Imaging lens system and electronic device

Abstract

An imaging lens system is provided. The imaging lens system includes: a first lens group including one or more lenses; and a second lens group including one or more lenses and configured to be movable in the optical axis direction. The first lens group and the second lens group are arranged in this order from the object side toward the imaging plane. The imaging lens system satisfies a conditional expression TTL / (IMG HT * 2) lt; wherein TTL is the distance from the object side of the foremost lens disposed closest to the object to the imaging plane, and IMG HT is the height of the imaging plane. The utility model further provides an electronic device.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority from Korean Patent Application No. 10-2023-0154657 filed on November 9, 2023, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety for all purposes by reference. Technical Field

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

[0004] Portable electronic devices include camera modules that capture still images or record moving images.

[0005] For example, a camera module may be mounted on a portable electronic device such as, but not limited to, a mobile phone, a laptop computer, or a game console. Such portable electronic devices are typically manufactured to be compact or small in size to increase user convenience when carrying these devices. Consequently, the camera module mounted on the portable electronic device is configured with an imaging lens system having a limited form factor. For example, a camera module may include an imaging lens system with a fixed focal length. Consequently, the imaging lens system of such a camera module can only capture images of objects within a specific range (e.g., close or far distances) and may have difficulty capturing images of objects outside of this range. Utility Model Content

[0006] This Summary is provided to introduce a selection of concepts in a concise form, and these concepts will be further described in the Detailed Description below. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

[0007] In general, an imaging lens system includes: a first lens group including one or more lenses; and a second lens group including one or more lenses and configured to be movable in an optical axis direction, wherein the first lens group and the second lens group are arranged sequentially from the object side toward an imaging plane, and wherein the imaging lens system satisfies the following conditional expression: TTL / (IMG HT×2) < 0.850, wherein TTL is a distance from an object-side surface of a frontmost lens disposed closest to an object to the imaging plane, and IMG HT is a height of the imaging plane.

[0008] The frontmost lens may have a convex image-side surface.

[0009] A rear lens in the first lens group that is disposed closest to the second lens group may have a convex image-side surface.

[0010] A front lens in the second lens group, which is disposed closest to the first lens group, may have a concave object-side surface.

[0011] The last lens disposed closest to the imaging plane may have a concave image-side surface.

[0012] fG1 / fG1F < 1.10, where fG1 is the focal length of the first lens group, and fG1F is the focal length of the front lens.

[0013] fG2 / fG2F < 1.0, where fG2 is the focal length of the second lens group, and fG2F is the focal length of the lens in the second lens group that is disposed closest to the object.

[0014] fG1 / f < 0.550, where fG1 is the focal length of the first lens group, and f is the focal length of the imaging lens system.

[0015] In general, the imaging lens system includes 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 plane, wherein the first lens has a convex image side surface, and wherein -1.2 < f1 / f4 < -0.40, wherein f1 is the focal length of the first lens, and f4 is the focal length of the fourth lens.

[0016] The first lens may have a convex object-side surface.

[0017] The second lens may have a concave image-side surface.

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

[0019] The fourth lens may have a concave object-side surface.

[0020] The fifth lens may have a convex image-side surface.

[0021] The imaging lens system may further include a seventh lens disposed on the image side of the sixth lens.

[0022] The seventh lens may have a concave image-side surface.

[0023] In general, an electronic device includes an imaging lens system, which includes 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 plane, wherein the imaging lens system satisfies the following conditional expression: TTL / (IMG HT×2) < 0.850, wherein TTL is the distance from the object side of the frontmost lens set closest to the object to the imaging plane, and IMG HT is the height of the imaging plane.

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

[0025] Other features and aspects will be apparent from the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A configuration diagram of an exemplary imaging lens system according to the first embodiment is shown.

[0027] Figure 2 Shown Figure 1 Aberration curves of the exemplary imaging lens system shown in .

[0028] Figure 3 A configuration diagram of an exemplary imaging lens system according to the second embodiment is shown.

[0029] Figure 4 Shown Figure 3 Aberration curves of the exemplary imaging lens system shown in .

[0030] Figure 5 A configuration diagram of an exemplary imaging lens system according to a third embodiment is shown.

[0031] Figure 6 Shown Figure 5 Aberration curves of the exemplary imaging lens system shown in .

[0032] Figure 7 A configuration diagram of an exemplary imaging lens system according to a fourth embodiment is shown.

[0033] Figure 8 Shown Figure 7 Aberration curves of the exemplary imaging lens system shown in .

[0034] Figure 9 A configuration diagram of an exemplary imaging lens system according to a fifth embodiment is shown.

[0035] Figure 10 Shown Figure 9 Aberration curves of the exemplary imaging lens system shown in .

[0036] Figure 11 A configuration diagram of an exemplary imaging lens system according to a sixth embodiment is shown.

[0037] Figure 12 Shown Figure 10 Aberration curves of the exemplary imaging lens system shown in .

[0038] Figure 13 A configuration diagram of an exemplary imaging lens system according to a seventh embodiment is shown.

[0039] Figure 14 Shown Figure 13 Aberration curves of the exemplary imaging lens system shown in .

[0040] Figure 15 A configuration diagram of an exemplary imaging lens system according to an eighth embodiment is shown.

[0041] Figure 16 Shown Figure 15 Aberration curves of the exemplary imaging lens system shown in .

[0042] Figure 17 Another form of the exemplary imaging lens system according to the first to eighth embodiments is shown.

[0043] Figure 18 Exemplary electronic devices including the exemplary imaging lens systems according to the first to eighth embodiments are shown.

[0044] 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

[0045] The following specific embodiments are provided to help the reader gain a comprehensive understanding of the methods, devices and / or systems described herein. However, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent after understanding the disclosure of the present application. For example, the order in the operations described herein and / or the order of the operations described herein are merely examples, and are not limited to the order set forth herein, except for the order in the operations and / or the order of operations that must occur in a specific sequence, but may be changed, as will be apparent after understanding the disclosure of the present application. As another example, except for at least a portion of the order in the operations and / or the order of operations that must occur in a sequence (e.g., a specific sequence), the order of operations and / or the order in the operations may be performed in parallel. In addition, for greater clarity and brevity, descriptions of features known after understanding the disclosure of the present application may be omitted.

[0046] 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 intended to limit, for example, the importance, sequence, or order of the corresponding member, component, region, layer, or portion, but is merely used to distinguish the corresponding member, component, region, layer, or portion from other members, components, regions, layers, or portions. Thus, a first member, first component, first region, first layer, or first portion mentioned in these examples could also be referred to as a second member, second component, second region, second layer, or second portion without departing from the teachings of the examples described herein.

[0047] Throughout this specification, when a component, element, or layer is described as being “on,” “connected to,” “coupled to,” or “engaged to” another component, element, or layer, it may be directly “on,” directly “connected to,” “coupled to,” or “engaged to” the other component, element, or layer (e.g., in contact with the other component, element, or layer), or one or more other components, elements, or layers may reasonably be present 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,” “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.

[0048] 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 "a", "an" and "the" are intended to also include plural forms. As non-limiting examples, the terms "comprise", "include" and "have" illustrate the presence of the described features, quantities, operations, components, elements and / or their combinations, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements and / or their combinations, or the presence of alternative features, quantities, operations, components, elements and / or their combinations. In addition, although an embodiment can set forth the terms "comprise", "include" and "have" to illustrate the presence of the described features, quantities, operations, components, elements and / or their combinations, other embodiments may exist in which one or more of the described features, quantities, operations, components, elements and / or their combinations are not present.

[0049] 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 can be present (e.g., any combination of one or more of A, B, and C), unless the corresponding description and implementation require that the list (e.g., "at least one of A, B, and C") be interpreted as having a conjunctive meaning.

[0050] The features described herein may be embodied in different forms and should not be construed as being 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 after understanding the disclosure of this application. As used herein, the use of the term "may" with respect to an example or embodiment (e.g., with respect to what an example or embodiment may include or implement) means that there is at least one example or embodiment that includes or implements such a feature, and all examples or embodiments are not limited thereto. The terms "example" or "embodiment" as used herein have the same meaning (e.g., the phrase "in one example" has the same meaning as "in one embodiment," and "in one or more examples" has the same meaning as "in one or more embodiments").

[0051] One or more examples may provide an imaging lens system that images and photographs objects at near and far distances.

[0052] One or more examples may provide an imaging lens system configured to capture images of objects located at relatively close distances, rather than just objects located at distant points.

[0053] One or more examples may provide an imaging lens system that captures and records images of not only objects located at distant points or positions but also objects located at close distances with high resolution.

[0054] In one or more examples, the first lens is the lens closest to the object (or subject), and the sixth lens or the seventh lens is the lens closest to the imaging plane (or image sensor). In one or more embodiments, the units of the curvature radius, thickness, TTL (the distance from the object-side surface of the first lens to the imaging plane), IMG HT (height of the imaging plane), and focal length are expressed in millimeters (mm).

[0055] Lens thickness, inter-lens gap, and TTL refer to the distance between lenses along the optical axis. Furthermore, in describing lens shapes, a configuration in which one surface is convex indicates that the paraxial region of that surface is convex, and a configuration in which one surface is concave indicates that the paraxial region of that surface is concave. Therefore, even when describing a lens as convex on one surface, the edge of the lens can also be concave. Similarly, even when describing a lens as concave on one surface, the edge of the lens can also be convex.

[0056] The imaging lens system according to the first aspect may include two lens groups. For example, the imaging lens system according to the first aspect may include a first lens group and a second lens group arranged sequentially from the object side toward the imaging plane. The first lens group and the second lens group may respectively include one or more lenses. For example, the first lens group may be composed of three lenses, and the second lens group may be composed of three or four lenses. However, the number of lenses constituting the first lens group and the second lens group is not limited to the above form. The imaging lens system according to the first aspect may include a lens group movable in the optical axis direction. For example, in the imaging lens system according to the first aspect, the second lens group may be configured to be movable in the optical axis direction. The imaging lens system according to the first aspect may satisfy a specific conditional expression. For example, the imaging lens system according to the first aspect may satisfy the conditional expression TTL / (IMG HT×2) < 0.850, where TTL is the distance from the object side of the frontmost lens set closest to the object to the imaging plane, and IMG HT is the height of the imaging plane.

[0057] The imaging lens system according to the first aspect may include a predetermined lens. For example, the imaging lens system according to the first aspect may include a lens having a convex image side surface. For example, in the imaging lens system according to the first aspect, the front lens may have a convex image side surface. As another example, in the imaging lens system according to the first aspect, the lens closest to the imaging surface in the first lens group may have a convex image side surface. The imaging lens system according to the first aspect may also include a lens having a concave image side surface. For example, in the imaging lens system according to the first aspect, the lens closest to the object in the second lens group may have a concave image side surface. As another example, in the imaging lens system according to the first aspect, the last lens arranged closest to the imaging surface may have a concave image side surface.

[0058] The imaging lens system according to the second aspect can include a first lens group and a second lens group arranged sequentially from the object side toward the imaging plane, and can include one or more lenses having a convex image-side surface. For example, in the imaging lens system according to the second aspect, the frontmost lens disposed closest to the object can have a convex image-side surface. The imaging lens system according to the second aspect can be configured to satisfy specific conditional expressions. For example, the imaging lens system according to the second aspect can satisfy one or more of the following conditional expressions.

[0059] f / (SD1×2) < 1.90

[0060] 0.90 < |fG1 / fG2| < 1.20

[0061] 0.90 < TTL / f < 1.10

[0062] |fG22 / (L-fG)| / AF < 0.80

[0063] TTL / (IMG HT×2) < 0.85

[0064] fG1 / fG1F < 1.10

[0065] fG2 / fG2F < 1.0

[0066] fG1 / f < 0.55

[0067] SD1 / SD7 < 2.0

[0068] In the above conditional expressions, f is the focal length of the imaging lens system, SD1 is the effective radius of the front lens, fG1 is the focal length of the first lens group, fG2 is the focal length of the second lens group, L is the maximum approach distance (the distance from the object side of the front lens to the object (or subject)) that can be captured by the imaging lens system, AF is the maximum actuation distance of the second lens group, fG1F is the focal length of the front lens, fG2F is the focal length of the lens closest to the object in the second lens group, and SD7 is the effective radius of the lens closest to the object in the second lens group.

[0069] The imaging lens system according to the third aspect may include one or more of the characteristics according to the first and second aspects, and may be configured to satisfy one or more of the following conditional expressions. As an example, the imaging lens system according to the third aspect may include the characteristics according to the first aspect and satisfy one or more of the following conditional expressions. As another example, the imaging lens system according to the third aspect may include the characteristics according to the second aspect and satisfy two or more of the following conditional expressions.

[0070] -1.20 < fG1F / fG2F < -0.40

[0071] 0.60 < fG1F / fG1R < 1.0

[0072] 0.30 < fG2F / fG2R < 1.0

[0073] -1.60 < fG1R / fG2F < -0.80

[0074] -0.80 < fG1R / fG2R < -0.10

[0075] In the above conditional expressions, fG1R is the focal length of the lens closest to the imaging plane in the first lens group, and fG2R is the focal length of the lens closest to the imaging plane in the second lens group.

[0076] The imaging lens system according to the fourth aspect includes a plurality of lenses arranged sequentially from the object side toward the imaging surface. As an example, the imaging lens system according to the fourth aspect 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 according to the fourth aspect 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 fourth aspect may include a lens having a convex image-side surface. For example, in the imaging lens system according to the fourth aspect, the first lens may have a convex image-side surface. The imaging lens system according to the fourth aspect may satisfy a specific conditional expression. As an example, the imaging lens system according to the fourth aspect may satisfy the conditional expression -1.20 < f1 / f4 < -0.40. In the conditional expression, f1 is the focal length of the first lens, and f4 is the focal length of the fourth lens.

[0077] The imaging lens system according to the fifth aspect includes a plurality of lenses arranged sequentially from the object side toward the imaging surface, and can satisfy one or more of the following conditional expressions. As an example, the imaging lens system according to the fifth aspect includes 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, and can satisfy one or more of the following conditional expressions. As another example, the imaging lens system according to the fifth aspect includes 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, and can satisfy one or more of the following conditional expressions.

[0078] -1.20 < f1 / f4 < -0.40

[0079] 0.60 < f1 / f3 < 1.0

[0080] -1.60 < f3 / f4 < -0.80

[0081] -0.80 < f3 / f6 < -0.30

[0082] -0.50 < f3 / f7 < -0.20

[0083] 0.30 < f4 / f6 < 1.0

[0084] 0.30 < f4 / f7 < 0.40

[0085] 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, f5 is the focal length of the fifth lens, f6 is the focal length of the sixth lens, and f7 is the focal length of the seventh lens.

[0086] The imaging lens system according to the sixth aspect includes a plurality of lenses arranged sequentially from the object side toward the imaging surface, and can satisfy one or more of the following conditional expressions. As an example, the imaging lens system according to the sixth aspect includes 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, and can satisfy one or more of the following conditional expressions. As another example, the imaging lens system according to the sixth aspect includes 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, and can satisfy one or more of the following conditional expressions.

[0087] 0.30 < R1 / R5 < 0.80

[0088] -0.80 < R1 / R6 < -0.30

[0089] -1.40 < R1 / R7 < -0.80

[0090] -2.10 < R2 / R5 < -1.0

[0091] 1.0 < R2 / R6 < 2.0

[0092] -3.0 < R5 / R7 < -1.20

[0093] 1.20 < R6 / R7 < 3.0

[0094] In the above conditional expressions, R1 is the curvature radius of the object-side surface of the first lens, R2 is the curvature radius of the image-side surface of the first lens, R5 is the curvature radius of the object-side surface of the third lens, R6 is the curvature radius of the image-side surface of the third lens, and R7 is the curvature radius of the object-side surface of the fourth lens.

[0095] The imaging lens system according to the seventh aspect can be configured to include two or more of the characteristics according to the first to sixth aspects. As an example, the imaging lens system according to the seventh aspect can include the characteristics according to the first aspect and satisfy one or more of the conditional expressions according to the fifth aspect. As another example, the imaging lens system according to the seventh aspect can include the characteristics according to the first aspect and satisfy one or more of the conditional expressions according to the sixth aspect.

[0096] The imaging lens system according to the present disclosure may include one or more lenses having the following characteristics as needed. As an example, the imaging lens system according to the first aspect may include one of the first to seventh lenses having the following characteristics. As another example, the imaging lens system according to the second to fourth aspects may include one or more of the first to seventh lenses having the following characteristics. However, the imaging lens system according to the above aspects does not necessarily include lenses having the following characteristics. The characteristics of the first to seventh lenses will be described below.

[0097] 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 shape on one surface. For example, the first lens may have a convex 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 processing properties. For example, the first lens may be formed of a plastic material or glass. The first lens may be configured to have a high refractive index. For example, the refractive index of the first lens may be greater than 1.5. As a specific example, the refractive index of the first lens may be greater than 1.50 and less than 1.6. 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 50 and less than 60.

[0098] 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 shape on one surface. For example, the second lens may have a concave image-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 from a material having high light transmittance and excellent processing properties. For example, the second lens may be formed from a plastic material or glass. The second lens may be configured to have a greater refractive index than 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 a specific example, the Abbe number of the second lens may be greater than 20 and less than 30.

[0099] 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 shape on one surface. 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 from a material having high light transmittance and excellent processing properties. For example, the third lens may be formed from a plastic material. The third lens may be configured to have a lower refractive index than 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 a specific example, the Abbe number of the third lens may be greater than 50 and less than 60.

[0100] The fourth lens may have a refractive power. For example, the fourth lens may have a negative refractive power. The fourth lens may have a concave shape on one surface. 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 from a material having high light transmittance and excellent processing properties. For example, the fourth lens may be formed from a plastic material. The fourth lens may be configured to have a lower refractive index than the second lens. As an example, the refractive index of the fourth lens may be less than 1.6. The fourth lens may have a predetermined Abbe number. For example, the Abbe number of the fourth lens may be greater than 50. As a specific example, the Abbe number of the fourth lens may be greater than 50 and less than 60.

[0101] The fifth lens may have a refractive power. For example, the fifth lens may have a positive refractive power. The fifth lens may have a convex shape on one surface. For example, the fifth lens may have a convex image-side surface. 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 processing properties. For example, the fifth lens may be formed from a plastic material. The fifth lens may be configured to have a greater refractive index than the fourth 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 greater than 20. As a specific example, the Abbe number of the fifth lens may be greater than 20 and less than 30.

[0102] The sixth lens may have a refractive power. For example, the sixth lens may have a negative refractive power. The sixth lens may have a concave shape on one surface. As an example, the sixth lens may have a concave object-side surface. As another example, the sixth lens may have a concave image-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. The sixth lens may have an inflection point. For example, the inflection point may be formed on the image-side surface of the sixth lens. The sixth lens may be formed from a material having high light transmittance and excellent processing properties. For example, the sixth lens may be formed from a plastic material. The sixth lens may be configured to have a predetermined refractive index. As an 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. As a specific example, the Abbe number of the sixth lens may be greater than 50 and less than 60.

[0103] 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 shape on one surface. As an example, the seventh lens may have a convex object-side surface. The seventh lens may include a spherical surface or an aspherical surface. For example, both surfaces of the seventh lens may be aspherical. The seventh lens may have an inflection point. For example, the inflection point may be formed on the image-side surface of the seventh lens. The seventh lens may be formed from a material having high light transmittance and excellent processing properties. For example, the seventh lens may be formed from a plastic material. The seventh lens may be configured to have a predetermined refractive index. As an 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. As a specific example, the Abbe number of the seventh lens may be greater than 50 and less than 60.

[0104] 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 represented by the following equation 1.

[0105] Equation 1:

[0106]

[0107] In Equation 1, c is the reciprocal of the radius of curvature of the corresponding lens, k is the conic constant, r is the distance from an arbitrary point on the aspherical surface to the optical axis, A to H, J, and L 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.

[0108] The imaging lens system according to the above embodiments or forms may further include an optical filter. The optical filter may be disposed between the final lens element (the sixth lens element or the seventh lens element) and the imaging plane. The optical filter may be configured to block light of a specific wavelength. For reference, the optical filter described in one or more embodiments is configured to block infrared light, but the wavelength of light blocked by the filter is not limited to infrared light.

[0109] Hereinafter, specific embodiments will be described in detail based on the accompanying illustrative drawings.

[0110] First, refer to Figure 1 and Figure 2 An exemplary imaging lens system according to the first embodiment is described.

[0111] The exemplary imaging lens system 100 may include multiple lens groups. In an example, the exemplary imaging lens system 100 may include a first lens group LG1 and a second lens group LG2. The first lens group LG1 and the second lens group LG2 may be arranged sequentially from the object side toward the imaging surface. The first lens group LG1 and the second lens group LG2 may include one or more lenses. In a non-limiting example, the first lens group LG1 and the second lens group LG2 may each consist of three lenses.

[0112] The first lens group LG1 may be composed of a first lens 110, a second lens 120, and a third lens 130. 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 convex image-side surface.

[0113] The second lens group LG2 may be composed of a fourth lens 140, a fifth lens 150, and a sixth lens 160. 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 concave object-side surface and a convex image-side surface. The sixth lens 160 may have negative refractive power and may have a concave object-side surface and a concave image-side surface.

[0114] In an example, the second lens group LG2 may be configured to be movable in the optical axis direction. Therefore, the exemplary imaging lens system 100 according to the first embodiment can achieve automatic focus adjustment (AF) and focus magnification adjustment (zooming) of the camera module by moving the second lens group LG2.

[0115] In addition to the first through sixth lenses 110 through 160, the exemplary imaging lens system 100 may further include other lens elements. For example, 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 sixth lens 160 and the imaging surface IP. The imaging surface IP may be formed at a location where light incident from the first through sixth lenses 110 through 160 forms an image. In some examples, the imaging surface IP may be formed on a surface of the image sensor IS of the camera module, or on a lens element disposed within the image sensor IS.

[0116] The exemplary imaging lens system 100 according to the first embodiment can capture images of both nearby and distant objects. As an example, the imaging lens system 100 can generally capture images of objects located at a long distance. As another example, the exemplary imaging lens system 100 can change the position of the second lens group LG2 to capture images of objects located at a relatively short distance (e.g., 100 mm).

[0117] Figure 2 Aberration characteristics of an exemplary imaging lens system 100 according to the first embodiment are shown. Tables 1 and 2 below show lens characteristics and aspheric surface values ​​of the imaging lens system 100 according to the first embodiment.

[0118] Table 1

[0119]

[0120] Table 2

[0121]

[0122]

[0123] Will refer to Figure 3 and Figure 4An exemplary imaging lens system according to the second embodiment is described.

[0124] The exemplary imaging lens system 200 may include multiple lens groups. For example, the exemplary imaging lens system 200 may include a first lens group LG1 and a second lens group LG2. The first lens group LG1 and the second lens group LG2 may be arranged sequentially from the object side toward the imaging surface. The first lens group LG1 and the second lens group LG2 may include one or more lenses. For example, the first lens group LG1 and the second lens group LG2 may each be composed of three lenses.

[0125] The first lens group LG1 may include a first lens 210, a second lens 220, and a third lens 230. 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 convex image-side surface.

[0126] The second lens group LG2 may include a fourth lens 240, a fifth lens 250, and a sixth lens 260. 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 negative refractive power and may have a concave object-side surface and a concave image-side surface.

[0127] The second lens group LG2 can be configured to be movable in the optical axis direction. Therefore, the imaging lens system 200 according to the second embodiment can achieve automatic focus adjustment (AF) and focus magnification adjustment (zooming) of the camera module by moving the second lens group LG2.

[0128] In addition to the first through sixth lenses 210 through 260, the exemplary imaging lens system 200 may further include other lens elements. For example, the exemplary imaging lens system 200 may further include an optical filter IF and an imaging surface IP. The optical filter IF may be disposed between the sixth lens 260 and the imaging surface IP. The imaging surface IP may be formed where light incident from the first through sixth lenses 210 through 260 forms an image. For example, the imaging surface IP may be formed on a surface of the image sensor IS of the camera module, or on a lens element disposed within the image sensor IS.

[0129] The exemplary imaging lens system 200 according to the second embodiment can capture images of both nearby and distant objects. For example, the exemplary imaging lens system 200 can generally capture images of objects located at a long distance. As another example, the exemplary imaging lens system 200 can change the position of the second lens group LG2 to capture images of objects located at a relatively short distance (e.g., 100 mm).

[0130] Figure 4 Aberration characteristics of an exemplary imaging lens system 200 according to the second embodiment are shown. Tables 3 and 4 below show lens characteristics and aspheric surface values ​​of the imaging lens system 200 according to the present embodiment.

[0131] Table 3

[0132]

[0133] Table 4

[0134]

[0135]

[0136] Will refer to Figure 5 and Figure 6 An exemplary imaging lens system according to the third embodiment is described.

[0137] The exemplary imaging lens system 300 may include multiple lens groups. For example, the exemplary imaging lens system 300 may include a first lens group LG1 and a second lens group LG2. The first lens group LG1 and the second lens group LG2 may be arranged sequentially from the object side toward the imaging surface. The first lens group LG1 and the second lens group LG2 may include one or more lenses. For example, the first lens group LG1 and the second lens group LG2 may each consist of three lenses.

[0138] The first lens group LG1 may include a first lens 310, a second lens 320, and a third lens 330. The first lens 310 may have positive refractive power and may have a convex object-side surface and a convex image-side surface. The second lens 320 may have negative refractive power and may have a concave 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.

[0139] The second lens group LG2 may include a fourth lens 340, a fifth lens 350, and a sixth lens 360. 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 concave object-side surface and a convex image-side surface. The sixth lens 360 may have negative refractive power and may have a concave object-side surface and a concave image-side surface.

[0140] The second lens group LG2 may be configured to be movable in the optical axis direction. Therefore, the exemplary imaging lens system 300 according to the third embodiment can achieve auto focus adjustment (AF) and focus magnification adjustment (zooming) of the camera module by moving the second lens group LG2.

[0141] In addition to the first through sixth lenses 310 through 360, the exemplary imaging lens system 300 may further include other lens elements. For example, the exemplary imaging lens system 300 may further include an optical filter IF and an imaging surface IP. The optical filter IF may be disposed between the sixth lens 360 and the imaging surface IP. The imaging surface IP may be formed where light incident from the first through sixth lenses 310 through 360 forms an image. For example, the imaging surface IP may be formed on a surface of the image sensor IS of the camera module, or on a lens element disposed within the image sensor IS.

[0142] The exemplary imaging lens system 300 according to the third embodiment can capture images of both nearby and distant objects. For example, the imaging lens system 300 can generally capture images of objects at long distances. For another example, the imaging lens system 300 can change the position of the second lens group LG2 to capture images of objects at a relatively short distance (e.g., 100 mm).

[0143] Figure 6 Aberration characteristics of the exemplary imaging lens system 300 according to the third embodiment are shown. Tables 5 and 6 below show lens characteristics and aspherical values ​​of the exemplary imaging lens system 300 according to the third embodiment.

[0144] Table 5

[0145]

[0146] Table 6

[0147]

[0148]

[0149] Will refer to Figure 7 and Figure 8An exemplary imaging lens system according to a fourth embodiment is described.

[0150] The exemplary imaging lens system 400 may include multiple lens groups. For example, the exemplary imaging lens system 400 may include a first lens group LG1 and a second lens group LG2. The first lens group LG1 and the second lens group LG2 may be arranged sequentially from the object side toward the imaging surface. The first lens group LG1 and the second lens group LG2 may include one or more lenses. In a non-limiting example, the first lens group LG1 and the second lens group LG2 may each be composed of three lenses.

[0151] The first lens group LG1 may include a first lens 410, a second lens 420, and a third lens 430. The first lens 410 may have positive refractive power and may have a convex object-side surface and a convex image-side surface. The second lens 420 may have negative refractive power and may have a concave 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.

[0152] The second lens group LG2 may include a fourth lens 440, a fifth lens 450, and a sixth lens 460. 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.

[0153] The second lens group LG2 may be configured to be movable in the optical axis direction. Therefore, the exemplary imaging lens system 400 according to the fourth embodiment can achieve auto focus adjustment (AF) and focus magnification adjustment (zooming) of the camera module by moving the second lens group LG2.

[0154] In addition to the first through sixth lenses 410 through 460, the exemplary imaging lens system 400 may further include other lens elements. For example, the exemplary imaging lens system 400 may further include an optical filter IF and an imaging surface IP. The optical filter IF may be disposed between the sixth lens 460 and the imaging surface IP. The imaging surface IP may be formed at a location where light incident from the first through sixth lenses 410 through 460 forms an image. For example, the imaging surface IP may be formed on a surface of the image sensor IS of the camera module, or on a lens element disposed within the image sensor IS.

[0155] The exemplary imaging lens system 400 according to the fourth embodiment can capture images of both nearby and distant objects. For example, the imaging lens system 400 can generally image objects at long distances. For another example, the imaging lens system 400 can change the position of the second lens group LG2 to capture images of objects at a relatively short distance (e.g., 100 mm).

[0156] Figure 8 Aberration characteristics of the exemplary imaging lens system 400 according to the fourth embodiment are shown. Tables 7 and 8 show lens characteristics and aspherical values ​​of the exemplary imaging lens system 400 according to the fourth embodiment.

[0157] Table 7

[0158]

[0159] Table 8

[0160]

[0161] Will refer to Figure 9 and Figure 10 An exemplary imaging lens system according to a fifth embodiment is described.

[0162] The exemplary imaging lens system 500 may include multiple lens groups. For example, the imaging lens system 500 may include a first lens group LG1 and a second lens group LG2. The first lens group LG1 and the second lens group LG2 may be arranged sequentially from the object side toward the imaging surface. The first lens group LG1 and the second lens group LG2 may include one or more lenses. In an example, the first lens group LG1 and the second lens group LG2 may each be composed of three lenses.

[0163] The first lens group LG1 may include a first lens 510, a second lens 520, and a third lens 530. The first lens 510 may have positive refractive power and may have a convex object-side surface and a convex 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 convex image-side surface.

[0164] The second lens group LG2 may include a fourth lens 540, a fifth lens 550, and a sixth lens 560. 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 convex 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.

[0165] The second lens group LG2 may be configured to be movable in the optical axis direction. Therefore, the exemplary imaging lens system 500 according to the fifth embodiment can achieve auto focus adjustment (AF) and focus magnification adjustment (zooming) of the camera module by moving the second lens group LG2.

[0166] In addition to the first through sixth lenses 510 through 560, the exemplary imaging lens system 500 may further include other lens elements. For example, the imaging lens system 500 may further include an optical filter IF and an imaging surface IP. The optical filter IF may be disposed between the sixth lens 560 and the imaging surface IP. The imaging surface IP may be formed where light incident from the first through sixth lenses 510 through 560 forms an image. For example, the imaging surface IP may be formed on a surface of the image sensor IS of the camera module, or on a lens element disposed within the image sensor IS.

[0167] The exemplary imaging lens system 500 according to the fifth embodiment can capture images of both nearby and distant objects. For example, the imaging lens system 500 can generally capture images of objects located at a long distance. For another example, the imaging lens system 500 can change the position of the second lens group LG2 to capture images of objects located at a relatively short distance (e.g., 100 mm).

[0168] Figure 10 Aberration characteristics of the exemplary imaging lens system 500 according to the fifth embodiment are shown. Tables 9 and 10 below show lens characteristics and aspherical surface values ​​of the exemplary imaging lens system 500 according to the fifth embodiment.

[0169] Table 9

[0170]

[0171] Table 10

[0172]

[0173] Will refer to Figure 11 and Figure 12 An exemplary imaging lens system according to a sixth embodiment is described.

[0174] The exemplary imaging lens system 600 may include multiple lens groups. For example, the imaging lens system 600 may include a first lens group LG1 and a second lens group LG2. The first lens group LG1 and the second lens group LG2 may be arranged sequentially from the object side toward the imaging surface. The first lens group LG1 and the second lens group LG2 may include one or more lenses. For example, the first lens group LG1 and the second lens group LG2 may each consist of three lenses.

[0175] The first lens group LG1 may include a first lens 610, a second lens 620, and a third lens 630. The first lens 610 may have positive refractive power and may have a convex object-side surface and a convex 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 convex image-side surface.

[0176] The second lens group LG2 may include a fourth lens 640, a fifth lens 650, and a sixth lens 660. The fourth lens 640 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The fifth lens 650 may have positive refractive power and may have a convex 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.

[0177] The second lens group LG2 may be configured to be movable in the optical axis direction. Therefore, the exemplary imaging lens system 600 according to the sixth embodiment can achieve auto focus adjustment (AF) and focus magnification adjustment (zooming) of the camera module by moving the second lens group LG2.

[0178] The exemplary imaging lens system 600 according to the sixth embodiment can capture images of both nearby and distant objects. For example, the imaging lens system 600 can generally capture images of objects at long distances. For another example, the imaging lens system 600 can change the position of the second lens group LG2 to capture images of objects at a relatively short distance (e.g., 100 mm).

[0179] Figure 12 Aberration characteristics of the exemplary imaging lens system 600 according to the sixth embodiment are shown. Tables 11 and 12 below show lens characteristics and aspherical values ​​of the exemplary imaging lens system 600 according to the sixth embodiment.

[0180] Table 11

[0181]

[0182] Table 12

[0183]

[0184] Will refer to Figure 13 and Figure 14 An exemplary imaging lens system according to a seventh embodiment is described.

[0185] The exemplary imaging lens system 700 may include multiple lens groups. For example, the imaging lens system 700 may include a first lens group LG1 and a second lens group LG2. The first lens group LG1 and the second lens group LG2 may be arranged sequentially from the object side toward the imaging surface. The first lens group LG1 and the second lens group LG2 may include one or more lenses. For example, the first lens group LG1 may consist of three lenses, and the second lens group LG2 may consist of four lenses.

[0186] The first lens group LG1 may be composed of a first lens 710, a second lens 720, and a third lens 730. 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 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.

[0187] The second lens group LG2 may be composed of a fourth lens 740, a fifth lens 750, a sixth lens 760, and a seventh lens 770. The fourth lens 740 may have negative refractive power and may have a convex object-side surface and a concave 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 concave object-side surface and a convex image-side surface. The seventh lens 770 may have negative refractive power and may have a convex object-side surface and a concave image-side surface.

[0188] The second lens group LG2 may be configured to be movable in the optical axis direction. Therefore, the exemplary imaging lens system 700 according to the seventh embodiment can achieve auto focus adjustment (AF) and focus magnification adjustment (zooming) of the camera module by moving the second lens group LG2.

[0189] In addition to the first through seventh lenses 710 through 770, the exemplary imaging lens system 700 may further include other lens elements. For example, 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 where light incident from the first through seventh lenses 710 through 770 forms an image. For example, the imaging plane IP may be formed on a surface of the image sensor IS of the camera module, or on a lens element disposed within the image sensor IS.

[0190] The exemplary imaging lens system 700 according to the seventh embodiment can capture images of both nearby and distant objects. For example, the imaging lens system 700 can generally image objects at long distances. As another example, the exemplary imaging lens system 700 can change the position of the second lens group LG2 to capture images of objects at a relatively short distance (e.g., 100 mm).

[0191] Figure 13 Aberration characteristics of the exemplary imaging lens system 700 according to the seventh embodiment are shown. Table 13 and Table 14 show lens characteristics and aspherical values ​​of the exemplary imaging lens system 700 according to the seventh embodiment.

[0192] Table 13

[0193]

[0194] Table 14

[0195]

[0196] Will refer to Figure 15 and Figure 16 An exemplary imaging lens system according to an eighth embodiment is described.

[0197] The exemplary imaging lens system 800 may include multiple lens groups. For example, the imaging lens system 800 may include a first lens group LG1 and a second lens group LG2. The first lens group LG1 and the second lens group LG2 may be arranged sequentially from the object side toward the imaging surface. The first lens group LG1 and the second lens group LG2 may include one or more lenses. For example, the first lens group LG1 may consist of three lenses, and the second lens group LG2 may consist of four lenses.

[0198] The first lens group LG1 may be composed of a first lens 810, a second lens 820, and a third lens 830. 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 convex 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 convex image-side surface.

[0199] The second lens group LG2 may be composed of a fourth lens 840, a fifth lens 850, a sixth lens 860, and a seventh lens 870. The fourth lens 840 may have negative refractive power and may have a concave object-side surface and a concave image-side surface. The fifth lens 850 may have positive refractive power and may have a concave object-side surface and a convex image-side surface. The sixth lens 860 may have negative refractive power and may have a concave object-side surface and a convex image-side surface. The seventh lens 870 may have negative refractive power and may have a convex object-side surface and a concave image-side surface.

[0200] The second lens group LG2 can be configured to be movable in the optical axis direction. Therefore, the imaging lens system 800 according to the eighth embodiment can realize automatic focus adjustment (AF) and focus magnification adjustment (zooming) of the camera module by moving the second lens group LG2.

[0201] In addition to the first through seventh lenses 810 through 870, the exemplary imaging lens system 800 may further include other lens elements. For example, the imaging lens system 800 may further include an optical filter IF and an imaging plane IP. The optical filter IF may be disposed between the seventh lens 870 and the imaging plane IP. The imaging plane IP may be formed where light incident from the first through seventh lenses 810 through 870 forms an image. For example, the imaging plane IP may be formed on a surface of the image sensor IS of the camera module, or on a lens element disposed within the image sensor IS.

[0202] The exemplary imaging lens system 800 according to the eighth embodiment can capture images of both nearby and distant objects. For example, the imaging lens system 800 can generally capture images of objects at long distances. For another example, the exemplary imaging lens system 800 can change the position of the second lens group LG2 to capture images of objects at a relatively short distance (e.g., 100 mm).

[0203] Figure 15 Aberration characteristics of the exemplary imaging lens system 800 according to the eighth embodiment are shown. Table 15 and Table 16 show lens characteristics and aspherical values ​​of the exemplary imaging lens system 800 according to the eighth embodiment.

[0204] Table 15

[0205]

[0206] Table 16

[0207]

[0208] Table 17 below shows characteristic values ​​of exemplary imaging lens systems according to the first to eighth embodiments.

[0209] Table 17

[0210]

[0211] According to examples of the first to eighth embodiments, an imaging lens system according to one or more embodiments may have specific lens characteristics. For example, the focal length of the first lens may be determined within the range of 5.0 mm to 8.0 mm, the focal length of the second lens may be determined within the range of -12.0 mm to -6.0 mm, the focal length of the third lens may be determined within the range of 6.0 mm to 10.0 mm, the focal length of the fourth lens may be determined within the range of -10.0 mm to -4.0 mm, the focal length of the fifth lens may be determined within the range of 10.0 mm to 40.0 mm, and the focal length of the seventh lens may be determined within the range of -24.0 mm to -18.0 mm. The focal length of the sixth lens may vary depending on the number of lenses comprising the imaging lens system. For example, in an imaging lens system consisting of six lenses, the focal length of the sixth lens may be determined within the range of -24 mm to -8.0 mm, and in an imaging lens system consisting of seven lenses, the focal length of the sixth lens may be determined within the range of -60 mm to -40.0 mm.

[0212] Table 18 to Table 21 below show conditional expression values ​​of exemplary imaging lens systems according to the first to eighth embodiments.

[0213] Table 18

[0214]

[0215] Table 19

[0216]

[0217] Table 20

[0218]

[0219] Table 21

[0220]

[0221] The exemplary imaging lens system according to one or more embodiments may be modified into other forms. As an example, the imaging lens system according to one or more embodiments may include one or more optical path conversion devices.

[0222] As a specific example, the exemplary imaging lens systems 100, 200, 300, 400, 500, 600, 700, and 800 according to the first to eighth embodiments may further include: Figure 17The optical path conversion device P shown in . In the example, the optical path conversion device P can be in the form of a prism. However, the type of the optical path conversion device P is not limited to a prism. As an example, the optical path conversion device P can be configured in the form of a reflector. The optical path conversion device P can be arranged on the object side of the frontmost lens. However, the placement position of the optical path conversion device P is not limited to the object side of the frontmost lens. As an example, the optical path conversion device P can be arranged on the image side of the last lens. As another example, the optical path conversion device P can be respectively arranged on the object side of the frontmost lens and on the image side of the last lens.

[0223] Will refer to Figure 18 Electronic devices according to one or more embodiments are described.

[0224] The exemplary electronic device 10 according to one or more embodiments may include a camera module.

[0225] As an example, the electronic device 10 may be a portable terminal including the camera modules 20 and 30. However, the form of the electronic device 10 is not limited to a portable terminal. For example, as an example only, the electronic device 10 may include any portable electronic device such as a laptop computer or a tablet personal computer (PC). The electronic device 10 according to one or more embodiments may include one or more of the imaging lens systems 100, 200, 300, 400, 500, 600, 700, and 800 according to the first to eighth embodiments. As an example, the imaging lens systems 100, 200, 300, 400, 500, 600, 700, and 800 according to the first to eighth embodiments are provided in the first camera module 20 and the second camera module 30 mounted on one side of the electronic device 10.

[0226] 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 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 in a different order, and / or if the components in the described systems, architectures, devices, or circuits are combined in different ways and / or replaced or supplemented by other components or their equivalents.

[0227] Therefore, the scope of the present disclosure includes the claims and their equivalents in addition to the above disclosure and all accompanying drawings, that is, all variations 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: a first lens group including one or more lenses; and a second lens group including one or more lenses and configured to be movable in the optical axis direction; wherein the first lens group and the second lens group are arranged sequentially from the object side toward the imaging surface, and Wherein, the imaging lens system satisfies the following conditional expression: TTL / (IMG HT×2)<0.850, Wherein, TTL is the distance from the object side surface of the front lens disposed closest to the object to the imaging plane, and IMG HT is the height of the imaging plane.

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

3. The imaging lens system according to claim 1, wherein: A rear lens in the first lens group that is closest to the second lens group has a convex image-side surface.

4. The imaging lens system according to claim 1, wherein: A front lens element in the second lens group, which is disposed closest to the first lens group, has a concave object-side surface.

5. The imaging lens system according to claim 1, wherein: The last lens disposed closest to the imaging plane has a concave image-side surface.

6. The imaging lens system according to claim 1, wherein: fG1 / fG1F<1.10, Wherein, fG1 is the focal length of the first lens group, and fG1F is the focal length of the front lens.

7. The imaging lens system according to claim 1, wherein: fG2 / fG2F<1.0, Wherein, fG2 is the focal length of the second lens group, and fG2F is the focal length of the lens in the second lens group that is closest to the object.

8. The imaging lens system according to claim 1, wherein: fG1 / f<0.550, Wherein, fG1 is the focal length of the first lens group, and f is the focal length of the imaging lens system.

9. An imaging lens system, characterized in that The imaging lens system comprises: The first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are arranged in sequence from the object side toward the imaging surface. wherein the first lens has a convex image-side surface, and Among them, -1.2 <f1 / f4<-0.40, Wherein, f1 is the focal length of the first lens, and f4 is the focal length of the fourth lens.

10. The imaging lens system according to claim 9, wherein: The first lens has a convex object-side surface.

11. The imaging lens system according to claim 9, wherein: The second lens has a concave image-side surface.

12. The imaging lens system according to claim 9, wherein: The third lens has a convex object-side surface.

13. The imaging lens system according to claim 9, wherein: The fourth lens has a concave object-side surface.

14. The imaging lens system according to claim 9, wherein: The fifth lens element has a convex image-side surface.

15. The imaging lens system according to claim 9, wherein: The imaging lens system also includes a seventh lens provided on the image side of the sixth lens.

16. The imaging lens system according to claim 15, wherein: The seventh lens has a concave image-side surface.

17. An electronic device, characterized in that The electronic device comprises: An imaging lens system comprising: The first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are arranged in sequence from the object side toward the imaging surface. Wherein, the imaging lens system satisfies the following conditional expression: TTL / (IMG HT×2)<0.850, Wherein, TTL is the distance from the object side surface of the front lens disposed closest to the object to the imaging plane, and IMG HT is the height of the imaging plane.

18. The electronic device according to claim 17, wherein: The imaging lens system also includes a seventh lens provided on the image side of the sixth lens.

Images