KR20190135892A - Optical imaging system - Google Patents

Abstract

According to one embodiment of the present invention, an imaging optical system comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged sequentially along an optical axis from an object side toward an upper side, and spacers are arranged between adjacent lenses respectively. When an inner diameter of a sixth spacer arranged between the sixth lens and the seventh lens is S6d and a total focal length of the optical system including the first lens to the seventh lens is f, 0.5<S6d/f<1.4 can be satisfied. Therefore, the present invention provides the imaging optical system which can easily be applied to a portable electronic device and can easily correct an aberration.

Description

Optical imaging system

The present invention relates to an imaging optical system.

Recently, portable terminals are equipped with a camera to enable video call and picture taking. In addition, as the utilization of the camera mounted on the portable terminal increases, the demand for higher resolution and higher performance of the portable terminal camera is increasing.

As a result, the number of lenses provided in the camera is increasing. However, since a portable terminal equipped with a camera is being miniaturized, it is very difficult to arrange a lens in the camera.

Therefore, aberration correction is possible to realize high resolution, and research that can arrange a plurality of lenses in a limited space is required.

An object according to an embodiment of the present invention is to provide an imaging optical system that can be easily applied to a portable electronic device and easy to correct aberration.

The imaging optical system according to an exemplary embodiment of the present invention includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens that are sequentially disposed along the optical axis from the object side toward the image side. And a spacer disposed between adjacent lenses, and an inner diameter of the sixth spacer disposed between the sixth and seventh lenses is S6d, and includes the first to seventh lenses. When the total focal length of the optical system is f, 0.5 < S6d / f < 1.4 can be satisfied.

According to the imaging optical system according to the exemplary embodiment of the present invention, the optical system can be miniaturized and the aberration correction can be easily performed, thereby achieving high resolution.

1 is a configuration diagram of an imaging optical system according to a first embodiment of the present invention.
FIG. 2 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 1.
3 is a configuration diagram of an imaging optical system according to a second exemplary embodiment of the present invention.
4 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 3.
5 is a configuration diagram of an imaging optical system according to a third exemplary embodiment of the present invention.
FIG. 6 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 5.
7 is a configuration diagram of an imaging optical system according to a fourth embodiment of the present invention.
FIG. 8 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 7.
9 is a configuration diagram of an imaging optical system according to a fifth exemplary embodiment of the present invention.
FIG. 10 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 9.
11 is a configuration diagram of an imaging optical system according to a sixth embodiment of the present invention.
FIG. 12 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 11.
13 is a configuration diagram of an imaging optical system according to a seventh embodiment of the present invention.
FIG. 14 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 13.
15 is a configuration diagram of an imaging optical system according to an eighth embodiment of the present invention.
FIG. 16 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 15.
17 is a configuration diagram of an imaging optical system according to a ninth embodiment of the present invention.
FIG. 18 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 17.
19 is a configuration diagram of an imaging optical system according to a tenth embodiment of the present invention.
20 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 19.
21 is a configuration diagram of an imaging optical system according to an eleventh embodiment of the present invention.
FIG. 22 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 21.
23 is a configuration diagram of an imaging optical system according to a twelfth embodiment of the present invention.
FIG. 24 is a curve showing aberration characteristics of the imaging optical system illustrated in FIG. 23.
25 is a configuration diagram of an imaging optical system according to a thirteenth embodiment of the present invention.
FIG. 26 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 25.
27 is a configuration diagram of an imaging optical system according to a fourteenth embodiment of the present invention.
FIG. 28 is a curve showing aberration characteristics of the imaging optical system illustrated in FIG. 27.
29 is a configuration diagram of an imaging optical system according to a fifteenth embodiment of the present invention.
30 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 29.
31 is a configuration diagram of an imaging optical system according to a sixteenth embodiment of the present invention.
32 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 31.
33 is a configuration diagram of an imaging optical system according to a seventeenth embodiment of the present invention.
FIG. 34 is a curve showing aberration characteristics of the imaging optical system illustrated in FIG. 33.
35 is a configuration diagram of an imaging optical system according to an eighteenth embodiment of the present invention.
36 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 35.
37 is a configuration diagram of an imaging optical system according to a nineteenth embodiment of the present invention.
FIG. 38 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 37.
39 is a configuration diagram of an imaging optical system according to a twentieth embodiment of the present invention.
40 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 39.
41 is a configuration diagram of an imaging optical system according to a twenty-first embodiment of the present invention.
FIG. 42 is a curve showing the aberration characteristics of the imaging optical system shown in FIG. 41.
43 is a configuration diagram of an imaging optical system according to a twenty-second embodiment of the present invention.
FIG. 44 is a curve showing the aberration characteristics of the imaging optical system shown in FIG. 43.
45 is a configuration diagram of an imaging optical system according to a twenty-third embodiment of the present invention.
46 is a curve showing aberration characteristics of the imaging optical system shown in FIG. 45.
47 is a configuration diagram of the imaging optical system according to the twenty-fourth embodiment of the present invention.
FIG. 48 is a curve showing aberration characteristics of the imaging optical system illustrated in FIG. 47.
49 is a configuration diagram of the imaging optical system according to the twenty fifth embodiment of the present invention.
50 is a curve illustrating aberration characteristics of the imaging optical system illustrated in FIG. 49.
51 is a configuration diagram of an imaging optical system according to a twenty sixth embodiment of the present invention.
FIG. 52 is a curve showing aberration characteristics of the imaging optical system illustrated in FIG. 50.
53 is a configuration diagram of the imaging optical system according to the twenty-seventh embodiment of the present invention.
54 is a curve showing the aberration characteristics of the imaging optical system shown in FIG. 53.
55 and 56 are schematic cross-sectional views illustrating a combination of a plurality of lenses, a spacer, and a lens barrel.
57 is an enlarged view of a portion of a rib of the seventh lens.
58 is a diagram for explaining a parameter of a lens.

Hereinafter, with reference to the drawings will be described an embodiment of the present invention; However, the spirit of the present invention is not limited to the embodiments presented.

For example, those skilled in the art that understand the spirit of the present invention can easily suggest other embodiments falling within the scope of the present invention through the addition, modification, or deletion of the elements, but the present invention also. It will be included within the scope of.

In the lens configuration diagram below, the thickness, size, and shape of the lens are somewhat exaggerated for explanation, and in particular, the shape of the spherical or aspherical surface shown in the lens configuration is merely an example, and is not limited thereto.

In addition, throughout the specification, that a configuration is in contact with the other configuration means to include not only the case in which these components are 'directly contact', but also the 'indirect contact' between the other configuration.

First, referring to FIG. 55, the imaging optical system 100 according to the exemplary embodiment of the present invention may include a plurality of lenses disposed along the optical axis. In addition, the lens barrel 200 may further include a plurality of lenses. The plurality of lenses may be spaced apart from each other by a predetermined distance along the optical axis.

The imaging optical system 100 according to the exemplary embodiment of the present invention includes seven lenses. Each lens includes an optic and a rib.

The optical unit may be a portion where the optical performance of the lens is exhibited. For example, light reflected from an object (or a subject) may be refracted through the optical unit.

The rib may be in another configuration, for example, a lens barrel or other lens. The ribs extend around the optics and are integrally formed with the optics.

The imaging optical system 100 described herein includes a self-aligning structure.

For example, as illustrated in FIG. 55, the imaging optical system 100 includes a structure in which four lenses 1000, 2000, 3000, and 4000 are aligned with each other by optical coupling.

Here, the first lens 1000 disposed closest to the object side is in contact with the lens barrel 200 to align the optical axes, and the second lens 2000 to the fourth lens 4000 may be disposed at the object side. Optical axes are aligned with the first to third lenses). For example, the first lens 1000 and the second lens 2000, the second lens 2000 and the third lens 3000, the third lens 3000 and the fourth lens 4000 may be combined with each other. have. That is, the ribs of the respective lenses may be coupled to each other so that the optical axes of the respective lenses are aligned with each other.

As another example, as shown in FIG. 56, the imaging optical system 100 includes a structure in which five lenses 1000, 2000, 3000, 4000, and 5000 are aligned with each other by optical coupling.

Here, the first lens 1000 disposed closest to the object side is in contact with the lens barrel 200 to align the optical axis, and the second lens 2000 to the fifth lens 5000 may be disposed at the object side. Optical axes are aligned with the first to fourth lenses). For example, the first lens 1000 and the second lens 2000, the second lens 2000 and the third lens 3000, the third lens 3000 and the fourth lens 4000, the fourth lens ( 4000 and the fifth lens 5000 may be combined with each other. That is, the ribs of each lens may be coupled to each other so that the optical axes of the respective lenses are aligned with each other.

The first lens 1000 refers to a lens closest to an object (or a subject), and the seventh lens 7000 refers to a lens closest to an image sensor.

In addition, in each lens, a first surface means a surface (or an object side surface) facing an object, and a second surface means a surface (or an image side) facing an image sensor. In addition, in the present specification, the numerical values of the radius of curvature, the thickness, the distance, the effective aperture radius, and the like of the lens are all in mm, and the unit of angle is Degree.

Meanwhile, the effective aperture radius refers to the radius of one surface (object side and image side) of each lens through which light actually passes. In other words, the effective radius means the radius of the optical portion of each lens. For example, the effective radius of the object-side surface of the first lens may mean a straight line distance between an end portion where light is incident on the object-side surface of the first lens and the optical axis.

In the description of the shape of each lens, the convex shape of one surface means that the paraxial region portion of the surface is convex, and the concave shape of one surface means that the paraxial region portion of the surface is concave. Therefore, even if one surface of the lens is described as a convex shape, the edge portion of the lens may be concave. Similarly, even if one surface of the lens is described as a concave shape, the edge portion of the lens can be convex.

The paraxial region refers to a very narrow region including the optical axis.

The imaging optical system according to the exemplary embodiment of the present invention includes seven lenses.

For example, the imaging optical system according to the exemplary embodiment of the present invention may include the first lens 1000, the second lens 2000, the third lens 3000, the fourth lens 4000, which are sequentially disposed from the object side. The fifth lens 5000, the sixth lens 6000, and the seventh lens 7000 are included.

In addition, the imaging optical system according to the present invention may further include an image sensor for converting an image of an incident object into an electrical signal and an infrared cut filter (hereinafter referred to as a filter) for blocking infrared rays. The filter is disposed between the image sensor and a lens (eg, a seventh lens) disposed closest to the image sensor.

In addition, the imaging optical system may further include an aperture for adjusting the amount of light. For example, the aperture may be disposed between the first lens 1000 and the second lens 2000 or between the second lens 2000 and the third lens 3000. By arranging the aperture relatively close to the first lens 1000, the overall length of the imaging optical system (eg, TTL) can be reduced.

Spacers may be provided between the lenses adjacent to each other. At least a portion of the rib of each lens may be in contact with the spacer. The spacers can maintain a gap between the lenses and can block unnecessary light.

The spacer may include a first spacer SP1, a second spacer SP2, a third spacer SP3, a fourth spacer SP4, a fifth spacer SP5, and a sixth spacer arranged from the object side toward the image sensor. SP6). In an embodiment, the seventh spacer SP7 may further be included.

The first spacer SP1 is disposed between the first lens 1000 and the second lens 2000, and the second spacer SP2 is disposed between the second lens 2000 and the third lens 3000. The third spacer SP3 is disposed between the third lens 3000 and the fourth lens 4000, and the fourth spacer SP4 is disposed between the fourth lens 4000 and the fifth lens 5000. The fifth spacer SP5 is disposed between the fifth lens 5000 and the sixth lens 6000, and the sixth spacer SP6 is disposed between the sixth lens 6000 and the seventh lens 7000. When the seventh spacer SP7 is included, the seventh spacer SP7 may also be disposed between the sixth lens 6000 and the seventh lens 7000. The thickness of the sixth spacer SP6 in the optical axis direction is greater than the thickness of the seventh spacer SP7 in the optical axis direction.

The first lens may have positive or negative refractive power. In addition, the first lens may have a meniscus shape in which it is convex toward the object side. In detail, the first surface of the first lens may be convex, and the second surface of the first lens may be concave.

At least one of the first and second surfaces of the first lens may be aspherical. For example, both surfaces of the first lens may be aspherical.

The second lens may have positive or negative refractive power. In addition, the second lens may have a meniscus shape in which it is convex toward the object side. In detail, the first surface of the second lens may be convex, and the second surface of the second lens may be concave.

Alternatively, both surfaces of the second lens may be convex. In detail, the first and second surfaces of the second lens may be convex.

At least one of the first and second surfaces of the second lens may be aspherical. For example, both surfaces of the second lens may be aspherical.

The third lens has a positive or negative refractive power. In addition, the third lens may have a meniscus shape in which it is convex toward the object side. In detail, the first surface of the third lens may be convex, and the second surface of the third lens may be concave.

Alternatively, both surfaces of the third lens may be convex. In detail, the first and second surfaces of the third lens may be convex.

Alternatively, the third lens may have a meniscus shape in which it is convex toward the image. In detail, the first surface of the third lens may be concave, and the second surface of the third lens may be convex.

At least one of the first and second surfaces of the third lens may be aspherical. For example, both surfaces of the third lens may be aspherical.

The fourth lens has positive or negative refractive power. In addition, the fourth lens may have a meniscus shape in which it is convex toward the object side. In detail, the first surface of the fourth lens may be convex, and the second surface of the fourth lens may be concave.

Alternatively, both surfaces of the fourth lens may be convex. In detail, the first and second surfaces of the fourth lens may be convex.

Alternatively, the meniscus shape may be upwardly convex. In detail, the first surface of the fourth lens may be concave, and the second surface of the fourth lens may be convex.

At least one of the first and second surfaces of the fourth lens may be aspherical. For example, both surfaces of the fourth lens may be aspherical.

The fifth lens has positive or negative refractive power. In addition, the fifth lens may have a meniscus shape in which it is convex toward the object side. In detail, the first surface of the fifth lens may be convex, and the second surface of the fifth lens may be concave.

Alternatively, the fifth lens may have a meniscus shape in which it is convex toward the image. In detail, the first surface of the fifth lens may be concave, and the second surface of the fifth lens may be convex.

At least one of the first and second surfaces of the fifth lens may be aspherical. For example, both surfaces of the fifth lens may be aspheric.

The sixth lens has positive or negative refractive power. In addition, the sixth lens may have a meniscus shape in which it is convex toward the object side. In detail, the first surface of the sixth lens may be convex, and the second surface of the sixth lens may be concave.

Alternatively, the sixth lens may have a shape in which both surfaces thereof are convex. In detail, the first and second surfaces of the sixth lens may be convex.

Alternatively, the sixth lens may have a meniscus shape in which it is convex toward the image. In detail, the first surface of the sixth lens may be concave, and the second surface of the sixth lens may be convex.

Alternatively, the sixth lens may have a concave shape on both surfaces thereof. In detail, the first and second surfaces of the sixth lens may be concave.

At least one of the first and second surfaces of the sixth lens may be aspherical. For example, both surfaces of the sixth lens may be aspherical.

The seventh lens has positive or negative refractive power. In addition, the seventh lens may have a meniscus shape in which it is convex toward the object side. In detail, the first surface of the seventh lens may be convex, and the second surface of the seventh lens may be concave.

Alternatively, the seventh lens may have a shape in which both surfaces thereof are concave. In detail, the first and second surfaces of the seventh lens may be concave.

At least one of the first and second surfaces of the seventh lens may be aspherical. For example, both surfaces of the seventh lens may be aspherical.

In addition, at least one inflection point is formed on at least one of the first and second surfaces of the seventh lens. For example, the first surface of the seventh lens may be convex in the paraxial region and concave toward the edge. The second surface of the seventh lens may be concave in the paraxial region and convex toward the edge.

Meanwhile, the light reflected from the object (or the subject) is refracted by the first to seventh lenses, but unintentional reflection of light may occur. Unintentional reflection of light is unrelated to image formation and causes flare in the captured image.

The imaging optical system according to an embodiment of the present invention can suppress the occurrence of flare phenomenon even if unintended reflection of light occurs.

For this purpose, as shown in FIG. 57, the rib of the seventh lens 7000 disposed closest to the image sensor may include the surface treatment area EA. The surface treatment area EA may be a surface rougher than another portion of the rib of the seventh lens 7000. The surface treatment area EA may be formed by chemical etching or physical grinding. The surface treatment area EA may scatter the reflected light.

Therefore, even if unintended reflection of light occurs, the reflected light can be prevented from gathering at one point, thereby suppressing the occurrence of flare.

The surface treatment area EA may be formed entirely from the edge of the optic to the end of the rib. However, as shown in FIG. 57, the untreated area NEA including the stepped portions E11, E21, and E22 may not be surface treated or may have roughness (roughness) different from that of the surface treated area EA. The first unprocessed region formed on the first surface of the seventh lens 7000 and the second unprocessed region formed on the second surface of the seventh lens 7000 include regions overlapping when viewed in the optical axis direction. do.

The length G1 of the first non-processed region formed on the first surface of the seventh lens 7000 may be different from the length G2 of the second non-processed region formed on the second surface of the seventh lens 7000. have. For example, G1 may be greater than G2.

G1 has a length including a first stepped part E11, a second stepped part E21, and a third stepped part E22, and G2 includes a second stepped part E21 and a third stepped part E22. It may have a length to include. The distance G4 from the end of the rib to the second stepped portion E21 may be smaller than the distance G3 from the end of the rib to the first stepped portion E11. Similarly, the distance G5 from the end of the rib to the third step E22 may be smaller than the distance G3 from the end of the rib to the first step E11.

The non-processing area NEA and the formation positions of the stepped portions E11, E21, and E22 formed as described above may be advantageous for measuring concentricity of the lens.

All lenses of the imaging optical system according to the exemplary embodiment of the present invention may be made of a plastic material.

In addition, each of the plurality of lenses may have at least one aspherical surface.

That is, at least one of the first and second surfaces of the first to seventh lenses may be aspherical. Here, the aspherical surfaces of the first to seventh lenses are represented by Equation (1).

In Equation 1, c is the curvature (inverse of the radius of curvature) of the lens, K is a conic constant, and Y represents the distance from the optical axis to any point on the aspherical surface of the lens. In addition, the constants A to H mean aspherical constants. And Z (or SAG) represents the distance in the optical axis direction from any point on the aspherical surface of the lens to the vertex of the aspherical surface.

The imaging optical system according to an embodiment of the present invention may satisfy at least one of the following conditional expressions.

[Condition 1] 0.1 <L1w / L7w <0.4

[Condition 2] 0.5 <S6d / f <1.4

[Condition 3] 0.4 <L1TR / L7TR <1.9

[Condition 4] 0.5 <L1234TRavg / L7TR <0.9

[Condition 5] 0.5 <L12345TRavg / L7TR <0.9

L1w is the weight of the first lens, and L7w is the weight of the seventh lens. The unit of weight is mg.

S6d is the inner diameter of the sixth spacer, and f is the total focal length of the imaging optical system.

L1TR is the maximum diameter of the first lens, and L7TR is the maximum diameter of the seventh lens. Maximum diameter means the diameter including the rib of the lens.

L1234TRavg is an average value of the maximum diameters of the first to fourth lenses, and L12345TRavg is an average value of the maximum diameters of the first to fifth lenses.

Condition 1 is a weight ratio of the first lens to the seventh lens, and when conditional expression 1 is satisfied, the optical axis alignment may be facilitated through contact between each lens and contact between the lens and the lens barrel.

Condition 2 is a ratio between the sixth spacer disposed between the sixth and seventh lenses and the overall focal length, and when the condition 2 is satisfied, flare due to unintended reflection of light may be improved.

Condition 3 is a ratio between the maximum diameter of the first lens and the maximum diameter of the seventh lens, and when conditional expression 3 is satisfied, the optical axis alignment may be facilitated through contact between each lens and contact between the lens and the lens barrel.

Condition Equation 4 is a ratio between the average value of the maximum diameters of the first to fourth lenses and the maximum diameter of the seventh lens, and when the conditional expression 4 is satisfied, the aberration correction can be easily performed to improve the resolution.

Condition Equation 5 is a ratio of the average value of the maximum diameters of the first to fifth lenses and the maximum diameter of the seventh lens, and when the conditional expression 5 is satisfied, the aberration correction is easy to improve the resolution.

On the other hand, the imaging optical system according to an embodiment of the present invention may further satisfy at least one of the following conditional expressions.

[Condition 6] 0.1 <L1w / L7w <0.3

[Condition 7] 0.5 <S6d / f <1.2

[Condition 8] 0.4 <L1TR / L7TR <0.7

[Condition 9] 0.5 <L1234TRavg / L7TR <0.75

[Condition 10] 0.5 <L12345TRavg / L7TR <0.76

On the other hand, the imaging optical system according to an embodiment of the present invention may further satisfy at least one of the following conditional expressions.

[Condition 11] 0.01 <R1 / R4 <1.3

[Condition 12] 0.1 <R1 / R5 <0.7

[Condition 13] 0.05 <R1 / R6 <0.9

[Condition 14] 0.2 <R1 / R11 <1.2

[Condition 15] 0.8 <R1 / R14 <1.2

[Condition 16] 0.6 <(R11 + R14) / (2 * R1) <3.0

[Condition 17] 0.4 <D13 / D57 <1.2

Conditional Expression 18 0.1 <(1 / f1 + 1 / f2 + 1 / f3 + 1 / f4 + 1 / f5 + 1 / f6 + 1 / f7) * f <0.8

[Condition 19] 0.1 <(1 / f1 + 1 / f2 + 1 / f3 + 1 / f4 + 1 / f5 + 1 / f6 + 1 / f7) * TTL <1.0

[Condition 20] 0.2 <TD1 / D67 <0.8

[Condition 21] 0.1 <(R11 + R14) / (R5 + R6) <1.0

[Condition 22] SD12 <SD34

[Condition 23] SD56 <SD67

[Condition 24] SD56 <SD34

[Condition 25] 0.6 <TTL / (2 * Img HT) <0.9

[Condition 26] 0.2 <∑SD / ∑TD <0.7

[Condition 27] 0 <min (f1: f3) / max (f4: f7) <0.4

[Condition 28] 0.4 <∑TD / TTL <0.7

[Condition 29] 0.7 <SL / TTL <1.0

[Condition 30] 0.81 <f12 / f123 <0.96

[Condition 31] 0.6 <f12 / f1234 <0.84

[Condition 32] TTL ≤ 6.00

R1 is the radius of curvature of the object-side surface of the first lens, R4 is the radius of curvature of the image-side surface of the second lens, R5 is the radius of curvature of the object-side surface of the third lens, and R6 is of the image side of the third lens. Is the radius of curvature, R11 is the radius of curvature of the object-side surface of the sixth lens, and R14 is the radius of curvature of the image-side surface of the seventh lens.

D13 is the optical axis image distance from the object side surface of the first lens to the image side surface of the third lens, and D57 is the optical axis image distance from the object side surface of the fourth lens to the image side surface of the seventh lens.

f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, f4 is the focal length of the fourth lens, f5 is the focal length of the fifth lens, f6 is the focal length of the sixth lens, and f7 is the focal length of the seventh lens.

TD1 is the thickness on the optical axis of the first lens, and D67 is the distance on the optical axis from the object side surface of the sixth lens to the image side surface of the seventh lens.

SD12 is the distance on the optical axis from the image side surface of the first lens to the object side surface of the second lens, SD34 is the distance on the optical axis from the image side surface of the third lens to the object side surface of the fourth lens, and SD56 is the fifth The distance on the optical axis from the image side surface of the lens to the object side surface of the sixth lens, and SD67 is the distance on the optical axis from the image side surface of the sixth lens to the object side surface of the seventh lens.

TTL is the distance on the optical axis from the object side surface of the first lens to the image pickup surface of the image sensor, and Img HT is 1/2 of the diagonal length of the image pickup surface of the image sensor.

SD is the sum of the air gaps of the plurality of lenses, and TD is the sum of the thickness on the optical axis of each lens. The air gap means the distance on the optical axis between adjacent lenses.

min (f1: f3) is a minimum value among absolute values of focal lengths of the first to third lenses, and max (f4: f7) is a maximum value among absolute values of focal lengths of the fourth to seventh lenses.

SL is the distance on the optical axis from the aperture to the image pickup surface of the image sensor.

f12 is a composite focal length of the first lens and the second lens, f123 is a composite focal length of the first to third lenses, and f1234 is a composite focal length of the first to fourth lenses.

When the conditional expression 11 is satisfied, the effect of correcting the spherical aberration and the astigmatism can be improved, thereby improving the resolution.

When the conditional expression 12 is satisfied, the effect of correcting spherical aberration and astigmatism can be improved, thereby improving resolution.

When the conditional expression 13 is satisfied, the effect of correcting spherical aberration and astigmatism can be improved, thereby improving resolution.

When the conditional expression 14 is satisfied, the effect of correcting spherical aberration can be improved, and flare can be prevented. Accordingly, the resolution can be improved.

When the conditional expression 15 is satisfied, the effect of correcting the spherical aberration and the surface curvature can be improved. Accordingly, the resolution can be improved.

When the conditional expression 16 is satisfied, the correction effect of the spherical aberration and the surface curvature phenomenon can be improved, and the flare phenomenon can be prevented. Accordingly, the resolution can be improved.

When the conditional expression 17 is satisfied, a slim imaging optical system can be implemented.

When the conditional expression 18 is satisfied, mass sensitivity may be improved by improving sensitivity of each lens.

When the conditional expression 20 is satisfied, a slim imaging optical system may be implemented.

When the conditional expression 22 is satisfied, the chromatic aberration correction effect can be improved.

When the conditional expression 25 is satisfied, a slim imaging optical system may be implemented.

When the conditional expression 26 is satisfied, a slim imaging optical system may be realized while improving mass productivity of each lens.

When the conditional expression 27 is satisfied, a slim imaging optical system may be implemented.

When the conditional expression 28 is satisfied, a slim imaging optical system may be realized while improving mass productivity of each lens.

When the conditional expression 29 is satisfied, a slim imaging optical system may be implemented.

When the conditional expression 30 is satisfied, a slim imaging optical system may be implemented.

When the conditional expression 31 is satisfied, a slim imaging optical system may be implemented.

An imaging optical system according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2.

The imaging optical system according to the first embodiment of the present invention includes the first lens 110, the second lens 120, the third lens 130, the fourth lens 140, the fifth lens 150, and the sixth lens. The optical system may include an optical system including the 160 and the seventh lens 170, and may further include a filter 180, an image sensor 190, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 1 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 1.30380276 0.4873118 1.546 56.114 0.90 S2 4.10661787 0.02 0.86 S3 Second lens 3.13219869 0.15 1.669 20.353 0.83 S4 1.99733595 0.1652259 0.76 S5 Third lens 3.1434573 0.2269519 1.546 56.114 0.77 S6 5.17017622 0.2383823 0.80 S7 Fourth lens -18.619397 0.2512803 1.546 56.114 0.85 S8 -13.597043 0.242844 1.00 S9 Fifth lens -3.8728179 0.23 1.658 21.494 1.06 S10 -6.4514212 0.1738361 1.35 S11 Sixth lens 3.37627601 0.3819845 1.658 21.494 1.61 S12 3.69563051 0.2187456 1.82 S13 Seventh lens 1.64903762 0.4758711 1.537 55.711 2.42 S14 1.23703219 0.1960644 2.56 S15 filter Infinity 0.11 1.519 64.197 2.91 S16 Infinity 0.6195021 2.94 S17 Imaging plane Infinity 0.012 3.27

In the first embodiment of the present invention, the first lens 110 has a positive refractive power, the first surface of the first lens 110 is convex in the paraxial region, the second surface of the first lens 110 is paraxial Concave shape in the area.

The second lens 120 has negative refractive power, the first surface of the second lens 120 is convex in the paraxial region, and the second surface of the second lens 120 is concave in the paraxial region.

The third lens 130 has a positive refractive power, the first surface of the third lens 130 is convex in the paraxial region, and the second surface of the third lens 130 is concave in the paraxial region. The aperture stop ST is disposed between the second lens 120 and the third lens 130.

The fourth lens 140 has a positive refractive power, the first surface of the fourth lens 140 is concave in the paraxial region, and the second surface of the fourth lens 140 is convex in the paraxial region.

The fifth lens 150 has negative refractive power, the first surface of the fifth lens 150 is concave in the paraxial region, and the second surface of the fifth lens 150 is convex in the paraxial region.

The sixth lens 160 has a positive refractive power, the first surface of the sixth lens 160 is convex in the paraxial region, and the second surface of the sixth lens 160 is concave in the paraxial region.

The seventh lens 170 has negative refractive power, the first surface of the seventh lens 170 is convex in the paraxial region, and the second surface of the seventh lens 170 is concave in the paraxial region.

In addition, two inflection points are formed on the first surface of the seventh lens 170. For example, the first surface of the seventh lens 170 may be convex in the paraxial region, concave outside the paraxial region, and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 170. For example, the second surface of the seventh lens 170 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first lens 110 to the seventh lens 170 has an aspherical surface value as shown in Table 2 below. For example, the object-side surface and the image-side surface of the first lens 110 to the seventh lens 170 are both aspherical surfaces.

K A B C D E F G H S1 -0.04855 -0.0104 0.079678 -0.44646 1.099882 -1.60116 1.122811 -0.33899 0 S2 -11.0924 -0.12752 0.167469 0.110923 -1.28207 2.595792 -2.35953 0.804002 0 S3 -1.78612 -0.15851 0.372646 -0.41814 0.573916 -0.88442 1.331314 -0.80599 0 S4 0.5857 -0.06147 0.150875 0.049867 -0.07429 -0.56511 2.092798 -1.36903 0 S5 3.760167 -0.10504 0.175441 -1.2896 5.059804 -10.8279 12.59218 -5.43044 0 S6 0.084295 -0.07194 -0.02894 0.170897 -0.94476 3.211016 -4.65595 3.037354 0 S7 5.45E-09 -0.14415 -0.13498 0.106142 -0.23108 0.696801 -0.58859 0.153297 0 S8 -5.2E-09 -0.10523 -0.05764 -0.27895 0.581635 -0.34032 0.074355 -0.00428 0 S9 -0.32032 -0.09812 0.288941 -1.04554 1.187968 -0.44999 -0.09128 0.062806 0 S10 8.754232 -0.15044 0.20833 -0.46969 0.543726 -0.29268 0.072698 -0.00679 0 S11 -50 0.123875 -0.5262 0.671582 -0.54174 0.252604 -0.06038 0.005742 0 S12 -34.5841 0.046016 -0.26854 0.301454 -0.1998 0.076707 -0.01561 0.001299 0 S13 -0.95155 -0.4722 0.187431 -0.00725 -0.01893 0.007221 -0.00124 0.000106 -3.7E-06 S14 -1.03036 -0.43108 0.275378 -0.13928 0.050665 -0.01212 0.001769 -0.00014 4.72E-06

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 2.

An imaging optical system according to a second exemplary embodiment of the present invention will be described with reference to FIGS. 3 and 4.

The imaging optical system according to the second embodiment of the present invention includes a first lens 210, a second lens 220, a third lens 230, a fourth lens 240, a fifth lens 250, and a sixth lens. An optical system including the 260 and the seventh lens 270 may further include a filter 280, an image sensor 290, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 3 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 2.05360683 0.9034685 1.546 56.114 1.57 S2 8.69896228 0.1210039 1.51 S3 Second lens 5.79844164 0.23 1.669 20.353 1.41 S4 3.28223873 0.3719948 1.25 S5 Third lens 18.2422536 0.5019823 1.546 56.114 1.28 S6 -30.831764 0.1291516 1.40 S7 Fourth lens 9.45562649 0.26 1.669 20.353 1.42 S8 6.85294408 0.2841745 1.59 S9 Fifth lens 114.717743 0.3398848 1.669 20.353 1.70 S10 7.75029311 0.2357371 1.96 S11 Sixth lens 3.82957626 0.8015174 1.546 56.114 2.27 S12 -2.3157266 0.5095283 2.53 S13 Seventh lens -2.7230919 0.38 1.546 56.114 3.25 S14 2.76379359 0.1236113 3.50 S15 filter Infinity 0.11 1.519 64.197 3.79 S16 Infinity 0.685957 3.82 S17 Imaging plane Infinity 0.012 4.19

In a second embodiment of the present invention, the first lens 210 has a positive refractive power, the first surface of the first lens 210 is convex in the paraxial region, and the second surface of the first lens 210 is paraxial Concave shape in the area.

The second lens 220 has negative refractive power, the first surface of the second lens 220 is convex in the paraxial region, and the second surface of the second lens 220 is concave in the paraxial region. The aperture stop ST is disposed between the first lens 210 and the second lens 220.

The third lens 230 has a positive refractive power, and the first and second surfaces of the third lens 230 are convex in the paraxial region.

The fourth lens 240 has negative refractive power, the first surface of the fourth lens 240 is convex in the paraxial region, and the second surface of the fourth lens 240 is concave in the paraxial region.

The fifth lens 250 has negative refractive power, the first surface of the fifth lens 250 is convex in the paraxial region, and the second surface of the fifth lens 250 is concave in the paraxial region.

The sixth lens 260 has a positive refractive power, and the first and second surfaces of the sixth lens 260 are convex in the paraxial region.

The seventh lens 270 has negative refractive power, and the first and second surfaces of the seventh lens 270 are concave in the paraxial region.

In addition, one inflection point is formed on the first surface of the seventh lens 270. For example, the first surface of the seventh lens 270 may be concave in the paraxial region and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 270. For example, the second surface of the seventh lens 270 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first lens 210 to the seventh lens 270 has an aspherical surface value as shown in Table 4 below. For example, both the object-side surface and the image-side surface of the first to seventh lenses 210 to 270 are aspherical.

K A B C D E F G H I S1 -1.06281 0.01395 0.00941 -0.01412 0.016751 -0.01213 0.005246 -0.00125 0.000113 0 S2 10.99365 -0.0496 0.043223 -0.02678 0.01076 -0.00422 0.001531 -0.00036 3.39E-05 0 S3 0 0 0 0 0 0 0 0 0 0 S4 -1.57846 -0.06964 0.064533 0.011426 -0.07261 0.078892 -0.04113 0.010258 -0.00062 0 S5 0 -0.02505 0.012832 -0.06832 0.114397 -0.11363 0.062176 -0.01694 0.001754 0 S6 -95 -0.06124 -0.00208 0.018185 -0.0574 0.078131 -0.05827 0.022909 -0.0037 0 S7 0 -0.13045 0.042894 -0.12127 0.185066 -0.15794 0.079696 -0.02253 0.002763 0 S8 0 -0.10238 0.076048 -0.14731 0.180393 -0.13452 0.060052 -0.01498 0.001622 0 S9 0 -0.12987 0.161036 -0.15532 0.106502 -0.05376 0.017897 -0.00352 0.000315 0 S10 3.618339 -0.19523 0.14843 -0.11064 0.069557 -0.03186 0.009112 -0.00141 8.97E-05 0 S11 -19.5338 -0.02618 -0.01422 0.001668 0.00202 -0.00126 0.0003 -2.8E-05 5.96E-07 0 S12 -0.77737 0.093402 -0.07013 0.024503 -0.00579 0.001227 -0.0002 1.83E-05 -6.9E-07 0 S13 -17.9057 -0.104 0.008741 0.01022 -0.0036 0.000564 -4.8E-05 2.21E-06 -4.2E-08 0 S14 -0.59751 -0.10999 0.036578 -0.00899 0.001629 -0.00023 2.28E-05 -1.5E-06 6.25E-08 -1.1E-09

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 4.

An imaging optical system according to a third embodiment of the present invention will be described with reference to FIGS. 5 and 6.

The imaging optical system according to the third exemplary embodiment of the present invention includes a first lens 310, a second lens 320, a third lens 330, a fourth lens 340, a fifth lens 350, and a sixth lens. An optical system including a 360 and a seventh lens 370 may further include a filter 380, an image sensor 390, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 5 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 1.77268075 0.8181175 1.546 56.114 1.38 S2 7.43505234 0.0795954 1.33 S3 Second lens 5.04692927 0.2 1.669 20.353 1.25 S4 2.94768599 0.3757836 1.10 S5 Third lens 12.3815508 0.4065563 1.546 56.114 1.13 S6 25.2118728 0.1314045 1.23 S7 Fourth lens 5.68409727 0.219 1.669 20.353 1.25 S8 4.4061916 0.151293 1.41 S9 Fifth lens 27.7177102 0.3053613 1.644 23.516 1.47 S10 8.05648759 0.219293 1.71 S11 Sixth lens 4.76866792 0.6346891 1.546 56.114 1.93 S12 -1.5557108 0.3548236 2.15 S13 Seventh lens -2.2362248 0.373515 1.546 56.114 2.75 S14 2.35098563 0.1948647 2.96 S15 filter Infinity 0.21 1.519 64.197 3.31 S16 Infinity 0.6004768 3.37 S17 Imaging plane Infinity 0.0152263 3.70

In a third embodiment of the present invention, the first lens 310 has a positive refractive power, the first surface of the first lens 310 is convex in the paraxial region, and the second surface of the first lens 310 is paraxial Concave shape in the area.

The second lens 320 has negative refractive power, the first surface of the second lens 320 is convex in the paraxial region, and the second surface of the second lens 320 is concave in the paraxial region. The aperture stop ST is disposed between the first lens 310 and the second lens 320.

The third lens 330 has a positive refractive power, the first surface of the third lens 330 is convex in the paraxial region, and the second surface of the third lens 330 is concave in the paraxial region.

The fourth lens 340 has negative refractive power, the first surface of the fourth lens 340 is convex in the paraxial region, and the second surface of the fourth lens 340 is concave in the paraxial region.

The fifth lens 350 has negative refractive power, the first surface of the fifth lens 350 is convex in the paraxial region, and the second surface of the fifth lens 350 is concave in the paraxial region.

The sixth lens 360 has a positive refractive power, and the first and second surfaces of the sixth lens 360 are convex in the paraxial region.

The seventh lens 370 has negative refractive power, and the first and second surfaces of the seventh lens 370 are concave in the paraxial region.

In addition, one inflection point is formed on the first surface of the seventh lens 370. For example, the first surface of the seventh lens 370 may be concave in the paraxial region and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 370. For example, the second surface of the seventh lens 370 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first lens 310 to the seventh lens 370 has an aspherical surface value as shown in Table 6.

K A B C D E F G H I S1 -1.0302 0.018188 0.032245 -0.07196 0.112928 -0.10738 0.060719 -0.01872 0.002295 0 S2 9.43023 -0.10102 0.141494 -0.11688 0.038896 0.013478 -0.02044 0.008552 -0.00134 0 S3 0 0 0 0 0 0 0 0 0 0 S4 -0.50537 -0.10697 0.153004 0.009755 -0.29683 0.477095 -0.35748 0.129532 -0.01458 0 S5 0 -0.05254 0.023493 -0.1143 0.214047 -0.26482 0.177126 -0.05517 0.005476 0 S6 -99 -0.11144 0.07916 -0.20212 0.267335 -0.18518 0.019544 0.044285 -0.01687 0 S7 0 -0.20077 0.140611 -0.37803 0.453081 -0.18096 -0.09799 0.111673 -0.02809 0 S8 0 -0.20577 0.304963 -0.59986 0.731946 -0.53515 0.225984 -0.05251 0.005575 0 S9 0 -0.28358 0.467356 -0.47172 0.280955 -0.07421 -0.01626 0.014562 -0.00242 0 S10 2.862598 -0.31693 0.301196 -0.21698 0.125203 -0.05589 0.017401 -0.00325 0.000272 0 S11 -19.5338 -0.07211 -0.00681 0.001046 0.009791 -0.00904 0.002973 -0.00036 8.29E-06 0 S12 -1.13682 0.173265 -0.16996 0.078719 -0.01703 0.000973 0.000343 -7.9E-05 5.3E-06 0 S13 -13.4335 -0.08518 -0.04504 0.056746 -0.02132 0.004215 -0.00048 2.92E-05 -7.6E-07 0 S14 -0.68587 -0.15974 0.072817 -0.02745 0.00783 -0.00164 0.000238 -2.3E-05 1.25E-06 -3E-08

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 6.

An imaging optical system according to a fourth embodiment of the present invention will be described with reference to FIGS. 7 and 8.

The imaging optical system according to the fourth embodiment of the present invention may include a first lens 410, a second lens 420, a third lens 430, a fourth lens 440, a fifth lens 450, and a sixth lens. An optical system including the 460 and the seventh lens 470 may be further included, and may further include a filter 480, an image sensor 490, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 7 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S0 Infinity -0.06 1.300 S1 First lens 1.944433 0.44936 1.546 56.114 1.272 S2 2.977539 0.114456 1.251 S3 Second lens 2.684097 0.57757 1.546 56.114 1.214 S4 -14.8551 0.018539 1.179 S5 Third lens 4.307671 0.185386 1.679 19.236 1.072 S6 2.138972 0.559077 1.015 S7 Fourth lens -1112.32 0.276572 1.679 19.236 1.177 S8 -1112.32 0.195337 1.351 S9 Fifth lens 3.11964 0.284764 1.546 56.114 1.590 S10 3.052659 0.21926 1.857 S11 Sixth lens 3.020575 0.350029 1.679 19.236 1.993 S12 2.4858 0.130575 2.317 S13 Seventh lens 1.44499 0.501569 1.537 53.955 2.663 S14 1.27E + 00 0.243037 2.827 S15 filter Infinity 0.11 1.5187 64.1664 3.105532 S16 Infinity 0.594275 3.136694 S17 Imaging plane Infinity 0.002604 3.408113

In a fourth embodiment of the present invention, the first lens 410 has a positive refractive power, the first surface of the first lens 410 is convex in the paraxial region, and the second surface of the first lens 410 is paraxial Concave shape in the area.

The second lens 420 has a positive refractive power, and the first and second surfaces of the second lens 420 are convex. The aperture stop ST is disposed between the first lens 410 and the second lens 420.

The third lens 430 has negative refractive power, the first surface of the third lens 430 is convex in the paraxial region, and the second surface of the third lens 430 is concave in the paraxial region.

The fourth lens 440 has a positive refractive power, the first surface of the fourth lens 440 is concave in the paraxial region, and the second surface of the fourth lens 440 is convex in the paraxial region.

The fifth lens 450 has a positive refractive power, the first surface of the fifth lens 450 is convex in the paraxial region, and the second surface of the fifth lens 450 is concave in the paraxial region.

The sixth lens 460 has negative refractive power, the first surface of the sixth lens 460 is convex in the paraxial region, and the second surface of the sixth lens 460 is concave in the paraxial region.

The seventh lens 470 has a positive refractive power, the first surface of the seventh lens 470 is convex in the paraxial region, and the second surface of the seventh lens 470 is concave in the paraxial region.

In addition, two inflection points are formed on the first surface of the seventh lens 470. For example, the first surface of the seventh lens 470 may be convex in the paraxial region, concave outside the paraxial region, and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 470. For example, the second surface of the seventh lens 470 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first lens 410 to the seventh lens 470 has an aspherical surface value as shown in Table 8. For example, the object-side surface and the image-side surface of the first lens 410 to the seventh lens 470 are both aspherical surfaces.

K A B C D E F G H J S1 -7.583 0.0888 -0.119 0.0923 -0.0948 0.0482 -0.003 -0.0042 0.0008 0 S2 -20.327 -0.0066 -0.1632 0.1025 0.0438 -0.0722 0.0262 -0.0005 -0.0011 0 S3 -0.2671 -0.0459 -0.0455 -0.027 0.1584 -0.0377 -0.1072 0.0826 -0.0186 0 S4 0 0.0277 -0.1403 0.1228 0.1799 -0.4927 0.4448 -0.186 0.03 0 S5 -4.5253 -0.0875 0.0631 -0.2483 0.8524 -1.3993 1.2015 -0.5193 0.0898 0 S6 0.5431 -0.123 0.1655 -0.2954 0.5449 -0.6999 0.5654 -0.2554 0.0541 0 S7 0 -0.0243 -0.1085 0.1778 -0.2176 0.2407 -0.2382 0.1432 -0.0356 0 S8 0 -0.0162 -0.1425 0.0788 0.0935 -0.1616 0.0885 -0.0169 0 0 S9 -43.017 0.1677 -0.2344 0.1196 -0.0548 0.0387 -0.0269 0.0094 -0.0012 0 S10 -5.2037 -0.0358 0.0999 -0.2203 0.2016 -0.1066 0.0335 -0.0057 0.0004 0 S11 -1.699 0.0343 -0.2737 0.3209 -0.2494 0.1179 -0.0316 0.0045 -0.0003 0 S12 -0.0013 -0.0989 -0.0458 0.0603 -0.0408 0.0165 -0.0038 0.0005 -2E-05 0 S13 -0.8015 -0.5195 0.2893 -0.1079 0.0311 -0.0069 0.0011 -0.0001 7E-06 -2E-07 S14 -1.2781 -0.3766 0.2432 -0.1184 0.0416 -0.01 0.0016 -0.0002 9E-06 -2E-07

In addition, the optical system configured as described above may have aberration characteristics shown in FIG. 8.

9 and 10, an imaging optical system according to a fifth embodiment of the present invention will be described.

The imaging optical system according to the fifth embodiment of the present invention may include a first lens 510, a second lens 520, a third lens 530, a fourth lens 540, a fifth lens 550, and a sixth lens. The optical system may include an optical system including the 560 and the seventh lens 570, and may further include a filter 580, an image sensor 590, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 9 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S0 Infinity -0.05569 1.383 S1 First lens 1.951165 0.448752 1.546 56.114 1.307 S2 3.115162 0.125992 1.253 S3 Second lens 2.868611 0.575289 1.546 56.114 1.214 S4 -12.9825 0.018563 1.180 S5 Third lens 4.506414 0.185629 1.679 19.236 1.074 S6 2.196855 0.519693 1.016 S7 Fourth lens -2108.87 0.279556 1.679 19.236 1.179 S8 -6755.44 0.171507 1.338 S9 Fifth lens 3.113522 0.273438 1.546 56.114 1.528 S10 3.267187 0.241671 1.808 S11 Sixth lens 3.22281 0.364954 1.679 19.236 1.996 S12 2.538835 0.143764 2.320 S13 Seventh lens 1.445077 0.51219 1.537 53.955 2.500 S14 1.27E + 00 0.250094 2.738 S15 filter Infinity 0.11 1.5187 64.1664 2.939872 S16 Infinity 0.592403 2.970893 S17 Imaging plane Infinity 0.005449 3.250775

In a fifth embodiment of the present invention, the first lens 510 has a positive refractive power, the first surface of the first lens 510 is convex in the paraxial region, and the second surface of the first lens 510 is paraxial Concave shape in the area.

The second lens 520 has a positive refractive power, and the first and second surfaces of the second lens 520 are convex. The aperture stop ST is disposed between the first lens 510 and the second lens 520.

The third lens 530 has negative refractive power, the first surface of the third lens 530 is convex in the paraxial region, and the second surface of the third lens 530 is concave in the paraxial region.

The fourth lens 540 has negative refractive power, the first surface of the fourth lens 540 is concave in the paraxial region, and the second surface of the fourth lens 540 is convex in the paraxial region.

The fifth lens 550 has a positive refractive power, the first surface of the fifth lens 550 is convex in the paraxial region, and the second surface of the fifth lens 550 is concave in the paraxial region.

The sixth lens 560 has negative refractive power, the first surface of the sixth lens 560 is convex in the paraxial region, and the second surface of the sixth lens 560 is concave in the paraxial region.

The seventh lens 570 has a positive refractive power, the first surface of the seventh lens 570 is convex in the paraxial region, and the second surface of the seventh lens 570 is concave in the paraxial region.

In addition, two inflection points are formed on the first surface of the seventh lens 570. For example, the first surface of the seventh lens 570 may be convex in the paraxial region, concave outside the paraxial region, and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 570. For example, the second surface of the seventh lens 570 may be concave in the paraxial region and convex toward the edge.

On the other hand, each surface of the first lens 510 to the seventh lens 570 has an aspherical surface value as shown in Table 10. For example, the object-side surface and the image-side surface of the first lens 510 to the seventh lens 570 are both aspherical surfaces.

K A B C D E F G H J S1 -7.5279 0.0857 -0.105 0.0528 -0.0256 -0.0221 0.0379 -0.0166 0.0023 0 S2 -19.893 -0.0142 -0.1337 0.0682 0.0621 -0.0783 0.0306 -0.0031 -0.0006 0 S3 -0.0142 -0.0449 -0.0418 -0.0147 0.1136 0.012 -0.1333 0.0892 -0.0193 0 S4 0 0.0281 -0.189 0.276 -0.0808 -0.2297 0.2908 -0.1382 0.024 0 S5 -6.2325 -0.0763 -0.0054 -0.0795 0.6054 -1.1875 1.107 -0.5047 0.0912 0 S6 0.4782 -0.115 0.1396 -0.2676 0.5637 -0.7991 0.6898 -0.325 0.0682 0 S7 0 -0.0188 -0.0772 0.0717 0.0184 -0.081 0.0225 0.0277 -0.0139 0 S8 0 -0.0127 -0.1356 0.0837 0.0781 -0.1502 0.0847 -0.0163 0 0 S9 -49.08 0.1815 -0.3205 0.2837 -0.2161 0.1317 -0.0595 0.0158 -0.0017 0 S10 -5.4303 -0.0205 0.025 -0.1003 0.1046 -0.0624 0.0222 -0.0043 0.0003 0 S11 -1.136 0.0314 -0.2615 0.3261 -0.2695 0.133 -0.0369 0.0053 -0.0003 0 S12 0.0272 -0.1293 0.0241 5E-05 -0.0123 0.0085 -0.0024 0.0003 -2E-05 0 S13 -0.8 -0.5247 0.2994 -0.1227 0.0414 -0.0108 0.002 -0.0002 2E-05 -4E-07 S14 -1.3207 -0.3666 0.2425 -0.1248 0.0468 -0.0121 0.002 -0.0002 1E-05 -3E-07

In addition, the optical system configured as described above may have aberration characteristics shown in FIG. 10.

An imaging optical system according to a sixth embodiment of the present invention will be described with reference to FIGS. 11 and 12.

The imaging optical system according to the sixth embodiment of the present invention includes a first lens 610, a second lens 620, a third lens 630, a fourth lens 640, a fifth lens 650, and a sixth lens. An optical system including a 660 and a seventh lens 670 may be further included, and may further include a filter 680, an image sensor 690, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 11 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S0 Infinity -0.1 1.545 S1 First lens 2.182354 0.332873 1.546 56.114 1.380 S2 1.943873 0.05 1.369 S3 Second lens 1.685732 0.732159 1.546 56.114 1.335 S4 28.37273 0.05 1.264 S5 Third lens 7.153573 0.22 1.679 19.236 1.185 S6 2.922347 0.426406 1.050 S7 Fourth lens 46.9146 0.312126 1.646 23.528 1.112 S8 17.58601 0.26165 1.268 S9 Fifth lens 2.265526 0.27 1.646 23.528 1.774 S10 2.314346 0.373051 1.839 S11 Sixth lens 8.518581 0.607812 1.546 56.114 2.160 S12 -1.98711 0.378187 2.308 S13 Seventh lens -4.7165 0.36 1.546 56.114 2.780 S14 1.89E + 00 0.145735 2.998 S15 filter Infinity 0.11 1.5187 64.1664 3.352752 S16 Infinity 0.66 3.384589 S17 Imaging plane Infinity 0.01 3.712027

In the sixth embodiment of the present invention, the first lens 610 has negative refractive power, the first surface of the first lens 610 is convex in the paraxial region, and the second surface of the first lens 610 is paraxial Concave shape in the area.

The second lens 620 has a positive refractive power, the first surface of the second lens 620 is convex in the paraxial region, and the second surface of the second lens 620 is concave in the paraxial region. The aperture stop ST is disposed between the first lens 610 and the second lens 620.

The third lens 630 has negative refractive power, the first surface of the third lens 630 is convex in the paraxial region, and the second surface of the third lens 630 is concave in the paraxial region.

The fourth lens 640 has negative refractive power, the first surface of the fourth lens 640 is convex in the paraxial region, and the second surface of the fourth lens 640 is concave in the paraxial region.

The fifth lens 650 has a positive refractive power, the first surface of the fifth lens 650 is convex in the paraxial region, and the second surface of the fifth lens 650 is concave in the paraxial region.

The sixth lens 660 has a positive refractive power, and the first and second surfaces of the sixth lens 660 are convex in the paraxial region.

The seventh lens 670 has negative refractive power, and the first and second surfaces of the seventh lens 670 are concave in the paraxial region.

In addition, one inflection point is formed on the first surface of the seventh lens 670. For example, the first surface of the seventh lens 670 may be concave in the paraxial region and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 670. For example, the second surface of the seventh lens 670 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first lens 610 to seventh lens 670 has an aspherical surface value as shown in Table 12. For example, the object-side surface and the image-side surface of the first lens 610 to seventh lens 670 are both aspherical surfaces.

K A B C D E F G H S1 -3.5715 0.0005 0.0011 -0.0181 0.0025 0.0107 -0.0084 0.0026 -0.0003 S2 -9.1496 -0.0513 -0.0055 0.0116 0.0161 -0.0207 0.0078 -0.001 0 S3 -2.5622 -0.0879 0.1115 -0.1204 0.1625 -0.1325 0.0578 -0.0118 0.0006 S4 -90 -0.078 0.2103 -0.4384 0.6397 -0.6153 0.3736 -0.1288 0.0189 S5 0 -0.1133 0.2975 -0.5447 0.7496 -0.7199 0.4525 -0.1642 0.0257 S6 4.6946 -0.0705 0.1434 -0.2144 0.1998 -0.0956 -0.0142 0.0399 -0.0137 S7 0 -0.0972 0.1221 -0.3303 0.5457 -0.6222 0.4555 -0.1995 0.0405 S8 0 -0.1596 0.2027 -0.3281 0.3412 -0.2472 0.1212 -0.0385 0.0064 S9 -18.27 -0.0564 -0.0069 0.0518 -0.0566 0.0228 -0.0011 -0.0019 0.0004 S10 -15.127 -0.0603 -0.0145 0.0594 -0.0601 0.0318 -0.0096 0.0015 -1E-04 S11 0 0.0027 -0.0398 0.025 -0.0137 0.005 -0.001 1E-04 -4E-06 S12 -1.1693 0.1224 -0.1006 0.0535 -0.0195 0.005 -0.0008 8E-05 -3E-06 S13 -4.4446 -0.097 -0.0137 0.0358 -0.0141 0.0028 -0.0003 2E-05 -5E-07 S14 -8.7431 -0.0906 0.0342 -0.009 0.0017 -0.0002 2E-05 -1E-06 3E-08

In addition, the optical system configured as described above may have aberration characteristics shown in FIG. 12.

An imaging optical system according to a seventh embodiment of the present invention will be described with reference to FIGS. 13 and 14.

The optical system according to the seventh exemplary embodiment may include a first lens 710, a second lens 720, a third lens 730, a fourth lens 740, a fifth lens 750, and a sixth lens. The optical system may include an optical system including the 760 and the seventh lens 770, and may further include a filter 780, an image sensor 790, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 13 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S0 Infinity 0 1.629 S1 First lens 2.103288 0.300965 1.546 56.114 1.380 S2 1.828785 0.05 1.362 S3 Second lens 1.604129 0.748312 1.546 56.114 1.320 S4 21.76312 0.05 1.249 S5 Third lens 6.824657 0.22 1.679 19.236 1.185 S6 2.852069 0.418541 1.050 S7 Fourth lens 36.70533 0.30841 1.646 23.528 1.104 S8 23.6439 0.296196 1.268 S9 Fifth lens 2.423731 0.25 1.646 23.528 1.614 S10 2.468626 0.362929 1.874 S11 Sixth lens 8.604153 0.597419 1.546 56.114 2.160 S12 -1.90679 0.321858 2.300 S13 Seventh lens -3.92912 0.36 1.546 56.114 2.780 S14 1.89E + 00 0.135369 2.984 S15 filter Infinity 0.11 1.5187 64.1664 3.365202 S16 Infinity 0.660765 3.39617 S17 Imaging plane Infinity 0.009235 3.709387

In the seventh embodiment of the present invention, the first lens 710 has negative refractive power, the first surface of the first lens 710 is convex in the paraxial region, and the second surface of the first lens 710 is paraxial Concave shape in the area.

The second lens 720 has a positive refractive power, the first surface of the second lens 720 is convex in the paraxial region, and the second surface of the second lens 720 is concave in the paraxial region. The aperture stop ST is disposed between the first lens 710 and the second lens 720.

The third lens 730 has negative refractive power, the first surface of the third lens 730 is convex in the paraxial region, and the second surface of the third lens 730 is concave in the paraxial region.

The fourth lens 740 has negative refractive power, the first surface of the fourth lens 740 is convex in the paraxial region, and the second surface of the fourth lens 740 is concave in the paraxial region.

The fifth lens 750 has a positive refractive power, the first surface of the fifth lens 750 is convex in the paraxial region, and the second surface of the fifth lens 750 is concave in the paraxial region.

The sixth lens 760 has a positive refractive power, and the first and second surfaces of the sixth lens 760 are convex in the paraxial region.

The seventh lens 770 has negative refractive power, and the first and second surfaces of the seventh lens 770 are concave in the paraxial region.

In addition, one inflection point is formed on the first surface of the seventh lens 770. For example, the first surface of the seventh lens 770 may be concave in the paraxial region and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 770. For example, the second surface of the seventh lens 770 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first lens 710 to the seventh lens 770 has an aspherical surface value as shown in Table 14. For example, the object-side surface and the image-side surface of the first lens 710 to the seventh lens 770 are both aspherical surfaces.

K A B C D E F G H S1 -3.5773 -0.0004 0.0047 -0.0224 0.0032 0.0133 -0.0108 0.0034 -0.0004 S2 -9.0551 -0.045 -0.0042 0.0097 0.0134 -0.0167 0.0059 -0.0008 0 S3 -2.3378 -0.0993 0.1427 -0.1434 0.1477 -0.0828 0.0112 0.0087 -0.003 S4 99.97 -0.0923 0.262 -0.5433 0.7929 -0.7771 0.4878 -0.1745 0.0264 S5 0 -0.1328 0.3622 -0.6631 0.8954 -0.85 0.5347 -0.1961 0.0311 S6 4.6392 -0.08 0.1668 -0.2414 0.2072 -0.0831 -0.0267 0.0433 -0.014 S7 0 -0.1064 0.1429 -0.4185 0.7951 -1.0313 0.8413 -0.3948 0.0819 S8 0 -0.1464 0.1697 -0.3068 0.3901 -0.3663 0.2325 -0.0889 0.0157 S9 -16.976 -0.0598 0.0066 0.0185 -0.0133 -0.0079 0.0105 -0.0041 0.0006 S10 -16.514 -0.0486 -0.0329 0.0697 -0.0576 0.0259 -0.0069 0.001 -7E-05 S11 0 0.0021 -0.0386 0.0152 -0.0049 0.0011 -3E-05 -2E-05 2E-06 S12 -1.0939 0.1344 -0.1168 0.0671 -0.0277 0.0082 -0.0016 0.0002 -7E-06 S13 -6.2725 -0.1233 0.0218 0.0166 -0.0084 0.0018 -0.0002 1E-05 -3E-07 S14 -9.9341 -0.1059 0.0534 -0.0191 0.0046 -0.0008 8E-05 -4E-06 1E-07

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 14.

An imaging optical system according to an eighth embodiment of the present invention will be described with reference to FIGS. 15 and 16.

The imaging optical system according to the eighth embodiment of the present invention may include a first lens 810, a second lens 820, a third lens 830, a fourth lens 840, a fifth lens 850, and a sixth lens. An optical system including the 860 and the seventh lens 870 may further include a filter 880, an image sensor 890, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 15 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S0 Infinity -0.1 1.545 S1 First lens 2.002076 0.290476 1.546 56.114 1.275 S2 1.735025 0.046207 1.265 S3 Second lens 1.510849 0.69189 1.546 56.114 1.234 S4 25.17448 0.050782 1.156 S5 Third lens 6.622812 0.20331 1.679 19.236 1.088 S6 2.690882 0.397038 0.970 S7 Fourth lens 404.2399 0.304853 1.646 23.528 1.031 S8 26.39909 0.238795 1.192 S9 Fifth lens 2.030671 0.231034 1.646 23.528 1.495 S10 2.049104 0.337714 1.721 S11 Sixth lens 9.000096 0.577572 1.546 56.114 1.996 S12 -1.67925 0.339723 2.084 S13 Seventh lens -3.83664 0.33269 1.546 56.114 2.569 S14 1.71E + 00 0.146102 2.784 S15 filter Infinity 0.11 1.5187 64.1664 3.104605 S16 Infinity 0.594025 3.133872 S17 Imaging plane Infinity 0.009272 3.409206

In an eighth embodiment of the present invention, the first lens 810 has negative refractive power, the first surface of the first lens 810 is convex in the paraxial region, and the second surface of the first lens 810 is paraxial Concave shape in the area.

The second lens 820 has a positive refractive power, the first surface of the second lens 820 is convex in the paraxial region, and the second surface of the second lens 820 is concave in the paraxial region. The aperture stop ST is disposed between the first lens 810 and the second lens 820.

The third lens 830 has negative refractive power, the first surface of the third lens 830 is convex in the paraxial region, and the second surface of the third lens 830 is concave in the paraxial region.

The fourth lens 840 has negative refractive power, the first surface of the fourth lens 840 is convex in the paraxial region, and the second surface of the fourth lens 840 is concave in the paraxial region.

The fifth lens 850 has a positive refractive power, the first surface of the fifth lens 850 is convex in the paraxial region, and the second surface of the fifth lens 850 is concave in the paraxial region.

The sixth lens 860 has a positive refractive power, and the first and second surfaces of the sixth lens 860 are convex in the paraxial region.

The seventh lens 870 has negative refractive power, and the first and second surfaces of the seventh lens 870 are concave in the paraxial region.

In addition, one inflection point is formed on the first surface of the seventh lens 770. For example, the first surface of the seventh lens 770 may be concave in the paraxial region and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 770. For example, the second surface of the seventh lens 770 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first lens 810 to seventh lens 870 has an aspherical surface value as shown in Table 16. For example, the object-side surface and the image-side surface of the first lens 810 to seventh lens 870 are both aspherical surfaces.

K A B C D E F G H S1 -3.5658 -0.0001 0.0048 -0.0338 0.0058 0.0258 -0.024 0.0087 -0.0012 S2 -8.9286 -0.0617 -0.0072 0.019 0.0308 -0.0458 0.0196 -0.0029 0 S3 -2.4366 -0.118 0.178 -0.2127 0.3039 -0.2613 0.1138 -0.0182 -0.0012 S4 100 -0.0932 0.2737 -0.6752 1.2227 -1.4655 1.1 -0.4621 0.0813 S5 0 -0.1401 0.3995 -0.8103 1.2941 -1.4787 1.1095 -0.4775 0.0877 S6 4.6754 -0.0913 0.2084 -0.3503 0.3957 -0.2854 0.067 0.0558 -0.0336 S7 0 -0.1191 0.1586 -0.5241 1.0591 -1.4826 1.3333 -0.7155 0.1765 S8 0 -0.2012 0.3026 -0.6033 0.8015 -0.7547 0.4799 -0.1903 0.0367 S9 -18.968 -0.0705 -0.017 0.0854 -0.095 0.0372 0.0031 -0.007 0.0016 S10 -15.615 -0.0761 -0.0114 0.0715 -0.083 0.0509 -0.0182 0.0035 -0.0003 S11 0 -0.0083 -0.0355 0.0253 -0.0245 0.0145 -0.0045 0.0007 -5E-05 S12 -1.1609 0.1552 -0.1513 0.1068 -0.0571 0.0215 -0.005 0.0006 -3E-05 S13 -4.7786 -0.1272 -0.0055 0.0492 -0.0232 0.0053 -0.0007 4E-05 -1E-06 S14 -8.9618 -0.1184 0.0565 -0.0195 0.0048 -0.0009 1E-04 -6E-06 2E-07

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 16.

17 and 18, an imaging optical system according to a ninth embodiment of the present invention will be described.

The optical system according to the ninth embodiment of the present invention may include a first lens 910, a second lens 920, a third lens 930, a fourth lens 940, a fifth lens 950, and a sixth lens. The optical system includes the optical system 960 and the seventh lens 970, and may further include a filter 980, an image sensor 990, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 17 is shown.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 1.732331 0.731243 1.546 56.114 1.250 S2 12.53699 0.070023 1.181 S3 Second lens 5.589296 0.2 1.667 20.353 1.147 S4 2.573966 0.39715 1.100 S5 Third lens 8.065523 0.384736 1.546 56.114 1.128 S6 7.836681 0.192591 1.247 S7 Fourth lens 6.687158 0.244226 1.546 56.114 1.276 S8 30.32847 0.271297 1.374 S9 Fifth lens -3.28742 0.24968 1.667 20.353 1.481 S10 -4.51593 0.138845 1.734 S11 Sixth lens 5.679879 0.519865 1.546 56.114 2.150 S12 -1.89003 0.316634 2.318 S13 Seventh lens -3.93255 0.3 1.546 56.114 2.640 S14 1.741826 0.193709 2.747 S15 filter Infinity 0.11 1.518 64.166 3.146 S16 Infinity 0.77 3.177045639 S17 Imaging plane Infinity 0.01 3.536356437

In a ninth embodiment of the present invention, the first lens 910 has a positive refractive power, the first surface of the first lens 910 is convex in the paraxial region, and the second surface of the first lens 910 is paraxial Concave shape in the area.

The second lens 920 has negative refractive power, the first surface of the second lens 920 is convex in the paraxial region, and the second surface of the second lens 920 is concave in the paraxial region. The aperture stop ST is disposed between the first lens 910 and the second lens 920.

The third lens 930 has negative refractive power, the first surface of the third lens 930 is convex in the paraxial region, and the second surface of the third lens 930 is concave in the paraxial region.

The fourth lens 940 has a positive refractive power, the first surface of the fourth lens 940 is convex in the paraxial region, and the second surface of the fourth lens 940 is concave in the paraxial region.

The fifth lens 950 has negative refractive power, the first surface of the fifth lens 950 is concave in the paraxial region, and the second surface of the fifth lens 950 is convex in the paraxial region.

The sixth lens 960 has a positive refractive power, and the first and second surfaces of the sixth lens 960 are convex in the paraxial region.

The seventh lens 970 has negative refractive power, and the first and second surfaces of the seventh lens 970 are concave in the paraxial region.

In addition, one inflection point is formed on the first surface of the seventh lens 970. For example, the first surface of the seventh lens 970 may be concave in the paraxial region and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 970. For example, the second surface of the seventh lens 970 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first lens 910 to seventh lens 970 has an aspherical surface value as shown in Table 18. For example, both the object-side surface and the image-side surface of the first lens 910 to seventh lens 970 are aspherical surfaces.

K A B C D E F G H I S1 -0.7464 0.01386 0.03443 -0.0749 0.10292 -0.0706 0.01727 0.00423 -0.0023 0 S2 36.6688 -0.0823 0.19496 -0.3067 0.36336 -0.323 0.19024 -0.0632 0.00855 0 S3 -1.3559 -0.1603 0.33047 -0.4059 0.33245 -0.1787 0.06728 -0.0166 0.00178 0 S4 -0.4109 -0.0907 0.14443 0.1155 -0.7969 1.50089 -1.4406 0.72187 -0.147 0 S5 0 -0.0739 0.04629 -0.1203 0.11651 -0.0578 -0.0089 0.02328 -0.0057 0 S6 0 -0.0932 0.00341 0.05212 -0.1827 0.24566 -0.2173 0.11261 -0.0241 0 S7 25.1476 -0.1235 -0.1887 0.37626 -0.554 0.67306 -0.5796 0.27819 -0.0538 0 S8 -99 -9E-05 -0.3274 0.35885 -0.3195 0.34506 -0.2608 0.09954 -0.0144 0 S9 -70.894 0.02055 0.04825 -0.5284 0.75832 -0.4915 0.16359 -0.0271 0.00175 0 S10 2.28319 0.17594 -0.3448 0.22829 -0.0716 0.01095 -0.0007 -4E-06 1.4E-06 0 S11 -99 0.11875 -0.2169 0.16747 -0.0871 0.02755 -0.0049 0.00045 -2E-05 0 S12 -3.3067 0.16436 -0.1849 0.1159 -0.049 0.01383 -0.0024 0.00023 -9E-06 0 S13 -2.4772 -0.1026 -0.0482 0.07401 -0.0308 0.00666 -0.0008 5.5E-05 -2E-06 0 S14 -1.1028 -0.2935 0.20325 -0.1127 0.04574 -0.0129 0.0024 -0.0003 1.8E-05 -5E-07

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 18.

An imaging optical system according to a tenth embodiment of the present invention will be described with reference to FIGS. 19 and 20.

The optical system according to the tenth exemplary embodiment may include a first lens 1010, a second lens 1020, a third lens 1030, a fourth lens 1040, a fifth lens 1050, and a sixth lens. The optical system may include an optical system 1060 and a seventh lens 1070, and may further include a filter 1080, an image sensor 1090, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 19 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 1.782088 0.689797 1.546 56.114 1.275 S2 13.89149 0.079047 1.226 S3 Second lens 6.087772 0.2 1.667 20.353 1.192 S4 2.729115 0.404069 1.100 S5 Third lens 8.069534 0.351255 1.546 56.114 1.157 S6 7.933764 0.173398 1.256 S7 Fourth lens 6.770708 0.253752 1.546 56.114 1.280 S8 59.26755 0.221445 1.370 S9 Fifth lens -3.04667 0.446166 1.667 20.353 1.423 S10 -4.61706 0.092345 1.742 S11 Sixth lens 5.54179 0.885686 1.546 56.114 2.150 S12 -1.81648 0.263902 2.247 S13 Seventh lens -3.72821 0.334926 1.546 56.114 2.609 S14 1.795292 0.214212 2.895 S15 filter Infinity 0.11 1.518 64.166 3.128 S16 Infinity 0.77 3.159505988 S17 Imaging plane Infinity 0.01 3.5352

In a tenth embodiment of the present invention, the first lens 1010 has a positive refractive power, the first surface of the first lens 1010 is convex in the paraxial region, and the second surface of the first lens 1010 is paraxial Concave shape in the area.

The second lens 1020 has negative refractive power, the first surface of the second lens 1020 is convex in the paraxial region, and the second surface of the second lens 1020 is concave in the paraxial region. The aperture stop ST is disposed between the first lens 1010 and the second lens 1020.

The third lens 1030 has negative refractive power, the first surface of the third lens 1030 is convex in the paraxial region, and the second surface of the third lens 1030 is concave in the paraxial region.

The fourth lens 1040 has a positive refractive power, the first surface of the fourth lens 1040 is convex in the paraxial region, and the second surface of the fourth lens 1040 is concave in the paraxial region.

The fifth lens 1050 has negative refractive power, the first surface of the fifth lens 1050 is concave in the paraxial region, and the second surface of the fifth lens 1050 is convex in the paraxial region.

The sixth lens 1060 has a positive refractive power, and the first and second surfaces of the sixth lens 1060 are convex in the paraxial region.

The seventh lens 1070 has negative refractive power, and the first and second surfaces of the seventh lens 1070 are concave in the paraxial region.

In addition, one inflection point is formed on the first surface of the seventh lens 1070. For example, the first surface of the seventh lens 1070 may be concave in the paraxial region and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 1070. For example, the second surface of the seventh lens 1070 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first lens 1010 to seventh lens 1070 has an aspherical surface value as shown in Table 20. For example, the object-side surface and the image-side surface of the first lens 1010 to the seventh lens 1070 are both aspherical surfaces.

K A B C D E F G H I S1 -0.7799 0.01197 0.05018 -0.1139 0.15402 -0.1058 0.0277 0.00415 -0.0027 0 S2 47.9347 -0.0683 0.17293 -0.3083 0.40045 -0.3589 0.19954 -0.0605 0.0074 0 S3 1.68169 -0.1465 0.29389 -0.3639 0.28524 -0.0978 -0.0255 0.03457 -0.0087 0 S4 -0.5294 -0.0931 0.17548 -0.0689 -0.2817 0.70925 -0.7504 0.40105 -0.0855 0 S5 0 -0.0692 0.02762 -0.0586 0.02149 0.04226 -0.0786 0.05249 -0.0116 0 S6 0 -0.0923 0.00494 0.02984 -0.1124 0.16118 -0.1632 0.09263 -0.0206 0 S7 25.6946 -0.1416 -0.0429 -0.049 0.12511 0.02541 -0.2058 0.15568 -0.0361 0 S8 -99 0.00488 -0.296 0.32057 -0.3817 0.48577 -0.3607 0.13074 -0.0181 0 S9 -70.539 -0.0878 0.24262 -0.6812 0.81506 -0.4953 0.1593 -0.0257 0.00163 0 S10 1.48962 0.12295 -0.2057 0.12659 -0.0423 0.00892 -0.0013 0.00012 -5E-06 0 S11 -99 0.113 -0.1689 0.11533 -0.0542 0.01559 -0.0025 0.00021 -7E-06 0 S12 -2.8554 0.10708 -0.1088 0.05801 -0.0206 0.0049 -0.0007 5.7E-05 -2E-06 0 S13 -2.6312 -0.0807 -0.0543 0.06724 -0.0264 0.0055 -0.0007 4.3E-05 -1E-06 0 S14 -1.0845 -0.2364 0.13321 -0.0576 0.0184 -0.0041 0.00062 -6E-05 3.2E-06 -7E-08

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 20.

An imaging optical system according to an eleventh embodiment of the present invention will be described with reference to FIGS. 21 and 22.

The imaging optical system according to the eleventh embodiment of the present invention may include a first lens 1110, a second lens 1120, a third lens 1130, a fourth lens 1140, a fifth lens 1150, and a sixth lens. The optical system may include an optical system including the 1160 and the seventh lens 1170, and may further include a filter 1180, an image sensor 1190, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 21 shows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 1.792301 0.726309 1.546 56.114 1.330 S2 13.20491 0.090736 1.287 S3 Second lens 5.976271 0.2 1.667 20.353 1.219 S4 2.717433 0.392614 1.100 S5 Third lens 7.924964 0.368939 1.546 56.114 1.160 S6 7.783378 0.135415 1.266 S7 Fourth lens 6.732611 0.266976 1.546 56.114 1.283 S8 34.21537 0.221138 1.379 S9 Fifth lens -2.99938 0.446167 1.667 20.353 1.429 S10 -4.33966 0.050671 1.767 S11 Sixth lens 5.602517 0.919146 1.546 56.114 2.150 S12 -1.61634 0.250496 2.124 S13 Seventh lens -3.32028 0.3 1.546 56.114 2.555 S14 1.721575 0.241394 2.854 S15 filter Infinity 0.11 1.518 64.166 3.042 S16 Infinity 0.77 3.076461274 S17 Imaging plane Infinity 0.01 3.539791201

In an eleventh embodiment of the present invention, the first lens 1110 has a positive refractive power, the first surface of the first lens 1110 is convex in the paraxial region, and the second surface of the first lens 1110 is paraxial Concave shape in the area.

The second lens 1120 has negative refractive power, the first surface of the second lens 1120 is convex in the paraxial region, and the second surface of the second lens 1120 is concave in the paraxial region. The aperture stop ST is disposed between the first lens 1110 and the second lens 1120.

The third lens 1130 has negative refractive power, the first surface of the third lens 1130 is convex in the paraxial region, and the second surface of the third lens 1130 is concave in the paraxial region.

The fourth lens 1140 has a positive refractive power, the first surface of the fourth lens 1140 is convex in the paraxial region, and the second surface of the fourth lens 1140 is concave in the paraxial region.

The fifth lens 1150 has negative refractive power, the first surface of the fifth lens 1150 is concave in the paraxial region, and the second surface of the fifth lens 1150 is convex in the paraxial region.

The sixth lens 1160 has a positive refractive power, and the first and second surfaces of the sixth lens 1160 are convex in the paraxial region.

The seventh lens 1170 has negative refractive power, and the first and second surfaces of the seventh lens 1170 are concave in the paraxial region.

In addition, one inflection point is formed on the first surface of the seventh lens 1170. For example, the first surface of the seventh lens 1170 may be concave in the paraxial region and convex toward the edge thereof.

In addition, one inflection point is formed on the second surface of the seventh lens 1170. For example, the second surface of the seventh lens 1170 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first lens 1110 to seventh lens 1170 has an aspherical surface value as shown in Table 22. For example, the object-side surface and the image-side surface of the first lens 1110 to seventh lens 1170 are both aspherical surfaces.

K A B C D E F G H I S1 -0.8043 0.01289 0.03726 -0.0816 0.11409 -0.089 0.03652 -0.0062 -0.0001 0 S2 51.3479 -0.0483 0.05093 0.0719 -0.2927 0.39068 -0.2714 0.0975 -0.0144 0 S3 3.11156 -0.1249 0.178 -0.0145 -0.3397 0.56985 -0.443 0.17445 -0.0279 0 S4 -0.6552 -0.0793 0.09873 0.18501 -0.7911 1.31375 -1.1601 0.5393 -0.1015 0 S5 0 -0.066 0.06134 -0.18 0.24321 -0.2015 0.08626 -0.0114 -0.0009 0 S6 0 -0.0855 -0.0306 0.18152 -0.4356 0.54102 -0.4166 0.18221 -0.0336 0 S7 25.5599 -0.1157 -0.2609 0.66152 -1.0774 1.19203 -0.8541 0.34504 -0.0583 0 S8 -99 0.0276 -0.4662 0.78122 -1.0595 1.08297 -0.6699 0.21615 -0.0277 0 S9 -74.927 -0.0825 0.26638 -0.7895 0.98252 -0.6232 0.21113 -0.0363 0.0025 0 S10 1.48962 0.15316 -0.249 0.16958 -0.0655 0.01574 -0.0024 0.00021 -8E-06 0 S11 -99 0.09288 -0.1748 0.13327 -0.0666 0.02003 -0.0034 0.00029 -1E-05 0 S12 -2.4857 0.11037 -0.1344 0.07896 -0.0304 0.00781 -0.0012 0.00011 -4E-06 0 S13 -2.6312 -0.0289 -0.1097 0.09541 -0.0347 0.00705 -0.0008 5.5E-05 -2E-06 0 S14 -1.0845 -0.2256 0.1217 -0.0516 0.01635 -0.0037 0.00055 -5E-05 2.8E-06 -7E-08

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 22.

An imaging optical system according to a twelfth embodiment of the present invention will be described with reference to FIGS. 23 and 24.

The imaging optical system according to the twelfth embodiment of the present invention includes a first lens 1210, a second lens 1220, a third lens 1230, a fourth lens 1240, a fifth lens 1250, and a sixth lens. The optical system may include an optical system including a 1260 and a seventh lens 1270, and may further include a filter 1280, an image sensor 1290, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 23 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 2.141 0.481 1.546 56.114 1.450 S2 3.251 0.110 1.350 S3 Second lens 3.253 0.542 1.546 56.114 1.285 S4 -15.773 0.025 1.232 S5 Third lens 8.425 0.230 1.679 19.236 1.157 S6 3.514 0.625 1.095 S7 Fourth lens 25.986 0.296 1.679 19.236 1.265 S8 15.894 0.230 1.452 S9 Fifth lens 3.048 0.400 1.546 56.114 1.675 S10 3.616 0.290 2.092 S11 Sixth lens 3.762 0.400 1.679 19.236 2.153 S12 2.792 0.204 2.476 S13 Seventh lens 1.614 0.510 1.537 53.955 2.938 S14 1.326 0.196 3.102 S15 filter Infinity 0.110 1.518 64.197 3.420 S16 Infinity 0.639 3.450 S17 Imaging plane Infinity 0.011 3.730

In a twelfth embodiment of the present invention, the first lens 1210 has positive refractive power, the first surface of the first lens 1210 is convex in the paraxial region, and the second surface of the first lens 1210 is paraxial. Concave shape in the area.

The second lens 1220 has a positive refractive power, and the first and second surfaces of the second lens 1220 are convex in the paraxial region.

The third lens 1230 has negative refractive power, the first surface of the third lens 1230 is convex in the paraxial region, and the second surface of the third lens 1230 is concave in the paraxial region. The aperture stop ST is disposed between the second lens 1220 and the third lens 1230.

The fourth lens 1240 has negative refractive power, the first surface of the fourth lens 1240 is convex in the paraxial region, and the second surface of the fourth lens 1240 is concave in the paraxial region.

The fifth lens 1250 has a positive refractive power, the first surface of the fifth lens 1250 is convex in the paraxial region, and the second surface of the fifth lens 1250 is concave in the paraxial region.

The sixth lens 1260 has negative refractive power, the first surface of the sixth lens 1260 is convex in the paraxial region, and the second surface of the sixth lens 1260 is concave in the paraxial region.

The seventh lens 1270 has negative refractive power, the first surface of the seventh lens 1270 is convex in the paraxial region, and the second surface of the seventh lens 1270 is concave in the paraxial region.

In addition, two inflection points are formed on the first surface of the seventh lens 1270. For example, the first surface of the seventh lens 1270 may be convex in the paraxial region, concave outside the paraxial region, and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 1270. For example, the second surface of the seventh lens 1270 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first to seventh lenses 1210 to 1270 has an aspherical surface value as shown in Table 24. For example, both the object-side surface and the image-side surface of the first to seventh lenses 1210 to 1270 are aspherical.

K A B C D E F G H J S1 -8.038 0.07067 -0.0797 0.03339 0.00722 -0.0491 0.04654 -0.0186 0.00318 -0.0002 S2 -20.594 -0.0019 -0.1494 0.20409 -0.2922 0.37549 -0.3085 0.14861 -0.0387 0.0042 S3 -0.0908 -0.0339 -0.0641 0.13679 -0.2821 0.49215 -0.4815 0.26054 -0.0746 0.00881 S4 -0.4822 -0.0436 0.17605 -0.3256 0.19989 0.1916 -0.4291 0.32034 -0.1141 0.01622 S5 -1.1841 -0.1073 0.25445 -0.4683 0.49912 -0.2863 0.05651 0.03245 -0.0229 0.00442 S6 0.87331 -0.0693 0.03569 0.20478 -0.8833 1.73278 -1.9742 1.34645 -0.5106 0.08302 S7 -0.4999 -0.0314 0.01347 -0.2894 0.97164 -1.7181 1.79234 -1.1152 0.38365 -0.0563 S8 -1E-06 -0.0273 -0.1177 0.21199 -0.2544 0.21565 -0.1264 0.04694 -0.0093 0.0007 S9 -41.843 0.16235 -0.3487 0.40163 -0.3105 0.13962 -0.027 -0.0038 0.00264 -0.0003 S10 -5.1424 0.03971 -0.1364 0.15688 -0.1229 0.06333 -0.0212 0.0044 -0.0005 2.6E-05 S11 -2.1666 0.03558 -0.1809 0.19853 -0.1438 0.06411 -0.0173 0.00275 -0.0002 9E-06 S12 -0.0207 -0.1043 0.02386 -0.0063 -0.0007 0.00066 -3E-06 -4E-05 7.3E-06 -4E-07 S13 -0.7948 -0.4128 0.18634 -0.0516 0.01005 -0.0015 0.00016 -1E-05 6.2E-07 -1E-08 S14 -1.3226 -0.3105 0.17125 -0.0712 0.02129 -0.0043 0.00058 -5E-05 2.3E-06 -5E-08

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 24.

An imaging optical system according to a thirteenth embodiment of the present invention will be described with reference to FIGS. 25 and 26.

The imaging optical system according to the thirteenth embodiment of the present invention includes a first lens 1310, a second lens 1320, a third lens 1330, a fourth lens 1340, a fifth lens 1350, and a sixth lens. An optical system including an optical system 1360 and a seventh lens 1370 may further include a filter 1380, an image sensor 1390, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 25 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 2.073751483 0.544876 1.546 56.114 1.340 S2 3.134870736 0.137569 1.302 S3 Second lens 3.128441404 0.491088 1.546 56.114 1.257 S4 -25.66530563 0.025843 1.217 S5 Third lens 12.4369312 0.23 1.679 19.236 1.160 S6 3.763271555 0.507804 1.182 S7 Fourth lens 10.7268766 0.360036 1.546 56.114 1.275 S8 12.82165572 0.348743 1.388 S9 Fifth lens 4.81387139 0.35 1.546 56.114 1.576 S10 5.615039352 0.232774 2.010 S11 Sixth lens 4.324850125 0.438387 1.679 19.236 2.018 S12 3.02702576 0.173942 2.323 S13 Seventh lens 1.616003022 0.58366 1.546 56.114 2.710 S14 1.373602569 0.214276 2.996 S15 filter Infinity 0.21 1.518 64.197 3.338 S16 Infinity 0.634998 3.403 S17 Imaging plane Infinity 0.015 3.729

In a thirteenth embodiment of the present invention, the first lens 1310 has a positive refractive power, the first surface of the first lens 1310 is convex in the paraxial region, and the second surface of the first lens 1310 is paraxial Concave shape in the area.

The second lens 1320 has a positive refractive power, and the first and second surfaces of the second lens 1320 are convex in the paraxial region.

The third lens 1330 has negative refractive power, the first surface of the third lens 1330 is convex in the paraxial region, and the second surface of the third lens 1330 is concave in the paraxial region. The aperture stop ST is disposed between the second lens 1320 and the third lens 1330.

The fourth lens 1340 has a positive refractive power, the first surface of the fourth lens 1340 is convex in the paraxial region, and the second surface of the fourth lens 1340 is concave in the paraxial region.

The fifth lens 1350 has a positive refractive power, the first surface of the fifth lens 1350 is convex in the paraxial region, and the second surface of the fifth lens 1350 is concave in the paraxial region.

The sixth lens 1360 has negative refractive power, the first surface of the sixth lens 1360 is convex in the paraxial region, and the second surface of the sixth lens 1360 is concave in the paraxial region.

The seventh lens 1370 has negative refractive power, the first surface of the seventh lens 1270 is convex in the paraxial region, and the second surface of the seventh lens 1370 is concave in the paraxial region.

In addition, two inflection points are formed on the first surface of the seventh lens 1370. For example, the first surface of the seventh lens 1370 may be convex in the paraxial region, concave outside the paraxial region, and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 1370. For example, the second surface of the seventh lens 1370 may be concave in the paraxial region and convex toward the edge.

On the other hand, each surface of the first lens 1310 to the seventh lens 1370 has an aspherical surface value as shown in Table 26. For example, the object-side surface and the image-side surface of the first lens 1310 to the seventh lens 1370 are both aspherical surfaces.

K A B C D E F G H J S1 -One -0.0025 -0.0098 0.01527 -0.0556 0.09254 -0.0925 0.05356 -0.0163 0.00201 S2 -12.778 -0.0004 -0.1137 0.24524 -0.5515 0.82945 -0.7417 0.38903 -0.1114 0.01344 S3 -1.5504 -0.0322 -0.0682 0.18501 -0.5146 0.9207 -0.9127 0.51588 -0.1579 0.02023 S4 -7.0537 -0.0404 0.29676 -1.2693 2.88262 -3.9202 3.31284 -1.6974 0.47955 -0.0571 S5 13.4217 -0.1043 0.54877 -2.1153 4.90531 -7.1106 6.4814 -3.6045 1.11764 -0.1481 S6 0.76614 -0.0811 0.31536 -1.241 3.19858 -5.2874 5.51634 -3.5023 1.23595 -0.1856 S7 -8.3969 -0.0517 -0.0407 0.14681 -0.3147 0.35116 -0.1879 0.00842 0.03459 -0.0102 S8 6.05573 -0.0665 -0.0069 0.01518 -0.01 -0.044 0.09308 -0.0777 0.03087 -0.0047 S9 -43.417 0.02293 -0.0192 -0.0479 0.09183 -0.0953 0.05836 -0.0215 0.00436 -0.0004 S10 -1.2708 0.04581 -0.1581 0.19889 -0.1589 0.08059 -0.0262 0.0053 -0.0006 3E-05 S11 -16.611 0.11516 -0.2515 0.23819 -0.1502 0.06085 -0.0155 0.00238 -0.0002 7.4E-06 S12 0.08869 -0.0573 -0.0313 0.03451 -0.02 0.00672 -0.0013 0.00014 -7E-06 7.4E-08 S13 -0.815 -0.3784 0.16737 -0.0506 0.01278 -0.0027 0.00044 -5E-05 2.7E-06 -7E-08 S14 -1.3724 -0.2775 0.15305 -0.0638 0.01949 -0.0041 0.00058 -5E-05 2.6E-06 -6E-08

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 26.

An imaging optical system according to a fourteenth embodiment of the present invention will be described with reference to FIGS. 27 and 28.

The imaging optical system according to the fourteenth embodiment of the present invention includes a first lens 1410, a second lens 1420, a third lens 1430, a fourth lens 1440, a fifth lens 1450, and a sixth lens. The optical system may include an optical system including a 1460 and a seventh lens 1470, and may further include a filter 1480, an image sensor 1490, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 27 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 2.118305139 0.467301 1.546 56.114 1.360 S2 2.746507151 0.088291 1.343 S3 Second lens 2.805315991 0.495083 1.546 56.114 1.313 S4 29.97218136 0.026058 1.266 S5 Third lens 5.620498788 0.273577 1.679 19.236 1.212 S6 2.858933317 0.365293 1.199 S7 Fourth lens 6.085110345 0.415715 1.546 56.114 1.285 S8 19.14383505 0.530007 1.350 S9 Fifth lens 5.783090879 0.4 1.679 19.236 1.600 S10 4.564410244 0.188701 2.100 S11 Sixth lens 2.807723971 0.444625 1.546 56.114 1.903 S12 3.20115397 0.276382 2.470 S13 Seventh lens 1.650083939 0.458527 1.546 56.114 2.646 S14 1.194405383 0.21044 2.806 S15 filter Infinity 0.21 1.518 64.197 3.241 S16 Infinity 0.643292 3.319 S17 Imaging plane Infinity 0.006708 3.729

In a fourteenth embodiment of the present invention, the first lens 1410 has a positive refractive power, the first surface of the first lens 1410 is convex in the paraxial region, and the second surface of the first lens 1410 is paraxial. Concave shape in the area.

The second lens 1420 has a positive refractive power, the first surface of the second lens 1420 is convex in the paraxial region, and the second surface of the second lens 1420 is concave in the paraxial region.

The third lens 1430 has negative refractive power, the first surface of the third lens 1430 is convex in the paraxial region, and the second surface of the third lens 1430 is concave in the paraxial region. The aperture stop ST is disposed between the second lens 1420 and the third lens 1430.

The fourth lens 1440 has a positive refractive power, the first surface of the fourth lens 1440 is convex in the paraxial region, and the second surface of the fourth lens 1440 is concave in the paraxial region.

The fifth lens 1450 has negative refractive power, the first surface of the fifth lens 1450 is convex in the paraxial region, and the second surface of the fifth lens 1450 is concave in the paraxial region.

The sixth lens 1460 has a positive refractive power, the first surface of the sixth lens 1460 is convex in the paraxial region, and the second surface of the sixth lens 1460 is concave in the paraxial region.

The seventh lens 1470 has negative refractive power, the first surface of the seventh lens 1470 is convex in the paraxial region, and the second surface of the seventh lens 1470 is concave in the paraxial region.

In addition, two inflection points are formed on the first surface of the seventh lens 1470. For example, the first surface of the seventh lens 1470 may be convex in the paraxial region, concave outside the paraxial region, and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 1470. For example, the second surface of the seventh lens 1470 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first to seventh lenses 1410 to 1470 has an aspherical surface value as shown in Table 28. For example, the object-side surface and the image-side surface of the first lens 1410 to the seventh lens 1470 are both aspherical surfaces.

K A B C D E F G H J S1 -One -0.0103 0.00782 -0.0588 0.09254 -0.0904 0.0486 -0.0119 0.00038 0.00021 S2 -13.05 0.02575 -0.1274 0.03504 0.06172 -0.0405 0.00034 0.0049 -0.0007 -0.0001 S3 -1.2154 -0.0166 -0.0602 -0.0171 0.06247 0.04814 -0.1007 0.05111 -0.0092 0.00015 S4 -7.0515 -0.047 0.26813 -0.8387 1.45463 -1.5426 1.02637 -0.4201 0.09736 -0.0099 S5 8.8287 -0.0982 0.31064 -0.8268 1.45377 -1.7174 1.3464 -0.6715 0.1944 -0.025 S6 1.72172 -0.0695 0.09394 -0.1196 0.14214 -0.2108 0.2773 -0.2257 0.09968 -0.0182 S7 -1.4309 -0.0448 -0.0056 0.02993 -0.0484 -0.0039 0.08562 -0.1013 0.05106 -0.0095 S8 5.85918 -0.0455 -0.0133 0.03368 -0.0729 0.09223 -0.0766 0.04111 -0.0128 0.00184 S9 -43.521 0.00081 -0.0239 0.02218 -0.0173 0.00514 -0.0002 -0.0003 5.4E-05 4.8E-06 S10 -11.855 -0.0163 -0.0578 0.08324 -0.067 0.0334 -0.0109 0.00227 -0.0003 1.4E-05 S11 -16.199 0.10244 -0.1959 0.19307 -0.1564 0.07971 -0.0243 0.00436 -0.0004 1.8E-05 S12 0.16678 -0.0913 0.11002 -0.1075 0.05366 -0.0157 0.00287 -0.0003 2.1E-05 -6E-07 S13 -0.8022 -0.4375 0.2118 -0.049 0.00155 0.00209 -0.0006 7E-05 -4E-06 1.1E-07 S14 -1.407 -0.3709 0.24995 -0.1268 0.04606 -0.0114 0.00184 -0.0002 1.1E-05 -3E-07

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 28.

29 and 30, an image pickup optical system according to a fifteenth embodiment of the present invention will be described.

The imaging optical system according to the fifteenth embodiment of the present invention includes a first lens 1510, a second lens 1520, a third lens 1530, a fourth lens 1540, a fifth lens 1550, and a sixth lens. The optical system may include an optical system 1560 and a seventh lens 1570, and may further include a filter 1580, an image sensor 1590, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 29 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S0 Infinity 0 1.862 S1 First lens 1.942384 0.793197 1.5441 56.1138 1.444 S2 9.934274 0.1 1.402 S3 Second lens 4.267935 0.2 1.6612 20.3532 1.333 S4 2.440295 0.233353 1.244 S5 Third lens 3.840803 0.337213 1.5441 56.1138 1.192 S6 7.222946 0.29511 1.184 S7 Fourth lens 10.23439 0.319724 1.5441 56.1138 1.207 S8 26.51645 0.281354 1.283 S9 Fifth lens -5.15487 0.401781 1.651 21.4942 1.301 S10 -9.64405 0.147362 1.573 S11 Sixth lens 3.891237 0.810422 1.5441 56.1138 1.674 S12 4.075702 0.213783 2.386 S13 Seventh lens 3.034895 0.604963 1.5348 55.7115 2.823 S14 1.86E + 00 0.14844 3.015 S15 filter Infinity 0.104878 3.181842592 S16 Infinity 0.625122 3.2137538 S17 Imaging plane Infinity 0.02 3.531597426

In a fifteenth embodiment of the present invention, the first lens 1510 has a positive refractive power, the first surface of the first lens 1510 is convex in the paraxial region, and the second surface of the first lens 1510 is paraxial Concave shape in the area.

The second lens 1520 has negative refractive power, the first surface of the second lens 1520 is convex in the paraxial region, and the second surface of the second lens 1520 is concave in the paraxial region. The aperture stop ST is disposed between the first lens 1510 and the second lens 1520.

The third lens 1530 has a positive refractive power, the first surface of the third lens 1530 is convex in the paraxial region, and the second surface of the third lens 1530 is concave in the paraxial region.

The fourth lens 1540 has a positive refractive power, the first surface of the fourth lens 1540 is convex in the paraxial region, and the second surface of the fourth lens 1540 is concave in the paraxial region.

The fifth lens 1550 has negative refractive power, the first surface of the fifth lens 1550 is concave in the paraxial region, and the second surface of the fifth lens 1550 is convex in the paraxial region.

The sixth lens 1560 has a positive refractive power, the first surface of the sixth lens 1560 is convex in the paraxial region, and the second surface of the sixth lens 1560 is concave in the paraxial region.

The seventh lens 1570 has negative refractive power, the first surface of the seventh lens 1570 is convex in the paraxial region, and the second surface of the seventh lens 1570 is concave in the paraxial region.

In addition, two inflection points are formed on the first surface of the seventh lens 1570. For example, the first surface of the seventh lens 1570 may be convex in the paraxial region, concave outside the paraxial region, and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 1570. For example, the second surface of the seventh lens 1570 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first lens 1510 to seventh lens 1570 has an aspherical surface value as shown in Table 30. For example, both the object-side surface and the image-side surface of the first to seventh lenses 1510 to 1570 are aspherical.

K A B C D E F G H S1 0.1119 -0.0077 0.0183 -0.0487 0.065 -0.0521 0.0239 -0.0059 0.0006 S2 -26.097 -0.0447 0.0639 -0.0885 0.0802 -0.0469 0.017 -0.0035 0.0003 S3 -57.375 -0.0493 0.0357 -0.0459 0.0544 -0.0363 0.0155 -0.0043 0.0006 S4 -8.3441 -0.0492 0.0929 -0.1764 0.2477 -0.2307 0.1429 -0.0507 0.0075 S5 1.5878 -0.035 0.0435 -0.1062 0.1611 -0.1672 0.1224 -0.0475 0.0073 S6 -0.0241 -0.0418 -0.0007 0.0745 -0.1984 0.2528 -0.1625 0.0529 -0.0057 S7 -66.305 -0.0937 0.0545 -0.2 0.3691 -0.4471 0.3394 -0.1416 0.0248 S8 19.549 -0.0871 0.0483 -0.1552 0.2353 -0.2493 0.1709 -0.0651 0.0103 S9 7.2773 -0.0493 0.0331 -0.0549 0.0336 -0.0223 0.0129 -0.0036 0 S10 28.608 -0.1159 0.0778 -0.0525 0.0237 -0.0054 0.0001 0.0002 0 S11 -51.379 -0.0153 -0.0854 0.093 -0.0763 0.0386 -0.011 0.0013 0 S12 -31.504 -0.0086 0.0015 -0.0075 0.0041 -0.0012 0.0002 -1E-05 0 S13 -0.4733 -0.2404 0.1187 -0.0378 0.0079 -0.0011 8E-05 -4E-06 7E-08 S14 -0.7879 -0.2013 0.0915 -0.0345 0.009 -0.0015 0.0001 -7E-06 2E-07

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 30.

An imaging optical system according to a sixteenth embodiment of the present invention will be described with reference to FIGS. 31 and 32.

The imaging optical system according to the sixteenth embodiment of the present invention includes the first lens 1610, the second lens 1620, the third lens 1630, the fourth lens 1640, the fifth lens 1650, and the sixth lens. The optical system may include an optical system including a 1660 and a seventh lens 1670, and may further include a filter 1680, an image sensor 1690, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 31 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S0 Infinity 0 1.388 S1 First lens 1.739587 0.598921 1.5441 56.1138 1.100 S2 11.74576 0.1 1.087 S3 Second lens 4.594781 0.22 1.6612 20.3532 1.063 S4 2.200821 0.196896 1.082 S5 Third lens 3.001538 0.333024 1.5441 56.1138 1.036 S6 4.949957 0.220769 1.050 S7 Fourth lens 12.04233 0.308386 1.5441 56.1138 1.051 S8 17.11235 0.265994 1.143 S9 Fifth lens -7.00397 0.297417 1.5441 56.1138 1.199 S10 -7.82081 0.110621 1.343 S11 Sixth lens 2.821263 0.520889 1.5441 56.1138 1.400 S12 3.003035 0.211839 2.055 S13 Seventh lens 2.369754 0.578763 1.5348 55.7115 2.394 S14 1.48E + 00 0.136479 2.614 S15 filter Infinity 0.21 2.875305214 S16 Infinity 0.586088 2.94119348 S17 Imaging plane Infinity 0.003913 3.261482111

In a sixteenth embodiment of the present invention, the first lens 1610 has a positive refractive power, the first surface of the first lens 1610 is convex in the paraxial region, and the second surface of the first lens 1610 is paraxial. Concave shape in the area.

The second lens 1620 has negative refractive power, the first surface of the second lens 1620 is convex in the paraxial region, and the second surface of the second lens 1620 is concave in the paraxial region. The diaphragm ST is disposed between the first lens 1610 and the second lens 1620.

The third lens 1630 has a positive refractive power, the first surface of the third lens 1630 is convex in the paraxial region, and the second surface of the third lens 1630 is concave in the paraxial region.

The fourth lens 1640 has a positive refractive power, the first surface of the fourth lens 1640 is convex in the paraxial region, and the second surface of the fourth lens 1640 is concave in the paraxial region.

The fifth lens 1650 has negative refractive power, the first surface of the fifth lens 1650 is concave in the paraxial region, and the second surface of the fifth lens 1650 is convex in the paraxial region.

The sixth lens 1660 has a positive refractive power, the first surface of the sixth lens 1660 is convex in the paraxial region, and the second surface of the sixth lens 1660 is concave in the paraxial region.

The seventh lens 1670 has negative refractive power, the first surface of the seventh lens 1670 is convex in the paraxial region, and the second surface of the seventh lens 1670 is concave in the paraxial region.

In addition, two inflection points are formed on the first surface of the seventh lens 1670. For example, the first surface of the seventh lens 1670 may be convex in the paraxial region, concave outside the paraxial region, and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 1670. For example, the second surface of the seventh lens 1670 may be concave in the paraxial region and convex toward the edge.

On the other hand, each surface of the first lens 1610 to the seventh lens 1670 has an aspherical surface value as shown in Table 32. For example, both the object-side surface and the image-side surface of the first lens 1610 to seventh lens 1670 are aspherical.

K A B C D E F G H S1 0.1283 -0.0055 0.0045 -0.018 0.0078 0.0301 -0.063 0.046 -0.013 S2 -30.976 -0.0561 0.0444 0.0388 -0.2372 0.4368 -0.4385 0.2311 -0.0505 S3 -55.147 -0.0853 0.0161 0.2247 -0.6095 0.9607 -0.9142 0.4783 -0.1042 S4 -6.2418 -0.0492 0.0165 0.1209 -0.3038 0.4429 -0.3247 0.1012 0.0018 S5 1.4715 -0.0198 0.0181 -0.2874 0.8872 -1.6138 1.7719 -1.012 0.234 S6 -2.9758 -0.0369 0.0559 -0.2665 0.6033 -0.9754 0.967 -0.4745 0.0967 S7 -55.862 -0.1542 0.1102 -0.4806 1.1073 -1.6589 1.3653 -0.5002 0.0586 S8 -87.891 -0.144 0.1419 -0.5705 1.2436 -1.7221 1.4048 -0.6059 0.1078 S9 5.6449 -0.0669 0.1168 -0.4406 0.758 -0.7688 0.403 -0.0844 0 S10 28.194 -0.1694 0.0795 -0.1626 0.3248 -0.3223 0.1516 -0.0266 0 S11 -29.003 0.0237 -0.2637 0.2396 -0.1608 0.0735 -0.0259 0.0049 0 S12 -43.551 0.0645 -0.1366 0.0918 -0.0389 0.0101 -0.0014 8E-05 0 S13 -0.6727 -0.4248 0.2545 -0.086 0.0183 -0.0024 0.0002 -9E-06 2E-07 S14 -0.8377 -0.3391 0.2016 -0.0975 0.0328 -0.0071 0.0009 -6E-05 2E-06

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 32.

33 and 34, an imaging optical system according to a seventeenth exemplary embodiment of the present invention will be described.

The imaging optical system according to the seventeenth exemplary embodiment of the present invention includes a first lens 1710, a second lens 1720, a third lens 1730, a fourth lens 1740, a fifth lens 1750, and a sixth lens. The optical system may include the optical system 1760 and the seventh lens 1770, and may further include a filter 1780, an image sensor 1790, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 33 is shown.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S0 Infinity -0.25 1.073 S1 First lens 1.721083 0.634874 1.5441 56.1138 1.100 S2 11.45706 0.121172 1.071 S3 Second lens 119.1721 0.203286 1.6612 20.3532 1.057 S4 4.475787 0.084345 1.043 S5 Third lens 4.525763 0.310946 1.5441 56.1138 1.051 S6 20.60825 0.215768 1.015 S7 Fourth lens 13.21519 0.236935 1.5441 56.1138 1.019 S8 16.27332 0.210349 1.070 S9 Fifth lens -6.57315 0.41188 1.651 21.4942 1.076 S10 -10.4553 0.371031 1.320 S11 Sixth lens 3.477886 0.631775 1.5441 56.1138 1.556 S12 3.199354 0.267164 2.337 S13 Seventh lens 2.880384 0.505977 1.5441 56.1138 2.489 S14 1.71E + 00 0.138438 2.666 S15 filter Infinity 0.21 3.102058013 S16 Infinity 0.579354 3.177033741 S17 Imaging plane Infinity 0.010646 3.529142415

In the seventeenth embodiment of the present invention, the first lens 1710 has a positive refractive power, the first surface of the first lens 1710 is convex in the paraxial region, and the second surface of the first lens 1710 is paraxial Concave shape in the area.

The second lens 1720 has negative refractive power, the first surface of the second lens 1720 is convex in the paraxial region, and the second surface of the second lens 1720 is concave in the paraxial region. The aperture stop ST is disposed between the first lens 1710 and the second lens 1720.

The third lens 1730 has a positive refractive power, the first surface of the third lens 1730 is convex in the paraxial region, and the second surface of the third lens 1730 is concave in the paraxial region.

The fourth lens 1740 has a positive refractive power, the first surface of the fourth lens 1740 is convex in the paraxial region, and the second surface of the fourth lens 1740 is concave in the paraxial region.

The fifth lens 1750 has negative refractive power, the first surface of the fifth lens 1750 is concave in the paraxial region, and the second surface of the fifth lens 1750 is convex in the paraxial region.

The sixth lens 1760 has negative refractive power, the first surface of the sixth lens 1760 is convex in the paraxial region, and the second surface of the sixth lens 1760 is concave in the paraxial region.

The seventh lens 1770 has negative refractive power, the first surface of the seventh lens 1770 is convex in the paraxial region, and the second surface of the seventh lens 1770 is concave in the paraxial region.

In addition, one inflection point is formed on the first surface of the seventh lens 1770. For example, the first surface of the seventh lens 1770 may be convex in the paraxial region and concave toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 1770. For example, the second surface of the seventh lens 1770 may be concave in the paraxial region and convex toward the edge.

On the other hand, each surface of the first lens 1710 to the seventh lens 1770 has an aspherical surface value as shown in Table 34. For example, both the object-side surface and the image-side surface of the first to seventh lenses 1710 to 1770 are aspherical.

K A B C D E F G H S1 0.0432 -0.0088 0.0131 -0.0627 0.1199 -0.1345 0.077 -0.018 -0.0004 S2 -26.097 -0.0562 0.051 -0.0514 0.0595 -0.0683 0.0462 -0.0139 -7E-05 S3 -99 -0.1283 0.1953 -0.2779 0.5135 -0.8812 0.9662 -0.5723 0.1395 S4 -16.567 -0.0971 0.1552 -0.3608 0.985 -2.059 2.5647 -1.6683 0.4378 S5 -1.6774 -0.0377 0.065 -0.4515 1.687 -3.5163 4.2391 -2.6607 0.6752 S6 57.913 -0.0559 0.0533 -0.341 1.3373 -2.8539 3.4811 -2.2114 0.5781 S7 -66.305 -0.1749 -0.0635 0.0963 -0.2061 0.5819 -0.9 0.6874 -0.1979 S8 19.549 -0.1228 -0.0686 0.0207 0.1647 -0.2695 0.1725 -0.0616 0.0161 S9 29.709 -0.0709 0.0826 -0.3062 0.6009 -0.6459 0.3344 -0.0761 0 S10 -31.338 -0.1255 0.1076 -0.1494 0.1908 -0.1423 0.0506 -0.0065 0 S11 -46.453 0.0038 -0.1455 0.1534 -0.126 0.0705 -0.0225 0.0029 0 S12 -31.504 0.0093 -0.0326 0.0149 -0.0033 0.0003 -1E-05 -7E-07 0 S13 -0.5233 -0.2947 0.1709 -0.0627 0.0154 -0.0025 0.0003 -1E-05 3E-07 S14 -0.8257 -0.2584 0.1353 -0.0565 0.0166 -0.0032 0.0004 -3E-05 7E-07

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 34.

An imaging optical system according to an eighteenth embodiment of the present invention will be described with reference to FIGS. 35 and 36.

An imaging optical system according to an eighteenth embodiment of the present invention may include a first lens 1810, a second lens 1820, a third lens 1830, a fourth lens 1840, a fifth lens 1850, and a sixth lens. 1860 and an optical system including a seventh lens 1870, and may further include a filter 1880, an image sensor 1890, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 35 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S0 Infinity 0 1.709 S1 First lens 1.954768 0.767754 1.5441 56.1138 1.300 S2 7.885948 0.100479 1.209 S3 Second lens 4.828842 0.23659 1.6612 20.3532 1.213 S4 2.866155 0.449288 1.265 S5 Third lens 8.865496 0.484453 1.5441 56.1138 1.268 S6 16.67462 0.275209 1.403 S7 Fourth lens 10.67145 0.369792 1.5441 56.1138 1.456 S8 22.44715 0.280107 1.642 S9 Fifth lens -4.38165 0.271148 1.6612 20.3532 1.769 S10 -4.38283 0.104957 2.019 S11 Sixth lens 7.952227 0.567669 1.5441 56.1138 2.357 S12 -3.03675 0.464825 2.647 S13 Seventh lens -7.50793 0.32 1.5441 56.1138 3.123 S14 1.80E + 00 0.189124 3.381 S15 filter Infinity 0.11 3.605133315 S16 Infinity 0.674935 3.63479604 S17 Imaging plane Infinity -0.01633 3.930447751

In an eighteenth embodiment of the present invention, the first lens 1810 has a positive refractive power, the first surface of the first lens 1810 is convex in the paraxial region, and the second surface of the first lens 1810 is paraxial Concave shape in the area.

The second lens 1820 has negative refractive power, the first surface of the second lens 1820 is convex in the paraxial region, and the second surface of the second lens 1820 is concave in the paraxial region. The aperture stop ST is disposed between the first lens 1810 and the second lens 1820.

The third lens 1830 has a positive refractive power, the first surface of the third lens 1830 is convex in the paraxial region, and the second surface of the third lens 1830 is concave in the paraxial region.

The fourth lens 1840 has a positive refractive power, the first surface of the fourth lens 1840 is convex in the paraxial region, and the second surface of the fourth lens 1840 is concave in the paraxial region.

The fifth lens 1850 has a positive refractive power, the first surface of the fifth lens 1850 is concave in the paraxial region, and the second surface of the fifth lens 1850 is convex in the paraxial region.

The sixth lens 1860 has a positive refractive power, and the first and second surfaces of the sixth lens 1860 are convex in the paraxial region.

The seventh lens 1870 has negative refractive power, and the first and second surfaces of the seventh lens 1870 are concave in the paraxial region.

In addition, one inflection point is formed on the first surface of the seventh lens 1870. For example, the first surface of the seventh lens 1870 may be concave in the paraxial region and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 1870. For example, the second surface of the seventh lens 1870 may be concave in the paraxial region and convex toward the edge thereof.

Meanwhile, each surface of the first lens 1810 to seventh lens 1870 has an aspherical surface value as shown in Table 36. For example, the object-side surface and the image-side surface of the first lens 1810 to the seventh lens 1870 are both aspherical surfaces.

K A B C D E F G H I S1 -0.8127 0.0142 0.0092 -0.0157 0.0206 -0.0137 0.0037 0.0003 -0.0003 0 S2 5.6538 -0.0472 0.0448 -0.0321 0.0158 -0.0059 0.001 0.0004 -0.0002 0 S3 -10.668 -0.0824 0.0792 -0.0266 -0.0158 0.0274 -0.0153 0.0039 -0.0004 0 S4 -0.1737 -0.0508 0.0303 0.1129 -0.3063 0.4131 -0.3101 0.1243 -0.0205 0 S5 0 -0.0377 0.0156 -0.0597 0.0773 -0.0624 0.0268 -0.0045 3E-05 0 S6 0 -0.0706 0.0482 -0.0575 -0.0009 0.0419 -0.0392 0.0166 -0.0028 0 S7 46.114 -0.1374 0.0451 0.0051 -0.0298 0.0052 0.0076 -0.0027 0.0001 0 S8 99 -0.1096 -0.0451 0.1394 -0.1519 0.0948 -0.0333 0.006 -0.0004 0 S9 -99 -0.0865 0.1152 -0.1605 0.1182 -0.0466 0.0099 -0.0011 5E-05 0 S10 -0.2245 0.0593 -0.0542 0.0004 0.0119 -0.0044 0.0007 -5E-05 1E-06 0 S11 -99 0.1031 -0.1094 0.0579 -0.0216 0.005 -0.0007 4E-05 -1E-06 0 S12 -4.7232 0.1521 -0.1221 0.0592 -0.0202 0.0046 -0.0007 5E-05 -2E-06 0 S13 -1.1986 -0.0323 -0.0724 0.0507 -0.0141 0.0021 -0.0002 8E-06 -2E-07 0 S14 -1.2644 -0.1675 0.0662 -0.0204 0.0047 -0.0007 8E-05 -5E-06 2E-07 -2E-09

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 36.

37 and 38, an imaging optical system according to a nineteenth embodiment of the present invention will be described.

The imaging optical system according to the nineteenth embodiment of the present invention may include a first lens 1910, a second lens 1920, a third lens 1930, a fourth lens 1940, a fifth lens 1950, and a sixth lens. The optical system including the 1960 and the seventh lens 1970 may further include a filter 1980, an image sensor 1990, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 37 is shown.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S0 Infinity 0 1.571 S1 First lens 1.777275 0.623828 1.5441 56.1138 1.217 S2 6.456568 0.1 1.158 S3 Second lens 4.41033 0.236253 1.6612 20.3532 1.157 S4 2.658351 0.413785 1.184 S5 Third lens 6.587882 0.464049 1.5441 56.1138 1.177 S6 10.52328 0.17773 1.282 S7 Fourth lens 13.47488 0.362661 1.5441 56.1138 1.306 S8 -20.23 0.232536 1.444 S9 Fifth lens -3.18309 0.2 1.6612 20.3532 1.456 S10 -4.21505 0.1 1.625 S11 Sixth lens 6.764633 0.608917 1.5441 56.1138 2.207 S12 -2.87919 0.421093 2.145 S13 Seventh lens -6.99582 0.32 1.5441 56.1138 2.280 S14 1.69E + 00 0.14847 3.165 S15 filter Infinity 0.11 2.850141022 S16 Infinity 0.700678 2.888122651 S17 Imaging plane Infinity -0.02 3.276451571

In a nineteenth embodiment of the present invention, the first lens 1910 has a positive refractive power, the first surface of the first lens 1910 is convex in the paraxial region, and the second surface of the first lens 1910 is paraxial Concave shape in the area.

The second lens 1920 has negative refractive power, the first surface of the second lens 1920 is convex in the paraxial region, and the second surface of the second lens 1920 is concave in the paraxial region. The aperture stop ST is disposed between the first lens 1910 and the second lens 1920.

The third lens 1930 has a positive refractive power, the first surface of the third lens 1930 is convex in the paraxial region, and the second surface of the third lens 1930 is concave in the paraxial region.

The fourth lens 1940 has a positive refractive power, and the first and second surfaces of the fourth lens 1940 are convex in the paraxial region.

The fifth lens 1950 has negative refractive power, the first surface of the fifth lens 1950 is concave in the paraxial region, and the second surface of the fifth lens 1950 is convex in the paraxial region.

The sixth lens 1960 has a positive refractive power, and the first and second surfaces of the sixth lens 1960 are convex in the paraxial region.

The seventh lens 1970 has negative refractive power, and the first and second surfaces of the seventh lens 1970 are concave in the paraxial region.

In addition, one inflection point is formed on the first surface of the seventh lens 1970. For example, the first surface of the seventh lens 1970 may be concave in the paraxial region and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 1970. For example, the second surface of the seventh lens 1970 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first to seventh lenses 1910 to 1970 has an aspherical surface value as shown in Table 38. For example, the object-side surface and the image-side surface of the first lens 1910 to the seventh lens 1970 are both aspherical surfaces.

K A B C D E F G H I S1 -0.5383 0.0108 0.0209 -0.0477 0.0729 -0.06 0.0243 -0.0027 -0.0007 0 S2 5.8135 -0.0459 0.0189 0.0248 -0.0559 0.0486 -0.026 0.0094 -0.0019 0 S3 -10.011 -0.085 0.066 0.02 -0.0808 0.0756 -0.0332 0.0069 -0.0006 0 S4 -0.1875 -0.0544 0.0068 0.26 -0.6655 0.9329 -0.7519 0.3313 -0.061 0 S5 0 -0.0569 0.0063 -0.0275 -0.0046 0.0401 -0.0485 0.0264 -0.0053 0 S6 0 -0.0775 -0.0976 0.271 -0.5329 0.5567 -0.3323 0.1128 -0.0176 0 S7 47.015 -0.0863 -0.1024 0.2298 -0.2721 0.1091 0.0392 -0.0378 0.0065 0 S8 -99 -0.0603 -0.0348 0.057 -0.0468 0.0241 -0.007 0.001 -6E-05 0 S9 -99 -0.2672 0.6153 -0.9745 0.9138 -0.5236 0.1786 -0.0332 0.0026 0 S10 -0.0701 0.0268 -0.0377 -0.0253 0.035 -0.0133 0.0024 -0.0002 7E-06 0 S11 -97.721 0.1556 -0.2109 0.1424 -0.0678 0.02 -0.0033 0.0003 -1E-05 0 S12 -1.5998 0.2298 -0.1811 0.0905 -0.0342 0.0088 -0.0014 0.0001 -4E-06 0 S13 4.8341 -0.1142 -0.0024 0.0306 -0.013 0.0027 -0.0003 2E-05 -5E-07 0 S14 -1.0993 -0.2618 0.1449 -0.0599 0.0171 -0.0032 0.0004 -3E-05 1E-06 -2E-08

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 38.

39 and 40, an image pickup optical system according to a twentieth embodiment of the present invention will be described.

The optical system according to the twentieth embodiment of the present invention may include a first lens 2010, a second lens 2020, a third lens 2030, a fourth lens 2040, a fifth lens 2050, and a sixth lens. The optical system including the 2060 and the seventh lens 2070 may be further included, and may further include a filter 2080, an image sensor 2090, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 39 is shown.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S0 Infinity 0 1.683 S1 First lens 1.797739 0.640884 1.5441 56.1138 1.270 S2 3.742203 0.119077 1.211 S3 Second lens 3.057321 0.22 1.6612 20.3532 1.190 S4 2.795092 0.393079 1.130 S5 Third lens 10.62153 0.464034 1.5441 56.1138 1.153 S6 9.026562 0.1 1.289 S7 Fourth lens 7.987624 0.36214 1.5441 56.1138 1.328 S8 138.7678 0.233384 1.454 S9 Fifth lens -4.1765 0.219829 1.6612 20.3532 1.518 S10 -4.13945 0.1 1.656 S11 Sixth lens 4.613403 0.608917 1.5441 56.1138 2.000 S12 -3.59211 0.472598 2.038 S13 Seventh lens -7.00157 0.32 1.5441 56.1138 2.049 S14 1.69E + 00 0.110689 2.685 S15 filter Infinity 0.21 2.941536401 S16 Infinity 0.529988 3.008025404 S17 Imaging plane Infinity 0.02 3.291609937

In a twentieth embodiment of the present invention, the first lens 2010 has a positive refractive power, the first surface of the first lens 2010 is convex in the paraxial region, and the second surface of the first lens 2010 is paraxial Concave shape in the area.

The second lens 2020 has negative refractive power, the first surface of the second lens 2020 is convex in the paraxial region, and the second surface of the second lens 2020 is concave in the paraxial region. The aperture stop ST is disposed between the first lens 2010 and the second lens 2020.

The third lens 2030 has negative refractive power, the first surface of the third lens 2030 is convex in the paraxial region, and the second surface of the third lens 2030 is concave in the paraxial region.

The fourth lens 2040 has a positive refractive power, the first surface of the fourth lens 2040 is convex in the paraxial region, and the second surface of the fourth lens 2040 is concave in the paraxial region.

The fifth lens 2050 has a positive refractive power, the first surface of the fifth lens 2050 is concave in the paraxial region, and the second surface of the fifth lens 2050 is convex in the paraxial region.

The sixth lens 2060 has a positive refractive power, and the first and second surfaces of the sixth lens 2060 are convex in the paraxial region.

The seventh lens 2070 has negative refractive power, and the first and second surfaces of the seventh lens 2070 are concave in the paraxial region.

In addition, one inflection point is formed on the second surface of the seventh lens 2070. For example, the second surface of the seventh lens 2070 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first lens 2010 to the seventh lens 2070 has an aspherical surface value as shown in Table 40. For example, the object-side surface and the image-side surface of the first lens 2010 to the seventh lens 2070 are both aspherical surfaces.

K A B C D E F G H I S1 -0.812 0.0136 0.0311 -0.0769 0.1226 -0.1099 0.0531 -0.0116 0.0005 0 S2 -6.6917 -0.0631 0.0174 0.0714 -0.1648 0.1763 -0.1086 0.0376 -0.0059 0 S3 -14.579 -0.0707 0.0068 0.1319 -0.2129 0.173 -0.0715 0.0127 -0.0005 0 S4 -0.188 -0.0614 -0.0138 0.3338 -0.7392 0.9251 -0.6781 0.276 -0.0477 0 S5 0 -0.0572 0.0435 -0.1733 0.2724 -0.2421 0.0931 -0.0042 -0.0038 0 S6 0 -0.1356 -0.0309 0.2183 -0.5547 0.6931 -0.486 0.1856 -0.0304 0 S7 30.023 -0.2107 0.0007 0.1568 -0.2854 0.2586 -0.1154 0.0236 -0.0019 0 S8 -99 -0.1858 -0.0192 0.2616 -0.4111 0.3392 -0.1538 0.0357 -0.0033 0 S9 -98.995 -0.2935 0.5043 -0.5157 0.2657 -0.0658 0.0056 0.0005 -8E-05 0 S10 -0.0701 -0.0775 0.2223 -0.2703 0.1529 -0.0452 0.0073 -0.0006 2E-05 0 S11 -97.878 0.1479 -0.1956 0.1288 -0.0598 0.0172 -0.0028 0.0002 -8E-06 0 S12 1.4166 0.1234 -0.1416 0.087 -0.0341 0.0088 -0.0014 0.0001 -4E-06 0 S13 9.5503 -0.2864 0.1096 0.0149 -0.0214 0.0064 -0.0009 6E-05 -2E-06 0 S14 -1.2786 -0.3076 0.1777 -0.0626 0.0143 -0.0022 0.0002 -1E-05 5E-07 -7E-09

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 40.

An imaging optical system according to a twenty-first embodiment of the present invention will be described with reference to FIGS. 41 and 42.

The optical system according to the twenty-first embodiment of the present invention includes a first lens 2110, a second lens 2120, a third lens 2130, a fourth lens 2140, a fifth lens 2150, and a sixth lens. The optical system includes a 2160 and a seventh lens 2170, and may further include a filter 2180, an image sensor 2190, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 41 is shown.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 1.601328 0.4703 1.55 56.11 1.10 S2 6.723341 0.02 1.07 S3 Second lens 1.565428 0.18945 1.66 20.40 1.00 S4 1.191167 0.385927 0.91 S5 Third lens 3.880104 0.1 1.66 20.40 0.90 S6 3.812373 0.220903 0.93 S7 Fourth lens 8.909025 0.639932 1.55 56.11 1.10 S8 -75.7282 0.331313 1.28 S9 Fifth lens -12.2751 0.14904 1.65 21.49 1.33 S10 -15.1629 0.079448 1.57 S11 Sixth lens 4.140002 0.553938 1.65 21.49 1.60 S12 3.897447 0.243033 2.00 S13 Seventh lens 1.919931 0.511414 1.54 55.71 2.82 S14 1.453313 0.182833 2.58 S15 filter Infinity 0.11 2.89 S16 Infinity 0.517581 2.93 S17 Imaging plane Infinity 0.015 3.26

In a twenty-first embodiment of the present invention, the first lens 2110 has a positive refractive power, the first surface of the first lens 2110 is convex in the paraxial region, and the second surface of the first lens 2110 is paraxial Concave shape in the area.

The second lens 2120 has negative refractive power, the first surface of the second lens 2120 is convex in the paraxial region, and the second surface of the second lens 2120 is concave in the paraxial region.

The third lens 2130 has negative refractive power, the first surface of the third lens 2130 is convex in the paraxial region, and the second surface of the third lens 2130 is concave in the paraxial region. The aperture stop ST is disposed between the second lens 2120 and the third lens 2130.

The fourth lens 2140 has a positive refractive power, and the first and second surfaces of the fourth lens 2140 are convex in the paraxial region.

The fifth lens 2150 has negative refractive power, the first surface of the fifth lens 2150 is concave in the paraxial region, and the second surface of the fifth lens 2150 is convex in the paraxial region.

The sixth lens 2160 has negative refractive power, the first surface of the sixth lens 2160 is convex in the paraxial region, and the second surface of the sixth lens 2160 is concave in the paraxial region.

The seventh lens 2170 has negative refractive power, the first surface of the seventh lens 2170 is convex in the paraxial region, and the second surface of the seventh lens 2170 is concave in the paraxial region.

In addition, one inflection point is formed on the first surface of the seventh lens 2170. For example, the first surface of the seventh lens 2170 may be convex in the paraxial region and concave toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 2170. For example, the second surface of the seventh lens 2170 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first to second lenses 2110 to 7170 has an aspherical surface value as shown in Table 42. For example, both the object-side surface and the image-side surface of the first to second lenses 2110 to 7170 are aspherical.

K A B C D E F G H I S1 -0.1212 0.0104 0.0128 -0.0281 0.0435 -0.0381 0.0173 -0.0033 0 0 S2 29.637 -0.0905 0.3333 -0.7525 0.9665 -0.741 0.3153 -0.0585 0 0 S3 -2.48 -0.117 0.4074 -0.8715 1.1061 -0.8249 0.3423 -0.062 0 0 S4 -0.6581 -0.0925 0.1463 -0.1165 -0.011 0.2266 -0.2114 0.0722 0 0 S5 3.0804 -0.1259 0.1776 -0.2375 0.4049 -0.4425 0.2969 -0.0837 0 0 S6 10.659 -0.1644 0.1692 -0.1502 0.1444 -0.0762 0.0151 -0.0003 0 0 S7 21.918 -0.0617 0.0459 -0.0379 0.0564 -0.0364 0.0097 -0.0009 0 0 S8 25.736 -0.0713 0.0217 -0.0106 0.0072 -0.0023 0.0003 -2E-05 0 0 S9 1.6857 -0.1436 0.2565 -0.4332 0.4184 -0.2461 0.0826 -0.0124 0 0 S10 75.072 -0.1186 0.1217 -0.1545 0.1026 -0.0332 0.005 -0.0003 0 0 S11 -52.836 0.0701 -0.2199 0.2058 -0.1343 0.0526 -0.0106 0.0009 0 0 S12 0 -0.0521 -0.0332 0.0285 -0.0129 0.0028 3E-06 -0.0001 2E-05 -5E-07 S13 -0.9427 -0.3217 0.0977 -0.0029 -0.0058 0.0017 -0.0002 2E-05 -4E-07 0 S14 -1.0048 -0.2798 0.1282 -0.0461 0.0122 -0.0022 0.0002 -1E-05 4E-07 0

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 42.

An optical system according to a twenty-second embodiment of the present invention will be described with reference to FIGS. 43 and 44.

The imaging optical system according to the twenty-second embodiment of the present invention includes a first lens 2210, a second lens 2220, a third lens 2230, a fourth lens 2240, a fifth lens 2250, and a sixth lens. The optical system includes a 2260 and a seventh lens 2270, and may further include a filter 2280, an image sensor 2290, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 43 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 1.618399 0.481078 1.55 56.11 1.11 S2 6.899203 0.02 1.08 S3 Second lens 1.572709 0.21298 1.66 20.40 1.01 S4 1.198393 0.337014 0.91 S5 Third lens 3.880395 0.1 1.66 20.40 0.90 S6 3.81266 0.18744 0.93 S7 Fourth lens 9.071729 0.55292 1.55 56.11 1.08 S8 -55.0996 0.304351 1.24 S9 Fifth lens -12.1837 0.114265 1.65 21.49 1.30 S10 -15.0249 0.060547 1.57 S11 Sixth lens 4.118358 0.587621 1.65 21.49 1.52 S12 3.854992 0.224328 1.90 S13 Seventh lens 1.919931 0.553429 1.54 55.71 2.82 S14 1.453313 0.181552 2.49 S15 filter Infinity 0.11 2.83 S16 Infinity 0.518801 2.87 S17 Imaging plane Infinity 0.015 3.27

In a twenty-second embodiment of the present invention, the first lens 2210 has a positive refractive power, the first surface of the first lens 2210 is convex in the paraxial region, and the second surface of the first lens 2210 is paraxial Concave shape in the area.

The second lens 2220 has negative refractive power, the first surface of the second lens 2220 is convex in the paraxial region, and the second surface of the second lens 2220 is concave in the paraxial region.

The third lens 2230 has negative refractive power, the first surface of the third lens 2230 is convex in the paraxial region, and the second surface of the third lens 2230 is concave in the paraxial region. The aperture stop ST is disposed between the second lens 2220 and the third lens 2230.

The fourth lens 2240 has a positive refractive power, and the first and second surfaces of the fourth lens 2240 are convex in the paraxial region.

The fifth lens 2250 has negative refractive power, the first surface of the fifth lens 2250 is concave in the paraxial region, and the second surface of the fifth lens 2250 is convex in the paraxial region.

The sixth lens 2260 has negative refractive power, the first surface of the sixth lens 2260 is convex in the paraxial region, and the second surface of the sixth lens 2260 is concave in the paraxial region.

The seventh lens 2270 has negative refractive power, the first surface of the seventh lens 2270 is convex in the paraxial region, and the second surface of the seventh lens 2270 is concave in the paraxial region.

In addition, one inflection point is formed on the first surface of the seventh lens 2270. For example, the first surface of the seventh lens 2270 may be convex in the paraxial region and concave toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 2270. For example, the second surface of the seventh lens 2270 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first lens 2210 to the seventh lens 2270 has an aspherical surface value as shown in Table 44. For example, the object-side surface and the image-side surface of the first lens 2210 to the seventh lens 2270 are both aspherical surfaces.

K A B C D E F G H S1 -0.2038 0.0111 0.0146 -0.0331 0.0534 -0.0486 0.023 -0.0046 0 S2 30.534 -0.0868 0.313 -0.693 0.872 -0.655 0.273 -0.0496 0 S3 -2.347 -0.114 0.3865 -0.8113 1.0115 -0.741 0.3021 -0.0538 0 S4 -0.7241 -0.0836 0.1372 -0.1055 -0.0097 0.1953 -0.1778 0.0592 0 S5 3.0804 -0.1259 0.1776 -0.2375 0.4049 -0.4425 0.2969 -0.0837 0 S6 10.659 -0.1644 0.1692 -0.1502 0.1444 -0.0762 0.0151 -0.0003 0 S7 21.918 -0.0617 0.0459 -0.0379 0.0564 -0.0364 0.0097 -0.0009 0 S8 25.736 -0.0713 0.0217 -0.0106 0.0072 -0.0023 0.0003 -2E-05 0 S9 1.6857 -0.1436 0.2565 -0.4332 0.4184 -0.2461 0.0826 -0.0124 0 S10 75.072 -0.1186 0.1217 -0.1545 0.1026 -0.0332 0.005 -0.0003 0 S11 -52.836 0.0701 -0.2199 0.2058 -0.1343 0.0526 -0.0106 0.0009 0 S12 -34.09 0.0153 -0.0851 0.0637 -0.0302 0.0086 -0.0013 8E-05 0 S13 -0.9427 -0.3217 0.0977 -0.0029 -0.0058 0.0017 -0.0002 2E-05 -4E-07 S14 -1.0048 -0.2798 0.1282 -0.0461 0.0122 -0.0022 0.0002 -1E-05 4E-07

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 44.

45 and 46, an imaging optical system according to a twenty-third embodiment of the present invention will be described.

The optical system according to the twenty-third embodiment of the present invention includes a first lens 2310, a second lens 2320, a third lens 2330, a fourth lens 2340, a fifth lens 2350, and a sixth lens. The optical system including the 2360 and the seventh lens 2370 may further include a filter 2380, an image sensor 2390, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 45 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 2.33687036 0.432116 1.546 56.114 1.365 S2 2.85742179 0.025 1.352 S3 Second lens 2.542185152 0.6 1.546 56.114 1.326 S4 36.41699638 0.025 1.254 S5 Third lens 8.193690072 0.23 1.679 19.236 1.217 S6 3.333584263 0.3221813 1.227 S7 Fourth lens 6.342713056 0.57111 1.546 56.114 1.322 S8 11.23703124 0.4048969 1.372 S9 Fifth lens 18.96145717 0.5066546 1.546 56.114 1.590 S10 6.683687757 0.0731741 1.931 S11 Sixth lens 2.354768418 0.6194256 1.546 56.114 2.023 S12 2.565132372 0.1492156 2.456 S13 Seventh lens 1.424653122 0.5400405 1.546 56.114 2.710 S14 1.282185763 0.3444098 2.982 S15 filter Infinity 0.21 1.518 64.197 3.258 S16 Infinity 0.6347077 3.333867296 S17 Imaging plane Infinity 0.015 3.734065733

In a twenty-third embodiment of the present invention, the first lens 2310 has a positive refractive power, the first surface of the first lens 2310 is convex in the paraxial region, and the second surface of the first lens 2310 is paraxial Concave shape in the area.

The second lens 2320 has a positive refractive power, the first surface of the second lens 2320 is convex in the paraxial region, and the second surface of the second lens 2320 is concave in the paraxial region.

The third lens 2330 has negative refractive power, the first surface of the third lens 2330 is convex in the paraxial region, and the second surface of the third lens 2330 is concave in the paraxial region. The aperture stop ST is disposed between the second lens 2320 and the third lens 2330.

The fourth lens 2340 has a positive refractive power, the first surface of the fourth lens 2340 is convex in the paraxial region, and the second surface of the fourth lens 2340 is concave in the paraxial region.

The fifth lens 2350 has negative refractive power, the first surface of the fifth lens 2350 is convex in the paraxial region, and the second surface of the fifth lens 2350 is concave in the paraxial region.

The sixth lens 2360 has a positive refractive power, the first surface of the sixth lens 2360 is convex in the paraxial region, and the second surface of the sixth lens 2360 is concave in the paraxial region.

The seventh lens 2370 has a positive refractive power, the first surface of the seventh lens 2370 is convex in the paraxial region, and the second surface of the seventh lens 2360 is concave in the paraxial region.

In addition, two inflection points are formed on the first surface of the seventh lens 2370. For example, the first surface of the seventh lens 2370 may be convex in the paraxial region, concave outside the paraxial region, and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 2370. For example, the second surface of the seventh lens 2370 may be concave in the paraxial region and convex toward the edge thereof.

Meanwhile, each surface of the first lens 2310 to the seventh lens 2370 has an aspherical surface value as shown in Table 46. For example, the object-side surface and the image-side surface of the first lens 2310 to the seventh lens 2370 are both aspherical surfaces.

K A B C D E F G H J S1 -0.9157 -0.0242 0.04834 -0.0925 0.03855 0.05774 -0.0925 0.05787 -0.0178 0.0022 S2 -12.376 0.06268 -0.1415 -0.3392 0.89911 -0.7358 0.18342 0.07554 -0.0533 0.00878 S3 -0.8319 0.03105 -0.03 -0.6522 1.49233 -1.3976 0.63517 -0.1105 -0.0112 0.00479 S4 -7.367 -0.1852 1.71789 -6.8471 14.8214 -19.261 15.4645 -7.5184 2.03069 -0.2341 S5 12.337 -0.2536 1.74889 -6.6898 14.6458 -19.491 16.0712 -8.0307 2.2327 -0.2657 S6 1.14541 -0.0901 0.21678 -0.6218 1.45024 -2.2709 2.26343 -1.3948 0.48954 -0.0747 S7 -12.034 0.04238 -0.6838 2.52889 -5.5859 7.65595 -6.5535 3.38285 -0.9545 0.11242 S8 5.85918 -0.0168 -0.1532 0.44792 -0.9325 1.23635 -1.0356 0.53063 -0.1517 0.01866 S9 -43.521 0.01961 0.0447 -0.1445 0.17405 -0.1293 0.05892 -0.0164 0.00257 -0.0002 S10 -9.9703 -0.0233 -0.0527 0.08206 -0.0601 0.02462 -0.0062 0.00098 -9E-05 3.5E-06 S11 -16.199 0.13832 -0.3024 0.30558 -0.2185 0.10175 -0.0304 0.00571 -0.0006 2.9E-05 S12 0.01179 -0.0979 0.0662 -0.0617 0.03374 -0.0119 0.00278 -0.0004 3.3E-05 -1E-06 S13 -0.8414 -0.3646 0.15334 -0.0353 0.00329 0.00039 -0.0001 1.6E-05 -8E-07 1.3E-08 S14 -1.4251 -0.2584 0.13506 -0.0538 0.01612 -0.0034 0.00047 -4E-05 1.9E-06 -4E-08

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 46.

47 and 48, an imaging optical system according to a twenty-fourth embodiment of the present invention will be described.

The imaging optical system according to the twenty-fourth embodiment of the present invention includes a first lens 2410, a second lens 2420, a third lens 2430, a fourth lens 2440, a fifth lens 2450, and a sixth lens. The optical system including the 2460 and the seventh lens 2470 may further include a filter 2480, an image sensor 2490, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 47 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 1.749266485 0.7080384 1.546 56.114 1.280 S2 7.762717699 0.025 1.225 S3 Second lens 3.688311274 0.23 1.667 20.353 1.160 S4 2.452435605 0.355115 1.033 S5 Third lens 39.91400184 0.23 1.667 20.353 1.053 S6 22.42331799 0.025 1.090 S7 Fourth lens 6.687663883 0.3582464 1.546 56.114 1.130 S8 17.14258608 0.393231 1.201 S9 Fifth lens 10.0342824 0.3524638 1.656 21.525 1.329 S10 6.555482673 0.2520001 1.664 S11 Sixth lens -324.864371 0.6106713 1.656 21.525 1.841 S12 12.28603941 0.0342286 2.288 S13 Seventh lens 1.951834481 0.8257306 1.536 55.656 2.578 S14 1.756651038 0.2187466 2.963 S15 filter Infinity 0.21 1.518 64.197 3.258 S16 Infinity 0.6349884 3.334462215 S17 Imaging plane Infinity 0.015 3.728830434

In a twenty-fourth embodiment of the present invention, the first lens 2410 has a positive refractive power, the first surface of the first lens 2410 is convex in the paraxial region, and the second surface of the first lens 2410 is paraxial Concave shape in the area.

The second lens 2420 has negative refractive power, the first surface of the second lens 2420 is convex in the paraxial region, and the second surface of the second lens 2420 is concave in the paraxial region.

The third lens 2430 has negative refractive power, the first surface of the third lens 2430 is convex in the paraxial region, and the second surface of the third lens 2430 is concave in the paraxial region. The aperture stop ST is disposed between the second lens 2420 and the third lens 2430.

The fourth lens 2440 has a positive refractive power, the first surface of the fourth lens 2440 is convex in the paraxial region, and the second surface of the fourth lens 2440 is concave in the paraxial region.

The fifth lens 2450 has negative refractive power, the first surface of the fifth lens 2450 is convex in the paraxial region, and the second surface of the fifth lens 2450 is concave in the paraxial region.

The sixth lens 2460 has negative refractive power, and the first and second surfaces of the sixth lens 2460 are concave in the paraxial region.

The seventh lens 2470 has a positive refractive power, the first surface of the seventh lens 2470 is convex in the paraxial region, and the second surface of the seventh lens 2470 is concave in the paraxial region.

In addition, one inflection point is formed on the first surface of the seventh lens 2470. For example, the first surface of the seventh lens 2470 may be convex in the paraxial region and concave toward the edge thereof.

In addition, one inflection point is formed on the second surface of the seventh lens 2470. For example, the second surface of the seventh lens 2470 may be concave in the paraxial region and convex toward the edge.

Meanwhile, each surface of the first lens 2410 to the seventh lens 2470 has an aspherical surface value as shown in Table 48. For example, the object-side surface and the image-side surface of the first lens 2410 to the seventh lens 2470 are both aspherical surfaces.

K A B C D E F G H J S1 -0.2398 5.3E-05 0.02249 -0.0553 0.07912 -0.0725 0.04077 -0.0137 0.00194 0 S2 6.04243 -0.0363 0.03435 0.01444 -0.1124 0.16667 -0.1307 0.05398 -0.0092 0 S3 -1.7137 -0.0472 0.04097 0.02639 -0.116 0.18951 -0.1701 0.08267 -0.0161 0 S4 -0.2358 -0.0167 -0.01 0.05643 -0.0195 -0.1069 0.22786 -0.1897 0.06253 0 S5 -0.0716 -0.0169 -0.0047 -0.1892 0.62952 -1.0256 0.96124 -0.4977 0.11269 0 S6 -1.1573 0.01994 -0.1372 0.14441 -0.0555 0.14079 -0.2746 0.2067 -0.0539 0 S7 -28.459 0.02126 -0.1017 0.06112 0.04565 0.01801 -0.1503 0.1307 -0.0346 0 S8 -2.3038 -0.0386 0.03937 -0.1206 0.2443 -0.4112 0.47457 -0.3301 0.12291 -0.0182 S9 -3.3254 -0.1025 0.04401 -0.1067 0.23796 -0.3262 0.24087 -0.0929 0.01464 0 S10 -25.215 -0.0274 -0.1331 0.19086 -0.1562 0.07712 -0.0231 0.00411 -0.0003 0 S11 23.2017 0.16789 -0.2882 0.24139 -0.1422 0.05329 -0.0119 0.00149 -8E-05 0 S12 -49.948 0.00684 -0.0175 0.00273 0.0001 -0.0001 3.8E-05 -6E-06 3.8E-07 0 S13 -1.9292 -0.2614 0.12601 -0.0405 0.00941 -0.0015 0.00015 -9E-06 2.2E-07 0 S14 -0.8288 -0.1737 0.06522 -0.0206 0.00465 -0.0007 6.3E-05 -3E-06 6.6E-08 0

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 48.

An imaging optical system according to a twenty-fifth embodiment of the present invention will be described with reference to FIGS. 49 and 50.

In the imaging optical system according to the twenty-fifth embodiment, the first lens 2510, the second lens 2520, the third lens 2530, the fourth lens 2540, the fifth lens 2550, and the sixth lens The optical system including the 2560 and the seventh lens 2570 may further include a filter 2580, an image sensor 2590, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, index of Abbe, and effective aperture radius) Table 49 is as follows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 1.76028791 0.6171815 1.546 56.114 1.100 S2 14.12333348 0.025 1.040 S3 Second lens 5.834118934 0.23 1.667 20.353 1.011 S4 3.122671446 0.3733379 0.919 S5 Third lens -49.94173366 0.3798697 1.546 56.114 0.995 S6 -15.18699611 0.1809039 1.096 S7 Fourth lens 23.36800299 0.3031664 1.667 20.353 1.124 S8 12.20982926 0.3354305 1.309 S9 Fifth lens -4.394771982 0.4728905 1.546 56.114 1.471 S10 -1.598299305 0.025 1.698 S11 Sixth lens -6.081499124 0.5446656 1.546 56.114 1.822 S12 -3.014533539 0.2724323 2.192 S13 Seventh lens -6.149442968 0.42237 1.546 56.114 2.462 S14 1.636694252 0.1933361 2.880 S15 filter Infinity 0.21 1.518 64.197 3.223 S16 Infinity 0.6445349 3.300 S17 Imaging plane Infinity 0.0098807 3.728

In a twenty-fifth embodiment of the present invention, the first lens 2510 has positive refractive power, the first surface of the first lens 2510 is convex in the paraxial region, and the second surface of the first lens 2510 is paraxial Concave shape in the area.

The second lens 2520 has negative refractive power, the first surface of the second lens 2520 is convex in the paraxial region, and the second surface of the second lens 2520 is concave in the paraxial region.

The third lens 2530 has a positive refractive power, the first surface of the third lens 2530 is concave in the paraxial region, and the second surface of the third lens 2530 is convex in the paraxial region. The aperture stop ST is disposed between the second lens 2520 and the third lens 2530.

The fourth lens 2540 has negative refractive power, the first surface of the fourth lens 2540 is convex in the paraxial region, and the second surface of the fourth lens 2540 is concave in the paraxial region.

The fifth lens 2550 has a positive refractive power, the first surface of the fifth lens 2550 is concave in the paraxial region, and the second surface of the fifth lens 2550 is convex in the paraxial region.

The sixth lens 2560 has a positive refractive power, the first surface of the sixth lens 2560 is concave in the paraxial region, and the second surface of the sixth lens 2560 is convex in the paraxial region.

The seventh lens 2570 has negative refractive power, and the first and second surfaces of the seventh lens 2570 are concave in the paraxial region.

In addition, one inflection point is formed on the second surface of the seventh lens 2570. For example, the second surface of the seventh lens 2570 may be concave in the paraxial region and convex toward the edge thereof.

On the other hand, each surface of the first lens (2510) to the seventh lens (2570) has an aspherical surface value as shown in Table 50. For example, both the object-side surface and the image-side surface of the first to seventh lenses 2510 to 2570 are aspherical.

K A B C D E F G H J S1 -1.0054 0.02246 0.02216 -0.0696 0.16036 -0.2238 0.18065 -0.0791 0.01412 0 S2 -1.5097 -0.1275 0.3975 -0.6982 0.68012 -0.322 0.02875 0.02904 -0.0076 0 S3 6.02943 -0.163 0.45041 -0.8514 1.05249 -0.8203 0.42351 -0.138 0.0213 0 S4 -0.8846 -0.0449 0.03929 0.15739 -0.6934 1.31707 -1.3069 0.67995 -0.143 0 S5 0 -0.0513 -0.0193 -0.016 0.00429 0.00341 -0.0155 0.03192 -0.0128 0 S6 0 -0.1089 -0.0569 0.35761 -0.9255 1.19468 -0.8604 0.33221 -0.0547 0 S7 -7.5 -0.2139 -0.0107 0.17878 -0.1827 -0.1159 0.3046 -0.1897 0.04049 0 S8 -43.341 -0.1402 -0.061 0.2777 -0.4123 0.3523 -0.1857 0.05641 -0.0071 0 S9 -35.081 -0.0602 0.07357 -0.1046 0.10843 -0.0726 0.02553 -0.0041 0.00022 0 S10 -1.5734 0.16205 -0.2197 0.18955 -0.107 0.03959 -0.0091 0.00113 -6E-05 0 S11 0.51533 0.21373 -0.3167 0.23989 -0.1217 0.03837 -0.0069 0.00066 -3E-05 0 S12 -1.1466 0.19671 -0.2565 0.15417 -0.0532 0.01146 -0.0015 0.00012 -4E-06 0 S13 -0.9056 -0.0077 -0.2094 0.18829 -0.0749 0.01671 -0.0022 0.00015 -5E-06 0 S14 -1.2797 -0.2192 0.10065 -0.0338 0.00878 -0.0018 0.00026 -2E-05 1.3E-06 -3E-08

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 50.

An imaging optical system according to a twenty sixth embodiment of the present invention will be described with reference to FIGS. 51 and 52.

The imaging optical system according to the 26th embodiment of the present invention includes a first lens 2610, a second lens 2620, a third lens 2630, a fourth lens 2640, a fifth lens 2650, and a sixth lens. The optical system includes a 2660 and a seventh lens 2670, and may further include a filter 2680, an image sensor 2690, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 51 shows.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 1.882954913 0.5871918 1.546 56.114 1.050 S2 18.07331507 0.0491976 0.962 S3 Second lens 4.599463678 0.23 1.667 20.353 0.934 S4 2.546377474 0.3929389 0.837 S5 Third lens -21.75460448 0.2744632 1.546 56.114 1.100 S6 -13.51443301 0.0611157 1.106 S7 Fourth lens 25.33486158 0.2655293 1.546 56.114 1.200 S8 25.33602848 0.3710469 1.285 S9 Fifth lens 9.468188048 0.3930453 1.656 21.525 1.500 S10 5.10288098 0.3790363 1.754 S11 Sixth lens 6.416223875 0.888499 1.546 56.114 2.041 S12 6.352062001 0.0460253 2.631 S13 Seventh lens 1.966539749 0.8854198 1.536 55.656 3.050 S14 1.769884599 0.3097825 3.456 S15 filter Infinity 0.21 1.518 64.197 3.768 S16 Infinity 0.6537285 3.829 S17 Imaging plane Infinity -0.003728 4.129

In a twenty sixth embodiment of the present invention, the first lens 2610 has positive refractive power, the first surface of the first lens 2610 is convex in the paraxial region, and the second surface of the first lens 2610 is paraxial Concave shape in the area.

The second lens 2620 has negative refractive power, the first surface of the second lens 2620 is convex in the paraxial region, and the second surface of the second lens 2620 is concave in the paraxial region.

The third lens 2630 has a positive refractive power, the first surface of the third lens 2630 is concave in the paraxial region, and the second surface of the third lens 2630 is convex in the paraxial region. The aperture stop ST is disposed between the second lens 2620 and the third lens 2630.

The fourth lens 2640 has a positive refractive power, the first surface of the fourth lens 2640 is convex in the paraxial region, and the second surface of the fourth lens 2640 is concave in the paraxial region.

The fifth lens 2650 has negative refractive power, the first surface of the fifth lens 2650 is convex in the paraxial region, and the second surface of the fifth lens 2650 is concave in the paraxial region.

The sixth lens 2660 has a positive refractive power, the first surface of the sixth lens 2660 is convex in the paraxial region, and the second surface of the sixth lens 2660 is concave in the paraxial region.

The seventh lens 2670 has a positive refractive power, the first surface of the seventh lens 2670 is convex in the paraxial region, and the second surface of the seventh lens 2670 is concave in the paraxial region.

In addition, two inflection points are formed on the first surface of the seventh lens 2670. For example, the first surface of the seventh lens 2670 may be convex in the paraxial region, concave outside the paraxial region, and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 2670. For example, the second surface of the seventh lens 2670 may be concave in the paraxial region and convex toward the edge.

On the other hand, each surface of the first lens 2610 to the seventh lens 2670 has an aspherical surface value as shown in Table 52. For example, both the object-side surface and the image-side surface of the first to second lenses 2610 to 7670 are aspherical.

K A B C D E F G H J S1 -0.1525 0.00346 0.00541 -0.0238 0.05874 -0.0925 0.08078 -0.0376 0.00687 0 S2 -36.188 -0.0554 0.19103 -0.4954 0.90918 -1.1194 0.84898 -0.3546 0.06168 0 S3 -0.1164 -0.0883 0.22642 -0.5273 0.9947 -1.274 1.01042 -0.4343 0.07596 0 S4 0.3326 -0.0462 0.09702 -0.2316 0.5455 -0.848 0.78539 -0.3759 0.07082 0 S5 51.7577 -0.0119 -0.0911 0.36173 -0.9067 1.38454 -1.3014 0.68351 -0.1493 0 S6 42.1637 0.0924 -0.5269 1.35579 -2.2584 2.50931 -1.8107 0.76109 -0.139 0 S7 -4.7579 0.13357 -0.5938 1.26101 -1.8115 1.7924 -1.1666 0.44267 -0.0728 0 S8 -3.4393 0.04714 -0.1842 0.28859 -0.3575 0.32734 -0.1971 0.06695 -0.0093 0 S9 -8.5449 -0.0502 -0.0588 0.15989 -0.2027 0.13981 -0.0542 0.01046 -0.0007 0 S10 -18.064 -0.044 -0.0734 0.14254 -0.1303 0.06906 -0.0217 0.00378 -0.0003 0 S11 -4.6497 0.06328 -0.1193 0.08822 -0.0426 0.01348 -0.0028 0.00037 -2E-05 0 S12 -50 0.03403 -0.0497 0.02457 -0.0072 0.00126 -0.0001 6.9E-06 -2E-07 0 S13 -2.4291 -0.1201 0.01667 0.00224 -0.0009 0.00011 -6E-06 1.3E-07 8.8E-10 0 S14 -1.0032 -0.1111 0.02485 -0.0032 -0.0001 0.00013 -2E-05 1.9E-06 -8E-08 1.4E-09

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 52.

An imaging optical system according to a twenty-seventh embodiment of the present invention will be described with reference to FIGS. 53 and 54.

The optical system according to the twenty-seventh embodiment of the present invention includes a first lens 2710, a second lens 2720, a third lens 2730, a fourth lens 2740, a fifth lens 2750, and a sixth lens. The optical system includes a 2760 and a seventh lens 2770, and may further include a filter 2780, an image sensor 2790, and an aperture stop ST.

The lens characteristics of each lens (Radius of curvature, lens thickness or distance between lenses, index of refraction, Index, Abbe number, and effective aperture radius) Table 53 is shown.

Cotton number Remarks Radius of curvature Thickness or distance Refractive index Abbe's Effective radius S1 First lens 1.898698558 0.6486367 1.546 56.114 1.260 S2 7.35678597 0.025 1.216 S3 Second lens 3.87893073 0.23 1.667 20.353 1.161 S4 2.762008891 0.3408168 1.053 S5 Third lens -50.1241934 0.2818618 1.546 56.114 1.120 S6 -14.98893663 0.0597334 1.158 S7 Fourth lens 12.04981408 0.269789 1.546 56.114 1.220 S8 12.56574443 0.2918619 1.320 S9 Fifth lens 9.592575983 0.35 1.667 20.353 1.520 S10 5.27478585 0.3343756 1.762 S11 Sixth lens 6.87350249 0.8484117 1.546 56.114 2.052 S12 7.493319886 0.0591105 2.641 S13 Seventh lens 2.033708385 0.8835732 1.536 55.656 3.070 S14 1.843638917 0.3047846 3.425 S15 filter Infinity 0.21 1.518 64.197 3.764 S16 Infinity 0.6441161 3.825 S17 Imaging plane Infinity 0.015 4.134

In a twenty-seventh embodiment of the present invention, the first lens 2710 has a positive refractive power, the first surface of the first lens 2710 is convex in the paraxial region, and the second surface of the first lens 2710 is paraxial. Concave shape in the area.

The second lens 2720 has negative refractive power, the first surface of the second lens 2720 is convex in the paraxial region, and the second surface of the second lens 2720 is concave in the paraxial region.

The third lens 2730 has a positive refractive power, the first surface of the third lens 2730 is concave in the paraxial region, and the second surface of the third lens 2730 is convex in the paraxial region. The aperture stop ST is disposed between the second lens 2720 and the third lens 2730.

The fourth lens 2740 has a positive refractive power, the first surface of the fourth lens 2740 is convex in the paraxial region, and the second surface of the fourth lens 2740 is concave in the paraxial region.

The fifth lens 2750 has negative refractive power, the first surface of the fifth lens 2750 is convex in the paraxial region, and the second surface of the fifth lens 2750 is concave in the paraxial region.

The sixth lens 2760 has a positive refractive power, the first surface of the sixth lens 2760 is convex in the paraxial region, and the second surface of the sixth lens 2760 is concave in the paraxial region.

The seventh lens 2770 has a positive refractive power, the first surface of the seventh lens 2770 is convex in the paraxial region, and the second surface of the seventh lens 2770 is concave in the paraxial region.

In addition, two inflection points are formed on the first surface of the seventh lens 2770. For example, the first surface of the seventh lens 2770 may be convex in the paraxial region, concave outside the paraxial region, and convex toward the edge.

In addition, one inflection point is formed on the second surface of the seventh lens 2770. For example, the second surface of the seventh lens 2770 may be concave in the paraxial region and convex toward the edge.

On the other hand, each surface of the first lens (2710) to the seventh lens (2770) has an aspherical surface value as shown in Table 54. For example, the object-side surface and the image-side surface of the first lens 2710 to the seventh lens 2770 are both aspherical surfaces.

K A B C D E F G H J S1 -0.1061 -0.0082 0.0469 -0.0925 0.08107 -0.0129 -0.032 0.02237 -0.0047 0 S2 -36.188 -0.0502 0.16245 -0.4029 0.69307 -0.7643 0.50209 -0.1789 0.02641 0 S3 0.0036 -0.0795 0.20571 -0.548 1.07416 -1.291 0.90975 -0.3412 0.05201 0 S4 0.40382 -0.0325 0.08844 -0.3009 0.70037 -0.9194 0.67381 -0.2424 0.03077 0 S5 51.7577 0.00548 -0.1746 0.50176 -0.9395 1.14417 -0.9144 0.4407 -0.0937 0 S6 42.1637 0.09529 -0.4992 1.03966 -1.2284 0.81694 -0.2802 0.03842 4E-06 0 S7 -4.7579 0.1185 -0.4938 0.85535 -0.8643 0.51674 -0.185 0.04168 -0.0054 0 S8 -3.4393 0.04916 -0.194 0.31472 -0.3773 0.32494 -0.1878 0.06297 -0.0088 0 S9 -8.5449 -0.0638 0.02895 -0.0884 0.16492 -0.171 0.09832 -0.0306 0.00409 0 S10 -18.064 -0.0543 -0.0172 0.03209 -0.0179 0.00397 4.6E-06 -0.0001 7.7E-06 0 S11 -4.6497 0.05354 -0.0909 0.06134 -0.0311 0.01102 -0.0026 0.00036 -2E-05 0 S12 -50 0.01031 -0.0176 0.00573 -0.0015 0.0003 -4E-05 2.4E-06 -6E-08 0 S13 -2.606 -0.1177 0.01922 -0.0004 -1E-04 -1E-05 4.5E-06 -4E-07 9.4E-09 0 S14 -1.0102 -0.0979 0.01866 -0.0024 0.00013 2.1E-05 -6E-06 5.9E-07 -3E-08 5.6E-10

In addition, the imaging optical system configured as described above may have aberration characteristics shown in FIG. 54.

Example f TTL SL Fno Img HT FOV One 3.685 4.200 3.543 2.04 3.261 81.60 2 4.848 6.000 5.097 1.54 4.000 77.80 3 4.315 5.290 4.472 1.56 3.552 77.30 4 3.970 4.812 3.652 1.59 3.400 79.54 5 3.950 4.819 3.650 1.58 3.250 77.47 6 4.350 5.300 4.917 1.58 3.384 79.58 7 4.300 5.200 4.849 1.58 3.700 80.13 8 4.020 4.901 4.565 1.58 3.400 79.28 9 4.280 5.100 4.369 1.71 3.535 77.84 10 4.423 5.500 4.810 1.73 3.535 76.14 11 4.381 5.500 4.774 1.65 3.535 76.54 12 4.401 5.300 4.142 1.69 3.728 79.31 13 4.536 5.499 4.300 1.69 3.728 77.56 14 4.544 5.500 4.423 1.67 3.728 77.54 15 4.751 5.637 4.544 1.64 3.528 72.12 16 4.105 4.900 3.981 1.87 3.261 75.03 17 4.447 5.144 4.894 2.07 3.528 75.63 18 4.700 5.650 4.882 1.81 3.928 78.82 19 4.400 5.200 4.576 1.81 3.261 72.55 20 3.994 5.125 4.484 1.57 3.261 77.38 21 3.900 4.720 3.650 1.77 3.261 78.69 22 3.750 4.560 3.510 1.68 3.261 80.29 23 4.451 5.703 4.621 1.63 3.728 78.60 24 4.592 5.478 4.515 1.79 3.728 76.90 25 4.302 5.240 4.368 1.95 3.728 80.46 26 4.966 5.993 5.127 2.36 4.128 78.45 27 4.667 5.797 4.893 1.85 4.128 81.80

In Table 55, f is the total focal length of the imaging optical system, TTL is the distance on the optical axis from the object-side surface of the first lens to the imaging surface of the image sensor, SL is the distance on the optical axis from the aperture to the imaging surface of the image sensor, Fno is a constant representing the brightness of the imaging optical system, IMG HT is half the diagonal length of the imaging surface of the image sensor, and FOV is the angle of view of the imaging optical system.

Example f1 f2 f3 f4 f5 f6 f7 One 3.293 -8.705 14.115 90.636 -15.266 40.265 -15.456 2 4.699 -11.772 21.070 -38.885 -12.922 2.771 -2.453 3 4.057 -11.047 44.073 -31.550 -17.744 2.228 -2.041 4 8.888 4.209 -6.477 16272754.8 517.877 -28.106 1852.192 5 8.409 4.355 -6.520 -4512.292 74.369 -22.452 1842.731 6 -64.233 3.248 -7.428 -43.722 52.425 3.010 -2.424 7 -41.858 3.128 -7.376 -103.801 64.750 2.915 -2.286 8 -38.662 2.911 -6.813 -43.728 59.023 2.640 -2.116 9 3.596 -7.349 -1245.238 15.657 -19.723 2.662 -2.171 10 3.671 -7.598 -10000 13.978 -15.153 2.617 -2.173 11 3.715 -7.660 -10000 15.301 -16.799 2.406 -2.034 12 9.952 4.985 -9.042 -60.959 28.461 -19.130 -36.205 13 9.489 5.133 -8.027 113.261 53.479 -17.195 -112.366 14 13.419 5.627 -8.921 16.142 -36.758 29.873 -12.281 15 4.273 -8.936 14.514 30.320 -17.493 61.723 -10.997 16 3.663 -6.575 13.173 72.886 -140.959 42.434 -9.509 17 3.626 -6.978 10.551 125.381 -28.155 -367.720 -9.031 18 4.553 -11.109 33.932 36.853 268.352 4.100 -2.623 19 4.290 -10.606 30.978 14.871 -21.133 3.784 -2.465 20 5.677 -73.551 -122.716 15.510 207.375 3.799 -2.466 21 3.720 -9.340 -800 14.620 -100 -674 -18.040 22 3.740 -9.750 -800 14.290 -99.5 -800 -19.010 23 18.149 4.970 -8.433 25.591 -19.167 25.748 69.101 24 3.971 -11.857 -77.132 19.846 -30.042 -18.041 68.790 25 3.620 -10.428 39.821 -38.762 4.342 10.303 -2.323 26 3.802 -8.955 64.595 12384.769 -17.503 299.093 57.797 27 4.499 -15.674 39.058 453.779 -18.160 102.612 59.134

In Table 56, f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, f4 is the focal length of the fourth lens, and f5 is of the fifth lens. F6 is the focal length of the sixth lens, and f7 is the focal length of the seventh lens.

Example L1edgeT L2edgeT L3edgeT L4edgeT L5edgeT L6edgeT L7edgeT One 0.202 0.208 0.199 0.197 0.238 0.204 0.351 2 0.253 0.354 0.255 0.348 0.284 0.256 0.831 3 0.226 0.305 0.232 0.280 0.261 0.225 0.618 4 0.232 0.262 0.334 0.193 0.270 0.288 0.298 5 0.233 0.259 0.333 0.203 0.272 0.330 0.376 6 0.220 0.270 0.348 0.224 0.259 0.269 0.437 7 0.200 0.268 0.356 0.220 0.240 0.240 0.353 8 0.194 0.250 0.328 0.211 0.239 0.222 0.388 9 0.222 0.377 0.235 0.240 0.189 0.260 0.323 10 0.181 0.365 0.201 0.239 0.393 0.361 0.817 11 0.179 0.345 0.206 0.257 0.415 0.262 0.950 12 0.257 0.255 0.340 0.276 0.365 0.307 0.278 13 0.280 0.247 0.375 0.321 0.375 0.279 0.517 14 0.250 0.250 0.440 0.270 0.318 0.652 0.294 15 0.223 0.354 0.233 0.210 0.386 0.654 0.695 16 0.225 0.368 0.245 0.232 0.200 0.615 0.447 17 0.269 0.308 0.190 0.230 0.410 0.714 0.300 18 0.323 0.418 0.258 0.328 0.292 0.401 0.493 19 0.205 0.407 0.201 0.333 0.278 0.348 0.815 20 0.218 0.347 0.211 0.259 0.277 0.251 0.950 21 0.100 0.280 0.100 0.410 0.170 0.410 0.580 22 0.110 0.290 0.100 0.330 0.140 0.420 0.620 23 0.248 0.303 0.393 0.456 0.352 0.835 0.513 24 0.250 0.275 0.277 0.250 0.337 0.479 0.782 25 0.252 0.293 0.238 0.374 0.258 0.415 0.686 26 0.293 0.298 0.252 0.251 0.409 0.715 0.678 27 0.246 0.280 0.254 0.273 0.356 0.630 0.692

In Table 57, L1edgeT is the thickness of the edge (edge) of the first lens, L2edgeT is the thickness of the edge (edge) of the second lens, L3edgeT is the thickness of the edge (edge) of the third lens, and L4edgeT is the fourth The thickness of the edge (edge) of the lens, L5edgeT is the thickness of the edge (edge) of the fifth lens, L6edgeT is the thickness of the edge (edge) of the sixth lens, and L7edgeT is the thickness of the edge (edge) of the seventh lens to be.

Example L5S1 sag L5S2 sag Yc71P1 Yc71P2 Yc72P1 One -0.405 -0.345 0.528 0.455 0.629 2 -0.464 -0.496 1.31 - 0.99 3 -0.315 -0.357 1.089 - 0.901 4 0.201 0.235 0.554 0.655 0.9 5 0.200 0.202 0.568 0.67 0.667 6 0.115 0.139 0.93 - 0.811 7 0.148 0.172 0.88 - 0.795 8 0.123 0.129 0.859 - 0.769 9 -0.466 -0.526 2.933 - 4.142 10 -0.421 -0.473 3.25 - 4.55 11 -0.422 -0.453 3.319 - 4.481 12 0.210 0.245 0.569 0.641 0.67 13 0.210 0.185 0.647 0.751 0.771 14 0.185 0.267 0.527 0.485 0.647 15 -0.415 -0.431 0.604 0.886 0.818 16 -0.340 -0.437 0.658 0.747 0.81 17 -0.261 -0.263 0.473 - 0.631 18 -0.499 -0.478 0.806 - 0.771 19 -0.485 -0.407 0.89 - 0.92 20 -0.479 -0.422 none - 0.781 21 -0.440 -0.430 0.72 - 0.12 22 -0.380 -0.430 0.72 - 0.12 23 0.210 0.372 0.61 0.706 0.722 24 0.270 0.286 0.889 - 1.015 25 0.276 0.509 - - 0.968 26 0.092 0.103 0.955 1.103 1.128 27 0.179 0.173 0.964 1.114 1.13

In Table 58, L5S1 sag is the sag value at the end of the optical portion of the first surface of the fifth lens, L5S2 sag is the sag value at the end of the optical portion of the second surface of the fifth lens, and Yc71P1 is the The thickness at the first inflection point of the first face, Yc71P2 is the thickness at the second inflection point of the first face of the seventh lens, and Yc72P1 is the thickness at the third inflection point of the second face of the seventh lens.

Example S1d S2d S3d S4d S5d S6d S7d One 1.69 1.51 1.64 2.09 2.95 4.49 - 2 2.84 2.53 2.83 3.29 4.34 6.31 - 3 2.52 2.2 2.47 2.93 3.64 5.33 - 4 1.33 1.26 0.96 1.44 1.94 2.6 - 5 1.24 1.15 1.03 1.48 1.9 2.46 - 6 1.34 1.23 1.03 1.5 1.98 2.66 - 7 1.33 1.23 1.04 1.58 2.1 2.75 - 8 1.25 1.14 0.94 1.5 1.86 2.44 - 9 2.31 2.16 2.54 2.94 4.06 4.84 5.12 10 2.48 2.26 2.56 2.84 3.76 4.78 5.2 11 2.48 2.23 2.56 2.86 3.69 4.58 5.07 12 2.58 2.4 2.49 2.97 4.16 4.89 5.51 13 2.55 2.4 2.49 2.97 4.02 4.89 5.63 14 2.65 2.46 2.39 2.9 3.8 5.15 - 15 2.706 2.468 2.446 2.616 3.308 5.582 - 16 2.176 2.058 2.122 2.39 2.808 4.792 - 17 2.12 2.1 2.04 2.12 2.81 4.64 - 18 2.43 2.48 2.89 3.38 4.57 6.18 - 19 2.32 2.36 2.56 2.93 3.7 4.35 - 20 2.41 2.3 2.66 3.03 3.76 - - 21 2.06 1.784 2.136 2.632 2.956 4.366 - 22 2.076 1.784 2.078 2.59 2.85 4.128 - 23 2.68 2.51 2.54 3 3.96 5.28 - 24 2.39 2.09 2.24 2.65 3.62 4.78 5.08 25 2.06 1.89 2.15 2.7 3.61 4.56 4.84 26 1.89 1.84 2.33 2.73 3.73 5.43 6.03 27 2.39 2.15 2.4 2.82 3.94 5.68 6.02

In Table 59, S1d is the inner diameter of the first spacer, S2d is the inner diameter of the second spacer, S3d is the inner diameter of the third spacer, S4d is the inner diameter of the fourth spacer, S5d is the inner diameter of the fifth spacer, S6d Is the inner diameter of the sixth spacer, and S7d is the inner diameter of the seventh spacer.

Example L1v L2v L3v L4v L5v L6v L7v One 2.2524 2.0618 2.2767 2.9806 5.367 7.9203 15.204 2 9.4074 6.0389 7.8806 9.9733 14.2491 18.7217 48.3733 3 6.1771 4.5153 5.2418 5.8649 8.7918 11.0804 30.7452 4 4.9183 5.6902 6.3612 5.0504 8.147 10.2679 16.4786 5 6.3442 6.9494 7.7597 6.2076 6.8959 10.3364 16.5597 6 5.7249 8.0179 8.3774 7.9589 10.3434 11.1031 27.1511 7 7.0609 8.2183 8.3812 8.577 10.4368 10.0819 25.7323 8 5.0799 5.7347 5.8704 6.465 6.7471 7.523 21.0455 9 5.2342 5.0595 5.1455 4.1402 5.9856 8.1378 19.6812 10 4.6012 5.0554 4.4232 3.7935 9.9974 13.3429 31.7191 11 4.8917 4.777 4.399 3.8155 10.2897 11.3167 33.3467 12 5.639 4.858 6.6748 7.1627 11.0369 11.9357 27.1217 13 5.8304 4.8865 6.5128 7.1688 10.887 16.2551 26.8011 14 5.165 5.3015 6.2461 7.0472 12.2503 19.1335 17.9152 15 6.5129 6.0017 5.9544 6.0281 13.8948 30.2962 31.1147 16 3.8214 4.3362 4.4869 5.6551 6.8114 19.8745 20.3749 17 3.8115 4.6714 4.0552 5.0631 11.2844 25.7618 16.5646 18 6.2758 6.5315 7.7526 9.5642 12.5716 16.0772 29.9737 19 4.2347 5.5368 5.5931 7.5471 9.4202 8.9992 27.3258 20 4.6529 4.6572 6.2312 6.7131 10.2673 11.7401 33.5372 21 2.7732 3.7423 2.4001 9.3009 4.1785 16.1001 22.2706 22 2.9525 3.7672 1.9989 7.5203 3.1364 16.7166 21.7591 23 5.1107 5.8654 6.3124 10.0933 12.273 29.3788 26.3671 24 5.1465 4.5089 4.4695 4.8122 8.9386 18.2117 35.9358 25 3.81 3.9751 3.9272 6.1885 7.516 13.0347 31.8586 26 4.7517 4.3655 6.4562 5.0723 9.8674 36.8705 47.4701 27 5.6273 4.949 5.1423 5.0791 9.3624 31.5832 47.9081

In Table 60, L1v is the volume of the first lens, L2v is the volume of the second lens, L3v is the volume of the third lens, L4v is the volume of the fourth lens, L5v is the volume of the fifth lens, and L6v Is the volume of the sixth lens, and L7v is the volume of the seventh lens. The unit of volume is mm ³ .

Example L1w L2w L3w L4w L5w L6w L7w One 2.342 2.536 2.368 3.100 6.709 9.900 15.356 2 9.784 7.428 8.196 12.267 17.811 19.471 50.308 3 6.424 5.554 5.451 7.214 10.990 11.524 31.975 4 5.115 5.918 7.952 6.313 8.473 12.835 16.643 5 6.598 7.227 9.700 7.760 7.172 12.921 16.725 6 5.954 8.339 10.472 9.710 12.619 11.547 28.237 7 7.343 8.547 10.477 10.464 12.733 10.485 26.762 8 5.283 5.964 7.338 7.887 8.231 7.824 21.887 9 5.444 6.223 5.351 4.306 7.362 8.463 20.468 10 4.785 6.218 4.600 3.945 12.297 13.877 32.988 11 5.087 5.876 4.575 3.968 12.656 11.769 34.681 12 5.865 5.052 8.344 8.953 11.478 14.920 27.393 13 6.064 5.082 8.141 7.456 11.322 20.319 27.873 14 5.372 5.514 7.808 7.329 15.313 19.899 18.632 15 6.773 7.382 7.324 6.269 17.230 37.567 31.426 16 3.974 5.334 5.519 5.881 8.446 24.644 20.579 17 3.964 5.746 4.217 5.266 14.106 26.792 17.227 18 6.527 8.034 8.063 9.947 15.463 16.720 31.173 19 4.404 6.810 5.817 7.849 11.587 9.359 28.419 20 4.839 5.728 6.480 6.982 12.629 12.210 34.879 21 2.884 4.603 2.952 9.673 5.223 20.125 22.493 22 3.071 4.634 2.459 7.821 3.921 20.896 21.977 23 5.315 6.100 7.891 10.497 12.764 30.554 27.422 24 5.352 5.546 5.497 5.005 11.173 22.765 36.295 25 3.962 4.889 4.084 7.612 7.817 13.556 33.133 26 4.942 5.370 6.714 5.275 12.334 38.345 47.945 27 5.852 6.087 5.348 5.282 11.516 32.847 48.387

In Table 61, L1w is the weight of the first lens, L2w is the weight of the second lens, L3w is the weight of the third lens, L4w is the weight of the fourth lens, L5w is the weight of the fifth lens, and L6w Is the weight of the sixth lens, and L7w is the weight of the seventh lens. The unit of weight is mg.

Example L1TR L2TR L3TR L4TR L5TR L6TR L7TR One 3.34 3.54 3.84 4.14 4.82 5.72 5.92 2 4.93 5.13 5.63 6.23 7.2 7.6 7.8 3 4.22 4.42 4.72 5.52 6.24 6.64 6.84 4 3.13 3 2.75 2.49 2.37 2.23 2.15 5 2.29 2.4 2.54 2.63 2.78 2.91 3.04 6 2.46 2.58 2.69 2.8 3.17 3.31 3.47 7 2.48 2.61 2.72 2.82 3.19 3.34 3.5 8 2.19 2.32 2.44 2.57 2.74 3 3.11 9 4.22 4.42 4.54 4.72 5.4 5.74 6.3 10 4.2 4.35 4.49 4.65 5.5 5.84 6.63 11 4.14 4.28 4.42 4.58 5.45 5.79 6.58 12 4.21 4.3 4.44 4.84 5.47 6.12 6.9 13 4.21 4.3 4.44 4.84 5.47 6.12 6.9 14 4.19 4.28 4.41 4.81 5.51 6.16 6.52 15 4.502 4.69 5.164 5.752 6.608 6.996 7.182 16 3.836 3.974 4.536 5.176 6.33 6.458 6.558 17 3.51 3.81 4.39 4.98 5.85 6.15 6.25 18 4.27 4.46 5.04 5.63 6.5 6.9 7.1 19 3.93 4.13 4.71 6.17 5.3 6.57 6.67 20 4.03 4.23 4.81 5.4 6.27 6.67 6.77 21 3.802 4.012 4.126 4.902 5.646 6.086 6.422 22 3.8 3.99 4.068 4.816 5.514 5.92 6.246 23 4.26 4.35 4.49 4.89 5.52 6.75 7.26 24 4.1 4.19 4.32 4.72 5.35 6.17 7.03 25 3.73 3.82 3.96 4.39 4.96 6 6.86 26 3.97 4.06 4.19 4.63 5.2 7.15 8.02 27 4.39 4.48 4.61 5.04 5.61 7.09 7.95

In Table 62, L1TR is the maximum outer diameter of the first lens, L2TR is the maximum outer diameter of the second lens, L3TR is the maximum outer diameter of the third lens, L4TR is the maximum outer diameter of the fourth lens, and L5TR is the It is the maximum outer diameter, L6TR is the maximum outer diameter of the sixth lens, and L7TR is the maximum outer diameter of the seventh lens. Maximum outer diameter means the outer diameter including the rib of the lens.

Example L1rt L2rt L3rt L4rt L5rt L6rt L7rt One 0.245 0.26 0.25 0.235 0.285 0.265 0.44 2 0.58 0.38 0.33 0.3 0.39 0.475 0.92 3 0.485 0.375 0.31 0.21 0.295 0.335 0.685 4 0.51 0.46 0.48 0.27 0.4 0.32 0.36 5 0.54 0.5 0.52 0.42 0.21 0.39 0.4 6 0.39 0.44 0.47 0.36 0.42 0.38 0.47 7 0.59 0.44 0.47 0.35 0.38 0.3 0.39 8 0.54 0.37 0.41 0.33 0.37 0.27 0.42 9 0.435 0.43 0.36 0.215 0.32 0.33 0.405 10 0.38 0.46 0.35 0.18 0.51 0.47 0.85 11 0.41 0.45 0.34 0.18 0.45 0.37 1.01 12 0.55 0.38 0.58 0.41 0.5 0.32 0.53 13 0.56 0.38 0.56 0.41 0.5 0.32 0.54 14 0.52 0.42 0.52 0.41 0.61 0.7 0.37 15 0.482 0.492 0.369 0.196 0.427 0.615 0.737 16 0.422 0.482 0.258 0.282 0.269 0.558 0.489 17 0.482 0.395 0.316 0.328 0.422 0.885 0.409 18 0.508 0.554 0.444 0.473 0.41 0.438 0.522 19 0.431 0.556 0.361 0.429 0.38 0.38 0.667 20 0.431 0.457 0.361 0.364 0.38 0.334 0.729 21 0.35 0.423 0.276 0.46 0.172 0.525 0.641 22 0.366 0.392 0.239 0.383 0.137 0.605 0.655 23 0.5 0.41 0.51 0.54 0.52 0.97 0.55 24 0.46 0.4 0.39 0.26 0.43 0.54 0.83 25 0.4 0.42 0.37 0.5 0.32 0.46 0.72 26 0.47 0.41 0.45 0.41 0.47 0.93 0.7 27 0.44 0.39 0.4 0.4 0.38 0.74 0.72

In Table 63, L1rt is the maximum thickness of the rib of the first lens, L2rt is the maximum thickness of the rib of the second lens, L3rt is the maximum thickness of the rib of the third lens, and L4rt is the maximum thickness of the rib of the fourth lens. L5rt is the maximum thickness of the rib of the fifth lens, L6rt is the maximum thickness of the rib of the sixth lens, and L7rt is the maximum thickness of the rib of the seventh lens. The maximum thickness of the ribs means the thickness of the portion in contact with the spacer.

58 shows the maximum outer diameter L7TR of the seventh lens, the maximum thickness L7rt of the ribs, the edge thickness L7edgeT of the seventh lens, the lens thickness Yc71P1 at the first inflection point of the object side of the seventh lens, The lens thickness Yc71P2 at the second inflection point on the object side of the seventh lens and the lens thickness Yc72P1 at the third inflection point on the image side of the seventh lens are shown.

In the above description of the configuration and features of the present invention based on the embodiment according to the present invention, the present invention is not limited thereto, and various changes or modifications can be made within the spirit and scope of the present invention. It will be apparent to those skilled in the art that such changes or modifications fall within the scope of the appended claims.

110: first lens
120: second lens
130: third lens
140: fourth lens
150: fifth lens
160: sixth lens
170: seventh lens
180: infrared cut filter
190: image sensor
ST: aperture

Claims (20)

And a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed along the optical axis from the object side toward the image side.
Spacers are disposed between adjacent lenses, and the inner diameter of the sixth spacer disposed between the sixth and seventh lenses is S6d, and the total focal length of the optical system including the first to seventh lenses. An imaging optical system satisfying 0.5 < S6d / f < 1.4 when f is referred to.
The method of claim 1,
An imaging optical system satisfying 0.5 <S6d / f <1.2.
The method of claim 1,
When the weight of the first lens is L1w and the weight of the seventh lens is L7w,
An imaging optical system satisfying 0.1 <L1w / L7w <0.3.
The method of claim 1,
When the maximum diameter of the first lens is L1TR and the maximum diameter of the seventh lens is L7TR,
An imaging optical system satisfying 0.4 <L1TR / L7TR <0.7.
The method of claim 1,
When the average value of the maximum diameters of the first to fourth lenses is L1234TRavg and the maximum diameter of the seventh lens is L7TR,
An imaging optical system satisfying 0.5 <L1234TRavg / L7TR <0.75.
The method of claim 1,
When the average value of the maximum diameters of the first to fifth lenses is L12345TRavg, and the maximum diameter of the seventh lens is L7TR,
An imaging optical system satisfying 0.5 <L12345 TRavg / L7TR <0.76.
The method of claim 1,
The focal length of the first lens f1, the focal length of the second lens f2, the focal length of the third lens f3, the focal length of the fourth lens f4, the focal length of the fifth lens f5, When the focal length of the sixth lens is f6, the focal length of the seventh lens is f7, and the total focal length of the optical system including the first to seventh lenses is f,
An imaging optical system satisfying 0.1 <(1 / f1 + 1 / f2 + 1 / f3 + 1 / f4 + 1 / f5 + 1 / f6 + 1 / f7) * f <0.8.
The method of claim 1,
The focal length of the first lens f1, the focal length of the second lens f2, the focal length of the third lens f3, the focal length of the fourth lens f4, the focal length of the fifth lens f5, When the focal length of the sixth lens is f6, the focal length of the seventh lens is f7, and the distance on the optical axis from the object-side surface of the first lens to the image pickup surface of the image sensor is TTL,
An imaging optical system satisfying 0.1 <(1 / f1 + 1 / f2 + 1 / f3 + 1 / f4 + 1 / f5 + 1 / f6 + 1 / f7) * TTL <1.0.
The method of claim 1,
When the optical axis image thickness of the first lens is TD1 and the optical axis image distance from the object side surface of the sixth lens to the image side surface of the seventh lens is D67,
An imaging optical system satisfying 0.2 <TD1 / D67 <0.8.
The method of claim 1,
When the distance on the optical axis from the object-side surface of the first lens to the imaging surface of the image sensor is TTL, and half of the diagonal length of the imaging surface of the image sensor is Img HT
TTL ≤ 6.00 mm and
Imaging optical system that satisfies 0.6 <TTL / (2 * Img HT) <0.9.
The method of claim 1,
When the sum of the air gaps between the first lens and the seventh lens is? SD, and the sum of the thicknesses on the optical axis of the first to seventh lenses is? TD,
Optical system that satisfies 0.2 <∑SD / ∑TD <0.7.
The method of claim 1,
Min (f1: f3) is the minimum value of the focal length absolute values of the first to third lenses, and max (f4: f7) is the maximum value of the absolute focal length values of the fourth to seventh lenses. time,
An imaging optical system that satisfies 0 <min (f 1: f 3) / max (f 4: f 7) <0.4.
The method of claim 1,
When the distance on the optical axis from the object side surface of the first lens to the image pickup surface of the image sensor is TTL, and the sum of the thicknesses on the optical axis images of the first to seventh lenses is? TD,
Imaging optical system that satisfies 0.4 <∑TD / TTL <0.7.
The method of claim 1,
When a composite focal length of the first lens and the second lens is f12 and a composite focal length of the first to third lenses is f123,
An imaging optical system satisfying 0.81 <f12 / f123 <0.96.
The method of claim 1,
When a composite focal length of the first lens and the second lens is f12 and a composite focal length of the first to fourth lenses is f1234,
An imaging optical system satisfying 0.6 < f12 / f1234 < 0.84.
The method of claim 1,
The second lens has a positive refractive power, and the third lens has a positive refractive power.
The method of claim 1,
And the fifth lens has negative refractive power, and the object-side surface of the fifth lens is concave or convex in the paraxial region.
The method of claim 1,
The fifth lens has negative refractive power, and the image-side surface of the fifth lens is concave or convex in the paraxial region.
The method of claim 1,
And an object-side surface of the sixth lens is concave or convex in the paraxial region.
The method of claim 1,
And an object-side surface of the seventh lens is concave in the paraxial region.

Images