Wide-angle zoom lens system

Claim 2

A wide-angle zoom lens system comprising a divergent lens group and a convergent lens group in the order from the object side, both of said groups being movable on the optical axis of the lens system to vary the air space between the groups so that the magnification of the image is variable while the image plane is maintained at a fixed position, the divergent lens group including four air-spaced components which are, in the order from the object side, a first positive component with the more curved surface facing the object side, a first negative component with the more curved surface facing the image side, a second negative component with the more curved surface facing the image side and a first positive meniscus component convex to the object side, said first positive component and said first negative component defining therebetween an air chamber having convergent power, said first negative component and said second negative component defining therebetween an air chamber having divergent power with its more curved surface facing the object side, the axial space between said second negative component and said first positive meniscus component being greater than the space between said first positive component and said first negative component, said covergent lens group including at least four positive components and a negative component, all components being separated from one another.

Claim 3

A wide-angle zoom lens system according to Claim 1, wherein said optical system satisfies the following conditions: ##EQU3## wherein f 11 represents the focal length of the first positive component, f 1 represents the focal length of the divergent lens group, D F represents the air space between the second negative component and the first positive meniscus component, and R 4 and R 6 represent the curvature radii of rear surfaces of said first negative component and said second negative component, respectively.

Claim 4

A wide-angle zoom lens system according to claim 2, wherein said convergent lens group includes in the order from the object side a second positive component, a second positive meniscus component convex to the object side, a third positive meniscus component convex to the object side, a third negative component and a third positive component.

Claim 5

A wide-angle zoom lens system according to claim 3, wherein said optical system further satisfies the following conditions. ##EQU4## wherein f 1 and f 2 represent the focal length of the divergent group and of the convergent group, respectively, f 1i and f 2i represent the focal length of each component of the divergent group and of the convergent group, respectively, and the subscript i represents the order of each component from the object side.

Claim 6

A wide-angle zoom lens system according to claim 4, wherein said optical system further satisfies the following conditions: 0.4<Q 11 <2.0 0.8<|q 12 |<1.5 0.9<|q 13 |<2.2 2.0<q 14 <6.0 0.1<q 21 <0.7 1.0<q 22 <2.5 2.0<q 23 <8.0 0.7<|q 24 |<1.5 0≦|q 25 |<1.0 wherein Q 1i and Q 2i represent the shape factor of each component of the divergent group and of the convergent group, respectively, and the subscript i represents the order of each component from the object side, shape factor Q being defined as ##EQU5## where r R and r F represent the radius of curvature of the rearmost and the foremost surface of each component respectively.

Claim 7

A wide-angle zoom lens system according to claim 5, having the numerical data as follows: __________________________________________________________________________ f=100-137.404-190.975 F/3.5 Bf=121.0703-146.391-183.869 __________________________________________________________________________ r.sub.1 =222.515 d.sub.1 =22.8 n.sub.1 =1.60311 ν.sub.1 =60.7 r.sub.2 =-1136.472 d.sub.2 =1.9 r.sub.3 =6006.076 d.sub.3 =4.2 n.sub.2 =1.6968 ν.sub.2 =55.6 f.sub.1 =-166.3988 r.sub.4 =66.208 d.sub.4 =18.9 r.sub.5 =638.292 d.sub.5 =4.2 n.sub.3 =1.713 ν.sub.3 =53.9 r.sub.6 =157.237 d.sub.6 =15.8 r.sub.7 =102.236 d.sub.7 =10.8 n.sub.4 =1.74077 ν.sub.4 =27.7 r.sub.8 =198.108 d.sub.8 =91.3324 39.3014 0.2804 r.sub.9 =183.442 d.sub.9 =12.5 n.sub.5 =1.52 ν.sub.5 =70.1 r.sub.10 =-619.365 d.sub.10 =0.3 r.sub.11 =81.072 d.sub.11 =13.6 n.sub.6 =1.52 ν.sub.6 =70.1 r.sub.12 =919.732 d.sub.12 =0.3 f.sub.2 =114.8669 r.sub.13 =56.898 d.sub.13 =12.5 n.sub.7 =1.52 ν.sub.7 =70.1 r.sub.14 =97.450 d.sub.14 =10.8 r.sub.15 =1417.995 d.sub.15 =4.2 n.sub.8 =1.80518 ν.sub.8 =25.5 r.sub.16 =49.4 d.sub.16 =14.4 r.sub.17 =193.094 d.sub.17 =10.5 n.sub.9 =1.64831 ν.sub.9 =33.8 r.sub.18 =-126.146 __________________________________________________________________________ wherein r 1 , r 2 , r 3 . . . are the curvature radii of the successive lenses as viewed from the object side, d 1 , d 2 . . . are the center thicknesses and the air spaces between the successive lenses, n 1 , n 2 , . . . and ν 1 , ν 2 . . . are the refractive indices and the Abbe numbers of the successive lenses, respectively, f 1 is the focal length of the divergent lens group and f 2 is the focal length of the convergent lens group.

Claim 8

A wide-angle zoom lens system according to claim 5, having the numerical data as follows: __________________________________________________________________________ f=100- 141.421-200.0 F/3.5 Bf=121.04-148.469-187.254 __________________________________________________________________________ r.sub.1 =206.703 d.sub.1 =18.6 n.sub.1 =1.62041 ν.sub.1 =60.3 r.sub.2 =769.754 d.sub.2 =6.3 r.sub.3 =671.617 d.sub.3 =10.6 n.sub.2 =1.80454 ν.sub.2 =39.5 r.sub.4 =-971.891 d.sub.4 =4.3 n.sub.3 =1.67003 ν.sub.3 =47.2 f.sub.1 =-171.264 r.sub.5 =65.723 d.sub.5 =19.4 r.sub.6 =6124.694 d.sub.6 =4.3 n.sub.4 =1.62041 ν.sub.4 =60.3 r.sub.7 =205.649 d.sub.7 =15.7 r.sub.8 =96.714 d.sub.8 =8.6 n.sub.5 =1.80518 ν.sub.5 =25.5 r.sub.9 =141.027 d.sub.9 =99.8316˜42.9479˜2.7253 r.sub.10 =311.7 d.sub.10 =7.1 n.sub.6 =1.6968 ν.sub.6 =55.6 r.sub.11 =-394.694 d.sub.11 =0.3 r.sub.12 =83.54 d.sub.12 =9.4 n.sub.7 =1.62041 ν.sub.7 =60.3 r.sub.13 =216.683 d.sub.13 =0.3 f.sub. 2 =113.4 r.sub.14 =61.466 d.sub.14 =9.7 n.sub.8 =1.60311 ν.sub.8 =60.7 r.sub.15 =110.186 d.sub.15 11.1 r.sub.16 =540.08 d.sub.16 =8.9 n.sub.9 =1.80518 ν.sub.9 =25.5 r.sub.17 =51.494 d.sub.17 =16.0 r.sub.18 =258.971 d.sub.18 =8.9 n.sub.10 =1.70154 ν.sub.10 =41.1 r.sub.19 =-137.347 __________________________________________________________________________ wherein r 1 , r 2 , r 3 . . . are the curvature radii of the successive lenses as viewed from the object side, d 1 , d 2 . . . are the center thicknesses and the air spaces between the successive lenses, n 1 , n 2 . . . and ν 1 , ν 2 . . . are the refractive indices and the Abbe numbers of the successive lenses, respectively, f 1 is the focal length of the divergent lens group and f 2 is the focal length of the convergent lens group.

Claim 9

A wide-angle zoom lens system according to claim 5, having the numerical data as follows: __________________________________________________________________________ f=100-137.4-191.0 F/3.5 Angle of view 62°-34° Bf=121.28-147.10-184.08 __________________________________________________________________________ r.sub.1 =171.693 d.sub.1 =22.8 n.sub.1 =1.60323 ν.sub.1 =42.5 r.sub.2 =-2879.172 d.sub.2 =1.9 r.sub.3 =2776.004 d.sub.3 =4.2 n.sub.2 =1.67790 ν.sub.2 =55.5 f.sub.1 =-166.39 r.sub.4 =66.347 d.sub.4 =18.9 r.sub.5 =496.166 d.sub.5 =4.2 n.sub.3 =1.7130 ν.sub.3 =53.9 r.sub.6 =118.458 d.sub.6 =15.8 r.sub.7 =94.690 d.sub.7 =10.8 n.sub.4 =1.59507 ν.sub.4 =35.6 r.sub.8 =227.424 d.sub.8 =92.86-40.81-1.80 r.sub.9 =202.204 d.sub.9 =9.7 n.sub.5 =1.62041 ν.sub.5 =60.3 r.sub.10 =-202.204 d.sub.10 =2.8 n.sub.6 =1.80518 ν.sub.6 =25.5 r.sub.11 =-400.225 d.sub. 11 =0.3 r.sub.12 =73.964 d.sub.12 =13.6 n.sub.7 =1.51118 ν.sub.7 =50.9 r.sub.13 =682.897 d.sub.13 =0.3 f.sub.2 =114.87 r.sub.14 =57.583 d.sub.14 =12.5 n.sub.8 =1.51680 ν.sub.8 =64.2 r.sub.15 =77.700 d.sub.15 =10.8 r.sub.16 =-1029.495 d.sub.16 =4.2 n.sub.9 =1.80518 ν.sub.9 =25.5 r.sub.17 =51.911 d.sub.17 =14.4 r.sub.18 =179.496 d.sub.18 =10.5 n.sub.10 =1.64831 ν.sub.10 =33.8 r.sub.19 =-108.731 __________________________________________________________________________ wherein r 1 , r 2 , r 3 . . . are the curvature radii of the successive lenses as viewed from the object side, d 1 , d 2 . . . are the center thicknesses and the air spaces between the successive lenses, n 1 , n 2 . . . and ν 1 , ν 2 . . . are the refractive indices and the Abbe numbers of the successive lenses, respectively, f 1 is the focal length of the divergent lens group and f 2 is the focal length of the convergent lens group.

Claim 10

A wide-angle zoom lens system according to claim 5, having the numerical data as follows: __________________________________________________________________________ f=100-137.404-190.975 F/3.5 Bf=120.761-146.581-183.561 __________________________________________________________________________ r.sub.1 =194.236 d.sub.1 =19.4 n.sub.1 =1.60311 ν.sub.1 =60.7 r.sub.2 =-2352.847 d.sub.2 =3.3 f.sub.1 =-166.3988 r.sub.3 =1956.251 d.sub.3 =4.2 n.sub.2 =1.6935 ν.sub.2 =53.4 r.sub.4 =67.296 d.sub.4 =18.9 r.sub.5 =578.411 d.sub.5 =8.3 n.sub.3 =1.71736 ν.sub.3 =29.5 r.sub.6 =-1049.234 d.sub.6 =4.2 n.sub.4 =1.72 ν.sub.4 =50.3 r.sub.7 =154.167 d.sub.7 =17.0 r.sub.8 =99.498 d.sub.8 =10.8 n.sub.5 =1.61293 ν.sub.5 =36.9 r.sub.9 =197.219 d.sub.9 =91.2871˜39.2561˜0.2350 r.sub.10 =169.87 d.sub.10 =12.5 n.sub.6 =1.52 ν.sub.6 =70.1 r.sub.11 =-427.556 d.sub.11 =0.3 r.sub.12 =79.709 d.sub. 12 =12.5 n.sub.7 =1.52 ν.sub.7 =70.1 r.sub.13 =337.201 d.sub.13 =0.3 f.sub.2 =114.8669 r.sub.14 =55.199 d.sub.14 =12.5 n.sub.8 =1.52 ν.sub.8 =70.1 r.sub.15 =89.146 d.sub.15 =10.8 r.sub.16 =457.998 d.sub.16 =4.2 n.sub.9 =1.80518 ν.sub.9 =25.5 r.sub.17 =47.719 d.sub.17 =14.4 r.sub.18 =161.673 d.sub.18 =10.5 n.sub.10 =1.64831 ν.sub.10 =33.8 r.sub.19 =-151.051 __________________________________________________________________________ wherein r 1 , r 2 , r 3 . . . are the curvature radii of the successive lenses as viewed from the object side, d 1 , d 2 . . . are the center thicknesses and the air spaces between the successive lenses, n 1 , n 2 . . . and v 1 , v 2 . . . are the refractive indices and the Abbe numbers of the successive lenses, respectively, f 1 is the focal length of the divergent lens group and f 2 is the focal length of the convergent lens group.

Claim 11

A wide-angle zoom lens system according to claim 5, having the numerical data as follows: __________________________________________________________________________ f=100-137.404-190.975 F/3.5 Bf=121.7277-147.548-184.528 __________________________________________________________________________ r.sub.1 =186.079 d.sub.1 =18.6 n.sub.1 =1.60311 ν.sub.1 =60.7 r.sub.2 =8785.220 d.sub.2 =3.9 r.sub.3 =847.055 d.sub.3 =4.2 n.sub.2 =1.6935 ν.sub.2 =53.4 r.sub.4 =66.572 d.sub.4 =18.9 f.sub.1 =-166.3988 r.sub.5 =562.782 d.sub.5 =4.2 n.sub.3 =1.713 ν.sub.3 =53.9 r.sub.6 =128.685 d.sub.6 =16.0 r.sub.7 =97.596 d.sub.7 =16.7 n.sub.4 =1.59507 ν.sub.4 =35.6 r.sub.8 =6520.952 d.sub.8 =2.5 n.sub.5 =1.58913 ν.sub.5 =61.2 r.sub.9 =239.914 d.sub.9 =91.4175˜39.3864˜0.3654 r.sub.10 =274.822 d.sub.10 =9.7 n.sub.6 =1.62041 ν.sub.6 =60.3 r.sub.11 =-245.372 d.sub.11 =2.8 n.sub.7 =1.80518 ν.sub.7 =25.5 r.sub.12 =-527.7 d.sub.12 =0.3 r.sub.13 =78.69 d.sub.13 =13.6 n.sub.8 =1.51454 ν.sub.8 =54.6 r.sub.14 =776.541 d.sub.14 =0.3 f.sub.2 =114.8669 r.sub.15 =53.662 d.sub.15 =12.5 n.sub.9 =1.51823 ν.sub.9 =59.0 r.sub.16 =98.753 d.sub.16 =11.4 r.sub.17 =556.455 d.sub.17 =3.6 n.sub.10 =1.80518 ν.sub.10 =25.5 r.sub.18 =46.886 d.sub.18 =14.4 r.sub.19 =157.306 d.sub.19 =10.5 n.sub.11 =1.66446 ν.sub.11 =35.9 r.sub.20 =-157.664 __________________________________________________________________________ wherein r 1 , r 2 , r 3 . . . are the curvature radii of the successive lenses as viewed from the object side, d 1 , d 2 . . . are the center thicknesses and the air spaces between the successive lenses, n 1 , n 2 . . . and ν 1 , ν 2 . . . are the refractive indices and the Abbe numbers of the successive lenses, respectively, f 1 is the focal length of the divergent lens group and f 2 is the focal length of the convergent lens group.

Claim 12

A wide-angle zoom lens system according to claim 5, having the numerical data as follows: __________________________________________________________________________ f=100-137.404-190.975 F/3.5 Bf=118.757-144.577-181.557 __________________________________________________________________________ r.sub.1 =243.195 d.sub.1 =22.8 n.sub.1 =1.60311 ν.sub.1 =60.7 r.sub.2 =-800.7 d.sub.2 =1.9 r.sub.3 =-3010.471 d.sub.3 =4.2 n.sub.2 =1.6968 ν.sub.2 =55.6 r.sub.4 =67.127 d.sub.4 =18.9 f.sub.1 =-166.3988 r.sub.5 =640.572 d.sub.5 =4.2 n.sub.3 =1.713 ν.sub.3 =53.9 r.sub.6 =165.485 d.sub.6 =15.8 r.sub.7 =105.477 d.sub.7 =10.8 n.sub.4 =1.74077 ν.sub.4 =27.7 r.sub.8 =211.185 d.sub.8 =91.158˜39.1274˜0.1063 r.sub.9 =198.813 d.sub.9 =12.5 n.sub.5 =1.52 ν.sub.5 =70.1 r.sub.10 =-294.505 d.sub.10 =0.3 r.sub.11 =78.865 d.sub.11 =13.0 n.sub.6 =1.52 ν.sub.6 =70.1 r.sub.12 =449.942 d.sub.12 =0.3 r.sub.13 =54.224 d.sub.13 =11.0 n.sub.7 =1.52 ν.sub.7 =70.1 f.sub.2 =114.8669 r.sub.14 =89.348 d.sub.14 =10.8 r.sub.15 =443.432 d.sub.15 =4.2 n.sub.8 =1.80518 ν.sub.8 =25.5 r.sub.16 =47.494 d.sub.16 =16.6 r.sub.17 =232.021 d.sub.17 =2.8 n.sub.9 =1.6516 ν.sub.9 =58.5 r.sub.18 =207.251 d.sub.18 =7.8 n.sub.10 =1.61293 ν.sub.10 =36.9 r.sub.19 =-127.066 __________________________________________________________________________ wherein r 1 , r 2 , r 3 . . . are the curvature radii of the successive lenses as viewed from the object side, d 1 , d 2 . . . are the center thicknesses and the air spaces between the successive lenses, n 1 , n 2 . . . and ν 1 , ν 2 . . . are the refractive indices and the Abbe numbers of the successive lenses, respectively, f 1 is the focal length of the divergent lens group and f 2 is the focal length of the convergent lens group.

Claim 13

A wide-angle zoom lens system according to claim 3, wherein said third positive component includes a positive meniscus component having its convex surface facing the image side and a positive component.

Claim 14

a Wide-angle zoom lens system according to claim 12, wherein said optical system further satisfied the following conditions: ##EQU6## wherein f 1 and f 2 represent the focal length of the divergent group and of the convergent group, respectively, f 1i and f 2i represent the focal length of each component of the divergent group and of the convergent group, respectively, and the subscript i represents the order of each component from the object side.

Claim 15

A wide-angle zoom lens system according to claim 13, wherein said optical system further satisfies the following conditions: 0.8<Q 11 <1.5 1.0<|q 12 |<1.8 1.3<|q 13 |<2.5 2.0<q 14 <5.0 0.3<q 21 <1.0 0.1<q 22 <1.6 2.0<q 23 <7.0 0.3<|q 24 |<0.7 1.2<q 25 <2.5 0.3<q 26 <1.5 wherein Q 1i and Q 2i represent the shape factor of each component of the divergent group and of the convergent group, respectively, the subscript i represents the order of each component from the object side, shape factor Q being defined as ##EQU7## r R and r F represent the radius of curvature of the rearmost and the foremost surface of each component, respectively.

Claim 16

A wide-angle zoom lens system according to claim 14, having the numerical data as follows: __________________________________________________________________________ f=100-137.8-190.3 Bf-134.952-164.163-204.768 __________________________________________________________________________ r.sub.1 =418.897 d.sub.1 =23.7 η.sub.1 =1.51835 ν.sub.1 =60.3 r.sub.2 =5236.216 d.sub.2 =1.4 η.sub.2 =1. r.sub.3 =394.601 d.sub.3 =5.2 η.sub.3 =1.713 ν.sub.2 =53.9 r.sub.4 =87.135 d.sub.4 =27.6 η.sub.4 =1. f.sub.1 =-174.541 r.sub.5 =436.517 d.sub.5 =13.3 η.sub.5 =1.713 ν.sub.3 =53.9 r.sub.6 =121.243 d.sub.6 =22.3 η.sub.6 =1. r.sub.7 =118.688 d.sub.7 =14.7 η.sub.7 =1.71736 ν.sub.4 =29.5 r.sub.8 =232.016 η.sub.8 =1. d.sub.8 =119.0764˜54.487˜7.3048 r.sub.9 =179.533 d.sub.9 =19.2 η.sub.9 =1.52 ν.sub.5 =70.1 r.sub.10 =-1017.100 d.sub.10 =0.3 η.sub.10 =1. r.sub.11 = 83.779 d.sub.11 =25.1 η.sub.11 =1.52 ν.sub.6 =70.1 r.sub.12 =527.112 d.sub.12 =0.3 η.sub.12 =1. r.sub.13 =102.344 d.sub.13 =15.0 η.sub.13 =1.60729 ν.sub.7 =59.5 r.sub.14 =144.606 d.sub.14 =12.6 η.sub.14 =1. f.sub.2 =134.988 r.sub.15 =-237.375 d.sub.15 =8.0 η.sub.15 =1.80518 ν.sub.8 =25.5 r.sub.16 =76.798 d.sub.16 =8.4 η.sub.16 =1. r.sub.17 =-446.359 d.sub.17 =12.2 η.sub.17 =1.59551 ν.sub.9 =39.2 r.sub.18 =-103.649 d.sub.18 =0.3 η.sub.18 =1. r.sub.19 =163.810 d.sub.19 =7.7 η.sub.19 =1.62606 ν.sub.10 =39.1 r.sub.20 =-742.982 __________________________________________________________________________ wherein r 1 , r 2 , r 3 . . . are the curvature radii of the successive lenses as viewed from the object side, d 1 , d 2 . . . are the center thicknesses and the air spaces between the successive lenses, η 1 , η 2 . . . and ν 1 , ν 2 . . . are the refractive indices and the Abbe numbers of the successive lenses, respectively, f 1 is the focal length of the divergent lens group and f 2 is the focal length of the convergent lens group.

Claim 17

A wide-angle zoom lens system according to claim 14, having the numerical data as follows: __________________________________________________________________________ f=100-137.777-190.291 Bf=132.526-161.737-202.342 __________________________________________________________________________ r.sub.1 =406.33 d.sub.1 =24.8 η.sub.1 =1.59507 ν.sub.1 =35.6 r.sub.2 =17519.192 d.sub.2 =2.1 η.sub.2 =1. r.sub.3 =464.264 d.sub.3 =4.5 η.sub.3 =1.713 ν.sub.2 =53.9 r.sub.4 =88.368 d.sub.4 =23.4 ν.sub.4 =1. f.sub.1 =-174.541 r.sub.5 =332.849 d.sub.5 =4.2 η.sub.5 =1.713 ν.sub.3 =53.9 r.sub.6 =120.856 d.sub.6 =32.1 η.sub.6 =1. r.sub.7 =119.483 d.sub.7 =14.7 η.sub.7 =1.68893 ν.sub.4 =31.1 r.sub.8 =203.329 η.sub.8 =1. d.sub.8 =114.3882˜49.7987˜2.61650 r.sub.9 =193.841 d.sub.9 =19.2 η.sub.9 =1.50032 ν.sub.5 =81.9 r.sub.10 =-644.406 d.sub.10 =0.3 η.sub.10 =1. r.sub.11 =82.586 d.sub.11 =25.1 η.sub.11 =1.50032 ν.sub.6 =81.9 f.sub.2 =134.988 r.sub.12 =663.254 d.sub.12 =0.3 η.sub.12 =1. r.sub.13 =88.963 d.sub.13 =15.0 η.sub.13 =1.51833 ν.sub.7 =59.0 r.sub.14 =128.497 d.sub.14 =12.6 η.sub.14 =1. r.sub.15 =-210.147 d.sub.15 =5.9 η.sub.15 =1.80518 ν.sub.8 =25.5 r.sub.16 =-104.724 d.sub.16 =2.8 η.sub.16 =1.74 ν.sub.9 =28.2 r.sub.17 =69.816 d.sub.17 =8.7 η.sub.17 =1. r.sub.18 =-233.727 d.sub.18 =11.0 η.sub.18 =1.50137 ν.sub.10 =56.5 r.sub.19 =-80.834 d.sub.19 =0.3 η.sub.19 =1. r.sub.20 =120.289 d.sub.20 =9.4 η.sub.20 =1.59507 ν.sub.11 =35.6 r.sub.21 = 2627.557 __________________________________________________________________________ wherein r 1 , r 2 , r 3 . . . are the curvature radii of the successive lenses as viewed from the object side, d 1 , d 2 . . . are the center thicknesses and the air spaces between the successive lenses, η 1 , η 2 . . . and ν 1 , ν 2 . . . are the refractive indices and the Abbe numbers of the successive lenses, respectively, f 1 is the focal length of the divergent lens group and f 2 is the focal length of the convergent lens group.

Claim 18

A wide-angle zoom lens system according to claim 14, having the numerical data as follows: __________________________________________________________________________ f=100-137.78-190.29 Bf=131.128-160.339-200.945 __________________________________________________________________________ r.sub.1 =427.624 d.sub.1 =24.8 η.sub.1 =1.5907 ν.sub.1 =35.6 r.sub.2 =17519.167 d.sub.2 =2.1 η.sub.2 =1. r.sub.3 =443.261 d.sub.3 =4.5 η.sub.3 =1.713 ν.sub.2 =53.9 f.sub.1 =-174.541 r.sub.4 =88.368 d.sub.4 =23.4 η.sub.4 =1. r.sub.5 =332.849 d.sub.5 =4.2 η.sub.5 =1.713 ν.sub.3 =53.9 r.sub.6 =120.856 d.sub.6 =32.1 η.sub.6 =1. r.sub.7 =119.483 d.sub.7 =14.7 η.sub.7 =1.67270 ν.sub.4 =32.2 r.sub.8 =207.558 η.sub.8 =1. d.sub.8 =114.2727˜49.6832˜2.5010 r.sub.9 =193.841 d.sub.9 =19.2 η.sub.9 =1.50032 ν.sub.5 =81.9 r.sub.10 =-644.061 d.sub.10 = 3.5 η.sub.10 =1. r.sub.11 =82.586 d.sub.11 =25.1 η.sub.11 =1.50032 ν.sub.6 =81.9 f.sub.2 =134.988 r.sub.12 =663.254 d.sub.12 =3.5 η.sub.12 =1. r.sub.13 =95.578 d.sub.13 =15.0 η.sub.13 =1.51118 ν.sub.7 =50.9 r.sub.14 =173.745 d.sub.14 =12.6 η.sub.14 =1. r.sub.15 =-201.126 d.sub.15 =5.9 η.sub.15 =1.80518 ν.sub.8 =25.5 r.sub.16 =-104.724 d.sub.16 =2.8 η.sub.16 =1.74 ν.sub.9 =28.2 r.sub.17 =69.816 d.sub.17 =8.7 η.sub.17 =1. r.sub.18 =-338.609 d.sub.18 =4.2 η.sub.18 =1.67790 ν.sub.10 =55.5 r.sub.19 =837.795 d.sub.19 =8.7 η.sub.19 =1.59507 ν.sub.11 =56.5 r.sub.20 =-79.565 d.sub.20 =3.5 η.sub.20 =1. r.sub.21 =125.025 d.sub.21 =9.4 η.sub.21 =1.59507 ν.sub.12 =35.6 r.sub.22 =1151.140 η.sub.22 =1. __________________________________________________________________________ wherein r 1 , r 2 , r 3 . . . are the curvature radii of the successive lenses as viewed from the object side, d 1 , d 2 . . . are the center thicknesses and the air spaces between the successive lenses, η 1 , η 2 . . . and ν 1 , ν 2 . . . are the refractive indices and the Abbe numbers of the successive lenses, respectively, f 1 is the focal length of the divergent lens group and f 2 is the focal length of the convergent lens group.

Claim 19

A wide-angle zoom lens system according to claim 14, having the numerical data as follows: __________________________________________________________________________ f=100-137.8-190.3 Bf=134.829-164.039-204.645 __________________________________________________________________________ r.sub.1 =366.919 d.sub.1 =23.7 η.sub.1 =1.60311 ν.sub.1 =60.7 r.sub.2 =9892.783 d.sub.2 =1.4 η.sub.2 =1. r.sub.3 =446.126 d.sub.3 =5.2 η.sub.3 =1.713 ν.sub.2 =53.9 r.sub.4 =86.883 d.sub.4 =27.6 η.sub.4 =1. f.sub.1 =-174.541 r.sub.5 =457.296 d.sub.5 =13.3 η.sub.5 =1.713 ν.sub.3 =53.9 r.sub.6 =120.826 d.sub.6 =22.3 η.sub.6 =1. r.sub.7 =117.621 d.sub.7 =14.7 η.sub.7 =1.68893 ν.sub.4 =31.1 r.sub.8 =239.700 η.sub.8 =1. d.sub.8 =118.0228˜53.4333˜6.2511 r.sub.9 =179.532 d.sub.9 =19.2 η.sub.9 =1.52 ν.sub.5 =70.1 r.sub.10 =-1012.684 d.sub.10 =0.3 η.sub.10 =1. r.sub.11 =83.430 d.sub.11 =20.9 η.sub.11 =1.52 ν.sub.6 =70.1 r.sub.12 =-698.162 d.sub.12 =4.2 η.sub.12 =1.68893 ν.sub.7 =31.1 f.sub.2 =134.988 r.sub.13 =991.505 d.sub.13 =0.3 η.sub.13 =1. r.sub.14 =102.344 d.sub.14 =15.0 η.sub.14 =1.58144 ν.sub.8 =40.8 r.sub.15 =149.038 d.sub.15 =12.6 η.sub.15 =1. r.sub.16 =-214.336 d.sub.16 =5.2 η.sub.16 =1.80518 ν.sub.9 =25.5 r.sub.17 =-166.351 d.sub.17 =2.8 η.sub.17 =1.74 ν.sub.10 =28.2 r.sub.18 =72.853 d.sub.18 =7.0 η.sub.18 =1. f.sub.2 =134.988 r.sub.19 =-260.065 d.sub.19 =12.2 η.sub.19 =1.50137 ν.sub.11 =56.5 r.sub.20 =-94.95 d.sub.20 =0.3 η.sub.20 =1. r.sub.21 =156.004 d.sub.21 =7.7 η.sub. 21 =1.62606 ν.sub.12 =39.1 r.sub.22 =-475.602 η.sub.22 =1. __________________________________________________________________________ wherein r 1 , r 2 , r 3 . . . are the curvature radii of the successive lenses as viewed from the object side, d 1 , d 2 . . . are the center thicknesses and the air spaces between the successive lenses, η 1 , η 2 . . . and ν 1 , ν 2 . . . are the refractive indices and the Abbe numbers of the successive lenses, respectively, f 1 is the focal length of the divergent lens group and f 2 is the focal length of the convergent lens group.

Claim 20

A wide-angle zoom lens system according to claim 14, having the numerical data as follows: __________________________________________________________________________ f=100-137.8-190.3 Bf=134.301-163.512-204.118 __________________________________________________________________________ r.sub.1 =366.919 d.sub.1 =23.7 η.sub.1 =1.60311 ν.sub.1 =60.7 r.sub.2 =9892.783 d.sub.2 =1.4 η.sub.2 =1. r.sub.3 =446.126 d.sub.3 =5.2 η.sub.3 =1.713 ν.sub.2 =53.9 r.sub.4 =86.883 d.sub.4 =27.6 η.sub.4 =1. f.sub.1 =-174.541 r.sub.5 =436.547 d.sub.5 =9.8 η.sub.5 =1.64831 ν.sub.3 =33.8 r.sub.6 =2683.735 d.sub.6 =3.5 η.sub.6 =1.713 ν.sub.4 =53.9 r.sub.7 =123.569 d.sub.7 =22.3 η.sub.7 =1. r.sub.8 =118.688 d.sub.8 =14.7 η.sub.8 =1.64831 ν.sub.5 =33.8 r.sub.9 =255.510 η.sub.9 =1. d.sub.9 =118.4759˜53.8864˜6.7043 r.sub.10 =179.532 d.sub.10 =19.2 η.sub.10 =1.52 ν.sub.6 =70.1 r.sub.11 =-1117.059 d.sub.11 =0.3 η.sub.11 =1. r.sub.12 =83.430 d.sub.12 =25.1 η.sub.12 =1.53172 ν.sub.7 =48.9 f.sub.2 =134.988 r.sub.13 =523.622 d.sub.13 =0.3 η.sub.13 =1. r.sub.14 =105.008 d.sub.14 =11.5 η.sub.14 =1.52 ν.sub.8 =70.1 r.sub.15 =-3490.811 d.sub.15 =3.5 η.sub.15 =1.68893 ν.sub.9 =31.1 r.sub.16 =236.160 d.sub.16 =12.6 η.sub.16 =1. r.sub.17 =-219.921 d.sub.17 =5.2 η.sub.17 =1.80518 ν.sub.10 =25.5 r.sub.18 =-166.351 d.sub.18 =2.8 η.sub.18 =1.74 ν.sub.11 =28.2 r.sub.19 =72.853 d.sub.19 =8.4 η.sub.19 =1. r.sub.20 =-260.065 d.sub.20 =12.2 η.sub.20 =1.50137 ν.sub.12 =56.5 r.sub.21 =-94.950 d.sub.21 =0.3 η.sub.21 =1. r.sub.22 =156.004 d.sub.22 =7.7 η.sub.22 =1.62606 ν.sub.13 =39.1 r.sub.23 =-578.679 η.sub.23 =1. __________________________________________________________________________ wherein r 1 , r 2 , r 3 . . . are the curvature radii of the successive lenses as viewed from the object side, d 1 , d 2 . . . are the center thicknesses and the air spaces between the successive lenses, η 1 , η 2 . . . and ν 1 , ν 2 . . . are the refractive indices and the Abbe numbers of the successive lenses, respectively, f 1 is the focal length of the divergent lens group and f 2 is the focal length of the convergent lens group.

Claim 21

A wide-angle zoom lens system according to claim 14, having the numerical data as follows: __________________________________________________________________________ f=100-137.8-190.3 Bf=134.810-164.021-204.626 __________________________________________________________________________ r.sub.1 =383.989 d.sub.1 =20.2 η.sub.1 =1.60311 ν.sub.1 =60.7 r.sub.2 =3490.811 d.sub.2 =3.5 η.sub.2 =1.64831 ν.sub.2 =33.8 r.sub.3 =∞ d.sub.3 =1.4 η.sub.3 =1. r.sub.4 =446.126 d.sub.4 =5.2 η.sub.4 =1.713 ν.sub.3 =53.9 f.sub.1 =-174.541 r.sub.5 =86.883 d.sub.5 =27.6 η.sub.5 =1. r.sub.6 =436.547 d.sub.6 =13.3 η.sub.6 =1.713 ν.sub.4 =53.9 r.sub.7 =121.240 d.sub.7 =22.3 η.sub.7 =1. r.sub.8 =118.688 d.sub.8 =14.7 η.sub.8 =1.7552 ν.sub.5 =77.5 r.sub.9 =219.240 η.sub.9 =1. d.sub.9 =118.1950˜53.6056˜6.4234 r.sub.10 =179.532 d.sub.10 =14.0 η.sub.10 =1.52 ν.sub.6 =70.1 r.sub.11 =-691.181 d.sub.11 =5.2 η.sub.11 =1.68893 ν.sub.7 =31.1 r.sub.12 =-910.239 d.sub.12 =0.3 η.sub.12 =1. r.sub.13 =83.43 d.sub.13 =25.1 η.sub.13 =1.52 ν.sub.8 =70.1 r.sub.14 =522.516 d.sub.14 =0.3 η.sub.14 =1. r.sub.15 =102.344 d.sub.15 =15.0 η.sub.15 =1.52 ν.sub.9 =70.1 f.sub.2 =134.988 r.sub.16 =162.916 d.sub.16 =12.6 η.sub.16 =1. r.sub.17 =-212.311 d.sub.17 =5.2 η.sub.17 =1.80518 ν.sub.10 =25.5 r.sub.18 =-166.351 d.sub.18 =2.8 η.sub.18 =1.74 ν.sub.11 =28.2 r.sub.19 =72.853 d.sub.19 =8.4 η.sub.19 =1. r.sub.20 =-260.065 d.sub.20 =12.2 η.sub.20 = 1.50137 ν.sub.12 =56.5 r.sub.21 =-94.950 d.sub.21 =0.3 η.sub.21 =1. r.sub.22 =156.004 d.sub.22 =7.7 η.sub.22 =1.62606 ν.sub.13 =39.1 r.sub.23 =-446.049 η.sub.23 =1. __________________________________________________________________________ wherein r 1 , r 2 , r 3 . . . are the curvature radii of the successive lenses as viewed from the object side, d 1 , d 2 . . . are the center thicknesses and the air spaces between the successive lenses, η 1 , η 2 . . . and ν 1 , ν 2 . . . are the refractive indices and the Abbe numbers of the successive lenses, respectively, f 1 is the focal length of the divergent lens group and f 2 is the focal length of the convergent lens group.

Claim 22

A wide-angle zoom lens system according to claim 2, wherein said convergent lens group includes in the order from the object side a second positive component, a second positive meniscus component convex to the object side, a third negative component, a third positive meniscus component convex to the image side and a third positive component.

Claim 23

A wide-angle zoom lens system according to claim 21, wherein said optical system further satisfies the following conditions: ##EQU8## wherein f 1 and f 2 represent the focal length of the divergent group and of the convergent group, respectively, f 1i and f 2i represent the focal length of each component of the divergent group and of the convergent group, respectively, and the subscript i represents the order of each component from the object side.

Claim 24

A wide-angle zoom lens system according to claim 22, wherein said optical system further satisfies the following conditions: 1.0<Q 11 <1.5 1.0<|q 12 |<1.5 1.2<|q 13 |<1.7 2.0<q 14 <5.0 0.4<q 21 <1.0 1.2<q 22 <2.5 0.5<|q 23 |<0.9 1.5<|q 24 |<4.0 1.0<q 25 <2.5 wherein Q 1i and Q 2i represent the shape factor of each component of the divergent group and of the convergent group, respectively, the subscript i represents the order of each component from the object side, shape factor Q being devined as ##EQU9## r R and r F represent the radius of curvature of the rearmost and the foremost surface of each component, respectively.

Claim 25

A wide-angle zoom lens system according to claim 23, having the numerical data as follows: __________________________________________________________________________ f=100-137.40-190.97, F/3.5 Bf-120.91-146.73-183.71 __________________________________________________________________________ r.sub.1 =121.861 d.sub.1 =22.76 η.sub.1 =1.60311 ν.sub.1 =60.7 r.sub.2 =862.970 d.sub.2 =1.94 r.sub.3 =450.452 d.sub.3 =4.16 η.sub.2 =1.6968 ν.sub.2 =55.6 f.sub.1 =-166.39 r.sub.4 =63.915 d.sub.4 =17.95 r.sub.5 =458.957 d.sub.5 =4.16 η.sub.3 =1.71342 ν.sub.3 =53.9 r.sub.6 =96.595 d.sub.6 =21.89 r.sub.7 =93.687 d.sub.7 =10.83 η.sub.4 =1.69896 ν.sub.4 =30.0 r.sub.8 =167.216 d.sub.8 =93.53˜41.50˜2.48 r.sub.9 =107.864 d.sub.9 =23.87 η.sub.5 =1.62041 ν.sub.5 =60.3 r.sub.10 =-436.728 d.sub.10 =6.94 r.sub.11 =59.746 d.sub.11 =13.07 η.sub.6 =1.62041 ν.sub.6 =60.3 r.sub.12 =179.704 d.sub.12 =7.43 f.sub.2 =114.87 r.sub.13 =-345.071 d.sub.13 =13.08 η.sub.7 =1.80518 ν.sub.7 =25.5 r.sub.14 =57.356 d.sub.14 =9.19 r.sub.15 =-140.893 d.sub.15 =8.01 η.sub.8 =1.62588 ν.sub.8 =35.6 r.sub.16 =-73.702 d.sub.16 =0.28 r.sub.17 =114.682 d.sub.17 =8.40 η.sub.9 =1.62588 ν.sub.9 =35.6 r.sub.18 =951.608 __________________________________________________________________________ wherein r 1 , r 2 , r 3 . . . are the curvature radii of the successive lenses as viewed from the object side, d 1 , d 2 . . . are the center thicknesses and the air spaces between the successive lenses, η 1 , η 2 . . . and ν 1 , ν 2 . . . are the refractive indices and the Abbe numbers of the successive lenses, respectively, f 1 is the focal length of the divergent lens group and f 2 is the focal length of the convergent lens group.

Claim 26

A wide-angle zoom lens system according to claim 23, having the numerical data as follows: __________________________________________________________________________ f=100-137.40-190.97, F/3.5 Bf-121.01-146.83-183.81 __________________________________________________________________________ r.sub.1 =122.527 d.sub.1 =22.76 η.sub.1 =1.60311 ν.sub.1 =60.7 r.sub.2 =834.331 d.sub.2 =1.94 r.sub.3 =428.800 d.sub.3 =4.16 η.sub.2 =1.6968 ν.sub.2 =55.6 f.sub.1 =-166.39 r.sub.4 =63.108 d.sub.4 =18.36 r.sub.5 =513.233 d.sub.5 =4.16 η.sub.3 =1.713142 ν.sub.3 =53.9 r.sub.6 =93.410 d.sub.6 =18.72 r.sub.7 =92.280 d.sub.7 =10.83 η.sub.4 =1.69895 ν.sub.4 =30.0 r.sub.8 =184.992 d.sub.8 =96.316˜44.285˜5.264 r.sub.9 =104.729 d.sub.9 =19.71 η.sub.5 =1.62041 ν.sub.5 =60.3 r.sub.10 =-124.514 d.sub.10 =3.70 η.sub.6 =1.62004 ν.sub.6 =36.3 r.sub.11 = -503.795 d.sub.11 =6.94 r.sub.12 =57.902 d.sub.12 =14.1 η.sub.7 =1.5168 ν.sub.7 =64.2 r.sub.13 =249.004 d.sub.13 =7.42 f.sub.2 =114.87 r.sub.14 =-241.908 d.sub.14 =9.37 η.sub.8 =1.80518 ν.sub.8 =25.5 r.sub.15 =-184.314 d.sub.15 =2.78 η.sub.9 =1.72825 ν.sub.9 =28.3 r.sub.16 =56.464 d.sub.16 =8.78 r.sub.17 =-199.298 d.sub.17 =8.66 η.sub.10 =1.62588 ν.sub.10 =35.6 r.sub.18 =-78.755 d.sub.18 =0.28 r.sub.19 =103.430 d.sub.19 =7.96 η.sub.11 =1.62588 ν.sub.11 =35.6 r.sub.20 =295.655 __________________________________________________________________________ wherein r 1 , r 2 , r 3 . . . are the curvature radii of the successive lenses as viewed from the object side, d 1 , d 2 . . . are the center thicknesses and the air spaces between the successive lenses, η 1 , η 2 . . . and ν 1 , ν 2 . . . are the refractive indices and the Abbe numbers of the successive lenses, respectively, f 1 is the focal length of the divergent lens group and f 2 is the focal length of the convergent lens group.