JPH05224125A - Zoom lens - Google Patents

Abstract

PURPOSE:To make a zoom lens have high variable power ratio and large aperture ratio, to make it compact, to reduce the cost thereof and to obtain the high performance of aberration by constituting the zoom lens of 1st-5th lens components in order from an object side and fixing the 1st lens component having positive refracting power fixed in the middle of variable power. CONSTITUTION:This zoom lens is constituted of five lens components, a 1st lens component G1 having the positive refracting power, a 2nd lens component G2 having negative refracting power, a 3rd lens component G3 having the positive refracting power, a 4th lens component G4 having the positive refracting power, and a 5th lens component G5 having the negative refracting power in order from the object side, and the 1st lens component G1 is fixed in the middle of variable power. In order to make the zoom lens compact, the 5th lens component is allowed to have the negative power and the zoom lens is made in such a zoom type that the negative lens component is placed on the image side of the conventional four-component system. The 1st lens group G1 is fixed because its outside diameter becomes remarkably large when it is largely moved in the middle of variable power and it becomes heavy in weight.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a zoom lens, and more particularly to a zoom lens having a large zoom ratio applicable to small cameras such as video cameras and electronic still cameras.

[0002]

2. Description of the Related Art In recent years, camera bodies such as video cameras have become much more compact in weight and volume than conventional products due to packaging of electronic parts and improvement in integration rate. On the other hand, the price reduction and cost reduction of the camera body are remarkable.

Under such circumstances, the weight, volume, and cost of the lens occupying the entire camera have been gradually improved in absolute value. However, since the relative value to the entire camera is increasing year by year, the demand for compactness and cost reduction is becoming stronger.

On the other hand, a higher aperture ratio is provided to compensate for the lack of illuminance due to the downsizing of the image pickup device, and higher aberration performance is required for higher pixel count and higher resolution. There is also the aspect that functions are being demanded of lenses.

At present, particularly in the field of video cameras, a variable power lens having a variable power ratio of about 6 is predominant. As a zoom lens having a high zoom ratio and a large aperture ratio with an F number of about F1.6 to F1.8, many zoom lenses having four or five components have been proposed. .. However, most of them are composed of about 13 to 15 lenses, so that it cannot be said that the present demands for compactness and low cost are satisfied.

Therefore, in recent years, in order to satisfy such requirements, there is a tendency to reduce the number of lens elements by using aspherical surfaces. For example, the zoom lens disclosed in Japanese Unexamined Patent Publication No. 57-27219 is not a 6 × zoom, but is a system composed of three positive and negative components, and the first lens component is an image point position correction component (compensator), By using the second lens component as a variable power component (variator) and moving it along the optical axis and using one aspherical surface for each group, a 3x zoom of F1.6 is composed of 12 lenses. ..

However, it cannot be said that the number of constituent elements of this zoom lens is small considering the specifications thereof. Also,
Since the third lens component is not moved during zooming, the first lens component must necessarily move as a compensator lens component. At that time, when trying to achieve a high zoom ratio of about 6 times, the wide end and middle range (intermediate focal length)
Then, the zoom solution is such that the first lens component moves considerably to the object side. Therefore, the diameter of the first lens component (front lens) is considerably larger than that of the zoom lens including four and five components, and the weight is considerably heavy.

On the other hand, in the four-component zoom lens, the lens shape, the lens arrangement, and the aspherical surface arrangement are made quite effective, and the number of constituent elements is greatly reduced.
There are those disclosed in 10112 and JP-A-60-107013.

In Japanese Patent Laid-Open No. 61-110112, each lens component is simply constructed by a four-component system of positive, negative, negative, and positive, and aspherical surfaces of four surfaces are effectively used, so that only eight lenses are constructed in the entire system. In 6
Has achieved a double zoom lens.

Further, Japanese Unexamined Patent Publication No. 60-107013 shows a schematic diagram of a four-fold zoom of F2.0 with a positive / negative positive / positive four-component system and an eight-element configuration.

In addition, JP-A-63-304218 and JP-A-64-44
No. 907, Japanese Patent Laid-Open No. 1-223408, which is composed of a positive / negative positive three-component system in which the second lens component is one element and the first lens component is one or two elements, and the number of elements is reduced by using an aspherical surface. A zoom lens having a magnification ratio of 2 to 3 and an F number of about 2 to 4 has been proposed.

These lens types are the main components of zooming, and the second lens component that largely moves on the optical axis during zooming is composed of one negative single lens. Therefore, since the chromatic aberration is not corrected in the second lens component, the variation in chromatic aberration due to zooming is large, and this variation in chromatic aberration cannot be improved even if aspherical surfaces are used abundantly. Therefore, it is difficult to realize a high magnification ratio of 6 times class.

In Japanese Patent Laid-Open No. 64-91110, a portion corresponding to the second lens component is separated into a negative lens component composed of two negative lenses and a positive lens component composed of one positive lens,
The apparent configuration of the lens is a three-component system, but the substantial configuration is a four-component system. Then, the 3 × zoom is realized while suppressing the number of constituent elements to 8 to 11 which is the same as that of the three-component system. The zooming is performed by independently moving the negative lens component (substantially second lens component) and the positive lens component (substantially third lens component) described above. However, in this four-component zoom lens, the chromatic aberration correction within the lens components is not completed in each of the second lens component and the third lens component that move independently, so that when the zoom lens is applied to high magnification, Chromatic aberration cannot be sufficiently suppressed due to the relative position variation of the two lens components due to. With this zoom lens, the chromatic aberration variation is suppressed by devising the zoom solution while keeping the zoom ratio at 3 times, but it is quite difficult to make this a 6 times zoom.

It can be said that Japanese Laid-Open Patent Publication No. 1-185608 was developed to a 6 × zoom while reducing the number of components of the zoom lens proposed in Japanese Laid-Open Patent Publication No. 64-91110 by using a lot of aspherical surfaces. .. That is, in Japanese Patent Laid-Open No. 64-91110, the second lens component is one negative single lens, the third lens component is one positive single lens, and the fourth lens component is also simplified. However, even in this case, since the above-mentioned variation in chromatic aberration is large, the residual aberration is still large although the zoom solution has been devised considerably. Furthermore, since the zoom solution has a considerable weight in correcting chromatic aberration, the moving amounts of the second lens component and the third lens component, which are moving lens components, are considerably increased, and as a result, the total length is increased. There is. In particular, the outer diameter of the front lens, which has a large effect on the weight, is considerably larger than the existing standard one with the same specifications.

Further, as in Japanese Patent Laid-Open No. 1-185608, a zoom lens capable of suppressing variation in chromatic aberration with a structure of four components of positive, negative, positive and positive is disclosed in Japanese Patent Laid-Open No. 2-39011. Three aspherical surfaces are used for this, and eight F1.4 6x zooms are used. Although it is feasible from the viewpoint of cost, performance, and size, it cannot be said that the diameter of the front lens is small, and there is no significant advantage over the existing one in terms of weight. Further, since the distance between the third lens component and the fourth lens component is large, and the light flux after the third lens component has exited the fourth lens component almost afocally,
If the lens component has a simple structure, the back focus becomes unnecessarily long. Therefore, there is a limit to the reduction of the total length. Further, there is a problem that the sagittal coma aberration (linnen-feller) that is difficult to appear in the aberration diagram is very large, and the off-axis performance deterioration is large.

Further, by moving each lens component in a positive / negative positive three-component system similar to these, it has been proposed for a single-lens reflex camera or a compact camera for the purpose of reducing the number of lenses and increasing the zoom ratio. Zoom lens
-30855, 54-80143, and JP-A-2-39116. The variable power ratio and the number of constituents are 2.4x / 10, 3x /
11 sheets, 3 times / 12 sheets. In all of these, the zoom ratio is insufficient, and in particular, simplification of the second lens component and the third lens component has not been sufficiently achieved, and it is difficult to apply them in terms of cost.

[0017]

Therefore, in view of such a situation, in the present invention, in order to achieve a high zoom ratio and a large aperture ratio, compactness, cost reduction, and high aberration performance are achieved. An object is to provide an advantageous zoom lens configuration.

[0018]

To achieve the above object, a zoom lens according to the present invention comprises, in order from the object side, a first lens component having a positive refractive power and a second lens component having a negative refractive power.
A lens component and a third lens component having a positive refractive power,
It is characterized in that it is composed of five lens components, a fourth lens component having a positive refractive power and a fifth lens component having a negative refractive power, and the first lens component is fixed during zooming.

Generally, in order to make the zoom lens compact, a method of reducing the moving amount of the moving lens component or shortening the lens back can be considered. Normal,
In the zoom lens, the core thickness of the lens is made as thin as possible in the portion mainly performing the magnification change on the object side, and the number of lenses of each lens component is also suppressed to the necessary minimum. Therefore, if the refractive power of each lens component and the lens specifications are determined, it can be said that the length of the lens is determined to be 80%. The rest is to make the lens back shorter, which is a method that can greatly reduce the overall lens length.

Therefore, as described above, it is preferable that the fifth lens component has a negative refracting power, and the zoom type is such that the negative lens component is placed on the image side of the conventional four-component system. If the first lens component moves greatly during zooming, the outer diameter becomes significantly large and the lens weight becomes heavy, so the first lens component is fixed.

The second lens component is movable back and forth on the optical axis mainly for zooming, the third lens component is fixed during zooming, and the fourth lens component is mainly associated with zooming. It is possible to move back and forth on the optical axis to correct the image point.
The lens component is preferably fixed during zooming or movable back and forth on the optical axis to assist zooming.

In order to reduce the amount of movement in the zoom lens, it is desirable to carry out zooming with a lens component having a strong refractive power. In addition, the lens component for zooming has a solution that minimizes the amount of movement when it is between β = -1. That is, it is preferable to move the second lens component back and forth on the optical axis for zooming. Further, if the third lens component is fixed during zooming and the fourth lens component is movable back and forth on the optical axis for image point correction, the third lens component can be moved forward and backward as compared with the case where image point correction is performed by the third lens component. Since the air gap may be small, the total length of the lens system is shortened.

Further, considering the simplification of the driving portion, it is preferable that the fifth lens component is fixed, but by moving the fifth lens component on the optical axis, it is possible to provide an effect of assisting zooming. Therefore, the moving amount of the second lens component can be reduced, and the lens system becomes more compact.

Further, it is desirable that the second lens component and the fifth lens component move linearly during zooming.

In general, a zoom lens may be made compact as the number of moving lens components increases. However, when considering the drive system, the load on the mechanism and the drive is increased when there are many lens components that make complicated movements. At this time, if at least two lens components are moved linearly, the two lens components are linked or the movement amount is proportionally moved by a simple mechanism, thereby reducing the load on the drive system as much as possible. be able to.

Further, it is desirable that the third lens component and the fourth lens component each include at least one aspherical surface. When the number of lenses is fixed as described above, the amount of movement of the moving lens component is reduced or the lens back is shortened in order to make the overall length compact. , It is necessary to reduce the number of lenses. To reduce the number of spherical lenses while maintaining high performance, it is necessary to change the specifications. To reduce the number of lenses while keeping the performance and specifications, it is necessary to use an aspherical surface. At this time, it is most effective when used for the third lens component and the fourth lens component in which the way of passing the light beam hardly changes in the entire focal length range. If aspherical surfaces are used for these two lens components, a high performance zoom lens can be realized with a very small number of lenses.

Further, it is desirable that the fifth lens component is composed of a negative single lens. In the above-mentioned configuration, the light flux passing through the fifth lens component is thin because this lens component is close to the image plane, and aberration correction is not difficult.
Therefore, even if the fifth lens component is composed of a negative single lens, it is possible to sufficiently correct the aberration.

Alternatively, it is desirable that the first lens component and the second lens component each include at least one positive lens and at least one negative lens.

Since the zoom lens changes the focal length by changing the relative position of each lens component, in order to suppress the aberration variation due to zooming sufficiently small, each lens component must be almost completely corrected for aberrations. I have to. In particular, with respect to chromatic aberration, variation in aberration due to zooming becomes a serious problem. Therefore, it is desirable that the first lens component and the second lens component each perform achromaticity and correction of other aberrations with at least one positive lens and at least one negative lens. In particular, it is indispensable for high-magnification lenses. Further, it is desirable that the negative lens of the first lens component and the positive lens of the second lens component are made of a high dispersion material.

Furthermore, it is desirable that the first lens component and the second lens component satisfy the following conditional expressions (1), (2) and (3) when the fifth lens component is fixed during zooming. , Fifth
When the lens component moves during zooming, the following conditional expression (1),
It is desirable to satisfy (2) and (3 '). 0.10 <fS / φ1 <0.40 …… (1) 0.45 <fS ・ | φ2 | <1.35 …… (2) 2.2 <| φ2 | / φ1 <5.0 …… (3) 2.0 <| φ2 | / φ1 <4.0… (3 ') where fS: focal length at wide-angle end φ1: refractive power of first lens component φ2: refractive power of second lens component

Conditional expression (1) shows an appropriate range of the refractive power of the first lens component. If the upper limit of conditional expression (1) is exceeded and the refracting power of the first lens component becomes large, the aberration generated in the first lens component will become large and the aberration fluctuation due to zooming will become significant, so the performance required in the entire focal length range Can't get Further, since the locus of the fourth lens component that moves on the optical axis for image point correction hardly makes a U-turn, and the amount of movement increases significantly, it is necessary to set a large distance from the third lens component. The total length becomes very large, and it becomes difficult to correct aberrations at the wide-angle end. When the lower limit of conditional expression (1) is exceeded and the refracting power of the first lens component becomes small, the amount of aberration generated in the first lens component becomes small, but the first lens component and the second lens component become different due to zooming. The distance must be large, and not only the total length becomes large, but also the distance from the first lens component to the diaphragm becomes long and the diameter of the front lens becomes remarkably large because the light flux passes therethrough. For this reason, the weight of the lens must be increased.

Conditional expression (2) shows an appropriate range of the refractive power of the second lens component. When the upper limit of conditional expression (2) is exceeded and the refracting power of the second lens component becomes large, the aberration generated in the second lens component also becomes large, and the aberration variation due to zooming also becomes large, resulting in good performance over the entire focal length range. Can't get Further, since the locus of the fourth lens component is located closest to the telephoto end and is closest to the object side, it is necessary to provide a sufficient distance from the third lens component when focusing on a near object with the fourth lens component. It also has the drawback of increasing the total length. When the lower limit of conditional expression (2) is exceeded and the refractive power of the second lens component becomes small, the amount of movement of the second lens component due to zooming increases, the total lens length increases, and the front lens diameter also increases significantly. It gets bigger. Further, the locus of the fourth lens component hardly makes a U-turn, and the distance between the third lens component and the fourth lens component must be made large, which makes aberration correction difficult.

Conditional expressions (3) and (3 ') are defined by the first lens component and the second lens component.
It shows an appropriate range of the ratio of the refractive power to the lens component. When the upper limit of conditional expressions (3) and (3 ') is exceeded and the refractive power of the second lens component becomes larger than that of the first lens component, the locus of the fourth lens component for image point correction is near the telephoto end. Since the zoom solution is located at the position closest to the object side, the fourth lens component must be sufficiently spaced from the third lens component when focusing on a near object. Moreover, since the position of the fourth lens component at the wide-angle end is closer to the image plane than the position at the telephoto end, a distance from the fifth lens component must be provided. For this reason, the total lens length becomes extremely large. When the lower limit of conditional expressions (3) and (3 ') is exceeded and the refractive power of the first lens component becomes larger than that of the second lens component, the locus of movement of the fourth lens component hardly makes a U-turn, and The distance between the lens component and the fourth lens component has to be large, which makes it difficult to correct aberrations at the wide-angle end as the total lens length increases. In either case, the lens system is not compact.

When the fifth lens component moves during zooming, it is desirable that the third lens component and the fourth lens component each include at least one aspherical surface for the reasons described above. ..

Further, the third lens component is composed of a positive single lens, the fourth lens component is composed of a negative lens and a positive lens cemented or separated, and the aspherical surface is provided in the positive lens. Is desirable.

If an aspherical surface is used for the third lens component, aberrations can be sufficiently corrected even if it is composed of only a positive single lens, and a high-performance lens system can be realized even with a bright F number. Similarly, by constructing the fourth lens component by cementing or separating a negative lens and an aspherical positive lens, it is possible to realize a high-performance lens system with sufficient aberration correction even with a bright F number. However, if an aspherical surface is used for the negative lens, it is possible to correct monochromatic aberration, but the chromatic aberration will be worsened. By properly using the aspherical surface in this manner, the number of lenses can be reduced as much as possible and a compact lens system can be realized.

Alternatively, when it is desired to make the refractive power of the third lens component relatively strong, the third lens component should be at least 1
It is preferable that the second lens component is composed of two lenses including the negative lens, and the fourth lens component is composed of a positive single lens.

In order to provide the third lens component and the fourth lens component with the same effect as described above, another configuration can be considered. The configuration at this time must be as described above. This is because unless an aspherical surface is used in an effective place, not only the number of lenses is reduced but the aberration is worsened, and a compact lens system cannot be realized. Further, when it is desired to make the refracting power of the third lens component relatively strong, it is effective to make the configuration of the third lens component two in this way.

Further, it is desirable that the third lens component and the fourth lens component satisfy the following conditional expressions (4), (5) and (6) when the fifth lens component is fixed during zooming. When the fifth lens component moves during zooming, it is desirable to satisfy the following conditional expressions (4), (5) and (6 '). 0.15 <fS / φ3 <0.65 …… (4) 0.35 <fS ・ φ4 <0.85 …… (5) 0.7 <(φ3 + φ4) / | φ2 | <1.7 …… (6) 0.7 <(φ3 + φ4) / | Φ2 | <1.8 (6 ') where φ3 is the refractive power of the third lens component and φ4 is the refractive power of the fourth lens component.

Conditional expression (4) shows an appropriate range of the refractive power of the third lens component. When the upper limit of conditional expression (4) is exceeded and the refracting power of the third lens component becomes large, the lens back becomes small and the total lens length becomes short, but the aberration generated in the third lens component becomes large, especially at the wide-angle end. You can't get the performance. In particular, since a bright F number is required in a video camera, the third lens component needs to have the ability to sufficiently correct spherical aberration at the wide-angle end. As described above, the third lens component may be one or two.
When the lens is composed of a single lens, it is possible to correct the aberration by using the aspherical surface at an appropriate position. However, if the aberration generated by the third lens component is too large, the aberration can be properly corrected no matter how many aspherical surfaces are used. I can't. When the lower limit of conditional expression (4) is exceeded and the refractive power of the third lens component becomes small, the light flux is hardly condensed by the third lens component, so that the lens back becomes large and the total lens length becomes long. Further, the refracting power of the fourth lens component becomes relatively large, which is disadvantageous for correction of field curvature and the like.

Conditional expression (5) shows an appropriate range of the refractive power of the fourth lens component. When the upper limit of conditional expression (5) is exceeded and the refracting power of the fourth lens component becomes large, the aberration generated in the fourth lens component becomes large, and good performance cannot be obtained in the entire focal length range. Since the fourth lens component is located relatively close to the image plane and the on-axis light beam and the off-axis light beam are separated, off-axis aberrations such as field curvature and distortion must be corrected. Therefore, as described above, by using an aspherical surface at an appropriate position, it becomes possible to correct the aberration with a simple structure of one or two lenses. However, if the amount of aberration generated in the fourth lens component is extremely large, even if an aspherical surface is used, a simple structure cannot be obtained and a compact structure cannot be achieved. When the lower limit of conditional expression (5) is exceeded and the refracting power of the fourth lens component becomes small, the refracting power of the third lens component has to be relatively large, and it becomes difficult to correct spherical aberration at the wide-angle end. In addition, the movement amount of the fourth lens component becomes large, and a space between the fourth lens component and the third lens component must be provided, so that the total lens length cannot be reduced.

Conditional expressions (6) and (6 ') are the third lens component and the fourth lens component.
It shows an appropriate range of the ratio of the sum of the refractive powers of the lens components and the refractive power of the second lens component. The refractive powers of the third to fourth lens components and the second lens component are
There is a close relationship with aberrations and zoom solutions. Conditional expression
When the sum of the refractive powers of the third lens component and the fourth lens component exceeds the upper limits of (6) and (6 ') and becomes larger than the refractive power of the second lens component, the refractive power of the first lens component is also inevitable. Since it must be a zoom solution that becomes large, it is difficult to realize a lens system having a large variation in aberration during zooming and good performance in the entire focal length range. If the sum of the refracting powers of the third lens component and the fourth lens component is smaller than the refracting powers of the second lens component below the lower limits of the conditional expressions (6) and (6 ′), the first
A zoom solution inevitably reduces the refracting power of the lens component, and good performance can be realized, but the length from the first lens component to the fourth lens component becomes large, and a compact lens The system cannot be realized.

Further, the fifth lens component preferably satisfies the following conditional expression (7) when the fifth lens component is fixed during zooming, and when the fifth lens component moves during zooming,
It is desirable to satisfy the following conditional expressions (7 ′) and (8). 0.07 <fS / φ5 <0.70 …… (7) 0.02 <fS ・ φ5 <0.70 …… (7 ') 1.0 <De5 <5.0 …… (8) However, φ5: Refractive power of the fifth lens component De5: 5th This is the amount of movement of the lens component during zooming.

Conditional expressions (7) and (7 ') show an appropriate range of the refracting power of the fifth lens component. If the upper limit of conditional expressions (7) and (7 ') is exceeded and the refracting power of the fifth lens component becomes large, the lens back of the entire system will become small, and in the case of a video camera, optical parts such as a low-pass filter will be inserted. Will run out of space. Further, since the axial light flux passing through the third lens component and the fourth lens component becomes large, it becomes difficult to correct the aberration. When the lower limit of conditional expressions (7) and (7 ') is exceeded and the refracting power of the fifth lens component becomes small, the zooming effect due to the change in the relative distance between the fifth lens component and the second lens component diminishes. The amount of movement of the component becomes large, and the total lens length and the front lens diameter become remarkably large, so that it cannot be a compact lens system superior to the four-component system.

Conditional expression (8) shows an appropriate range of the moving amount of the fifth lens component. When the upper limit of conditional expression (8) is exceeded and the amount of movement of the fifth lens component during zooming increases, the lens back at the wide-angle end decreases, making it impossible to insert a low-pass filter or the like in a video lens. .. Further, in the case of a high zoom lens system, chromatic aberration is not corrected in the fifth lens component, so that chromatic aberration greatly varies during zooming. When the lower limit of conditional expression (8) is exceeded and the movement amount of the fifth lens component during zooming becomes small,
Since the zooming effect due to the relative change in the distance between the fourth lens component and the fifth lens component is almost eliminated, it is not very superior to the four-component lens.

[0046]

EXAMPLES Examples of zoom lenses according to the present invention will be shown below. However, in each example, ri (i = 1,2,3, ...) is the radius of curvature of the i-th surface counted from the object side, di (i = 1,2,3, ...)
Indicates the i-th axial upper surface distance counted from the object side, and Ni (i = 1,
2,3, ...), νi (i = 1,2,3, ...) indicate the refractive index and Abbe number of the i-th lens from the object side for the d-line. Also,
f indicates the focal length of the entire system.

In the examples, the surface with the radius of curvature marked with * indicates that it is a surface composed of an aspherical surface, and it is defined by the following mathematical expression 1 representing the surface shape of the aspherical surface. ..

<Example 1> f = 39.4 to 18.0 to 6.9 [radius of curvature] [axis upper surface spacing] [refractive index] [Abbe number] r1 48.705 d1 1.000 N1 1.84666 ν1 23.82 r2 19.138 d2 3.200 N2 1.69680 ν2 56.47 r3- 172.729 d3 0.100 r4 14.839 d4 2.300 N3 1.69680 ν3 56.47 r5 38.205 d5 11.919 to 7.509 ~ 0.600 r6 15.798 d6 0.900 N4 1.77250 ν4 49.77 r7 5.610 d7 2.100 r8 -8.576 d8 0.900 N5 1.77250 ν5 49.77 r9 10.6 d84 1.70 n6 6.84 d84 1.700 46.809 d10 1.000 ~ 5.410 ~ 12.319 r11 ∞ d11 1.000 r12 9.266 d12 2.200 N7 1.62280 ν7 56.88 r13 * 31.909 d13 5.000 ~ 1.863 ~ 2.473 r14 10.155 d14 0.900 N8 1.84666 ν8 23.82 r15 5.292 d15 4.000 N9 1.62280 ν9 56.88 r16 * ~ 4.637 ~ 4.027 r17 100.000 d17 1.000 N10 1.87800 ν10 38.14 r18 14.867 d18 1.500 r19 ∞ d19 5.500 N11 1.51680 ν11 64.20 r20 ∞

[Aspherical surface coefficient] r13: ε = 0.10000 × 10 A4 = 0.18528 × 10 ^-3 A6 = 0.10482 × 10 ^-5 A8 = 0.20374 × 10 ^-7 A10 = -0.62867 × 10 ^-9 A12 = -0.51565 × 10 ^-10 r16: ε = 0.10000 × 10 A4 = 0.38684 × 10 ^-3 A6 = 0.11036 × 10 ^-4 A8 = -0.12957 × 10 ^-5 A10 = -0.15518 × 10 ^-7 A12 = 0.35743 × 10 ^-8

<Example 2> f = 39.4 to 18.0 to 6.9 [Radius of curvature] [Axis upper surface spacing] [Refractive index] [Abbe number] r1 70.448 d1 1.000 N1 1.84666 ν1 23.82 r2 23.381 d2 3.300 N2 1.69680 ν2 56.47 r3- 67.212 d3 0.100 r4 15.289 d4 2.100 N3 1.69100 ν3 54.75 r5 30.006 d5 13.280 ~ 8.503 ~ 0.600 r6 30.697 d6 0.900 N4 1.78850 ν4 45.68 r7 7.270 d7 2.100 r8 -9.452 d8 0.900 N5 1.77250 ν5 49.77 r9 10.23 d84 2.90 41.675 d10 1.000 ~ 5.777 ~ 13.680 r11 ∞ d11 1.000 r12 10.288 d12 1.200 N7 1.83350 ν7 21.00 r13 7.349 d13 3.000 N8 1.60311 ν8 60.74 r14 * 105.107 d14 3.500 ~ 1.753 ~ 2.149 r15 * 12.278 d15 4.000 N9 1.69680 ν9 56.47 r16 0.200 to 1.947 to 1.551 r17 -158.124 d17 1.000 N10 1.84666 ν10 23.82 r18 13.135 d18 1.500 r19 ∞ d19 5.500 N11 1.51680 ν11 64.20 r20 ∞

[Aspherical surface coefficient] r14: ε = 0.10000 × 10 A4 = 0.14842 × 10 ^-3 A6 = -0.74344 × 10 ^-6 A8 = -0.64127 × 10 ^-7 A10 = 0.17387 × 10 ^-8 A12 = 0.67950 × 10 ^-9 r15: ε = 0.10000 × 10 A4 = -0.64129 × 10 ^-4 A6 = 0.76918 × 10 ^-6 A8 = -0.39315 × 10 ^-6 A10 = 0.25872 × 10 ^-8 A12 = 0.14019 × 10 ^-8 r16: ε = 0.10000 x 10 A4 = 0.42761 x 10 ^-3 A6 = 0.27839 x 10 ^-5 A8 = -0.81661 x 10 ^-6 A10 = -0.24530 x 10 ^-8 A12 = 0.27471 x 10 ^-8

<Example 3> f = 39.4 to 18.0 to 6.9 [radius of curvature] [axis upper surface spacing] [refractive index] [Abbe number] r1 37.382 d1 1.000 N1 1.83350 ν1 21.00 r2 21.403 d2 4.000 N2 1.69680 ν2 56.47 r3- 154.259 d3 0.100 r4 15.517 d4 2.700 N3 1.69100 ν3 54.75 r5 20.164 d5 14.059 ~ 9.071 ~ 0.600 r6 17.072 d6 0.900 N4 1.78850 ν4 45.68 r7 6.663 d7 2.600 r8 -9.852 d8 0.900 N5 1.77250 ν5 49.77 r6 -23 6.96 r9 11.754 d9 101.710 d10 1.000 to 5.989 to 14.459 r11 ∞ d11 1.000 r12 8.836 d12 1.200 N7 1.83350 ν7 21.00 r13 7.097 d13 3.000 N8 1.61800 ν8 63.39 r14 * 79.543 d14 3.500 to 2.452 to 3.101 r15 * 14.134 d15 4.000 N9 1.77250 d16 -14.177 r16 * 0.200 to 1.248 to 0.599 r17 -158.124 d17 1.000 N10 1.83350 ν10 21.00 r18 12.914 d18 1.500 r19 ∞ d19 5.500 N11 1.51680 ν11 64.20 r20 ∞

[0053] [aspherical coefficients] r14: ε = 0.10000 × 10 A4 = 0.27102 × 10 -3 A6 = 0.47627 × 10 -6 A8 = -0.20410 × 10 -7 A10 = 0.30260 × 10 -8 A12 = 0.28683 × 10 - ⁹ r15: ε = 0.10000 × 10 A4 = -0.11847 × 10 ^-3 A6 = 0.57581 × 10 ^-6 A8 = -0.22162 × 10 ^-6 A10 = 0.48051 × 10 ^-8 A12 = 0.10485 × 10 ^-8 r16: ε = 0.10000 × 10 A4 = 0.31785 × 10 ^-3 A6 = 0.29192 × 10 ^-5 A8 = -0.56188 × 10 ^-6 A10 = 0.40021 × 10 ^-8 A12 = 0.23152 × 10 ^-8

<Example 4> f = 37.9 to 14.0 to 6.7 [radius of curvature] [axis upper surface spacing] [refractive index] [Abbe number] r1 94.011 d1 1.300 N1 1.84666 ν1 23.82 r2 31.767 d2 3.100 N2 1.69680 ν2 56.47 r3- 182.188 d3 0.100 r4 20.472 d4 2.300 N3 1.69100 ν3 54.75 r5 47.911 d5 19.441 to 10.199 to 0.800 r6 43.231 d6 1.100 N4 1.78850 ν4 45.68 r7 8.548 d7 2.800 r8 -10.580 d8 2.6 6.79 r6 23.96 r6 21.6 2.76 6.6 r 22.860 d10 1.00 to 10.241 to 19.641 r11 ∞ d11 1.000 r12 * 9.441 d12 3.000 N7 1.69680 ν7 56.47 r13 -31.861 d13 1.500 N8 1.83350 ν8 21.00 r14 42.270 d14 2.800 to 1.719 to 2.210 r15 10.475 d15 5.000 N9 1.69680 d16 -29.47 r. 0.400 to 1.481 to 0.990 r17 -149.941 d17 0.900 N10 1.80741 ν10 31.59 r18 10.850 d18 2.500 r19 ∞ d19 5.500 N11 1.51680 ν11 64.20 r20 ∞

[Aspherical coefficient] r12: ε = 0.10000 × 10 A4 = -0.34108 × 10 ^-4 A6 = -0.53151 × 10 ^-5 A8 = 0.78176 × 10 ^-6 A10 = -0.50250 × 10 ^-7 A12 = 0.95777 × 10 ^-9 r16: ε = 0.10000 × 10 A4 = 0.73907 × 10 ^-3 A6 = 0.36052 × 10 ^-4 A8 = -0.45692 × 10 ^-5 A10 = 0.20141 × 10 ^-6 A12 = -0.22373 × 10 ^-8

<Example 5> f = 39.4 to 14.2 to 6.9 [radius of curvature] [axis upper surface spacing] [refractive index] [Abbe number] r1 19.813 d1 0.975 N1 1.84666 ν1 23.82 r2 14.376 d2 1.125 r3 15.320 d3 5.000 N2 1.69680 ν2 56.47 r4 143.849 d4 19.846 ~ 10.540 ~ 0.750 r5 22.382 d5 0.675 N3 1.77250 ν3 49.77 r6 8.629 d6 1.750 r7 -36.377 d7 0.675 N4 1.71300 ν4 53.93 r8 7.703 d8 1.200 r9 10.277 d9 1.875 N5 1.78472 1035.75. 20.296 r11 ∞ d11 1.800 to 1.800 to 1.800 r12 * 11.678 d12 4.200 N6 1.55753 ν6 67.17 r13 -18.106 d13 3.200 to 2.501 to 4.041 r14 -429.138 d14 0.900 N7 1.84666 ν7 23.82 r15 10.732 d15 0.825 r16 10.048 d16 3.600 N8 43.1060 -13.122 d17 1.000 ~ 1.699 ~ 0.159 r18 -121.388 d18 1.000 N9 1.80741 ν9 31.59 r19 25.851 d19 3.500 r20 ∞ d20 5.500 N10 1.51680 ν10 64.20 r21 ∞

[Aspherical surface coefficient] r12: ε = 0.10000 × 10 A4 = -0.19167 × 10 ^-3 A6 = -0.51352 × 10 ^-6 A8 = -0.98666 × 10 ^-9 r17: ε = 0.10000 × 10 A4 = 0.25629 × 10 ^-3 A6 = 0.53611 × 10 ^-5 A8 = -0.168 30 × 10 ^-6

<Example 6> f = 52.5 to 21.0 to 9.2 [radius of curvature] [axis upper surface spacing] [refractive index] [Abbe number] r1 28.509 d1 1.300 N1 1.84666 ν1 23.82 r2 18.352 d2 1.500 r3 19.638 d3 5.000 N2 1.71300 ν2 53.93 r4 3074.463 d4 26.254 〜 15.114 〜 1.000 r5 27.754 d5 0.900 N3 1.77250 ν3 49.77 r6 11.465 d6 2.200 r7 -24.182 d7 0.900 N4 1.71300 ν4 53.93 r8 12.776 d8 1.600 〜5154.1218.5 25.4318 26.653 r11 ∞ d11 2.000 r12 26.201 d12 3.800 N6 1.67000 ν6 57.07 r13 -36.572 d13 0.100 r14 15.716 d14 3.200 N7 1.67000 ν7 57.07 r15 58.255 d15 1.300 r16 -43.335 d16 1.200 N8 1.80518 ν8 25.43 r17 23.161 d17 6.200 6. 3.200 N9 1.60311 ν9 60.74 r19 * -17.035 d19 0.600 to 2.122 to 0.852 r20 -64.419 d20 1.000 N10 1.60565 ν10 37.81 r21 28.874 d21 3.000 r22 ∞ d22 3.000 N11 1.51680 ν11 64.20 r23 ∞

[Aspherical surface coefficient] r19: ε = 0.10000 × 10 A4 = 0.16345 × 10 ^-3 A6 = 0.64094 × 10 ^-7 A8 = -0.90086 × 10 ^-8

<Example 7> f = 52.5 to 21.0 to 9.2 [Radius of curvature] [Space between upper surfaces of axes] [Refractive index] [Abbe number] r1 28.573 d1 1.300 N1 1.84666 ν1 23.82 r2 18.516 d2 1.500 r3 19.842 d3 5.000 N2 1.71300 ν2 53.93 r4 4149.031 d4 26.305 ~ 14.900 ~ 0.999 r5 33.893 d5 0.900 N3 1.77250 ν3 49.77 r6 12.261 d6 2.200 r7 -24.030 d7 0.900 N4 1.71300 ν4 53.93 r8 13.253 d8 1.600 r9 17.417 d9 2.100 N5 1.43181055. 26.706 r11 ∞ d11 2.000 r12 26.201 d12 3.800 N6 1.67000 ν6 57.07 r13 -35.496 d13 0.100 r14 15.779 d14 3.200 N7 1.67000 ν7 57.07 r15 54.457 d15 1.300 r16 -40.429 d16 1.200 N8 1.80518 ν8 25.43 r17 20.297 d58 6.200 3.200 N9 1.60311 ν9 60.74 r19 * -19.051 d19 0.600 to 2.489 to 0.906 r20 1666.666 d20 1.000 N10 1.52133 ν10 51.06 r21 31.002 d21 3.000 r22 ∞ d22 3.000 N11 1.51680 ν11 64.20 r23 ∞

[Aspherical surface coefficient] r19: ε = 0.10000 × 10 A4 = 0.11615 × 10 ^-3 A6 = 0.91508 × 10 ^-7 A8 = -0.606050 × 10 ^-8

<Embodiment 8> f = 37.9 to 15.0 to 6.7 [Radius of curvature] [Space between upper surfaces of axes] [Refractive index] [Abbe number] r1 16.014 d1 0.800 N1 1.84666 ν1 23.82 r2 12.288 d2 0.800 r3 13.330 d3 5.400 N2 1.64000 ν2 58.61 r4 * 279.898 d4 17.985 〜 10.652 〜 1.500 r5 -38.676 d5 0.900 N3 1.75450 ν3 51.57 r6 6.452 d6 3.000 r7 -20.312 d7 2.500 N4 1.83350 ν4 21.00 r8 * -14.447 d8 1.000 〜 8.334 〜 17.485 r9 ∞ 600 d9 1.500 1.600 r10 6.611 d10 1.500 N5 1.58170 ν5 69.75 r11 * 14.657 d11 2.500 ~ 0.989 ~ 1.159 r12 18.061 d12 0.900 N6 1.84666 ν6 23.82 r13 8.051 d13 4.000 N7 1.67000 ν7 57.07 r14 * -9.052 d14 0.400 ~ 1.911 ~ 1.741 r15 63.814 d15 ν8 49.77 r16 8.336 d16 1.000 r17 ∞ d17 3.000 N9 1.51680 ν9 64.20 r18 ∞

[Aspherical coefficient] r4: ε = 0.10000 × 10 A4 = -0.46892 × 10 ^-6 A6 = 0.27175 × 10 ^-6 A8 = -0.97065 × 10 ^-8 A10 = 0.12173 × 10 ^-9 A12 = -0.56753 × 10 ^-12 r8: ε = 0.10000 × 10 A4 = -0.185 10 × 10 ^-3 A6 = -0.34 435 × 10 ^-5 A8 = 0.17003 × 10 ^-6 A10 = -0.15627 × 10 ^-8 A12 = -0.17452 × 10 ^-9 r11 : ε = 0.10000 × 10 A4 = 0.57930 × 10 ^-3 A6 = -0.34193 × 10 ^-6 A8 = 0.31132 × 10 ^-7 A10 = -0.51752 × 10 ^-9 A12 = 0.63248 × 10 ^-11 r14: ε = 0.10000 × 10 A4 = 0.72276 x 10 ^-3 A6 = 0.79727 x 10 ^-5 A8 = -0.22299 x 10 ^-6 A10 = -0.12372 x 10 ^-7 A12 = 0.99052 x 10 ^-9

<Example 9> f = 39.4 to 14.2 to 6.9 [radius of curvature] [axis upper surface spacing] [refractive index] [Abbe number] r1 20.490 d1 1.300 N1 1.80518 ν1 25.43 r2 13.886 d2 1.000 r3 15.077 d3 5.300 N2 1.69680 ν2 56.47 r4 -219.742 d4 16.579 ~ 9.604 ~ 1.500 r5 -29.412 d5 1.000 N3 1.69680 ν3 56.47 r6 * 6.085 d6 2.250 r7 10.073 d7 1.800 N4 1.84666 ν4 23.82 r8 14.022 d8 1.687 ~ 8.662 ~ 16.767 r9 ∞ ~ d9 1.700 ~ 1.700 ~ 1.700 ~ 1.700 * 8.265 d10 4.600 N5 1.67000 ν5 57.07 r11 448.340 d11 4.000 ~ 1.012 ~ 1.751 r12 -118.240 d12 1.300 N6 1.80518 ν6 25.43 r13 7.499 d13 1.475 r14 * 7.602 d14 4.500 N7 1.69680 ν7 56.47 r15 -10.232 d15 1.000 ~ 3.988 ~ 3.988 d16 1.000 N8 1.80741 ν8 31.59 r17 -22.396 d17 1.600 r18 ∞ d18 4.500 N9 1.51680 ν9 64.20 r19 ∞

[Aspherical surface coefficient] r6: ε = 0.10000 × 10 A4 = -0.26616 × 10 ^-3 A6 = -0.14555 × 10 ^-4 A8 = -0.22727 × 10 ^-6 r10: ε = 0.10000 × 10 A4 = -0.86170 ^{× 10 -4 A6 = -0.30935 × 10} -5 A8 = -0.18261 × 10 -7 r14: ε = 0.10000 × 10 A4 = -0.61607 × 10 -3 A6 = -0.23279 × 10 -5 A8 = -0.32678 × 10 - ⁷

<Example 10> f = 39.4 to 14.2 to 6.9 [radius of curvature] [axis upper surface spacing] [refractive index] [Abbe number] r1 19.942 d1 1.300 N1 1.80518 ν1 25.43 r2 13.631 d2 1.000 r3 14.773 d3 5.300 N2 1.69680 ν2 56.47 r4 -331.809 d4 16.436 ~ 9.500 ~ 1.500 r5 -33.333 d5 1.000 N3 1.69680 ν3 56.47 r6 * 6.184 d6 2.250 r7 9.645 d7 1.800 N4 1.84666 ν4 23.82 r8 12.482 d8 1.687 ~ 8.700 ~ 1.624 r9 ∞ ~ d9 1.700 ~ 1.700 ~ 1.700 * 8.888 d10 4.600 N5 1.67000 ν5 57.07 r11 -117.312 d11 4.000 ~ 0.843 ~ 1.545 r12 -256.936 d12 1.300 N6 1.80518 ν6 25.43 r13 7.568 d13 1.475 r14 * 8.000 d14 4.500 N7 1.69680 ν7 56.47 r15 -10.311 d15 1.000 ~ 4.157 ~ 3. 13.065 d16 1.000 N8 1.80741 ν8 31.59 r17 -42.177 d17 1.600 r18 ∞ d18 4.500 N9 1.51680 ν9 64.20 r19 ∞

[Aspherical surface coefficient] r6: ε = 0.10000 × 10 A4 = -0.22458 × 10 ^-3 A6 = -0.15414 × 10 ^-4 A8 = -0.55436 × 10 ^-7 r10: ε = 0.10000 × 10 A4 = -0.77729 × 10 ^-4 A6 = -0.37877 × 10 ^-5 A8 = 0.13606 × 10 ^-7 r14: ε = 0.10000 × 10 A4 = -0.53817 × 10 ^-3 A6 = -0.19745 × 10 ^-5 A8 = -0.53470 × 10 ^-8

<Embodiment 11> f = 37.9 to 14.0 to 6.7 [Radius of curvature] [Space between upper surfaces of axes] [Refractive index] [Abbe number] r1 19.916 d1 0.800 N1 1.84666 ν1 23.82 r2 13.217 d2 0.800 r3 14.147 d3 5.000 N2 1.72000 ν2 50.31 r4 * 341.353 d4 20.026 to 11.021 to 1.500 r5 -56.600 d5 0.900 N3 1.77250 ν3 49.77 r6 6.143 d6 3.000 r7 * -63.044 d7 2.500 N4 1.83350 ν4 21.00 r8 * -20.633 d8 1.000 to 1.0004 to 19.526 r9 ∞ r9 * 10.985 d10 3.000 N5 1.60311 ν5 60.74 r11 -30.935 d11 1.500 N6 1.84666 ν6 23.82 r12 87.340 d12 2.800 ~ 1.560 ~ 1.913 r13 12.304 d13 5.000 N7 1.60311 ν7 60.74 r14 * -9.651 d14 0.400 ~ 1.550 ~ 1.287 r15 110.616 d15 0.900 r16 9.215 d16 2.500 r17 ∞ d17 5.500 N9 1.51680 ν9 64.20 r18 ∞

[Aspherical surface coefficient] r4: ε = 0.10000 × 10 A4 = -0.87094 × 10 ^-6 A6 = 0.14165 × 10 ^-7 A8 = -0.44656 × 10 ^-9 A10 = -0.26811 × 10 ^-11 A12 = 0.38828 × 10 ^-13 r7: ε = 0.10000 × 10 r8: ε = 0.10000 × 10 A4 = -0.23379 × 10 ^-3 A6 = -0.50349 × 10 ^-5 A8 = 0.27650 × 10 ^-6 A10 = -0.403 46 × 10 ^-8 A12 = ^{-0.58166 × 10 -9 r10: ε =} 0.10000 × 10 A4 = -0.14197 × 10 -3 A6 = -0.53350 × 10 -5 A8 = 0.84929 × 10 -6 A10 = -0.48014 × 10 -7 A12 = 0.97803 × 10 - ⁹ r14: ε = 0.10000 × 10 A4 = 0.70910 × 10 ^-3 A6 = 0.38848 × 10 ^-4 A8 = -0.47085 × 10 ^-5 A10 = 0.19590 × 10 ^-6 A12 = -0.23932 × 10 ^-8

<Example 12> f = 39.4 to 18.0 to 6.9 [Radius of curvature] [Axis upper surface spacing] [Refractive index] [Abbe number] r1 86.152 d1 1.000 N1 1.84666 ν1 23.82 r2 24.389 d2 2.700 N2 1.69680 ν2 56.47 r3- 90.128 d3 0.100 r4 15.050 d4 2.100 N3 1.69100 ν3 54.75 r5 40.351 d5 12.392 ~ 7.681 ~ 0.600 r6 34.592 d6 0.900 N4 1.78850 ν4 45.68 r7 7.036 d7 2.100 r8 -9.959 d8 0.900 N5 1.77250 ν5 49.77 r9 12.6 d84 1.70 d 35.905 d10 1.000 to 5.711 to 12.792 r11 ∞ d11 1.000 r12 8.267 d12 2.200 N7 1.62280 ν7 56.88 r13 * 26.911 d13 2.500 to 1.815 to 3.622 r14 12.729 d14 0.900 N8 1.84666 ν8 23.82 r15 6.358 d15 3.700 N9 1.62280 ν9 56.88 r16 ~ 2.481 ~ 3.074 r17 -158.124 d17 1.000 N10 1.87800 ν10 38.14 r18 13.664 d18 5.500 ~ 3.904 ~ 1.504 r19 ∞ d19 5.500 N11 1.51680 ν11 64.20 r20 ∞

[Aspherical surface coefficient] r13: ε = 0.10000 × 10 A4 = 0.42986 × 10 ^-3 A6 = -0.43950 × 10 ^-7 A8 = -0.11822 × 10 ^-6 A10 = 0.24541 × 10 ^-8 A12 = 0.43350 × 10 ^-9 r16: ε = 0.10000 × 10 A4 = 0.46156 × 10 ^-3 A6 = 0.16964 × 10 ^-4 A8 = -0.12729 × 10 ^-5 A10 = -0.20 618 × 10 ^-7 A12 = 0.31433 × 10 ^-8

<Example 13> f = 39.4 to 18.0 to 6.9 [radius of curvature] [axis upper surface spacing] [refractive index] [Abbe number] r1 64.827 d1 1.000 N1 1.84666 ν1 23.82 r2 19.547 d2 2.600 N2 1.69680 ν2 56.47 r3- 80.677 d3 0.100 r4 13.152 d4 2.000 N3 1.69680 ν3 56.47 r5 34.963 d5 10.261 ~ 6.427 ~ 0.600 r6 30.407 d6 0.900 N4 1.77250 ν4 49.77 r7 5.887 d7 2.100 r8 -8.338 d8 0.900 N5 1.77250 ν5 49.77 r9 9.23 d9 9.295 d9 38.198 d10 1.000 ~ 4.834 ~ 10.661 r11 ∞ d11 1.000 r12 8.315 d12 2.200 N7 1.51680 ν7 64.20 r13 * 63.280 d13 2.600 ~ 1.878 ~ 3.641 r14 7.363 d14 0.900 N8 1.84666 ν8 23.82 r15 4.773 d15 4.300 N9 1.51680 ν9 -64.36 r16 ~ 2.221 ~ 2.433 r17 100.000 d17 1.000 N10 1.87800 ν10 38.14 r18 9.843 d18 5.500 ~ 4.201 ~ 2.226 r19 ∞ d19 5.500 N11 1.51680 ν11 64.20 r20 ∞

[Aspherical surface coefficient] r13: ε = 0.10000 × 10 A4 = 0.40106 × 10 ^-3 A6 = -0.72512 × 10 ^-6 A8 = -0.99919 × 10 ^-7 A10 = 0.16958 × 10 ^-9 A12 = 0.27929 × 10 ^-9 r16: ε = 0.10000 × 10 A4 = 0.82745 × 10 ^-3 A6 = 0.24478 × 10 ^-4 A8 = -0.21214 × 10 ^-5 A10 = -0.29969 × 10 ^-7 A12 = 0.37820 × 10 ^-8

<Example 14> f = 39.4 to 18.0 to 6.9 [Radius of curvature] [Axis upper surface spacing] [Refractive index] [Abbe number] r1 92.482 d1 1.000 N1 1.84666 ν1 23.82 r2 25.503 d2 2.700 N2 1.69680 ν2 56.47 r3- 90.322 d3 0.100 r4 15.383 d4 2.100 N3 1.69100 ν3 54.75 r5 41.948 d5 12.676 ~ 7.858 ~ 0.600 r6 34.831 d6 0.900 N4 1.78850 ν4 45.68 r7 7.083 d7 2.100 r8 -9.934 d8 0.900 N5 1.77250 ν5 49.77 r9 12.6 d84 1.70 n 34.088 d10 1.000 ~ 5.818 ~ 13.076 r11 ∞ d11 1.000 r12 8.149 d12 2.200 N7 1.62280 ν7 56.88 r13 * 27.317 d13 2.500 ~ 1.899 ~ 3.791 r14 12.671 d14 0.900 N8 1.84666 ν8 23.82 r15 6.165 d15 3.700 N9 1.62280 0.200 9.76 r ~ 2.433 ~ 3.001 r17 -263.057 d17 1.000 N10 1.87800 ν10 38.14 r18 13.355 d18 5.500 ~ 3.867 ~ 1.408 r19 ∞ d19 5.500 N11 1.51680 ν11 64.20 r20 ∞

[0075] [aspherical coefficients] r13: ε = 0.10000 × 10 A4 = 0.42340 × 10 -3 A6 = 0.16431 × 10 -5 A8 = -0.15757 × 10 -6 A10 = 0.10622 × 10 -9 A12 = 0.29202 × 10 - ⁹ r16: ε = 0.10000 × 10 A4 = 0.43325 × 10 ^-3 A6 = 0.18411 × 10 ^-4 A8 = -0.13186 × 10 ^-5 A10 = -0.22053 × 10 ^-7 A12 = 0.31693 × 10 ^-8

<Example 15> f = 39.4 to 18.0 to 6.9 [Radius of curvature] [Axis upper surface spacing] [Refractive index] [Abbe number] r1 84.186 d1 1.000 N1 1.84666 ν1 23.82 r2 23.136 d2 2.700 N2 1.69680 ν2 56.47 r3- 78.143 d3 0.100 r4 15.376 d4 2.100 N3 1.69100 ν3 54.75 r5 42.093 d5 12.260 ~ 7.568 ~ 0.600 r6 40.768 d6 0.900 N4 1.78850 ν4 45.68 r7 7.470 d7 2.100 r8 -9.580 d8 0.900 N5 1.77250 ν5 49.77 r9 10.23.d86 2.10 30.257 d10 1.000 ~ 5.692 ~ 12.660 r11 ∞ d11 1.000 r12 12.086 d12 1.200 N7 1.83350 ν7 21.00 r13 7.572 d13 3.000 N8 1.60311 ν8 60.74 r14 * 178.079 d14 2.500 ~ 1.557 ~ 3.032 r15 * 12.228 d15 4.000 N9 1.69680 d16 r13 * 47. 0.200 to 2.733 to 3.619 r17 -158.124 d17 1.000 N10 1.87800 ν10 38.14 r18 13.664 d18 5.500 to 3.910 to 1.549 r19 ∞ d19 5.500 N11 1.51680 ν11 64.20 r20 ∞

[Aspherical surface coefficient] r14: ε = 0.10000 × 10 A4 = 0.12660 × 10 ^-3 A6 = -0.104 52 × 10 ^-5 A8 = -0.16427 × 10 ^-7 A10 = 0.44668 × 10 ^-8 A12 = 0.38216 × 10 ^-9 r15: ε = 0.10000 × 10 A4 = -0.24686 × 10 ^-4 A6 = 0.17796 × 10 ^-5 A8 = -0.15298 × 10 ^-6 A10 = -0.12076 × 10 ^-9 A12 = 0.81161 × 10 ^-9 r16: ε = 0.10000 × 10 A4 = 0.31970 × 10 ^-3 A6 = 0.11050 × 10 ^-4 A8 = -0.98216 × 10 ^-6 A10 = -0.10961 × 10 ^-7 A12 = 0.27240 × 10 ^-8

<Example 16> f = 37.9 to 14.0 to 6.7 [Radius of curvature] [Space between upper surfaces of axes] [Refractive index] [Abbe number] r1 146.268 d1 1.300 N1 1.83350 ν1 21.00 r2 46.947 d2 3.100 N2 1.69680 ν2 56.47 r3- 165.241 d3 0.100 r4 22.181 d4 3.000 N3 1.69 100 ν3 54.75 r5 64.536 d5 17.847 to 9.056 to 0.800 r6 105.631 d6 1.100 N4 1.78850 ν4 45.68 r7 9.488 d7 2.800 r8 -11.234 d8 1.100 N5 1.77250 ν5 49.77 r6 19.6 d 23.954 d10 1.000 ~ 9.791 ~ 18.047 r11 ∞ d11 1.000 r12 * 16.695 d12 3.000 N7 1.69680 ν7 56.47 r13 -19.325 d13 1.500 N8 1.83350 ν8 21.00 r14 238.546 d14 2.800 ~ 3.646 ~ 5.252 r15 8.235 d15 7.000 N9 1.60311 * 16 -20.74 r. 0.400 to 1.664 to 2.040 r17 23.487 d17 0.900 N10 1.78831 ν10 47.32 r18 6.824 d18 6.000 to 3.890 to 1.908 r19 ∞ d19 5.500 N11 1.51680 ν11 64.20 r20 ∞

[Aspherical coefficient] r12: ε = 0.10000 × 10 A4 = -0.71891 × 10 ^-4 A6 = 0.38317 × 10 ^-5 A8 = 0.45167 × 10 ^-6 A10 = -0.53033 × 10 ^-7 A12 = 0.12620 × 10 ^-8 r16: ε = 0.10000 × 10 A4 = 0.77134 × 10 ^-3 A6 = 0.40235 × 10 ^-4 A8 = -0.42914 × 10 ^-5 A10 = 0.19768 × 10 ^-6 A12 = -0.31203 × 10 ^-8

<Example 17> f = 39.4 to 18.0 to 6.9 [radius of curvature] [axis upper surface spacing] [refractive index] [Abbe number] r1 97.809 d1 1.000 N1 1.84666 ν1 23.82 r2 24.696 d2 2.700 N2 1.69680 ν2 56.47 r3- 82.492 d3 0.100 r4 15.229 d4 2.100 N3 1.69100 ν3 54.75 r5 35.514 d5 13.401 to 8.342 to 0.601 r6 30.710 d6 0.900 N4 1.78850 ν4 45.68 r7 7.256 d7 2.100 r8 -9.048 d8 0.900 N5 1.77250 ν5 49.77 r9 10.6 d84 2.10 N6 6.50684 24.749 d10 1.000 ~ 6.060 ~ 13.801 r11 ∞ d11 1.000 r12 10.174 d12 1.200 N7 1.83350 ν7 21.00 r13 7.081 d13 3.000 N8 1.61800 ν8 63.39 r14 * 130.179 d14 3.500 ~ 2.905 ~ 4.669 r15 * 14.024 d15 4.000 N9 1.77250 ν9-18.486 r16 * 0.200 to 2.510 to 3.369 r17 -158.124 d17 1.000 N10 1.83350 ν10 21.00 r18 12.914 d18 5.000 to 3.285 to 0.662 r19 ∞ d19 5.500 N11 1.51680 ν11 64.20 r20 ∞

[0081] [aspherical coefficients] r14: ε = 0.10000 × 10 A4 = 0.21664 × 10 -3 A6 = 0.35151 × 10 -6 A8 = -0.13337 × 10 -7 A10 = 0.32233 × 10 -8 A12 = 0.28921 × 10 - ⁹ r15: ε = 0.10000 × 10 A4 = 0.68465 × 10 ^-4 A6 = 0.58052 × 10 ^-5 A8 = -0.12591 × 10 ^-6 A10 = 0.14343 × 10 ^-8 A12 = 0.72816 × 10 ^-9 r16: ε = 0.10000 × 10 A4 = 0.31414 x 10 ^-3 A6 = 0.10620 x 10 ^-4 A8 = -0.55324 x 10 ^-6 A10 = 0.10402 x 10 ^-8 A12 = 0.23356 x 10 ^-8

<Example 18> f = 39.4 to 14.2 to 6.9 [Radius of curvature] [Axial upper surface spacing] [Refractive index] [Abbe number] r1 18.629 d1 0.975 N1 1.84666 ν1 23.82 r2 13.707 d2 1.125 r3 14.771 d3 5.000 N2 1.69680 ν2 56.47 r4 188.311 d4 17.860 ~ 9.459 ~ 0.750 r5 23.644 d5 0.675 N3 1.77250 ν3 49.77 r6 8.826 d6 1.750 r7 -32.014 d7 0.675 N4 1.71300 ν4 53.93 r8 8.056 d8 1.200 r9 10.575 d9 1.875 N5 1.784710 ν5 25.75 r. 18.310 r11 ∞ d11 1.800 r12 * 11.777 d12 4.200 N6 1.55753 ν6 67.17 r13 -17.863 d13 3.200 〜 1.763 〜 3.552 r14 -669.017 d14 0.900 N7 1.84666 ν7 23.82 r15 10.599 d15 0.825 r16 10.105 d16 * 3600 N8 1.71060 ν8 43.25 r17 * ~ 3.212 ~ 2.540 r18 -200.550 d18 1.000 N9 1.80741 ν9 31.59 r19 23.818 d19 3.500 ~ 2.425 ~ 1.308 r20 ∞ d20 5.500 N10 1.51680 ν10 64.20 r21 ∞

[Aspherical surface coefficient] r12: ε = 0.10000 × 10 A4 = -0.22848 × 10 ^-3 A6 = 0.39348 × 10 ^-6 A8 = -0.15755 × 10 ^-7 r17: ε = 0.10000 × 10 A4 = 0.23287 × 10 ^-3 A6 = 0.46834 x 10 ^-5 A8 = -0.146 618 x 10 ^-6

<Example 19> f = 39.4 to 14.2 to 6.9 [radius of curvature] [interval between upper surfaces of axes] [refractive index] [Abbe number] r1 19.820 d1 0.975 N1 1.84666 ν1 23.82 r2 13.802 d2 1.125 r3 14.809 d3 4.475 N2 1.69680 ν2 56.47 r4 643.791 d4 18.343 ~ 9.703 ~ 0.750 r5 24.713 d5 0.675 N3 1.77250 ν3 49.77 r6 9.052 d6 1.750 r7 -25.040 d7 0.675 N4 1.71300 ν4 53.93 r8 8.533 d8 1.200 r9 11.355 d9 1.875 N5 1.78472 ν5 25.75 r. 18.793 r11 ∞ d11 1.800 r12 * 12.774 d12 4.200 N6 1.67000 ν6 57.07 r13 -26.295 d13 3.200 ~ 1.779 ~ 3.721 r14 356.303 d14 0.900 N7 1.84666 ν7 23.82 r15 10.519 d15 0.825 r16 10.395 d16 * 3600 N8 1.69100 ν8 -53.75 r17 * 3.215 to 2.406 r18 -110.981 d18 1.000 N9 1.80741 ν9 31.59 r19 26.385 d19 3.500 to 2.407 to 1.273 r20 ∞ d20 5.500 N10 1.51680 ν10 64.20 r21 ∞

[Aspherical surface coefficient] r12: ε = 0.10000 × 10 A4 = -0.14812 × 10 ^-3 A6 = 0.27315 × 10 ^-6 A8 = -0.11443 × 10 ^-7 r17: ε = 0.10000 × 10 A4 = 0.22296 × 10 ^-3 A6 = 0.53269 × 10 ^-5 A8 = -0.168 59 × 10 ^-6

<Example 20> f = 52.5 to 21.0 to 9.2 [radius of curvature] [interval between upper surfaces of axes] [refractive index] [Abbé number] r1 24.298 d1 1.300 N1 1.83350 ν1 21.00 r2 17.989 d2 1.500 r3 19.563 d3 5.000 N2 1.69680 ν2 56.47 r4 243.623 d4 24.434 to 13.831 to 1.000 r5 154.329 d5 0.900 N3 1.77250 ν3 49.77 r6 10.358 d6 2.200 r7 -227.164 d7 0.900 N4 1.77250 ν4 49.77 r8 19.309 d8 1.600 r9 17.235 d9 2.100 N5 1.8310 6612. 24.834 r11 ∞ d11 2.000 r12 22.218 d12 3.800 N6 1.69680 ν6 56.47 r13 -48.281 d13 0.100 r14 15.426 d14 3.200 N7 1.69680 ν7 56.47 r15 44.058 d15 0.800 r16 -45.276 d16 1.200 N8 1.84666 ν8 23.82 r17 19.392 d17 5.362 5.000 N9 1.75450 ν9 51.57 r19 * -20.482 d19 0.600 to 3.497 to 3.865 r20 2500.000 d20 1.000 N10 1.80518 ν10 25.43 r21 19.965 d21 6.000 to 4.410 to 2.485 r22 ∞ d22 3.000 N11 1.51680 ν11 64.20 r23 ∞

[Aspherical surface coefficient] r19: ε = 0.10000 × 10 A4 = 0.15728 × 10 ^-3 A6 = -0.86399 × 10 ^-6 A8 = 0.14392 × 10 ^-7 A10 = 0.67086 × 10 ^-10 A12 = -0.62523 × 10 ^-11

<Example 21> f = 37.9 to 15.0 to 6.7 [radius of curvature] [axis upper surface spacing] [refractive index] [Abbe number] r1 17.263 d1 0.800 N1 1.84666 ν1 23.82 r2 12.174 d2 0.800 r3 13.112 d3 4.500 N2 1.69680 ν2 56.47 r4 * 332.221 d4 17.823 〜 10.413 〜 1.500 r5 -37.303 d5 0.900 N3 1.77250 ν3 49.77 r6 6.440 d6 3.000 r7 -39.627 d7 2.500 N4 1.83350 ν4 21.00 r8 * -15.697 d8 1.000 〜 8.410 〜 17.323 r9 10∞ d9 1.000 1.500 N5 1.69680 ν5 56.47 r11 * 307.990 d11 2.500 to 1.597 to 2.424 r12 27.734 d12 0.900 N6 1.84666 ν6 23.82 r13 8.579 d13 4.000 N7 1.69680 ν7 56.47 r14 * -9.311 d14 0.400 to 2.803 ~ 3.476 r15 100.000 d15 0.900 N8 49.77 N8 1.77 d16 4.500 to 3.000 to 1.500 r17 ∞ d17 5.500 N9 1.51680 ν9 64.20 r18 ∞

[Aspherical surface coefficient] r4: ε = 0.10000 × 10 A4 = -0.34652 × 10 ^-5 A6 = 0.25270 × 10 ^-6 A8 = -0.91237 × 10 ^-8 A10 = 0.12669 × 10 ^-9 A12 = -0.64902 × 10 ^-12 r8: ε = 0.10000 × 10 A4 = -0.16421 × 10 ^-3 A6 = -0.640 10 × 10 ^-5 A8 = 0.19384 × 10 ^-6 A10 = -0.79101 × 10 ^-9 A12 = -0.22898 × 10 ^-9 r11 : ε = 0.10000 × 10 A4 = 0.26406 × 10 ^-3 A6 = 0.15445 × 10 ^-5 A8 = 0.55491 × 10 ^-7 A10 = -0.31216 × 10 ^-9 A12 = -0.10273 × 10 ^-10 r14: ε = 0.10000 × 10 A4 = 0.34325 × 10 ^-3 A6 = 0.59924 × 10 ^-5 A8 = -0.54598 × 10 ^-6 A10 = -0.12615 × 10 ^-7 A12 = 0.10614 × 10 ^-8

<Example 22> f = 39.4 to 14.3 to 6.9 [Radius of curvature] [Axis upper surface spacing] [Refractive index] [Abbe number] r1 24.178 d1 1.300 N1 1.80518 ν1 25.43 r2 14.221 d2 1.000 r3 15.270 d3 4.800 N2 1.72900 ν2 53.48 r4 -372.212 d4 19.990 ~ 11.473 ~ 1.499 r5 -31.339 d5 1.000 N3 1.69680 ν3 56.47 r6 * 6.021 d6 2.250 r7 10.548 d7 1.800 N4 1.84666 ν4 23.82 r8 17.423 d8 1.65 10.167 ~ 20.140 r9 ∞ d9 1.700 r10 * 10. N5 1.67000 ν5 57.07 r11 -19.324 d11 3.900 〜 2.071 〜 4.555 r12 -44.089 d12 1.300 N6 1.80518 ν6 25.43 r13 9.253 d13 1.475 r14 * 9.165 d14 4.400 N7 1.69680 ν7 56.47 r15 -11.297 d15 1.000 〜 3.856 〜 2.547 r16 225.263 d16 1.25 ν8 31.95 r17 17.677 d17 3.800 to 2.773 to 1.571 r18 ∞ d18 5.500 N9 1.51680 ν9 64.20 r19 ∞

[Aspherical surface coefficient] r6: ε = 0.10000 × 10A4 =-
0.46020 × 10 ^-3 A6 = -0.532 86 × 10 ^-5 A8 = -0.15390 × 10 ^-6 r
10: ε = 0.10000 × 10 A4 = -0.84853 × 10 ^-4 A6 = -0.22505
× 10 ^-5 A8 = 0.12951 × 10 ^-7 r14: ε = 0.10000 × 10 A4 =-
0.43225 x 10 ^-3 A6 = 0.10490 x 10 ^-5 A8 = -0.25365 x 10 ^-7

<Example 23> f = 39.4 to 14.3 to 6.9 [radius of curvature] [axis upper surface spacing] [refractive index] [Abbe number] r1 22.579 d1 1.300 N1 1.80518 ν1 25.43 r2 14.275 d2 1.000 r3 15.467 d3 5.200 N2 1.72900 ν2 53.48 r4 -269.412 d4 17.719 ~ 10.2111 ~ 1.500 r5 -27.449 d5 1.000 N3 1.69680 ν3 56.47 r6 * 6.347 d6 2.250 r7 10.270 d7 1.800 N4 1.84666 ν4 23.82 r8 14.246 d8 1.687 ~ 9.195 ~ 17.906 r9 ∞ d9 1.700 r10 N5 1.67000 ν5 57.07 r11 -39.483 d11 4.000 〜 1.884 〜 3.771 r12 273.130 d12 1.300 N6 1.80518 ν6 25.43 r13 7.298 d13 1.475 r14 * 8.940 d14 4.500 N7 1.69680 ν7 56.47 r15 -10.124 d15 1.000 〜 4.066 〜 3.289 r16 -30.306 d16 1.30 ν8 31.59 r17 53.348 d17 3.297 to 2.347 to 1.297 r18 ∞ d18 4.500 N9 1.51680 ν9 64.20 r19 ∞

[Aspherical surface coefficient] r6: ε = 0.10000 × 10 A4 = -0.38654 × 10 ^-3 A6 = -0.82944 × 10 ^-5 A8 = -0.81480 × 10 ^-7 r10: ε = 0.10000 × 10 A4 = -0.12237 × 10 ^-3 A6 = -0.19356 × 10 ^-5 A8 = -0.21419 × 10 ^-8 r14: ε = 0.10000 × 10 A4 = -0.39002 × 10 ^-3 A6 = -0.17950 × 10 ^-5 A8 = 0.51529 × 10 ^-7

<Example 24> f = 39.4 to 14.3 to 6.9 [Radius of curvature] [Axis upper surface spacing] [Refractive index] [Abbe number] r1 24.358 d1 1.300 N1 1.80518 ν1 25.43 r2 14.815 d2 1.000 r3 16.013 d3 5.200 N2 1.72900 ν2 53.48 r4 -213.019 d4 19.141 to 11.048 to 1.500 r5 -24.138 d5 1.000 N3 1.69680 ν3 56.47 r6 * 6.367 d6 2.250 r7 10.934 d7 1.800 N4 1.84666 ν4 23.82 r8 16.790 d8 1.687 to 9.781 to 19.329 r9 ∞ d9 1.700 r10 N5 1.67000 ν5 57.07 r11 -27.765 d11 4.000 ~ 2.386 ~ 4.876 r12 425.512 d12 1.300 N6 1.80518 ν6 25.43 r13 7.682 d13 1.475 r14 * 8.908 d14 4.500 N7 1.69680 ν7 56.47 r15 -11.172 d15 1.000 ~ 3.590 ~ 2.251 r16 -39.8 d16.39 ν8 31.59 r17 38.028 d17 3.297 to 2.321 to 1.170 r18 ∞ d18 4.500 N9 1.51680 ν9 64.20 r19 ∞

[Aspherical surface coefficient] r6: ε = 0.10000 × 10 A4 = -0.43952 × 10 ^-3 A6 = -0.63851 × 10 ^-5 A8 = -0.11268 × 10 ^-6 r10: ε = 0.10000 × 10 A4 = -0.11063 × 10 ^-3 A6 = -0.17 800 × 10 ^-5 A8 = 0.67912 × 10 ^-8 r14: ε = 0.10000 × 10 A4 = -0.35 260 × 10 ^-3 A6 = -0.10664 × 10 ^-5 A8 = 0.21148 × 10 ^-7

<Example 25> f = 37.9 to 14.0 to 6.7 [Radius of curvature] [Axis upper surface spacing] [Refractive index] [Abbe number] r1 20.193 d1 0.800 N1 1.84666 ν1 23.82 r2 13.084 d2 0.800 r3 14.305 d3 4.500 N2 1.72000 ν2 50.31 r4 * -928.574 d4 18.803 ~ 10.005 ~ 1.500 r5 -42.129 d5 0.900 N3 1.77250 ν3 49.77 r6 6.084 d6 3.000 r7 * -86.989 d7 2.500 N4 1.83350 ν4 21.00 r8 * -19.752 d8 1.000 ~ 9.798 ~ 18.303 r9 ∞ d9 * 11.587 d10 3.000 N5 1.60311 ν5 60.74 r11 -27.334 d11 1.500 N6 1.84666 ν6 23.82 r12 47.478 d12 1.800 ~ 2.332 ~ 3.805 r13 13.300 d13 5.000 N7 1.60311 ν7 60.74 r14 * -8.298 d14 0.400 ~ 1.883 ~ 2.357 r15 104.415 d15 0.94 d 42.81 r16 8.942 d16 5.500 to 3.486 to 1.539 r17 ∞ d17 5.500 N9 1.51680 ν9 64.20 r18 ∞

[Aspherical surface coefficient] r4: ε = 0.10000 × 10 A4 = 0.32907 × 10 ^-6 A6 = -0.76720 × 10 ^-7 A8 = -0.52072 × 10 ^-9 A10 = 0.13153 × 10 ^-10 A12 = -0.76238 × 10 ^-13 r7: ε = 0.10000 × 10 r8: ε = 0.10000 × 10 A4 = -0.24 995 × 10 ^-3 A6 = -0.713 11 × 10 ^-5 A8 = 0.29186 × 10 ^-6 A10 = -0.17122 × 10 ^-8 A12 = ^{-0.49899 × 10 -9 r10: ε =} 0.10000 × 10 A4 = -0.19862 × 10 -3 A6 = -0.56896 × 10 -5 A8 = 0.84851 × 10 -6 A10 = -0.48496 × 10 -7 A12 = 0.92628 × 10 - ⁹ r14: ε = 0.10000 × 10 A4 = 0.66316 × 10 ^-3 A6 = 0.44931 × 10 ^-4 A8 = -0.47158 × 10 ^-5 A10 = 0.19068 × 10 ^-6 A12 = -0.26953 × 10 ^-8

FIGS. 1 to 25 show the first to third embodiments, respectively.
It is a lens block diagram corresponding to 25, and has shown the arrangement | positioning at the telephoto end (L). The arrows (m1), (m2), (m3), (m4) and (m5) in each figure are the first lens component (G1), the second lens component (G2) and the third lens component (G3), respectively. , The movement of the fourth lens component (G4) and the fifth lens component (G5) from the telephoto end (L) to the wide-angle end (S) is schematically shown.

In Example 1, the first lens component (G1) is composed of, in order from the object side, a cemented lens composed of a negative meniscus lens concave to the image side and a biconvex positive lens, and a positive meniscus lens convex to the object side. , From the second lens component (G2) consisting of a negative meniscus lens element concave to the image side and a cemented lens element composed of a biconcave negative lens element and a biconvex positive lens element, and a stop (S) and a positive meniscus lens element convex to the object side The third lens component (G
3) and a fourth lens component (G4) consisting of a cemented lens composed of a negative meniscus lens concave to the image side and a biconvex positive lens,
A negative meniscus lens concave to the image side and a flat plate (for example, a low-pass filter or a face plate, the same applies below)
And a fifth lens component (G5).
The image-side surface of the positive meniscus lens in the third lens component (G3) and the image-side surface of the positive lens in the fourth lens component (G4) are aspherical surfaces.

In Examples 2 and 3, in order from the object side, the first lens component (G1) consisting of a cemented lens including a negative meniscus lens having a concave surface on the image side and a biconvex positive lens, and a positive meniscus lens having a convex surface on the object side is used. ), A second lens component (G2) consisting of a negative meniscus lens concave to the image side and a cemented lens composed of a biconcave negative lens and a biconvex positive lens, and a stop (S) and a negative meniscus concave to the image side. Third lens component (G3) consisting of a lens and a positive meniscus lens convex to the object side, fourth lens component (G4) consisting of a biconvex positive lens, and fifth lens component consisting of a biconcave negative lens and a flat plate (G5) and. The image side surface of the positive meniscus lens in the third lens component (G3) and both surfaces of the positive lens in the fourth lens component (G4) are aspherical surfaces.

In the fourth embodiment, in order from the object side, a cemented lens composed of a negative meniscus lens concave to the image side and a biconvex positive lens, and a first lens component (G1) composed of a positive meniscus lens convex to the object side are provided. , A second lens component (G2) consisting of a negative meniscus lens concave to the image side and a cemented lens composed of a biconcave negative lens and a biconvex positive lens, and a diaphragm (S) and a biconvex positive lens and a biconcave lens. Third lens component (G3) consisting of a negative lens and fourth lens component (G4) consisting of a biconvex positive lens
And the fifth lens component (G
5) consists of The object-side surface of the positive lens in the third lens component (G3) and the image-side surface of the positive lens in the fourth lens component (G4) are aspherical surfaces.

In the fifth embodiment, in order from the object side, the first lens component (G1) consisting of a negative meniscus lens concave to the image side and a positive meniscus lens convex to the object side, a negative meniscus lens concave to the image side, Second lens component (G2) consisting of a biconcave negative lens and a positive meniscus lens convex to the object side, and an aperture (S)
And a third lens component (G3) consisting of a biconvex positive lens, a fourth lens component (G4) consisting of a biconcave negative lens and a biconvex positive lens, and a biconcave negative lens and a flat plate It is composed of five lens components (G5). The third lens component (G
The object side surface of the positive lens in 3) and the image side surface of the positive lens in the fourth lens component (G4) are aspherical surfaces.

In the sixth embodiment, in order from the object side, the first lens component (G1) consisting of a negative meniscus lens concave to the image side and a positive meniscus lens convex to the object side, a negative meniscus lens concave to the image side, A second lens component (G2) consisting of a biconcave negative lens and a positive meniscus lens convex on the object side, an aperture (S),
A third lens component (G3) consisting of a biconvex positive lens, a positive meniscus lens convex to the object side, and a biconcave negative lens, a fourth lens component (G4) consisting of a biconvex positive lens, and a biconcave lens. It is composed of a negative lens and a fifth lens component (G5) composed of a flat plate. The image-side surface of the positive lens in the fourth lens component (G4) is aspherical.

In the seventh embodiment, in order from the object side, the first lens component (G1) consisting of a negative meniscus lens concave to the image side and a positive meniscus lens convex to the object side, a negative meniscus lens concave to the image side, A second lens component (G2) consisting of a biconcave negative lens and a positive meniscus lens convex on the object side, an aperture (S),
A third lens component (G3) consisting of a biconvex positive lens, a positive meniscus lens convex to the object side and a biconcave negative lens, a fourth lens component (G4) consisting of a biconvex positive lens, and an image side Fifth lens component (G5) consisting of a concave negative meniscus lens and a flat plate
It consists of and. The image-side surface of the positive lens in the fourth lens component (G4) is aspherical.

In the eighth embodiment, in order from the object side, the first lens component (G1) is composed of a negative meniscus lens concave to the image side and a positive meniscus lens convex to the object side, and a biconcave negative lens and an image side. Second lens component consisting of a convex positive meniscus lens
(G2), diaphragm (S), third lens component (G3) consisting of a positive meniscus lens convex on the object side, and a cemented lens consisting of a negative meniscus lens concave on the image side and a biconvex positive lens It is composed of a fourth lens component (G4) and a fifth lens component (G5) including a negative meniscus lens concave on the image side and a flat plate. The image side surface of the positive meniscus lens in the first lens component (G1), the image side surface of the positive meniscus lens in the second lens component (G2), and the positive meniscus lens in the third lens component (G3) The image side surface and the image side surface of the positive lens in the fourth lens component (G4) are aspherical surfaces.

In the ninth embodiment, in order from the object side, the first lens component (G1) consisting of a negative meniscus lens concave to the image side and a biconvex positive lens, a biconcave negative lens and a positive lens convex to the object side. Second lens component (G2) consisting of meniscus lens, and diaphragm
(S) and a positive meniscus lens convex on the object side
From the lens component (G3), the fourth lens component (G4) consisting of a biconcave negative lens and a biconvex positive lens, and the fifth lens component (G5) consisting of a negative meniscus lens concave to the object side and a flat plate It is configured. The image side surface of the negative lens in the second lens component (G2), the object side surface of the positive lens in the third lens component (G3), and the object side of the positive lens in the fourth lens component (G4). The surface of is an aspherical surface.

In the tenth embodiment, in order from the object side, a negative meniscus lens element having a concave surface on the image side and a biconvex positive lens element are provided.
A lens component (G1), a second lens component (G2) consisting of a biconcave negative lens and a positive meniscus lens convex on the object side, and an aperture
(S) and the third lens component (G3) consisting of a biconvex positive lens
And a fourth lens component (G4) composed of a biconcave negative lens and a biconvex positive lens, and a fifth lens component (G5) composed of a negative meniscus lens concave to the object side and a flat plate. The image-side surface of the negative lens in the second lens component (G2),
The object-side surface of the positive lens in the third lens component (G3) and the fourth surface
The object-side surface of the positive lens in the lens component (G4) is aspherical.

The eleventh embodiment is composed of a negative meniscus lens element concave to the image side and a biconvex positive lens element in order from the object side.
A lens component (G1), a second lens component (G2) consisting of a biconcave negative lens and a positive meniscus lens convex to the image side, and an aperture
(S) and a third lens component (G3) consisting of a cemented lens composed of a biconvex positive lens and a biconcave negative lens, a fourth lens component (G4) consisting of a biconvex positive lens, and a concave surface on the image side. And a fifth lens component (G5) consisting of a flat plate. The image side surface of the positive meniscus lens in the first lens component (G1), both surfaces of the positive meniscus lens in the second lens component (G2), and the object side of the positive lens in the third lens component (G3) The surface and the image-side surface of the positive lens in the fourth lens component (G4) are aspherical surfaces.

In Examples 12 and 14, from the object side,
The first lens component (G1) consisting of a cemented lens composed of a negative meniscus lens concave to the image side and a biconvex positive lens, and a positive meniscus lens convex to the object side, and a negative meniscus lens concave to the image side and a biconcave lens. Second lens component (G2) consisting of cemented lens consisting of negative lens and biconvex positive lens, and diaphragm
Third lens consisting of (S) and positive meniscus lens convex on the object side
A lens component (G3), a fourth lens component (G4) made up of a cemented lens composed of a negative meniscus lens concave to the image side and a biconvex positive lens, and a fifth lens component (G made up of a biconcave negative lens
5) and a flat plate. The third lens component
The image side surface of the positive meniscus lens in (G3) and the image side surface of the positive lens in the fourth lens component (G4) are aspherical surfaces.

In the thirteenth embodiment, the first lens component (G1) is composed of, in order from the object side, a cemented lens including a concave negative meniscus lens and a biconvex positive lens on the image side, and a positive meniscus lens convex on the object side. , From the second lens component (G2) consisting of a negative meniscus lens element concave to the image side and a cemented lens element composed of a biconcave negative lens element and a biconvex positive lens element, and a stop (S) and a positive meniscus lens element convex to the object side The third lens component
(G3) and the fourth lens component (G4) consisting of a cemented lens consisting of a negative meniscus lens concave to the image side and a biconvex positive lens
And a fifth lens component (G5) consisting of a negative meniscus lens concave on the image side, and a flat plate. The image-side surface of the positive meniscus lens in the third lens component (G3) and the fourth lens
The image-side surface of the positive lens in the lens component (G4) is aspherical.

In the fifteenth embodiment, in order from the object side, a cemented lens including a concave negative meniscus lens and a biconvex positive lens on the image side, and a first lens component (G1) including a positive meniscus lens convex on the object side are provided. , A second lens component (G2) consisting of a negative meniscus lens concave to the image side and a cemented lens composed of a biconcave negative lens and a biconvex positive lens, and a diaphragm (S) and a negative meniscus lens concave to the image side, Third lens component (G3) consisting of a cemented lens consisting of a positive meniscus lens convex to the object side and fourth lens component (G4) consisting of a biconvex positive lens
And a fifth lens component (G5) composed of a biconcave negative lens, and a flat plate. The image side surface of the positive meniscus lens in the third lens component (G3) and the fourth lens component (G4)
Both surfaces of the positive lens in the inside are aspherical.

In the sixteenth embodiment, in order from the object side, a cemented lens including a concave negative meniscus lens and a biconvex positive lens on the image side, and a first lens component (G1) including a positive meniscus lens convex on the object side are provided. , A second lens component (G2) consisting of a negative meniscus lens concave to the image side and a cemented lens composed of a biconcave negative lens and a biconvex positive lens, and a diaphragm (S) and a biconvex positive lens and a biconcave lens. Third lens component (G3) consisting of cemented lens consisting of negative lens, fourth lens component (G4) consisting of biconvex positive lens, and fifth lens component (G5) consisting of negative meniscus lens concave to the image side And a flat plate. The object-side surface of the positive lens in the third lens component (G3) and the image-side surface of the positive lens in the fourth lens component (G4) are aspherical surfaces.

The seventeenth embodiment has, in order from the object side, a cemented lens composed of a negative meniscus lens concave to the image side and a biconvex positive lens, and a first lens component (G1) composed of a positive meniscus lens convex to the object side. , A second lens component (G2) consisting of a negative meniscus lens concave to the image side and a cemented lens composed of a biconcave negative lens and a biconvex positive lens, and a diaphragm (S) and a negative meniscus lens concave to the image side, Third lens component (G3) consisting of a cemented lens consisting of a positive meniscus lens convex to the object side and fourth lens component (G4) consisting of a biconvex positive lens
And a fifth lens component (G5) composed of a biconcave negative lens, and a flat plate. The image-side surface of the positive lens in the third lens component (G3) and both surfaces of the positive lens in the fourth lens component (G4) are aspherical surfaces.

In the eighteenth embodiment, in order from the object side, a first lens component (G1) consisting of a negative meniscus lens concave to the image side and a positive meniscus lens convex to the object side, a negative meniscus lens concave to the image side, Second lens component (G2) consisting of a biconcave negative lens and a positive meniscus lens convex to the object side, and an aperture (S)
And a third lens component (G3) including a biconvex positive lens, a fourth lens component (G4) including a biconcave negative lens and a biconvex positive lens, and a fifth lens component including a biconcave negative lens (G5)
And a flat plate. The third lens component (G
The object side surface of the positive lens in 3) and the image side surface of the positive lens in the fourth lens component (G4) are aspherical surfaces.

In Example 19, in order from the object side, a first lens component (G1) consisting of a negative meniscus lens concave to the image side and a positive meniscus lens convex to the object side, a negative meniscus lens concave to the image side, Second lens component (G2) consisting of a biconcave negative lens and a positive meniscus lens convex to the object side, and an aperture (S)
And a third lens component (G3) consisting of a biconvex positive lens, a negative meniscus lens concave to the image side and a fourth lens component (G4) consisting of a biconvex positive lens, and a biconcave negative lens 5
It is composed of a lens component (G5) and a flat plate. The object-side surface of the positive lens in the third lens component (G3) and the image-side surface of the positive lens in the fourth lens component (G4) are aspherical surfaces.

The twentieth embodiment has, in order from the object side, a first lens component (G1) consisting of a negative meniscus lens concave to the image side and a positive meniscus lens convex to the object side, a negative meniscus lens concave to the image side, A second lens component (G2) consisting of a biconcave negative lens and a positive meniscus lens convex on the object side, and a diaphragm
(S), a biconvex positive lens, a third lens component (G3) consisting of a positive meniscus lens convex on the object side and a biconcave negative lens,
The fourth lens component (G4) consisting of a biconvex positive lens and the fifth lens component (G5) consisting of a negative meniscus lens concave to the image side.
And a flat plate. The fourth lens component (G
The image-side surface of the positive lens in 4) is an aspherical surface.

In Example 21, in order from the object side, the first lens component (G1) consisting of a negative meniscus lens concave to the image side and a positive meniscus lens convex to the object side, and a biconcave negative lens and an image side Second lens component (G2) consisting of a convex positive meniscus lens, diaphragm (S) and third lens component (G3) consisting of a positive meniscus lens convex to the object side, negative meniscus lens concave to the image side and both It is composed of a fourth lens component (G4) composed of a cemented lens composed of a convex positive lens, a fifth lens component (G5) composed of a negative meniscus lens concave to the image side, and a flat plate. The image side surface of the positive meniscus lens in the first lens component (G1), the image side surface of the positive meniscus lens in the second lens component (G2), and the positive meniscus lens in the third lens component (G3) The image side surface and the image side surface of the positive lens in the fourth lens component (G4) are aspherical surfaces.

In the twenty-second embodiment, in order from the object side, a negative meniscus lens element concave to the image side and a biconvex positive lens element are provided.
A lens component (G1), a second lens component (G2) consisting of a biconcave negative lens and a positive meniscus lens convex on the object side, and an aperture
(S) and third lens component (G3) consisting of a biconvex positive lens
And a fourth lens component (G4) consisting of a biconcave negative lens and a biconvex positive lens, a fifth lens component (G5) consisting of a negative meniscus lens concave to the image side, and a flat plate. ..
The image-side surface of the negative meniscus lens in the second lens component (G2), the object-side surface of the positive lens in the third lens component (G3), and the object of the positive lens in the fourth lens component (G4) The side surface is an aspherical surface.

In Examples 23 and 24, from the object side,
The first lens component (G1) consisting of a negative meniscus lens concave to the image side and a positive biconvex lens, and the second lens component (G2) consisting of a negative lens biconcave and a positive meniscus lens convex to the object side
And a third lens component (G3) consisting of a diaphragm (S) and a biconvex positive lens, a fourth lens component (G4) consisting of a negative meniscus lens concave to the image side and a biconvex positive lens, and a biconcave It is composed of a fifth lens component (G5), which is a negative lens, and a flat plate. The image side surface of the negative lens in the second lens component (G2), the object side surface of the positive lens in the third lens component (G3), and the object side of the positive lens in the fourth lens component (G4). The surface of is an aspherical surface.

The twenty-fifth embodiment is arranged such that, in order from the object side, a negative meniscus lens element concave to the image side and a biconvex positive lens element are provided.
A lens component (G1), a second lens component (G2) consisting of a biconcave negative lens and a positive meniscus lens convex to the image side, and an aperture
(S) and a third lens component (G3) consisting of a cemented lens composed of a biconvex positive lens and a biconcave negative lens, a fourth lens component (G4) consisting of a biconvex positive lens, and a concave surface on the image side. It is composed of a fifth lens component (G5) consisting of a negative meniscus lens and a flat plate. Incidentally, the image side surface of the positive lens in the first lens component (G1), both surfaces of the positive lens in the second lens component (G2), the object side surface of the positive lens in the third lens component (G3), and The image-side surface of the positive lens in the fourth lens component (G4) is aspherical.

26 to 50 are each the same as the first embodiment.
It is an aberration diagram corresponding to ~ 25, telephoto end (long focal end) <L
>, Intermediate focal length state <M>, and wide-angle end (short focal end) <S>. Solid line (d) is the aberration for d line,
The alternate long and short dash line (g) represents aberration for the g line, the alternate long and two short dash line (c) represents aberration for the c line, and the dashed line (SC) represents the sine condition. Further, the broken line (DM) and the solid line (DS) represent astigmatism on the meridional surface and the sagittal surface, respectively.

Tables 1 and 2 show Example 1 respectively.
11 and Examples 12 to 25 show fS, φ1, φ2, φ3 and φ4 in the conditional expressions (1) to (7), and Tables 3 and 4 show Examples 1 to 11 and Examples, respectively. 12-25
Of φ5 in conditional expression (7) and | φ2 | in conditional expression (3)
The value of / φ1 and the value of (φ3 + φ4) / | φ2 | in the conditional expression (6) are shown.

[0123]

[Equation 1]

[0124]

[Table 1]

[0125]

[Table 2]

[0126]

[Table 3]

[0127]

[Table 4]

[0128]

As described above, according to the present invention, in order from the object side, the first lens component having a positive refractive power, the second lens component having a negative refractive power, and the first lens component having a positive refractive power are arranged. It is composed of three lens components, a fourth lens component having a positive refractive power, and a fifth lens component having a negative refractive power, and the first lens component is fixed during zooming. Thus, it is possible to realize a zoom lens that has a high zoom ratio and a large aperture ratio, and that has achieved compactness, low cost, and high aberration performance. In particular, by effectively using an aspherical surface, which is more advantageous for downsizing and reducing the number of lens components, a bright zoom lens with a variable power ratio of about 6 and an F number of about 1.6 to 1.8 retains high performance. It can be realized while doing.

[Brief description of drawings]

FIG. 1 is a lens configuration diagram of a first embodiment of the present invention.

FIG. 2 is a lens configuration diagram of a second embodiment of the present invention.

FIG. 3 is a lens configuration diagram of a third embodiment of the present invention.

FIG. 4 is a lens configuration diagram of a fourth embodiment of the present invention.

FIG. 5 is a lens configuration diagram of a fifth embodiment of the present invention.

FIG. 6 is a lens configuration diagram of a sixth embodiment of the present invention.

FIG. 7 is a lens configuration diagram of a seventh embodiment of the present invention.

FIG. 8 is a lens configuration diagram of Example 8 of the present invention.

FIG. 9 is a lens configuration diagram of Example 9 of the present invention.

FIG. 10 is a lens configuration diagram of Example 10 of the present invention.

FIG. 11 is a lens configuration diagram of Example 11 of the present invention.

FIG. 12 is a lens configuration diagram of a twelfth embodiment of the present invention.

FIG. 13 is a lens configuration diagram of Example 13 of the present invention.

FIG. 14 is a lens configuration diagram of Example 14 of the present invention.

FIG. 15 is a lens configuration diagram of Example 15 of the present invention.

FIG. 16 is a lens configuration diagram of Example 16 of the present invention.

FIG. 17 is a lens configuration diagram of an example 17 of the present invention.

FIG. 18 is a lens configuration diagram of Example 18 of the present invention.

FIG. 19 is a lens configuration diagram of Example 19 of the present invention.

FIG. 20 is a lens configuration diagram of a twentieth embodiment of the present invention.

FIG. 21 is a lens configuration diagram of Embodiment 21 of the present invention.

FIG. 22 is a lens configuration diagram of Example 22 of the present invention.

FIG. 23 is a lens configuration diagram of Example 23 of the present invention.

FIG. 24 is a lens configuration diagram of Example 24 of the present invention.

FIG. 25 is a lens configuration diagram of an example 25 of the present invention.

FIG. 26 is an aberration diagram of Example 1 of the present invention.

FIG. 27 is an aberration diagram of Example 2 of the present invention.

FIG. 28 is an aberration diagram for Example 3 of the present invention.

FIG. 29 is an aberration diagram of Example 4 of the present invention.

FIG. 30 is an aberration diagram of Example 5 of the present invention.

FIG. 31 is an aberration diagram of Example 6 of the present invention.

FIG. 32 is an aberration diagram of Example 7 of the present invention.

FIG. 33 is an aberration diagram of Example 8 of the present invention.

FIG. 34 is an aberration diagram of Example 9 of the present invention.

FIG. 35 is an aberration diagram of Example 10 of the present invention.

FIG. 36 is an aberration diagram for Example 11 of the present invention.

FIG. 37 is an aberration diagram of Example 12 of the present invention.

FIG. 38 is an aberration diagram of Example 13 of the present invention.

FIG. 39 is an aberration diagram of Example 14 of the present invention.

FIG. 40 is an aberration diagram of Example 15 of the present invention.

FIG. 41 is an aberration diagram of Example 16 of the present invention.

FIG. 42 is an aberration diagram of Example 17 of the present invention.

FIG. 43 is an aberration diagram of Example 18 of the present invention.

FIG. 44 is an aberration diagram of Example 19 of the present invention.

FIG. 45 is an aberration diagram of Example 20 of the present invention.

FIG. 46 is an aberration diagram of Example 21 of the present invention.

FIG. 47 is an aberration diagram of Example 22 of the present invention.

FIG. 48 is an aberration diagram of Example 23 of the present invention.

FIG. 49 is an aberration diagram of Example 24 of the present invention.

50 is an aberration diagram of Example 25 of the present invention. FIG.

[Explanation of symbols]

 (G1)… First lens component (G2)… Second lens component (G3)… Third lens component (G4)… Fourth lens component (G5)… Fifth lens component (S)… Aperture

Claims (1)

[Claims] 1. A first lens element having a positive refractive power in order from the object side.
A lens component and a second lens component having a negative refractive power,
The third lens component has a positive refracting power, the fourth lens component having a positive refracting power, and the fifth lens component having a negative refracting power, and the first lens component is a variable lens component. A zoom lens characterized by being fixed in the middle.