CN209044159U - Imaging optical system - Google Patents
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- CN209044159U CN209044159U CN201821827433.4U CN201821827433U CN209044159U CN 209044159 U CN209044159 U CN 209044159U CN 201821827433 U CN201821827433 U CN 201821827433U CN 209044159 U CN209044159 U CN 209044159U
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Abstract
This application discloses a kind of imaging optical system, which sequentially includes: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens by object side to image side along optical axis.Wherein, the first lens have positive light coke, and object side is convex surface, and image side surface is concave surface；Second lens have negative power, and object side is convex surface, and image side surface is concave surface；The third lens have focal power；4th lens have focal power；5th lens have positive light coke；6th lens have negative power, and object side is concave surface.The half ImgH of effective pixel area diagonal line length meets TTL/ImgH < 1.5 on the object side of first lens to the imaging surface of distance TTL and imaging optical system of the imaging surface on optical axis of imaging optical system.
Description
Technical field
This application involves a kind of imaging optical systems, more specifically, this application involves a kind of camera shootings including six-element lens
Optical system.
Background technique
With the development of science and technology the electronic product with camera function is fast-developing, people are to suitable for portable electronic
The requirement of the imaging optical system of product is gradually increased.Meanwhile with photosensitive coupling element (CCD) or Complimentary Metal-Oxide half
The progress of the technologies such as the imaging sensors such as conductor element (CMOS), so that the size that pixel number increases single pixel simultaneously on chip subtracts
Small, this also proposed increasingly higher demands to the high imaging performance of matching used imaging optical system.
Therefore, it is necessary to one kind to have big image planes, large aperture, the imaging optical system of the characteristics such as ultra-thin.
Utility model content
This application provides be applicable to portable electronic product, can at least solve or part solve it is in the prior art
The imaging optical system of at least one above-mentioned disadvantage.
On the one hand, this application provides such a imaging optical systems, and the imaging optical system is along optical axis by object side
It sequentially include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens to image side.Wherein,
One lens can have positive light coke, and object side can be convex surface, and image side surface can be concave surface；Second lens can have negative power,
Its object side can be convex surface, and image side surface can be concave surface；The third lens have focal power；4th lens have focal power；5th thoroughly
Mirror can have positive light coke；6th lens can have negative power, and object side can be concave surface.Wherein, the object side of the first lens
Effective pixel area on face to the imaging surface of distance TTL and imaging optical system of the imaging surface on optical axis of imaging optical system
The half ImgH of diagonal line length can meet TTL/ImgH < 1.5.
In one embodiment, total effective focal length f of imaging optical system and the maximum half field-of-view of imaging optical system
Angle HFOV can meet 4.6mm < f*tan (HFOV) < 7mm.
In one embodiment, the effective focal length f1 of the first lens and the effective focal length f6 of the 6th lens can meet -2.5
< f1/f6 < -1.5.
In one embodiment, the effective focal length f2 of the second lens and the effective focal length f5 of the 5th lens can meet -2.5
< f2/ (f5*2) < -1.5.
In one embodiment, the curvature of the image side surface of the radius of curvature R 1 and the second lens of the object side of the first lens
Radius R4 can meet 1 < R4/R1 < 2.
In one embodiment, the curvature of the object side of the radius of curvature R 3 and the 6th lens of the object side of the second lens
Radius R11 can meet -2.5 < R3/R11 < -1.
In one embodiment, center thickness CT1, second lens center on optical axis of first lens on optical axis
The center thickness CT3 of thickness CT2 and the third lens on optical axis can meet 1 < CT1/ (CT2+CT3) < 1.5.
In one embodiment, spacing distance T56 and the second lens on optical axis of the 5th lens and the 6th lens and
Spacing distance T23 of the third lens on optical axis can meet 0.6 < T56/T23 < 1.2.
In one embodiment, the intersection point of the image side surface of the 5th lens and optical axis to the 5th lens image side surface it is effective
The center thickness CT5 of distance SAG52 and the 5th lens on optical axis can meet 1 < on the axis on half bore vertex | SAG52/CT5 |
< 1.5.
In one embodiment, center thickness CT6 of the edge thickness ET6 and the 6th lens of the 6th lens on optical axis
1 < ET6/CT6 < 2 can be met.
In one embodiment, total effective focal length f of the imaging optical system and Entry pupil diameters EPD of imaging optical system
F/EPD < 1.8 can be met.
On the other hand, this application provides such a imaging optical systems, and the imaging optical system is along optical axis by object
Side to image side sequentially includes: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.Wherein,
First lens can have positive light coke, and object side can be convex surface, and image side surface can be concave surface；Second lens can have negative light focus
Degree, object side can be convex surface, and image side surface can be concave surface；The third lens have focal power；4th lens have focal power；5th
Lens can have positive light coke；6th lens can have negative power, and object side can be concave surface.Wherein, the picture of the 5th lens
Distance SAG52 and the 5th lens exist on the intersection point of side and optical axis to the axis on effective half bore vertex of the image side surface of the 5th lens
Center thickness CT5 on optical axis can meet 1 < | SAG52/CT5 | < 1.5.
In another aspect, the imaging optical system is along optical axis by object this application provides such a imaging optical system
Side to image side sequentially includes: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.Wherein,
First lens can have positive light coke, and object side can be convex surface, and image side surface can be concave surface；Second lens can have negative light focus
Degree, object side can be convex surface, and image side surface can be concave surface；The third lens have focal power；4th lens have focal power；5th
Lens can have positive light coke；6th lens can have negative power, and object side can be concave surface.Wherein, the side of the 6th lens
The center thickness CT6 of edge thickness E T6 and the 6th lens on optical axis can meet 1 < ET6/CT6 < 2.
The application use six-element 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 imaging optical system has ultra-thin, large aperture, big image planes, high imaging
At least one beneficial effect such as quality.
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 imaging optical 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 imaging optical system of embodiment 1, astigmatism curve, distortion
Curve and ratio chromatism, curve；
Fig. 3 shows the structural schematic diagram of the imaging optical 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 imaging optical system of embodiment 2, astigmatism curve, distortion
Curve and ratio chromatism, curve；
Fig. 5 shows the structural schematic diagram of the imaging optical 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 imaging optical system of embodiment 3, astigmatism curve, distortion
Curve and ratio chromatism, curve；
Fig. 7 shows the structural schematic diagram of the imaging optical 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 imaging optical system of embodiment 4, astigmatism curve, distortion
Curve and ratio chromatism, curve；
Fig. 9 shows the structural schematic diagram of the imaging optical 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 imaging optical system of embodiment 5, astigmatism curve, abnormal
Varied curve and ratio chromatism, curve；
Figure 11 shows the structural schematic diagram of the imaging optical 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 imaging optical system of embodiment 6, astigmatism curve, abnormal
Varied curve and ratio chromatism, curve；
Figure 13 shows the structural schematic diagram of the imaging optical 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 imaging optical system of embodiment 7, astigmatism curve, abnormal
Varied curve and ratio chromatism, curve；
Figure 15 shows the structural schematic diagram of the imaging optical system according to the embodiment of the present application 8；
Figure 16 A to Figure 16 D respectively illustrates chromatic curve on the axis of the imaging optical system of embodiment 8, 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 the lens near the surface of object
Object side, 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.
Imaging optical system according to the application illustrative embodiments may include such as six lens with focal power,
That is, the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.This six-element lens is along optical axis
By object side to image side sequential, and can have airspace between each adjacent lens.
In the exemplary embodiment, the first lens can have positive light coke, and object side can be convex surface, and image side surface can be
Concave surface；Second lens can have negative power, and object side can be convex surface, and image side surface can be concave surface；The third lens have positive light
Focal power or negative power；4th lens have positive light coke or negative power；5th lens can have positive light coke；6th lens
There can be negative power, object side can be concave surface.
Rationally the first lens of control and the second power of lens and face type are conducive to the picture for reducing visual field in system axle
Difference makes have good imaging performance in system axle.By the third lens, the 4th lens, the 5th lens it is reasonably combined, favorably
In the higher order aberratons that balance lens generate, so that each visual field of system has lesser aberration.By the object side for controlling the 6th lens
The face type in face is concave surface, is conducive to the matching of system chief ray and image planes.
In the exemplary embodiment, the object side of the third lens can be convex surface.
In the exemplary embodiment, the object side of the 5th lens can be convex surface, and image side surface can be convex surface.
In the exemplary embodiment, the image side surface of the 6th lens can be concave surface.
In the exemplary embodiment, the imaging optical system of the application can meet conditional 4.6mm < f*tan (HFOV)
< 7mm, wherein f is total effective focal length of imaging optical system, and HFOV is the maximum angle of half field-of view of imaging optical system.More
Body, f and HFOV can further meet 4.6mm < f*tan (HFOV)≤5.0mm, for example, 4.64mm≤f*tan (HFOV)≤
4.71mm.By constrain imaging optical system total effective focal length and maximum angle of half field-of view, may be implemented the big image planes of system at
As effect.
In the exemplary embodiment, the imaging optical system of the application can meet conditional TTL/ImgH < 1.5,
In, TTL is the object side of the first lens to distance of the imaging surface on optical axis of imaging optical system, and ImgH is camera optical system
The half of effective pixel area diagonal line length on the imaging surface of system.More specifically, TTL and ImgH can further meet 1.40≤
TTL/ImgH≤1.42.By the ratio of distance and image height on the first lens object side to the axis of imaging surface of constraint, may be implemented
The ultra-thin characteristic of system.
In the exemplary embodiment, the imaging optical system of the application can meet -2.5 < -1.5 < f1/f6 of conditional,
Wherein, f1 is the effective focal length of the first lens, and f6 is the effective focal length of the 6th lens.More specifically, f1 and f6 can further expire
Foot -2.12≤f1/f6≤- 1.71.It, can be reasonable by rationally controlling the ratio of the effective focal length of the first lens and the 6th lens
The focal power of distribution system, so that the positive negative spherical aberration of preceding group of lens and rear group lens is cancelled out each other.
In the exemplary embodiment, the imaging optical system of the application can meet conditional -2.5 < f2/ (f5*2) < -
1.5, wherein f2 is the effective focal length of the second lens, and f5 is the effective focal length of the 5th lens.More specifically, f2 and f5 are further
- 2.19≤f2/ (f5*2)≤- 1.55 can be met.The second lens of reasonable distribution and the 5th power of lens, so that the second lens
In a certain range with the ratio of the effective focal length of the 5th lens, be conducive to balance the off-axis aberration of imaging optical system.
In the exemplary embodiment, the imaging optical system of the application can meet 1 < of conditional | SAG52/CT5 | <
1.5, wherein SAG52 be the 5th lens image side surface and optical axis intersection point to the 5th lens image side surface effective half bore top
Distance on the axis of point, CT5 are center thickness of the 5th lens on optical axis.More specifically, SAG52 and CT5 can further meet
1.17≤|SAG52/CT5|≤1.36.Meet 1 < of conditional | SAG52/CT5 | < 1.5 can effectively reduce the 5th lens
The incidence angle of chief ray on image side surface, so as to effectively improve the matching degree of optical system and chip.
In the exemplary embodiment, the imaging optical system of the application can meet 1 < ET6/CT6 < 2 of conditional,
In, ET6 is the edge thickness of the 6th lens, and CT6 is center thickness of the 6th lens on optical axis.More specifically, ET6 and CT6
1.12≤ET6/CT6≤1.60 can further be met.By rationally controlling the edge thickness of the 6th lens and the ratio of center thickness
Value makes imaging optical system have good craftsmanship, easy to manufacture.
In the exemplary embodiment, the imaging optical system of the application can meet 1 < R4/R1 < 2 of conditional, wherein
R1 is the radius of curvature of the object side of the first lens, and R4 is the radius of curvature of the image side surface of the second lens.More specifically, R4 and R1
1.46≤R4/R1≤1.81 can further be met.The rationally radius of curvature of the image side surface of the 4th lens of control and the first lens
The ratio of the radius of curvature of object side can effectively balance aberration on the axis of imaging optical system generation.
In the exemplary embodiment, the imaging optical system of the application can meet -2.5 < -1 < R3/R11 of conditional,
Wherein, R3 is the radius of curvature of the object side of the second lens, and R11 is the radius of curvature of the object side of the 6th lens.More specifically,
R3 and R11 can further meet -2.32≤R3/R11≤- 1.44.By the object side and the 6th lens that control the second lens
The ratio of the radius of curvature of object side can control the light angle of peripheral field in the reasonable scope, so as to effective
The sensibility of ground reduction system.
In the exemplary embodiment, the imaging optical system of the application can meet 0.6 < T56/T23 < 1.2 of conditional,
Wherein, T56 is the spacing distance of the 5th lens and the 6th lens on optical axis, and T23 is the second lens and the third lens in optical axis
On spacing distance.More specifically, T56 and T23 can further meet 0.77≤T56/T23≤1.14.Thoroughly by constraint the 5th
The air gap of the air gap and the second lens and the third lens of mirror and the 6th lens can be such that group lens before system are produced
The curvature of field caused by the raw curvature of field and rear group lens is balanced, and system is made to have the reasonable curvature of field.
In the exemplary embodiment, the imaging optical system of the application can meet conditional 1 < CT1/ (CT2+CT3) <
1.5, wherein CT1 is center thickness of first lens on optical axis, and CT2 is center thickness of second lens on optical axis, CT3
The center thickness for being the third lens on optical axis.More specifically, CT1, CT2 and CT3 can further meet 1.18≤CT1/ (CT2+
CT3)≤1.36.Pass through the ratio of the sum of the center thickness and the second lens and the third lens center thickness that rationally control the first lens
Value, it is ensured that optical system has good processable characteristic, and can guarantee from the object side of the first lens to optical system
Distance is controlled within a certain range on the axis of the imaging surface of system.
In the exemplary embodiment, the imaging optical system of the application can meet conditional f/EPD < 1.8, wherein f
For total effective focal length of imaging optical system, EPD is the Entry pupil diameters of imaging optical system.More specifically, f and EPD are further
1.65≤f/EPD≤1.75 can be met, for example, 1.69≤f/EPD≤1.70.Meet conditional f/EPD < 1.8, camera optical
System has the characteristics that, so as to increase the luminous flux in the system unit time, to enhance the imaging under dark situation compared with large aperture
Effect；Meanwhile it can reduce the aberration of peripheral field.
In the exemplary embodiment, above-mentioned imaging optical system may also include diaphragm, with the imaging of improving optical system
Quality.Locate at an arbitrary position it will be appreciated by those skilled in the art that diaphragm can be set as needed.For example, diaphragm may be provided at
Between object side and the first lens；Alternatively, diaphragm may be provided between the first lens and the second lens.
Optionally, above-mentioned imaging optical 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 six can be used according to the imaging optical 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 optical system, reduce the susceptibility of optical system and improve the machinability of optical system, make
Imaging optical system is obtained to be more advantageous to production and processing and be applicable to portable electronic product.Shooting light through the above configuration
System can also have the beneficial effects such as big image planes, large aperture, miniaturization, high imaging quality.
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, the 5th lens and each lens in the 6th lens object side and image side surface
At least one of be aspherical mirror.The characteristics of non-spherical lens is: from lens centre to lens perimeter, curvature is continuously to become
Change.Have the spherical lens of constant curvature different from from lens centre to lens perimeter, non-spherical lens has more preferably bent
Rate radius characteristic has the advantages that improve and distorts aberration and improvement astigmatic image error.It, can be as much as possible after non-spherical lens
The aberration occurred when imaging is eliminated, so as to improve image quality.Optionally, the first lens, the second lens, third are saturating
Mirror, the 4th lens, the object side of the 5th lens and each lens in the 6th lens and image side surface 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 imaging optical system can be changed, to obtain each result and advantage described in this specification.Example
Such as, although being described by taking six lens as an example in embodiments, which is not limited to include six
Lens.If desired, the imaging optical system may also include the lens of other quantity.
The specific embodiment for being applicable to the imaging optical 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 imaging optical system of the embodiment of the present application 1.Fig. 1 is shown according to this
Apply for the structural schematic diagram of the imaging optical system of embodiment 1.
As shown in Figure 1, according to the imaging optical system of the application illustrative embodiments along optical axis by object side to image side according to
Sequence include: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly
Mirror E6, optical filter E7 and imaging surface S15.
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 positive light coke, and object side S5 is
Convex surface, image side surface S6 are convex 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 positive light coke, and object side S9 is convex surface, and image side surface S10 is convex surface.6th lens E6 has negative power,
Its object side S11 is concave surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.
Table 1 show the surface types of each lens of the imaging optical 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
As shown in Table 1, the object side of any one lens of the first lens E1 into the 6th lens E6 and image side surface are
It is aspherical.In the present embodiment, 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 be circular cone coefficient (
It has been provided in table 1)；Ai is the correction factor of aspherical i-th-th rank.The following table 2 give can be used for it is each aspherical in embodiment 1
The high-order coefficient A of mirror surface S1-S124、A6、A8、A10、A12、A14、A16、A18And A20。
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.4304E-03 | 8.6937E-03 | -1.7385E-02 | 2.2318E-02 | -1.8171E-02 | 9.3766E-03 | -2.9888E-03 | 5.3601E-04 | -4.2198E-05 |
| S2 | -1.9305E-02 | 1.8495E-02 | -1.2501E-02 | 1.3562E-02 | -1.7028E-02 | 1.3575E-02 | -6.2576E-03 | 1.5410E-03 | -1.5763E-04 |
| S3 | -6.4995E-02 | 6.1193E-02 | -2.4692E-02 | 1.8002E-02 | -3.1170E-02 | 3.2239E-02 | -1.7531E-02 | 4.9060E-03 | -5.5950E-04 |
| S4 | -4.6805E-02 | 6.0452E-02 | -5.5829E-02 | 1.1431E-01 | -1.8116E-01 | 1.7141E-01 | -9.3332E-02 | 2.7227E-02 | -3.2650E-03 |
| S5 | -3.5567E-02 | 1.9088E-02 | -4.6905E-02 | 6.4179E-02 | -6.2094E-02 | 3.8300E-02 | -1.4397E-02 | 2.8259E-03 | -1.9255E-04 |
| S6 | -6.0548E-02 | 2.2490E-02 | -5.5819E-02 | 8.1464E-02 | -8.7056E-02 | 6.0591E-02 | -2.5833E-02 | 6.1451E-03 | -6.2619E-04 |
| S7 | -7.3371E-02 | 2.1583E-02 | -3.8994E-02 | 5.5579E-02 | -5.7388E-02 | 3.8509E-02 | -1.5642E-02 | 3.5511E-03 | -3.4823E-04 |
| S8 | -5.8456E-02 | 2.9089E-02 | -3.7065E-02 | 3.6498E-02 | -2.3374E-02 | 9.6348E-03 | -2.4647E-03 | 3.5555E-04 | -2.1927E-05 |
| S9 | -2.5423E-02 | 7.7336E-05 | 6.6994E-04 | -2.1733E-03 | 1.0800E-03 | -9.5867E-05 | -6.6958E-05 | 1.9214E-05 | -1.4822E-06 |
| S10 | -3.6454E-02 | 1.3530E-02 | -3.4348E-03 | -1.0883E-03 | 9.2497E-04 | -2.0948E-04 | 1.9551E-05 | -5.4985E-07 | -1.1891E-08 |
| S11 | -5.1822E-02 | 2.4423E-02 | -1.2209E-02 | 4.2176E-03 | -8.4210E-04 | 9.9621E-05 | -6.9863E-06 | 2.7029E-07 | -4.4678E-09 |
| S12 | -3.2057E-02 | 1.1499E-02 | -3.5690E-03 | 7.8497E-04 | -1.1952E-04 | 1.2161E-05 | -7.8491E-07 | 2.8887E-08 | -4.5800E-10 |
Table 2
Table 3 gives the effective focal length f1 to f6 of each lens in embodiment 1, total effective focal length f of imaging optical system,
Effective pixel area pair of the object side S1 to imaging surface S15 of one lens E1 on the distance TTL and imaging surface S15 on optical axis
The long half ImgH of linea angulata.
| f1(mm) | 5.06 | f6(mm) | -2.42 |
| f2(mm) | -13.79 | f(mm) | 5.50 |
| f3(mm) | 28.04 | TTL(mm) | 6.70 |
| f4(mm) | -39.96 | ImgH(mm) | 4.75 |
| f5(mm) | 3.16 |
Table 3
Imaging optical system in embodiment 1 meets:
F*tan (HFOV)=4.64, wherein f is total effective focal length of imaging optical system, and HFOV is imaging optical system
Maximum angle of half field-of view；
TTL/ImgH=1.41, wherein TTL be the first lens E1 object side S1 to imaging surface S15 on optical axis away from
From ImgH is the half of effective pixel area diagonal line length on imaging surface S15；
F1/f6=-2.09, wherein f1 is the effective focal length of the first lens E1, and f6 is the effective focal length of the 6th lens E6；
F2/ (f5*2)=- 2.18, wherein f2 is the effective focal length of the second lens E2, and f5 is effective coke of the 5th lens E5
Away from；
| SAG52/CT5 |=1.35, wherein the intersection point of image side surface S10 and optical axis that SAG52 is the 5th lens E5 to the 5th
Distance on the axis on effective half bore vertex of the image side surface S10 of lens E5, CT5 are that center of the 5th lens E5 on optical axis is thick
Degree；
ET6/CT6=1.60, wherein ET6 is the edge thickness of the 6th lens E6, and CT6 is the 6th lens E6 on optical axis
Center thickness；
R4/R1=1.81, wherein R1 is the radius of curvature of the object side S1 of the first lens E1, and R4 is the second lens E2's
The radius of curvature of image side surface S4；
R3/R11=-2.27, wherein R3 is the radius of curvature of the object side S3 of the second lens E2, and R11 is the 6th lens E6
Object side S11 radius of curvature；
T56/T23=0.99, wherein T56 is spacing distance of the 5th lens E5 and the 6th lens E6 on optical axis, T23
For the spacing distance of the second lens E2 and the third lens E3 on optical axis；
CT1/ (CT2+CT3)=1.21, wherein CT1 is center thickness of the first lens E1 on optical axis, CT2 second
Center thickness of the lens E2 on optical axis, CT3 are center thickness of the third lens E3 on optical axis；
F/EPD=1.69, wherein f is total effective focal length of imaging optical system, and EPD is the entrance pupil of imaging optical system
Diameter.
Fig. 2A shows chromatic curve on the axis of the imaging optical system of embodiment 1, indicates the light warp of different wave length
Deviateed by the converging focal point after system.Fig. 2 B shows the astigmatism curve of the imaging optical system of embodiment 1, indicates meridian picture
Face bending and sagittal image surface bending.Fig. 2 C shows the distortion curve of the imaging optical system of embodiment 1, indicates different image heights
The corresponding distortion sizes values in place.Fig. 2 D shows the ratio chromatism, curve of the imaging optical system of embodiment 1, indicates light
Via the deviation of the different image heights after system on imaging surface.A to Fig. 2 D is it is found that camera shooting given by embodiment 1 according to fig. 2
Optical system can be realized good image quality.
Embodiment 2
Referring to Fig. 3 to Fig. 4 D description according to the imaging optical 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
Imaging optical system structural schematic diagram.
As shown in figure 3, according to the imaging optical system of the application illustrative embodiments along optical axis by object side to image side according to
Sequence include: the first lens E1, diaphragm STO, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly
Mirror E6, optical filter E7 and imaging surface S15.
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 positive light coke, 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 concave surface.The
Five lens E5 have positive light coke, and object side S9 is convex surface, and image side surface S10 is convex surface.6th lens E6 has negative power,
Its object side S11 is concave surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.
Table 4 show the surface types of each lens of the imaging optical 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
As shown in Table 4, in example 2, the object side of any one lens of the first lens E1 into the 6th lens E6
It is aspherical with image side surface.Table 5 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 2, wherein each non-
Spherical surface type can be limited by the formula (1) provided in above-described embodiment 1.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -8.6839E-04 | 1.7656E-03 | -1.2418E-03 | -7.7395E-04 | 1.8774E-03 | -1.5028E-03 | 6.0968E-04 | -1.2917E-04 | 1.1026E-05 |
| S2 | -2.7923E-02 | 3.8825E-02 | -2.9775E-02 | 1.0943E-02 | 9.4871E-04 | -3.1714E-03 | 1.5118E-03 | -3.2770E-04 | 2.8216E-05 |
| S3 | -5.5905E-02 | 6.6006E-02 | -1.7672E-02 | -4.7091E-02 | 8.1484E-02 | -6.5346E-02 | 2.9927E-02 | -7.4789E-03 | 7.9620E-04 |
| S4 | -3.2614E-02 | 3.0067E-02 | 6.2132E-02 | -2.1587E-01 | 3.4338E-01 | -3.2635E-01 | 1.8860E-01 | -6.1117E-02 | 8.5692E-03 |
| S5 | -2.5235E-02 | -2.0320E-02 | 9.3531E-02 | -2.7693E-01 | 4.6108E-01 | -4.6713E-01 | 2.8295E-01 | -9.4468E-02 | 1.3401E-02 |
| S6 | -3.4772E-02 | -2.7625E-02 | 7.8933E-02 | -1.4204E-01 | 1.4785E-01 | -9.8975E-02 | 4.1494E-02 | -9.7910E-03 | 9.9344E-04 |
| S7 | -6.5684E-02 | 1.6684E-02 | -1.8634E-02 | 2.4310E-02 | -2.0087E-02 | 5.4894E-03 | 1.9420E-03 | -1.3021E-03 | 1.8511E-04 |
| S8 | -6.5286E-02 | 1.9970E-02 | -2.0365E-02 | 2.3511E-02 | -1.6628E-02 | 7.0431E-03 | -1.7037E-03 | 2.1562E-04 | -1.1058E-05 |
| S9 | -2.9729E-02 | 7.6138E-03 | -2.3739E-02 | 2.3017E-02 | -1.2598E-02 | 4.3051E-03 | -9.1596E-04 | 1.1040E-04 | -5.6708E-06 |
| S10 | -2.0793E-02 | 1.0705E-02 | -1.4037E-02 | 7.9693E-03 | -2.2681E-03 | 3.7211E-04 | -3.6470E-05 | 2.0125E-06 | -4.8630E-08 |
| S11 | -2.7438E-02 | -1.7458E-02 | 1.2274E-02 | -3.0139E-03 | 4.0550E-04 | -3.2828E-05 | 1.5963E-06 | -4.2914E-08 | 4.8797E-10 |
| S12 | -3.6071E-02 | 8.3754E-03 | -1.2470E-03 | 6.7244E-05 | 9.1734E-06 | -2.1142E-06 | 1.7598E-07 | -6.8108E-09 | 9.9945E-11 |
Table 5
Table 6 gives the effective focal length f1 to f6 of each lens in embodiment 2, total effective focal length f of imaging optical system,
Effective pixel area pair of the object side S1 to imaging surface S15 of one lens E1 on the distance TTL and imaging surface S15 on optical axis
The long half ImgH of linea angulata.
| f1(mm) | 4.60 | f6(mm) | -2.40 |
| f2(mm) | -10.86 | f(mm) | 5.63 |
| f3(mm) | 50.14 | TTL(mm) | 6.72 |
| f4(mm) | -31.52 | ImgH(mm) | 4.79 |
| f5(mm) | 2.93 |
Table 6
Fig. 4 A shows chromatic curve on the axis of the imaging optical system of embodiment 2, indicates the light warp of different wave length
Deviateed by the converging focal point after system.Fig. 4 B shows the astigmatism curve of the imaging optical system of embodiment 2, indicates meridian picture
Face bending and sagittal image surface bending.Fig. 4 C shows the distortion curve of the imaging optical system of embodiment 2, indicates different image heights
The corresponding distortion sizes values in place.Fig. 4 D shows the ratio chromatism, curve of the imaging optical system of embodiment 2, indicates light
Via the deviation of the different image heights after system on imaging surface.According to Fig. 4 A to Fig. 4 D it is found that camera shooting given by embodiment 2
Optical system can be realized good image quality.
Embodiment 3
The imaging optical 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 imaging optical system of the embodiment of the present application 3.
As shown in figure 5, according to the imaging optical system of the application illustrative embodiments along optical axis by object side to image side according to
Sequence include: the first lens E1, diaphragm STO, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly
Mirror E6, optical filter E7 and imaging surface S15.
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 positive light coke, 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 concave surface.The
Five lens E5 have positive light coke, and object side S9 is convex surface, and image side surface S10 is convex surface.6th lens E6 has negative power,
Its object side S11 is concave surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.
Table 7 show the surface types of each lens of the imaging optical 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
As shown in Table 7, in embodiment 3, the object side of any one lens of the first lens E1 into the 6th lens E6
It is aspherical with image side surface.Table 8 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 3, wherein each non-
Spherical surface type can be limited by the formula (1) provided in above-described embodiment 1.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 2.8455E-04 | -1.8415E-03 | 7.0305E-03 | -1.1812E-02 | 1.1270E-02 | -6.4869E-03 | 2.2060E-03 | -4.0991E-04 | 3.1586E-05 |
| S2 | -3.8962E-02 | 3.1139E-02 | -1.2208E-02 | -3.9811E-03 | 8.7146E-03 | -5.8702E-03 | 2.1461E-03 | -4.2362E-04 | 3.5426E-05 |
| S3 | -6.3514E-02 | 5.1538E-02 | -3.5825E-03 | -3.6181E-02 | 4.7611E-02 | -3.3413E-02 | 1.4103E-02 | -3.3307E-03 | 3.3940E-04 |
| S4 | -3.1107E-02 | 3.0066E-02 | 1.8587E-02 | -6.6870E-02 | 9.3919E-02 | -8.1854E-02 | 4.5446E-02 | -1.4526E-02 | 2.0412E-03 |
| S5 | -3.6172E-02 | 2.1062E-03 | 1.3706E-02 | -8.9816E-02 | 1.7057E-01 | -1.7837E-01 | 1.0639E-01 | -3.4057E-02 | 4.5319E-03 |
| S6 | -7.5125E-02 | 3.1859E-02 | -2.9536E-02 | 1.1341E-02 | -3.7043E-03 | 9.7024E-04 | 3.1955E-04 | -2.8116E-04 | 4.7835E-05 |
| S7 | -1.1104E-01 | 6.7344E-02 | -9.5790E-02 | 1.2969E-01 | -1.2133E-01 | 7.0317E-02 | -2.3722E-02 | 4.2774E-03 | -3.2002E-04 |
| S8 | -8.2078E-02 | 3.1259E-02 | -2.5790E-02 | 2.5249E-02 | -1.7216E-02 | 7.3954E-03 | -1.9019E-03 | 2.6867E-04 | -1.6046E-05 |
| S9 | -1.5898E-02 | -4.9669E-03 | -3.4240E-03 | 3.2894E-03 | -1.2374E-03 | 3.0617E-04 | -6.8124E-05 | 1.1216E-05 | -7.8322E-07 |
| S10 | 4.3050E-02 | -2.2919E-02 | 5.0019E-03 | -5.9588E-04 | 1.8852E-04 | -3.7969E-05 | 6.5508E-07 | 4.7688E-07 | -3.3748E-08 |
| S11 | -1.5253E-02 | -1.5956E-02 | 8.5110E-03 | -1.5257E-03 | 1.1588E-04 | -1.0394E-07 | -6.0884E-07 | 4.0038E-08 | -8.6204E-10 |
| S12 | -6.8582E-02 | 1.7882E-02 | -4.0525E-03 | 7.2327E-04 | -9.7784E-05 | 9.4565E-06 | -6.0929E-07 | 2.3160E-08 | -3.8677E-10 |
Table 8
Table 9 gives the effective focal length f1 to f6 of each lens in embodiment 3, total effective focal length f of imaging optical system,
Effective pixel area pair of the object side S1 to imaging surface S15 of one lens E1 on the distance TTL and imaging surface S15 on optical axis
The long half ImgH of linea angulata.
| f1(mm) | 5.03 | f6(mm) | -2.93 |
| f2(mm) | -11.95 | f(mm) | 5.60 |
| f3(mm) | 105.32 | TTL(mm) | 6.70 |
| f4(mm) | 603.85 | ImgH(mm) | 4.79 |
| f5(mm) | 3.77 |
Table 9
Fig. 6 A shows chromatic curve on the axis of the imaging optical system of embodiment 3, indicates the light warp of different wave length
Deviateed by the converging focal point after system.Fig. 6 B shows the astigmatism curve of the imaging optical system of embodiment 3, indicates meridian picture
Face bending and sagittal image surface bending.Fig. 6 C shows the distortion curve of the imaging optical system of embodiment 3, indicates different image heights
The corresponding distortion sizes values in place.Fig. 6 D shows the ratio chromatism, curve of the imaging optical system of embodiment 3, indicates light
Via the deviation of the different image heights after system on imaging surface.According to Fig. 6 A to Fig. 6 D it is found that camera shooting given by embodiment 3
Optical system can be realized good image quality.
Embodiment 4
The imaging optical 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 imaging optical system of the embodiment of the present application 4.
As shown in fig. 7, according to the imaging optical system of the application illustrative embodiments along optical axis by object side to image side according to
Sequence include: the first lens E1, diaphragm STO, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly
Mirror E6, optical filter E7 and imaging surface S15.
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 positive light coke, 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 concave surface.The
Five lens E5 have positive light coke, and object side S9 is convex surface, and image side surface S10 is convex surface.6th lens E6 has negative power,
Its object side S11 is concave surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.
Table 10 shows surface type, radius of curvature, thickness, the material of each lens of the imaging optical system of embodiment 4
And circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 10
As shown in Table 10, in example 4, the object side of any one lens of the first lens E1 into the 6th lens E6
It is aspherical with image side surface.Table 11 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 4, wherein each
Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 2.4443E-04 | -1.5339E-03 | 6.0097E-03 | -1.0339E-02 | 1.0061E-02 | -5.9117E-03 | 2.0503E-03 | -3.8877E-04 | 3.0577E-05 |
| S2 | -4.1139E-02 | 3.5463E-02 | -1.7248E-02 | 7.0787E-04 | 5.0563E-03 | -3.7600E-03 | 1.3539E-03 | -2.5467E-04 | 2.0011E-05 |
| S3 | -6.4431E-02 | 5.2544E-02 | 2.2704E-03 | -5.5647E-02 | 7.5442E-02 | -5.5854E-02 | 2.4615E-02 | -5.9956E-03 | 6.2185E-04 |
| S4 | -3.1375E-02 | 3.3785E-02 | -1.1602E-03 | -1.2424E-02 | 3.7829E-03 | 8.2745E-03 | -7.8169E-03 | 2.5960E-03 | -2.6705E-04 |
| S5 | -3.6610E-02 | 3.7793E-03 | 1.9630E-03 | -5.7343E-02 | 1.1865E-01 | -1.2752E-01 | 7.6355E-02 | -2.4287E-02 | 3.1922E-03 |
| S6 | -7.3271E-02 | 2.1772E-02 | -8.2686E-03 | -1.7810E-02 | 2.1785E-02 | -1.2334E-02 | 4.1062E-03 | -7.5490E-04 | 5.6513E-05 |
| S7 | -1.0906E-01 | 5.1032E-02 | -5.7838E-02 | 7.4743E-02 | -7.0592E-02 | 4.1351E-02 | -1.3901E-02 | 2.4699E-03 | -1.8117E-04 |
| S8 | -8.0643E-02 | 2.1895E-02 | -8.9453E-03 | 7.1372E-03 | -4.8565E-03 | 2.1305E-03 | -5.6028E-04 | 8.2694E-05 | -5.3011E-06 |
| S9 | -1.2433E-02 | -1.2376E-02 | 6.8066E-03 | -5.2606E-03 | 3.2272E-03 | -1.1462E-03 | 2.1748E-04 | -1.9754E-05 | 6.3230E-07 |
| S10 | 4.5599E-02 | -2.7729E-02 | 1.0527E-02 | -4.0329E-03 | 1.4551E-03 | -3.2036E-04 | 3.7985E-05 | -2.2159E-06 | 4.7954E-08 |
| S11 | -2.1945E-02 | -1.0015E-02 | 6.6490E-03 | -1.2541E-03 | 1.0849E-04 | -3.1334E-06 | -1.7553E-07 | 1.5749E-08 | -3.4351E-10 |
| S12 | -7.8976E-02 | 2.4034E-02 | -6.3809E-03 | 1.2973E-03 | -1.9098E-04 | 1.9293E-05 | -1.2569E-06 | 4.7234E-08 | -7.7106E-10 |
Table 11
Table 12 give the effective focal length f1 to f6 of each lens in embodiment 4, imaging optical system total effective focal length f,
Effective pixel area of the object side S1 to imaging surface S15 of first lens E1 on the distance TTL and imaging surface S15 on optical axis
The half ImgH of diagonal line length.
Table 12
Fig. 8 A shows chromatic curve on the axis of the imaging optical system of embodiment 4, indicates the light warp of different wave length
Deviateed by the converging focal point after system.Fig. 8 B shows the astigmatism curve of the imaging optical system of embodiment 4, indicates meridian picture
Face bending and sagittal image surface bending.Fig. 8 C shows the distortion curve of the imaging optical system of embodiment 4, indicates different image heights
The corresponding distortion sizes values in place.Fig. 8 D shows the ratio chromatism, curve of the imaging optical system of embodiment 4, indicates light
Via the deviation of the different image heights after system on imaging surface.According to Fig. 8 A to Fig. 8 D it is found that camera shooting given by embodiment 4
Optical system can be realized good image quality.
Embodiment 5
The imaging optical 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 imaging optical system of the embodiment of the present application 5.
As shown in figure 9, according to the imaging optical system of the application illustrative embodiments along optical axis by object side to image side according to
Sequence include: the first lens E1, diaphragm STO, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly
Mirror E6, optical filter E7 and imaging surface S15.
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 positive light coke, and object side S5 is
Convex surface, image side surface S6 are convex 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 positive light coke, and object side S9 is convex surface, and image side surface S10 is convex surface.6th lens E6 has negative power,
Its object side S11 is concave surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.
Table 13 shows surface type, radius of curvature, thickness, the material of each lens of the imaging optical system of embodiment 5
And circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 13
As shown in Table 13, in embodiment 5, the object side of any one lens of the first lens E1 into the 6th lens E6
It is aspherical with image side surface.Table 14 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 5, wherein each
Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.1959E-04 | 5.4931E-05 | 4.4085E-03 | -9.5158E-03 | 9.9157E-03 | -5.9980E-03 | 2.1130E-03 | -4.0541E-04 | 3.2225E-05 |
| S2 | -2.2630E-02 | 2.5114E-02 | -1.1958E-02 | -3.4232E-03 | 8.5557E-03 | -5.7668E-03 | 2.0377E-03 | -3.8097E-04 | 2.9789E-05 |
| S3 | -5.8006E-02 | 5.8008E-02 | 1.8358E-03 | -7.4808E-02 | 1.1189E-01 | -8.9432E-02 | 4.2096E-02 | -1.0905E-02 | 1.2026E-03 |
| S4 | -3.7728E-02 | 3.8862E-02 | 3.2027E-02 | -1.2350E-01 | 1.8363E-01 | -1.6306E-01 | 8.9772E-02 | -2.8247E-02 | 3.9266E-03 |
| S5 | -3.1258E-02 | 1.2627E-02 | -2.4556E-02 | -8.8826E-03 | 7.6514E-02 | -1.1966E-01 | 9.0765E-02 | -3.4961E-02 | 5.4721E-03 |
| S6 | -4.5273E-02 | -6.4765E-03 | 2.8081E-02 | -6.4181E-02 | 6.7663E-02 | -4.3372E-02 | 1.6907E-02 | -3.5955E-03 | 3.1908E-04 |
| S7 | -7.0845E-02 | 2.5291E-02 | -3.3997E-02 | 3.6562E-02 | -2.9227E-02 | 1.3354E-02 | -2.5633E-03 | 3.8080E-05 | 2.5063E-05 |
| S8 | -6.0880E-02 | 2.1368E-02 | -1.9646E-02 | 1.7170E-02 | -1.0384E-02 | 4.0797E-03 | -9.5801E-04 | 1.2211E-04 | -6.5479E-06 |
| S9 | -2.6285E-02 | 2.4847E-03 | -7.1034E-03 | 4.8314E-03 | -2.1365E-03 | 6.9039E-04 | -1.5483E-04 | 2.0564E-05 | -1.1595E-06 |
| S10 | -2.6211E-02 | 9.1155E-03 | -7.3340E-03 | 3.3067E-03 | -8.4854E-04 | 1.6018E-04 | -2.2696E-05 | 1.9597E-06 | -7.2365E-08 |
| S11 | -3.9298E-02 | 1.3553E-03 | 2.5358E-03 | -4.3166E-04 | 2.0822E-07 | 6.7069E-06 | -7.7459E-07 | 3.7575E-08 | -7.0137E-10 |
| S12 | -3.7841E-02 | 1.2407E-02 | -3.1923E-03 | 5.8561E-04 | -7.7781E-05 | 7.2481E-06 | -4.4712E-07 | 1.6307E-08 | -2.6304E-10 |
Table 14
Table 15 give the effective focal length f1 to f6 of each lens in embodiment 5, imaging optical system total effective focal length f,
Effective pixel area of the object side S1 to imaging surface S15 of first lens E1 on the distance TTL and imaging surface S15 on optical axis
The half ImgH of diagonal line length.
| f1(mm) | 4.74 | f6(mm) | -2.28 |
| f2(mm) | -11.17 | f(mm) | 5.53 |
| f3(mm) | 32.55 | TTL(mm) | 6.70 |
| f4(mm) | -30.28 | ImgH(mm) | 4.75 |
| f5(mm) | 2.81 |
Table 15
Figure 10 A shows chromatic curve on the axis of the imaging optical system of embodiment 5, indicates the light warp of different wave length
Deviateed by the converging focal point after system.Figure 10 B shows the astigmatism curve of the imaging optical system of embodiment 5, indicates meridian
Curvature of the image and sagittal image surface bending.Figure 10 C shows the distortion curve of the imaging optical system of embodiment 5, indicates different
The corresponding distortion sizes values in image height place.Figure 10 D shows the ratio chromatism, curve of the imaging optical system of embodiment 5, table
Show light via the deviation of the different image heights after system on imaging surface.According to Figure 10 A to Figure 10 D it is found that embodiment 5 is given
Imaging optical system out can be realized good image quality.
Embodiment 6
The imaging optical 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 imaging optical system of the embodiment of the present application 6.
As shown in figure 11, according to the imaging optical system of the application illustrative embodiments along optical axis by object side to image side according to
Sequence include: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly
Mirror E6, optical filter E7 and imaging surface S15.
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 positive light coke, and object side S5 is
Convex surface, image side surface S6 are convex 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 positive light coke, and object side S9 is convex surface, and image side surface S10 is convex surface.6th lens E6 has negative power,
Its object side S11 is concave surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.
Table 16 shows surface type, radius of curvature, thickness, the material of each lens of the imaging optical system of embodiment 6
And circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 16
As shown in Table 16, in embodiment 6, the object side of any one lens of the first lens E1 into the 6th lens E6
It is aspherical with image side surface.Table 17 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 6, wherein each
Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.
Table 17
Table 18 give the effective focal length f1 to f6 of each lens in embodiment 6, imaging optical system total effective focal length f,
Effective pixel area of the object side S1 to imaging surface S15 of first lens E1 on the distance TTL and imaging surface S15 on optical axis
The half ImgH of diagonal line length.
| f1(mm) | 5.03 | f6(mm) | -2.37 |
| f2(mm) | -13.39 | f(mm) | 5.54 |
| f3(mm) | 28.23 | TTL(mm) | 6.73 |
| f4(mm) | -36.84 | ImgH(mm) | 4.75 |
| f5(mm) | 3.05 |
Table 18
Figure 12 A shows chromatic curve on the axis of the imaging optical system of embodiment 6, indicates the light warp of different wave length
Deviateed by the converging focal point after system.Figure 12 B shows the astigmatism curve of the imaging optical system of embodiment 6, indicates meridian
Curvature of the image and sagittal image surface bending.Figure 12 C shows the distortion curve of the imaging optical system of embodiment 6, indicates different
The corresponding distortion sizes values in image height place.Figure 12 D shows the ratio chromatism, curve of the imaging optical system of embodiment 6, table
Show light via the deviation of the different image heights after system on imaging surface.According to Figure 12 A to Figure 12 D it is found that embodiment 6 is given
Imaging optical system out can be realized good image quality.
Embodiment 7
The imaging optical 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 imaging optical system of the embodiment of the present application 7.
As shown in figure 13, according to the imaging optical system of the application illustrative embodiments along optical axis by object side to image side according to
Sequence include: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly
Mirror E6, optical filter E7 and imaging surface S15.
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 positive light coke, and object side S5 is
Convex surface, image side surface S6 are convex 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 positive light coke, and object side S9 is convex surface, and image side surface S10 is convex surface.6th lens E6 has negative power,
Its object side S11 is concave surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.
Table 19 shows surface type, radius of curvature, thickness, the material of each lens of the imaging optical system of embodiment 7
And circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 19
As shown in Table 19, in embodiment 7, the object side of any one lens of the first lens E1 into the 6th lens E6
It is aspherical with image side surface.Table 20 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 7, wherein each
Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.
Table 20
Table 21 give the effective focal length f1 to f6 of each lens in embodiment 7, imaging optical system total effective focal length f,
Effective pixel area of the object side S1 to imaging surface S15 of first lens E1 on the distance TTL and imaging surface S15 on optical axis
The half ImgH of diagonal line length.
| f1(mm) | 5.06 | f6(mm) | -2.42 |
| f2(mm) | -13.79 | f(mm) | 5.50 |
| f3(mm) | 28.04 | TTL(mm) | 6.70 |
| f4(mm) | -39.96 | ImgH(mm) | 4.75 |
| f5(mm) | 3.16 |
Table 21
Figure 14 A shows chromatic curve on the axis of the imaging optical system of embodiment 7, indicates the light warp of different wave length
Deviateed by the converging focal point after system.Figure 14 B shows the astigmatism curve of the imaging optical system of embodiment 7, indicates meridian
Curvature of the image and sagittal image surface bending.Figure 14 C shows the distortion curve of the imaging optical system of embodiment 7, indicates different
Distortion sizes values corresponding to field angle.Figure 14 D shows the ratio chromatism, curve of the imaging optical system of embodiment 7, table
Show light via the deviation of the different image heights after system on imaging surface.According to Figure 14 A to Figure 14 D it is found that embodiment 7 is given
Imaging optical system out can be realized good image quality.
Embodiment 8
The imaging optical 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 schematic diagram of the imaging optical system of the embodiment of the present application 8.
As shown in figure 15, according to the imaging optical system of the application illustrative embodiments along optical axis by object side to image side according to
Sequence include: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly
Mirror E6, optical filter E7 and imaging surface S15.
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 convex surface, and image side surface S8 is concave surface.The
Five lens E5 have positive light coke, and object side S9 is convex surface, and image side surface S10 is convex surface.6th lens E6 has negative power,
Its object side S11 is concave surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.
Table 22 shows surface type, radius of curvature, thickness, the material of each lens of the imaging optical system of embodiment 8
And circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 22
As shown in Table 22, in embodiment 8, the object side of any one lens of the first lens E1 into the 6th lens E6
It is aspherical with image side surface.Table 23 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 8, wherein each
Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 4.7743E-04 | 2.3864E-03 | -3.4031E-03 | 3.3098E-03 | -1.9609E-03 | 6.9680E-04 | -1.6323E-04 | 2.6585E-05 | -3.3161E-06 |
| S2 | -1.9753E-02 | 2.1802E-02 | -1.7495E-02 | 1.4738E-02 | -1.2321E-02 | 7.4936E-03 | -2.8634E-03 | 6.0723E-04 | -5.4691E-05 |
| S3 | -5.3755E-02 | 5.0974E-02 | -2.1512E-02 | 8.0293E-03 | -7.8392E-03 | 8.0507E-03 | -4.3557E-03 | 1.1797E-03 | -1.2701E-04 |
| S4 | -3.5519E-02 | 4.7268E-02 | -3.7671E-02 | 6.0648E-02 | -8.3671E-02 | 7.3585E-02 | -3.7685E-02 | 1.0355E-02 | -1.1526E-03 |
| S5 | -2.5235E-02 | 4.0995E-03 | -1.1843E-03 | -1.1831E-02 | 2.1359E-02 | -1.8391E-02 | 8.8409E-03 | -2.2723E-03 | 2.4695E-04 |
| S6 | -8.7117E-02 | 6.1185E-02 | -8.3678E-02 | 9.0415E-02 | -7.3315E-02 | 4.2295E-02 | -1.6419E-02 | 3.7947E-03 | -3.9101E-04 |
| S7 | -1.0300E-01 | 6.7252E-02 | -1.1947E-01 | 1.7267E-01 | -1.7206E-01 | 1.1155E-01 | -4.5002E-02 | 1.0195E-02 | -9.8828E-04 |
| S8 | -5.9950E-02 | 2.8359E-02 | -3.7625E-02 | 3.9499E-02 | -2.6620E-02 | 1.1260E-02 | -2.9207E-03 | 4.2484E-04 | -2.6291E-05 |
| S9 | -2.1949E-02 | 1.9926E-03 | -5.6128E-03 | 4.6594E-03 | -2.5959E-03 | 9.8518E-04 | -2.3712E-04 | 3.1322E-05 | -1.6839E-06 |
| S10 | -1.6699E-02 | -5.5300E-04 | 1.1342E-03 | -1.0255E-03 | 4.6622E-04 | -9.8038E-05 | 1.0423E-05 | -5.4592E-07 | 1.1071E-08 |
| S11 | -4.1572E-02 | 1.2360E-02 | -4.4245E-03 | 1.4142E-03 | -2.6222E-04 | 2.8151E-05 | -1.7626E-06 | 6.0225E-08 | -8.7260E-10 |
| S12 | -2.6863E-02 | 8.2350E-03 | -2.1921E-03 | 4.3476E-04 | -6.2544E-05 | 6.1421E-06 | -3.8615E-07 | 1.3888E-08 | -2.1506E-10 |
Table 23
Table 24 provides the effective focal length f1 to f6 of each lens in embodiment 8, total effective focal length f of imaging optical system,
Effective pixel area pair of the object side S1 to imaging surface S15 of one lens E1 on the distance TTL and imaging surface S15 on optical axis
The long half ImgH of linea angulata.
| f1(mm) | 4.84 | f6(mm) | -2.68 |
| f2(mm) | -13.58 | f(mm) | 5.54 |
| f3(mm) | -79.05 | TTL(mm) | 6.70 |
| f4(mm) | 40.84 | ImgH(mm) | 4.75 |
| f5(mm) | 3.88 |
Table 24
Figure 16 A shows chromatic curve on the axis of the imaging optical system of embodiment 8, indicates the light warp of different wave length
Deviateed by the converging focal point after system.Figure 16 B shows the astigmatism curve of the imaging optical system of embodiment 8, indicates meridian
Curvature of the image and sagittal image surface bending.Figure 16 C shows the distortion curve of the imaging optical system of embodiment 8, indicates different
The corresponding distortion sizes values in image height place.Figure 16 D shows the ratio chromatism, curve of the imaging optical system of embodiment 8, table
Show light via the deviation of the different image heights after system on imaging surface.According to Figure 16 A to Figure 16 D it is found that embodiment 8 is given
Imaging optical system out can be realized good image quality.
To sum up, embodiment 1 to embodiment 8 meets relationship shown in table 25 respectively.
| Conditional embodiment | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| f*TAN(HFOV)(mm) | 4.64 | 4.71 | 4.67 | 4.66 | 4.64 | 4.64 | 4.64 | 4.64 |
| TTL/ImgH | 1.41 | 1.40 | 1.40 | 1.41 | 1.41 | 1.42 | 1.41 | 1.41 |
| f1/f6 | -2.09 | -1.92 | -1.72 | -1.71 | -2.08 | -2.12 | -2.09 | -1.81 |
| f2/(f5*2) | -2.18 | -1.85 | -1.58 | -1.55 | -1.99 | -2.19 | -2.18 | -1.75 |
| |SAG52/CT5| | 1.35 | 1.17 | 1.28 | 1.27 | 1.35 | 1.36 | 1.35 | 1.17 |
| ET6/CT6 | 1.60 | 1.12 | 1.39 | 1.37 | 1.24 | 1.57 | 1.60 | 1.46 |
| R4/R1 | 1.81 | 1.46 | 1.47 | 1.62 | 1.52 | 1.71 | 1.81 | 1.77 |
| R3/R11 | -2.27 | -2.26 | -1.44 | -1.94 | -2.16 | -2.10 | -2.27 | -2.32 |
| T56/T23 | 0.99 | 0.77 | 1.14 | 1.11 | 0.80 | 0.92 | 0.99 | 1.03 |
| CT1/(CT2+CT3) | 1.21 | 1.30 | 1.22 | 1.18 | 1.36 | 1.21 | 1.21 | 1.18 |
| f/EPD | 1.69 | 1.70 | 1.69 | 1.69 | 1.70 | 1.70 | 1.69 | 1.69 |
Table 25
The application also provides a kind of photographic device, and electronics photosensitive element can be photosensitive coupling element (CCD) or complementation
Property matal-oxide semiconductor element (CMOS).Photographic device can be the independent picture pick-up device of such as digital camera, be also possible to
The photographing module being integrated on the mobile electronic devices such as mobile phone.The photographic device is equipped with camera optical 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 (22)
- It by object side to image side sequentially include: the first lens, the second lens, the third lens, along optical axis 1. imaging optical system Four lens, the 5th lens and the 6th lens,It is characterized in that,First lens have positive light coke, and object side is convex surface, and image side surface is concave surface；Second lens have negative power, and object side is convex surface, and image side surface is concave surface；The third lens have focal power；4th lens have focal power；5th lens have positive light coke；6th lens have negative power, and object side is concave surface；The object side of first lens to the imaging optical system distance TTL of the imaging surface on the optical axis with it is described The half ImgH of effective pixel area diagonal line length meets TTL/ImgH < 1.5 on the imaging surface of imaging optical system.
- 2. imaging optical system according to claim 1, which is characterized in that total effective focal length of the imaging optical system The maximum angle of half field-of view HFOV of f and the imaging optical system meets 4.6mm < f*tan (HFOV) < 7mm.
- 3. imaging optical system according to claim 1, which is characterized in that the effective focal length f1 of first lens and institute The effective focal length f6 for stating the 6th lens meets -2.5 < f1/f6 < -1.5.
- 4. imaging optical system according to claim 1, which is characterized in that the effective focal length f2 of second lens and institute The effective focal length f5 for stating the 5th lens meets -2.5 < f2/ (f5*2) < -1.5.
- 5. imaging optical 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 4 of the image side surface of diameter R1 and second lens meets 1 < R4/R1 < 2.
- 6. imaging optical system according to claim 1, which is characterized in that the curvature of the object side of second lens half The radius of curvature R 11 of the object side of diameter R3 and the 6th lens meets -2.5 < R3/R11 < -1.
- 7. imaging optical system according to claim 1, which is characterized in that first lens on the optical axis in Heart thickness CT1, second lens on the optical axis center thickness CT2 and the third lens on the optical axis in Heart thickness CT3 meets 1 < CT1/ (CT2+CT3) < 1.5.
- 8. imaging optical system according to claim 1, which is characterized in that the 5th lens and the 6th lens exist Spacing distance T56 and the spacing distance T23 of second lens and the third lens on the optical axis on the optical axis Meet 0.6 < T56/T23 < 1.2.
- 9. imaging optical system according to claim 1, which is characterized in that the image side surface and the light of the 5th lens Distance SAG52 and the 5th lens exist on the intersection point of axis to the axis on effective half bore vertex of the image side surface of the 5th lens Center thickness CT5 on the optical axis meets 1 < | SAG52/CT5 | < 1.5.
- 10. imaging optical system according to claim 1, which is characterized in that the edge thickness ET6 of the 6th lens with Center thickness CT6 of 6th lens on the optical axis meets 1 < ET6/CT6 < 2.
- 11. imaging optical system according to any one of claim 1 to 10, which is characterized in that the camera optical system Total effective focal length f of system and the Entry pupil diameters EPD of the imaging optical system meet f/EPD < 1.8.
- 12. imaging optical system, along optical axis by object side to image side sequentially include: the first lens, the second lens, the third lens, 4th lens, the 5th lens and the 6th lens,It is characterized in that,First lens have positive light coke, and object side is convex surface, and image side surface is concave surface；Second lens have negative power, and object side is convex surface, and image side surface is concave surface；The third lens have focal power；4th lens have focal power；5th lens have positive light coke；6th lens have negative power, and object side is concave surface；Effective half bore top of the image side surface of the image side surface of 5th lens and the intersection point of the optical axis to the 5th lens The center thickness CT5 of distance SAG52 and the 5th lens on the optical axis meets 1 < on the axis of point | SAG52/CT5 | < 1.5。
- 13. imaging optical system according to claim 12, which is characterized in that the effective focal length f1 of first lens with The effective focal length f6 of 6th lens meets -2.5 < f1/f6 < -1.5.
- 14. imaging optical system according to claim 12, which is characterized in that the effective focal length f2 of second lens with The effective focal length f5 of 5th lens meets -2.5 < f2/ (f5*2) < -1.5.
- 15. imaging optical system according to claim 12, which is characterized in that the curvature of the object side of first lens The radius of curvature R 4 of the image side surface of radius R1 and second lens meets 1 < R4/R1 < 2.
- 16. imaging optical system according to claim 12, which is characterized in that the curvature of the object side of second lens The radius of curvature R 11 of the object side of radius R3 and the 6th lens meets -2.5 < R3/R11 < -1.
- 17. imaging optical system according to claim 12, which is characterized in that first lens are on the optical axis Center thickness CT1, second lens on the optical axis center thickness CT2 and the third lens on the optical axis Center thickness CT3 meets 1 < CT1/ (CT2+CT3) < 1.5.
- 18. imaging optical system according to claim 12, which is characterized in that the 5th lens and the 6th lens In the spacing distance T56 and the spacing distance of second lens and the third lens on the optical axis on the optical axis T23 meets 0.6 < T56/T23 < 1.2.
- 19. imaging optical system according to claim 12, which is characterized in that the edge thickness ET6 of the 6th lens Meet 1 < ET6/CT6 < 2 with center thickness CT6 of the 6th lens on the optical axis.
- 20. imaging optical system described in any one of 7 to 19 according to claim 1, which is characterized in that first lens Object side is to distance TTL of the imaging surface on the optical axis of the imaging optical system and the imaging of the imaging optical system The half ImgH of effective pixel area diagonal line length meets TTL/ImgH < 1.5 on face.
- 21. imaging optical system described in any one of 2 to 19 according to claim 1, which is characterized in that the camera optical system Total effective focal length f of system and the maximum angle of half field-of view HFOV of the imaging optical system meet 4.6mm < f*tan (HFOV) < 7mm。
- 22. imaging optical system described in any one of 2 to 19 according to claim 1, which is characterized in that the camera optical system Total effective focal length f of system and the Entry pupil diameters EPD of the imaging optical system meet f/EPD < 1.8.
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