Optical imaging lens system

Abstract

The optical imaging lens system includes 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 an object side, in which the first lens has a convex image-side surface, the sixth lens has a concave object-side surface, and satisfies the following conditional expressions: (TTL / IMH) * Fnot; 1.71, where TTL is the distance on the optical axis from the object-side surface of the first lens to the imaging surface, and IMH is the diagonal length of the imaging surface.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2024-0082609, filed on June 25, 2024, with the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes. Technical Field

[0003] This disclosure relates to optical imaging lens systems. Background Technology

[0004] Recently, the performance of cameras installed in mobile devices has been gradually improving.

[0005] For example, cameras used in mobile devices are typically equipped with high-resolution image sensors, and optical systems are being developed to accommodate this.

[0006] At the same time, as the size of the image sensor increases, the overall length of the optical system also increases. However, since thinness is necessary for mobile devices, there is a need to develop optical systems that are thin yet high-performance.

[0007] The above information is presented as background information and is intended to aid in understanding this disclosure. No determination or assertion is made as to whether any of the above content can be used as prior art with respect to this disclosure. Utility Model Content

[0008] This summary portion is provided to briefly introduce the selection of concepts, which will be further described in the detailed description portion below. This summary portion is not intended to identify key or essential features of the claimed subject matter, nor is it intended to help determine the scope of the claimed subject matter.

[0009] In a general sense, the optical imaging lens system 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, wherein the first lens has a convex image-side surface, the sixth lens has a concave object-side surface, and satisfies the following conditional expression: (TTL / IMH)×Fno<1.71, where TTL is the distance from the object-side surface of the first lens to the imaging plane on the optical axis, IMH is the diagonal length of the imaging plane, and Fno is the ratio of the total focal length of the optical imaging lens system to the diameter of the entrance pupil.

[0010] The sixth lens may have a convex image-side surface.

[0011] The following conditional expression can be satisfied: L6R1 / CT6 <- 6, where L6R1 is a curvature radius of an object side surface of the sixth lens, and CT6 is a thickness of the sixth lens on an optical axis.

[0012] The following conditional expression can be satisfied: 2 < L6R1 / L6R2, where L6R1 is a curvature radius of an object side surface of the sixth lens, and L6R2 is a curvature radius of an image side surface of the sixth lens.

[0013] The fourth lens can have a convex object side surface.

[0014] The following conditional expression can be satisfied: 15 < v1-v2 < 40, where v1 is an Abbe number of the first lens, and v2 is an Abbe number of the second lens.

[0015] The following conditional expression can be satisfied: 0 < v1-v7 < 40, where v1 is an Abbe number of the first lens, and v7 is an Abbe number of the seventh lens.

[0016] The fifth lens can have a negative refractive power and a concave image side surface.

[0017] The sixth lens can have a positive refractive power, and the seventh lens can have a negative refractive power.

[0018] In another general aspect, an optical imaging lens system includes: a first lens having a negative refractive power and a convex image side surface; a second lens having a positive refractive power; a third lens having a positive refractive power; a fourth lens having a positive refractive power; a fifth lens having a refractive power; a sixth lens having a positive refractive power; and a seventh lens having a refractive power, wherein the first lens to the seventh lens are arranged in order from an object side, and the following conditional expression is satisfied: L6R1 / CT6 <- 6, where L6R1 is a curvature radius of an object side surface of the sixth lens, and CT6 is a thickness of the sixth lens on an optical axis.

[0019] The fifth lens and the seventh lens can each have a negative refractive power.

[0020] The following conditional expression can be satisfied: TTL / IMH < 0.86, where TTL is a distance on an optical axis from an object side surface of the first lens to an image plane, and IMH is a diagonal length of the image plane.

[0021] The following conditional expression can be satisfied: 50 < FOV / f (unit: ° / mm), where FOV is a field of view of the optical imaging lens system, and f is a total focal length of the optical imaging lens system.

[0022] The following conditional expression can be satisfied: 25 < v1-v5 < 45, where v1 is an Abbe number of the first lens, and v5 is an Abbe number of the fifth lens.

[0023] The fifth lens can have a concave image-side surface.

[0024] Other features and aspects will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the application. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1A is a configuration diagram of an optical imaging lens system according to a first embodiment of the present disclosure.

[0026] Figure 1B is a configuration diagram of an optical imaging lens system according to a second embodiment of the present disclosure. Figure 1A is a graph showing aberration characteristics of the optical imaging lens system shown in

[0027] Figure 2A is a configuration diagram of an optical imaging lens system according to a third embodiment of the present disclosure.

[0028] Figure 2B is a configuration diagram of an optical imaging lens system according to a fourth embodiment of the present disclosure. Figure 2A is a graph showing aberration characteristics of the optical imaging lens system shown in

[0029] Figure 3A is a configuration diagram of an optical imaging lens system according to a fifth embodiment of the present disclosure.

[0030] Figure 3B is a graph showing aberration characteristics of the optical imaging lens system shown in Figure 3A

[0031] Figure 4A is a configuration diagram of an optical imaging lens system according to a sixth embodiment of the present disclosure.

[0032] Figure 4B is a graph showing aberration characteristics of the optical imaging lens system shown in Figure 4A

[0033] Figure 5A is a configuration diagram of an optical imaging lens system according to a seventh embodiment of the present disclosure.

[0034] Figure 5B is a graph showing aberration characteristics of the optical imaging lens system shown in Figure 5A

[0035] Figure 6A is a configuration diagram of an optical imaging lens system according to an eighth embodiment of the present disclosure.

[0036] Figure 6B is a graph showing aberration characteristics of the optical imaging lens system shown in Figure 6A

[0037] Figure 7A ​​​​is a configuration diagram of an optical imaging lens system according to a seventh embodiment of the present disclosure.

[0038] Figure 7B is a graph showing aberration characteristics of the optical imaging lens system shown in Figure 7A

[0039] Figure 8A is a configuration diagram of an optical imaging lens system according to an eighth embodiment of the present disclosure.

[0040] Figure 8B is a graph showing aberration characteristics of the optical imaging lens system shown in Figure 8A

[0041] Throughout the drawings and detailed description, unless otherwise described, like reference characters refer to like elements. The drawings can not be to scale, and the relative dimensions, proportions, and depiction of elements in the drawings can be exaggerated for purpose of clarity, illustration, and convenience. DETAILED DESCRIPTION

[0042] Hereinafter, while examples of the present disclosure will be described in detail with reference to the accompanying drawings, it should be noted that the examples are not limited thereto.

[0043] The following detailed description is provided to help the reader obtain a thorough understanding of the methods, apparatuses, and / or systems described herein. However, various changes, modifications, and equivalents thereof will become apparent to those skilled in the art after an understanding of the present disclosure. For example, the order of the operations described herein is merely an example, and is not limited to the order set forth herein, except for operations that must occur in a specific order, and can be changed, which will be apparent to those skilled in the art after an understanding of the present disclosure. In addition, descriptions of features well known in the art can be omitted for the sake of clarity and conciseness.

[0044] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, these examples are provided so that this disclosure will be thorough and complete, and fully convey the concept of implementing the methods, apparatuses, and / or systems described herein to those skilled in the art after an understanding of the present disclosure. The examples described herein are to be considered in a descriptive sense only and not intended to limit the scope of the present disclosure.

[0045] ​​Throughout this specification, where an element such as a layer, region, or substrate is described as being "on" or "connected to" another element, it can be directly on or connected to the other element, or intervening elements can be present. In contrast, where an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that when an element described herein is a means plus function, e.g., "a means for" or "a step for," the element can be embodied in many alternative forms including, for example, a circuit, a

[0046] As used herein, the term "and / or" includes any one of the associated listed items, as well as any combination of any two or more of the associated listed items; similarly, "at least one of' includes any one of the associated listed items, as well as any combination of any two or more of the associated listed items.

[0047] Although terminology can be used in this document, such as "first," "second," and "third," names are used to distinguish one element, component, region, layer, or section from another element, component, region, layer, or section. More specifically, these terms are used only to distinguish one element, component, region, layer, or section from another element, component, region, layer, or section. Therefore, the first element, the first component, the first region, the first layer, or the first part mentioned in the examples can also be called the second element, the second component, the second region, the second layer, or the second part without departing from the teachings of the examples described herein.

[0048] Spatially relative terms such as "on", "above", "under", "below", and the like can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Spatially relative terms can be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "on" other elements or features would then be oriented "below" or "on" the other elements or features. Thus, the term "above" encompasses both an orientation of above and below. The device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0049] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the present disclosure. As used herein, the expression "one," "a," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The expressions "comprises," "comprising," "includes," "including," and "has," "having," and the like are inclusive of the stated features, numbers, operations, members, elements, and / or combinations thereof, but not excluding the presence or addition of one or more other features, numbers, operations, members, elements, and / or combinations thereof.

[0050] The shapes shown in the drawings can vary due to manufacturing techniques and / or tolerances. Thus, the examples described herein are not limited to the specific shapes shown in the drawings, but include variations in shapes that occur during manufacturing.

[0051] It should be noted that, in this document, the expression "may" used with respect to examples, for example, with respect to what an example can include or implement, means that there is at least one example in which the feature is included or implemented, and all examples are not limited thereto.

[0052] Features of the examples described herein can be combined in various ways in accordance with the understanding of the present disclosure. Also, although the examples described herein have various configurations, other configurations are possible in accordance with the understanding of the present disclosure.

[0053] The present disclosure aims to provide a slim optical imaging lens system capable of taking high-resolution images.

[0054] In addition, the present disclosure aims to provide an ultra-wide-angle photographing lens system that is advantageous for recording in a dark environment.

[0055] In the present disclosure, the first lens refers to the lens closest to the object side, and the seventh lens refers to the lens closest to the image sensor side (or the image side).

[0056] In addition, in the description of the lens shape, the configuration in which one surface is convex means that the paraxial region of the one surface is convex, and the configuration in which one surface is concave means that the paraxial region of the one surface is concave. The paraxial region of the lens surface is a central portion of the lens surface surrounding and including the optical axis of the lens surface, in which the light rays incident to the lens surface form a small angle θ with the optical axis, and the approximations of sin θ ≈ θ, tan θ ≈ θ, and cos θ ≈ 1 are valid. Thus, even when it is described that one surface of the lens is convex, the edge portion of the lens can be concave. Similarly, even when it is described that one surface of the lens is concave, the edge portion of the lens can be convex.

[0057] In the present disclosure, all parameters related to length, including the radius of curvature, the thickness, the distance, and the focal length of the lens, are expressed in millimeters (mm), and the unit of the field of view is degrees (°).

[0058] The optical imaging lens system according to embodiments of the disclosure can include seven lenses. For example, the optical imaging lens system can include, arranged in order from the object side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens.

[0059] However, the optical imaging lens system according to embodiments of the disclosure can not include only seven lenses.

[0060] For example, the optical imaging lens system can further include an image sensor that converts an incident image of an object into an electrical signal.

[0061] In addition, the optical imaging lens system can further include an infrared blocking filter (hereinafter referred to as a "filter") that blocks light in an infrared range among light incident onto the image sensor. For example, the filter can be disposed between the seventh lens and the image sensor.

[0062] In addition, the optical imaging lens system can further include a stop for controlling the amount of light. For example, the stop can be disposed between the second lens and the third lens.

[0063] The optical imaging lens system according to embodiments of the disclosure can include lenses formed of a plastic material. For example, the first lens to the seventh lens can all be formed of a plastic material.

[0064] The optical imaging lens system according to embodiments of the disclosure can include aspherical lenses. For example, at least one surface of each of the first lens to the seventh lens can be an aspherical surface. As another example, the first lens to the seventh lens can have aspherical surfaces on both the object side and the image side.

[0065] The aspherical surface of each lens can be represented by the following Equation 1.

[0066] Equation 1:

[0067]

[0068] In Equation 1, c is the curvature of the lens (the reciprocal of the radius of curvature), K is the conic constant, Y is the distance from a certain point on the aspherical surface of the lens to the optical axis, A to H, J, and L to P are aspherical coefficients, and Z(SAG) is the distance in the optical axis direction between a certain point on the aspherical surface of the lens and the vertex of the corresponding aspherical surface.

[0069] The optical imaging lens system according to embodiments of the disclosure can be a super wide-angle lens system capable of capturing a bright image even in a dark environment. For example, the field of view of the optical imaging lens system can be 115° or more, and the Fno can be less than 2.0.

[0070] An optical imaging lens system according to embodiments of the disclosure can satisfy the following conditional expressions.

[0071] Conditional Expression 1: (TTL / IMH) x Fno < 1.71

[0072] Conditional Expression 2: f / EPD ≤ 2.0

[0073] Conditional Expression 3: 15 < v1-v2 < 40

[0074] Conditional Expression 4: 25 < v1-v5 < 45

[0075] Conditional Expression 5: 0 < v1-v7 < 40

[0076] Conditional Expression 6: TTL / IMH < 0.86

[0077] Conditional Expression 7: 50 < FOV / f (unit: ° / mm)

[0078] Conditional Expression 8: L6R1 / CT6 < -6

[0079] Conditional Expression 9: 2 < L6R1 / L6R2

[0080] Conditional Expression 10: 2.3 < L1R1 / L2R2 < 3.3

[0081] In the conditional expression 1, the conditional expression 2, and the conditional expression 6, TTL is a distance on an optical axis from a subject side surface of a first lens to an image plane, IMH is a diagonal length of the image plane, f is a focal length of the optical imaging lens system, EPD is a diameter of an entrance pupil, and Fno is a numerical value indicating brightness of the optical imaging lens system calculated through f / EPD of the conditional expression 2. The conditional expression 2 is a condition that limits the brightness of the optical imaging lens system, and when the conditional expression 2 is satisfied, a desired level of brightness can be achieved. The conditional expression 6 is an index that miniaturizes the optical imaging lens system, and when the conditional expression 6 is satisfied, a miniaturization goal can be achieved. Further, when the conditional expression 1 is satisfied, it can correspond to the optical imaging lens system having a miniaturization goal and a desired level of brightness.

[0082] In the conditional expression 3, the conditional expression 4, and the conditional expression 5, v1 is an Abbe number of the first lens, v2 is an Abbe number of a second lens, v5 is an Abbe number of a fifth lens, and v7 is an Abbe number of a seventh lens. When the conditional expression 3, the conditional expression 4, and the conditional expression 5 are satisfied, chromatic aberration of the optical imaging lens system can be minimized.

[0083] In conditional expression 7, FOV is a field of view of the optical imaging lens system, and f is a focal length of the optical imaging lens system. When conditional expression 7 is satisfied, the optical imaging lens system can correspond to a (super) wide-angle lens system.

[0084] In conditional expression 8 and conditional expression 9, L6R1 is a radius of curvature of an object side surface of the sixth lens, L6R2 is a radius of curvature of an image side surface of the sixth lens, and CT6 is a thickness of the sixth lens on the optical axis. Conditional expression 8 and conditional expression 9 can be shape-related conditions of the sixth lens for removing flare, and when conditional expression 8 and conditional expression 9 are satisfied, flare phenomenon can be prevented.

[0085] In conditional expression 10, L1R1 is an effective radius of an object side surface of the first lens, and L2R2 is an effective radius of an image side surface of the second lens. Conditional expression 10 is a shape-related condition of the first lens for implementing a (super) wide-angle lens system, and when conditional expression 10 is satisfied, the optical imaging lens system can correspond to a (super) wide-angle lens system.

[0086] First embodiment

[0087] Figure 1A is a configuration diagram of an optical imaging lens system according to the first embodiment of the disclosure, and Figure 1B is a graph showing Figure 1A aberration characteristics of the optical imaging lens system shown in

[0088] The optical imaging lens system 100 according to the first embodiment of the disclosure can 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.

[0089] In addition, the optical imaging lens system 100 can include a filter F disposed on an image side of the seventh lens 170, an imaging plane IP on which an image is formed as a part of an image sensor, and a stop ST disposed between the second lens 120 and the third lens 130 to control an amount of light.

[0090] where f of the optical imaging lens system 100 according to the first embodiment of the disclosure is 2.214 mm, IMH is 7.150 mm, EPD is 1.119 mm, and FOV is 120.100°. IMG HT in the drawing indicates an image height.

[0091] The characteristics of each lens of the optical imaging lens system 100 according to the first embodiment of the disclosure are as shown in Table 1 below.

[0092] Table 1

[0093]

[0094]

[0095] According to the first embodiment of the present disclosure, the first lens 110 can have a negative refractive power. Further, the first lens 110 can have a concave object side surface S2 and a convex image side surface S3 in the paraxial region.

[0096] The second lens 120 can have a positive refractive power. Further, the second lens 120 can have a convex object side surface S4 and a concave image side surface S5 in the paraxial region.

[0097] The third lens 130 can have a positive refractive power. Further, both the object side surface S7 and the image side surface S8 of the third lens 130 can have a convex shape in the paraxial region.

[0098] The fourth lens 140 can have a positive refractive power. Further, both the object side surface S9 and the image side surface S10 of the fourth lens 140 can have a convex shape in the paraxial region.

[0099] The fifth lens 150 can have a negative refractive power. Further, both the object side surface S11 and the image side surface S12 of the fifth lens 150 can have a concave shape in the paraxial region.

[0100] The sixth lens 160 can have a positive refractive power. Further, the sixth lens 160 can have a concave object side surface S13 and a convex image side surface S14 in the paraxial region.

[0101] The seventh lens 170 can have a negative refractive power. Further, the seventh lens 170 can have a convex object side surface S15 and a concave image side surface S16 in the paraxial region.

[0102] According to the first embodiment of the present disclosure, both the object side surface and the image side surface of the first lens 110 to the seventh lens 170 can be aspherical.

[0103] The aspherical coefficients of each lens of the optical imaging lens system 100 according to the first embodiment of the present disclosure are shown in Table 2 below.

[0104] Table 2

[0105]

[0106]

[0107] Second embodiment

[0108] Figure 2A is a configuration diagram of an optical imaging lens system according to a second embodiment of the present disclosure, andFigure 2B is a graph showing Figure 2A aberration characteristics of the optical imaging lens system shown in

[0109] An optical imaging lens system 200 according to a second embodiment of the present disclosure can 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.

[0110] In addition, the optical imaging lens system 200 can include a filter F disposed on an image side of the seventh lens 270, an imaging plane IP on which an image is formed as a part of an image sensor, and a stop ST disposed between the second lens 220 and the third lens 230 to control an amount of light.

[0111] where f of the optical imaging lens system 200 according to the second embodiment of the present disclosure is 2.220 mm, IMH is 7.150 mm, EPD is 1.122 mm, and FOV is 120.010°.

[0112] The characteristics of each lens of the optical imaging lens system 200 according to the second embodiment of the present disclosure are shown in Table 3 below.

[0113] Table 3

[0114]

[0115]

[0116] According to the second embodiment of the present disclosure, the first lens 210 can have a negative refractive power. In addition, the first lens 210 can have a concave object side surface S2 and a convex image side surface S3 in a paraxial region.

[0117] The second lens 220 can have a positive refractive power. In addition, the second lens 220 can have a convex object side surface S4 and a concave image side surface S5 in a paraxial region.

[0118] The third lens 230 can have a positive refractive power. In addition, both the object side surface S7 and the image side surface S8 of the third lens 230 can have a convex shape in a paraxial region.

[0119] The fourth lens 240 can have a positive refractive power. In addition, both the object side surface S9 and the image side surface S10 of the fourth lens 240 can have a convex shape in a paraxial region.

[0120] The fifth lens 250 can have a negative refractive power. In addition, both the object side surface S11 and the image side surface S12 of the fifth lens 250 can have a concave shape in a paraxial region.

[0121] The sixth lens 260 can have a positive refractive power. Also, the sixth lens 260 can have a concave object side surface S13 and a convex image side surface S14 in the paraxial region.

[0122] The seventh lens 270 can have a negative refractive power. Also, the seventh lens 270 can have a convex object side surface S15 and a concave image side surface S16 in the paraxial region.

[0123] According to the second embodiment of the disclosure, the object side surface and the image side surface of the first lens 210 to the seventh lens 270 can all be aspherical.

[0124] The aspherical coefficients of each lens of the optical imaging lens system 200 according to the second embodiment of the disclosure are shown in Table 4 below.

[0125] Table 4

[0126]

[0127]

[0128]

[0129] Third embodiment

[0130] Figure 3A is a configuration diagram of an optical imaging lens system according to a third embodiment of the disclosure, and Figure 3B is a graph showing Figure 3A aberration characteristics of the optical imaging lens system shown in

[0131] The optical imaging lens system 300 according to the third embodiment of the disclosure can 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.

[0132] Also, the optical imaging lens system 300 can include a filter F disposed on the image side of the seventh lens 370, an imaging plane IP on which an image is formed as part of an image sensor, and a stop ST disposed between the second lens 320 and the third lens 330 to control the amount of light.

[0133] where f of the optical imaging lens system 300 according to the third embodiment of the disclosure is 2.184 mm, IMH is 7.150 mm, EPD is 1.103 mm, and FOV is 120.090°.

[0134] The characteristics of each lens of the optical imaging lens system 300 according to the third embodiment of the disclosure are shown in Table 5 below.

[0135] Table 5

[0136]

[0137]

[0138] According to the third embodiment of the disclosure, the first lens 310 can have a negative refractive power. In addition, the first lens 310 can have a concave object side surface S2 and a convex image side surface S3 in the paraxial region.

[0139] The second lens 320 can have a positive refractive power. In addition, the second lens 320 can have a convex object side surface S4 and a concave image side surface S5 in the paraxial region.

[0140] The third lens 330 can have a positive refractive power. In addition, both the object side surface S7 and the image side surface S8 of the third lens 330 can have a convex shape in the paraxial region.

[0141] The fourth lens 340 can have a positive refractive power. In addition, both the object side surface S9 and the image side surface S10 of the fourth lens 340 can have a convex shape in the paraxial region.

[0142] The fifth lens 350 can have a negative refractive power. In addition, both the object side surface S11 and the image side surface S12 of the fifth lens 350 can have a concave shape in the paraxial region.

[0143] The sixth lens 360 can have a positive refractive power. In addition, the sixth lens 360 can have a concave object side surface S13 and a convex image side surface S14 in the paraxial region.

[0144] The seventh lens 370 can have a negative refractive power. In addition, the seventh lens 370 can have a convex object side surface S15 and a concave image side surface S16 in the paraxial region.

[0145] According to the third embodiment of the disclosure, both the object side surface and the image side surface of the first lens 310 to the seventh lens 370 can be aspherical.

[0146] The aspherical coefficients of each lens of the optical imaging lens system 300 according to the third embodiment of the disclosure are shown in Table 6 below.

[0147] Table 6

[0148]

[0149]

[0150] Fourth embodiment

[0151] Figure 4Ais a configuration diagram of an optical imaging lens system according to a fourth embodiment of the disclosure, and Figure 4B is a graph showing Figure 4A aberration characteristics of the optical imaging lens system shown in

[0152] The optical imaging lens system 400 according to the fourth embodiment of the disclosure can 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.

[0153] In addition, the optical imaging lens system 400 can include a filter F disposed on an image side of the seventh lens 470, an imaging plane IP on which an image is formed as a part of an image sensor, and a stop ST disposed between the second lens 420 and the third lens 430 to control an amount of light.

[0154] where f of the optical imaging lens system 400 according to the fourth embodiment of the disclosure is 2.206 mm, IMH is 7.150 mm, EPD is 1.103 mm, and FOV is 120.070°.

[0155] The characteristics of each lens of the optical imaging lens system 400 according to the fourth embodiment of the disclosure are shown in Table 7 below.

[0156] Table 7

[0157]

[0158]

[0159] According to the fourth embodiment of the disclosure, the first lens 410 can have a negative refractive power. In addition, the first lens 410 can have a concave object side surface S2 and a convex image side surface S3 in a paraxial region.

[0160] The second lens 420 can have a positive refractive power. In addition, the second lens 420 can have a convex object side surface S4 and a concave image side surface S5 in a paraxial region.

[0161] The third lens 430 can have a positive refractive power. In addition, both the object side surface S7 and the image side surface S8 of the third lens 430 can have a convex shape in a paraxial region.

[0162] The fourth lens 440 can have a positive refractive power. In addition, both the object side surface S9 and the image side surface S10 of the fourth lens 440 can have a convex shape in a paraxial region.

[0163] The fifth lens 450 can have a negative refractive power. Also, both the object side S11 and the image side S12 of the fifth lens 450 can have a concave shape in the paraxial region.

[0164] The sixth lens 460 can have a positive refractive power. Also, the sixth lens 460 can have a concave object side S13 and a convex image side S14 in the paraxial region.

[0165] The seventh lens 470 can have a negative refractive power. Also, the seventh lens 470 can have a convex object side S15 and a concave image side S16 in the paraxial region.

[0166] According to the fourth embodiment of the disclosure, the object side and the image side of the first lens 410 to the seventh lens 470 can all be aspherical.

[0167] The aspherical coefficients of each lens of the optical imaging lens system 400 according to the fourth embodiment of the disclosure are shown in Table 8 below.

[0168] Table 8

[0169]

[0170]

[0171] Fifth embodiment

[0172] Figure 5A is a configuration diagram of an optical imaging lens system according to a fifth embodiment of the disclosure, and Figure 5B is a graph showing Figure 5A aberration characteristics of the optical imaging lens system shown in

[0173] The optical imaging lens system 500 according to the fifth embodiment of the disclosure can 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.

[0174] Also, the optical imaging lens system 500 can include a filter F disposed on the image side of the seventh lens 570, an imaging plane IP on which an image is formed as part of an image sensor, and a stop ST disposed between the second lens 520 and the third lens 530 to control the amount of light.

[0175] where f of the optical imaging lens system 500 according to the fifth embodiment of the disclosure is 2.170 mm, IMH is 7.150 mm, EPD is 1.097 mm, and FOV is 120.080°.

[0176] The characteristics of each lens of the optical imaging lens system 500 according to the fifth embodiment of the present disclosure are shown in Table 9 below.

[0177] Table 9

[0178]

[0179] According to the fifth embodiment of the present disclosure, the first lens 510 can have a negative refractive power. In addition, the first lens 510 can have a concave object side surface S2 and a convex image side surface S3 in the paraxial region.

[0180] The second lens 520 can have a positive refractive power. In addition, the second lens 520 can have a convex object side surface S4 and a concave image side surface S5 in the paraxial region.

[0181] The third lens 530 can have a positive refractive power. In addition, both the object side surface S7 and the image side surface S8 of the third lens 530 can have a convex shape in the paraxial region.

[0182] The fourth lens 540 can have a positive refractive power. In addition, both the object side surface S9 and the image side surface S10 of the fourth lens 540 can have a convex shape in the paraxial region.

[0183] The fifth lens 550 can have a negative refractive power. In addition, both the object side surface S11 and the image side surface S12 of the fifth lens 550 can have a concave shape in the paraxial region.

[0184] The sixth lens 560 can have a positive refractive power. In addition, the sixth lens 560 can have a concave object side surface S13 and a convex image side surface S14 in the paraxial region.

[0185] The seventh lens 570 can have a negative refractive power. In addition, the seventh lens 570 can have a convex object side surface S15 and a concave image side surface S16 in the paraxial region.

[0186] According to the fifth embodiment of the present disclosure, both the object side surfaces and the image side surfaces of the first lens 510 to the seventh lens 570 can be aspherical.

[0187] The aspherical coefficients of each lens of the optical imaging lens system 500 according to the fifth embodiment of the present disclosure are shown in Table 10 below.

[0188] Table 10

[0189]

[0190]

[0191] Sixth embodiment

[0192] Figure 6A is a configuration diagram of an optical imaging lens system according to a sixth embodiment of the present disclosure, and Figure 6B is a graph showing Figure 6A aberration characteristics of the optical imaging lens system shown in

[0193] The optical imaging lens system 600 according to the sixth embodiment of the present disclosure can 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.

[0194] In addition, the optical imaging lens system 600 can include a filter F disposed on an image side of the seventh lens 670, an imaging plane IP on which an image is formed as a part of an image sensor, and a stop ST disposed between the second lens 620 and the third lens 630 to control an amount of light.

[0195] where f of the optical imaging lens system 600 according to the sixth embodiment of the present disclosure is 2.200 mm, IMH is 7.150 mm, EPD is 1.113 mm, and FOV is 120.000°.

[0196] The characteristics of each lens of the optical imaging lens system 600 according to the sixth embodiment of the present disclosure are shown in Table 11 below.

[0197] Table 11

[0198]

[0199]

[0200] According to the sixth embodiment of the present disclosure, the first lens 610 can have a negative refractive power. In addition, the first lens 610 can have a concave object side surface S2 and a convex image side surface S3 in a paraxial region.

[0201] The second lens 620 can have a positive refractive power. In addition, the second lens 620 can have a convex object side surface S4 and a concave image side surface S5 in a paraxial region.

[0202] The third lens 630 can have a positive refractive power. In addition, both the object side surface S7 and the image side surface S8 of the third lens 630 can have a convex shape in a paraxial region.

[0203] The fourth lens 640 can have a positive refractive power. In addition, both the object side surface S9 and the image side surface S10 of the fourth lens 640 can have a convex shape in a paraxial region.

[0204] The fifth lens 650 can have a negative refractive power. Also, both the object side S11 and the image side S12 of the fifth lens 650 can have a concave shape in the paraxial region.

[0205] The sixth lens 660 can have a positive refractive power. Also, the sixth lens 660 can have a concave object side S13 and a convex image side S14 in the paraxial region.

[0206] The seventh lens 670 can have a negative refractive power. Also, the seventh lens 670 can have a convex object side S15 and a concave image side S16 in the paraxial region.

[0207] According to the sixth embodiment of the disclosure, the object side and the image side of the first lens 610 to the seventh lens 670 can all be aspherical.

[0208] The aspherical coefficients of each lens of the optical imaging lens system 600 according to the sixth embodiment of the disclosure are shown in Table 12 below.

[0209] Table 12

[0210]

[0211]

[0212]

[0213] Seventh embodiment

[0214] Figure 7A is a configuration diagram of an optical imaging lens system according to a seventh embodiment of the disclosure, and Figure 7B is a graph showing Figure 7A aberration characteristics of the optical imaging lens system shown in

[0215] The optical imaging lens system 700 according to the seventh embodiment of the disclosure can 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.

[0216] Also, the optical imaging lens system 700 can include a filter F disposed on the image side of the seventh lens 770, an imaging plane IP on which an image is formed as part of an image sensor, and a stop ST disposed between the second lens 720 and the third lens 730 to control the amount of light.

[0217] where f of the optical imaging lens system 700 according to the seventh embodiment of the disclosure is 2.182 mm, IMH is 7.150 mm, EPD is 1.103 mm, and FOV is 120.080°.

[0218] The characteristics of each lens of the optical imaging lens system 700 according to the seventh embodiment of the present disclosure are shown in Table 13 below.

[0219] Table 13

[0220]

[0221]

[0222] According to the seventh embodiment of the present disclosure, the first lens 710 can have a negative refractive power. In addition, the first lens 710 can have a concave object side surface S2 and a convex image side surface S3 in the paraxial region.

[0223] The second lens 720 can have a positive refractive power. In addition, the second lens 720 can have a convex object side surface S4 and a concave image side surface S5 in the paraxial region.

[0224] The third lens 730 can have a positive refractive power. In addition, both the object side surface S7 and the image side surface S8 of the third lens 730 can have a convex shape in the paraxial region.

[0225] The fourth lens 740 can have a positive refractive power. In addition, both the object side surface S9 and the image side surface S10 of the fourth lens 740 can have a convex shape in the paraxial region.

[0226] The fifth lens 750 can have a negative refractive power. In addition, both the object side surface S11 and the image side surface S12 of the fifth lens 750 can have a concave shape in the paraxial region.

[0227] The sixth lens 760 can have a positive refractive power. In addition, the sixth lens 760 can have a concave object side surface S13 and a convex image side surface S14 in the paraxial region.

[0228] The seventh lens 770 can have a negative refractive power. In addition, the seventh lens 770 can have a convex object side surface S15 and a concave image side surface S16 in the paraxial region.

[0229] According to the seventh embodiment of the present disclosure, both the object side surfaces and the image side surfaces of the first lens 710 to the seventh lens 770 can be aspherical.

[0230] The aspherical coefficients of each lens of the optical imaging lens system 700 according to the seventh embodiment of the present disclosure are shown in Table 14 below.

[0231] Table 14

[0232]

[0233]

[0234]

[0235] Eighth embodiment

[0236] Figure 8A is a configuration diagram of an optical imaging lens system according to an eighth embodiment of the disclosure, and Figure 8B is a graph showing Figure 8A aberration characteristics of the optical imaging lens system shown in

[0237] The optical imaging lens system 800 according to the eighth embodiment of the disclosure can include a first lens 810, a second lens 820, a third lens 830, a fourth lens 840, a fifth lens 850, a sixth lens 860, and a seventh lens 870.

[0238] Further, the optical imaging lens system 800 can include a filter F disposed on an image side of the seventh lens 870, an imaging plane IP on which an image is formed as a part of an image sensor, and a stop ST disposed between the second lens 820 and the third lens 830 to control an amount of light.

[0239] where f of the optical imaging lens system 800 according to the eighth embodiment of the disclosure is 2.201 mm, IMH is 7.150 mm, EPD is 1.113 mm, and FOV is 117.650°.

[0240] The characteristics of each lens of the optical imaging lens system 800 according to the eighth embodiment of the disclosure are shown in Table 15 below.

[0241] Table 15

[0242]

[0243]

[0244] According to the eighth embodiment of the disclosure, the first lens 810 can have a negative refractive power. Further, the first lens 810 can have a concave object side surface S2 and a convex image side surface S3 in a paraxial region.

[0245] The second lens 820 can have a positive refractive power. Further, the second lens 820 can have a convex object side surface S4 and a concave image side surface S5 in a paraxial region.

[0246] The third lens 830 can have a positive refractive power. Further, both the object side surface S7 and the image side surface S8 of the third lens 830 can have a convex shape in a paraxial region.

[0247] The fourth lens 840 can have a positive refractive power. Also, both the object side S9 and the image side S10 of the fourth lens 840 can have convex shapes in the paraxial region.

[0248] The fifth lens 850 can have a negative refractive power. Also, both the object side S11 and the image side S12 of the fifth lens 850 can have concave shapes in the paraxial region.

[0249] The sixth lens 860 can have a positive refractive power. Also, the sixth lens 860 can have a concave object side S13 and a convex image side S14 in the paraxial region.

[0250] The seventh lens 870 can have a negative refractive power. Also, the seventh lens 870 can have a convex object side S15 and a concave image side S16 in the paraxial region.

[0251] According to an eighth embodiment of the disclosure, the object side and the image side of the first lens 810 through the seventh lens 870 can all be aspherical.

[0252] The aspherical coefficients of each lens of the optical imaging lens system 800 according to the eighth embodiment of the disclosure are shown in Table 16 below.

[0253] Table 16

[0254]

[0255]

[0256] The conditional expression data according to the embodiments of the disclosure are shown in Table 17 below.

[0257] Table 17

[0258]

[0259]

[0260] The ultra-wide-angle optical imaging lens system according to the embodiments of the disclosure can capture a high-resolution and bright image while achieving miniaturization.

[0261] While specific examples have been shown and described, it will be apparent to those skilled in the art, upon understanding the disclosure, that various changes in form and details can be made without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be understood as being descriptive in nature and not as being limiting in purpose. Descriptions of features or aspects within each example are to be considered as applicable to similar features or aspects within other examples. Proper results can be achieved if the described techniques are performed in a different order, and / or if components in the described systems, architectures, devices, or circuits are combined or substituted for one another or are supplemented, regardless of whether any such design choices are expressly described. Accordingly, the scope of the disclosure is not limited by the specific implementations described above, but only by the claims and their equivalents, and any variations that would be apparent to one of skill in the art upon reading the disclosure will be considered to fall within the scope of the disclosure as defined by the claims and their equivalents.

Claims

1. An optical imaging lens system, characterized in that, The optical imaging lens system includes: 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, wherein, the first lens has a convex image side, and the sixth lens has a concave object side, and wherein, the following conditional expressions are satisfied: (TTL / IMH)×Fno<1.71, wherein, TTL is the distance on the optical axis from the object side of the first lens to the imaging surface, IMH is the diagonal length of the imaging surface, and Fno is the ratio of the total focal length of the optical imaging lens system to the diameter of the entrance pupil.

2. The optical imaging lens system according to claim 1, characterized in that, The sixth lens has a convex image side.

3. The optical imaging lens system according to claim 1, characterized in that, The following conditional expression is satisfied: L6R1 / CT6<-6, wherein, L6R1 is the radius of curvature of the object side of the sixth lens, and CT6 is the thickness of the sixth lens on the optical axis.

4. The optical imaging lens system according to claim 1, characterized in that, The following conditional expression is satisfied: 2<L6R1 / L6R2, wherein, L6R1 is the radius of curvature of the object side of the sixth lens, and L6R2 is the radius of curvature of the image side of the sixth lens.

5. The optical imaging lens system according to claim 1, characterized in that, The fourth lens has a convex object side.

6. The optical imaging lens system according to claim 1, characterized in that, The following conditional expression is satisfied: 15<v1-v2<40, wherein, v1 is the Abbe number of the first lens, and v2 is the Abbe number of the second lens.

7. The optical imaging lens system according to claim 1, characterized in that, The following conditional expression is satisfied: 0<v1-v7<40, wherein, v1 is the Abbe number of the first lens, and v7 is the Abbe number of the seventh lens.

8. The optical imaging lens system according to claim 1, characterized in that, The fifth lens has a negative refractive power and a concave image side.

9. The optical imaging lens system according to claim 1, characterized in that, The sixth lens has a positive refractive power, and the seventh lens has a negative refractive power.

10. An optical imaging lens system, characterized in that, The optical imaging lens system includes: A first lens, having a negative refractive power and a convex image side; A second lens, having a positive refractive power; A third lens, having a positive refractive power; A fourth lens, having a positive refractive power; A fifth lens, having a refractive power; A sixth lens, having a positive refractive power; and A seventh lens, having a refractive power, wherein, the first lens to the seventh lens are arranged in sequence from the object side, and wherein, the following conditional expressions are satisfied: L6R1 / CT6<-6, wherein, L6R1 is the radius of curvature of the object side of the sixth lens, and CT6 is the thickness of the sixth lens on the optical axis.

11. The optical imaging lens system according to claim 10, characterized in that, The following conditional expression is satisfied: 2<L6R1 / L6R2, wherein, L6R2 is the radius of curvature of the image side of the sixth lens.

12. The optical imaging lens system according to claim 10, characterized in that, The fifth lens and the seventh lens each have a negative refractive power.

13. The optical imaging lens system according to claim 10, characterized in that, The following conditional expression is satisfied: TTL / IMH<0.86, wherein, TTL is the distance on the optical axis from the object side of the first lens to the imaging surface, and IMH is the diagonal length of the imaging surface.

14. The optical imaging lens system according to claim 10, characterized in that, The following conditional expression is satisfied: 50<FOV / f (unit: ° / mm), wherein, FOV is the field of view of the optical imaging lens system, and f is the total focal length of the optical imaging lens system.

15. The optical imaging lens system according to claim 10, characterized in that, The following conditional expression is satisfied: 25<v1-v5<45, wherein, v1 is the Abbe number of the first lens, and v5 is the Abbe number of the fifth lens.

16. The optical imaging lens system according to claim 10, characterized in that, The fifth lens has a concave image-side surface.

Images