SAG61 and sixth lens of the thing side of 6th lens at maximum radius are in the center thickness on optical axis Can be met between CT6 | SAG61 |/CT6 ＜ 1, more specifically, SAG61 and CT6 can further meet 0.02≤| SAG61 |/CT6 ≤0.74.By limiting the maximum rise of the 6th lens, enable to the 6th lens that there is good processability, reduce processing and miss Difference.

6th lens can expire in the center thickness CT6 and the first lens on optical axis between the center thickness CT1 on optical axis 0.5 ＜ CT6/CT1 ＜ 1.0 of foot, more specifically, CT6 and CT1 can further meet 0.55≤CT6/CT1≤0.85.By limiting The scope of the center thickness of 6th lens and the first lens, to control the 6th lens and the first lens big in the distortion of different directions It is small, so that the distortion of the big visual field system is distributed in rational scope.

5th lens and the 6th the lens arbitrary neighborhood into the 6th lens in the airspace T56 and the first lens on optical axis 0.1 ＜ T56/ ∑ AT ＜ 0.5 can be met between the summation Σ AT of spacing distance of two lens on optical axis, more specifically, T56 and ∑ AT can further meet 0.13≤T56/ ∑s AT≤0.31.By to the spacing distance between the 5th lens and the 6th lens Limit, can regulating system astigmatism amount, the astigmatism amount of system is controlled in rational scope so that system have it is good Good image quality and excellent resolving power.

F/ can be met between the radius of curvature R 3 of total effective focal length f of optical imaging system and the thing side of the second lens | R3 | ＜ 0.3, more specifically, f and R3 can further meet 0.11≤f/ | and R3 |≤0.21.By controlling the second lens thing side Radius of curvature (when aperture arrangement is between the second lens and the 3rd lens, the radius of curvature of the second lens thing side is The curvature of lens near aperture diaphragm position), can reasonably adjust the spherical aberration with control system so that the optics into As system axle on and axle on nearby obtain good image quality in visual field.

- 5.0 can be met between the radius of curvature R 8 of the lens image side surface of radius of curvature R 7 and the 4th of 4th lens thing side ＜ R7/R8 ＜ 0, more specifically, R7 and R8 can further meet -3.54≤R7/R8≤- 0.85.It is the 4th saturating by rationally controlling The scope of the radius of curvature of mirror thing side and image side surface is that is, big to the bending direction and bending of the 4th lens thing side and image side surface Ability that is small rationally to be controlled, enabling to the 4th lens that there is good balancing axial aberration, so that optical imagery System obtains good image quality in certain imaging band bandwidth range.

Can be met between total effective focal length f of optical imaging system and the Entry pupil diameters EPD of optical imaging system f/EPD≤ 2.2, more specifically, f and EPD can further meet 1.8≤f/EPD≤2.2.By controlling total effective focal length f and Entry pupil diameters EPD ratio (that is, the F numbers of system) so that system can obtain good image quality under subdued light conditions.In addition, in foot On the premise of enough design freedoms, rational F numbers are limited, are capable of the biography letter design load of rational lifting system, so that Optical system ensures to obtain good image quality in design.

In the exemplary embodiment, the light of confine optical beam can be provided between such as the second lens and the 3rd lens Door screen, with the image quality of improving optical imaging system.Alternatively, the diaphragm can be aperture diaphragm.

Alternatively, above-mentioned optical imaging system may also include optical filter for correcting color error ratio and/or for protecting The protective glass of photo-sensitive cell on imaging surface.

In order to meet miniaturization and light-weighted requirement, each lens in above-mentioned optical imaging system can use plastics Eyeglass.

In addition, as it is known to the person skilled in the art, non-spherical lens has more preferably radius of curvature characteristic, with improvement Distort aberration and improve the advantage of astigmatic image error.In presently filed embodiment, non-spherical lens can be used, with as much as possible The aberration occurred when imaging is eliminated, so that the further image quality of improving optical imaging system.Non-spherical lens Use, not only can significantly improve as matter, reduce aberration, the number of lenses of camera lens can also be reduced, reduce volume.

Those skilled in the art be also understood that without departing from this application claims technical scheme in the case of, The lens numbers for constituting optical imaging system can be changed, to obtain each result and the advantage described in this specification.Though for example, So it is described in embodiments by taking six lens as an example, but the optical imaging system is not limited to include six lens. If desired, 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 is shown according to this Apply for the structural representation of the optical imaging system of embodiment 1.

As shown in figure 1, optical imaging system along optical axis from thing side to sequentially including the first lens E1 into image side, it is second saturating Mirror E2, the 3rd lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6 and imaging surface S15.

First lens E1 has negative power, and its thing side S1 is convex surface, and image side surface S2 is concave surface, and the first lens E1 Thing side S1 and image side surface S2 be sphere.

Second lens E2 has positive light coke, and its thing side S3 is concave surface, and image side surface S4 is convex surface, and the second lens E2 Thing side S3 and image side surface S4 be aspherical.

3rd lens E3 has positive light coke, and its thing side S5 is convex surface, and image side surface S6 is convex surface, and the 3rd lens E3 Thing side S5 and image side surface S6 be aspherical.

4th lens E4 has negative power, and its thing side S7 is concave surface, and image side surface S8 is concave surface, and the 4th lens E4 Thing side S7 and image side surface S8 be aspherical.

5th lens E5 has positive light coke, and its thing side S9 is convex surface, and image side surface S10 is convex surface, and the 5th lens E5 thing side S9 and image side surface S10 is aspherical.

6th lens E6 has positive light coke, and its thing side S11 is convex surface, and image side surface S12 is concave surface, and the 6th lens E6 thing side S11 and image side surface S12 is aspherical.

Alternatively, optical imaging system may also include the optical filter E7 with thing side S13 and image side surface S14.From thing The light of body sequentially through each surface S1 to S14 and is ultimately imaged on imaging surface S15.

In the optical imaging system of the present embodiment, it can also be used being set for example between the second lens E2 and the 3rd lens E3 In the diaphragm STO of confine optical beam, with the image quality of improving optical imaging system.

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, the unit of radius of curvature and thickness is millimeter (mm).

Table 1

As shown in Table 1, the image side surface S8 of the 4th lens E4 thing side S7 lens of radius of curvature R 7 and the 4th radius of curvature R7/R8=-2.03 is met between R8；6th lens E6 is thick in the center on optical axis in the center thickness CT6 on optical axis and the first lens E1 CT6/CT1=0.60 is met between degree CT1；The spacing distance T56 and the first lens E1 of 5th lens E5 and the 6th lens E6 on optical axis Into the 6th lens E6 T56/ Σ AT=0.29 are met between the summation Σ AT of spacing distance of the lens of arbitrary neighborhood two on optical axis.

The present embodiment employs six-element lens as an example, by the focal length of each lens of reasonable distribution, the face type of each lens, each Spacing distance between the center thickness of lens and each lens, while imaging system miniaturization is ensured, is expanded into as system The angle of visual field of system, the image quality for improving the resolution ratio of imaging system and lifting imaging system.In the present embodiment, it is 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 is given available for each aspheric in embodiment 1 Face minute surface S3-S12 high order term coefficient A₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈And A₂₀。

Table 2

Table 3 as shown below provide in the optical imaging system of embodiment 1 the effective focal length f1 to f6 of each lens, optics into As total effective focal length f of system and the optics total length TTL of optical imaging system are (that is, from the first lens E1 thing side S1 To distances of the imaging surface S15 on optical axis).

Parameter	f1(mm)	f2(mm)	f3(mm)	f4(mm)	f5(mm)	f6(mm)
							Numerical value	-1.56	7.43	1.09	-1.17	2.48	7.44
Parameter	f(mm)	TTL(mm)
							Numerical value	1.13	5.00

Table 3

Can be obtained, be met between the first lens E1 effective focal length f1 and the 6th lens E6 effective focal length f6 by table 3 | f1/ F6 |=0.21；F3/f5=0.44 is met between 3rd lens E3 effective focal length f3 and the 5th lens E5 effective focal length f5； F/f2=0.15 is met between the total effective focal length f and the second lens E2 of optical imaging system effective focal length f2；Optical imagery F/f4=-0.97 is met between the total effective focal length f and the 4th lens E4 of system effective focal length f4.Can with reference to table 1 and table 3 , meet f/ between the radius of curvature R 3 of the total effective focal length f and the second lens E2 of optical imaging system thing side | R3 |= 0.14。

In the present embodiment, the maximum angle of half field-of view HFOV of optical imaging system meets Tan (HFOV/2)=0.99；Optics It is full between the total effective focal length f and the 3rd lens E3, the 4th lens E4 and the 5th lens E5 combination focal power f345 of imaging system Sufficient f/f345=0.64；Edge thickness ET6s and sixth lens E6 of the 6th lens E6 at maximum radius are in the center on optical axis ET6/CT6=1.18 is met between thickness CT6；Rise SAG61s and of the 6th lens E6 thing side S11 at maximum radius Six lens E6 are met between the center thickness CT6 on optical axis | SAG61 |/CT6=0.74；Total effective Jiao of optical imaging system Away from meeting f/EPD=2.1 between f and the Entry pupil diameters EPD of optical imaging system.

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 system.Fig. 2 B show the astigmatism curve of the optical imaging system of embodiment 1, and it represents son Noon curvature of the image and sagittal image surface bending.Fig. 2 C show the ratio chromatism, curve of the optical imaging system of embodiment 1, and it is represented Light via the different image heights after optical imaging system on imaging surface deviation.Fig. 2 D show the optics of embodiment 1 into As the relative illumination curve of system, it represents the relative illumination corresponding to different image heights on imaging surface.Can according to Fig. 2A to Fig. 2 D Know, the optical imaging system given by embodiment 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.The present embodiment and with In lower embodiment, for brevity, by clipped description similar to Example 1.Fig. 3 is shown according to the embodiment of the present application The structural representation of 2 optical imaging system.

As shown in figure 3, optical imaging system along optical axis from thing side to sequentially including the first lens E1 into image side, it is second saturating Mirror E2, the 3rd lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6 and imaging surface S15.

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, the unit of radius of curvature and thickness is millimeter (mm).Table 5 is shown available for each aspheric in embodiment 2 The high order term coefficient of face minute surface.Wherein, the formula (1) that each aspherical face type can be provided in above-described embodiment 1 is limited.Table 6 shows Gone out the effective focal length f1 to f6 of each lens in the optical imaging system of embodiment 2, total effective focal length f of optical imaging system with And the optics total length TTL of optical imaging system.

Table 4

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S3

-1.2162E-01

1.8849E-01

-1.5211E+00

7.5199E+00

-2.2215E+01

4.0669E+01

-4.3886E+01

2.5016E+01

-5.3709E+00

S4

-3.4969E-01

5.4336E-01

-3.2627E+00

6.2363E+01

-6.0900E+02

3.2671E+03

-9.9395E+03

1.6140E+04

-1.0884E+04

S5

-2.0378E-01

3.2852E-02

1.0041E+00

-6.4533E+00

2.0050E+01

-2.0390E+01

-3.8759E+01

1.1667E+02

-7.7554E+01

S6

1.1024E+00

-1.5869E+01

1.1787E+02

-5.8169E+02

1.9839E+03

-4.5826E+03

6.8212E+03

-5.9036E+03

2.2676E+03

S7

1.2959E+00

-2.1182E+01

1.6181E+02

-8.2867E+02

2.9733E+03

-7.2782E+03

1.1485E+04

-1.0493E+04

4.2140E+03

S8

4.8189E-01

-9.8620E+00

7.7021E+01

-3.6649E+02

1.1380E+03

-2.3034E+03

2.9207E+03

-2.1028E+03

6.5468E+02

S9

-1.9894E-03

-2.7700E+00

2.5870E+01

-1.2059E+02

3.3379E+02

-5.6423E+02

5.6340E+02

-2.9658E+02

5.8853E+01

S10

-1.9917E-01

6.8777E-01

6.5421E-01

-8.1660E+00

2.9627E+01

-6.7880E+01

9.9202E+01

-8.0247E+01

2.6532E+01

S11

-4.6199E-01

3.7327E-01

-2.0280E-01

-1.5536E+00

5.0672E+00

-9.0639E+00

9.4133E+00

-5.0115E+00

8.6763E-01

S12

-1.9763E-01

-2.8461E-01

1.3506E+00

-3.4902E+00

5.8410E+00

-6.5492E+00

4.7350E+00

-1.9827E+00

3.6236E-01

Table 5

Parameter	f1(mm)	f2(mm)	f3(mm)	f4(mm)	f5(mm)	f6(mm)
							Numerical value	-1.67	12.13	1.28	-1.40	2.24	35.06
Parameter	f(mm)	TTL(mm)
							Numerical value	1.20	6.00

Table 6

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 system.Fig. 4 B show the astigmatism curve of the optical imaging system of embodiment 2, and it represents son Noon curvature of the image and sagittal image surface bending.Fig. 4 C show the ratio chromatism, curve of the optical imaging system of embodiment 2, and it is represented Light via the different image heights after optical imaging system on imaging surface deviation.Fig. 4 D show the optics of embodiment 2 into As the relative illumination curve of system, it represents the relative illumination corresponding to different image heights on imaging surface.Can according to Fig. 4 A to Fig. 4 D Know, the optical imaging system given by embodiment 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 basis The structural representation of the optical imaging system of the embodiment of the present application 3.

As shown in figure 5, optical imaging system along optical axis from thing side to sequentially including the first lens E1 into image side, it is second saturating Mirror E2, the 3rd lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6 and imaging surface S15.

6th lens E6 has negative power, and its thing side S11 is convex surface, and image side surface S12 is concave surface, and the 6th lens E6 thing side S11 and image side surface S12 is aspherical.

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, the unit of radius of curvature and thickness is millimeter (mm).Table 8 is shown available for each aspheric in embodiment 3 The high order term coefficient of face minute surface.Wherein, the formula (1) that each aspherical face type can be provided in above-described embodiment 1 is limited.Table 9 shows Gone out the effective focal length f1 to f6 of each lens in the optical imaging system of embodiment 3, total effective focal length f of optical imaging system with And the optics total length TTL of optical imaging system.

Table 7

Table 8

Parameter	f1(mm)	f2(mm)	f3(mm)	f4(mm)	f5(mm)	f6(mm)
							Numerical value	-2.04	16.47	1.09	-1.21	2.45	-28.16
Parameter	f(mm)	TTL(mm)
							Numerical value	1.26	5.42

Table 9

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 system.Fig. 6 B show the astigmatism curve of the optical imaging system of embodiment 3, and it represents son Noon curvature of the image and sagittal image surface bending.Fig. 6 C show the ratio chromatism, curve of the optical imaging system of embodiment 3, and it is represented Light via the different image heights after optical imaging system on imaging surface deviation.Fig. 6 D show the optics of embodiment 3 into As the relative illumination curve of system, it represents the relative illumination corresponding to different image heights on imaging surface.Can according to Fig. 6 A to Fig. 6 D Know, the optical imaging system given by embodiment 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 basis The structural representation of the optical imaging system of the embodiment of the present application 4.

As shown in fig. 7, optical imaging system along optical axis from thing side to sequentially including the first lens E1 into image side, it is second saturating Mirror E2, the 3rd lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6 and imaging surface S15.

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, the unit of radius of curvature and thickness is millimeter (mm).Table 11 is shown available for each in embodiment 4 The high order term coefficient of aspherical mirror.Wherein, the formula (1) that each aspherical face type can be provided in above-described embodiment 1 is limited.Table 12 show total effective Jiao of the effective focal length f1 to f6 of each lens in the optical imaging system of embodiment 4, optical imaging system Optics total length TTL away from f and optical imaging system.

Table 10

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S3

-9.8723E-02

-1.6030E-01

6.7445E-01

-7.5105E-02

-9.6099E+00

4.1525E+01

-8.2963E+01

8.2408E+01

-3.2719E+01

S4

-2.2667E-01

-1.2518E+00

3.9107E+01

-3.8552E+02

1.9682E+03

-4.6512E+03

1.1072E+03

1.3913E+04

-1.6819E+04

S5

-2.7251E-01

1.7208E+00

-2.5223E+01

3.2145E+02

-2.7804E+03

1.5109E+04

-4.9831E+04

9.0347E+04

-6.8610E+04

S6

1.9199E+00

-2.1534E+01

1.5776E+02

-9.1766E+02

4.1340E+03

-1.3392E+04

2.8173E+04

-3.3804E+04

1.7423E+04

S7

9.7723E-01

-1.4612E+01

8.1274E+01

-2.4446E+02

3.4300E+02

3.3224E+02

-3.0699E+03

7.1577E+03

-6.1190E+03

S8

-8.7971E-01

8.8871E+00

-6.5963E+01

3.3416E+02

-1.1297E+03

2.5532E+03

-3.7557E+03

3.2752E+03

-1.2864E+03

S9

-1.1781E+00

1.0465E+01

-6.0959E+01

2.5295E+02

-7.6055E+02

1.6531E+03

-2.4298E+03

2.1181E+03

-8.1690E+02

S10

-9.9933E-01

4.4231E+00

-2.5009E+01

1.2971E+02

-4.4886E+02

9.8722E+02

-1.3347E+03

1.0278E+03

-3.4830E+02

S11

-4.0599E-01

1.8400E+00

-1.7043E+01

6.4576E+01

-1.3202E+02

1.5895E+02

-1.1268E+02

4.3588E+01

-7.1141E+00

S12

3.1380E-01

-3.7091E+00

8.8798E+00

-1.2177E+01

1.0479E+01

-5.8431E+00

2.1001E+00

-4.4991E-01

4.3036E-02

Table 11

Parameter	f1(mm)	f2(mm)	f3(mm)	f4(mm)	f5(mm)	f6(mm)
							Numerical value	-2.04	14.36	0.85	-0.78	2.35	5.13
Parameter	f(mm)	TTL(mm)
							Numerical value	1.06	5.35

Table 12

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 system.Fig. 8 B show the astigmatism curve of the optical imaging system of embodiment 4, and it represents son Noon curvature of the image and sagittal image surface bending.Fig. 8 C show the ratio chromatism, curve of the optical imaging system of embodiment 4, and it is represented Light via the different image heights after optical imaging system on imaging surface deviation.Fig. 8 D show the optics of embodiment 4 into As the relative illumination curve of system, it represents the relative illumination corresponding to different image heights on imaging surface.Can according to Fig. 8 A to Fig. 8 D Know, the optical imaging system given by embodiment 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 basis The structural representation of the optical imaging system of the embodiment of the present application 5.

As shown in figure 9, optical imaging system along optical axis from thing side to sequentially including the first lens E1 into image side, it is second saturating Mirror E2, the 3rd lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6 and imaging surface S15.

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, the unit of radius of curvature and thickness is millimeter (mm).Table 14 is shown available for each in embodiment 5 The high order term coefficient of aspherical mirror.Wherein, the formula (1) that each aspherical face type can be provided in above-described embodiment 1 is limited.Table 15 show total effective Jiao of the effective focal length f1 to f6 of each lens in the optical imaging system of embodiment 5, optical imaging system Optics total length TTL away from f and optical imaging system.

Table 13

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S3

-1.1514E-01

-8.2836E-02

5.6436E-01

-2.7003E+00

8.9478E+00

-1.8649E+01

2.3647E+01

-1.6570E+01

4.9131E+00

S4

-2.8358E-01

3.8919E-01

-9.8077E-02

4.9521E+00

-5.1662E+01

2.1788E+02

-4.4709E+02

4.1895E+02

-1.2048E+02

S5

-1.3351E-01

4.6584E-01

-1.0582E+00

9.5335E-01

1.3738E+00

-6.8517E+00

1.2160E+01

-9.9216E+00

3.0296E+00

S6

3.4618E-01

-3.1393E+00

1.5483E+01

-4.5413E+01

7.6783E+01

-6.8273E+01

2.3364E+01

4.6909E+00

-3.8539E+00

S7

-4.2176E-01

-7.8134E-01

6.2939E+00

-6.1480E+00

-4.6416E+01

1.8219E+02

-2.8220E+02

2.0498E+02

-5.7620E+01

S8

-5.1492E-01

2.4199E+00

-9.0804E+00

2.9204E+01

-6.7946E+01

1.0419E+02

-9.7652E+01

4.9836E+01

-1.0439E+01

S9

-1.2224E-03

4.2957E-01

-1.8805E+00

4.4941E+00

-6.6836E+00

5.8956E+00

-2.7810E+00

5.2559E-01

9.9603E-03

S10

-1.7121E-01

4.5804E-01

-5.3934E-01

3.6806E-01

-1.6329E-01

4.8407E-02

-9.3029E-03

1.0475E-03

-5.2227E-05

S11

-2.9609E-01

-1.0103E+00

3.7338E+00

-6.3381E+00

6.3954E+00

-4.0020E+00

1.4989E+00

-3.0116E-01

2.3913E-02

S12

-5.6924E-01

6.8234E-01

-5.8200E-01

3.6829E-01

-2.1595E-01

1.1457E-01

-4.3746E-02

9.2694E-03

-7.8604E-04

Table 14

Parameter	f1(mm)	f2(mm)	f3(mm)	f4(mm)	f5(mm)	f6(mm)
							Numerical value	-2.04	10.80	1.18	-1.31	1.95	-5.33
Parameter	f(mm)	TTL(mm)
							Numerical value	1.27	5.44

Table 15

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 system.Figure 10 B show the astigmatism curve of the optical imaging system of embodiment 5, and it is represented Meridianal image surface is bent and sagittal image surface bending.Figure 10 C show the ratio chromatism, curve of the optical imaging system of embodiment 5, its Represent deviation of the light via the different image heights after optical imaging system on imaging surface.Figure 10 D show the light of embodiment 5 The relative illumination curve of imaging system is learned, it represents the relative illumination corresponding to different image heights on imaging surface.According to Figure 10 A to figure 10D understands that 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 root According to the structural representation of the optical imaging system of the embodiment of the present application 6.

As shown in figure 11, optical imaging system sequentially includes the first lens E1, second along optical axis from thing side into image side Lens E2, the 3rd lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6 and imaging surface S15.

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, the unit of radius of curvature and thickness is millimeter (mm).Table 17 is shown available for each in embodiment 6 The high order term coefficient of aspherical mirror.Wherein, the formula (1) that each aspherical face type can be provided in above-described embodiment 1 is limited.Table 18 show total effective Jiao of the effective focal length f1 to f6 of each lens in the optical imaging system of embodiment 6, optical imaging system Optics total length TTL away from f and optical imaging system.

Table 16

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S3

-2.3715E-01

2.8998E+00

-2.6937E+01

1.3984E+02

-4.4808E+02

9.0459E+02

-1.1174E+03

7.6919E+02

-2.2556E+02

S4

-2.9932E-01

6.5824E-01

1.3484E+00

-1.5908E+01

5.7242E+01

-1.0476E+02

1.0061E+02

-4.6554E+01

7.8041E+00

S5

-1.6956E-01

8.6321E-01

-2.5301E+00

5.1704E+00

-7.7453E+00

8.0878E+00

-5.3068E+00

1.9092E+00

-2.8297E-01

S6

4.6964E-01

-3.1061E+00

1.5383E+01

-5.3560E+01

1.1602E+02

-1.5163E+02

1.1667E+02

-4.8690E+01

8.4867E+00

S7

-3.8695E-01

-3.4158E-01

4.2379E-01

1.2263E+01

-5.6461E+01

1.2408E+02

-1.5043E+02

9.5195E+01

-2.4510E+01

S8

-1.7506E-01

-2.0675E+00

2.2967E+01

-1.1321E+02

3.3141E+02

-5.9955E+02

6.5802E+02

-4.0142E+02

1.0417E+02

S9

3.3849E-01

-5.4360E+00

3.3642E+01

-1.2139E+02

2.7687E+02

-4.0615E+02

3.6815E+02

-1.8596E+02

3.9829E+01

S10

1.8769E-01

-2.0154E+00

5.6205E+00

-6.9038E+00

4.5077E+00

-1.6984E+00

3.7220E-01

-4.4195E-02

2.2034E-03

S11

2.0394E-03

-1.8195E+00

4.8878E+00

-6.4893E+00

5.0780E+00

-2.4349E+00

7.0326E-01

-1.1222E-01

7.5704E-03

S12

2.4382E-02

-5.7384E-02

4.4179E-03

-4.8904E-05

-9.1623E-06

5.4041E-07

-1.3600E-08

1.6773E-10

-8.2752E-13

Table 17

Table 18

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 system.Figure 12 B show the astigmatism curve of the optical imaging system of embodiment 6, and it is represented Meridianal image surface is bent and sagittal image surface bending.Figure 12 C show the ratio chromatism, curve of the optical imaging system of embodiment 6, its Represent deviation of the light via the different image heights after optical imaging system on imaging surface.Figure 12 D show the light of embodiment 6 The relative illumination curve of imaging system is learned, it represents the relative illumination corresponding to different image heights on imaging surface.According to Figure 12 A to figure 12D understands that 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 root According to the structural representation of the optical imaging system of the embodiment of the present application 7.

As shown in figure 13, optical imaging system sequentially includes the first lens E1, second along optical axis from thing side into image side Lens E2, the 3rd lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6 and imaging surface S15.

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, the unit of radius of curvature and thickness is millimeter (mm).Table 20 is shown available for each in embodiment 7 The high order term coefficient of aspherical mirror.Wherein, the formula (1) that each aspherical face type can be provided in above-described embodiment 1 is limited.Table 21 show total effective Jiao of the effective focal length f1 to f6 of each lens in the optical imaging system of embodiment 7, optical imaging system Optics total length TTL away from f and optical imaging system.

Table 19

Table 20

Parameter	f1(mm)	f2(mm)	f3(mm)	f4(mm)	f5(mm)	f6(mm)
							Numerical value	-1.73	10.87	1.09	-1.16	2.45	20.88
Parameter	f(mm)	TTL(mm)
							Numerical value	1.18	5.44

Table 21

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 system.Figure 14 B show the astigmatism curve of the optical imaging system of embodiment 7, and it is represented Meridianal image surface is bent and sagittal image surface bending.Figure 14 C show the ratio chromatism, curve of the optical imaging system of embodiment 7, its Represent deviation of the light via the different image heights after optical imaging system on imaging surface.Figure 14 D show the light of embodiment 7 The relative illumination curve of imaging system is learned, it represents the relative illumination corresponding to different image heights on imaging surface.According to Figure 14 A to figure 14D understands that the optical imaging system given by embodiment 7 can realize good image quality.

Embodiment 8

The optical imaging system according to the embodiment of the present application 8 is described referring to Figure 15 to Figure 16 D.Figure 15 shows root According to the structural representation of the optical imaging system of the embodiment of the present application 8.

As shown in figure 15, optical imaging system sequentially includes the first lens E1, second along optical axis from thing side into image side Lens E2, the 3rd lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6 and imaging surface S15.

Table 22 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, the unit of radius of curvature and thickness is millimeter (mm).Table 23 is shown available for each in embodiment 7 The high order term coefficient of aspherical mirror.Wherein, the formula (1) that each aspherical face type can be provided in above-described embodiment 1 is limited.Table 24 show total effective Jiao of the effective focal length f1 to f6 of each lens in the optical imaging system of embodiment 7, optical imaging system Optics total length TTL away from f and optical imaging system.

Table 22

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S3

-1.5918E-01

2.8836E-01

-2.7325E+00

1.4854E+01

-4.9213E+01

1.0160E+02

-1.2677E+02

8.7412E+01

-2.5524E+01

S4

-3.5919E-01

-3.4873E-01

3.0268E+01

-3.9473E+02

2.9508E+03

-1.3490E+04

3.7153E+04

-5.6584E+04

3.6637E+04

S5

-3.1217E-01

9.9000E-01

-4.4514E+00

3.1538E+01

-1.8405E+02

6.9557E+02

-1.5708E+03

1.9322E+03

-9.8005E+02

S6

1.0597E+00

-2.0461E+01

1.9097E+02

-1.1312E+03

4.4826E+03

-1.1857E+04

2.0110E+04

-1.9786E+04

8.6098E+03

S7

7.9566E-01

-1.9651E+01

1.7936E+02

-9.8665E+02

3.5902E+03

-8.7233E+03

1.3635E+04

-1.2413E+04

5.0196E+03

S8

-4.1116E-01

1.7073E-01

5.9658E+00

-1.6039E+01

-3.1252E+01

2.6325E+02

-6.1933E+02

6.7344E+02

-2.8823E+02

S9

-6.5934E-01

4.3844E+00

-2.7657E+01

1.4037E+02

-4.8685E+02

1.1080E+03

-1.5687E+03

1.2454E+03

-4.2294E+02

S10

-7.7501E-01

2.0958E+00

-1.8308E+00

-1.5266E+01

8.7968E+01

-2.2461E+02

3.1626E+02

-2.3342E+02

6.9816E+01

S11

-2.5321E-01

-7.4685E-01

2.5727E+00

-3.7881E+00

2.8476E+00

-3.3044E-01

-1.3088E+00

1.0667E+00

-2.8097E-01

S12

-6.2951E-01

7.1374E-02

1.5324E+00

-3.6715E+00

4.7435E+00

-3.8026E+00

1.8719E+00

-5.1646E-01

6.0864E-02

Table 23

Parameter	f1(mm)	f2(mm)	f3(mm)	f4(mm)	f5(mm)	f6(mm)
							Numerical value	-1.82	13.45	1.08	-1.16	2.43	26.53
Parameter	f(mm)	TTL(mm)
							Numerical value	1.19	5.41

Table 24

Figure 16 A show chromatic curve on the axle of the optical imaging system of embodiment 8, and it represents the light warp of different wave length Deviateed by the converging focal point after optical system.Figure 16 B show the astigmatism curve of the optical imaging system of embodiment 8, and it is represented Meridianal image surface is bent and sagittal image surface bending.Figure 16 C show the ratio chromatism, curve of the optical imaging system of embodiment 8, its Represent deviation of the light via the different image heights after optical imaging system on imaging surface.Figure 16 D show the light of embodiment 8 The relative illumination curve of imaging system is learned, it represents the relative illumination corresponding to different image heights on imaging surface.According to Figure 16 A to figure 16D understands that the optical imaging system given by embodiment 8 can realize good image quality.

To sum up, embodiment 1 to embodiment 8 meets the relation shown in table 25 below respectively.

Table 25

The application also provides a kind of imaging device, and its electronics photo-sensitive cell can be photosensitive coupling element (CCD) or complementation Property matal-oxide semiconductor element (CMOS).Imaging device can be such as digital camera independent picture pick-up device or It is integrated in the image-forming module 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.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

1. optical imaging system, is sequentially included along optical axis by thing side to image side：First lens, the second lens, the 3rd lens, Four lens, the 5th lens and the 6th lens,

Characterized in that,

First lens and the 4th lens are respectively provided with negative power；

Second lens and the 6th lens are respectively provided with positive light coke or negative power；

The effective focal length f3 of 3rd lens meets 0 ＜ f3/f5 ＜ 0.8 with the effective focal length f5 of the 5th lens.

2. optical imaging system according to claim 1, it is characterised in that the 3rd lens and the 5th lens are equal With positive light coke.

3. optical imaging system according to claim 1, it is characterised in that the maximum half field-of-view of the optical imaging system Angle HFOV meets Tan (HFOV/2) >=0.9.

4. the optical imaging system according to claim 1 or 3, it is characterised in that meet 0.5 ＜ f/f345 ＜ 0.9,

Wherein, f is total effective focal length of the optical imaging system,

F345 is the combined focal length of the 3rd lens, the 4th lens and the 5th lens.

5. the optical imaging system according to claim 1 or 3, it is characterised in that the optical imaging system it is total effectively Focal length f and second lens effective focal length f2 meet f/f2≤0.2.

6. the optical imaging system according to claim 1 or 3, it is characterised in that the optical imaging system it is total effectively Focal length f and the 4th lens effective focal length f4 meet -1.5 ＜ f/f4 ＜ -0.5.

7. the optical imaging system according to claim 1 or 3, it is characterised in that the effective focal length f1 of first lens Met with the effective focal length f6 of the 6th lens | f1/f6 | ＜ 0.5.

8. the optical imaging system according to claim 1 or 3, it is characterised in that the 6th lens are at maximum radius Edge thickness ET6 and the 6th lens meet 1 ＜ ET6/CT6 ＜ 2 in the center thickness CT6 on the optical axis.

9. the optical imaging system according to claim 1 or 3, it is characterised in that the thing side of the 6th lens is most Rise SAG61 at large radius is met with the 6th lens in the center thickness CT6 on the optical axis | SAG61 |/CT6 ＜ 1.

10. the optical imaging system according to claim 1 or 3, it is characterised in that the 6th lens are on the optical axis Center thickness CT6 and first lens meet 0.5 ＜ CT6/CT1 ＜ 1.0 in the center thickness CT1 on the optical axis.

11. the optical imaging system according to claim 1 or 3, it is characterised in that meet 0.1 ＜ T56/ ∑ AT ＜ 0.5,

Wherein, T56 be the 5th lens and the 6th lens in the airspace on the optical axis,

Σ AT are first lens spacing distance of the lens of arbitrary neighborhood two on the optical axis into the 6th lens Summation.

12. the optical imaging system according to claim 1 or 3, it is characterised in that the optical imaging system it is total effectively Focal length f and the radius of curvature R 3 of the thing side of second lens meet f/ | R3 | ＜ 0.3.

13. the optical imaging system according to claim 1 or 3, it is characterised in that the curvature of the 4th lens thing side Radius R7 and the 4th lens image side surface radius of curvature R 8 meet -5.0 ＜ R7/R8 ＜ 0.

14. the optical imaging system according to any one of claim 1 to 13, it is characterised in that the optical imagery system Total effective focal length f of system meets f/EPD≤2.2 with the Entry pupil diameters EPD of the optical imaging system.

15. optical imaging system, with total effective focal length f, the optical imaging system along optical axis by thing side to image side sequentially Including：First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens,

Characterized in that,

First lens have negative power；

The combination focal power of 3rd lens, the 4th lens and the 5th lens is positive light coke,

Wherein, at least one in the 3rd lens, the 4th lens and the 5th lens has negative power, and institute The combination focal power f345 for stating the 3rd lens, the 4th lens and the 5th lens meets 0.5 ＜ f/f345 ＜ 0.9.

16. optical imaging system, the first lens with focal power are sequentially included by thing side to image side along optical axis, second saturating Mirror, the 3rd lens, the 4th lens, the 5th lens and the 6th lens,

Characterized in that,

First lens and the 4th lens are respectively provided with negative power；

3rd lens and the 5th lens are respectively provided with positive light coke；

At least one in second lens and the 6th lens has positive light coke, and

Rise SAG61 of the thing side of 6th lens at maximum radius is with the 6th lens on the optical axis Heart thickness CT6 is met | SAG61 |/CT6 ＜ 1.