CN101021609A - Zoom lens and camera with zoom lens - Google Patents

Zoom lens and camera with zoom lens Download PDF

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Publication number
CN101021609A
CN101021609A CN 200710005794 CN200710005794A CN101021609A CN 101021609 A CN101021609 A CN 101021609A CN 200710005794 CN200710005794 CN 200710005794 CN 200710005794 A CN200710005794 A CN 200710005794A CN 101021609 A CN101021609 A CN 101021609A
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China
Prior art keywords
lens
combination
lens combination
face
constitutes
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CN 200710005794
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CN101021609B (en
Inventor
川上悦郎
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Casio Computer Co Ltd
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Casio Computer Co Ltd
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Abstract

The invention discloses a zoom lens and a camera using the zoom lens. On the object side of the zoom lens, a first lens assembly has negative refracting power as a whole; a second lens assembly has positive refracting power as a whole; a third lens assembly has negative refracting power as a whole. Zoom is realized by moving the first lens assembly and the second lens assembly in the direction of optical axis, or by moving the third lens assembly besides moving the first lens assembly and the second lens assembly. The entire large-aperture zoom lens with the zoom ratio of 3 consists of three lens assemblies, and the refracting powers of the lens assemblies on the object side are negative, positive and negative in turn. In this way, the full length of an optical system is reduced.

Description

Zoom lens and the video camera of having zoom lens
Technical field
The present invention relates generally to the zoom lens of employed high performance bright (the F number is less) in the small-sized image pickup device, and described small-sized image pickup device is used for being equipped on the CCD imageing sensors such as (charged coupled device) of digital still camera etc.
Background technology
In small-sized digital still camera, for the camera body attenuate is adopted the single focal lense that can reduce the size of optical axis direction as far as possible, in addition, also make great efforts to produce the creation that spy for example drives the lens of the distinctive dispositions far away of imageing sensor (tele-centric) such as the disclosed the sort of CCD of 2002-228922 communique (patent documentation 1), wait and make it commercialization.Yet, stronger to the hope of the lift-launch of the zoom lens of video camera etc.Current, even in digital still camera, the main flow of goods also becomes the video camera that zoom lens carry.
(patent documentation 1) spy opens the 2002-228922 communique
The video camera of a kind of small-sized zoom lens or small-sized subsidiary zoom can be provided in the present invention.
Summary of the invention
One of them of preferred forms of the present invention is, the 1st lens combination that has negative refracting power from object side in turn by integral body, integral body has the 2nd lens combination of positive refracting power, and whole the 3rd lens combination with negative refracting power constitutes, described the 1st lens combination is by 1st lens of configuration as negative lens, the 2nd lens as positive lens, and as these three pieces of lens of the 3rd lens of negative lens and constitute, described the 2nd lens combination is by 4th lens of configuration as positive lens, the 5th lens as positive lens, the 6th lens as negative lens, and as these 4 pieces of lens of the 7th lens of positive lens and constitute, described the 3rd lens combination constitutes by the 8th lens of configuration as negative lens, about becoming doubly, by move the position of described the 1st lens combination and described the 2nd lens combination along optical axis direction, perhaps by except moving described the 1st lens combination and described the 2nd lens combination, also moving the position of described the 3rd lens combination, and finish, the positive and negative formation of the optical power of each lens in the lens total system, be negative, just, negative, just, just, negative, just, negative such, between described the 4th lens and described the 5th lens to be border and symmetrical structure, the amount for optical power also becomes the distribution of summary to becoming equally.
In addition, another of preferred forms of the present invention is, the 1st lens combination that has negative refracting power from object side in turn by integral body, integral body has the 2nd lens combination of positive refracting power, and whole the 3rd lens combination with negative refracting power constitutes, described the 1st lens combination by configuration as negative lens and be the 1st lens of the meniscus shape that protrudes to object side, as positive lens and be the 2nd lens to the protruding meniscus shape of object side, and as these three pieces of lens of the 3rd lens of negative lens and constitute, described the 2nd lens combination is by 4th lens of configuration as positive lens, as negative lens and be the 5th lens to the protruding meniscus shape of object side, as the 6th lens of positive lens and constitute, described the 3rd lens combination constitutes by the 7th lens of configuration as negative lens, about becoming doubly, by move the position of described the 1st lens combination and described the 2nd lens combination along optical axis direction, perhaps finish by the position of except moving described the 1st lens combination and described the 2nd lens combination, also moving described the 3rd lens combination, the positive and negative formation of the optical power of each lens in the lens total system, be negative, just, negative, just, negative, just, negative such, with described the 4th lens is center and symmetrical structure, and the amount for optical power also becomes the distribution of summary to becoming equally.
Description of drawings
Fig. 1 is based on the lens pie graph of the 1st embodiment of zoom lens of the present invention.
Fig. 2 is all aberration diagrams of the lens of the 1st embodiment.
Fig. 3 is based on the lens pie graph of the 2nd embodiment of zoom lens of the present invention.
Fig. 4 is all aberration diagrams of the lens of the 2nd embodiment.
Fig. 5 is based on the lens pie graph of the 3rd embodiment of zoom lens of the present invention.
Fig. 6 is all aberration diagrams of the lens of the 3rd embodiment.
Fig. 7 is based on the lens pie graph of the 4th embodiment of zoom lens of the present invention.
Fig. 8 is all aberration diagrams of the lens of the 4th embodiment.
Fig. 9 is based on the lens pie graph of the 5th embodiment of zoom lens of the present invention.
Figure 10 is all aberration diagrams of the lens of the 5th embodiment.
Figure 11 is based on the lens pie graph of the 6th embodiment of zoom lens of the present invention.
Figure 12 is all aberration diagrams of the lens of the 6th embodiment.
Figure 13 is based on the lens pie graph of the 7th embodiment of zoom lens of the present invention.
Figure 14 is all aberration diagrams of the lens of the 7th embodiment.
Figure 15 is based on the lens pie graph of the 8th embodiment of zoom lens of the present invention.
Figure 16 is all aberration diagrams of the lens of the 8th embodiment.
Figure 17 is based on the lens pie graph of the 9th embodiment of zoom lens of the present invention.
Figure 18 is all aberration diagrams of the lens of the 9th embodiment.
Figure 19 is based on the lens pie graph of the 10th embodiment of zoom lens of the present invention.
Figure 20 is all aberration diagrams of the lens of the 10th embodiment.
Figure 21 is based on the lens pie graph of the 11st embodiment of zoom lens of the present invention.
Figure 22 is all aberration diagrams of the lens of the 11st embodiment.
Figure 23 is based on the lens pie graph of the 12nd embodiment of zoom lens of the present invention.
Figure 24 is all aberration diagrams of the lens of the 12nd embodiment.
Figure 25 is based on the lens pie graph of the 13rd embodiment of zoom lens of the present invention.
Figure 26 is all aberration diagrams of the lens of the 13rd embodiment.
Figure 27 is based on the lens pie graph of the 14th embodiment of zoom lens of the present invention.
Figure 28 is all aberration diagrams of the lens of the 14th embodiment.
Figure 29 is based on the lens pie graph of the 15th embodiment of zoom lens of the present invention.
Figure 30 is all aberration diagrams of the lens of the 15th embodiment.
Figure 31 is based on the lens pie graph of the 16th embodiment of zoom lens of the present invention.
Figure 32 is all aberration diagrams of the lens of the 16th embodiment.
Figure 33 is based on the lens pie graph of the 17th embodiment of zoom lens of the present invention.
Figure 34 is all aberration diagrams of the lens of the 17th embodiment.
Figure 35 is based on the lens pie graph of the 18th embodiment of zoom lens of the present invention.
Figure 36 is all aberration diagrams of the lens of the 18th embodiment.
Figure 37 is based on the lens pie graph of the 19th embodiment of zoom lens of the present invention.
Figure 38 is all aberration diagrams of the lens of the 19th embodiment.
Figure 39 is based on the lens pie graph of the 20th embodiment of zoom lens of the present invention.
Figure 40 is all aberration diagrams of the lens of the 20th embodiment.
Figure 41 is based on the lens pie graph of the 21st embodiment of zoom lens of the present invention.
Figure 42 is all aberration diagrams of the lens of the 21st embodiment.
Figure 43 is based on the lens pie graph of the 22nd embodiment of zoom lens of the present invention.
Figure 44 is all aberration diagrams of the lens of the 22nd embodiment.
Figure 45 is based on the lens pie graph of the 23rd embodiment of zoom lens of the present invention.
Figure 46 is all aberration diagrams of the lens of the 23rd embodiment.
Figure 47 is based on the lens pie graph of the 24th embodiment of zoom lens of the present invention.
Figure 48 is all aberration diagrams of the lens of the 4th embodiment.
Embodiment
Below, the concrete numerical value embodiment about related to the present invention describes as embodiment 1～embodiment 16.In following embodiment 1 to embodiment 16, constitute by the 1st lens combination LG1, the 2nd lens combination LG2 and the 3rd lens combination LG3 in turn from object side.Described the 1st lens combination LG1 integral body has negative refracting power, and constitute: promptly as the 1st lens L1 of the lens with negative refracting power (following be negative lens) (with the face of the object side of the 1st lens L1 as the 1st, with the image planes side as the 2nd face) by disposing following lens; As the 2nd lens L2 of the lens with positive refracting power (following for positive lens) (with the object side of the 2nd lens L2 as the 3rd, will as the side as the 4th face); And as the 3rd lens L3 of negative lens (with the object side of the 3rd lens L3 as the 5th, will as the side as the 6th face).Described the 2nd lens combination LG2 integral body has positive refracting power, and constitute by disposing following lens: promptly as the 4th lens L4 of positive lens (with the object side of the 4th lens L4 as the 7th, will be as the side as the 8th face), as the 5th lens L5 of positive lens (with the object side of the 5th lens L5 as the 9th, will as the side as the 10th face); As the 6th lens L6 of negative lens (though with the object side of the 6th lens L6 as the 11st, will be as the side as the 12nd, but under the situation that the 5th lens L5 and the 6th lens L6 gummed is constituted, only represent 11 face numbering with parantheses, be under the situation of resin face of compound non-spherical lens at the 11st and the 12nd face in addition, with the boundary surface of resin and air as the HB face); And as the 7th lens of positive lens (with the object side of the 7th lens L7 as the 13rd, will as the side as the 14th face).Described the 3rd lens combination LG3 integral body has negative refracting power, and constitutes as the 8th lens L8 of negative lens (with the face of the object side of the 8th lens L8 as the 15th, will as the side as the 16th face) by configuration.In addition; between the 16th of the image planes side of described the 8th lens L8 and the image planes; dispose across the airspace as quartzy light filter LPF (with the object side of quartzy light light filter LPF as the 17th; will be as the side as the 18th face) and as the sealing cover glass CG of the protection usefulness of the camera part of CCD (with the object side of sealing cover glass CG as the 19th, will as the side as the 20th face).Usually except adopting imageing sensor such as CCD, the ending of necessary infrared light, tackle by on the one side of the plane of refraction of described quartzy light light filter LPF, implementing infrared external reflection plated film (coating), in this diagram not.About becoming doubly, by the position of described the 1st lens combination LG1 and described the 2nd lens combination LG2 is moved along optical axis direction, perhaps except will also the position of the 3rd lens combination LG3 being moved and be finished described the 1st lens combination LG1 and described the 2nd lens combination LG2.In addition, in each embodiment, about with the corresponding focal adjustments of the object of limited distance, can constitute by the position of described the 1st lens combination LG1 or described the 3rd lens combination LG3 is moved along optical axis direction, but be not limited to these methods.
In addition, for employed aspheric surface among each embodiment, as is generally known like that, with optical axis direction as the Z axle, under the situation of direction that will be vertical as Y-axis with optical axis, will be by the aspheric surface formula
Z = ( Y 2 / R ) / [ 1 + { 1 - ( 1 + K ) ( Y / R ) 2 } ]
+ A · Y 4 + B · Y 6 + C · Y 8 + D · Y 10 + · · · ·
The curve of being given rotation and obtain curved surface around optical axis, and, by giving paraxial radius of curvature R, constant of the cone K, high order aspheric surface coefficient A, B, C, D and define shape.In addition, " E numeral back to back " expression " 10 tired taking advantage of " in the mark of the asphericity coefficient of the constant of the cone in the table and high order with it.For example, " E-04 " expression 10 -4, this numerical value is attached on its numerical value before.
About the related zoom lens of present embodiment, wherein, from object side, the 1st lens combination that has negative refracting power in turn by integral body, integral body has the 2nd lens combination of positive refracting power, and whole the 3rd lens combination with negative refracting power constitutes, about becoming doubly, by the position of described the 1st lens combination and described the 2nd lens combination is moved along optical axis direction, perhaps except moving described the 1st lens combination and described the 2nd lens combination, also move described the 3rd lens combination, constitute therefrom, the optical power that is had about described the 1st lens combination, satisfy following conditional (1), size about the lens total system satisfies following conditional (2), in addition, the optical power that is had about described the 3rd lens combination satisfies following conditional (3):
(1)-0.8≤f w/f 1≤-0.45
(2)4.5≤TL w/f w≤7.5
(3)-0.55≤f w/f m≤0
Wherein:
f w: the system-wide synthetic focal length of the lens in the wide-angle side;
f 1: the synthetic focal length of the 1st lens combination;
f m: the synthetic focal length of the 3rd lens combination;
TL w: the object plane side of the 1st lens of the 1st lens combination from constitute wide-angle side is to the distance (wherein, the parallel plane glass part is the air scaled distance) of image planes.
In addition, in described zoom lens, described the 1st lens combination, by constituting from the following in turn lens of object side: i.e. the 1st lens, it has the lens (hereinafter referred to as negative lens) of negative refracting power; The 2nd lens, it has positive refracting power (hereinafter referred to as positive lens); The 3rd lens, it is a negative lens, the optical power that is had about described the 2nd lens, satisfy following conditional (4), about the dispersing characteristic in each lens that is allocated in described the 1st lens combination, satisfy following conditional (5), in addition, satisfy following conditional (6) about the refractive index of described the 2nd lens:
(4)0.22≤f w/f 2≤0.55
(5)15≤(υ 1+υ 3)/2-υ 2
(6)1.65≤n 2
Wherein:
f 2: the focal length that constitutes the 2nd lens of the 1st lens combination;
υ 1: the Abbe number that constitutes the 1st lens of the 1st lens combination;
υ 2: the Abbe number that constitutes the 2nd lens of the 1st lens combination;
υ 3: the Abbe number that constitutes the 3rd lens of the 1st lens combination;
n 2: the 2nd lens of 1 lens combination of formation are to the refractive index of d line.
In addition, in described zoom lens, described the 1st lens that constitute described the 1st lens combination are non-spherical lenses, shape about the face of described picture side satisfies following conditional (7), in addition, the relative characteristic with the shape of the face of the object side of described the 2nd lens that constitute described the 1st lens combination satisfies following conditional (8):
(7)0.4≤f w/r 2≤1.4
(8)0≤r 2/r 3≤1.5
Wherein:
r 2: the radius-of-curvature of face of picture side that constitutes the 1st lens of the 1st lens combination;
r 3: the radius-of-curvature of face of object side that constitutes the 2nd lens of the 1st lens combination.
In addition, in above-mentioned zoom lens, described the 2nd lens combination, by dispose the 4th lens in turn from object side as positive lens, the 5th lens as positive lens, the 6th lens as negative lens, and as the 7th lens of positive lens and constitute, the positive synthesizing optical ability that is had about described the 4th lens and described the 5th lens satisfies following conditional (9), the negative optical power that is had about the 6th lens, satisfy following conditional (10), about being allocated in described the 4th lens that dispose in turn from object side in described the 2nd lens combination, the dispersing characteristic of described the 5th lens and described the 6th lens satisfies following conditional (11), in addition, same in the relation of the refractive index that these each lens had, satisfy following conditional (12):
(9)0.5≤f w/f 4、5≤1.5
(10)-1.5≤f w/f 6≤-0.25
(11)28≤(υ 4+υ 5)/2-υ 6
(12)(n 4+n 5)/2-n 6≤-0.24
Wherein,
f 4,5: constitute the 4th lens of the 2nd lens combination and the synthetic focal length of the 5th lens;
f 6: the focal length (wherein, being the synthetic focal length of parent spherical lens and resin part under the 6th lens constitute the situation of compound non-spherical lens) that constitutes the 6th lens of the 2nd lens combination;
υ 4: the Abbe number that constitutes the 4th lens of the 2nd lens combination;
υ 5: the Abbe number that constitutes the 5th lens of the 2nd lens combination;
υ 6: the Abbe number (wherein, constituting under the situation of compound non-spherical lens at the 6th lens is the synthetic focal length of the glass material (nitre material) of parent spherical lens) that constitutes the 6th lens of the 2nd lens combination.
n 4: constitute the refractive index of the 4th lens of the 2nd lens combination to the d line;
n 5: constitute the refractive index of the 5th lens of the 2nd lens combination to the d line;
n 6: constitute the refractive index of the 6th lens of the 2nd lens combination to the d line;
In addition, in above-mentioned zoom lens, constitute in the plane of refraction of each lens of described the 2nd lens combination, having a face at least is aspherical shape, shape about the face of the object side of described the 4th lens, satisfy following conditional (13), in addition, satisfy following conditional (14) about the shape as the face of side of described the 6th lens:
(13)0.2≤f w/r 7≤1.0
(14)0.4≤f w/r 12≤1.6
Wherein:
r 7: the radius-of-curvature of face of object side that constitutes the 4th lens of the 2nd lens combination;
r 12: the radius-of-curvature (wherein, being under the situation of resin lens face of compound lens at the face as side of the 6th lens, is the radius-of-curvature of the boundary surface between resin and the air) of face of picture side that constitutes the 6th lens of the 2nd lens combination.
In addition, in above-mentioned zoom lens, described the 3rd lens combination is made of the 8th lens as negative lens, and the shape about the face of the object side of described the 8th lens satisfies following conditional (15):
(15)-2.0≤f w/r 15≤0.2
Wherein:
r 15: the radius-of-curvature of face of object side that constitutes the 8th lens of the 3rd lens combination.
(embodiment 1)
Table 1 shows numerical example with regard to the 1st embodiment of zoom lens of the present invention.Exception, Fig. 1 is its lens pie graph, Fig. 2 is its all aberration diagram.In table and the drawing, f represents the focal length (following expression from the left side to the wide-angle side, the value of intermediate field, telescope end) of lens total system, F NoExpression F number (number), 2 ω represent the whole visual angle of lens.In addition, R represents radius-of-curvature, and D represents lens thickness or lens at interval, υ dThe Abbe number of expression d line.D in the spherical aberration diagram in all aberration diagrams, g, C represent the aberration curve in separately the wavelength respectively.In addition, S.C. represents sine condition.S among the astigmatism figure represents the sagitta of arc (sagital) direction, and M represents warp direction (meridional: メ リ デ ィ ォ Na Le).
[table 1]
f＝6.84～11.56～19.50
F＝1.96～2.66～3.74
2ω＝69.23～43.08～26.17
The face numbering R D N d ν d
1 19.150 0.72 1.80610 40.73
2 6.645 3.07 - -
3 10.387 1.67 1.84666 23.78
4 24.486 1.83 - -
5 -10.585 0.60 1.63246 63.80
6 -96.268 13.56～6.08～1.15 - -
7 14.518 1.57 1.63246 63.80
8 -49.735 0.10 - -
9 5.882 2.25 1.49700 81.61
10 52.012 1.76 - -
11 214.910 0.40 2.13120 24.07
12 7.481 0.19 1.51576 52.63
HB 10.449 2.24 - -
13 16.417 1.70 1.62588 35.74
14 -12.343 5.63～6.35～9.82 - -
15 -6.396 0.82 1.52470 0.00
16 -10.024 0.57～3.85～6.50 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 64.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd HB face
K＝0.00000F+00 K＝0.00000E+00 K＝0.00000E+00
A＝9.19296E-04 A＝8.11291E-04 A＝1.68001E-03
B＝-4.56716E-05 B＝-3.72117E-05 B＝1.68591E-05
C＝1.31412E-06 C＝-2.90672E-07 C＝1.09717E-06
D＝-1.73534E-08 D＝5.16007E-08
E＝9.03438E-11 E＝-8.31094E-10
The 15th
K＝0.00000E+00
A＝1.95798E-04
B＝4.34601E-05
C＝-5.07535E-06
D＝3.28041E-07
E＝-7.45431E-09
(embodiment 2)
Table 2 shows numerical example with regard to the 2nd embodiment of zoom lens of the present invention.Fig. 3 represents its lens pie graph in addition, and Fig. 4 is its all aberration diagram.
[table 2]
f＝7.44～12.58～21.20
F＝2.20～2.93～4.10
2ω＝65.14～39.89～23.95
The face numbering R D N d ν d
1 -267.083 1.39 1.69400 56.30
2 11.085 2.29 - -
3 10.025 1.56 1.75211 25.05
4 25.674 1.50 - -
5 -10.134 0.60 1.71300 53.93
6 -93.913 12.45～5.48～1.15 - -
7 9.858 1.55 1.51680 64.20
8 -253.893 0.10 - -
9 6.030 1.99 1.48749 70.45
10 296.170 1.54 - -
11 -48.736 0.60 1.80518 25.46
12 5.591 0.27 1.51576 52.63
HB 9.556 2.30 - -
13 11.259 1.86 1.59270 35.45
14 -15.730 5.78～7.07～9.97 - -
15 -8.354 1.20 1.51680 64.20
16 -17.033 0.62～3.47～7.00 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 64.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd HB face
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝1.58852E-03 A＝1.73732E-03 A＝1.65275E-03
B＝-5.49799E-05 B＝-3.74083E-05 B＝2.44004E-05
C＝1.35002E-06 C＝-2.45701E-07 C＝7.67809E-07
D＝-1.65445E-08 D＝4.40830E-08
E＝8.89968E-11 E＝-3.77383E-10
(embodiment 3)
Table 3 shows numerical example with regard to the 3rd embodiment of zoom lens of the present invention.Fig. 5 represents its lens pie graph in addition, and Fig. 6 is its all aberration diagram.
[table 3]
f＝7.16～12.08～20.34
F＝1.96～2.67～3.78
2ω＝66.05～41.13～25.07
The face numbering R D N d ν d
1 15.847 0.72 1.82080 42.71
2 6.335 3.18 - -
3 10.201 1.77 1.80518 25.46
4 31.687 1.58 - -
5 -11.002 0.60 1.72916 54.66
6 -120.591 13.45～6.03～1.15 - -
7 16.318 1.54 1.59240 68.30
8 -43.237 0.10 - -
9 5.818 2.44 1.49700 81.61
10 75.148 1.80 - -
11 2047.052 0.40 2.13120 24.07
12 8.259 0.08 1.51576 52.63
HB 11.960 2.25 - -
13 21.742 1.58 1.63980 34.57
14 -12.178 5.75～6.57～10.10 - -
15 -6.312 0.86 1.52470 0.00
16 -9.915 0.59～3.83～6.50 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 64.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd HB face
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝7.71215E-04 A＝6.01874E-04 A＝1.80140E-03
B＝-3.90277E-05 B＝-3.37703E-05 B＝1.85580E-05
C＝1.18125E-06 C＝-2.01670E-07 C＝1.80175E-06
D＝1.67917E-08 D＝4.13201E-08
E＝9.93339E-11 E＝-7.40014E-10
The 15th
K＝0.00000E+00
A＝3.16319E-04
B＝2.25248E-05
C＝1.22537E-06
D＝3.38575E-08
F＝7.76062E-10
(embodiment 4)
Table 4 shows numerical example with regard to the 4th embodiment of zoom lens of the present invention.Fig. 7 represents its lens pie graph in addition, and Fig. 8 is its all aberration diagram.
[table 4]
f＝7.05～11.91～20.11
F＝1.96～2.67～3.77
2ω＝66.82～41.71～25.41
The face numbering R D N d ν d
1 18.403 0.86 1.74330 49.33
2 6.257 3.09 - -
3 10.128 1.76 1.75211 25.05
4 31.779 1.59 - -
5 -10.608 0.60 1.77250 49.65
6 -49.451 13.36～6.01～1.15 - -
7 16.422 1.54 1.59240 68.30
8 -42.611 0.10 - -
9 5.781 2.45 1.49700 81.61
10 73.135 1.73 - -
11 230.193 0.40 2.13120 24.07
12 8.067 0.08 1.51576 52.63
HB 11.696 2.34 - -
13 22.222 1.56 1.64769 33.84
14 -12.637 5.79～6.59～10.16 - -
15 -6.358 0.81 152470 0.00
16 -9.961 0.60～3.86～6.50 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 64.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd HB face
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝7.49568E-04 A＝5.54774E-04 A＝1.80112E-03
B＝-3.53466E-05 B＝-2.80784E-05 B＝1.82356E-05
C＝1.04455E-06 C＝-5.44305E-07 C＝2.03684E-06
D＝-1.45700E-08 D＝5.21552E-08
E＝8.45726E-11 E＝-8.89130E-10
The 15th
K＝0.00000E+00
A＝3.10476E-04
B＝2.07038E-05
C＝-1.23507E-06
D＝4.49982E-08
E＝3.26333E-10
(embodiment 5)
Table 5 shows numerical example with regard to the 5th embodiment of zoom lens of the present invention.Fig. 9 represents its lens pie graph in addition, and Figure 10 is its all aberration diagram.
[table 5]
f＝7.32～12.36～20.86
F＝1.96～2.67～3.77
2ω＝64.85～40.24～24.51
The face numbering R D N d ν d
1 15.627 0.72 1.80139 45.45
2 6.382 3.28 - -
3 10.091 1.82 1.75211 25.05
4 34.848 1.48 - -
5 -11.446 0.60 1.77250 49.65
6 -104.339 13.52～6.03～1.15 - -
7 13.018 1.55 1.59240 68.30
8 -186.490 0.10 - -
9 6.245 2.43 1.49700 81.61
10 103.629 1.39 - -
11 50.000 0.60 1.84666 23.78
12 6.284 0.27 1.51576 52.63
HB 11.765 2.68 - -
13 77.186 1.18 1.72825 28.31
14 -16.362 5.54～6.28～9.90 - -
15 -6.274 0.80 1.52470 0.00
16 -9.088 0.66～3.94～6.50 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 64.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd HB face
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝7.00066E-04 A＝5.17317E-04 A＝1.57492E-03
B＝-3.49645E-05 B＝-2.82572E-05 B＝1.49192E-05
C＝1.05833E-06 C＝-3.38472E-07 C＝2.33017E-06
D＝-1.49056E-08 D＝4.25868E-08
E＝8.68760E-11 E＝-7.40912E-10
The 15th
K＝0.00000E+00
A＝3.07622E-04
B＝2.11729E-05
C＝-4.37666E-07
D＝-3.75725E-08
E＝2.60868E-09
(embodiment 6)
Table 6 shows numerical example with regard to the 6th embodiment of zoom lens of the present invention.Figure 11 represents its lens pie graph in addition, and Figure 12 is its all aberration diagram.
[table 6]
f＝7.50～12.67～21.38
F＝1.96～2.64～3.67
2ω＝64.46～39.41～23.74
The face numbering R D N d v d
1 24.732 0.72 1.80139 45.45
2 7.162 3.23 - -
3 12.488 1.49 1.84666 23.78
4 51.817 1.73 - -
5 -8.938 0.60 1.72916 54.66
6 -31.223 12.98～6.03～1.15 - -
7 23.748 1.20 1.56907 71.30
8 ∞ 0.10 - -
9 7.165 2.41 1.56907 71.30
10 48.475 1.68 - -
11 25.193 0.40 1.92286 20.88
12 8.143 0.28 1.51576 52.63
HB 16.145 2.57 - -
13 53.546 1.55 1.59270 35.45
14 -14.324 8.41～9.04～14.94 - -
15 -15.561 0.94 1.48749 70.45
16 -56.216 0.85～5.00～6.50 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 64.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd HB face
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝5.24648E-04 A＝2.78611E-04 A＝9.70290E-04
B＝-2.94471E-05 B＝-2.49964E-05 B＝1.32384E-05
C＝9.41191E-07 C＝-250676E-07 C＝2.14344E-08
D＝-1.29636E-08 D＝4.13496E-08 D＝2.39724E-08
E＝6.72139E-11 E＝-7.49035E-10
(embodiment 7)
Table 7 shows numerical example with regard to the 7th embodiment of zoom lens of the present invention.Figure 13 represents its lens pie graph in addition, and Figure 14 is its all aberration diagram.
[table 7]
f＝6.84～11.55～19.51
F＝1.96～2.71～3.87
2ω＝69.08～42.81～26.10
The face numbering R D N d ν d
1 15.653 0.72 1.80139 45.45
2 6.040 2.70 - -
3 9.350 1.85 1.75211 25.05
4 38.082 1.31 - -
5 -11.201 0.60 1.80420 46.49
6 -244.422 11.13～5.11～1.15 - -
7 10.418 1.63 1.63246 63.80
8 -56.708 0.10 - -
9 5.172 2.30 1.49700 81.61
10 24.537 0.56 - -
11 11.319 0.60 2.13120 24.07
12 4.674 0.28 1.51576 52.63
HB 8.571 3.56 - -
13 49.982 1.17 1.72825 28.32
14 -16.470 2.85～3.39～5.07 - -
15 -5.163 0.80 1.52470 56.24
16 -11.872 0.42～3.18～6.50 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 64.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd HB face
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝6.73986E-04 A＝4.58940E-04 A＝2.46880E-03
B＝-3.42408E-05 B＝-2.49784E-05 B＝3.77422E-05
C＝1.13307E-06 C＝-7.03415E-07 C＝9.84085E-06
D＝-1.70404E-08 D＝6.45140E-08
E＝1.08315E-10 E＝-1.11179E-09
The 15th
K＝0.00000E+00
A＝8.07318E-04
B＝-1.31471E-05
C＝6.51045E-06
D＝-4.71874E-07
E＝1.44714E-08
(embodiment 8)
Table 8 shows numerical example with regard to the 8th embodiment of zoom lens of the present invention.Figure 15 represents its lens pie graph in addition, and Figure 16 is its all aberration diagram.
[table 8]
f＝6.31～10.65～17.98
F＝1.96～2.63～3.86
2ω＝73.41～46.41～28.54
The face numbering R D N d ν d
1 17.015 0.72 1.80139 45.45
2 5.363 2.18 - -
3 9.445 1.85 1.75211 25.05
4 58.657 1.21 - -
5 -10.533 0.60 1.80420 46.49
6 -73.349 10.29～4.57～1.15 - -
7 9.281 1.60 1.63246 63.80
8 -146.546 0.10 - -
9 5.000 2.20 1.56907 71.30
10 15.862 0.43 - -
11 8.653 0.60 2.13120 24.07
12 4.035 0.28 1.51576 52.63
HB 6.778 3.80 - -
13 10.273 1.16 1.64769 33.84
14 44.746 2.33～3.96～6.50 - -
15 -11.741 0.80 1.52470 56.24
16 -100.000 0.42～2.06～4.67 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 64.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd HB face
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝7.11482E-04 A＝4.23375E-04 A＝2.66098E-03
B＝-4.64796E-05 B＝-6.38713E-05 B＝2.18014E-04
C＝1.77120E-06 C＝8.81002E-07 C＝-2.03204E-05
D＝-3.35921E-08 D＝3.08608E-08 D＝2.93539E-06
E＝2.73324E-10 E＝-1.74431E-09
The 15th the 16th
K＝0.00000E+00 K＝0.00000E+00
A＝-2.93208E-03 A＝-4.12052E-03
B＝-1.27225E-03 B＝-4.73899E-04
C＝2.33560E-04 C＝9.24730E-05
D＝1.67617E-05 D＝-5.77245E-06
E＝4.44737E-07 E＝1.28099E-07
(embodiment 9)
Table 9 shows numerical example with regard to the 9th embodiment of zoom lens of the present invention.Figure 17 represents its lens pie graph in addition, and Figure 18 is its all aberration diagram.
[table 9]
f＝6.74～11.38～19.21
F＝1.96～2.68～3.87
2ω＝70.13～43.83～26.48
The face numbering R D N d ν d
1 36.140 0.72 1.80139 45.45
2 8.483 1.74 - -
3 56.891 1.41 1.90680 21.20
4 -24.955 1.03 - -
5 -10.738 0.60 1.80420 46.49
6 -200.000 10.20～4.59～1.15 - -
7 8.042 1.84 1.49700 81.61
8 -68.006 0.10 - -
9 7.177 1.58 1.49700 81.61
10 172.553 1.58 - -
11 11.875 0.60 1.94595 17.98
12 6.430 3.22 - -
13 6.958 1.38 1.59270 35.45
14 25.063 2.82～3.74～5.23 - -
15 -10.314 1.20 1.69400 56.30
16 -100.000 0.58～2.92～6.50 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 64.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd the 9th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝4.98461E-04 A＝3.87140E-04 A＝-3.14332E-04
B＝-2.03601E-05 B＝-1.30231E-05 B＝2.43375E-08
C＝7.01097E-07 C＝-1.46782E-07 C＝-1.12574E-06
D＝-1.03245E-08 D＝3.28872E-08 D＝1.85915E-08
E＝5.90908E-11 E＝-5.56360E-10
The 10th the 15th the 16th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝3.04348E-04 A＝7.06471E-03 A＝-5.59290E-03
B＝-5.47777E-06 B＝9.93684E-05 B＝2.40927E-04
C＝-5.02203E-07 C＝-7.12983E-06 C＝-1.03510E-05
D＝1.54264E-08 D＝1.49799E-06 D＝5.98947E-07
E＝-7.81775E-08 E＝-1.89781E-08
(embodiment 10)
Table 10 shows numerical example with regard to the 10th embodiment of zoom lens of the present invention.Figure 19 represents its lens pie graph in addition, and Figure 20 is its all aberration diagram.
[table 10]
f＝6.34～10.72～18.08
F＝1.96～2.56～3.56
2ω＝73.38～45.12～27.42
The face numbering R D N d ν d
1 18.462 0.73 1.80139 45.45
2 5.886 3.15 - -
3 10.180 1.74 1.80518 25.46
4 33.752 1.57 - -
5 -10.151 0.60 1.71300 53.93
6 -43.539 14.00～5.92～1.15 - -
7 9.569 1.96 1.48749 70.45
8 -169.263 0.10 - -
9 6.063 2.30 1.49700 81.61
10 251.755 0.27 - -
11 9.793 0.44 2.13120 24.07
12 5.562 2.00 - -
13 -29.901 1.19 1.58144 40.89
14 -9.099 7.59～11.45～17.93 - -
15 -28.509 0.77 1.80139 45.45
16 -100.000 0.50 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 64.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd the 9th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝9.57722E-04 A＝7.56659E-04 A＝-1.40806E-04
B＝-6.34113E-05 B＝-6.70163E-05 B＝3.06302E-06
C＝2.14801E-06 C＝1.68608E-07 C＝-1.81087E-07
D＝-3.42100E-08 D＝7.76286E-08 D＝3.31558E-09
E＝2.15103E-10 E＝-1.91822E-09
The 10th the 15th the 16th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝9.68134E-04 A＝-2.91282E-03 A＝-3.01357E-03
B＝-3.49836E-06 B＝3.46542E-04 B＝2.99577E-04
C＝-7.95269E-08 C＝-1.06580E-05 C＝-4.82336E-06
D＝5.61073E-09 D＝-1.55216E-07
(embodiment 11)
Table 11 shows numerical example with regard to the 11st embodiment of zoom lens of the present invention.Figure 21 represents its lens pie graph in addition, and Figure 22 is its all aberration diagram.
[table 11]
f＝6.71～11.33～19.11
F＝1.96～2.58～3.67
2ω＝70.19～43.46～26.13
The face numbering R D N d ν d
1 19.622 0.72 1.80139 45.45
2 6.259 2.66 - -
3 9.860 1.50 1.92286 20.88
4 16.423 2.52 - -
5 -9.063 0.60 1.72916 54.66
6 -18.779 14.00～5.92～1.15 - -
7 8.982 2.15 1.49700 81.61
8 -100.000 0.10 - -
9 6.397 2.84 1.49700 81.61
10 26.11 1.07 - -
11 16.986 0.46 2.13120 24.07
12 5.793 1.78 - -
13 10.614 1.80 1.59270 35.45
14 -16.340 7.23～11.54～18.80 - -
15 -9.688 0.60 1.77250 49.65
16 -13.280 0.50 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 64.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd the 9th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝7.65552E-04 A＝6.40643E-04 A＝-9.82365E-05
B＝-3.73883E-05 B＝-4.06795E-05 B＝-1.65981E-06
C＝1.05806E-06 C＝3.14200E-07 C＝1.11062E-07
D＝-1.44013E-08 D＝1．86716E-08 D＝-8.98355E-09
E＝8.24195E-11 E＝-4.30497E-10
The 10th
K＝0.00000E+00
A＝6.50969E-04
B＝7.92004E-06
C＝-6.07931E-07
D＝1.03289E-08
(embodiment 12)
Table 12 shows numerical example with regard to the 12nd embodiment of zoom lens of the present invention.Figure 23 represents its lens pie graph in addition, and Figure 24 is its all aberration diagram.
[table 12]
f＝7.50～12.66～21.38
F＝1.96～2.64～3.74
2ω＝64.22～39.44～23.82
The face numbering R D N d ν d
1 27.549 1.41 1.92110 22.40
2 8.142 2.25 - -
3 10.099 1.85 1.94595 17.98
4 26.525 1.78 - -
5 -11.762 0.60 1.72916 54.66
6 -166.667 14.00～6.13～1.15 - -
7 8.538 1.96 1.56907 71.30
8 0.000 0.10 - -
9 7.083 2.15 1.49700 81.61
10 33.148 2.11 - -
11 -22.428 0.60 1.92110 22.40
12 11.32 1.49 - -
13 12.933 1.80 1.59270 35.45
14 -11.410 5.39～6.38～9.37 - -
15 -6.312 0.80 1.52470 56.24
16 -9.596 0.65～3.49～6.50 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 61.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd the 12nd
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝8.23589E-04 A＝9.18013E-04 A＝1.06746E-03
B＝-2.32953E-05 B＝-1.56289E-05 B＝4.78234E-06
C＝4.76324E-07 C＝-3.09049E-07 C＝5.17213E-07
D＝-4.68996E-09 D＝2.31994E-08 D＝-3.58877E-09
E＝2.00330E-11 E＝-2.15404E-10
The 15th
K＝0.00000E+00
A＝1.48298E-04
B＝4.39621E-05
C＝-4.31510E-06
D＝2.34094E-07
E＝-4.28919E-09
(embodiment 13)
Table 13 shows numerical example with regard to the 13rd embodiment of zoom lens of the present invention.Figure 25 represents its lens pie graph in addition, and Figure 26 is its all aberration diagram.
[table 13]
f＝7.45～12.58～21.23
F＝1.96～2.69～3.89
2ω＝64.57～39.80～24.08
The face numbering R D N d ν d
1 17.811 0.72 1.81474 37.03
2 6.504 3.14 - -
3 10.745 1.74 1.84666 23.78
4 40.771 1.49 - -
5 -10.771 0.60 1.71300 53.93
6 -254.187 12.99～5.79～1.15 - -
7 7.909 2.57 1.63246 63.80
8 -19.247 0.33 - -
9 6.575 1.77 1.49700 81.61
10(11) 33.647 0.60 2.08160 30.38
12 5.624 2.94 - -
13 27.585 1.49 1.51742 52.15
14 -10.421 6.28～7.32～11.42 - -
15 -6.326 1.02 1.52470 56.24
16 -8.836 0.67～3.94～6.50 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 64.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd the 7th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝5.60092E-04 A＝3.49256E-04 A＝-2.07419E-04
B＝-2.82891E-05 B＝-2.58974E-05 B＝-2.23611E-06
C＝8.47721E-07 C＝-1.55937E-07 C＝-1.42245E-08
D＝-1.16415E-08 D＝2.87711E-08 D＝1.03618E-09
E＝6.74009E-11 E＝-5.02015E-10
The 8th the 15th
K＝0.00000E+00 K＝0.00000E+00
A＝3.03841E-04 A＝2.10416E-04
B＝-4.33614E-06 B＝2.52471E-05
C＝9.06291E-08 C＝-2.26441E-06
D＝1.20990E-07
E＝-1.65381E-09
(embodiment 14)
Table 14 shows numerical example with regard to the 14th embodiment of zoom lens of the present invention.Figure 27 represents its lens pie graph in addition, and Figure 28 is its all aberration diagram.
[table 14]
f＝6.57～11.09～18.74
F＝1.96～2.67～3.87
2ω＝71.53～44.99～27.19
The face numbering R D N d ν d
1 38.088 0.72 1.80139 45.45
2 10.760 1.68 - -
3 38.575 1.32 1.90680 21.20
4 -42.703 0.80 - -
5 -13.194 0.60 1.69400 56.30
6 19.949 9.87～4.64～1.40 - -
7 7.492 1.97 1.49700 81.61
8 -29.304 0.10 - -
9 8.036 1.42 1.49700 81.61
10 148.276 1.65 - -
11 19.507 0.60 1.94595 17.98
12 8.199 3.09 - -
13 6.795 1.46 1.59270 35.45
14 40.999 2.33～3.27～4.80 - -
15 -9.861 1.20 1.74330 49.33
16 -99.988 0.80～3.09～6.52 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 64.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd the 9th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝1.01570E-03 A＝1.05818E-03 A＝-8.71380E-04
B＝-2.41130E-05 B＝-1.21429E-05 B＝-4.11912E-05
C＝3.68148E-07 C＝-2.28661E-07 C＝-2.00496E-06
D＝-5.16203E-10 D＝1.01210E-08 D＝-8.00461E-08
E＝-2.55290E-12 E＝2.10694E-10
The 10th the 15th the 16th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝-4.73025E-04 A＝-8.22096E-03 A＝-6.40932E-03
B＝-4.68723E-05 B＝1.04367E-04 B＝3.04870E-04
C＝-1.46586E-06 C＝9.03387E-06 C＝-9.58281E-06
D＝-1.85909E-08 D＝-9.34746E-07 D＝2.27246E-07
E＝5.93470E-08 E＝-1.47484E-09
(embodiment 15)
Table 15 shows numerical example with regard to the 15th embodiment of zoom lens of the present invention.Figure 29 represents its lens pie graph in addition, and Figure 30 is its all aberration diagram.
[table 15]
f＝6.49～10.96～18.51
F＝1.96～2.61～3.73
2ω＝71.73～44.92～27.28
The face numbering R D N d ν d
1 98.945 1.50 1.76802 49.24
2 7.890 1.00 - -
3 7 292 1.85 1.75211 25.05
4 15.697 1.50 - -
5 -11.908 0.60 1.69400 56.30
6 180.979 10.09～4.50～1.23 - -
7 8.578 1.59 1.72916 54.6
8 -92.380 0.20 - -
9 5.608 1.55 1.56907 71.30
10 20.974 0.43 - -
HB 8.560 0.28 1.51576 52.63
11 26.836 0.40 2.13120 24.07
12 5.623 4.22 - -
13 8.119 1.47 1.67270 32.17
14 45.144 2.55～3.80～5.3 - -
15 60.959 0.80 1.52470 56.24
16 10.937 0.55～2.65～6.41 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 64.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd HB face
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝1.76253E-03 A＝2.17723E-03 A＝-1.21189E-03
B＝-6.27228E-05 B＝-3.32205E-05 B＝-2.93147E-05
C＝1.53123E-06 C＝-1.01399E-06 C＝6.04242E-07
D＝-1.91070E-08 D＝8.46611E-08 D＝-2.12874E-08
E＝9.93692E-11 E＝-5.29309E-10
The 15th the 16th
K＝0.00000E+00 K＝0.00000E+00
A＝-1.07470E-02 A＝-1.03696E-02
B＝3.29717E-04 B＝5.29364E-04
C＝-5.84664E-06 C＝-1.77903E-05
D＝5.46775E-07 D＝4.90408E-07
E＝-4.53815E-08 E＝-1.46981E-08
(embodiment 16)
Table 16 shows numerical example with regard to the 16th embodiment of zoom lens of the present invention.Figure 31 represents its lens pie graph in addition, and Figure 32 is its all aberration diagram.
[table 16]
f＝5.80～9.79～16.53
F＝1.96～2.64～3.79
2ω＝77.96～50.42～30.92
The face numbering R D N d ν d
1 28.033 0.72 1.80139 45.45
2 7.946 1.60 - -
3 18.082 1.51 1.90680 21.20
4 -124.335 0.67 - -
5 -15.650 0.60 1.71300 53.93
6 15.749 9.69～4.58～1.43 - -
7 7.006 1.79 1.51680 64.20
8 -34.445 0.10 - -
9 8.888 1.72 1.48749 70.45
10 -25.459 0.76 - -
11 94.713 0.60 1.94595 17.98
12 10.602 3.53 - -
13 7.168 1.42 1.59270 35.45
14 42.718 2.33～3.39～5.17 - -
15 -85.497 1.50 1.52470 56.24
16 9.769 0.44～2.43～5.36 - -
17 ∞ 0.64 1.54892 69.76
18 ∞ 0.64 - -
19 ∞ 0.64 1.51680 64.20
20 ∞ - - -
Asphericity coefficient
The 1st the 2nd the 9th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝8.67478E-04 A＝7.89734E-01 A＝-1.12725E-03
B＝-2.29069E-05 B＝-3.88424E-06 B＝-6.89841E-05
C＝4.18462E-07 C＝-8.96630E-07 C＝-4.63941E-07
D＝-3.71746E-09 D＝3.55035E-08 D＝-1.62051E-07
E＝1.75344E-11 E＝-3.56438E-10
The 10th the 15th the 16th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝-5.87874E-04 A＝-1.17541E-02 A＝-1.07772E-02
B＝-8.31786E-05 B＝3.57416E-04 B＝6.05058E-04
C＝2.77664E-06 C＝-5.86048E-05 C＝-3.89222E-05
D＝-1.93492E-07 D＝5.75674E-06 D＝2.04301E-06
E＝-2.09336E-07 E＝-4.97521E-08
Next, in table 17, arrive embodiment 16 relatively with embodiment 1, to representing with the gathering of value corresponding from conditional (1) to conditional (15).
Table 17
Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5
Conditional (1) -0.58 -0.63 -0.59 -0.59 -0.58
Conditional (2) 5.94 5.32 5.68 5.76 5.55
Conditional (3) -0.19 -0.22 -0.20 -0.19 -0.17
Conditional (4) 0.34 0.35 0.40 0.37 0.40
Conditional (5) 24.48 30.07 23.23 24.44 22.50
Conditional (6) 1.85 1.75 1.81 1.75 1.75
Conditional (7) 1.03 0.67 1.13 1.13 1.15
Conditional (8) 0.64 1.11 0.62 0.62 0.63
Conditional (9) 0.88 0.96 0.91 0.90 0.88
Conditional (10) -0.87 -0.92 -0.84 -0.81 -0.58
Conditional (11) 48.63 41.87 50.88 50.88 51.17
Conditional (12) -0.57 -0.30 -0.59 -0.59 -0.30
Conditional (13) 0.47 0.75 0.44 0.43 0.56
Conditional (14) 0.65 0.78 0.60 0.60 0.62
Conditional (15) -1.07 -0.89 -1.13 -1.11 -1.17
Embodiment 6 Embodiment 7 Embodiment 8 Embodiment 9 Embodiment 10
Conditional (1) -0.65 -0.59 -0.63 -0.64 -0.56
Conditional (2) 5.79 5.05 5.16 4.83 6.48
Conditional (3) -0.17 -0.38 -0.25 -0.40 -0.13
Conditional (4) 0.39 0.43 0.43 0.35 0.36
Conditional (5) 26.27 20.92 20.92 24.77 24.24
Conditional (6) 1.85 1.75 1.75 1.91 1.81
Conditional (7) 1.05 1.13 1.18 0.79 1.08
Conditional (8) 0.57 0.65 0.57 0.15 0.58
Conditional (9) 0.69 1.00 0.97 0.88 0.81
Conditional (10) -0.34 -0.59 -0.57 -0.43 -0.53
Conditional (11) 50.42 48.63 43.48 63.63 51.96
Conditional (12) -0.35 -0.57 -0.53 -0.45 -0.64
Conditional (13) 0.32 0.66 0.68 0.84 0.66
Conditional (14) 0.46 0.80 0.93 1.05 1.14
Conditional (15) -0.48 -1.32 -0.54 -0.65 -0.22
Embodiment 11 Embodiment 12 Embodiment 13 Embodiment 14 Embodiment 15
Conditional (1) -0.61 -0.56 -0.62 -0.66 -0.63
Conditional (2) 6.40 5.45 5.41 4.81 5.02
Conditional (3) -0.13 -0.20 -0.15 -0.44 -0.25
Conditional (4) 0.28 0.46 0.44 0.29 0.39
Conditional (5) 29.19 20.55 21.70 29.68 27.73
Conditional (6) 1.92 1.95 1.85 1.91 1.75
Conditional (7) 1.07 0.92 1.15 0.61 0.82
Conditional (8) 0.63 0.81 0.61 0.28 1.08
Conditional (9) 0.80 0.90 1.21 0.89 1.07
Conditional (10) -0.84 -0.94 -1.18 -0.43 -0.73
Conditional (11) 57.54 54.05 42.32 63.63 38.91
Conditional (12) -0.63 -0.39 -0.52 -0.45 -0.48
Conditional (13) 0.75 0.88 0.94 0.88 0.76
Conditional (14) 1.16 0.67 1.32 0.80 1.15
Conditional (15) -0.69 -1.19 -1.18 -0.67 0.11
Embodiment 16
Conditional (1) -0.64
Conditional (2) 5.34
Conditional (3) -0.35
Conditional (4) 0.33
Conditional (5) 28.49
Conditional (6) 1.91
Conditional (7) 0.73
Conditional (8) 0.44
Conditional (9) 0.88
Conditional (10) -0.46
Conditional (11) 49.34
Conditional (12) -0.44
Conditional (13) 0.83
Conditional (14) 0.55
Conditional (15) -0.07
As table 17 is understood, and satisfy condition formula (1) to (15), and as from the aberration diagram each embodiment is understood, each aberration has all obtained good correction from the relevant numerical value of each embodiment of embodiment 1 to embodiment 16.
Next, with regard to concrete numerical value embodiment related to the present invention, illustrate as embodiment 17 to embodiment 24.From following embodiment 17 to embodiment 24, from object side in turn, constitute by the 1st lens combination LG1, the 2nd lens combination LG2 and lens combination LG3, described the 1st lens combination LG1 integral body has negative refracting power, and constitute: i.e. the 1st lens L1 by disposing following lens, it is the lens (hereinafter referred to as negative lens) with negative refracting power and is to the protruding meniscus shape of object side (following object side with the 1st lens L1 as the 1st, will as the side as the 2nd face); The 2nd lens L2, it is the lens (hereinafter referred to as positive lens) with positive refracting power, and has protruding meniscus shape (with the object side of the 2nd lens L2 as the 3rd, will as the side as the 4th face) at object side; And the 3rd lens L3, it is negative lens (with the object side of the 3rd lens L3 as the 5th, will as the side as the 6th face).Described the 2nd lens combination LG2, integral body has positive refracting power, and constitutes by disposing following lens: i.e. the 4th lens L4, it is positive lens (with the object side of the 4th lens L4 as the 7th, will as the side as the 8th face); The 5th lens L5, it is for negative lens and be the meniscus shape that protrudes to object side (with the object side of the 5th lens L5 as the 9th, will as the side as the 10th face); And the 6th lens L6, it is positive lens (with the object side of the 6th lens L6 as the 11st, will as the side as the 12nd face).Described the 3rd lens combination LG3, integral body has negative refracting power, and constitutes as the 7th lens L7 of negative lens (with the object side of the 7th lens L7 as the 13rd, will as the side as the 14th face) by configuration.In addition; between the 14th of the side of picture and image planes of described the 7th lens L7; dispose across the airspace: quartzy light light filter LPF is (with the object side of quartzy light light filter LPF as the 15th; will be as the side as the 16th face) and as the sealing cover glass CG of the protection usefulness of the camera part of CCD (with the object side of sealing cover glass CG as the 17th, will as the side as the 18th face).Usually using needed ultrared the ending of imageing sensor of CCD and so on, is to tackle by implement infrared ray plated film etc. on a face of the plane of refraction of described quartzy optical filter LPF, to this diagram not.About becoming doubly, then be by the position of described the 1st lens combination LG1, the 2nd lens combination LG2 is moved along optical axis direction, perhaps except moving described the 1st lens combination LG1 and described the 2nd lens combination LG2, also move the position of fast the 3rd lens combination LG3, and finish.In addition, in embodiment, can finish by the position of described the 1st lens combination LG1 or described the 3rd lens combination LG3 is moved along optical axis direction, but be not limited to these methods about focus adjustment with respect to the limited distance object.
In addition, for employed aspheric surface among each embodiment, as is generally known like that, with optical axis direction as the Z axle, under the situation of direction that will be vertical as Y-axis with optical axis, will be by the aspheric surface formula:
Z = ( Y 2 / R ) / [ 1 + { 1 - ( 1 + K ) ( Y / R ) 2 } ]
+ A · Y 4 + B · Y 6 + C · Y 8 + D · Y 10 + · · · ·
The curve of being given rotation and obtain curved surface around optical axis, and, by giving paraxial radius of curvature R, constant of the cone K, high order aspheric surface coefficient A, B, C, D and define shape.In addition, " E numeral back to back " expression " 10 tired taking advantage of " in the mark of the asphericity coefficient of the constant of the cone in the table and high order with it.For example, " E-04 " expression 10 -4, this numerical value is attached on its numerical value before.
In the zoom lens of present embodiment, the 1st lens combination that has negative refracting power from object side in turn by integral body, integral body has the 2nd lens combination of positive refracting power, and whole the 3rd lens combination with negative refracting power constitutes, described the 1st lens combination is by 1st lens of configuration as negative lens, the 2nd lens as positive lens, and as these three pieces of lens of the 3rd lens of negative lens and constitute, described the 2nd lens combination is by 4th lens of configuration as positive lens, the 5th lens as positive lens, the 6th lens as negative lens, and as these 4 pieces of lens of the 7th lens of positive lens and constitute, described the 3rd lens combination constitutes by the 8th lens of configuration as negative lens, about becoming doubly, by move the position of described the 1st lens combination and described the 2nd lens combination along optical axis direction, perhaps by except moving described the 1st lens combination and described the 2nd lens combination, also moving the position of described the 3rd lens combination, and finish, the positive and negative formation of the optical power of each lens in the lens total system, be negative, just, negative, just, just, negative, just, negative such, between described the 4th lens and described the 5th lens to be border and symmetrical structure, the amount for optical power also becomes the distribution of summary to becoming equally.
The invention still further relates to a kind of video camera, its mounting has above-described zoom lens.
The zoom lens of present embodiment, the 2nd lens combination and whole the 3rd lens combination with negative refracting power that the 1st lens combination, the integral body that has a negative refracting power by integral body in turn from object side has positive refracting power constitute, described the 1st lens combination integral body has negative refracting power, and constitute: the 1st lens by disposing following lens, it is the lens (hereinafter referred to as negative lens) with negative refracting power, and is to the protruding meniscus shape of object side; The 2nd lens, it is the lens (hereinafter referred to as positive lens) with positive refracting power, and is to the protruding meniscus shape of object side; And the 3rd lens, it is a negative lens, described the 2nd lens combination integral body has positive refracting power, and by 4th lens of configuration as positive lens, be negative lens and be to the 5th lens of the protruding meniscus shape of object side and as the 6th lens of positive lens and constitute, described the 3rd lens combination integral body has negative refracting power, and constitute as the 7th lens of negative lens by configuration, about becoming doubly, by move the position of described the 1st lens combination and described the 2nd lens combination along optical axis direction, perhaps except moving described the 1st lens combination and described the 2nd lens combination, also move the position of described the 3rd lens, and finish, the optical power that is had about described the 1st lens combination satisfies following conditional (16), size about the lens total system satisfies following conditional (17), in addition, the optical power that is had about described the 3rd lens combination satisfies following conditional (18):
(16)-0.8≤f w/f 1≤-0.4
(17)4.5≤TL w/f w≤7.5
(18)-0.6≤f w/f m≤0
Wherein,
f w: the system-wide synthetic focal length of the lens in the wide-angle side;
f 1: the synthetic focal length of the 1st lens combination;
f m: the synthetic focal length of the 3rd lens combination;
TL w: the distance (wherein, the parallel plane glass part is the air scaled distance) of image planes is arrived in the object side that constitutes the 1st lens of the 1st lens combination in the wide-angle side.
In above-mentioned zoom lens, described the 1st lens that constitute described the 1st lens combination are non-spherical lenses, the optical power that is had about described the 2nd lens, satisfy following relational expression (19), about the dispersing characteristic in each lens that is allocated in the 1st lens combination, satisfy following conditional (20), refractive index about described the 2nd lens satisfies following conditional (21), shape about the face of the picture side of described the 1st lens, satisfy following conditional (22), in addition, the relative characteristic about the shape of the face of the object side of the face of the picture side of described the 1st lens and described the 2nd lens, satisfy following conditional (23):
(19)0.25≤f w/f 2≤0.55
(20)15≤(υ 1+υ 3)/2-υ 2
(21)1.65≤n 2
(22)0.8≤f w/r 2≤1.5
(23)0.45≤r 2/r 3≤0.85
Wherein:
f 2: the focal length that constitutes the 2nd lens of the 1st lens combination;
υ 1: the Abbe number that constitutes the 1st lens of the 1st lens combination;
υ 2: the Abbe number that constitutes the 2nd lens of the 1st lens combination;
υ 3: the Abbe number that constitutes the 3rd lens of the 1st lens combination;
n 2: constitute the refractive index of the 2nd lens of the 1st lens combination to the d line;
r 2: the radius-of-curvature of face of picture side that constitutes the 1st lens of the 1st lens combination;
r 3: the radius-of-curvature of face of object side that constitutes the 2nd lens of the 1st lens combination.
In above-mentioned zoom lens, constitute in the plane of refraction of each lens of described the 2nd lens combination, at least one plane of refraction is an aspherical shape, the positive optical power that is had about described the 4th lens satisfies following conditional (24), the negative optical power that is had about described the 5th lens satisfies following conditional (25), satisfy following conditional (26) about the dispersing characteristic that is distributed in each lens that constitutes described the 2nd lens combination, similarly in the relation of the refractive index that these each lens had, satisfy following conditional (27), shape about the face of the object side of described the 4th lens satisfies following conditional (28), in addition, relativeness about the shape of the face of the picture side of the face of the object side of described the 4th lens and described the 6th lens, satisfy following conditional (29):
(24)0.65≤f w/f 4≤1.05
(25)-0.5≤f w/f 5≤-0.3
(26)25≤(υ 4+υ 6)/2-υ 5
(27)-0.45≤(n 4+n 6)/2-n 5≤-0.20
(28)0.8≤f w/r 7≤1.3
(29)-1.1≤r 7/r 12≤-0.7
Wherein:
f 4: the focal length that constitutes the 4th lens of the 2nd lens combination;
f 5: the focal length that constitutes the 5th lens of the 2nd lens combination;
υ 4: the Abbe number that constitutes the 4th lens of the 2nd lens combination;
υ 5: the Abbe number that constitutes the 5th lens of the 2nd lens combination;
υ 6: the Abbe number that constitutes the 6th lens of the 2nd lens combination;
n 4: constitute the refractive index of the 4th lens of the 2nd lens combination to the d line;
n 5: constitute the refractive index of the 5th lens of the 2nd lens combination to the d line;
n 6: constitute the refractive index of the 6th lens of the 2nd lens combination to the d line;
r 7: the radius-of-curvature of face of object side that constitutes the 4th lens of the 2nd lens combination;
r 12: the radius-of-curvature of face of picture side that constitutes the 6th lens of the 2nd lens combination.
In above-mentioned zoom lens, the shape about the face of the object side of described the 7th lens that constitute described the 3rd lens combination, satisfy following conditional (30):
(30)-1.2≤f w/r 13≤0.4
Wherein:
r 13: the radius-of-curvature of face of object side that constitutes the 7th lens of the 3rd lens combination.
The zoom lens of present embodiment, also can, the 1st lens combination that has negative refracting power from object side in turn by integral body, integral body has the 2nd lens combination of positive refracting power, and whole the 3rd lens combination with negative refracting power constitutes, described the 1st lens combination by configuration as negative lens and be the 1st lens of the meniscus shape that protrudes to object side, as positive lens and make the 2nd lens to the protruding meniscus shape of object side, and as these three pieces of lens of the 3rd lens of negative lens and constitute, described the 2nd lens combination is by 4th lens of configuration as positive lens, as negative lens and be the 5th lens to the protruding meniscus shape of object side, as these three pieces of lens of the 6th lens of positive lens and constitute, described the 3rd lens combination constitutes by the 7th lens of configuration as negative lens, about becoming doubly, by move the position of described the 1st lens combination and described the 2nd lens combination along optical axis direction, perhaps finish by the position of except moving described the 1st lens combination and described the 2nd lens combination, also moving described the 3rd lens combination, the positive and negative formation of the optical power of each lens in the lens total system, be negative, just, negative, just, negative, just, negative such, with described the 4th lens is center and symmetrical structure, also becomes the distribution of summary symmetry equally for the amount of optical power.
The invention still further relates to a kind of video camera, its mounting has above-described zoom lens.
Table 18 shows numerical example with regard to the 17th embodiment of zoom lens of the present invention.In addition, Figure 33 is its lens pie graph, and Figure 34 is its all aberration diagram.In table and the drawing, f represents the focal length (following expression from the left side to the wide-angle side, the value of intermediate field, telescope end) of lens total system.In addition, F NoExpression F number (number), 2 ω represent the whole visual angle of lens.In addition, R represents radius-of-curvature, and D represents lens thickness or lens at interval, and Nd represents the refractive index with respect to the d line, υ dThe Abbe number of expression d line.D in the spherical aberration diagram in all aberration diagrams, g, C are respectively the aberration curves in the wavelength separately.In addition, S.C. represents sine condition.S among the astigmatism figure represents the sagitta of arc, and M represents メ リ デ ィ ォ Na Le.
[table 18]
f＝7.06～11.92～20.10
F＝1.96～2.59～3.60
2ω＝67.41～41.42～25.07
The face designation R D N d ν d
1 16.729 0.72 1.81474 37.03
2 6.464 3.52 - -
3 11.169 1.67 1.84666 23.78
4 42.179 1.39 - -
5 -11.183 0.60 1.71300 53.93
6 -218.787 13.77～6.15～1.15 - -
7 6.828 2.63 1.56907 71.30
8 -17.616 1.00 - -
9 10.138 0.67 1.92286 20.88
10 5.946 2.28 - -
11 -32.449 1.37 1.51680 64.20
12 -8.425 7.59～8.07～12.02 - -
13 -12.285 0.80 1.52470 56.24
14 -23.623 0.79～4.28～6.50 - -
15 ∞ 0.64 1.54892 69.76
16 ∞ 0.64 - -
17 ∞ 0.64 1.51680 64.20
18 ∞ - - -
Asphericity coefficient
The 1st the 2nd the 7th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝4.78485E-04 A＝2.48666E-04 A＝-3.98997E-04
B＝-2.71492E-05 B＝-2.59409E-05 B＝-8.90933E-07
C＝8.50633E-07 C＝-1.25078E-07 C＝-2.60573E-08
D＝-1.21986E-08 D＝2.89371E-08 D＝-9.58774E-10
E＝7.20010E-11 E＝-5.65562E-10
The 8th the 13rd
K＝0.00000E+00 K＝0.00000E+00
A＝4.76749E-04 A＝1.22023E-04
B＝-2.35319E-06 B＝-3.67055E-05
C＝5.30018E-08 C＝5.84669E-06
D＝-3.87348E-07
E＝9.48144E-09
(embodiment 18)
Table 19 shows numerical example with regard to the 18th embodiment of zoom lens of the present invention.In addition, Figure 35 is its lens pie graph.Figure 36 is its all aberration diagram.
[table 19]
f＝6.60～11.16～18.82
F＝1.96～2.59～3.66
2ω＝71.47～44.07～26.69
The face numbering R D N d ν d
1 17.897 0.76 1.80610 40.73
2 6.060 3.11 - -
3 10.235 1.79 1.84666 23.78
4 35.572 1.47 - -
5 -11.491 0.60 1.71300 53.93
6 -975.094 13.53～5.75～1.15 - -
7 7.081 2.37 1.63246 63.80
8 -24.413 0.76 - -
9 9.621 0.60 1.94595 17.98
10 5.884 2.57 - -
11 -48.524 1.23 1.51742 52.15
12 -9.264 8.19～12.30～19.23 - -
13 22.153 0.80 1.52470 56.24
14 11.862 0.56 - -
15 ∞ 0.64 1.54892 69.76
16 ∞ 0.64 - -
17 ∞ 0.64 1.51680 64.20
18 ∞ - - -
Asphericity coefficient
The 1st the 2nd the 7th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝9.08795E-04 A＝7.05999E-04 A＝-3.29615E-04
B＝-5.66115E-05 B＝-5.62207E-05 B＝-8.69046E-07
C＝1.79363E-06 C＝-4.84236E-08 C＝-1.90336E-08
D＝-2.64987E-08 D＝6.52311E-08 D＝-3.22161E-09
E＝1.55558E-10 E＝-1.39692E-09
The 8th the 13rd the 14th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝3.69730E-04 A＝-7.92748E-03 A＝-9.80709E-03
B＝-9.71883E-07 B＝6.45709E-04 B＝7.96636E-04
C＝-5.82142E-08 C＝-2.23222E-05 C＝-2.87699E-05
D＝6.79738E-08 D＝2.84988E-07
E＝3.12782E-09
(embodiment 19)
Table 20 shows numerical example with regard to the 19th embodiment of zoom lens of the present invention.In addition, Figure 37 is its lens pie graph.Figure 38 is its all aberration diagram.
[table 20]
f＝7.21～12.17～20.56
F＝1.96～2.64～3.77
2ω＝66.09～41.08～24.97
The face numbering R D N d ν d
1 19.074 1.07 1.81474 37.03
2 7.196 3.33 - -
3 10.800 1.41 1.90680 21.20
4 25.164 1.44 - -
5 -10.203 0.60 1.72916 54.66
6 -135.833 11.75～5.24～1.15 - -
7 6.502 2.59 1.63246 63.80
8 -19.202 0.10 - -
9 9.505 0.63 1.92286 20.88
10 5.644 2.89 - -
11 -21.863 1.26 1.48749 70.45
12 -7.726 7.65～8.88～12.56 - -
13 -11.251 0.86 1.52470 56.24
14 -20.216 0.80～3.67～6.50 - -
15 ∞ 0.64 1.54892 69.7
16 ∞ 0.64 - -
17 ∞ 0.64 1.51680 64.20
18 ∞ - - -
Asphericity coefficient
The 1st the 2nd the 7th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝8.59718E-04 A＝8.46466E-04 A＝-4.40865E-04
B＝-3.11014E-05 B＝-2.84513E-05 B＝-2.10515E-06
C＝8.29049E-07 C＝1.03543E-07 C＝-5.98113E-09
D＝-1.09284E-08 D＝2.12528E-08 D＝8.78276E-11
E＝6.55720E-11 E＝-3.12894E-10
The 8th the 13rd the 14th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝5.53958E-04 A＝-1.80421E-03 A＝-1.88435E-03
B＝-4.43099E-06 B＝-1.84005E-04 B＝-1.08716E-04
C＝1.66778E-07 C＝2.14189E-05 C＝1.36062E-05
D＝-6.75424E-07 D＝-4.81727E-07
E＝-1.04548E-08
(embodiment 20)
Table 21 shows numerical example with regard to the 20th embodiment of zoom lens of the present invention.In addition, Figure 39 is its lens pie graph.Figure 40 is its all aberration diagram.
[table 21]
f＝6.24～10.53～17.77
F＝1.96～2.65～3.80
2ω＝73.81～47.09～28.97
The face numbering R D N d ν d
1 15.937 0.72 1.82080 42.71
2 5.803 3.40 - -
3 11.046 1.60 1.84666 23.78
4 50.714 1.19 - -
5 -10.906 0.60 1.72916 54.66
6 217.040 10.82～4.83～1.15 - -
7 6.498 2.29 1.69400 56.30
8 -19.146 0.10 - -
9 9.474 0.70 1.94595 17.98
10 5.530 2.59 - -
11 -17.031 1.15 1.48749 70.45
12 -7.278 6.48～7.63～10.44 - -
13 -33.208 1.20 1.52470 56.24
14 96.110 0.76～3.33～6.50 - -
15 ∞ 0.64 1.54892 69.76
16 ∞ 0.64 - -
17 ∞ 0.64 1.51680 64.20
18 ∞ - - -
Asphericity coefficient
The 1st the 2nd the 7th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝6.04773E-04 A＝2.82447E-04 A＝-4.84216E-04
B＝-3.93535E-05 B＝-3.82997E-05 B＝-3.64447E-06
C＝1.50574E-06 C＝-1.81821E-07 C＝1.18953E-07
D＝-2.68733E-08 D＝6.33095E-08 D＝-7.50550E-10
E＝1.91711E-10 E＝-1.66775E-09
The 8th the 13rd the 14th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝5.48392E-04 A＝-3.60325E-03 A＝-3.61113E-03
B＝-7.15368E-06 B＝-1.50520E-04 B＝-5.28512E-05
C＝4.10325E-07 C＝1.46674E-05 C＝9.98329E-06
D＝-4.58990E-09 D＝-1.54888E-07 D＝-4.42543E-07
E＝-4.61722E-08
(embodiment 21)
Table 22 shows numerical example with regard to the 21st embodiment of zoom lens of the present invention.In addition, Figure 41 is its lens pie graph.Figure 42 is all its aberration diagrams.
[table 22]
f＝6.78～11.45～19.33
F＝1.96～2.59～3.71
2ω＝69.24～43.59～26.79
The face numbering R D N d ν d
1 21.346 1.20 1.80139 45.45
2 6.706 2.92 - -
3 9.220 1.65 1.80518 25.46
4 22.664 1.53 - -
5 -10.558 0.60 1.71300 53.93
6 -239.406 11.77～5.18～1.15 - -
7 6.127 2.64 1.59240 68.30
8 -17.843 0.10 - -
9 9.432 0.60 1.84666 23.78
10 5.430 2.72 - -
11 -21.877 1.30 1.49700 81.61
12 -7.458 7.74～10.13～14.95 - -
13 -18.253 0.80 1.60717 29.00
14 -46.532 0.80～2.44～4.14 - -
15 ∞ 0.64 1.54892 69.76
16 ∞ 0.64 - -
17 ∞ 0.64 1.51680 64.20
18 ∞ - - -
Asphericity coefficient
The 1st the 2nd the 7th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝1.20467E-03 A＝1.34100E-03 A＝-5.13225E-04
B＝-3.77105E-05 B＝-3.05456E-05 B＝-2.99283E-06
C＝8.31782E-07 C＝-1.62280E-07 C＝7.30923E-08
D＝-9.81491E-09 D＝2.33953E-08 D＝-4.31509E-09
E＝5.46771E-11 E＝-2.23641E-10
The 8th the 13rd the 14th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝6.53620E-04 A＝-2.03194E-03 A＝-2.55278E-03
B＝-3.25133E-06 B＝-2.81251E-04 B＝-1.49009E-04
C＝1.51177E-07 C＝2.90448E-05 C＝1.67952E-05
D＝-8.59119E-07 D＝-4.93972E-07
E＝-3.68943E-09
(embodiment 22)
Table 23 shows numerical example with regard to the 22nd embodiment of zoom lens of the present invention.In addition, Figure 43 is its lens pie graph.Figure 44 is its all aberration diagram.
[table 23]
f＝7.39～12.48～21.06
F＝1.96～2.62～3.73
2ω＝65.13～39.63～23.90
The face numbering R D N d ν d
1 15.869 0.72 1.81474 37.03
2 6.667 3.18 - -
3 10.994 1.78 1.84666 23.78
4 35.151 1.59 - -
5 -11.860 0.60 1.72916 54.66
6 -263.629 13.87～5.97～1.15 - -
7 6.954 2.52 1.56907 71.30
8 -18.119 0.71 - -
9 11.113 0.66 1.92286 20.88
10 6.443 2.65 - -
11 -44.977 1.30 1.51823 58.96
12 -8.568 7.70～8.76～10.79 - -
13 -9.935 0.60 1.48749 70.45
14 -30.569 0.74～3.31～7.00 - -
15 ∞ 0.64 1.54892 69.76
16 ∞ 0.64 - -
17 ∞ 0.64 1.51680 64.20
18 ∞ - - -
Asphericity coefficient
The 1st the 2nd the 7th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝3.78966E-04 A＝2.07611E-04 A＝-3.72392E-04
B＝-1.93884E-05 B＝-2.21333E-05 B＝-1.78195E-06
C＝5.84045E-07 C＝2.23132E-07 C＝-1.22161E-08
D＝-7.82448E-09 D＝7.02082E-09 D＝-1.43045E-11
E＝4.56451E-11 E＝-1.59634E-10
The 8th
K＝0.00000E+00
A＝4.88425E-04
B＝-3.79645E-06
C＝9.63737E-08
(embodiment 23)
Table 24 shows numerical example with regard to the 23rd embodiment of zoom lens of the present invention.In addition, Figure 45 is its lens pie graph.Figure 46 is its all aberration diagram.
[table 24]
f＝6.80～11.48～19.37
F＝1.96～2.57～3.55
2ω＝69.20～42.83～26.03
The face numbering R D N d ν d
1 16.220 0.72 1.81474 37.03
2 6.214 3.26 - -
3 10.545 1.62 1.84666 23.78
4 26.619 1.70 - -
5 -10.396 0.60 1.59240 68.30
6 -114.194 13.86～6.06～1.15 - -
7 6.997 2.58 1.56907 71.30
8 -15.232 1.00 - -
9 15.438 0.60 1.84666 23.78
10 6.905 2.10 - -
11 -44.097 1.55 1.48749 70.45
12 -7.771 7.86～8.79～11.95 - -
13 -7.917 0.80 1.52470 56.24
14 -12.408 0.68～3.62～6.50 - -
15 ∞ 0.64 1.54892 69.76
16 ∞ 0.64 - -
17 ∞ 0.64 1.51680 64.20
18 ∞ - - -
Asphericity coefficient
The 1st the 2nd the 7th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝7.42964E-04 A＝5.52326E-04 A＝-4.08870E-04
B＝-4.04783E-05 B＝-3.65061E-05 B＝3.39731E～08
C＝1.26829E-06 C＝-2.28480E-07 C＝-1.70352E～08
D＝-1.90846E-08 D＝4.86906E-08 D＝2.20197E～10
E＝1.16409E-10 E＝-1.01645E-09
The 8th the 14th
K＝0.00000E+00 K＝0.00000E+00
A＝5.61347E-04 A＝-1.90958E-04
B＝-2.78540E-06 B＝3.43699E-05
C＝9.62261E-08 C＝-5.10868E-06
D＝3.20611E-07
E＝-7.42682E-09
(embodiment 24)
Table 25 shows numerical example with regard to the 24th embodiment of zoom lens of the present invention.In addition, Figure 47 is its lens pie graph.Figure 48 is its all aberration diagram.
[table 25]
f＝6.34～10.70～18.07
F＝2.20～2.96～4.23
2ω＝72.98～46.35～28.44
The face numbering R D N d ν d
1 14.634 0.72 1.82080 42.71
2 5.433 2.80 - -
3 9.861 1.73 1.75211 25.05
4 93.805 1.01 - -
5 -10.690 0.60 1.72916 54.66
6 111.312 10.02～4.53～1.15 - -
7 6.352 1.92 1.69400 56.30
8 -15.491 0.10 - -
9 11.532 0.75 1.94595 17.98
10 6.104 1.94 - -
11 -10.969 1.05 1.51823 58.96
12 -6.223 6.58～7.54～9.54 - -
13 -15.663 1.20 1.52470 56.24
14 -368.432 0.56～3.05～6.50 - -
15 ∞ 0.64 1.54892 69.76
16 ∞ 0.64 - -
17 ∞ 0.64 1.51680 64.20
18 ∞ - - -
Asphericity coefficient
The 1st the 2nd the 7th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝4.83418E-04 A＝9.08249E-05 A＝-5.88057E-04
B＝-3.76316E-05 B＝-4.08304E-05 B＝2.34603E-07
C＝1.80650E-06 C＝-1.54844E-07 C＝-2.12783E-07
D＝-3.87164E-08 D＝9.31813E-08 D＝1.84163E-0B
E＝3.27232E-10 E＝-3.03998E-09
The 8th the 13rd the 14th
K＝0.00000E+00 K＝0.00000E+00 K＝0.00000E+00
A＝7.26207E-04 A＝-4.43529E-03 A＝-4.41608E-03
B＝-5.68176E-06 B＝-2.56504E-04 B＝1.47767E-05
C＝2.14998E-07 C＝3.59018E-05 C＝3.81834E-06
D＝1.28436E-08 D＝-2.61866E-06 D＝-2.85526E-07
E＝2.56084E-08
Next, and relatively, in table 26, gather expression from each embodiment of embodiment 17 to embodiment 24, with from conditional (16) to the corresponding value of conditional (20).
[table 26]
Embodiment 17 Embodiment 18 Embodiment 19 Embodiment 20
Conditional (16) -0.56 -0.58 -0.63 -0.63
Conditional (17) 5.77 6.10 5.32 5.69
Conditional (18) -0.14 -0.13 -0.14 -0.13
Conditional (19) 0.40 0.40 0.36 0.38
Conditional (20) 21.70 23.55 24.65 24.90
Conditional (21) 1.85 1.85 1.91 1.85
Conditional (22) 1.09 1.09 1.00 1.08
Conditional (23) 0.58 0.59 0.67 0.53
Conditional (24) 0.78 0.74 0.90 0.86
Conditional (25) -0.42 -0.38 -0.44 -0.41
Conditional (26) 46.87 39.99 46.24 45.39
Conditional (27) -0.38 -0.37 -0.36 -0.36
Conditional (28) 1.03 0.93 1.11 0.96
Conditional (29) -0.81 -0.76 -0.84 -0.89
Conditional (30) -0.57 0.30 -0.64 -0.19
Embodiment 21 Embodiment 22 Embodiment 23 Embodiment 24
Conditional (16) -0.63 -0.54 -0.56 -0.64
Conditional (17) 5.66 5.52 6.02 5.20
Conditional (18) -0.14 -0.43 -0.15 -0.20
Conditional (19) 0.37 0.40 0.34 0.44
Conditional (20) 24.24 22.06 28.88 23.64
Conditional (21) 1.81 1.85 1.85 1.75
Conditional (22) 1.01 1.11 1.09 1.17
Conditional (23) 0.73 0.61 0.59 0.55
Conditional (24) 0.81 0.81 0.77 0.94
Conditional (25) -0.42 -0.41 -0.45 -0.43
Conditional (26) 51.17 44.24 47.09 39.64
Conditional (27) -0.30 -0.38 -0.32 -0.34
Conditional (28) 1.11 1.06 0.97 1.00
Conditional (29) -0.82 -0.81 -0.90 -1.02
Conditional (30) -0.37 -0.74 -0.86 -0.40
From table 26 understand like that, the numerical value relevant with each embodiment of embodiment 17 to 24 satisfies condition formula (16) to (30), and the aberration diagram from each embodiment understand such, each aberration has all obtained good correction.

Claims (18)

1, a kind of zoom lens is characterized in that,
From object side, the 1st lens combination that has negative refracting power in turn by integral body, integral body has the 2nd lens combination of positive refracting power, and whole the 3rd lens combination with negative refracting power constitutes, about becoming doubly, by the position of described the 1st lens combination and described the 2nd lens combination is moved along optical axis direction, perhaps by except moving described the 1st lens combination and described the 2nd lens combination, also moving described the 3rd lens combination, and finish, the optical power that is had about described the 1st lens combination, satisfy following conditional (1), size about the lens total system satisfies following conditional (2), in addition, the optical power that is had about described the 3rd lens combination satisfies following conditional (3):
(1)-0.8≤f w/f I≤-0.45
(2)4.5≤TL w/f w≤7.5
(3)-0.55≤f w/f III≤0
Wherein:
f w: the system-wide synthetic focal length of the lens in the wide-angle side;
f I: the synthetic focal length of the 1st lens combination;
f III: the synthetic focal length of the 3rd lens combination;
TL w: the object side of the 1st lens of the 1st lens combination from constitute wide-angle side is to the distance (wherein, the parallel plane glass part is the air scaled distance) of image planes.
2, zoom lens according to claim 1 is characterized in that,
Described the 1st lens combination, by constituting from the following in turn lens of object side: i.e. the 1st lens, it has the lens (hereinafter referred to as negative lens) of negative refracting power; The 2nd lens, it has positive refracting power (hereinafter referred to as positive lens); The 3rd lens, it is a negative lens, the optical power that is had about described the 2nd lens, satisfy following conditional (4), about the dispersing characteristic in each lens that is allocated in described the 1st lens combination, satisfy following conditional (5), in addition, satisfy following conditional (6) about the refractive index of described the 2nd lens:
(4)0.22≤f w/f 2≤0.55
(5)15≤(υ 1+υ 3)/2-υ 2
(6)1.65≤n 2
Wherein:
f 2: the focal length that constitutes the 2nd lens of the 1st lens combination;
υ 1: the Abbe number that constitutes the 1st lens of the 1st lens combination;
υ 2: the Abbe number that constitutes the 2nd lens of the 1st lens combination;
υ 3: the Abbe number that constitutes the 3rd lens of the 1st lens combination;
n 2: the 2nd lens of 1 lens combination of formation are to the refractive index of d line.
3, zoom lens according to claim 1 is characterized in that,
Described the 1st lens that constitute described the 1st lens combination are non-spherical lenses, shape about the face of described picture side satisfies following conditional (7), in addition, the relative characteristic with the shape of the face of the object side of described the 2nd lens that constitute described the 1st lens combination satisfies following conditional (8):
(7)0.4≤f w/r 2≤1.4
(8)0≤r 2/r 3≤1.5
Wherein:
r 2: the radius-of-curvature of face of picture side that constitutes the 1st lens of the 1st lens combination;
r 3: the radius-of-curvature of face of object side that constitutes the 2nd lens of the 1st lens combination.
4, zoom lens according to claim 2 is characterized in that,
Described the 1st lens that constitute described the 1st lens combination are non-spherical lenses, shape about the face of described picture side satisfies following conditional (7), in addition, the relative characteristic with the shape of the face of the object side of described the 2nd lens that constitute described the 1st lens combination satisfies following conditional (8):
(7)0.4≤f w/r 2≤1.4
(8)0≤r 2/r 3≤1.5
Wherein:
r 2: the radius-of-curvature of face of picture side that constitutes the 1st lens of the 1st lens combination;
r 3: the radius-of-curvature of face of object side that constitutes the 2nd lens of the 1st lens combination.
5, zoom lens according to claim 1 is characterized in that,
Described the 2nd lens combination, by dispose the 4th lens in turn from object side as positive lens, the 5th lens as positive lens, the 6th lens as negative lens, and as the 7th lens of positive lens and constitute, the positive synthesizing optical ability that is had about described the 4th lens and described the 5th lens satisfies following conditional (9), the negative optical power that is had about the 6th lens, satisfy following conditional (10), about being allocated in described the 4th lens that dispose in turn from object side in described the 2nd lens combination, the dispersing characteristic of described the 5th lens and described the 6th lens satisfies following conditional (11), in addition, same in the relation of the refractive index that these each lens had, satisfy following conditional (12):
(9)0.5≤f w/f 4、5≤1.5
(10)-1.5≤f w/f 6≤-0.25
(11)28≤(υ 4+υ 5)/2-υ 6
(12)(n 4+n 5)/2-n 6≤-0.24
Wherein,
f 4,5: constitute the 4th lens of the 2nd lens combination and the synthetic focal length of the 5th lens;
f 6: the focal length (wherein, being the synthetic focal length of parent spherical lens and resin part under the 6th lens constitute the situation of compound non-spherical lens) that constitutes the 6th lens of the 2nd lens combination;
υ 4: the Abbe number that constitutes the 4th lens of the 2nd lens combination;
υ 5: the Abbe number that constitutes the 5th lens of the 2nd lens combination;
υ 6: the Abbe number (wherein, constituting under the situation of compound non-spherical lens at the 6th lens is the synthetic focal length of the glass material (nitre material) of parent spherical lens) that constitutes the 6th lens of the 2nd lens combination.
n 4: constitute the refractive index of the 4th lens of the 2nd lens combination to the d line;
n 5: constitute the refractive index of the 5th lens of the 2nd lens combination to the d line;
n 6: constitute the refractive index of the 6th lens of the 2nd lens combination to the d line;
6, zoom lens according to claim 1 is characterized in that,
Constitute in the plane of refraction of each lens of described the 2nd lens combination, having a face at least is aspherical shape, and the shape about the face of the object side of described the 4th lens satisfies following conditional (13), in addition, the shape as the face of side about described the 6th lens satisfies following conditional (14):
(13)0.2≤f w/r 7≤1.0
(14)0.4≤f w/r 12≤1.6
Wherein:
r 7: the radius-of-curvature of face of object side that constitutes the 4th lens of the 2nd lens combination;
r 12: the radius-of-curvature (wherein, being under the situation of resin lens face of compound lens at the face as side of the 6th lens, is the radius-of-curvature of the boundary surface between resin and the air) of face of picture side that constitutes the 6th lens of the 2nd lens combination.
7, zoom lens according to claim 5 is characterized in that,
Constitute in the plane of refraction of each lens of described the 2nd lens combination, having a face at least is aspherical shape, and the shape about the face of the object side of described the 4th lens satisfies following conditional (13), in addition, the shape as the face of side about described the 6th lens satisfies following conditional (14):
(13)0.2≤f w/r 7≤1.0
(14)0.4≤f w/r 12≤1.6
Wherein:
r 7: the radius-of-curvature of face of object side that constitutes the 4th lens of the 2nd lens combination;
r 12: the radius-of-curvature (wherein, being under the situation of resin lens face of compound lens at the face as side of the 6th lens, is the radius-of-curvature of the boundary surface between resin and the air) of face of picture side that constitutes the 6th lens of the 2nd lens combination.
8, zoom lens according to claim 1 is characterized in that,
Described the 3rd lens combination is made of the 8th lens as negative lens, and the shape about the face of the object side of described the 8th lens satisfies following conditional (15):
(15)-2.0≤f w/r 15≤0.2
Wherein:
r 15: the radius-of-curvature of face of object side that constitutes the 8th lens of the 3rd lens combination.
9, a kind of zoom lens is characterized in that,
The 1st lens combination that has negative refracting power from object side in turn by integral body, integral body has the 2nd lens combination of positive refracting power, and whole the 3rd lens combination with negative refracting power constitutes, described the 1st lens combination is by 1st lens of configuration as negative lens, the 2nd lens as positive lens, and as these three pieces of lens of the 3rd lens of negative lens and constitute, described the 2nd lens combination is by 4th lens of configuration as positive lens, the 5th lens as positive lens, the 6th lens as negative lens, and as these 4 pieces on the 7th lens of positive lens and constitute, described the 3rd lens combination constitutes by the 8th lens of configuration as negative lens, about becoming doubly, by move the position of described the 1st lens combination and described the 2nd lens combination along optical axis direction, perhaps by except moving described the 1st lens combination and described the 2nd lens combination, also moving the position of described the 3rd lens combination, and finish, the positive and negative formation of the optical power of each lens in the lens total system, be negative, just, negative, just, just, negative, just, negative such, between described the 4th lens and described the 5th lens to be border and symmetrical structure, the amount for optical power also becomes the distribution of summary to becoming equally.
10, a kind of video camera, its mounting requirement 1 described zoom lens of having the right.
11, a kind of video camera, its mounting requirement 9 described zoom lens of having the right.
12, a kind of zoom lens is characterized in that,
The 2nd lens combination and whole the 3rd lens combination with negative refracting power that the 1st lens combination, the integral body that has a negative refracting power by integral body in turn from object side has positive refracting power constitute, described the 1st lens combination integral body has negative refracting power, and constitute: the 1st lens by disposing following lens, it is the lens (hereinafter referred to as negative lens) with negative refracting power, and is to the protruding meniscus shape of object side; The 2nd lens, it is the lens (hereinafter referred to as positive lens) with positive refracting power, and is to the protruding meniscus shape of object side; And the 3rd lens, it is a negative lens, described the 2nd lens combination integral body has positive refracting power, and by 4th lens of configuration as positive lens, be negative lens and be the 5th lens to the protruding meniscus shape of object side, and as the 6th lens of positive lens and constitute, described the 3rd lens combination integral body has negative refracting power, and constitute as the 7th lens of negative lens by configuration, about becoming doubly, by move the position of described the 1st lens combination and described the 2nd lens combination along optical axis direction, perhaps by except moving described the 1st lens combination and described the 2nd lens combination, also moving the position of described the 3rd lens, and finish, the optical power that is had about described the 1st lens combination satisfies following conditional (16), size about the lens total system satisfies following conditional (17), in addition, the optical power that is had about described the 3rd lens combination satisfies following conditional (18):
(16)-0.8≤f w/f I≤-0.4
(17)4.5≤TL w/f w≤7.5
(18)-0.6≤f w/f III≤0
Wherein,
f w: the system-wide synthetic focal length of the lens in the wide-angle side;
f I: the synthetic focal length of the 1st lens combination;
f III: the synthetic focal length of the 3rd lens combination;
TL w: the distance (wherein, the parallel plane glass part is the air scaled distance) of image planes is arrived in the object side that constitutes the 1st lens of the 1st lens combination in the wide-angle side.
13, zoom lens according to claim 12 is characterized in that,
Described the 1st lens that constitute described the 1st lens combination are non-spherical lenses, the optical power that is had about described the 2nd lens, satisfy following relational expression (19), about the dispersing characteristic in each lens that is allocated in the 1st lens combination, satisfy following conditional (20), refractive index about described the 2nd lens satisfies following conditional (21), shape about the face of the picture side of described the 1st lens, satisfy following conditional (22), in addition, relative characteristic about the shape of the face of the object side of the face of the picture side of described the 1st lens and described the 2nd lens, satisfy following conditional (23):
(19)0.25≤f w/f 2≤0.55
(20)15≤(υ 1+υ 3)/2-υ 2
(21)1.65≤n 2
(22)0.8≤f w/r 2≤1.5
(23)0.45≤r 2/r 3≤0.85
Wherein:
f 2: the focal length that constitutes the 2nd lens of the 1st lens combination;
υ 1: the Abbe number that constitutes the 1st lens of the 1st lens combination;
υ 2: the Abbe number that constitutes the 2nd lens of the 1st lens combination;
υ 3: the Abbe number that constitutes the 3rd lens of the 1st lens combination;
n 2: constitute the refractive index of the 2nd lens of the 1st lens combination to the d line;
r 2: the radius-of-curvature of face of picture side that constitutes the 1st lens of the 1st lens combination;
r 3: the radius-of-curvature of face of object side that constitutes the 2nd lens of the 1st lens combination.
14, zoom lens according to claim 12 is characterized in that,
Constitute in the plane of refraction of each lens of described the 2nd lens combination, at least one plane of refraction is an aspherical shape, the positive optical power that is had about described the 4th lens satisfies following conditional (24), the negative optical power that is had about described the 5th lens satisfies following conditional (25), satisfy following conditional (26) about the dispersing characteristic that is distributed in each lens that constitutes described the 2nd lens combination, similarly in the relation of the refractive index that these each lens had, satisfy following conditional (27), shape about the face of the object side of described the 4th lens satisfies following conditional (28), in addition, relativeness about the shape of the face of the picture side of the face of the object side of described the 4th lens and described the 6th lens, satisfy following conditional (29):
(24)0.65≤f w/f 4≤1.05
(25)-0.5≤f w/f 5≤-0.3
(26)25≤(υ 4+υ 6)/2-υ 5
(27)-0.45≤(n 4+n 6)/2-n 5≤-0.20
(28)0.8≤f w/r 7≤1.3
(29)-1.1≤r 7/r 12≤-0.7
Wherein:
f 4: the focal length that constitutes the 4th lens of the 2nd lens combination;
f 5: the focal length that constitutes the 5th lens of the 2nd lens combination;
υ 4: the Abbe number that constitutes the 4th lens of the 2nd lens combination;
υ 5: the Abbe number that constitutes the 5th lens of the 2nd lens combination;
υ 6: the Abbe number that constitutes the 6th lens of the 2nd lens combination;
n 4: constitute the refractive index of the 4th lens of the 2nd lens combination to the d line;
n 5: constitute the refractive index of the 5th lens of the 2nd lens combination to the d line;
n 6: constitute the refractive index of the 6th lens of the 2nd lens combination to the d line;
r 7: the radius-of-curvature of face of object side that constitutes the 4th lens of the 2nd lens combination;
r 12: the radius-of-curvature of face of picture side that constitutes the 6th lens of the 2nd lens combination.
15, according to the zoom lens of claim 12, it is characterized in that,
Shape about the face of the object side of described the 7th lens that constitute described the 3rd lens combination, satisfy following conditional (30):
(30)-1.2≤f w/r 13≤0.4
Wherein:
r 13: the radius-of-curvature of face of object side that constitutes the 7th lens of the 3rd lens combination.
16, a kind of zoom lens is characterized in that,
The 1st lens combination that has negative refracting power from object side in turn by integral body, integral body has the 2nd lens combination of positive refracting power, and whole the 3rd lens combination with negative refracting power constitutes, described the 1st lens combination by configuration as negative lens and be the 1st lens of the meniscus shape that protrudes to object side, as positive lens and be the 2nd lens to the protruding meniscus shape of object side, and as these three pieces of lens of the 3rd lens of negative lens and constitute, described the 2nd lens combination is by 4th lens of configuration as positive lens, as negative lens and be the 5th lens to the protruding meniscus shape of object side, as these three pieces of lens of the 6th lens of positive lens and constitute, described the 3rd lens combination constitutes by the 7th lens of configuration as negative lens, about becoming doubly, by move the position of described the 1st lens combination and described the 2nd lens combination along optical axis direction, perhaps by except moving described the 1st lens combination and described the 2nd lens combination, also moving the position of described the 3rd lens combination, and finish, the positive and negative formation of the optical power of each lens in the lens total system, be negative, just, negative, just, negative, just, negative such, with described the 4th lens is center and symmetrical structure, also becomes the distribution of summary symmetry equally for the amount of optical power.
17, a kind of video camera, its mounting requirement 12 described zoom lens of having the right.
18, a kind of video camera, its mounting requirement 16 described zoom lens of having the right.
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