CN106918899B - The image-taking device of zoom lens and the application zoom lens - Google Patents
The image-taking device of zoom lens and the application zoom lens Download PDFInfo
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- CN106918899B CN106918899B CN201510997148.1A CN201510997148A CN106918899B CN 106918899 B CN106918899 B CN 106918899B CN 201510997148 A CN201510997148 A CN 201510997148A CN 106918899 B CN106918899 B CN 106918899B
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- zoom lens
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/177—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
Abstract
A kind of zoom lens, it successively includes the first eyeglass group with negative diopter, the second eyeglass group with positive diopter from object side to image side, with the third eyeglass group of negative diopter and imaging surface, and from object side to image side, the first eyeglass group successively includes having the first lens of positive diopter and with the second lens of negative diopter.First eyeglass of zoom lens group includes first lens with positive diopter and the second lens with negative diopter, which still has preferable visual angle in the case where miniaturization and can get higher image quality.In addition, the present invention also provides a kind of image-taking devices by above-mentioned zoom lens.
Description
Technical field
The present invention relates to the image-taking devices of a kind of zoom lens and the application zoom lens.
Background technique
With the light and shortization trend of electronic product, the optical lens in electronic product is also required to meet light and short
It is required that.Zoom lens generally includes multiple lens compositions, and the total length in existing zoom lens is big, is not able to satisfy short and small want
It asks.
Summary of the invention
In view of this, it is necessary to provide a kind of zoom lens that can solve the above problem.
In addition, there is a need to provide a kind of image-taking device using above-mentioned zoom lens.
A kind of zoom lens successively includes the first eyeglass group with negative diopter from object side to image side, has just
Second eyeglass group of diopter, with the third eyeglass group of negative diopter and imaging surface, from object side to image side first mirror
Piece group successively includes first lens with positive diopter and the second lens with negative diopter.
A kind of image-taking device using above-mentioned zoom lens.
First eyeglass of zoom lens group include have the first lens of positive diopter and with negative diopter
Two lens, the zoom lens still have preferable visual angle in the case where miniaturization and can get higher image quality.
Detailed description of the invention
Figure 1A, 1B and 1C are respectively the zoom lens of better embodiment of the present invention in wide-angle side, centre portion and look in the distance
The positional diagram of each camera lens when end.
Fig. 2A, 2B and 2C are the zoom lens of the embodiment of the present invention 1 respectively in the field of wide-angle side, centre portion and telescope end
Bent performance diagram.
Fig. 3 A, 3B and 3C are the zoom lens of the embodiment of the present invention 1 respectively in the abnormal of wide-angle side, centre portion and telescope end
Become performance diagram.
Fig. 4 A, 4B and 4C are times of the zoom lens in wide-angle side, centre portion and telescope end of the embodiment of the present invention 1 respectively
Rate color aberration characteristics curve graph.
Fig. 5 A, 5B and 5C are ball of the zoom lens in wide-angle side, centre portion and telescope end of the embodiment of the present invention 1 respectively
Surface aberration performance diagram.
Fig. 6 A, 6B and 6C are broom of the zoom lens in wide-angle side, centre portion and telescope end of the embodiment of the present invention 1 respectively
Star image difference performance diagram.
Fig. 7 A, 7B and 7C are the zoom lens of the embodiment of the present invention 2 respectively in the field of wide-angle side, centre portion and telescope end
Bent performance diagram.
Fig. 8 A, 8B and 8C are the zoom lens of the embodiment of the present invention 2 respectively in the abnormal of wide-angle side, centre portion and telescope end
Become performance diagram.
Fig. 9 A, 9B and 9C are times of the zoom lens in wide-angle side, centre portion and telescope end of the embodiment of the present invention 2 respectively
Rate color aberration characteristics curve graph.
Figure 10 A, 10B and 10C are the zoom lens of the embodiment of the present invention 2 respectively in wide-angle side, centre portion and telescope end
Spherical aberration performance diagram.
Figure 11 A, 11B and 11C are the zoom lens of the embodiment of the present invention 2 respectively in wide-angle side, centre portion and telescope end
Comet aberration performance diagram.
Figure 12 A, 12B and 12C are the zoom lens of the embodiment of the present invention 3 respectively in wide-angle side, centre portion and telescope end
Curvature of field performance diagram.
Figure 13 A, 13B and 13C are the zoom lens of the embodiment of the present invention 3 respectively in wide-angle side, centre portion and telescope end
Distortion performance curve graph.
Figure 14 A, 14B and 14C are the zoom lens of the embodiment of the present invention 3 respectively in wide-angle side, centre portion and telescope end
Ratio chromatism, performance diagram.
Figure 15 A, 15B and 15C are the zoom lens of the embodiment of the present invention 3 respectively in wide-angle side, centre portion and telescope end
Spherical aberration performance diagram.
Figure 16 A, 16B and 16C are the zoom lens of the embodiment of the present invention 3 respectively in wide-angle side, centre portion and telescope end
Comet aberration performance diagram.
Main element symbol description
Zoom lens 100
First eyeglass group 10
First lens 11
Second lens 12
Second eyeglass group 20
The third lens 21
4th lens 22
5th lens 23
Third eyeglass group 30
6th lens 31
Imaging surface 40
Aperture 50
Planar lens 60
First surface S11
Second surface S12
Third surface S21
4th surface S22
5th surface S31
6th surface S32
7th surface S41
8th surface S51
9th surface S52
Tenth surface S61
11st surface S62
12nd surface S71
13rd surface S72
The present invention that the following detailed description will be further explained with reference to the above drawings.
Specific embodiment
Also referring to Fig. 1~3, the zoom lens 100 of better embodiment of the present invention is used for the tool such as camera, mobile phone
Have in the image-taking device (not shown) for taking phase function.From object side to image side, which successively includes having negative diopter
The first eyeglass group 10, the second eyeglass group 20 with positive diopter, the third eyeglass group 30 with negative diopter and
Imaging surface 40.When the zoom lens 100 changes from wide-angle side to telescope end, the first eyeglass group 10, the second eyeglass group 20
And third eyeglass group 30 is mobile to object side direction, to achieve the effect that optical zoom.
From object side to image side, which successively includes having the first lens 11 of positive diopter and having negative
Second lens 12 of diopter.From object side to image side, the second eyeglass group 20 include the third lens 21 with positive diopter,
The 4th lens 22 with negative diopter and the 5th lens 23 with positive diopter, the 4th lens 22 and 23 glue of the 5th lens
It is combined to form a balsaming lens.The third eyeglass group 30 includes the 6th lens 31 with negative diopter.
The zoom lens 100 meets the following conditions: θwThe , ∣ of/TTL > 8 FG1/fwThe , ∣ of ∣ >=4 f1/f2∣≥8.5.Wherein, θwFor this
The field angle (Field of View, FOV) of the wide-angle side of zoom lens 100, TTL are from the object side of the first eyeglass group 10
To the total length (Total length) of imaging surface 40, FG1 is the focal length of the first eyeglass group 10, fwExist for zoom lens 100
Focal length when wide-angle side, f1It is the focal length of the first lens 11, f2It is the focal length of the second lens 12.Wherein, conditional θwThe He of/TTL > 8
∣FG1/fwThe certifiable zoom lens 100 in ∣ >=4 can still have biggish visual angle in the case where miniaturization；Tiao Jian Shi ∣ f1/f2∣
The enlargement ratio and amendment aberration of >=8.5 controllable zoom lens 100.
To further decrease the TTL of zoom lens 100 to realize miniaturization, the wide-angle of zoom lens 100 is further increased
To improve image quality, the zoom lens 100 also meets the following conditions: ∣ N for degree, zoom ratio etc.d4-Nd5 ∣>0.25,0.65<
∣f4/V4+f5/V5∣<0.75.Wherein, Nd4 be the refractive index of the 4th lens 22, Nd5 be the refractive index of the 5th lens 23, f4It is
The focal length of four lens 22, f5It is the focal length of the 5th lens 23, V4It is the abbe number of the 4th lens 22, V5It is the 5th lens 23
Abbe number.
The zoom lens 100 also meets the following conditions: 1.9 ≤ ∣ (FG2-MG3)/FG3 ∣≤2.3,0.28 ≤ ∣ FG2/fT
∣≤0.33.Wherein, FG2 is the focal length of the second eyeglass group 20, and MG3 is wide-angle of the third eyeglass group 30 by zoom lens 100
End is changed to amount of movement when telescope end, and FG3 is the focal length of third eyeglass group 30, fTIt is zoom lens 100 in telescope end
Focal length.
The material of at least one in the first lens 11 and the second lens 12 of first eyeglass group 10 is plastics.Institute
The material for stating at least one in the third lens 21, the 4th lens 22 and the 5th lens 23 of the second eyeglass group 20 is plastics.
The material of 6th lens 31 of third eyeglass group 30 is plastics.The plastics can be the resin or height conventionally used for lens
Molecular material etc..In one embodiment, the material of second lens 12, the third lens 21 and the 6th lens 31 is plastics,
The material of first lens 11, the 4th lens 22 and the 5th lens 23 is glass.Material is that the eyeglass of plastics can be effective
Reduce the weight of zoom lens 100.
Further referring to Fig. 1~3, the first lens 11 of the zoom lens 100, the second lens 12, the third lens 21,
The center of 4th lens 22, the 5th lens 23 and the 6th lens 31 is on the optical axis OA of optics darkening camera lens 100.Work as varifocal mirror
First 100 when by making zoom action between wide-angle side and telescope end, first eyeglass group 10, the second eyeglass group 20 and
Three eyeglass groups 30 can move relative to each other along optical axis OA, to adjust the focal length of zoom lens 100, and then change zoom
The multiplying power of camera lens simultaneously corrects aberration.
The zoom lens 100 further includes aperture 50, and the center of the aperture 50 is on the optical axis OA, and 50, the aperture
Between the first eyeglass group 10 and the second eyeglass group 20.The aperture 50 is used to limit the light beam by the first eyeglass group 10
Into the luminous flux of the second eyeglass group 20, and make more symmetrical by the light beam after aperture 50.The aperture 50 can with it is described
Optical axis of the second eyeglass group 20 together along the zoom lens 100 moves.The zoom lens 100 further includes being set to third mirror
Planar lens 60 between piece group 30 and imaging surface 40, the planar lens 60 are the protection glass of image acquisition unit.
The zoom lens 100 further includes optical filter (not shown), which is set to third eyeglass group 30
Between planar lens 60.The optical filter is used to filter out black light before the imaging of imaging surface 40 in light beam.The optical filter can
Think infrared fileter.
The image acquisition unit (not shown) with photoelectric converting function, the image capture are provided on the imaging surface 40
Unit is used to receive the light beam across optical filter.
First lens 11 have the first surface S11 towards the object side and second surface S12 towards image side.Described
Two lens 12 have the third surface S21 towards object side and the 4th surface S22 towards image side.First surface S11, the second table
At least one is non-spherical surface by face S12, third surface S21 and the 4th surface S22, i.e., in first eyeglass group 10 extremely
A rare non-spherical surface.
The third lens 21 have a 5th surface S31 towards object side and the 6th surface S32 towards image side, and described the
Four lens 22 have the 7th surface S41 towards object side, the 4th lens 22 and the 5th lens 23 surface glued together
For the 8th surface S51, the 5th lens 23 have the 9th surface S52 towards image side, the 5th surface S31, the 6th surface
At least one in S32, the 7th surface S41, the 8th surface S51 and the 9th surface S52 is non-spherical surface, i.e., described second mirror
At least one non-spherical surface in piece group 20.
6th lens 31 have the tenth surface S61 towards object side and the 11st surface S62 towards image side, this
At least one is non-spherical surface in ten surface S61 and the 11st surface S62, i.e., in third eyeglass group 30 at least
There is a non-spherical surface.The planar optics 60 have the 12nd surface S71 towards object side and with the tenth towards image side
Three surface S72.
The non-spherical surface can meet following mathematical expression:
Wherein, Z is coordinate value in the direction optical axis OA and using optical transmission direction as positive direction；C=1/R, R are benchmark spherical surfaces
Radius of curvature；H is to be orthogonal to the coordinate value of optical axis direction and be positive direction with top, and k is quadratic surface constant, E4、E6、E8、
E10For asphericity coefficient.The various parameter values or coefficient value of two aspherical mathematical expressions of each non-spherical lens can be set respectively
It is fixed, to determine the focal length of the non-spherical lens.
In the present embodiment, the first surface S11 is the concave surface towards object side, and the second surface S12 is towards image side
Convex surface, the third surface S21 be the convex surface towards object side, the 4th surface S22 be the concave surface towards image side.Described
Five surface S31 are the plane towards object side, and the 6th surface S32 is the plane towards image side.The 7th of 4th lens 22
Surface S41 is the convex surface towards object side, and the 5th lens 23 are biconvex lens, and the 9th surface S52 of the 5th lens 23 is face
To the convex surface of image side, the 8th surface S51 glued together of the 4th lens 22 and the 5th lens 23 is the 4th lens 22
The concave surface and the 5th lens 23 towards image side the convex surface towards object side.
Below by specific embodiment, the present invention will be further described.
In following embodiment, in zoom lens 100, the third surface S21 and the 4th surface S22, third of the second lens 12
The 5th surface S31 and the tenth surface S61 and the 11st surface S62 of the 6th surface S32 and the 6th lens 31 of lens 21 is non-
Spherical face, i.e., described second lens 12,31 aspherical lens of the third lens 21 and the 6th lens.D1 is the first eyeglass group 10
The distance between second eyeglass group 20, D2 are the distance between the second eyeglass group 20 and third eyeglass group 30, and D3 is
The distance between third eyeglass group 30 and planar lens 60.
Embodiment 1
In the present embodiment, focal length f of the zoom lens 100 in wide-angle sidewFocal length f for 4.3mm, in centre portionmFor
6.69mm, the focal length f in telescope endTFor 12.91mm.The range of the relative aperture (FNO) of zoom lens 100 be 2.2~
4.35。
In the present embodiment, radius of curvature R, thickness, refractive index and the Abbe number on the surface of each lens and aperture are referring to table one.
The quadratic surface constant k and asphericity coefficient E of each non-spherical surface4、E6、E8、E10Referring to table two.The numerical value of D1, D2 and D3 referring to
Table three.
Table one:
Table two:
Table three:
| Position | D1 | D2 | D3 |
| Wide-angle side (mm) | 0.8797 | 3.8734 | 0.0200 |
| Centre portion (mm) | 1.0107 | 3.3943 | 0.6362 |
| Telescope end (mm) | 1.1306 | 2.9837 | 1.2827 |
The zoom lens 100 of the present embodiment wide-angle side, centre portion and telescope end blue light (B, 0.4358 μm of wavelength),
Green light (G, 0.5461 μm of wavelength), feux rouges (R, 0.6563 μm of wavelength) curvature of field performance diagram refer to Fig. 2A, 2B and 2C, it is abnormal
Become performance diagram and refer to Fig. 3 A, 3B and 3C, ratio chromatism, performance diagram refers to Fig. 4 A, 4B and 4C, and spherical aberration is special
Linearity curve figure refers to Fig. 5 A, 5B and 5C, and comet aberration performance diagram refers to Fig. 6 A, 6B and 6C.Wherein, T indicates zoom
Camera lens 100 is for the aberration of tangent light beam (tangential rays), and S expression zoom lens 100 is for sagittal beam
The aberration of (sagittal rays).
By Fig. 2A it is found that the maximum curvature of field of the zoom lens 100 of the present embodiment in wide-angle side control (-
0.028mm, 0.029mm) in range.By Fig. 3 A it is found that maximum distortion amount of the zoom lens 100 of the present embodiment in wide-angle side
No more than 2.2%.By Fig. 4 A it is found that maximum ratio chromatism, of the zoom lens 100 of the present embodiment in wide-angle side is no more than 2.8
μm.By Fig. 5 A it is found that maximum spherical aberration of the zoom lens 100 of the present embodiment in wide-angle side control (0.028mm,
0.09mm) in range.By Fig. 6 A it is found that the comet aberration at each visual angle in wide-angle side of zoom lens 100 of the present embodiment is can
Receive neither serious.
By Fig. 2 B it is found that the maximum curvature of field of the zoom lens 100 of the present embodiment in centre portion controls
In (0.026mm, 0.041mm) range.By Fig. 3 B it is found that maximum of the zoom lens 100 of the present embodiment in centre portion is abnormal
Variable is no more than 0.71%.By Fig. 4 B it is found that maximum ratio chromatism, of the zoom lens 100 of the present embodiment in centre portion not
More than 1.2 μm.By Fig. 5 B it is found that maximum spherical aberration of the zoom lens 100 of the present embodiment in centre portion controls
In (0.005mm, 0.041mm) range.By Fig. 6 B it is found that each visual angle of the zoom lens 100 of the present embodiment in centre portion
Comet aberration be acceptable neither serious.
By Fig. 2 C it is found that the maximum curvature of field of the zoom lens 100 in telescope end is controlled in (- 0.02mm, 0.052mm) model
In enclosing.By Fig. 3 C it is found that maximum distortion amount of the zoom lens 100 in telescope end is no more than -2.1%.By Fig. 4 C it is found that zoom
Maximum ratio chromatism, of the camera lens 100 in telescope end is no more than 2.8 μm.By Fig. 5 C it is found that zoom lens 100 is in telescope end
Maximum spherical aberration controls in (- 0.021mm, 0.052mm) range.By Fig. 6 C it is found that zoom lens 100 is in telescope end
The comet aberration at each visual angle be acceptable neither serious.
Embodiment 2
In the present embodiment, focal length f of the zoom lens 100 in wide-angle sidewFocal length f for 4.3mm, in centre portionmFor
6.47mm, the focal length f in telescope endTFor 12.91mm.The range of the relative aperture (FNO) of zoom lens 100 be 2.2~
4.35。
In the present embodiment, radius of curvature R, thickness, refractive index and the Abbe number on the surface of each lens and aperture are referring to table four.
The quadratic surface constant k and asphericity coefficient E of each non-spherical surface4、E6、E8、E10Referring to table five.The numerical value of D1, D2 and D3 referring to
Table six.
Table four:
Table five:
| Surface | k | E4 | E6 | E8 | E10 |
| S21 | 0 | -1.663e-3 | -1.037e-2 | 1.256e-4 | -1.484e-5 |
| S22 | -4.20327 | 1.071e-2 | -1.149e-3 | 3.465e-4 | -5.202e-5 |
| S31 | -26.17223 | 9.117e-3 | 6.441e-4 | 2.204e-5 | -- |
| S32 | -1.96e+39 | 5.002e-3 | 7.101e-4 | -3.562e-6 | 1.877e-5 |
| S61 | 0.7385943 | -1.541e-2 | -2.502e-3 | 8.309e-4 | -9.279e-5 |
| S62 | -3.13e+39 | -8.769e-3 | 9.528e-4 | -3.224e-5 | -- |
Table six:
| Position | D1 | D2 | D3 |
| Wide-angle side (mm) | 0.8096 | 3.9219 | 0.0200 |
| Centre portion (mm) | 0.9661 | 3.4407 | 0.6246 |
| Telescope end (mm) | 1.1276 | 2.9724 | 1.3353 |
The zoom lens 100 of the present embodiment wide-angle side, centre portion and telescope end blue light (B, 0.4358 μm of wavelength),
Green light (G, 0.5461 μm of wavelength), feux rouges (R, 0.6563 μm of wavelength) curvature of field performance diagram refer to Fig. 7 A, 7B and 7C, it is abnormal
Become performance diagram and refer to Fig. 8 A, 8B and 8C, ratio chromatism, performance diagram refers to Fig. 9 A, 9B and 9C, and spherical aberration is special
Linearity curve figure 0A, 10B and 10C referring to Figure 1, comet aberration performance diagram 1A, 11B and 11C referring to Figure 1.Wherein, T table
Show zoom lens 100 for the aberration of tangent light beam (tangential rays), S indicates zoom lens 100 for sagittal beam
The aberration of (sagittal rays).
By Fig. 7 A it is found that the maximum curvature of field of the zoom lens 100 of the present embodiment in wide-angle side control (-
0.024mm, 0.022mm) in range.By Fig. 8 A it is found that maximum distortion amount of the zoom lens 100 of the present embodiment in wide-angle side
No more than -0.52%.By Fig. 9 A it is found that maximum ratio chromatism, of the zoom lens 100 of the present embodiment in wide-angle side is no more than
2.4μm.As can be seen from fig. 10A maximum spherical aberration of the zoom lens 100 of the present embodiment in wide-angle side controls
In (0.008mm, 0.022mm) range.By Figure 11 A it is found that the broom at each visual angle in wide-angle side of zoom lens 100 of the present embodiment
Star image difference is acceptable neither serious.
By Fig. 7 B it is found that the maximum curvature of field of the zoom lens 100 of the present embodiment in centre portion control (-
0.016mm, 0.038mm) in range.By Fig. 8 B it is found that maximum distortion of the zoom lens 100 of the present embodiment in centre portion
Amount is no more than -2.56%.By Fig. 9 B it is found that maximum ratio chromatism, of the zoom lens 100 of the present embodiment in centre portion not
More than 1.2 μm.By Figure 10 B it is found that maximum spherical aberration of the zoom lens 100 of the present embodiment in centre portion controls
In (0.006mm, 0.038mm) range.By Figure 11 B it is found that each visual angle of the zoom lens 100 of the present embodiment in centre portion
Comet aberration be acceptable neither serious.
By Fig. 7 C it is found that the maximum curvature of field of the zoom lens 100 in telescope end is controlled at (- 0.019mm, 0.045mm)
In range.By Fig. 8 C it is found that maximum distortion amount of the zoom lens 100 in telescope end is no more than -4.66%.By Fig. 9 C it is found that
Maximum ratio chromatism, of the zoom lens 100 in telescope end is no more than 2.9 μm.By Figure 10 C it is found that zoom lens 100 is being looked in the distance
Maximum spherical aberration when end controls in (- 0.019mm, 0.045mm) range.By Figure 11 C it is found that zoom lens 100 exists
The comet aberration at each visual angle when telescope end is acceptable neither serious.
Embodiment 3
In the present embodiment, focal length f of the zoom lens 100 in wide-angle sidewFocal length f for 4.24mm, in centre portionm
Focal length f for 6.27mm, in telescope endTFor 12.91mm.The range of the relative aperture (FNO) of zoom lens 100 be 2.2~
4.3。
In the present embodiment, radius of curvature R, thickness, refractive index and the Abbe number on the surface of each lens and aperture are referring to table seven.
The quadratic surface constant k and asphericity coefficient E of each non-spherical surface4、E6、E8、E10Referring to table eight.The numerical value of D1, D2 and D3 referring to
Table nine.
Table seven:
Table eight:
| Surface | k | E4 | E6 | E8 | E10 |
| S21 | 0 | -1.17e-2 | 3.617e-4 | 2.310e-4 | -2.297e-5 |
| S22 | -6.0870 | -0.009449 | 2.711e-4 | 3.729e-4 | -3.628e-5 |
| S31 | 1.5427 | 7.383e-2 | 1.383e-4 | 8.258e-4 | -1.265e-6 |
| S32 | -2.34e+39 | 5.888e-2 | 8.577e-4 | -8.893e-5 | 2.110e-5 |
| S61 | -4.3652 | -3.447e-2 | 4.830e-3 | -6.022e-4 | 2.797e-5 |
| S62 | -3.12e+39 | -9.120e-3 | 1.999e-3 | -2.110e-4 | 9.406e-6 |
Table nine:
| Position | D1 | D2 | D3 |
| Wide-angle side (mm) | 0.2508 | 4.0860 | 0.0200 |
| Centre portion (mm) | 0.5173 | 3.6108 | 0.5878 |
| Telescope end (mm) | 0.7290 | 3.1223 | 1.3227 |
The zoom lens 100 of the present embodiment wide-angle side, centre portion and telescope end blue light (B, 0.4358 μm of wavelength),
Green light (G, 0.5461 μm of wavelength), feux rouges (R, 0.6563 μm of wavelength) curvature of field performance diagram referring to Figure 1 2A, 12B and
12C, distortion performance curve graph 3A, 13B and 13C referring to Figure 1, ratio chromatism, performance diagram referring to Figure 1 4A, 14B and
14C, spherical aberration performance diagram 5A, 15B and 15C referring to Figure 1, comet aberration performance diagram 6A, 16B referring to Figure 1
And 16C.Wherein, T indicates zoom lens 100 for the aberration of tangent light beam (tangential rays), and S indicates zoom lens
100 for sagittal beam (sagittal rays) aberration.
By Figure 12 A it is found that the maximum curvature of field of the zoom lens 100 of the present embodiment in wide-angle side control (-
0.026mm, 0.015mm) in range.By Figure 13 A it is found that maximum distortion of the zoom lens 100 of the present embodiment in wide-angle side
Amount is no more than -2.8%.By Figure 14 A it is found that maximum ratio chromatism, of the zoom lens 100 of the present embodiment in wide-angle side does not surpass
Cross 1.8 μm.By Figure 15 A it is found that maximum spherical aberration of the zoom lens 100 of the present embodiment in wide-angle side controls
In (0.013mm, 0.015mm) range.By Figure 16 A it is found that the broom at each visual angle in wide-angle side of zoom lens 100 of the present embodiment
Star image difference is acceptable neither serious.
By Figure 12 B it is found that the maximum curvature of field of the zoom lens 100 of the present embodiment in centre portion control (-
0.011mm, 0.034mm) in range.By Figure 13 B it is found that maximum of the zoom lens 100 of the present embodiment in centre portion is abnormal
Variable is no more than -4.8%.By Figure 14 B it is found that maximum ratio chromatism, of the zoom lens 100 of the present embodiment in centre portion
No more than 1.0 μm.By Figure 15 B it is found that maximum spherical aberration of the zoom lens 100 of the present embodiment in centre portion controls
In (0.002mm, 0.033mm) range.By Figure 16 B it is found that each view of the zoom lens 100 of the present embodiment in centre portion
The comet aberration at angle is acceptable neither serious.
By Figure 12 C it is found that the maximum curvature of field of the zoom lens 100 in telescope end is controlled at (- 0.015mm, 0.034mm)
In range.By Figure 13 C it is found that maximum distortion amount of the zoom lens 100 in telescope end is no more than -6.6%.By Figure 14 C it is found that
Maximum ratio chromatism, of the zoom lens 100 in telescope end is no more than 2.9 μm.By Figure 15 C it is found that zoom lens 100 is being looked in the distance
Maximum spherical aberration when end controls in (- 0.014mm, 0.034mm) range.By Figure 16 C it is found that zoom lens 100 exists
The comet aberration at each visual angle when telescope end is acceptable neither serious.
First eyeglass group 10 of zoom lens 100 of the invention includes having the first lens 11 of positive diopter and having
Second lens 12 of negative diopter, and include at least one material in each eyeglass group of zoom lens 100 be plastics
Lens, can so mitigate the weight of zoom lens 100, and reduce cost.It is wrapped in each eyeglass group of zoom lens 100
At least one non-spherical surface is included, which can shorten the total of zoom lens 100 with the aberration in compensation optical system
Length.In addition, the condition that the zoom lens 100 is met makes it still can guarantee there is preferable view in the case where miniaturization
Angle and the higher image quality of acquisition.
In addition, for those of ordinary skill in the art, can make in accordance with the technical idea of the present invention other each
Kind changes and modifications, and all these changes and deformation all should belong to the protection scope of the claims in the present invention.
Claims (10)
1. a kind of zoom lens, from object side to image side successively by with negative diopter the first eyeglass group, there is positive dioptric
Second eyeglass group of degree is formed, the first eyeglass group with the third eyeglass group of negative diopter and imaging surface
Group, second eyeglass group and third eyeglass group can move relative to each other along optical axis, so that the zoom lens
Make zoom action between wide-angle side and telescope end, from the first eyeglass group described in object side to image side by including that there is positive diopter
The first lens and the second lens with negative diopter formed, it is characterised in that:
The zoom lens meets the following conditions: θwThe , ∣ of/TTL > 8 FG1/fw∣ >=4, wherein θwFor the wide-angle of the zoom lens
The field angle at end, TTL are the total length from the object side of first eyeglass group to imaging surface, and FG1 is the first eyeglass group
The focal length of group, fwFor focal length of the zoom lens in wide-angle side.
2. zoom lens as described in claim 1, it is characterised in that: ∣ f1/f2∣ >=8.5, wherein f1It is the coke of the first lens
Away from f2It is the focal length of the second lens.
3. zoom lens as described in claim 1, it is characterised in that: second eyeglass group successively arranges from object side to image side
Cloth is by the third lens with positive diopter, the 4th lens with negative diopter and with the 4th lens gluing with just
5th lens of diopter are formed.
4. zoom lens as claimed in claim 3, it is characterised in that: the zoom lens also meets the following conditions: ∣ Nd4-Nd5
∣ > 0.25,0.65 < ∣ f4/V4+f5/V5∣ < 0.75, wherein Nd4 be the refractive index of the 4th lens, Nd5 be the refraction of the 5th lens
Rate, f4It is the focal length of the 4th lens, f5It is the focal length of the 5th lens, V4It is the abbe number of the 4th lens, V5It is the 5th lens
Abbe number.
5. zoom lens as described in claim 1, it is characterised in that: the zoom lens also meets the following conditions: 1.9
≤ ∣ (FG2-MG3)/FG3 ∣≤2.3,0.28 ≤ ∣ FG2/fT∣≤0.33, wherein FG2 is the focal length of the second eyeglass group, MG3
Amount of movement when telescope end is changed to by the wide-angle side of zoom lens for third eyeglass group, FG3 is the coke of third eyeglass group
Away from fTFor focal length of the zoom lens in telescope end.
6. zoom lens as claimed in claim 3, it is characterised in that: third eyeglass group is by with negative diopter
Six lens are formed.
7. zoom lens as claimed in claim 6, it is characterised in that: the first lens of first eyeglass group and second are thoroughly
The material of at least one in mirror is plastics, in the third lens of second eyeglass group, the 4th lens and the 5th lens extremely
Rare one material is plastics, and the material of the 6th lens of third eyeglass group is plastics.
8. zoom lens as described in claim 1, it is characterised in that: at least one in first eyeglass group is aspherical
Surface, at least one non-spherical surface in second eyeglass group, at least one aspheric in third eyeglass group
Face surface.
9. zoom lens as described in claim 1, it is characterised in that: the zoom lens further includes being located at the first eyeglass group
Aperture between the second eyeglass group, the planar lens being set between third eyeglass group and imaging surface, be set to it is described
Optical filter between third eyeglass group and planar lens.
10. a kind of image-taking device using zoom lens described in any one of claim 1~9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510997148.1A CN106918899B (en) | 2015-12-28 | 2015-12-28 | The image-taking device of zoom lens and the application zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510997148.1A CN106918899B (en) | 2015-12-28 | 2015-12-28 | The image-taking device of zoom lens and the application zoom lens |
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| Publication Number | Publication Date |
|---|---|
| CN106918899A CN106918899A (en) | 2017-07-04 |
| CN106918899B true CN106918899B (en) | 2019-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510997148.1A Expired - Fee Related CN106918899B (en) | 2015-12-28 | 2015-12-28 | The image-taking device of zoom lens and the application zoom lens |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1841112A (en) * | 2005-03-29 | 2006-10-04 | 株式会社尼康 | Zoom lens system |
| CN101344636A (en) * | 2007-07-12 | 2009-01-14 | 奥林巴斯映像株式会社 | Three-unit zoom lens system and image pickup apparatus using the same |
| CN102411195A (en) * | 2010-09-22 | 2012-04-11 | 株式会社尼康 | Imaging Lens, Optical Device Equipped With The Imaging Lens And Method Used For Manufacturing The Imaging Lens |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4191416B2 (en) * | 2002-03-04 | 2008-12-03 | 日本電産コパル株式会社 | Zoom lens |
-
2015
- 2015-12-28 CN CN201510997148.1A patent/CN106918899B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1841112A (en) * | 2005-03-29 | 2006-10-04 | 株式会社尼康 | Zoom lens system |
| CN101344636A (en) * | 2007-07-12 | 2009-01-14 | 奥林巴斯映像株式会社 | Three-unit zoom lens system and image pickup apparatus using the same |
| CN102411195A (en) * | 2010-09-22 | 2012-04-11 | 株式会社尼康 | Imaging Lens, Optical Device Equipped With The Imaging Lens And Method Used For Manufacturing The Imaging Lens |
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| CN106918899A (en) | 2017-07-04 |
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