CN110488473B - Miniaturized large-aperture large-target-surface high-resolution zoom lens - Google Patents

Miniaturized large-aperture large-target-surface high-resolution zoom lens Download PDF

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CN110488473B
CN110488473B CN201810460097.2A CN201810460097A CN110488473B CN 110488473 B CN110488473 B CN 110488473B CN 201810460097 A CN201810460097 A CN 201810460097A CN 110488473 B CN110488473 B CN 110488473B
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lens
group
lens group
power
zoom
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CN110488473A (en
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谢晨
厉冰川
盛亚茗
尚洁阳
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Jiaxing Zhongrun Optical Technology Co Ltd
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Jiaxing Zhongrun Optical Technology Co Ltd
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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
    • G02B15/163—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 first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
    • G02B15/167—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 first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses
    • G02B15/173—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 first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged +-+
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration

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Abstract

A miniaturized large-aperture large-target-surface high-resolution zoom lens sequentially comprises the following components in the direction from an object side to an image side: the optical lens comprises a fixed lens group with positive focal power, an auxiliary moving lens group with negative focal power, an iris diaphragm, a main moving lens group with positive focal power, a compensation lens group with positive focal power and a sensor group, wherein: the auxiliary moving lens group and the main moving lens group do nonlinear motion, the compensation lens group is used for adjusting the deviation generated by the auxiliary moving lens group and the main moving lens group, and the sensor group synchronously carries out nonlinear motion to enable the optical system to image. The lens has wide zooming focal length range on the premise of ensuring miniaturization, large aperture, large target surface, high resolution and infrared confocal, and can well correct various aberrations in the whole zoom area.

Description

Miniaturized large-aperture large-target-surface high-resolution zoom lens
Technical Field
The invention relates to the technology in the field of optical devices, in particular to a high-resolution zoom lens which is small in size, large in aperture and suitable for 4/3 large target surface.
Background
The performance indexes of the existing security lens are uneven, and the requirements of high-end markets can not be met. Therefore, an ultra-high-definition zoom lens for security monitoring, which has the advantages of miniaturization, large aperture, large target surface, high resolution, infrared confocal and the like, is urgently needed by people.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the miniaturized large-aperture large-target-surface high-resolution zoom lens which has a wider zoom focal length range and can well correct various aberrations in the whole zoom domain on the premise of ensuring the miniaturization, large aperture, large target surface, high resolution and infrared confocal.
The invention is realized by the following technical scheme:
the present invention comprises the following components in order from an object side to an image side: the optical lens comprises a fixed lens group with positive focal power, an auxiliary moving lens group with negative focal power, an iris diaphragm, a main moving lens group with positive focal power, a compensation lens group with positive focal power and a sensor group, wherein: the auxiliary moving lens group and the main moving lens group do nonlinear motion, the compensation lens group is used for adjusting the deviation generated by the auxiliary moving lens group and the main moving lens group, and the sensor group synchronously carries out nonlinear motion to enable the optical system to image.
The fixed lens group includes: a first lens having a positive optical power, a second lens having a negative optical power, a third lens having a positive optical power, and a fourth lens having a positive optical power, wherein: the second lens and the third lens are glued to form a cemented lens with positive focal power, and two pieces of glass with high abbe number and low abbe number are glued to play an important role in correcting chromatic aberration. Meanwhile, the third lens uses glass with low dispersion characteristic, and the focal power is positive, so that the chromatic aberration of the optical system at the telephoto end is fully corrected, and an important positive effect on infrared confocal at the far-end is achieved. The FCD515 is used in the fourth lens, so that the optical system has a good infrared effect at the telephoto end, the blue-violet light at the telephoto end is within an acceptable range, and the phenomenon of purple fringe overflow is avoided.
Preferably, the first lens is a biconvex spherical lens, the second lens is a spherical lens with a convex front part and a concave back part, the third lens is a biconvex spherical lens, and the fourth lens is a spherical lens with a convex front part and a concave back part.
The auxiliary movable lens group comprises: the lens comprises a fifth lens with negative focal power, a sixth lens with negative focal power, a seventh lens with positive focal power and an eighth lens with negative focal power, wherein two continuous lenses with negative focal power greatly contribute to the correction of curvature of field and distortion.
Preferably, the fifth lens is a spherical lens which is convex in front and concave in back, the sixth lens is a biconcave spherical lens, the seventh lens is a biconvex spherical lens, and the eighth lens is an aspheric lens, so that spherical aberration and coma aberration of an edge field of view are effectively corrected.
The main moving lens group includes: a ninth lens having positive power, a tenth lens having positive power, an eleventh lens having negative power, a twelfth lens having positive power, a thirteenth lens having negative power, a fourteenth lens having positive power, a fifteenth lens having negative power, a sixteenth lens having positive power, and a seventeenth lens having negative power, wherein: the twelfth lens and the thirteenth lens are combined into a cemented lens with negative focal power, so that chromatic aberration at the wide-angle end of the zoom lens is effectively controlled, and the performance of the lens is ensured.
Preferably, the ninth, eleventh to thirteenth, fifteenth to seventeenth lenses are spherical lenses, and the tenth and fourteenth lenses are aspherical lenses, so that spherical aberration and coma aberration are effectively corrected.
The compensation lens group comprises: at least one biconvex aspheric lens with positive focal power is used as a compensation group, so that the optical lens can focus to a position with a short object distance even at a long focal end, and the long focal end has good optical performance at infinite distance and close distance.
The sensor group is specifically an image sensor with a charge coupled device image sensor CCD, and the sensor group is driven by a motor and changes position along with the increase of the multiplying power of a lens, so that the total length of the zoom lens is increased along with the increase of the multiplying power, the full length is variable, the aperture of a diaphragm is ensured to be small enough, the optical performance in small multiplying power is ensured, and the coma aberration and spherical aberration of small multiplying power are corrected.
The iris diaphragm adjusts the size of the aperture correspondingly along with the magnification of the lens.
The zoom lens further simultaneously satisfies the following conditions:
Figure GDA0003146865490000021
1.86＞Fnow> 1.8, wherein: fnowF number, Fno, at wide-angle end of the zoom lenstF number at the telephoto end of the zoom lens;
Figure GDA0003146865490000022
TTLt< 150, wherein: f. ofwIs the focal length at the wide-angle end of the zoom lens, ftFor the focal length at the telephoto end of the zoom lens, TTLwTTL is the total length of the wide-angle end of the zoom lenstThe total length of the telephoto end of the zoom lens;
Figure GDA0003146865490000023
wherein: h is the half-image height of the optical system.
d) HFOV >28 °, HFOV being the half field angle of the optical system in question.
The effective light passing diameter of the front surface of the first lens
Figure GDA0003146865490000024
And focal length f1Satisfies the following conditions:
Figure GDA0003146865490000025
Figure GDA0003146865490000026
the effective light passing diameter of the front surface of the second lens
Figure GDA0003146865490000027
And focal length f2Satisfies the following conditions:
Figure GDA0003146865490000028
Figure GDA0003146865490000029
refractive index Nd of the third lens3And Abbe number Vd3Satisfies the following conditions: 1.50 > Nd3，Vd3＞80；
The effective light passing diameter of the front surface of the fourth lens
Figure GDA0003146865490000031
And focal length f4Satisfies the following conditions:
Figure GDA0003146865490000032
Figure GDA0003146865490000033
the effective light passing diameter of the front surface of the sixth lens
Figure GDA0003146865490000034
And radius of curvature r61Satisfies the following conditions:
Figure GDA0003146865490000035
Figure GDA0003146865490000036
refractive index Nd of the seventh lens7And Abbe number Vd7Satisfies the following conditions: 1.99 > Nd7＞1.92，22＞Vd7＞15；
Refractive index Nd of the ninth lens9And Abbe number Vd9Satisfies the following conditions: 1.65 > Nd9＞1.43，Vd9＞60；
Refractive index Nd of the tenth lens10And Abbe number Vd10Satisfies the following conditions: nd (neodymium)101.497 and Vd10＝81.5；
The effective light passing diameter of the front surface of the eleventh lens
Figure GDA0003146865490000037
Radius of curvature r11aEffective light passing diameter of rear surface
Figure GDA0003146865490000038
And radius of curvature r11bSatisfies the following conditions:
Figure GDA0003146865490000039
the focal length f of the twelfth lens12And said thirteenth lens focal length f13And the focal length f of the combined lens after gluinggluSatisfies the following conditions: 1.57 > | f12/f13|＞1.25，
Figure GDA00031468654900000310
The fourteenth lens and the front surface radius of curvature r14aAnd radius of curvature r of the rear surface14bSatisfies the following conditions: 0.54 > | r14a/r14b|＞0.48；
Refractive index Nd of the fifteenth lens15And Abbe number Vd15Satisfies the following conditions: 1.95 > Nd15＞1.85，35＞Vd15＞30；
The sixteenth lens and the front surface effective light passing diameter
Figure GDA00031468654900000311
Radius of curvature r16aEffective light passing diameter of rear surface
Figure GDA00031468654900000312
And radius of curvature r16bSatisfies the following conditions:
Figure GDA00031468654900000313
refractive index Nd of the eighteenth lens18Abbe number Vd18Effective light passing diameter of rear surface
Figure GDA00031468654900000314
Satisfies the following conditions: nd (neodymium)18＝1.497，Vd18＝81.5，
Figure GDA00031468654900000315
The aperture of the variable diaphragm at the wide-angle end
Figure GDA00031468654900000316
Satisfy the requirement of
Figure GDA00031468654900000317
The aperture of the diaphragm S is controlled in a smaller range by controlling the farthest distance between the diaphragm S and the fixed lens group A, so that the diaphragm S can be used for commonly using existing products on the market, the cost is greatly reduced, meanwhile, the halation can be reduced in the middle magnification, and the optical system has good optical performance in the whole zooming process.
Technical effects
Compared with the prior art, the zoom lens system with four groups of linkage and four aspheric lenses and variable total length is utilized, the miniaturized large-aperture large-target-surface high-resolution zoom lens is provided, and the sensor is adapted to the large target surface of 4/3.
Drawings
Fig. 1 is a sectional view along the optical axis of the configuration of a zoom lens according to embodiment 1 of the present invention;
FIG. 2 is each aberration diagram with respect to the d-line of the zoom lens according to embodiment 1 of the present invention;
FIG. 3 is a sectional view along the optical axis of the constitution of a zoom lens according to embodiment 2 of the present invention;
FIG. 4 is each aberration diagram with respect to the d-line of the zoom lens according to embodiment 2 of the present invention;
FIG. 5 is a sectional view along the optical axis of the constitution of a zoom lens according to embodiment 3 of the present invention;
FIG. 6 is each aberration diagram with respect to the d-line of the zoom lens according to embodiment 3 of the present invention;
FIG. 7 is a schematic diagram of group movement;
in the figure: the optical lens system comprises a fixed lens group A, first to fourth lenses A1 to A4, an auxiliary moving lens group B, fifth to eighth lenses B1 to B4, an iris diaphragm S, a main moving lens group C, ninth to seventeenth lenses C1 to C9, a compensation lens group D, eighteenth and nineteenth lenses D1 and D2 and a sensor group E, wherein a to D are moving modes of the auxiliary moving lens group, the main moving lens group, the compensation lens group and the sensor group respectively.
Detailed Description
Example 1
As shown in fig. 1, the zoom lens according to the present embodiment is a zoom lens, which includes, in order along a light incident direction, a fixed lens group a having positive optical power, an auxiliary moving lens group B having negative optical power, an iris S, a main moving lens group C having positive optical power, a compensation lens group D having positive optical power, and a sensor group E, wherein: the fixed lens group A is always in a fixed state, the other groups are all moving groups, the auxiliary moving lens group B and the main moving lens group C do nonlinear motion according to a known curve, the compensation lens group D is a compensation group to adjust the deviation generated by the auxiliary moving lens group B and the main moving lens group C, and the sensor group E does nonlinear motion according to the known curve, so that the optical system can normally image.
The fixed lens group A has positive focal power and sequentially comprises a first lens A1, a second lens A2, a third lens A3 and a fourth lens A4 from the object side along the optical axis direction, wherein: the first lens is a biconvex spherical lens with positive focal power, the second lens is a front convex and rear concave spherical lens with negative focal power, the third lens is a biconvex spherical lens with positive focal power, and the fourth lens is a front convex and rear concave spherical lens with positive focal power, wherein: the second lens and the third lens are combined into a cemented lens with positive focal power.
The auxiliary moving lens group B has negative power, and includes, in order from the object side along the optical axis direction, a fifth lens B1, a sixth lens B2, a seventh lens B3, and an eighth lens B4, in which: the fifth lens is a spherical lens which is convex in front and concave in back and has negative focal power, the sixth lens is a double-concave spherical lens with negative focal power, the seventh lens is a double-convex spherical lens with positive focal power, and the eighth lens is an aspheric lens with negative focal power.
The main moving lens group C has positive power, and includes, in order from the object side along the optical axis direction, a ninth lens C1, a tenth lens C2, an eleventh lens C3, a twelfth lens C4, a thirteenth lens C5, a fourteenth lens C6, a fifteenth lens C7, a sixteenth lens C8, and a seventeenth lens C9, wherein: the ninth lens is a spherical lens having a positive refractive power, the tenth lens is an aspherical lens having a positive refractive power, the eleventh lens is a spherical lens having a negative refractive power, the twelfth lens is a spherical lens having a positive refractive power, the thirteenth lens is a spherical lens having a negative refractive power, the fourteenth lens is an aspherical lens having a positive refractive power, the fifteenth lens is a spherical lens having a negative refractive power, the sixteenth lens is a spherical lens having a positive refractive power, and the seventeenth lens is a spherical lens having a negative refractive power.
The twelfth lens and the thirteenth lens are combined into a cemented lens with negative focal power.
The compensation lens group D comprises: a piece of biconvex aspherical lens D1 having positive optical power.
The sensor group E comprises an infrared filter IRCF and an image sensor IMG with a charge coupled device image sensor CCD, and the position of the sensor group E is changed by the linkage of a motor and the increase of the lens magnification, so that the total length of the zoom lens is increased along with the increase of the magnification.
As shown in fig. 7a to 7d, the non-linear motion includes: the nonlinear motion of the auxiliary moving lens group, the nonlinear motion of the main moving lens group, the nonlinear motion of the compensation lens group and the nonlinear motion of the sensor group, wherein: the auxiliary moving lens group and the sensor group move in unique and synchronous directions, and the main moving lens group and the compensation lens group move in a synchronous S shape.
The non-linear motion of the auxiliary moving lens group is as follows: gradually moving away from the fixed lens group at a ratio of y to 0.02x + a during zooming from the wide-angle end, wherein: y is the distance from the auxiliary movable lens group to the last lens of the fixed lens group A, x is an integer of [0,1300], and a is the distance from the auxiliary movable lens group to the last lens of the fixed lens group at the wide-angle end.
The following are various numerical data of the zoom lens of the present embodiment.
Figure GDA0003146865490000051
Figure GDA0003146865490000061
Aspherical surface data:
Figure GDA0003146865490000062
Figure GDA0003146865490000071
zooming data:
air space Wide angle end Intermediate position Long coke end
Ds7 0.800 15.906 32.448
Ds15 38.150 31.067 1.000
Ds35 0.829 4.832 22.501
Ds37 3.466 3.147 12.235
WhereinDs7Refers to the air space between the s7 and s8 surfaces; ds15Refers to the air space between s15 and the diaphragm; ds35Refers to the air space between the s35 and s36 surfaces; ds37Refers to the air space between the surfaces of s37 and s 38.
The zoom lens of the embodiment further satisfies the following conditions:
Figure GDA0003146865490000072
Fnow＝1.83；
Figure GDA0003146865490000073
Figure GDA0003146865490000074
TTLt＝149.5；
Figure GDA0003146865490000075
HFOV＝29.5°；
Figure GDA0003146865490000076
Figure GDA0003146865490000077
|f2/fw|＝9.32；Nd3＝1.437，Vd3＝95.1；
Figure GDA0003146865490000078
|f4/fw|＝6.422；
Figure GDA0003146865490000079
Nd7＝1.9861，Vd7＝16.48；Nd9＝1.4370，Vd9＝95.1；Nd10＝1.497，Vd10＝81.5；
Figure GDA00031468654900000710
|f12/f13|＝1.547，
Figure GDA00031468654900000711
|r14a/r14b|＝0.525；Nd15＝1.9036，Vd15＝31.3；
Figure GDA00031468654900000712
Nd18＝1.497，Vd18＝81.5，
Figure GDA00031468654900000713
fig. 2 is each aberration diagram with respect to the d-line (λ 587.56nm) of the zoom lens of embodiment 1. S, M in the astigmatism diagram indicate aberrations corresponding to sagittal and meridional image planes, respectively.
Example 2
As shown in fig. 3, a cross-sectional view along the optical axis showing the configuration of the zoom lens system of embodiment 2.
Compared with embodiment 1, the compensation lens group D in this embodiment includes: a biconvex aspherical lens D1 having positive power and a front convex and rear concave spherical lens D2 improved the infrared confocal amount at the wide-angle end and also better corrected the aberration at the wide-angle end in example 2.
The following are various numerical data of the zoom lens of the present embodiment.
Figure GDA0003146865490000081
Figure GDA0003146865490000091
Aspherical surface data:
Figure GDA0003146865490000092
Figure GDA0003146865490000101
zooming data:
air space Wide angle end Intermediate position Long coke end
Ds7 0.800 14.071 32.113
Ds15 37.769 31.132 1.000
Ds35 0.573 6.584 28.867
Ds39 4.773 3.539 7.579
The zoom lens of the embodiment further satisfies the following conditions:
Figure GDA0003146865490000102
Fnow＝1.859；
Figure GDA0003146865490000103
Figure GDA0003146865490000104
TTLt＝149.5；
Figure GDA0003146865490000105
HFOV＝29.6°；
Figure GDA0003146865490000106
Figure GDA0003146865490000107
|f2/fw|＝9.76；Nd3＝1.437，Vd3＝95.1；
Figure GDA0003146865490000108
|f4/fw|＝6.615；
Figure GDA0003146865490000109
Nd7＝1.9459，Vd7＝17.9；Nd9＝1.4970，Vd9＝81.6；Nd10＝1.497，Vd10＝81.5；
Figure GDA00031468654900001010
|f12/f13|＝1.253，
Figure GDA00031468654900001011
|r14a/r14b|＝0.488；Nd15＝1.8636，Vd15＝32.4；
Figure GDA00031468654900001012
Nd18＝1.497，Vd18＝81.5，
Figure GDA00031468654900001013
fig. 4 is each aberration diagram with respect to the d-line (λ 587.56nm) of the zoom lens of embodiment 2. S, M in the astigmatism diagram indicate aberrations corresponding to sagittal and meridional image planes, respectively.
Example 3
As shown in fig. 5, a cross-sectional view along the optical axis showing the configuration of the zoom lens system according to embodiment 3.
Compared with embodiment 1, the compensation lens group D in this embodiment includes: a biconvex aspheric lens D1 with positive focal power and a group of cemented lens D2 to better correct the aberration at wide angle
The following are various numerical data of the zoom lens of the present embodiment.
Figure GDA00031468654900001014
Figure GDA0003146865490000111
Figure GDA0003146865490000121
Aspherical surface data:
Figure GDA0003146865490000122
zooming data:
Figure GDA0003146865490000123
Figure GDA0003146865490000131
the zoom lens of the embodiment further satisfies the following conditions:
Figure GDA0003146865490000132
Fnow＝1.81；
Figure GDA0003146865490000133
Figure GDA0003146865490000134
TTLt＝149.5；
Figure GDA0003146865490000135
HFOV＝29.5°；
Figure GDA0003146865490000136
Figure GDA0003146865490000137
|f2/fw|＝9.38；Nd3＝1.4969，Vd3＝81.6；
Figure GDA0003146865490000138
|f4/fw|＝6.584；
Figure GDA0003146865490000139
Nd7＝1.9228，Vd7＝20.88；Nd9＝1.6180，Vd9＝53.4；Nd10＝1.497，Vd10＝81.5；
Figure GDA00031468654900001310
|f12/f13|＝1.56，
Figure GDA00031468654900001311
|r14a/r14b|＝0.538；Nd15＝1.9036，Vd15＝31.3；
Figure GDA00031468654900001312
Nd18＝1.497，Vd18＝81.5，
Figure GDA00031468654900001313
fig. 6 is each aberration diagram with respect to the d-line (λ 587.56nm) of the zoom lens of embodiment 3. S, M in the astigmatism diagram indicate aberrations corresponding to sagittal and meridional image planes, respectively.
The foregoing embodiments may be modified in many different ways by those skilled in the art without departing from the spirit and scope of the invention, which is defined by the appended claims and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (14)

1. A miniaturized large-aperture large-target-surface high-resolution zoom lens is characterized by sequentially consisting of a fixed lens group with positive focal power, an auxiliary movable lens group with negative focal power, an iris diaphragm, a main movable lens group with positive focal power, a compensation lens group with positive focal power and a sensor group from the object side to the image side, wherein: the auxiliary moving lens group and the main moving lens group do nonlinear motion, the compensation lens group is used for adjusting the deviation generated by the auxiliary moving lens group and the main moving lens group, and the sensor group synchronously performs nonlinear motion to enable the zoom lens to image;
the fixed lens group includes: a first lens having a positive optical power, a second lens having a negative optical power, a third lens having a positive optical power, and a fourth lens having a positive optical power, wherein: the second lens and the third lens are combined into a cemented lens with positive focal power;
the auxiliary movable lens group comprises: a fifth lens having a negative power, a sixth lens having a negative power, a seventh lens having a positive power, and an eighth lens having a negative power;
the main moving lens group includes: a ninth lens having positive power, a tenth lens having positive power, an eleventh lens having negative power, a twelfth lens having positive power, a thirteenth lens having negative power, a fourteenth lens having positive power, a fifteenth lens having negative power, a sixteenth lens having positive power, and a seventeenth lens having negative power, wherein: the twelfth lens and the thirteenth lens are combined into a cemented lens with negative focal power;
the compensation lens group comprises: at least one biconvex aspherical lens having a positive optical power.
2. The zoom lens according to claim 1, wherein the first lens element is a biconvex spherical lens, the second lens element is a convex front concave spherical lens, the third lens element is a biconvex spherical lens, and the fourth lens element is a convex front concave spherical lens.
3. The zoom lens according to claim 1, wherein the fifth lens element is a spherical lens element with a convex front surface and a concave rear surface, the sixth lens element is a spherical lens element with a double concave surface, the seventh lens element is a spherical lens element with a double convex surface, and the eighth lens element is an aspherical lens element, thereby effectively correcting spherical aberration and coma aberration of the peripheral field of view.
4. The zoom lens according to claim 1, wherein the ninth, eleventh to thirteenth, fifteenth to seventeenth lenses are spherical lenses, and the tenth and fourteenth lenses are aspherical lenses, thereby effectively correcting spherical aberration and coma aberration.
5. The zoom lens as claimed in claim 1, wherein a front convex and a rear concave spherical lens or a set of cemented lenses is further disposed behind the aspheric lens.
6. The zoom lens as claimed in claim 1, wherein the sensor group is embodied as an image sensor with a CCD (charge coupled device) image sensor, and the sensor group is driven by a motor and changes position with an increase in lens magnification.
7. The zoom lens of claim 1, wherein the non-linear motion comprises: the nonlinear motion of the auxiliary moving lens group, the nonlinear motion of the main moving lens group, the nonlinear motion of the compensation lens group and the nonlinear motion of the sensor group, wherein: the auxiliary moving lens group and the sensor group move in unique and synchronous directions, and the main moving lens group and the compensation lens group move in a synchronous S shape.
8. The zoom lens according to claim 1 or 7, wherein the non-linear motion of the auxiliary moving lens group is: gradually moving away from the fixed lens group at a ratio of y to 0.02x + a during zooming from the wide-angle end, wherein: y is the distance from the auxiliary moving lens group to the last lens of the fixed lens group, x is an integer of [0,1300], and a is the distance from the auxiliary moving lens group to the last lens of the fixed lens group at the wide-angle end.
9. A zoom lens according to any one of claims 1 to 7, further satisfying the following conditions simultaneously:
a)
Figure FDA0003146865480000021
1.86＞Fnow> 1.8, wherein: fnowF number, Fno, at wide-angle end of the zoom lenstF number at the telephoto end of the zoom lens;
b)
Figure FDA0003146865480000022
TTLt< 150, wherein: f. ofwIs the focal length at the wide-angle end of the zoom lens, ftFor the focal length at the telephoto end of the zoom lens, TTLwTTL is the total length of the wide-angle end of the zoom lenstThe total length of the telephoto end of the zoom lens;
c)
Figure FDA0003146865480000023
wherein: h is the half-image height of the zoom lens;
d) the HFOV is more than 28 degrees, and the HFOV is the half angle of view of the zoom lens.
10. A zoom lens according to claim 1 or 2, wherein the front surface effective light transmission diameter of the first lens
Figure FDA0003146865480000024
And focal length f1Satisfies the following conditions:
Figure FDA0003146865480000025
14.3＞f1/fw> 13.8, wherein: f. ofwIs the focal length of the wide-angle end of the zoom lens; the effective light passing diameter of the front surface of the second lens
Figure FDA0003146865480000026
And focal length f2Satisfies the following conditions:
Figure FDA0003146865480000027
9.8＞|f2/fwthe | is more than 9.3; refractive index Nd of the third lens3And Abbe number Vd3Satisfies the following conditions: 1.50 > Nd3，Vd3Is more than 80; the effective light passing diameter of the front surface of the fourth lens
Figure FDA0003146865480000028
And focal length f4Satisfies the following conditions:
Figure FDA0003146865480000029
6.62＞|f4/fw|＞6.4。
11. a zoom lens according to claim 1 or 3, wherein the front surface effective light transmission diameter of the sixth lens element
Figure FDA00031468654800000210
And radius of curvature r61Satisfies the following conditions:
Figure FDA00031468654800000211
refractive index Nd of the seventh lens7And Abbe number Vd7Satisfies the following conditions: 1.99 > Nd7＞1.92，22＞Vd7＞15。
12. A zoom lens according to claim 1 or 4, wherein the refractive index Nd of the ninth lens is9And Abbe number Vd9Satisfies the following conditions: 1.65 > Nd9＞1.43，Vd9Is more than 60; refractive index Nd of the tenth lens10And Abbe number Vd10Satisfies the following conditions: nd (neodymium)101.497 and Vd1081.5; the effective light passing diameter of the front surface of the eleventh lens
Figure FDA0003146865480000031
Radius of curvature r11aEffective light passing diameter of rear surface
Figure FDA0003146865480000032
And radius of curvature r11bSatisfies the following conditions:
Figure FDA0003146865480000033
the focal length f of the twelfth lens12And said thirteenth lens focal length f13And the focal length f of the combined lens after gluinggluSatisfies the following conditions: 1.57 > | f12/f13|＞1.25，
Figure FDA0003146865480000034
The fourteenth lens element has a radius of curvature r of its front surface14aAnd radius of curvature r of the rear surface14bSatisfies the following conditions: 0.54 > | r14a/r14bI is more than 0.48; refractive index Nd of the fifteenth lens15And Abbe number Vd15Satisfies the following conditions: 1.95 > Nd15＞1.85，35＞Vd15Is more than 30; the effective light passing diameter of the front surface of the sixteenth lens
Figure FDA0003146865480000035
Radius of curvature r16aEffective light passing diameter of rear surface
Figure FDA0003146865480000036
And radius of curvature r16bSatisfies the following conditions:
Figure FDA0003146865480000037
Figure FDA0003146865480000038
13. a zoom lens according to claim 1 or 5, wherein the refractive index Nd of the biconvex aspherical lens18Abbe number Vd18Effective light passing diameter of rear surface
Figure FDA0003146865480000039
Satisfies the following conditions: nd (neodymium)18＝1.497，Vd18＝81.5，
Figure FDA00031468654800000310
14. A zoom lens according to claim 1, wherein the aperture of the variable iris at a wide angle end
Figure FDA00031468654800000311
Satisfy the requirement of
Figure FDA00031468654800000312
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