Imaging lens system

Abstract

An imaging lens system is provided. The imaging lens system includes: a first lens having refractive power; a second lens having refractive power; a third lens having a convex object-side surface; a fourth lens having refractive power; a fifth lens having refractive power; and a sixth lens having refractive power. The first to sixth lenses are sequentially arranged from an object side toward an imaging plane. The imaging lens system satisfies a conditional expression TTL / flt; 1.0 and 0.9 lt; f1 / f4lt; tTL is the distance from the object side surface to the imaging surface of the first lens, f is the focal length of the imaging lens system, f1 is the focal length of the first lens, and f4 is the focal length of the fourth lens.

Description

[0001] Cross - reference to related applications

[0002] This application claims the benefit of priority to Korean Patent Application No. 10 - 2023 - 0118393, filed on September 6, 2023, with the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes. Technical field

[0003] The following description relates to an imaging lens system. Background art

[0004] A portable terminal may include a camera module. For example, the camera module may be mounted in a front portion or a rear portion of the portable terminal. As the use of the portable terminal for capturing still images increases or as the use of the portable terminal for recording moving images increases, a camera module with a high magnification and high performance (e.g., a low f - number) is required.

[0005] To implement a camera module with a high magnification and high performance, an imaging lens system including a lens with a large effective diameter is required. However, since the installation space for the camera module in the portable terminal may be quite narrow, it may be difficult to arrange the above - type imaging lens system. Summary of the utility model

[0006] The present Summary of the utility model section is intended to introduce, in a brief form, a selection of concepts that will be further described in the Detailed Description section below. The Summary of the utility model section is not intended to identify the key features or essential features of the claimed subject matter, nor is it intended to assist in determining the scope of the claimed subject matter.

[0007] In general, an imaging lens system includes: a first lens having a refractive power; a second lens having a refractive power; a third lens having a convex object - side surface; a fourth lens having a refractive power; a fifth lens having a refractive power; and a sixth lens having a refractive power, wherein the first lens to the sixth lens are arranged in order from the object side toward the imaging surface, and wherein the imaging lens system satisfies the following conditional expressions: TTL / f < 1.0 and 0.9 < f1 / f4 < 1.4, where TTL is the distance from the object - side surface of the first lens to the imaging surface, f is the focal length of the imaging lens system, f1 is the focal length of the first lens, and f4 is the focal length of the fourth lens.

[0008] The first lens may have a convex object - side surface.

[0009] The second lens may have a concave image - side surface.

[0010] The fourth lens may have a convex object - side surface.

[0011] The fifth lens may have a concave object side surface.

[0012] The imaging lens system may satisfy the following conditional expression: 2.0 < TTL / BFL < 3.0, where BFL is the distance from the image side surface of the last lens disposed closest to the imaging surface to the imaging surface.

[0013] The imaging lens system may satisfy the following conditional expression: 0.42 < IMG HT / BFL < 0.60, where IMG HT is the height of the imaging surface, and BFL is the distance from the image side surface of the last lens disposed closest to the imaging surface to the imaging surface.

[0014] In general, the imaging lens system includes: a first lens having a refractive power; a second lens having a refractive power; a third lens having a refractive power; a fourth lens having a convex image side surface; a fifth lens having a concave object side surface; and a sixth lens having a refractive power, wherein the first lens to the sixth lens are arranged in order from the object side toward the imaging surface, wherein one or more of the first lens to the sixth lens are formed such that the effective radius in a first direction intersecting the optical axis is different from the effective radius in a second direction intersecting the optical axis, and wherein the imaging lens system satisfies the following conditional expression: TTL / f < 1.0, where TTL is the distance from the object side surface of the first lens to the imaging surface, and f is the focal length of the imaging lens system.

[0015] The first lens may have a convex object side surface.

[0016] The second lens may have a concave image side surface.

[0017] The third lens may have a convex object side surface.

[0018] The sixth lens may have a convex object side surface.

[0019] The imaging lens system may satisfy the following conditional expression: 0.5 < AR1 < 1.0, where AR1 is the ratio (Yc1 / Xc1) of the effective radius (Yc1) of the first lens in the short-axis direction (second direction) to the effective radius (Xc1) of the first lens in the long-axis direction (first direction).

[0020] The imaging lens system may satisfy the following conditional expression: 0 < (D12 + D23) / D34 < 0.8, where D12 is the distance from the image side surface of the first lens to the object side surface of the second lens, D23 is the distance from the image side surface of the second lens to the object side surface of the third lens, and D34 is the distance from the image side surface of the third lens to the object side surface of the fourth lens.

[0021] The imaging lens system can satisfy the following conditional expression: 0.3 < Xc1 / SumT < 0.8, where Xc1 is the effective radius of the first lens in the major axis direction (the first direction), and SumT is the sum of the thicknesses of all the lenses disposed between the object and the imaging surface.

[0022] The imaging lens system can satisfy the following conditional expression: 2.0 < TTL / SumT < 3.0, where SumT is the sum of the thicknesses of all the lenses disposed between the object and the imaging surface.

[0023] In general, the imaging lens system includes: a first lens having a refractive power; a second lens having a refractive power; a third lens having a convex object side surface; a fourth lens having a refractive power; a fifth lens having a refractive power; and a sixth lens having a refractive power, where the first lens to the sixth lens are arranged in order from the object side toward the imaging surface, and where the imaging lens system satisfies the following conditional expression: 0.20 < D56 / BFL < 0.50, where D56 is the distance from the image side surface of the fifth lens to the object side surface of the sixth lens, and BFL is the distance from the image side surface of the last lens disposed closest to the imaging surface to the imaging surface.

[0024] The imaging lens system may further include a seventh lens disposed on the image side of the sixth lens.

[0025] The seventh lens may have a convex object side surface in the paraxial region and a concave image side surface in the paraxial region.

[0026] Other features and aspects will be apparent from the accompanying drawings and the following detailed description. Description of the Drawings

[0027] Figure 1 A configuration diagram showing an exemplary imaging lens system according to a first example.

[0028] Figure 2 Shows Figure 1 the aberration curves of the exemplary imaging lens system shown in

[0029] Figure 3 A configuration diagram showing an exemplary imaging lens system according to a second example.

[0030] Figure 4 Shows Figure 3 the aberration curves of the exemplary imaging lens system shown in

[0031] Figure 5 A configuration diagram showing an exemplary imaging lens system according to a third example.

[0032] Figure 6 Shows Figure 5Aberration curves for the exemplary imaging lens system shown in .

[0033] Figure 7 A configuration diagram of an exemplary imaging lens system according to a fourth example is shown.

[0034] Figure 8 Shows Figure 7 Aberration curves for the exemplary imaging lens system shown in .

[0035] Fig. 9 A configuration diagram of an exemplary imaging lens system according to a fifth example is shown.

[0036] Fig.10 Shows Fig. 9 Aberration curves for the exemplary imaging lens system shown in .

[0037] Fig.11 A configuration diagram of an exemplary imaging lens system according to a sixth example is shown.

[0038] Fig.12 Shows Fig.11 Aberration curves for the exemplary imaging lens system shown in .

[0039] Fig.13 A configuration diagram of an exemplary imaging lens system according to a seventh example is shown.

[0040] Fig.14 Shows Fig.13 Aberration curves for the exemplary imaging lens system shown in .

[0041] Fig.15 A configuration diagram of an exemplary imaging lens system according to an eighth example is shown.

[0042] Fig.16 Shows Fig.15 Aberration curves for the exemplary imaging lens system shown in .

[0043] Fig.17 A configuration diagram of an exemplary imaging lens system according to a ninth example is shown.

[0044] Fig.18 Shows Fig.17 Aberration curves for the exemplary imaging lens system shown in .

[0045] Fig.19 A configuration diagram of an exemplary imaging lens system according to a tenth example is shown.

[0046] Fig. 20 Shows Fig.19 Aberration curves for the exemplary imaging lens system shown in .

[0047] Fig.21 A configuration diagram of an exemplary imaging lens system according to an eleventh example is shown.

[0048] Fig. 22 Shows Fig.21 Aberration curves for the exemplary imaging lens system shown in .

[0049] Fig.23 A configuration diagram of an exemplary imaging lens system according to a twelfth example is shown.

[0050] Fig.24 Shows Fig.23 Aberration curves for the exemplary imaging lens system shown in .

[0051] Fig.25 A configuration diagram of an exemplary imaging lens system according to a thirteenth example is shown.

[0052] Fig.26 Shows Fig.25 Aberration curves for the exemplary imaging lens system shown in .

[0053] Fig. 27 Plan views of first to third lenses according to one or more examples are illustrated.

[0054] Fig.28 Modified examples of the exemplary imaging lens systems according to the first example to the thirteenth example are shown.

[0055] Throughout the drawings and detailed description, unless otherwise described, the same reference numerals refer to the same elements. For purposes of clarity, illustration, and convenience, the drawings may not be drawn to scale, and the relative sizes, proportions, and descriptions of elements in the drawings may be exaggerated. DETAILED DESCRIPTION

[0056] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the method, device and / or system described herein. However, various changes, modifications and equivalents of the method, device and / or system described herein will be apparent after understanding the disclosure of the application. For example, the order in the operation described herein and / or the order of the operation described herein are merely examples, and are not limited to the order set forth herein, except for the order and / or the order of operations in the operation that must occur in a specific sequence, but can be changed, which will be apparent after understanding the disclosure of the application. As another example, except for the order and / or the order of operations in the operation that must occur in a sequence (e.g., a specific sequence), the order in the order of operations and / or operations can be performed in parallel. In addition, for greater clarity and brevity, the description of features known after understanding the disclosure of the application can be omitted.

[0057] Although terms such as "first", "second" and "third" or A, B, (a), (b), etc. may be used herein to describe various members, components, regions, layers or portions, these members, components, regions, layers or portions are not limited by these terms. Each of these terms is not used to define, for example, the importance, sequence or order of the corresponding member, component, region, layer or portion, but is only used to distinguish the corresponding member, component, region, layer or portion from other members, components, regions, layers or portions. Therefore, without departing from the teachings of the examples described herein, the first member, first component, first region, first layer or first portion mentioned in these examples may also be referred to as the second member, second component, second region, second layer or second portion.

[0058] Throughout the specification, when a component, element or layer is described as being "on another component, element or layer," "connected to," "coupled to," or "engaged to" another component, element or layer, it may be directly "on another component, element or layer," directly "connected to," "coupled to," or "engaged to" another component, element or layer (e.g., in contact with another component, element or layer), or there may reasonably be one or more other components, elements, layers between the component, element or layer and the other component, element or layer. When a component, element or layer is described as being "directly on another component, element or layer," "directly connected to," "directly coupled to," or "directly engaged to" another component, element or layer, there are no other components, elements, or layers between the component, element or layer and the other component, element or layer. Similarly, expressions such as "between" and "directly between," as well as "adjacent" and "directly adjacent" may also be interpreted as described above.

[0059] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the terms "one", "an" and "the" are intended to include plural forms as well. As non-limiting examples, the terms "comprise", "include" and "have" illustrate the existence of the described features, quantities, operations, components, elements and / or combinations thereof, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or combinations thereof, or the existence of alternative features, quantities, operations, components, elements and / or combinations thereof. In addition, although an embodiment can set forth the terms "comprise", "include" and "have" to illustrate the existence of the described features, quantities, operations, components, elements and / or combinations thereof, other embodiments may exist, in which one or more of the described features, quantities, operations, components, elements and / or combinations thereof are not present.

[0060] In the drawings attached to this specification, the thickness, size, and shape of the lens are slightly exaggerated for explanation, and the spherical shape or aspherical shape of the lens is shown only as an example and is not limited to the shown shape.

[0061] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items. The phrases "at least one of A, B, and C," etc. are intended to have a disjunctive meaning, and these phrases "at least one of A, B, and C," etc. also include examples in which one or more of A, B, and C may be present (e.g., any combination of one or more of A, B, and C), unless the corresponding description and implementation require that the enumeration (e.g., "at least one of A, B, and C") be interpreted as having a conjunctive meaning.

[0062] The features described herein may be embodied in different forms and should not be construed as being limited to the examples described herein. On the contrary, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application. In this article, the use of the wording "may" relative to an example or implementation (e.g., content that may be included or implemented with respect to an example or implementation) means that there is at least one example or implementation that includes or implements such a feature, and all examples or implementations are not limited thereto. The words "example" or "implementation" used herein have the same meaning (e.g., the phrase "in one example" has the same meaning as "in one implementation", and "in one or more examples" has the same meaning as "in one or more implementations").

[0063] In an example, the imaging lens system may be configured to achieve high resolution even in low illumination environments.

[0064] One or more examples may provide an imaging lens system configured to implement a camera module having high magnification and high performance.

[0065] In one or more examples, the first lens refers to the lens closest to the object (or the photographed subject), and the sixth lens or the seventh lens refers to the lens closest to the imaging plane (or the image sensor). In one or more examples, the units of the radius of curvature, thickness, TTL (the distance from the object side of the first lens to the imaging plane), IMG HT (the height of the imaging plane), and focal length are expressed in millimeters (mm).

[0066] The thickness of a lens, the gap between lenses, and TTL refer to the distance measured on the optical axis of the lens. In addition, in the description of the shape of a lens, a configuration in which one surface is convex means that the paraxial region of the surface is convex, and a configuration in which one surface is concave means that the paraxial region of the surface is concave. Therefore, even when one surface of a lens is described as convex, the edge of the lens may be concave. Similarly, even when one surface of a lens is described as concave, the edge of the lens may be convex.

[0067] The imaging lens system according to the first aspect may include six or seven lenses. For example, the imaging lens system may include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged sequentially from the object side toward the imaging surface. As another example, the imaging lens system may include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged sequentially from the object side toward the imaging surface. The imaging lens system according to the first aspect may include a lens having a convex object side surface. For example, in the imaging lens system according to the first aspect, the third lens may have a convex object side surface. The imaging lens system according to the first aspect may satisfy a unique conditional expression. For example, the imaging lens system according to the first aspect may satisfy all of the following conditional expressions:

[0068] TTL / f<1.0

[0069] 0.9 <f1 / f4<1.4

[0070] In the above conditional expressions, TTL is the distance from the object side surface of the first lens to the imaging surface, f is the focal length of the imaging lens system, f1 is the focal length of the first lens, and f4 is the focal length of the fourth lens.

[0071] The imaging lens system according to the second aspect may include a total of six or seven lenses. For example, the imaging lens system may include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged in sequence from the object side toward the imaging surface. As another example, the imaging lens system may include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged in sequence from the object side toward the imaging surface. The imaging lens system according to the second aspect may include a lens having a convex image side surface. For example, in the imaging lens system according to the second aspect, the fourth lens may have a convex image side surface. The imaging lens system according to the second aspect may include a lens having a concave object side surface. For example, in the imaging lens system according to the second aspect, the fifth lens may have a concave object side surface. The imaging lens system according to the second aspect may include one or more lenses configured so that the effective radius Xc in the first direction intersecting the optical axis is different from the effective radius Yc in the second direction intersecting the optical axis. For example, in the imaging lens system according to the second aspect, the effective radius Xc in the first direction and the effective radius Yc in the second direction in one or more lenses of the first lens to the sixth lens may be formed to have different lengths. The imaging lens system according to the second aspect may satisfy a unique conditional expression. For example, the imaging lens system according to the second aspect may satisfy the conditional expression TTL / f<1.0.

[0072] The imaging lens system according to the third aspect may include the first lens to the sixth lens or the first lens to the seventh lens arranged in order from the object side toward the imaging plane, and may satisfy one or more of the following conditional expressions:

[0073] 0.5 <AR1<1.0

[0074] 0<(D12+D23) / D34<0.8

[0075] 0.3 <Xc1 / SumT<0.8

[0076] 2.0 <TTL / SumT<3.0

[0077] In the above conditional expressions, AR1 is a ratio (Yc1 / Xc1) of an effective radius (Yc1) of the first lens (on the object side) in the short axis direction to an effective radius (Xc1) of the first lens (on the object side) in the long axis direction, D12 is a distance from the image side surface of the first lens to the object side surface of the second lens, D23 is a distance from the image side surface of the second lens to the object side surface of the third lens, D34 is a distance from the image side surface of the third lens to the object side surface of the fourth lens, and SumT is a sum of thicknesses of all lenses (e.g., the first lens to the sixth lens or the first lens to the seventh lens) disposed between the object and the imaging plane.

[0078] The imaging lens system according to the fourth aspect may include the first lens to the sixth lens or the first lens to the seventh lens arranged sequentially from the object side toward the imaging surface, and may include one or more lenses configured so that the effective radius Xc in the first direction intersecting the optical axis is different from the effective radius Yc in the second direction intersecting the optical axis. For example, in the imaging lens system according to the fourth aspect, the effective radius Xc in the first direction and the effective radius Yc in the second direction in one or more of the first lens to the third lens can be formed to have different lengths. In addition, the imaging lens system according to the fourth aspect may satisfy one or more of the following conditional expressions:

[0079] 0.5 <AR1<0.8

[0080] 0.6 <AR2<0.9

[0081] 0.7 <AR3<1.0

[0082] 1.0 <AR1 / AR2<1.2

[0083] 1.2 <AR1 / AR3<1.3

[0084] In the above conditional expressions, AR2 is a ratio (Yc2 / Xc2) of an effective radius (Yc2) of the second lens in the short axis direction to an effective radius (Xc2) of the second lens in the long axis direction, and AR3 is a ratio (Yc3 / Xc3) of an effective radius (Yc3) of the third lens in the short axis direction to an effective radius (Xc3) of the third lens in the long axis direction.

[0085] The imaging lens system according to the fifth aspect may include the first lens to the sixth lens or the first lens to the seventh lens arranged in order from the object side toward the imaging plane, and may satisfy one or more of the following conditional expressions:

[0086] TTL / f<1.0

[0087] 2.0 <TTL / BFL<3.0

[0088] 0.50 <ER1 / BFL<0.80

[0089] 0.20 <D56 / BFL<0.50

[0090] 2.0 <f / BFL<3.0

[0091] -1.40 <f5 / BFL<-0.70

[0092] 0.42 <IMG HT / BFL<0.60

[0093] In the above conditional expressions, ER1 is the maximum effective radius of the first lens, BFL is the distance from the image side surface of the last lens (e.g., the sixth lens or the seventh lens) disposed closest to the imaging plane to the imaging plane, D56 is the distance from the image side surface of the fifth lens to the object side surface of the sixth lens, f5 is the focal length of the fifth lens, and IMG HT is the height of the imaging plane.

[0094] The imaging lens system according to the sixth aspect may include the first lens to the sixth lens or the first lens to the seventh lens arranged in order from the object side toward the imaging plane, and may satisfy one or more of the following conditional expressions:

[0095] 0.90 <f1 / f4<1.40

[0096] -0.80 <f2 / f3<-0.40

[0097] -2.0 <f4 / f5<-1.0

[0098] 0.90<(f2+f3) / (f4+f5)<4.0

[0099] 0.60 <R1 / R10<1.40

[0100] 0.80<(R1+R4) / (R5+R10)<1.20

[0101] 0.80 <T1 / (T2+T3)<1.32

[0102] 0.70 <T4 / (T5+T6)<1.60

[0103] In the above conditional expressions, 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, 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, R10 is the radius of curvature of the image side surface of the fifth lens, T1 is the thickness of the first lens, T2 is the thickness of the second lens, T3 is the thickness of the third lens, T4 is the thickness of the fourth lens, T5 is the thickness of the fifth lens, and T6 is the thickness of the sixth lens.

[0104] The imaging lens system according to the seventh aspect may include at least one characteristic according to the first to sixth aspects, and may be configured to also include an optical path conversion device. For example, the imaging lens system according to the seventh aspect may also include a prism disposed on the object side of the first lens and the characteristics according to the first aspect. As another example, the imaging lens system according to the seventh aspect may also include a prism disposed on the object side of the first lens and the characteristics according to the second aspect. For reference, the placement position of the prism (i.e., the optical path conversion device) is not limited to the object side of the first lens, and it may also be disposed between the first lens and the second lens, or between the last lens (the sixth lens or the seventh lens) and the imaging plane.

[0105] The imaging lens system according to one or more examples may include at least one lens having the following characteristics as needed. For example, the imaging lens system according to the first aspect may include at least one of the first lens to the seventh lens having the following characteristics. As another example, the imaging lens system according to the second aspect to the seventh aspect may include at least one of the first lens to the seventh lens having the following characteristics. However, the imaging lens system according to the above aspects may not necessarily include a lens having the following characteristics. Below, the characteristics of the first lens to the seventh lens will be described.

[0106] The first lens may have a refractive power. For example, the first lens may have a positive refractive power. The first lens may have a convex surface. For example, the first lens may have a convex object side surface. The first lens may include an aspherical surface. For example, both surfaces of the first lens may be aspherical. The first lens may be formed of a material having high light transmittance and excellent processability. For example, the first lens may be formed of a plastic material or a glass material. The first lens may be configured to have a predetermined refractive index. For example, the refractive index of the first lens may be less than 1.6. The first lens may have a predetermined Abbe number. For example, the Abbe number of the first lens may be 54 or greater.

[0107] The second lens may have a refractive power. For example, the second lens may have a negative refractive power. The second lens may have a concave surface. For example, the second lens may have a concave image side surface. The second lens may include an aspherical surface. For example, both surfaces of the second lens may be aspherical. The second lens may be formed of a material having high light transmittance and excellent processability. For example, the second lens may be formed of a plastic material or a glass material. The second lens may be configured to have a refractive index greater than that of the first lens. For example, the refractive index of the second lens may be greater than 1.6. The second lens may have a predetermined Abbe number. For example, the Abbe number of the second lens may be 20 or greater. As another example, the Abbe number of the second lens may be greater than 20 but less than 30.

[0108] The third lens may have a refractive power. For example, the third lens may have a positive refractive power. The third lens may have a convex surface. For example, the third lens may have a convex object side surface. The third lens may include an aspherical surface. For example, both surfaces of the third lens may be aspherical. The third lens may be formed of a material having high light transmittance and excellent processability. For example, the third lens may be formed of a plastic material. The third lens may be configured to have a refractive index smaller than that of the second lens. For example, the refractive index of the third lens may be less than 1.6. The third lens may have a predetermined Abbe number. For example, the Abbe number of the third lens may be greater than 50. As another example, the Abbe number of the third lens may be greater than 50 but less than 60.

[0109] The fourth lens may have a refractive power. For example, the fourth lens may have a positive refractive power. The fourth lens may have a convex surface. For example, the fourth lens may have a convex object side surface. As another example, the fourth lens may have a convex image side surface. The fourth lens may include an aspherical surface. For example, both surfaces of the fourth lens may be aspherical. The fourth lens may be formed of a material having high light transmittance and excellent processability. The fourth lens may be formed of a plastic material. The fourth lens may be configured to have a refractive index greater than that of the first lens. For example, the refractive index of the fourth lens may be greater than 1.6. The fourth lens may have a predetermined Abbe number. For example, the Abbe number of the fourth lens may be less than 30.

[0110] The fifth lens may have a refractive power. For example, the fifth lens may have a negative refractive power. The fifth lens may have a concave surface. For example, the fifth lens may have a concave object-side surface. The fifth lens may include an aspherical surface. For example, at least one surface of the fifth lens may be aspherical. The fifth lens may be formed of a material having high light transmittance and excellent processability. For example, the fifth lens may be formed of a plastic material. The fifth lens may be configured to have a refractive index greater than that of the first lens. For example, the refractive index of the fifth lens may be greater than 1.6. The fifth lens may have a predetermined Abbe number. For example, the Abbe number of the fifth lens may be less than 30.

[0111] The sixth lens may have a refractive power. For example, the sixth lens may have a positive refractive power or a negative refractive power. The sixth lens may have a convex surface. For example, the sixth lens may have a convex image side surface or a convex object side surface. The sixth lens may include an aspherical surface. For example, at least one surface of the sixth lens may be aspherical. The sixth lens may be formed of a material having high light transmittance and excellent processability. For example, the sixth lens may be formed of a plastic material. The sixth lens may be configured to have a predetermined refractive index. For example, the refractive index of the sixth lens may be less than 1.6. The sixth lens may have a predetermined Abbe number. For example, the Abbe number of the sixth lens may be greater than 50.

[0112] The seventh lens may have a refractive power. For example, the seventh lens may have a negative refractive power. The seventh lens may have a convex surface. For example, the seventh lens may have a convex object side surface. The seventh lens may include an aspherical surface. For example, at least one surface of the seventh lens may be aspherical. The seventh lens may include an inflection point. For example, the inflection point may be formed on at least one of the object side surface or the image side surface of the seventh lens. The seventh lens may be formed of a material having high light transmittance and excellent processability. For example, the seventh lens may be formed of a plastic material. The seventh lens may be configured to have a predetermined refractive index. For example, the refractive index of the seventh lens may be less than 1.6. The seventh lens may have a predetermined Abbe number. For example, the Abbe number of the seventh lens may be greater than 50.

[0113] As described above, the first to seventh lenses may include a spherical surface or an aspherical surface. When the first to seventh lenses include an aspherical surface, the aspherical surface of the corresponding lens may be expressed by Equation 1.

[0114] Equation 1:

[0115]

[0116] In Equation 1, c is the inverse of the radius of curvature of the corresponding lens, k is a quadratic curve constant, r is the distance from a certain point on the aspherical surface to the optical axis, A to H, J and L to P are aspherical constants, and Z (or SAG) is the height from a certain point on the aspherical surface to the vertex of the corresponding aspherical surface in the optical axis direction.

[0117] The imaging lens system according to the above embodiment or the above aspect may further include a filter. As an example, the filter may be disposed between the sixth lens or the seventh lens and the imaging plane. The filter may be configured to block light of a specific wavelength. For reference, the filter described in one or more examples is configured to block infrared rays, but the wavelength of light blocked by the filter is not limited to infrared rays.

[0118] Hereinafter, specific embodiments will be described in detail based on the attached illustrative drawings.

[0119] First, refer to Figure 1 An imaging lens system 100 according to a first example of one or more embodiments is described.

[0120] The imaging lens system 100 may include a plurality of lenses. For example, the imaging lens system 100 may include a first lens 110, a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, and a sixth lens 160 sequentially arranged from the object side toward the imaging surface.

[0121] The first lens 110 may have positive refractive power and may have a convex object-side surface and a convex image-side surface. The second lens 120 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The third lens 130 may have positive refractive power and may have a convex object-side surface and a concave image-side surface. The fourth lens 140 may have positive refractive power and may have a convex object-side surface and a convex image-side surface. The fifth lens 150 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The sixth lens 160 may have negative refractive power and may have a convex object-side surface and a concave image-side surface.

[0122] The imaging lens system 100 may further include an optical filter IF and an imaging plane IP. The imaging plane IP may be formed on the image sensor IS, and the optical filter IF may be disposed between the sixth lens 160 and the imaging plane IP.

[0123] The imaging lens system 100 configured as above presents Figure 2 The aberration characteristics shown in Table 1 and Table 2 below show the lens characteristics and aspheric surface values ​​of the imaging lens system 100 according to the present example.

[0124] Table 1

[0125]

[0126] Table 2

[0127]

[0128]

[0129] Will refer to Figure 3 An imaging lens system 200 according to a second example of one or more embodiments is described.

[0130] The imaging lens system 200 may include a plurality of lenses. For example, the imaging lens system 200 may include a first lens 210, a second lens 220, a third lens 230, a fourth lens 240, a fifth lens 250, and a sixth lens 260 sequentially arranged from the object side toward the imaging surface.

[0131] The first lens 210 may have positive refractive power and may have a convex object side surface and a convex image side surface. The second lens 220 may have negative refractive power and may have a concave object side surface and a concave image side surface. The third lens 230 may have positive refractive power and may have a convex object side surface and a concave image side surface. The fourth lens 240 may have positive refractive power and may have a convex object side surface and a convex image side surface. The fifth lens 250 may have negative refractive power and may have a concave object side surface and a concave image side surface. The sixth lens 260 may have positive refractive power and may have a convex object side surface and a concave image side surface.

[0132] The imaging lens system 200 may further include an optical filter IF and an imaging plane IP. The imaging plane IP may be formed on the image sensor IS, and the optical filter IF may be disposed between the sixth lens 260 and the imaging plane IP.

[0133] The imaging lens system 200 configured as above presents Figure 4 The aberration characteristics shown in Table 3 and Table 4 below show the lens characteristics and aspheric surface values ​​of the imaging lens system 200 according to the present example.

[0134] Table 3

[0135]

[0136] Table 4

[0137]

[0138]

[0139] Will refer to Figure 5 An imaging lens system 300 according to a third example of one or more embodiments is described.

[0140] The imaging lens system 300 may include a plurality of lenses. For example, the imaging lens system 300 may include a first lens 310, a second lens 320, a third lens 330, a fourth lens 340, a fifth lens 350, and a sixth lens 360 sequentially arranged from the object side toward the imaging surface.

[0141] The first lens 310 may have positive refractive power and may have a convex object side surface and a concave image side surface. The second lens 320 may have negative refractive power and may have a convex object side surface and a concave image side surface. The third lens 330 may have positive refractive power and may have a convex object side surface and a concave image side surface. The fourth lens 340 may have positive refractive power and may have a convex object side surface and a convex image side surface. The fifth lens 350 may have negative refractive power and may have a concave object side surface and a concave image side surface. The sixth lens 360 may have negative refractive power and may have a convex object side surface and a concave image side surface.

[0142] The imaging lens system 300 may further include an optical filter IF and an imaging plane IP. The imaging plane IP may be formed on the image sensor IS, and the optical filter IF may be disposed between the sixth lens 360 and the imaging plane IP.

[0143] The imaging lens system 300 configured as above presents Figure 6 The aberration characteristics shown in Table 5 and Table 6 below show the lens characteristics and aspheric surface values ​​of the imaging lens system 300 according to the present example.

[0144] Table 5

[0145]

[0146] Table 6

[0147]

[0148]

[0149] Will refer to Figure 7 An imaging lens system 400 according to a fourth example of one or more embodiments is described.

[0150] The imaging lens system 400 may include a plurality of lenses. For example, the imaging lens system 400 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 460 arranged sequentially from the object side toward the imaging surface.

[0151] The first lens 410 may have positive refractive power and may have a convex object side surface and a concave image side surface. The second lens 420 may have negative refractive power and may have a convex object side surface and a concave image side surface. The third lens 430 may have positive refractive power and may have a convex object side surface and a concave image side surface. The fourth lens 440 may have positive refractive power and may have a convex object side surface and a convex image side surface. The fifth lens 450 may have negative refractive power and may have a concave object side surface and a concave image side surface. The sixth lens 460 may have negative refractive power and may have a convex object side surface and a concave image side surface.

[0152] The imaging lens system 400 may further include an optical filter IF and an imaging plane IP. The imaging plane IP may be formed on the image sensor IS, and the optical filter IF may be disposed between the sixth lens 460 and the imaging plane IP.

[0153] The imaging lens system 400 configured as above presents Figure 8 The aberration characteristics shown in Table 7 and Table 8 below show the lens characteristics and aspherical values ​​of the imaging lens system 400 according to the present example.

[0154] Table 7

[0155]

[0156]

[0157] Table 8

[0158]

[0159]

[0160] Will refer to Fig. 9 An imaging lens system 500 according to a fifth example of one or more embodiments is described.

[0161] The imaging lens system 500 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 560 arranged sequentially from the object side toward the imaging surface.

[0162] The first lens 510 may have positive refractive power and may have a convex object side surface and a concave image side surface. The second lens 520 may have negative refractive power and may have a convex object side surface and a concave image side surface. The third lens 530 may have positive refractive power and may have a convex object side surface and a concave image side surface. The fourth lens 540 may have positive refractive power and may have a convex object side surface and a convex image side surface. The fifth lens 550 may have negative refractive power and may have a concave object side surface and a concave image side surface. The sixth lens 560 may have negative refractive power and may have a convex object side surface and a concave image side surface.

[0163] The imaging lens system 500 may further include an optical filter IF and an imaging plane IP. The imaging plane IP may be formed on the image sensor IS, and the optical filter IF may be disposed between the sixth lens 560 and the imaging plane IP.

[0164] The imaging lens system 500 configured as above presents Fig.10 The aberration characteristics shown in Table 9 and Table 10 below show the lens characteristics and aspherical values ​​of the imaging lens system 500 according to the present example.

[0165] Table 9

[0166]

[0167] Table 10

[0168]

[0169]

[0170] Will refer to Fig.11 An imaging lens system 600 according to a sixth example of one or more embodiments is described.

[0171] The imaging lens system 600 may include a plurality of lenses. For example, the imaging lens system 600 may include a first lens 610, a second lens 620, a third lens 630, a fourth lens 640, a fifth lens 650, and a sixth lens 660 arranged sequentially from the object side toward the imaging surface.

[0172] The first lens 610 may have positive refractive power and may have a convex object side surface and a concave image side surface. The second lens 620 may have negative refractive power and may have a convex object side surface and a concave image side surface. The third lens 630 may have positive refractive power and may have a convex object side surface and a concave image side surface. The fourth lens 640 may have positive refractive power and may have a convex object side surface and a convex image side surface. The fifth lens 650 may have negative refractive power and may have a concave object side surface and a concave image side surface. The sixth lens 660 may have negative refractive power and may have a convex object side surface and a concave image side surface.

[0173] The imaging lens system 600 may further include an optical filter IF and an imaging plane IP. The imaging plane IP may be formed on the image sensor IS, and the optical filter IF may be disposed between the sixth lens 660 and the imaging plane IP.

[0174] The imaging lens system 600 configured as above presents Fig.12 The aberration characteristics shown in Table 11 and Table 12 below show the lens characteristics and aspherical values ​​of the imaging lens system 600 according to the present example.

[0175] Table 11

[0176]

[0177] Table 12

[0178]

[0179]

[0180] Will refer to Fig.13 An imaging lens system 700 according to a seventh example of one or more embodiments is described.

[0181] The imaging lens system 700 may include a plurality of lenses. For example, the imaging lens system 700 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 760 arranged sequentially from the object side toward the imaging surface.

[0182] The first lens 710 may have positive refractive power and may have a convex object side surface and a convex image side surface. The second lens 720 may have negative refractive power and may have a concave object side surface and a concave image side surface. The third lens 730 may have positive refractive power and may have a convex object side surface and a concave image side surface. The fourth lens 740 may have positive refractive power and may have a convex object side surface and a convex image side surface. The fifth lens 750 may have negative refractive power and may have a concave object side surface and a concave image side surface. The sixth lens 760 may have negative refractive power and may have a convex object side surface and a concave image side surface.

[0183] The imaging lens system 700 may further include an optical filter IF and an imaging plane IP. The imaging plane IP may be formed on the image sensor IS, and the optical filter IF may be disposed between the sixth lens 760 and the imaging plane IP.

[0184] The imaging lens system 700 configured as above presents Fig.14 The aberration characteristics shown in Table 13 and Table 14 below show the lens characteristics and aspherical values ​​of the imaging lens system 700 according to the present example.

[0185] Table 13

[0186]

[0187] Table 14

[0188] Face number S1 S2 S3 S4 S5 S6 k -5.411E-01 0.000E+00 0.000E+00 -1.068E+00 -2.897E-01 2.594E+01 A 5.690E-05 1.475E-04 -5.803E-04 -1.307E-03 -1.068E-03 -1.138E-03 B 1.215E-06 2.764E-06 3.015E-05 -1.478E-07 7.167E-05 6.900E-05 C -5.773E-07 -2.564E-07 -8.956E-07 -7.952E-08 -1.949E-05 -5.355E-05 D 5.986E-08 -1.629E-08 3.136E-08 -6.664E-08 5.741E-06 2.332E-05 E -2.037E-09 -8.802E-10 -2.919E-09 1.180E-08 -1.154E-06 -5.500E-06 F -8.539E-11 0 6.715E-11 1.834E-09 1.355E-07 7.841E-07 G 1.268E-12 0 4.524E-12 -1.496E-12 -7.674E-09 -6.557E-08 H 3.958E-13 0 -2.233E-13 -8.396E-12 1.467E-10 2.898E-09 J -1.676E-14 0 0 0 6.197E-13 -5.213E-11 L 0.000E+00 0 0 0 0 0 M 0 0 0 0 0 0 N 0 0 0 0 0 0 O 0 0 0 0 0 0 P 0 0 0 0 0 0 Face number S7 S8 S9 S10 S11 S12 k -3.415E-01 1.095E+00 -1.951E+00 -9.027E-02 -8.384E+00 -7.950E+00 A 7.335E-04 5.358E-03 -1.605E-03 -8.717E-03 -2.136E-02 -1.963E-02 B -6.676E-04 -3.866E-03 1.490E-03 6.651E-03 -5.163E-04 6.752E-04 C -7.911E-05 8.069E-04 -3.426E-04 -2.252E-03 3.092E-03 1.458E-03 D 7.646E-05 3.652E-06 2.243E-04 9.070E-04 -3.116E-03 -1.450E-03 E -2.738E-05 -2.608E-05 -8.724E-05 -3.394E-04 1.983E-03 8.428E-04 F 5.951E-06 4.157E-06 1.975E-05 8.689E-05 -8.363E-04 -3.207E-04 G -7.475E-07 -3.304E-07 -2.871E-06 -1.356E-05 2.356E-04 8.100E-05 H 4.952E-08 1.962E-08 2.453E-07 1.155E-06 -4.384E-05 -1.345E-05 J -1.342E-09 -7.626E-10 -9.052E-09 -4.061E-08 5.170E-06 1.413E-06 L 0 0 0 0 -3.497E-07 -8.506E-08 M 0 0 0 0 1.032E-08 2.237E-09 N 0 0 0 0 0.000E+00 0.000E+00 O 0 0 0 0 0 0 P 0 0 0 0 0 0

[0189] Will refer to Fig.15 An imaging lens system 800 according to an eighth example of one or more embodiments is described.

[0190] The imaging lens system 800 may include a plurality of lenses. For example, the imaging lens system 800 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 860 arranged sequentially from the object side toward the imaging surface.

[0191] The first lens 810 may have positive refractive power and may have a convex object side surface and a convex image side surface. The second lens 820 may have negative refractive power and may have a concave object side surface and a concave image side surface. The third lens 830 may have positive refractive power and may have a convex object side surface and a concave image side surface. The fourth lens 840 may have positive refractive power and may have a convex object side surface and a convex image side surface. The fifth lens 850 may have negative refractive power and may have a concave object side surface and a concave image side surface. The sixth lens 860 may have negative refractive power and may have a convex object side surface and a concave image side surface.

[0192] The imaging lens system 800 may further include an optical filter IF and an imaging plane IP. The imaging plane IP may be formed on the image sensor IS, and the optical filter IF may be disposed between the sixth lens 860 and the imaging plane IP.

[0193] The imaging lens system 800 configured as above presents Fig.16 The aberration characteristics shown in Table 15 and Table 16 below show the lens characteristics and aspheric surface values ​​of the imaging lens system 800 according to the present example.

[0194] Table 15

[0195]

[0196]

[0197] Table 16

[0198]

[0199]

[0200] Will refer to Fig.17 An imaging lens system 900 according to a ninth example of one or more embodiments is described.

[0201] The imaging lens system 900 may include a plurality of lenses. For example, the imaging lens system 900 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 960 arranged sequentially from the object side toward the imaging surface.

[0202] The first lens 910 may have positive refractive power and may have a convex object side surface and a convex image side surface. The second lens 920 may have negative refractive power and may have a concave object side surface and a concave image side surface. The third lens 930 may have positive refractive power and may have a convex object side surface and a concave image side surface. The fourth lens 940 may have positive refractive power and may have a convex object side surface and a convex image side surface. The fifth lens 950 may have negative refractive power and may have a concave object side surface and a concave image side surface. The sixth lens 960 may have negative refractive power and may have a convex object side surface and a concave image side surface.

[0203] The imaging lens system 900 may further include an optical filter IF and an imaging plane IP. The imaging plane IP may be formed on the image sensor IS, and the optical filter IF may be disposed between the sixth lens 960 and the imaging plane IP.

[0204] The imaging lens system 900 configured as above presents Fig.18The aberration characteristics shown in Table 17 and Table 18 below show the lens characteristics and aspherical values ​​of the imaging lens system 900 according to the present example.

[0205] Table 17

[0206]

[0207]

[0208] Table 18

[0209]

[0210]

[0211] Will refer to Fig.19 An imaging lens system 1000 according to a tenth example of one or more embodiments is described.

[0212] The imaging lens system 1000 may include a plurality of lenses. For example, the imaging lens system 1000 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 1060 arranged sequentially from the object side toward the imaging surface.

[0213] The first lens 1010 may have positive refractive power and may have a convex object-side surface and a convex image-side surface. The second lens 1020 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The third lens 1030 may have positive refractive power and may have a convex object-side surface and a concave image-side surface. The fourth lens 1040 may have positive refractive power and may have a convex object-side surface and a convex image-side surface. The fifth lens 1050 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The sixth lens 1060 may have negative refractive power and may have a convex object-side surface and a concave image-side surface.

[0214] The imaging lens system 1000 may further include an optical filter IF and an imaging plane IP. The imaging plane IP may be formed on the image sensor IS, and the optical filter IF may be disposed between the sixth lens 1060 and the imaging plane IP.

[0215] The imaging lens system 1000 configured as above presents Fig. 20 The aberration characteristics shown in Table 19 and Table 20 below show the lens characteristics and aspherical values ​​of the imaging lens system 1000 according to the present example.

[0216] Table 19

[0217]

[0218]

[0219] Table 20

[0220]

[0221]

[0222] Will refer to Fig.21 An imaging lens system 1100 according to an eleventh example of one or more embodiments is described.

[0223] The imaging lens system 1100 may include a plurality of lenses. For example, the imaging lens system 1100 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 1160 arranged sequentially from the object side toward the imaging surface.

[0224] The first lens 1110 may have positive refractive power and may have a convex object-side surface and a convex image-side surface. The second lens 1120 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The third lens 1130 may have positive refractive power and may have a convex object-side surface and a concave image-side surface. The fourth lens 1140 may have positive refractive power and may have a convex object-side surface and a convex image-side surface. The fifth lens 1150 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The sixth lens 1160 may have negative refractive power and may have a convex object-side surface and a concave image-side surface.

[0225] The imaging lens system 1100 may further include an optical filter IF and an imaging plane IP. The imaging plane IP may be formed on the image sensor IS, and the optical filter IF may be disposed between the sixth lens 1160 and the imaging plane IP.

[0226] The imaging lens system 1100 configured as above presents Fig. 22 The aberration characteristics shown in Table 21 and Table 22 below show the lens characteristics and aspherical values ​​of the imaging lens system 1100 according to the present example.

[0227] Table 21

[0228]

[0229] Table 22

[0230]

[0231]

[0232] Will refer to Fig.23 An imaging lens system 1200 according to a twelfth example of one or more embodiments is described.

[0233] The imaging lens system 1200 may include a plurality of lenses. For example, the imaging lens system 1200 may include a first lens 1210, a second lens 1220, a third lens 1230, a fourth lens 1240, a fifth lens 1250, a sixth lens 1260, and a seventh lens 1270 arranged sequentially from the object side toward the imaging surface.

[0234] The first lens 1210 may have positive refractive power and may have a convex object side surface and a convex image side surface. The second lens 1220 may have negative refractive power and may have a concave object side surface and a concave image side surface. The third lens 1230 may have positive refractive power and may have a convex object side surface and a concave image side surface. The fourth lens 1240 may have positive refractive power and may have a convex object side surface and a convex image side surface. The fifth lens 1250 may have negative refractive power and may have a concave object side surface and a concave image side surface. The sixth lens 1260 may have negative refractive power and may have a convex object side surface and a concave image side surface. The seventh lens 1270 may have negative refractive power and may have a convex object side surface and a concave image side surface.

[0235] The imaging lens system 1200 may further include an optical filter IF and an imaging plane IP. The imaging plane IP may be formed on the image sensor IS, and the optical filter IF may be disposed between the seventh lens 1270 and the imaging plane IP.

[0236] The imaging lens system 1200 configured as above presents Fig.24 The aberration characteristics shown in Table 23 and Table 24 below show the lens characteristics and aspherical values ​​of the imaging lens system 1200 according to the present example.

[0237] Table 23

[0238]

[0239] Table 24

[0240]

[0241]

[0242] Will refer to Fig.25 An imaging lens system 1300 according to a thirteenth example of one or more embodiments is described.

[0243] The imaging lens system 1300 may include a plurality of lenses. For example, the imaging lens system 1300 may include a first lens 1310, a second lens 1320, a third lens 1330, a fourth lens 1340, a fifth lens 1350, a sixth lens 1360, and a seventh lens 1370 arranged sequentially from the object side toward the imaging surface.

[0244] The first lens 1310 may have positive refractive power and may have a convex object side surface and a convex image side surface. The second lens 1320 may have negative refractive power and may have a concave object side surface and a concave image side surface. The third lens 1330 may have positive refractive power and may have a convex object side surface and a concave image side surface. The fourth lens 1340 may have positive refractive power and may have a convex object side surface and a convex image side surface. The fifth lens 1350 may have negative refractive power and may have a concave object side surface and a concave image side surface. The sixth lens 1360 may have negative refractive power and may have a convex object side surface and a concave image side surface. The seventh lens 1370 may have negative refractive power and may have a convex object side surface and a concave image side surface.

[0245] The imaging lens system 1300 may further include an optical filter IF and an imaging plane IP. The imaging plane IP may be formed on the image sensor IS, and the optical filter IF may be disposed between the seventh lens 1370 and the imaging plane IP.

[0246] The imaging lens system 1300 configured as above presents Fig.26 The aberration characteristics shown in Table 25 and Table 26 below show the lens characteristics and aspheric surface values ​​of the imaging lens system 1300 according to the present example.

[0247] Table 25

[0248]

[0249]

[0250] Table 26

[0251]

[0252]

[0253] Table 27 shows characteristic values ​​of the imaging lens systems according to the first example to the thirteenth example.

[0254] Table 27

[0255]

[0256]

[0257] Table 28 to Table 31 below show conditional expression values ​​of the imaging lens systems according to the first example to the thirteenth example.

[0258] Table 28

[0259]

[0260] Table 29

[0261]

[0262]

[0263] Table 30

[0264]

[0265] Table 31

[0266]

[0267]

[0268] In the imaging lens systems according to the first to thirteenth examples, the lens may include a lens in which an effective radius Xc in a first direction intersecting the optical axis C is different from an effective radius Yc in a second direction intersecting the optical axis C. For example, in the imaging lens system 100 according to the first example, the first to third lenses 110 to 130 may be formed such that the effective radius Xc in the first direction intersecting the optical axis C is greater than the effective radius Yc in the second direction intersecting the optical axis C, as shown in FIG. Fig. 27 as shown in .

[0269] The imaging lens systems 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, and 1300 according to the first to thirteenth examples are configured to be easily mounted on portable terminals and small electronic devices. For example, the imaging lens systems 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, and 1300 according to the first to thirteenth examples may further include an optical path conversion device P such as Fig.28 As shown in , the optical path conversion device P can be arranged in the length direction or the width direction of the portable terminal.

[0270] According to one or more examples, an imaging lens system having high magnification and / or low f-number can be implemented.

[0271] Although the present disclosure includes specific examples, it will be apparent after understanding the disclosure of the present application that various changes in form and detail may be made to these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are understood in a descriptive sense only and not for limiting purposes. The description of the features or aspects in each example should be considered to be applicable to similar features or aspects in other examples. If the described techniques are performed in a different order, and / or if the components in the described system, architecture, device, or circuit are combined in a different manner and / or replaced or supplemented by other components or their equivalents, appropriate results can still be achieved.

[0272] Therefore, the scope of the present disclosure includes the claims and their equivalents in addition to the above disclosure and all the accompanying drawings, that is, all modifications within the scope of the claims and their equivalents should be construed as being included in the present disclosure.

Claims

1. An imaging lens system, characterized in that The imaging lens system comprises: The first lens has a refractive power; The second lens has a refractive power; A third lens having a convex object side surface; The fourth lens has a refractive power; a fifth lens having refractive power; and The sixth lens has refractive power, Wherein, the first lens to the sixth lens are arranged sequentially from the object side toward the imaging surface, and Wherein, the imaging lens system satisfies the following conditional expression: TTL / f<1.0, and 0.9 <f1 / f4<1.4, Wherein, TTL is the distance from the object side of the first lens to the imaging plane, f is the focal length of the imaging lens system, f1 is the focal length of the first lens, and f4 is the focal length of the fourth lens.

2. The imaging lens system according to claim 1, characterized in that: The first lens has a convex object-side surface.

3. The imaging lens system according to claim 1, wherein: The second lens has a concave image-side surface.

4. The imaging lens system according to claim 1, wherein: The fourth lens has a convex object-side surface.

5. The imaging lens system according to claim 1, wherein: The fifth lens has a concave object-side surface.

6. The imaging lens system according to claim 1, wherein: The following conditional expressions are met: 2.0 <TTL / BFL<3.0, Wherein, BFL is the distance from the image side surface of the last lens disposed closest to the imaging surface to the imaging surface.

7. The imaging lens system according to claim 1, wherein: The following conditional expressions are met: 0.42 <IMG HT / BFL<0.60, Wherein, IMG HT is the height of the imaging plane, and BFL is the distance from the image side surface of the last lens disposed closest to the imaging plane to the imaging plane.

8. An imaging lens system, characterized in that The imaging lens system comprises: The first lens has a refractive power; The second lens has a refractive power; The third lens has refractive power; a fourth lens having a convex image-side surface; a fifth lens having a concave object-side surface; and The sixth lens has refractive power, Wherein, the first lens to the sixth lens are arranged sequentially from the object side toward the imaging surface, wherein one or more of the first to sixth lenses are formed such that an effective radius in a first direction intersecting the optical axis is different from an effective radius in a second direction intersecting the optical axis, and Wherein, the imaging lens system satisfies the following conditional expression: TTL / f<1.0, Wherein, TTL is the distance from the object side of the first lens to the imaging plane, and f is the focal length of the imaging lens system.

9. The imaging lens system according to claim 8, characterized in that: The first lens has a convex object-side surface.

10. The imaging lens system according to claim 8, characterized in that: The second lens has a concave image-side surface.

11. The imaging lens system according to claim 8, characterized in that: The third lens has a convex object-side surface.

12. The imaging lens system according to claim 8, wherein: The sixth lens has a convex object-side surface.

13. The imaging lens system according to claim 8, wherein: The following conditional expressions are met: 0.5 <AR1<1.0, Here, AR1 is a ratio of an effective radius of the first lens in the second direction to an effective radius of the first lens in the first direction.

14. The imaging lens system according to claim 8, wherein: The following conditional expressions are met: 0<(D12+D23) / D34<0.8, Among them, D12 is the distance from the image side surface of the first lens to the object side surface of the second lens, D23 is the distance from the image side surface of the second lens to the object side surface of the third lens, and D34 is the distance from the image side surface of the third lens to the object side surface of the fourth lens.

15. The imaging lens system according to claim 8, wherein: The following conditional expressions are met: 0.3 <Xc1 / SumT<0.8, Wherein, Xc1 is the effective radius of the first lens in the first direction, and SumT is the sum of the thicknesses of all lenses disposed between the object and the imaging plane.

16. The imaging lens system according to claim 8, characterized in that: The following conditional expressions are met: 2.0 <TTL / SumT<3.0, Wherein, SumT is the sum of the thicknesses of all lenses disposed between the object and the imaging plane.

17. An imaging lens system, characterized in that The imaging lens system comprises: The first lens has a refractive power; The second lens has a refractive power; A third lens having a convex object side surface; The fourth lens has a refractive power; a fifth lens having refractive power; and The sixth lens has refractive power, Wherein, the first lens to the sixth lens are arranged sequentially from the object side toward the imaging surface, and Wherein, the imaging lens system satisfies the following conditional expression: 0.20 <D56 / BFL<0.50, Wherein, D56 is the distance from the image side surface of the fifth lens to the object side surface of the sixth lens, and BFL is the distance from the image side surface of the last lens disposed closest to the imaging surface to the imaging surface.

18. The imaging lens system according to claim 17, characterized in that: The imaging lens system also includes a seventh lens disposed on the image side of the sixth lens.

19. The imaging lens system according to claim 18, characterized in that: The seventh lens has a convex object-side surface in the paraxial region and a concave image-side surface in the paraxial region.

Images