Imaging lens systems and electronic equipment

Abstract

An imaging lens system is provided. The imaging lens system includes: a first lens having a concave object side surface; a second lens having a positive refractive power; a third lens having a refractive power; a fourth lens having a refractive power; a fifth lens having a refractive power; a sixth lens having an Abbe number greater than 20 and less than 40; and a seventh lens having a refractive power, wherein the first lens to the seventh lens are arranged in order from the object side to the imaging side, and the imaging lens system satisfies the following conditional expressions: TTL / (ImgHT×2)<0.8 and 100°<FOV, where TTL is the distance from the object side surface of the first lens to the imaging surface, ImgHT is the height of the imaging surface, and FOV is the viewing angle of the imaging lens system. An electronic device is also provided.

Description

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[0009] Cross - reference to related applications

[0002] This application claims the benefit of priority of Korean Patent Application No. 10 - 2022 - 0038054, filed on Mar. 28, 2022, 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] Portable electronic devices may include a camera module or device that captures images or videos. In an example, by way of non - limiting example, the camera module may be installed in a mobile phone, a laptop computer, a game console, etc.

[0005] The resolution and resolving power of the camera module and the resolution and resolving power of the imaging lens system may be proportional to the size of the sensor and the size of the imaging surface. In an example, in order to implement a camera module and an imaging lens system with high resolution, a sensor and an imaging surface of a relatively large size may be required. However, since the size (or length) of the camera module and the imaging lens system increases proportionally to the size of the sensor and the size of the imaging surface, it may be difficult to install such a camera module and imaging lens system with high resolution in a thin - type electronic device such as a smart phone. Summary of the invention

[0006] The present Summary section is intended to introduce, in a brief form, a selection of inventive concepts, which will be further described in the Detailed Description section below. The present Summary 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 concave object side surface; a second lens having a positive refractive power; a third lens having a refractive power; a fourth lens having a refractive power; a fifth lens having a refractive power; a sixth lens having an Abbe number greater than 20 and less than 40; and a seventh lens having a refractive power, wherein the first lens to the seventh lens are arranged in order from the object side to the imaging side, and wherein the imaging lens system satisfies the following conditional expressions: TTL / (ImgHT×2)<0.8 and 100°<FOV, where TTL is the distance from the object side surface of the first lens to the imaging surface, ImgHT is the height of the imaging surface, and FOV is the viewing angle of the imaging lens system. <00​​​The third lens may have a convex object side surface.

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

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

[0012] The sixth lens may have a convex object side surface.

[0013] The seventh lens may have a concave object side surface.

[0014] The imaging lens system may satisfy the following conditional expression: SumD / SumT < 0.9, where SumD is the sum of the air gaps between the first lens and the seventh lens, and SumT is the sum of the thicknesses of each of the first lens to the seventh lens. ​​​​​​​​​​​​​​​​​​​​​​The imaging lens system may satisfy the following conditional expression: 0.4<|f1 / f2|<1.5, where f1 is the focal length of the first lens, and f2 is the focal length of the second lens.

[0023] Other features and aspects will become apparent from the appended claims, the accompanying drawings, and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A configuration diagram of an exemplary imaging lens system according to a first example is shown.

[0025] Figure 2 Shown Figure 1 Aberration curves for an exemplary imaging lens system are shown.

[0026] Figure 3 A configuration diagram of an exemplary imaging lens system according to a second example is shown.

[0027] Figure 4 Shown Figure 3 Aberration curves for an exemplary imaging lens system are shown.

[0028] Figure 5 A configuration diagram of an exemplary imaging lens system according to a third example is shown.

[0029] Figure 6 Shown Figure 5 Aberration curves for an exemplary imaging lens system are shown.

[0030] Figure 7 A configuration diagram of an exemplary imaging lens system according to a fourth example is shown.

[0031] Figure 8 Shown Figure 7 Aberration curves for an exemplary imaging lens system are shown.

[0032] Figure 9 A configuration diagram of an exemplary imaging lens system according to a fifth example is shown.

[0033] Figure 10 Shown Figure 9 Aberration curves for an exemplary imaging lens system are shown.

[0034] Figure 11 A configuration diagram of an exemplary imaging lens system according to a sixth example is shown.

[0035] Figure 12 Shown Figure 11 Aberration curves for an exemplary imaging lens system are shown.

[0036] Figure 13A configuration diagram of an exemplary imaging lens system according to a seventh example is shown.

[0037] Figure 14 Shown Figure 13 Aberration curves for an exemplary imaging lens system are shown.

[0038] Throughout the drawings and detailed description, the same reference numerals may refer to the same or similar elements. For purposes of clarity, illustration, and convenience, the drawings may not be drawn to scale, and the relative sizes, proportions, and depictions of elements in the drawings may be exaggerated. DETAILED DESCRIPTION

[0039] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the method, device and / or system described herein. However, after understanding the disclosure of the application, various changes, modifications and equivalences of the method, device and / or system described herein will be apparent. For example, the order of operations described herein is merely an example, and except for the operations that must occur in a specific order, it is not limited to the order set forth in this article, but can be changed as will be apparent after understanding the disclosure of the application. In addition, for greater clarity and brevity, the description of features known after understanding the disclosure of the application can be omitted, but it should be noted that the omission of features and their descriptions is not intended to admit that they are common knowledge.

[0040] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided merely to illustrate some of the many possible ways of implementing the methods, devices, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0041] Although terms such as "first," "second," and "third" 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. Rather, these terms are used only to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, without departing from the teachings of the examples described herein, a first member, first component, first region, first layer, or first portion mentioned in these examples may also be referred to as a second member, second component, second region, second layer, or second portion.

[0042] Throughout this specification, when an element, such as a layer, region, or substrate, is described as being “on,” “connected to,” or “coupled to” another element, the element may be directly “on,” “connected to,” or “coupled to” the other element, or one or more other elements may be present between the element and the other element. Conversely, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, there are no other elements present between the element and the other element. Similarly, expressions such as “between” and “directly between,” as well as “adjacent to” and “directly adjacent to,” may also be interpreted as described above.

[0043] The terms used herein are only used for the purpose of describing specific examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, as used herein, the singular forms "a", "an" and "the" are intended to also include the plural forms. As used herein, the wording "and / or" includes any one of the associated listed items and any combination of any two or more items. As used herein, the words "comprise", "include" and "have" illustrate the presence of the features, numbers, operations, elements, parts and / or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, operations, elements, parts and / or combinations thereof. In this article, the wording "may" is used with respect to an example or embodiment, for example, with respect to what an example or embodiment may include or implement, meaning that there is at least one example or embodiment that includes or implements such features, and all examples or embodiments are not limited thereto.

[0044] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art after understanding the present disclosure. For example, those terms defined in commonly used dictionaries will be interpreted as having a meaning consistent with their meaning in the context of the relevant art and the present disclosure, and should not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0045] In a non-limiting example, the exemplary imaging lens system may be installed in a portable electronic device.

[0046] In one or more examples, the first lens is the lens closest to the object (or subject), and the seventh lens is the lens closest to the imaging plane (or image sensor). In one or more examples, the units of the curvature radius, thickness, TTL (the distance from the object-side surface of the first lens to the imaging plane), ImgHT (the height of the imaging plane), focal length, and effective diameter of the lens are expressed in millimeters (mm).

[0047] The thickness of the lens, the distance between lenses, and the TTL refer to the distances of the lenses along the optical axis of the imaging lens system. Additionally, in the description of the shape of a lens, a configuration where one surface is convex means that the paraxial region of that surface is convex, and a configuration where one surface is concave means that the paraxial region of that surface is concave. Thus, even when one surface of a lens is described as convex, the edge of the lens can be concave. Similarly, even when one surface of a lens is described as concave, the edge of the lens can be convex.

[0048] The imaging lens system described in one or more examples can be configured to be mounted on a portable electronic device. In an example, the imaging lens system according to one or more examples can be mounted on at least one of the camera modules provided in the front or rear of a smart phone, which is a non-limiting example. As another example, the imaging lens system according to one or more examples can be mounted on a notebook computer, an augmented reality device, a virtual reality device, a portable game console, etc., which are non-limiting examples. The scope of implementation and examples of the exemplary imaging lens system are not limited to the above-mentioned electronic devices. In an example, the imaging lens system can provide a narrow mounting space, but can also be applied to electronic devices that require high-resolution imaging.

[0049] The imaging lens system according to the first example can include multiple lenses. For example, the imaging lens system can 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 to the imaging side.

[0050] The imaging lens system according to the first example can include a lens having a concave object side surface. For example, in the imaging lens system according to the first example, the first lens can have a concave object side surface. The imaging lens system according to the first example can include a lens having a positive refractive power. For example, in the imaging lens system according to the first example, the second lens can have a positive refractive power. The imaging lens system according to the first example can include a lens having an Abbe number with a specific magnitude. For example, the imaging lens system according to the first example can include a lens having an Abbe number greater than 20 and less than 40. As a specific example, in the imaging lens system according to the first example, the Abbe number of the sixth lens can be greater than 20 and less than 40. The imaging lens system according to the first example can be configured to satisfy a predetermined conditional expression. For example, the imaging lens system according to the first example can satisfy the conditional expressions TTL / (ImgHT×2)<0.8 and 100°<FOV. For reference, in the above conditional expressions, TTL is the distance from the object side surface of the first lens to the imaging surface, ImgHT is the height of the imaging surface, and FOV is the viewing angle of the imaging lens system.

[0051] The imaging lens system according to the second example may include a plurality of lenses. For 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 order from the object side to the imaging side. The imaging lens system according to the second example may include a lens having a negative refractive power. For example, in the imaging lens system according to the second example, the first lens may have a negative refractive power. The imaging lens system according to the second example may include a lens having a positive refractive power. For example, in the imaging lens system according to the second example, the second lens and the fifth lens may have positive refractive powers, respectively. The imaging lens system according to the second example may include a lens having a convex object side surface. For example, in the imaging lens system according to the second example, each of the third lens and the sixth lens may have a convex object side surface. The imaging lens system according to the second example may include a lens having a concave object side surface. For example, in the imaging lens system according to the second example, the fourth lens may have a concave object side surface. The imaging lens system according to the second example may be configured to satisfy a predetermined conditional expression. For example, the imaging lens system according to the second example may satisfy the conditional expressions 2.8 < (V5 + V7) / V6 < 4.8 and 0.62 < TTL / (ImgHT × 2) < 0.72. As a reference, in the above conditional expressions, V5 is the Abbe number of the fifth lens, V6 is the Abbe number of the sixth lens, V7 is the Abbe number of the seventh lens, TTL is the distance from the object side surface of the first lens to the imaging surface, and ImgHT is the height of the imaging surface.

[0052] The imaging lens system according to the third example may satisfy one or more of the following conditional expressions. However, it is not only the imaging lens system according to the third example that satisfies the following conditional expressions. For example, the imaging lens systems according to the first example and the second example may satisfy one or more of the following conditional expressions:

[0053] SumD / SumT < 0.9

[0054] 0.38 < Yc72 / L72ER

[0055] -​2.0 < f6 / f < 6.0

[0056] 0.4 < |f1 / f2| < 1.5

[0057] TTL / f < 2.5

[0058] In the above conditional expressions, SumD is the sum of the air gaps between the first lens to the seventh lens, SumT is the sum of the thicknesses of the first lens to the seventh lens, Yc72 is the shortest distance from the point closest to the imaging plane on the image-side surface of the seventh lens to the optical axis, L72ER is the effective radius of the image-side surface of the seventh lens, f is the focal length of the imaging lens system, f1 is the focal length of the first lens, f2 is the focal length of the second lens, f6 is the focal length of the sixth lens, and TTL is the distance from the object-side surface of the first lens to the imaging plane.

[0059] The imaging lens system according to the fourth example may satisfy one or more of the following conditional expressions. However, not only the imaging lens system according to the fourth example satisfies the following conditional expressions. For example, the imaging lens systems according to the first to third examples may satisfy one or more of the following conditional expressions:

[0060] 0.30 <SumD / SumT<0.90

[0061] 1.8 <TTL / f<2.5

[0062] 0.8 <f3 / f<1.4

[0063] -5.0 <f4 / f<-1.0

[0064] 0.4 <f5 / f<1.4

[0065] -15 <f7 / f<-1.0

[0066] 0.2 <BFL / f<0.5

[0067] 100 <FOV<130

[0068] 0.01 <D12 / f<0.2

[0069] 0.6 <Yc62 / Yc72<1.2

[0070] In the above conditional expressions, 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, f7 is the focal length of the seventh lens, BFL is the distance from the image side surface of the seventh lens to the imaging plane, D12 is the distance from the image side surface of the first lens to the object side surface of the second lens on the optical axis, and Yc62 is the shortest distance from the point closest to the imaging plane on the image side surface of the sixth lens to the optical axis.

[0071] As desired, the exemplary imaging lens system may include one or more lenses having the following characteristics. For example, the imaging lens systems according to the first to fourth examples may include one of the first to seventh lenses having the following characteristics. As another example, the imaging lens systems according to the first to fourth examples may include two or more of the first to seventh lenses having the following characteristics. The exemplary imaging lens systems according to the above examples do not necessarily need to include lenses having the following characteristics. The characteristics of the first to seventh lenses will be described below.

[0072] In an example, the first lens may have a refractive power. The first lens may have a shape in which one of its surfaces is concave. For example, the first lens may have a concave object-side surface. The first lens may include a spherical surface or 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 workability. 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. As a specific example, the refractive index of the first lens may be greater than 1.52 and less than 1.56. The first lens may have a predetermined Abbe number. For example, the Abbe number of the first lens may be 50 or greater. As a specific example, the Abbe number of the first lens may be greater than 53 and less than 58.

[0073] In an example, the second lens may have a refractive power. The second lens may have a shape in which one of its surfaces is convex. For example, the second lens may have a convex object-side surface. The second lens may include a spherical surface or 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 workability. 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 predetermined refractive index. For example, the refractive index of the second lens may be greater than 1.5. As a specific example, the refractive index of the second lens may be greater than 1.54 and less than 1.64. The second lens may have a predetermined Abbe number. For example, the Abbe number of the second lens may be 20 or greater. As a specific example, the Abbe number of the second lens may be greater than 20 and less than 60.

[0074] In an example, the third lens may have a refractive power. The third lens may have a shape in which one of its surfaces is convex. For example, the third lens may have a convex object-side surface. The third lens may include a spherical surface or 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 workability. For example, the third lens may be formed of a plastic material or a glass material. The third lens may be configured to have a predetermined refractive index. For example, the refractive index of the third lens may be greater than 1.5. As a specific example, the refractive index of the third lens may be greater than 1.52 and less than 1.56. The third lens may have a predetermined Abbe number. For example, the Abbe number of the third lens may be 50 or greater. As a specific example, the Abbe number of the third lens may be greater than 53 and less than 58.

[0075] In an example, the fourth lens may have a refractive power. The fourth lens may have a shape in which one of its surfaces is concave. For example, the fourth lens may have a concave object-side surface. The fourth lens may include a spherical surface or 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 workability. For example, the fourth lens may be formed of a plastic material or a glass material. The fourth lens may be configured to have a predetermined refractive index. For example, the refractive index of the fourth lens may be greater than 1.6. As a specific example, the refractive index of the fourth lens may be greater than 1.65 and less than 1.70. The fourth lens may have a predetermined Abbe number. For example, the Abbe number of the fourth lens may be less than 24. As a specific example, the Abbe number of the fourth lens may be greater than 16 and less than 24.

[0076] In an example, the fifth lens may have refractive power. The fifth lens may have a shape in which one of its surfaces is convex. For example, the fifth lens may have a convex object-side surface. However, the object-side surface of the fifth lens does not necessarily have to be convex. For example, the object-side surface of the fifth lens may be concave. The fifth lens may include a spherical surface or an aspherical surface. For example, both surfaces of the fifth lens may be aspherical. The fifth lens may be formed from a material having high light transmittance and excellent workability. For example, the fifth lens may be formed from a plastic material or a glass material. The fifth lens may be configured to have a predetermined refractive index. For example, the refractive index of the fifth lens may be greater than 1.5. As a specific example, the refractive index of the fifth lens may be greater than 1.52 and less than 1.60. The fifth lens may have a predetermined Abbe number. For example, the Abbe number of the fifth lens may be greater than 50. As a specific example, the Abbe number of the fifth lens may be greater than 52 and less than 60.

[0077] In an example, the sixth lens may have refractive power. The sixth lens may have a shape in which one of its surfaces is convex. For example, the sixth lens may have a convex object-side surface. The sixth lens may include a spherical surface or an aspherical surface. For example, both surfaces of the sixth lens may be aspherical. An inflection point may be formed on one or both surfaces of the sixth lens. For example, an inflection point may be formed on the object-side surface and the image-side surface of the sixth lens. The sixth lens may be formed from a material having high light transmittance and excellent workability. For example, the sixth lens may be formed from a plastic material or a glass material. The sixth lens may be configured to have a predetermined refractive index. For example, the refractive index of the sixth lens may be greater than 1.5. As a specific example, the refractive index of the sixth lens may be greater than 1.54 and less than 1.65. The sixth lens may have a predetermined Abbe number. For example, the Abbe number of the sixth lens may be greater than 20. As a specific example, the Abbe number of the sixth lens may be greater than 20 and less than 40.

[0078] In some examples, the seventh lens may have refractive power. The seventh lens may have a shape in which one of its surfaces is concave. For example, the seventh lens may have a concave object-side surface. However, the object-side surface of the seventh lens does not necessarily have to be concave. For example, the object-side surface of the seventh lens may be convex. The seventh lens may include a spherical surface or an aspherical surface. For example, both surfaces of the seventh lens may be aspherical. An inflection point may be formed on one or both surfaces of the seventh lens. For example, an inflection point may be formed on the object-side surface and the image-side surface of the seventh lens. The seventh lens may be formed from a material having high light transmittance and excellent workability. For example, the seventh lens may be formed from a plastic material or a glass material. The seventh lens may be configured to have a predetermined refractive index. For example, the refractive index of the seventh lens may be greater than 1.5. As a specific example, the refractive index of the seventh lens may be greater than 1.52 and less than 1.57. The seventh lens may have a predetermined Abbe number. For example, the Abbe number of the seventh lens may be greater than 60. As a specific example, the Abbe number of the seventh lens may be greater than 60 and less than 70.

[0079] As described above, the first to seventh lenses may include spherical surfaces or aspherical surfaces. When the first to seventh lenses include aspherical surfaces, the aspherical surfaces of the corresponding lenses may be expressed by the following equation 1:

[0080] Equation 1:

[0081]

[0082] In Equation 1, c is the inverse of the radius of curvature of the corresponding lens, K is the conic constant, r is the distance from any point on the aspherical surface to the optical axis, A to P are aspherical surface 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.

[0083] The imaging lens system according to the above-described embodiments or examples may further include an aperture and a filter. In the examples, the imaging lens system may further include an aperture disposed between the second lens and the third lens. In the examples, the imaging lens system may further include a filter disposed between the seventh lens and the imaging surface. The aperture may be configured to adjust the amount of light incident in the direction of the imaging surface, and the filter may be configured to block light of a specific wavelength. For reference, the filter described in one or more examples may be configured to block infrared light, but the wavelengths of light blocked by the filter are not limited to infrared light.

[0084] Hereinafter, one or more examples of an imaging lens system will be described with reference to the accompanying drawings.

[0085] Will refer to Figure 1 An exemplary imaging lens system according to a first example is described.

[0086] Reference Figure 1 , the exemplary 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 , a sixth lens 160 , and a seventh lens 170 .

[0087] In an example, the first lens 110 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The second lens 120 may have positive refractive power and may have a convex 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 convex image-side surface. The fourth lens 140 may have negative refractive power and may have a concave object-side surface and a convex image-side surface. The fifth lens 150 may have positive refractive power and may have a convex object-side surface and a convex image-side surface. The sixth lens 160 may have positive refractive power and may have a convex object-side surface and a concave image-side surface. In addition, an inflection point may be formed on the object-side surface and the image-side surface of the sixth lens 160. The seventh lens 170 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. In addition, an inflection point may be formed on the object-side surface and the image-side surface of the seventh lens 170.

[0088] The imaging lens system 100 may further include an optical filter IF and an imaging surface IP. The optical filter IF may be disposed between the seventh lens 170 and the imaging surface IP. The imaging surface IP may be formed at a location where light incident from the first lens 110 to the seventh lens 170 is focused. For example, the imaging surface IP may be formed on a surface of the image sensor IS of the camera module, or within the image sensor IS.

[0089] The imaging lens system 100 configured as described above can exhibit Figure 2 Tables 1 and 2 show the lens characteristics and aspheric values ​​of the imaging lens system according to this example.

[0090] Table 1

[0091] Face number part Radius of curvature Thickness / distance Refractive index Abbe number Effective radius S1 First lens -5.7836 0.2835 1.5441 56.1 2.1225 S2 6.2372 0.2110 1.8468 S3 Second lens 2.2167 0.3777 1.6144 25.9 1.5134 S4 3.3683 0.5913 1.0854 S5 aperture infinity 0.1000 0.8000 S6 The third lens 7.8935 0.7994 1.5441 56.1 0.9995 S7 -2.6026 0.6023 1.1897 S8 Fourth lens -3.7595 0.2800 1.6707 19.2 1.3630 S9 -16.3450 0.1213 1.8300 S10 Fifth lens 1000.00 0.9027 1.5441 56.1 1.8424 S11 -2.4288 0.5205 2.0300 S12 Sixth lens 1.3088 0.3105 1.6349 23.9 2.5836 S13 1.3823 0.5630 3.1117 S14 Seventh lens -3.5090 0.2000 1.5350 55.7 3.6445 S15 6.0000 0.3500 3.8282 S16 filter infinity 0.2100 1.5168 64.2 4.5473 S17 infinity 0.8185 4.6351 S18 Imaging surface infinity 0.0300 5.2579

[0092] Table 2

[0093]

[0094]

[0095] Will refer to Figure 3 An exemplary imaging lens system according to the second example is described.

[0096] Exemplary 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 , a sixth lens 260 , and a seventh lens 270 .

[0097] In an example, the first lens 210 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The second lens 220 may have positive refractive power and may have a convex 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 convex image-side surface. The fourth lens 240 may have negative refractive power and may have a concave object-side surface and a convex image-side surface. The fifth lens 250 may have positive refractive power and may have a concave object-side surface and a convex 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. In addition, an inflection point may be formed on the object-side surface and the image-side surface of the sixth lens 260. The seventh lens 270 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. In addition, an inflection point may be formed on the object-side surface and the image-side surface of the seventh lens 270.

[0098] The imaging lens system 200 may further include an optical filter IF and an imaging plane IP. In some examples, the optical filter IF may be disposed between the seventh lens 270 and the imaging plane IP. The imaging plane IP may be formed at a location where light incident from the first lens 210 to the seventh lens 270 is focused. For example, the imaging plane IP may be formed on a surface of the image sensor IS of the camera module, or within the image sensor IS.

[0099] The imaging lens system 200 configured as described above can exhibit Figure 4 Tables 3 and 4 below show the lens characteristics and aspherical values ​​of the imaging lens system according to this example.

[0100] Table 3

[0101] Face number part Radius of curvature Thickness / distance Refractive index Abbe number Effective radius S1 First lens -5.0652 0.3292 1.5441 56.1 2.0400 S2 7.8224 0.1770 1.7290 S3 Second lens 2.1774 0.2300 1.5441 56.1 1.3336 S4 3.5041 0.5260 1.0633 S5 aperture infinity 0.1000 0.8000 S6 The third lens 10.1354 0.7501 1.5441 56.1 0.9896 S7 -2.5867 0.6768 1.1771 S8 Fourth lens -3.4908 0.2775 1.6707 19.2 1.3831 S9 -12.9494 0.0585 1.8300 S10 Fifth lens -14.9636 0.8839 1.5441 56.1 1.8683 S11 -2.1614 0.4452 2.0000 S12 Sixth lens 1.4245 0.4517 1.6349 23.9 2.4353 S13 1.4481 0.4899 3.1296 S14 Seventh lens -6.3803 0.3600 1.5350 55.7 4.1678 S15 4.6486 0.3500 4.3993 S16 filter infinity 0.2100 1.5168 64.2 4.6595 S17 infinity 0.8442 4.7353 S18 Imaging surface infinity 0.0300 5.2614

[0102] Table 4:

[0103] Face number S1 S2 S3 S4 S6 S7 S8 K -78.3332 -2.9935 -2.0260 8.6825 -34.0468 3.2586 3.9416 A 0.0912 0.1143 -0.0023 -0.0956 -0.0058 0.1499 0.0243 B -0.0268 -0.0396 -0.8348 0.0715 0.1536 -2.1756 -0.3517 C -0.0445 -0.0678 6.3209 7.6461 -0.7657 16.3552 -0.4798 D 0.1157 0.2282 -27.2543 -88.7376 -0.3980 -78.2398 8.4642 E -0.1466 -0.5872 77.5251 544.0284 22.6730 252.4886 -35.0700 F 0.1209 1.0334 -154.7608 -2151.8841 -127.2656 -569.8487 84.4442 G -0.0687 -1.1914 223.1808 5875.9200 395.0963 918.9624 -135.5891 H 0.0275 0.9205 -235.0556 -11404.7205 -798.1125 -1069.9189 152.4008 J -0.0077 -0.4862 180.4968 15883.0820 1100.9790 899.3798 -121.9676 L 0.0015 0.1763 -99.6907 -15772.7243 -1046.5920 -539.6377 69.3078 M -0.0002 -0.0432 38.4774 10903.9768 673.9801 224.9525 -27.3432 N 0.0000 0.0068 -9.8301 -4986.1679 -280.3691 -61.7913 7.1197 O 0.0000 -0.0006 1.4910 1355.4220 67.8617 10.0414 -1.0996 P 0.0000 0.0000 -0.1015 -165.7968 -7.2473 -0.7304 0.0762 Face number S9 S10 S11 S12 S13 S14 S15 K 49.1829 -99.0000 -0.9399 -7.3326 -3.8666 -64.5384 -43.3537 A 0.2146 0.1690 -0.1845 -0.0965 -0.1439 -0.0270 -0.0007 B -1.0522 -0.5341 0.2218 -0.0085 0.0459 0.0150 -0.0004 C 2.3464 0.8384 -0.0596 -0.0093 0.0162 -0.0045 0.0000 D -3.1870 -0.7463 -0.2970 0.0952 -0.0315 0.0011 0.0000 E 1.9662 0.0182 0.5941 -0.1424 0.0198 -0.0003 0.0000 F 1.2629 0.8642 -0.6069 0.1101 -0.0073 0.0000 0.0000 G -4.0308 -1.1677 0.3959 -0.0528 0.0018 0.0000 0.0000 H 4.3694 0.8529 -0.1743 0.0167 -0.0003 0.0000 0.0000 J -2.8767 -0.4016 0.0528 -0.0036 0.0000 0.0000 0.0000 L 1.2623 0.1275 -0.0110 0.0005 0.0000 0.0000 0.0000 M -0.3729 -0.0272 0.0016 0.0000 0.0000 0.0000 0.0000 N 0.0715 0.0038 -0.0001 0.0000 0.0000 0.0000 0.0000 O -0.0081 -0.0003 0.0000 0.0000 0.0000 0.0000 0.0000 P 0.0004 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

[0104] Will refer to Figure 5 An exemplary imaging lens system according to a third example is described.

[0105] The exemplary 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 , a sixth lens 360 , and a seventh lens 370 .

[0106] In an example, the first lens 310 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The second lens 320 may have positive 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 convex image-side surface. The fourth lens 340 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The fifth lens 350 may have positive refractive power and may have a convex object-side surface and a convex 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. In addition, an inflection point may be formed on the object-side surface and the image-side surface of the sixth lens 360. The seventh lens 370 may have negative refractive power and may have a convex object-side surface and a concave image-side surface. In addition, an inflection point may be formed on the object-side surface and the image-side surface of the seventh lens 370.

[0107] The imaging lens system 300 may further include an optical filter IF and an imaging plane IP. The optical filter IF may be disposed between the seventh lens 370 and the imaging plane IP. The imaging plane IP may be formed at a location where light incident from the first lens 310 to the seventh lens 370 is focused. For example, the imaging plane IP may be formed on a surface of the image sensor IS of the camera module or within the image sensor IS.

[0108] The imaging lens system 300 configured as above can present Figure 6 Tables 5 and 6 show the lens characteristics and aspheric values ​​of the imaging lens system according to this example.

[0109] Table 5

[0110]

[0111]

[0112] Table 6

[0113] Face number S1 S2 S3 S4 S6 S7 S8 K -60.2046 55.3146 -3.2942 1.5474 -85.7565 3.5259 12.3795 A 0.0816 0.0932 0.0901 0.0038 0.0059 -0.0543 -0.1704 B -0.0602 -0.1538 -0.1325 0.0920 -0.0082 -0.0763 0.3170 C 0.0413 0.1929 0.2984 -0.4114 0.0013 0.6460 -1.9970 D -0.0229 -0.1954 -0.6112 1.2271 -0.0111 -3.4048 7.9264 E 0.0098 0.1553 0.8422 -2.7620 0.0013 11.6070 -20.3864 F -0.0031 -0.0940 -0.7711 4.5465 0.0067 -27.2988 35.8266 G 0.0007 0.0428 0.4830 -5.4285 -0.0050 45.8690 -44.3994 H -0.0001 -0.0145 -0.2108 4.7685 0.0018 -55.9388 39.5288 J 0.0000 0.0037 0.0645 -3.0819 -0.0004 49.5870 -25.4321 L 0.0000 -0.0007 -0.0137 1.4366 0.0001 -31.5850 11.7306 M 0.0000 0.0001 0.0020 -0.4653 0.0000 14.0635 -3.7816 N 0.0000 0.0000 -0.0002 0.0986 0.0000 -4.1489 0.8083 O 0.0000 0.0000 0.0000 -0.0122 0.0000 0.7275 -0.1028 P 0.0000 0.0000 0.0000 0.0007 0.0000 -0.0573 0.0059 Face number S9 S10 S11 S12 S13 S14 S15 K 99.0000 99.0000 -1.1174 -19.8893 -6.6924 -74.7454 -8.4635 A -0.1213 -0.0112 0.0414 0.0305 0.0441 -0.0435 -0.0187 B -0.0466 -0.2053 0.0520 -0.0324 -0.0361 0.0109 0.0010 C 0.1526 0.6068 -0.1910 0.0093 0.0108 -0.0021 0.0000 D 0.0420 -0.9216 0.3053 -0.0029 -0.0015 0.0003 0.0000 E -0.5322 0.9057 -0.3079 0.0012 -0.0001 0.0000 0.0000 F 0.8929 -0.6266 0.2149 -0.0005 0.0001 0.0000 0.0000 G -0.8187 0.3171 -0.1074 0.0001 0.0000 0.0000 0.0000 H 0.4833 -0.1191 0.0388 0.0000 0.0000 0.0000 0.0000 J -0.1939 0.0331 -0.0100 0.0000 0.0000 0.0000 0.0000 L 0.0536 -0.0067 0.0018 0.0000 0.0000 0.0000 0.0000 M -0.0101 0.0010 -0.0002 0.0000 0.0000 0.0000 0.0000 N 0.0012 -0.0001 0.0000 0.0000 0.0000 0.0000 0.0000 O -0.0001 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 P 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

[0114] Will refer to Figure 7 An exemplary imaging lens system according to a fourth example is described.

[0115] Exemplary 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 , a sixth lens 460 , and a seventh lens 470 .

[0116] In an example, the first lens 410 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The second lens 420 may have positive 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 convex image-side surface. The fourth lens 440 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The fifth lens 450 may have positive refractive power and may have a concave object-side surface and a convex 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. In addition, an inflection point may be formed on the object-side surface and the image-side surface of the sixth lens 460. The seventh lens 470 may have negative refractive power and may have a convex object-side surface and a concave image-side surface. In addition, an inflection point may be formed on the object-side surface and the image-side surface of the seventh lens 470.

[0117] The imaging lens system 400 may further include an optical filter IF and an imaging plane IP. The optical filter IF may be disposed between the seventh lens 470 and the imaging plane IP. The imaging plane IP may be formed at a location where light incident from the first lens 410 to the seventh lens 470 is focused. For example, the imaging plane IP may be formed on a surface of the image sensor IS of the camera module or within the image sensor IS.

[0118] The imaging lens system 400 configured as described above can exhibit Figure 8 The following Tables 7 and 8 show the lens characteristics and aspherical values ​​of the imaging lens system according to this example.

[0119] Table 7

[0120]

[0121]

[0122] Table 8

[0123] Face number S1 S2 S3 S4 S6 S7 S8 K -59.9009 43.9925 -3.8006 2.7003 44.5804 1.9778 4.0515 A 0.0722 0.1433 0.1459 0.0000 -0.0062 -0.0493 -0.2894 B -0.0465 -0.2558 -0.2686 -0.0047 -0.0029 -0.0874 0.8848 C 0.0284 0.3616 0.4640 0.0064 -0.0137 0.7996 -3.7181 D -0.0141 -0.4175 -0.7542 -0.2230 0.0150 -4.0213 11.4592 E 0.0052 0.3698 0.8294 0.2064 -0.0120 12.5494 -25.6384 F -0.0014 -0.2441 -0.5971 0.8577 0.0071 -25.9233 43.1046 G 0.0003 0.1191 0.2922 -2.7173 -0.0028 36.3952 -54.8988 H 0.0000 -0.0428 -0.0998 3.7676 0.0007 -34.6942 52.6184 J 0.0000 0.0113 0.0240 -3.0895 -0.0001 21.6140 -37.4218 L 0.0000 -0.0021 -0.0040 1.6084 0.0000 -7.7179 19.3228 M 0.0000 0.0003 0.0005 -0.5378 0.0000 0.6704 -7.0004 N 0.0000 0.0000 0.0000 0.1120 0.0000 0.6379 1.6796 O 0.0000 0.0000 0.0000 -0.0133 0.0000 -0.2626 -0.2389 P 0.0000 0.0000 0.0000 0.0007 0.0000 0.0330 0.0152 Face number S9 S10 S11 S12 S13 S14 S15 K -98.0709 91.1133 -1.0202 -42.6696 -11.2025 -99.0000 -10.8419 A -0.4837 -0.3583 0.0978 0.0982 0.0425 -0.0690 -0.0201 B 1.7306 1.5691 0.0124 -0.1059 -0.0322 0.0277 0.0015 C -4.6741 -3.8989 -0.1591 0.0519 0.0102 -0.0070 0.0000 D 8.1815 6.0012 0.2603 -0.0167 -0.0019 0.0012 0.0000 E -9.6118 -6.1610 -0.2836 0.0036 0.0002 -0.0001 0.0000 F 7.9120 4.4163 0.2292 -0.0005 0.0000 0.0000 0.0000 G -4.6828 -2.2691 -0.1348 0.0001 0.0000 0.0000 0.0000 H 2.0151 0.8456 0.0563 0.0000 0.0000 0.0000 0.0000 J -0.6299 -0.2285 -0.0165 0.0000 0.0000 0.0000 0.0000 L 0.1412 0.0442 0.0033 0.0000 0.0000 0.0000 0.0000 M -0.0221 -0.0060 -0.0005 0.0000 0.0000 0.0000 0.0000 N 0.0023 0.0005 0.0000 0.0000 0.0000 0.0000 0.0000 O -0.0001 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 P 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

[0124] Will refer to Figure 9 An exemplary imaging lens system according to a fifth example is described.

[0125] Exemplary 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 , a sixth lens 560 , and a seventh lens 570 .

[0126] The first lens 510 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The second lens 520 may have positive 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 convex image-side surface. The fourth lens 540 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The fifth lens 550 may have positive refractive power and may have a concave object-side surface and a convex 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. In addition, an inflection point may be formed on the object-side surface and the image-side surface of the sixth lens 560. The seventh lens 570 may have negative refractive power and may have a convex object-side surface and a concave image-side surface. In addition, an inflection point may be formed on the object-side surface and the image-side surface of the seventh lens 570.

[0127] The imaging lens system 500 may further include an optical filter IF and an imaging plane IP. The optical filter IF may be disposed between the seventh lens 570 and the imaging plane IP. The imaging plane IP may be formed at a location where light incident from the first lens 510 to the seventh lens 570 is focused. For example, the imaging plane IP may be formed on a surface of the image sensor IS of the camera module, or within the image sensor IS.

[0128] The imaging lens system 500 configured as described above can exhibit Figure 10 Tables 9 and 10 show the lens characteristics and aspherical values ​​of the imaging lens system according to this example.

[0129] Table 9

[0130]

[0131]

[0132] Table 10

[0133]

[0134]

[0135] Will refer to Figure 11 An exemplary imaging lens system according to a sixth example is described.

[0136] Exemplary 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 , a sixth lens 660 , and a seventh lens 670 .

[0137] The first lens 610 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The second lens 620 may have positive 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 convex image-side surface. The fourth lens 640 may have negative refractive power and may have a concave object-side surface and a convex image-side surface. The fifth lens 650 may have positive refractive power and may have a concave object-side surface and a convex 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. In addition, an inflection point may be formed on the object-side surface and the image-side surface of the sixth lens 660. The seventh lens 670 may have negative refractive power and may have a convex object-side surface and a concave image-side surface. In addition, an inflection point may be formed on the object-side surface and the image-side surface of the seventh lens 670.

[0138] The imaging lens system 600 may further include an optical filter IF and an imaging plane IP. The optical filter IF may be disposed between the seventh lens 670 and the imaging plane IP. The imaging plane IP may be formed at a location where light incident from the first lens 610 to the seventh lens 670 is focused. For example, the imaging plane IP may be formed on a surface of the image sensor IS of the camera module, or within the image sensor IS.

[0139] The imaging lens system 600 configured as described above can exhibit Figure 12 The following Tables 11 and 12 show the lens characteristics and aspherical values ​​of the imaging lens system according to this example.

[0140] Table 11

[0141]

[0142]

[0143] Table 12

[0144]

[0145]

[0146] Will refer to Figure 13 An exemplary imaging lens system according to a seventh example is described.

[0147] Exemplary 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 , a sixth lens 760 , and a seventh lens 770 .

[0148] In an example, the first lens 710 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The second lens 720 may have positive refractive power and may have a convex 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 convex image-side surface. The fourth lens 740 may have negative refractive power and may have a concave object-side surface and a convex image-side surface. The fifth lens 750 may have positive refractive power and may have a concave object-side surface and a convex 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. In addition, an inflection point may be formed on the object-side surface and the image-side surface of the sixth lens 760. The seventh lens 770 may have negative refractive power and may have a convex object-side surface and a concave image-side surface. In addition, an inflection point may be formed on the object-side surface and the image-side surface of the seventh lens 770.

[0149] The imaging lens system 700 may further include an optical filter IF and an imaging plane IP. The optical filter IF may be disposed between the seventh lens 770 and the imaging plane IP. The imaging plane IP may be formed at a location where light incident from the first lens 710 to the seventh lens 770 is focused. For example, the imaging plane IP may be formed on a surface of the image sensor IS of the camera module, or within the image sensor IS.

[0150] The imaging lens system 700 configured as described above can exhibit Figure 14 Tables 13 and 14 below show the lens characteristics and aspherical values ​​of the imaging lens system according to this example.

[0151] Table 13

[0152] Face number part Radius of curvature Thickness / distance Refractive index Abbe number Effective radius S1 First lens -4.0861 0.4652 1.5458 56.0 2.4600 S2 14.8764 0.3630 1.9555 S3 Second lens 1.7751 0.3917 1.5458 56.0 1.2877 S4 2.3978 0.3404 0.9000 S5 aperture infinity 0.1100 0.7200 S6 The third lens 6.4444 0.9111 1.5458 56.0 1.0542 S7 -2.2855 0.3600 1.2181 S8 Fourth lens -7.6898 0.3300 1.6769 19.2 1.3609 S9 -312.52 0.1299 1.7300 S10 Fifth lens -2.7448 1.1499 1.5458 56.0 1.8009 S11 -1.1057 0.0300 2.0823 S12 Sixth lens 1.4011 0.4500 1.5699 37.4 2.9046 S13 0.7860 0.3606 3.6035 S14 Seventh lens 6.0000 0.4700 1.5458 56.0 3.8600 S15 4.5741 0.4281 4.1473 S16 filter infinity 0.2100 1.5168 64.2 4.6450 S17 infinity 0.6450 4.7331 S18 Imaging surface infinity 0.0250 5.2232

[0153] Table 14

[0154]

[0155]

[0156] Table 15 and Table 16 show optical characteristic values ​​and conditional expression values ​​of the imaging lens systems according to the first to seventh examples.

[0157] Table 15

[0158] First example Second example Third example Fourth Example Fifth Example Sixth Example Example 7 f1 -5.4699 -5.6001 -7.6162 -7.2974 -6.4643 -6.5705 -5.8229 f2 9.3805 9.9612 7.7815 6.8103 9.3863 6.9532 10.2477 f3 3.6964 3.8678 4.6700 4.1631 3.2015 3.6854 3.2095 f4 -7.3449 -7.2101 -7.2563 -5.4602 -8.1463 -6.8503 -11.6512 f5 4.4544 4.5327 2.4613 2.5083 2.5258 2.5293 2.7190 f6 14.6810 16.3231 -5.9383 -6.2328 -4.4596 -4.3412 -4.2782 f7 -4.1082 -4.9698 -5.2059 -5.3263 -12.7955 -13.4289 -39.9088 TTL 7.2719 7.1900 7.1290 7.1290 7.1290 7.1290 7.1700 BFL 1.4085 1.4342 1.1066 1.2642 1.0723 1.1888 1.3081 f 3.6642 3.5884 3.7058 3.8625 3.1441 3.5434 2.8995 f-number 1.9696 1.9696 1.9696 1.9696 1.9696 1.9696 1.9696 ImgHT 5.1200 5.1200 5.1200 5.1200 5.1200 5.1200 5.1200 FOV 113.8000 113.8000 114.0800 112.0000 121.2000 111.8000 121.9600 Yc62 1.0199 1.2345 2.1285 2.0785 2.1925 2.1054 2.1042 Yc72 1.4645 2.5600 1.8535 1.7870 2.6690 2.3050 2.4500

[0159] Table 16

[0160]

[0161]

[0162] An imaging lens system according to one or more examples may be mounted in a thin portable electronic device while achieving high resolving power and high resolution.

[0163] Although this disclosure includes specific examples, it will be apparent to those skilled in the art after understanding the disclosure of this 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 to be understood in a descriptive sense only and not for purposes of limitation. The description of features or aspects in each example should be considered applicable to similar features or aspects in other examples. Appropriate results may still be achieved if the described techniques are performed to have components in a different order, and / or if they are combined in a different manner and / or replaced or supplemented by other components or their equivalents in the described systems, architectures, devices, or circuits.

[0164] Therefore, the scope of the disclosure is defined not by the detailed description, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents are to be construed as being included in the disclosure.

Claims

1. Imaging lens system, including: A first lens element having negative refractive power and a concave object-side surface; a second lens element having positive refractive power and a convex object-side surface; The third lens has positive refractive power; a fourth lens element having negative refractive power and a concave object-side surface; a fifth lens element having positive refractive power; a sixth lens having an Abbe number greater than 20 and less than 40; as well as The seventh lens has negative refractive power. Wherein, the first lens to the seventh lens are arranged sequentially from the object side to the image side, Wherein, the imaging lens system satisfies the following conditional expression: TTL / (ImgHT×2) < 0.8, 100° < FOV, 2.8 < (V5+V7) / V6 < 4.8, and 0.38 < Yc72 / L72ER ≤ 0.6219, Wherein, TTL is the distance from the object-side surface of the first lens to the imaging surface, ImgHT is the height of the imaging surface, FOV is the viewing angle of the imaging lens system, V5 is the Abbe number of the fifth lens, V6 is the Abbe number of the sixth lens, V7 is the Abbe number of the seventh lens, Yc72 is the shortest distance from the point on the image-side surface of the seventh lens closest to the imaging surface to the optical axis, and L72ER is the effective radius of the image-side surface of the seventh lens, and The imaging lens system has a total of seven lenses.

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

3. The imaging lens system according to claim 1, wherein: The fifth lens element has a convex object-side surface.

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

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

6. The imaging lens system according to claim 1 , further satisfying the following conditional expression: SumD / SumT < 0.9, in, SumD is the sum of air spaces between the first to seventh lenses, and SumT is the sum of thicknesses of each of the first to seventh lenses.

7. Imaging lens system, comprising: A first lens element having negative refractive power and a concave object-side surface; a second lens element having positive refractive power and a convex object-side surface; a third lens element having positive refractive power and a convex object-side surface; a fourth lens element having negative refractive power and a concave object-side surface; a fifth lens element having positive refractive power; a sixth lens having a convex object-side surface; as well as The seventh lens has negative refractive power. Wherein, the first lens to the seventh lens are arranged sequentially from the object side to the image side, Wherein, the imaging lens system satisfies the following conditional expression: 2.8 < (V5+V7) / V6 < 4.8, 0.62 < TTL / (ImgHT×2) < 0.72, and 0.38 < Yc72 / L72ER ≤ 0.6219, Wherein, V5 is the Abbe number of the fifth lens, V6 is the Abbe number of the sixth lens, V7 is the Abbe number of the seventh lens, TTL is the distance from the object side surface of the first lens to the imaging plane, ImgHT is the height of the imaging plane, Yc72 is the shortest distance from the point on the image side surface of the seventh lens closest to the imaging plane to the optical axis, and L72ER is the effective radius of the image side surface of the seventh lens, and The imaging lens system has a total of seven lenses.

8. The imaging lens system according to claim 7, wherein: The fifth lens element has a concave object-side surface.

9. The imaging lens system according to claim 7, wherein: The seventh lens element has a convex object-side surface.

10. The imaging lens system according to claim 7, further satisfying the following conditional expression: -2.0 < f6 / f < 6.0, in, f is the focal length of the imaging lens system, and f6 is the focal length of the sixth lens.

11. The imaging lens system according to claim 7, further satisfying the following conditional expression: 0.4 < |f1 / f2| < 1.5, in, f1 is the focal length of the first lens, and f2 is the focal length of the second lens.

12. An electronic device comprising the imaging lens system according to claim 1 or 7.

Images